forked from mirrors/gecko-dev
9c2e7458ba
Most usage is a straight replacement but gtk needs extra changes as it transfers plain text in UTF8 natively and needs to be converted into UTF16, and Windows uses single-byte characters for RTF and CF_HTML formats so we preserve this. Differential Revision: https://phabricator.services.mozilla.com/D158587
2658 lines
95 KiB
C++
2658 lines
95 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=4 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsDragService.h"
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#include "nsArrayUtils.h"
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#include "nsIObserverService.h"
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#include "nsWidgetsCID.h"
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#include "nsWindow.h"
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#include "nsSystemInfo.h"
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#include "nsXPCOM.h"
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#include "nsICookieJarSettings.h"
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#include "nsISupportsPrimitives.h"
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#include "nsIIOService.h"
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#include "nsIFileURL.h"
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#include "nsNetUtil.h"
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#include "mozilla/Logging.h"
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#include "nsTArray.h"
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#include "nsPrimitiveHelpers.h"
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#include "prtime.h"
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#include "prthread.h"
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#include <dlfcn.h>
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#include <gtk/gtk.h>
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#include "nsCRT.h"
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#include "mozilla/BasicEvents.h"
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#include "mozilla/Services.h"
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#include "mozilla/ClearOnShutdown.h"
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#include "mozilla/PresShell.h"
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#include "mozilla/ScopeExit.h"
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#include "mozilla/AutoRestore.h"
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#include "mozilla/WidgetUtilsGtk.h"
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#include "GRefPtr.h"
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#include "nsAppShell.h"
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#ifdef MOZ_X11
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# include "gfxXlibSurface.h"
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#endif
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#include "gfxContext.h"
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#include "nsImageToPixbuf.h"
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#include "nsPresContext.h"
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#include "nsIContent.h"
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#include "mozilla/dom/Document.h"
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#include "nsViewManager.h"
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#include "nsIFrame.h"
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#include "nsGtkUtils.h"
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#include "nsGtkKeyUtils.h"
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#include "mozilla/gfx/2D.h"
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#include "gfxPlatform.h"
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#include "ScreenHelperGTK.h"
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#include "nsArrayUtils.h"
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#include "nsStringStream.h"
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#include "nsDirectoryService.h"
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#include "nsDirectoryServiceDefs.h"
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#include "nsEscape.h"
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#include "nsString.h"
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using namespace mozilla;
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using namespace mozilla::gfx;
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// The maximum time to wait for a "drag_received" arrived in microseconds.
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#define NS_DND_TIMEOUT 1000000
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// The maximum time to wait before temporary files resulting
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// from drag'n'drop events will be removed in miliseconds.
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// It's set to 5 min as the file has to be present some time after drop
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// event to give target application time to get the data.
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// (A target application can throw a dialog to ask user what to do with
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// the data and will access the tmp file after user action.)
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#define NS_DND_TMP_CLEANUP_TIMEOUT (1000 * 60 * 5)
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#define NS_SYSTEMINFO_CONTRACTID "@mozilla.org/system-info;1"
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// This sets how opaque the drag image is
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#define DRAG_IMAGE_ALPHA_LEVEL 0.5
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#ifdef MOZ_LOGGING
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extern mozilla::LazyLogModule gWidgetDragLog;
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# define LOGDRAGSERVICE(str, ...) \
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MOZ_LOG(gWidgetDragLog, mozilla::LogLevel::Debug, \
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("[Depth %d]: " str, GetLoopDepth(), ##__VA_ARGS__))
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# define LOGDRAGSERVICESTATIC(str, ...) \
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MOZ_LOG(gWidgetDragLog, mozilla::LogLevel::Debug, (str, ##__VA_ARGS__))
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#else
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# define LOGDRAGSERVICE(...)
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#endif
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// Helper class to block native events processing.
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class MOZ_STACK_CLASS AutoSuspendNativeEvents {
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public:
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AutoSuspendNativeEvents() {
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mAppShell = do_GetService(NS_APPSHELL_CID);
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mAppShell->SuspendNative();
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}
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~AutoSuspendNativeEvents() { mAppShell->ResumeNative(); }
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private:
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nsCOMPtr<nsIAppShell> mAppShell;
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};
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// data used for synthetic periodic motion events sent to the source widget
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// grabbing real events for the drag.
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static guint sMotionEventTimerID;
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static GdkEvent* sMotionEvent;
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static GUniquePtr<GdkEvent> TakeMotionEvent() {
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GUniquePtr<GdkEvent> event(sMotionEvent);
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sMotionEvent = nullptr;
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return event;
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}
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static void SetMotionEvent(GUniquePtr<GdkEvent> aEvent) {
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TakeMotionEvent();
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sMotionEvent = aEvent.release();
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}
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static GtkWidget* sGrabWidget;
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static constexpr nsLiteralString kDisallowedExportedSchemes[] = {
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u"about"_ns, u"blob"_ns, u"chrome"_ns, u"imap"_ns,
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u"javascript"_ns, u"mailbox"_ns, u"moz-anno"_ns, u"news"_ns,
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u"page-icon"_ns, u"resource"_ns, u"view-source"_ns, u"moz-extension"_ns,
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};
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// _NETSCAPE_URL is similar to text/uri-list type.
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// Format is UTF8: URL + "\n" + title.
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// While text/uri-list tells target application to fetch, copy and store data
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// from URL, _NETSCAPE_URL suggest to create a link to the target.
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// Also _NETSCAPE_URL points to only one item while text/uri-list can point to
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// multiple ones.
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static const char gMozUrlType[] = "_NETSCAPE_URL";
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static const char gMimeListType[] = "application/x-moz-internal-item-list";
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static const char gTextUriListType[] = "text/uri-list";
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static const char gTextPlainUTF8Type[] = "text/plain;charset=utf-8";
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static const char gXdndDirectSaveType[] = "XdndDirectSave0";
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static const char gTabDropType[] = "application/x-moz-tabbrowser-tab";
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// See https://docs.gtk.org/gtk3/enum.DragResult.html
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static const char kGtkDragResults[][100]{
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"GTK_DRAG_RESULT_SUCCESS", "GTK_DRAG_RESULT_NO_TARGET",
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"GTK_DRAG_RESULT_USER_CANCELLED", "GTK_DRAG_RESULT_TIMEOUT_EXPIRED",
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"GTK_DRAG_RESULT_GRAB_BROKEN", "GTK_DRAG_RESULT_ERROR"};
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static void invisibleSourceDragBegin(GtkWidget* aWidget,
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GdkDragContext* aContext, gpointer aData);
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static void invisibleSourceDragEnd(GtkWidget* aWidget, GdkDragContext* aContext,
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gpointer aData);
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static gboolean invisibleSourceDragFailed(GtkWidget* aWidget,
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GdkDragContext* aContext,
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gint aResult, gpointer aData);
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static void invisibleSourceDragDataGet(GtkWidget* aWidget,
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GdkDragContext* aContext,
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GtkSelectionData* aSelectionData,
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guint aInfo, guint32 aTime,
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gpointer aData);
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nsDragService::nsDragService()
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: mScheduledTask(eDragTaskNone),
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mTaskSource(0),
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mScheduledTaskIsRunning(false),
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mCachedDragContext() {
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// We have to destroy the hidden widget before the event loop stops
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// running.
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nsCOMPtr<nsIObserverService> obsServ =
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mozilla::services::GetObserverService();
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obsServ->AddObserver(this, "quit-application", false);
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// our hidden source widget
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// Using an offscreen window works around bug 983843.
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mHiddenWidget = gtk_offscreen_window_new();
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// make sure that the widget is realized so that
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// we can use it as a drag source.
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gtk_widget_realize(mHiddenWidget);
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// hook up our internal signals so that we can get some feedback
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// from our drag source
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g_signal_connect(mHiddenWidget, "drag_begin",
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G_CALLBACK(invisibleSourceDragBegin), this);
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g_signal_connect(mHiddenWidget, "drag_data_get",
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G_CALLBACK(invisibleSourceDragDataGet), this);
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g_signal_connect(mHiddenWidget, "drag_end",
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G_CALLBACK(invisibleSourceDragEnd), this);
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// drag-failed is available from GTK+ version 2.12
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guint dragFailedID =
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g_signal_lookup("drag-failed", G_TYPE_FROM_INSTANCE(mHiddenWidget));
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if (dragFailedID) {
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g_signal_connect_closure_by_id(
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mHiddenWidget, dragFailedID, 0,
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g_cclosure_new(G_CALLBACK(invisibleSourceDragFailed), this, nullptr),
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FALSE);
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}
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// set up our logging module
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mCanDrop = false;
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mTargetDragDataReceived = false;
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mTargetDragData = 0;
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mTargetDragDataLen = 0;
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mTempFileTimerID = 0;
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mEventLoopDepth = 0;
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LOGDRAGSERVICE("nsDragService::nsDragService");
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}
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nsDragService::~nsDragService() {
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LOGDRAGSERVICE("nsDragService::~nsDragService");
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if (mTaskSource) g_source_remove(mTaskSource);
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if (mTempFileTimerID) {
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g_source_remove(mTempFileTimerID);
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RemoveTempFiles();
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}
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}
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NS_IMPL_ISUPPORTS_INHERITED(nsDragService, nsBaseDragService, nsIObserver)
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mozilla::StaticRefPtr<nsDragService> sDragServiceInstance;
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/* static */
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already_AddRefed<nsDragService> nsDragService::GetInstance() {
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if (gfxPlatform::IsHeadless()) {
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return nullptr;
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}
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if (!sDragServiceInstance) {
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sDragServiceInstance = new nsDragService();
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ClearOnShutdown(&sDragServiceInstance);
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}
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RefPtr<nsDragService> service = sDragServiceInstance.get();
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return service.forget();
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}
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// nsIObserver
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NS_IMETHODIMP
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nsDragService::Observe(nsISupports* aSubject, const char* aTopic,
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const char16_t* aData) {
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if (!nsCRT::strcmp(aTopic, "quit-application")) {
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LOGDRAGSERVICE("nsDragService::Observe(\"quit-application\")");
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if (mHiddenWidget) {
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gtk_widget_destroy(mHiddenWidget);
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mHiddenWidget = 0;
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}
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TargetResetData();
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} else {
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MOZ_ASSERT_UNREACHABLE("unexpected topic");
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return NS_ERROR_UNEXPECTED;
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}
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return NS_OK;
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}
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// Support for periodic drag events
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// http://www.whatwg.org/specs/web-apps/current-work/multipage/dnd.html#drag-and-drop-processing-model
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// and the Xdnd protocol both recommend that drag events are sent periodically,
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// but GTK does not normally provide this.
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//
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// Here GTK is periodically stimulated by copies of the most recent mouse
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// motion events so as to send drag position messages to the destination when
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// appropriate (after it has received a status event from the previous
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// message).
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//
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// (If events were sent only on the destination side then the destination
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// would have no message to which it could reply with a drag status. Without
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// sending a drag status to the source, the destination would not be able to
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// change its feedback re whether it could accept the drop, and so the
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// source's behavior on drop will not be consistent.)
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static gboolean DispatchMotionEventCopy(gpointer aData) {
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// Clear the timer id before OnSourceGrabEventAfter is called during event
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// dispatch.
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sMotionEventTimerID = 0;
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GUniquePtr<GdkEvent> event = TakeMotionEvent();
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// If there is no longer a grab on the widget, then the drag is over and
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// there is no need to continue drag motion.
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if (gtk_widget_has_grab(sGrabWidget)) {
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gtk_propagate_event(sGrabWidget, event.get());
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}
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// Cancel this timer;
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// We've already started another if the motion event was dispatched.
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return FALSE;
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}
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static void OnSourceGrabEventAfter(GtkWidget* widget, GdkEvent* event,
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gpointer user_data) {
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// If there is no longer a grab on the widget, then the drag motion is
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// over (though the data may not be fetched yet).
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if (!gtk_widget_has_grab(sGrabWidget)) return;
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if (event->type == GDK_MOTION_NOTIFY) {
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SetMotionEvent(GUniquePtr<GdkEvent>(gdk_event_copy(event)));
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// Update the cursor position. The last of these recorded gets used for
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// the eDragEnd event.
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nsDragService* dragService = static_cast<nsDragService*>(user_data);
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gint scale = mozilla::widget::ScreenHelperGTK::GetGTKMonitorScaleFactor();
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auto p = LayoutDeviceIntPoint::Round(event->motion.x_root * scale,
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event->motion.y_root * scale);
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dragService->SetDragEndPoint(p);
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} else if (sMotionEvent &&
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(event->type == GDK_KEY_PRESS || event->type == GDK_KEY_RELEASE)) {
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// Update modifier state from key events.
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sMotionEvent->motion.state = event->key.state;
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} else {
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return;
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}
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if (sMotionEventTimerID) {
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g_source_remove(sMotionEventTimerID);
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}
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// G_PRIORITY_DEFAULT_IDLE is lower priority than GDK's redraw idle source
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// and lower than GTK's idle source that sends drag position messages after
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// motion-notify signals.
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//
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// http://www.whatwg.org/specs/web-apps/current-work/multipage/dnd.html#drag-and-drop-processing-model
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// recommends an interval of 350ms +/- 200ms.
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sMotionEventTimerID = g_timeout_add_full(
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G_PRIORITY_DEFAULT_IDLE, 350, DispatchMotionEventCopy, nullptr, nullptr);
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}
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static GtkWindow* GetGtkWindow(dom::Document* aDocument) {
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if (!aDocument) return nullptr;
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PresShell* presShell = aDocument->GetPresShell();
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if (!presShell) {
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return nullptr;
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}
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RefPtr<nsViewManager> vm = presShell->GetViewManager();
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if (!vm) return nullptr;
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nsCOMPtr<nsIWidget> widget = vm->GetRootWidget();
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if (!widget) return nullptr;
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GtkWidget* gtkWidget = static_cast<nsWindow*>(widget.get())->GetGtkWidget();
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if (!gtkWidget) return nullptr;
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GtkWidget* toplevel = nullptr;
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toplevel = gtk_widget_get_toplevel(gtkWidget);
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if (!GTK_IS_WINDOW(toplevel)) return nullptr;
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return GTK_WINDOW(toplevel);
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}
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// nsIDragService
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NS_IMETHODIMP
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nsDragService::InvokeDragSession(
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nsINode* aDOMNode, nsIPrincipal* aPrincipal, nsIContentSecurityPolicy* aCsp,
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nsICookieJarSettings* aCookieJarSettings, nsIArray* aArrayTransferables,
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uint32_t aActionType,
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nsContentPolicyType aContentPolicyType = nsIContentPolicy::TYPE_OTHER) {
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LOGDRAGSERVICE("nsDragService::InvokeDragSession");
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// If the previous source drag has not yet completed, signal handlers need
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// to be removed from sGrabWidget and dragend needs to be dispatched to
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// the source node, but we can't call EndDragSession yet because we don't
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// know whether or not the drag succeeded.
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if (mSourceNode) return NS_ERROR_NOT_AVAILABLE;
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return nsBaseDragService::InvokeDragSession(
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aDOMNode, aPrincipal, aCsp, aCookieJarSettings, aArrayTransferables,
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aActionType, aContentPolicyType);
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}
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// nsBaseDragService
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nsresult nsDragService::InvokeDragSessionImpl(
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nsIArray* aArrayTransferables, const Maybe<CSSIntRegion>& aRegion,
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uint32_t aActionType) {
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// make sure that we have an array of transferables to use
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if (!aArrayTransferables) return NS_ERROR_INVALID_ARG;
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// set our reference to the transferables. this will also addref
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// the transferables since we're going to hang onto this beyond the
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// length of this call
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mSourceDataItems = aArrayTransferables;
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LOGDRAGSERVICE("nsDragService::InvokeDragSessionImpl");
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// get the list of items we offer for drags
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GtkTargetList* sourceList = GetSourceList();
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if (!sourceList) return NS_OK;
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// save our action type
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GdkDragAction action = GDK_ACTION_DEFAULT;
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if (aActionType & DRAGDROP_ACTION_COPY)
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action = (GdkDragAction)(action | GDK_ACTION_COPY);
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if (aActionType & DRAGDROP_ACTION_MOVE)
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action = (GdkDragAction)(action | GDK_ACTION_MOVE);
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if (aActionType & DRAGDROP_ACTION_LINK)
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action = (GdkDragAction)(action | GDK_ACTION_LINK);
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GdkEvent* existingEvent = widget::GetLastMousePressEvent();
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GdkEvent fakeEvent;
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if (!existingEvent) {
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// Create a fake event for the drag so we can pass the time (so to speak).
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// If we don't do this, then, when the timestamp for the pending button
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// release event is used for the ungrab, the ungrab can fail due to the
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// timestamp being _earlier_ than CurrentTime.
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memset(&fakeEvent, 0, sizeof(GdkEvent));
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fakeEvent.type = GDK_BUTTON_PRESS;
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fakeEvent.button.window = gtk_widget_get_window(mHiddenWidget);
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fakeEvent.button.time = nsWindow::GetLastUserInputTime();
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fakeEvent.button.device = widget::GdkGetPointer();
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}
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// Put the drag widget in the window group of the source node so that the
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// gtk_grab_add during gtk_drag_begin is effective.
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// gtk_window_get_group(nullptr) returns the default window group.
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GtkWindowGroup* window_group =
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gtk_window_get_group(GetGtkWindow(mSourceDocument));
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gtk_window_group_add_window(window_group, GTK_WINDOW(mHiddenWidget));
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// start our drag.
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GdkDragContext* context = gtk_drag_begin_with_coordinates(
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mHiddenWidget, sourceList, action, 1,
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existingEvent ? existingEvent : &fakeEvent, -1, -1);
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if (widget::GdkIsWaylandDisplay() || widget::IsXWaylandProtocol()) {
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GdkDevice* device = gdk_drag_context_get_device(context);
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GdkWindow* gdkWindow =
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gdk_device_get_window_at_position(device, nullptr, nullptr);
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mSourceWindow = nsWindow::GetWindow(gdkWindow);
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if (mSourceWindow) {
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mSourceWindow->SetDragSource(context);
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}
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}
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LOGDRAGSERVICE(" GdkDragContext [%p] nsWindow [%p]", context,
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mSourceWindow.get());
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nsresult rv;
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if (context) {
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StartDragSession();
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// GTK uses another hidden window for receiving mouse events.
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sGrabWidget = gtk_window_group_get_current_grab(window_group);
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if (sGrabWidget) {
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g_object_ref(sGrabWidget);
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// Only motion and key events are required but connect to
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// "event-after" as this is never blocked by other handlers.
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g_signal_connect(sGrabWidget, "event-after",
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G_CALLBACK(OnSourceGrabEventAfter), this);
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}
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// We don't have a drag end point yet.
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mEndDragPoint = LayoutDeviceIntPoint(-1, -1);
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rv = NS_OK;
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} else {
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rv = NS_ERROR_FAILURE;
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}
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gtk_target_list_unref(sourceList);
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return rv;
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}
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|
|
bool nsDragService::SetAlphaPixmap(SourceSurface* aSurface,
|
|
GdkDragContext* aContext, int32_t aXOffset,
|
|
int32_t aYOffset,
|
|
const LayoutDeviceIntRect& dragRect) {
|
|
GdkScreen* screen = gtk_widget_get_screen(mHiddenWidget);
|
|
|
|
// Transparent drag icons need, like a lot of transparency-related things,
|
|
// a compositing X window manager
|
|
if (!gdk_screen_is_composited(screen)) {
|
|
return false;
|
|
}
|
|
|
|
#ifdef cairo_image_surface_create
|
|
# error "Looks like we're including Mozilla's cairo instead of system cairo"
|
|
#endif
|
|
|
|
// TODO: grab X11 pixmap or image data instead of expensive readback.
|
|
cairo_surface_t* surf = cairo_image_surface_create(
|
|
CAIRO_FORMAT_ARGB32, dragRect.width, dragRect.height);
|
|
if (!surf) return false;
|
|
|
|
RefPtr<DrawTarget> dt = gfxPlatform::CreateDrawTargetForData(
|
|
cairo_image_surface_get_data(surf),
|
|
nsIntSize(dragRect.width, dragRect.height),
|
|
cairo_image_surface_get_stride(surf), SurfaceFormat::B8G8R8A8);
|
|
if (!dt) return false;
|
|
|
|
dt->ClearRect(Rect(0, 0, dragRect.width, dragRect.height));
|
|
dt->DrawSurface(
|
|
aSurface, Rect(0, 0, dragRect.width, dragRect.height),
|
|
Rect(0, 0, dragRect.width, dragRect.height), DrawSurfaceOptions(),
|
|
DrawOptions(DRAG_IMAGE_ALPHA_LEVEL, CompositionOp::OP_SOURCE));
|
|
|
|
cairo_surface_mark_dirty(surf);
|
|
cairo_surface_set_device_offset(surf, -aXOffset, -aYOffset);
|
|
|
|
// Ensure that the surface is drawn at the correct scale on HiDPI displays.
|
|
static auto sCairoSurfaceSetDeviceScalePtr =
|
|
(void (*)(cairo_surface_t*, double, double))dlsym(
|
|
RTLD_DEFAULT, "cairo_surface_set_device_scale");
|
|
if (sCairoSurfaceSetDeviceScalePtr) {
|
|
gint scale = mozilla::widget::ScreenHelperGTK::GetGTKMonitorScaleFactor();
|
|
sCairoSurfaceSetDeviceScalePtr(surf, scale, scale);
|
|
}
|
|
|
|
gtk_drag_set_icon_surface(aContext, surf);
|
|
cairo_surface_destroy(surf);
|
|
return true;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDragService::StartDragSession() {
|
|
LOGDRAGSERVICE("nsDragService::StartDragSession");
|
|
mTempFileUrls.Clear();
|
|
return nsBaseDragService::StartDragSession();
|
|
}
|
|
|
|
bool nsDragService::RemoveTempFiles() {
|
|
LOGDRAGSERVICE("nsDragService::RemoveTempFiles");
|
|
|
|
// We can not delete the temporary files immediately after the
|
|
// drag has finished, because the target application might have not
|
|
// copied the temporary file yet. The Qt toolkit does not provide a
|
|
// way to mark a drop as finished in an asynchronous way, so most
|
|
// Qt based applications do send the dnd_finished signal before they
|
|
// have actually accessed the data from the temporary file.
|
|
// (https://bugreports.qt.io/browse/QTBUG-5441)
|
|
//
|
|
// To work also with these applications we collect all temporary
|
|
// files in mTemporaryFiles array and remove them here in the timer event.
|
|
auto files = std::move(mTemporaryFiles);
|
|
for (nsIFile* file : files) {
|
|
#ifdef MOZ_LOGGING
|
|
if (MOZ_LOG_TEST(gWidgetDragLog, LogLevel::Debug)) {
|
|
nsAutoCString path;
|
|
if (NS_SUCCEEDED(file->GetNativePath(path))) {
|
|
LOGDRAGSERVICE(" removing %s", path.get());
|
|
}
|
|
}
|
|
#endif
|
|
file->Remove(/* recursive = */ true);
|
|
}
|
|
MOZ_ASSERT(mTemporaryFiles.IsEmpty());
|
|
mTempFileTimerID = 0;
|
|
// Return false to remove the timer added by g_timeout_add_full().
|
|
return false;
|
|
}
|
|
|
|
gboolean nsDragService::TaskRemoveTempFiles(gpointer data) {
|
|
RefPtr<nsDragService> dragService = static_cast<nsDragService*>(data);
|
|
return dragService->RemoveTempFiles();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDragService::EndDragSession(bool aDoneDrag, uint32_t aKeyModifiers) {
|
|
LOGDRAGSERVICE("nsDragService::EndDragSession(%p) %d",
|
|
mTargetDragContext.get(), aDoneDrag);
|
|
|
|
if (sGrabWidget) {
|
|
g_signal_handlers_disconnect_by_func(
|
|
sGrabWidget, FuncToGpointer(OnSourceGrabEventAfter), this);
|
|
g_object_unref(sGrabWidget);
|
|
sGrabWidget = nullptr;
|
|
|
|
if (sMotionEventTimerID) {
|
|
g_source_remove(sMotionEventTimerID);
|
|
sMotionEventTimerID = 0;
|
|
}
|
|
if (sMotionEvent) {
|
|
TakeMotionEvent();
|
|
}
|
|
}
|
|
|
|
// unset our drag action
|
|
SetDragAction(DRAGDROP_ACTION_NONE);
|
|
|
|
// start timer to remove temporary files
|
|
if (mTemporaryFiles.Count() > 0 && !mTempFileTimerID) {
|
|
LOGDRAGSERVICE(" queue removing of temporary files");
|
|
// |this| won't be used after nsDragService delete because the timer is
|
|
// removed in the nsDragService destructor.
|
|
mTempFileTimerID =
|
|
g_timeout_add(NS_DND_TMP_CLEANUP_TIMEOUT, TaskRemoveTempFiles, this);
|
|
mTempFileUrls.Clear();
|
|
}
|
|
|
|
// We're done with the drag context.
|
|
if (mSourceWindow) {
|
|
mSourceWindow->SetDragSource(nullptr);
|
|
mSourceWindow = nullptr;
|
|
}
|
|
mTargetDragContextForRemote = nullptr;
|
|
mTargetWindow = nullptr;
|
|
mPendingWindow = nullptr;
|
|
mCachedDragContext = 0;
|
|
|
|
return nsBaseDragService::EndDragSession(aDoneDrag, aKeyModifiers);
|
|
}
|
|
|
|
// nsIDragSession
|
|
NS_IMETHODIMP
|
|
nsDragService::SetCanDrop(bool aCanDrop) {
|
|
LOGDRAGSERVICE("nsDragService::SetCanDrop %d", aCanDrop);
|
|
mCanDrop = aCanDrop;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDragService::GetCanDrop(bool* aCanDrop) {
|
|
LOGDRAGSERVICE("nsDragService::GetCanDrop");
|
|
*aCanDrop = mCanDrop;
|
|
return NS_OK;
|
|
}
|
|
|
|
static void UTF16ToNewUTF8(const char16_t* aUTF16, uint32_t aUTF16Len,
|
|
char** aUTF8, uint32_t* aUTF8Len) {
|
|
nsDependentSubstring utf16(aUTF16, aUTF16Len);
|
|
*aUTF8 = ToNewUTF8String(utf16, aUTF8Len);
|
|
}
|
|
|
|
static void UTF8ToNewUTF16(const char* aUTF8, uint32_t aUTF8Len,
|
|
char16_t** aUTF16, uint32_t* aUTF16Len) {
|
|
nsDependentCSubstring utf8(aUTF8, aUTF8Len);
|
|
*aUTF16 = UTF8ToNewUnicode(utf8, aUTF16Len);
|
|
}
|
|
|
|
// count the number of URIs in some text/uri-list format data.
|
|
static uint32_t CountTextUriListItems(const char* data, uint32_t datalen) {
|
|
const char* p = data;
|
|
const char* endPtr = p + datalen;
|
|
uint32_t count = 0;
|
|
|
|
while (p < endPtr) {
|
|
// skip whitespace (if any)
|
|
while (p < endPtr && *p != '\0' && isspace(*p)) p++;
|
|
// if we aren't at the end of the line ...
|
|
if (p != endPtr && *p != '\0' && *p != '\n' && *p != '\r') count++;
|
|
// skip to the end of the line
|
|
while (p < endPtr && *p != '\0' && *p != '\n') p++;
|
|
p++; // skip the actual newline as well.
|
|
}
|
|
return count;
|
|
}
|
|
|
|
// extract an item from text/uri-list formatted data and convert it to
|
|
// unicode.
|
|
static void GetTextUriListItem(const char* data, uint32_t datalen,
|
|
uint32_t aItemIndex, char16_t** convertedText,
|
|
uint32_t* convertedTextLen) {
|
|
const char* p = data;
|
|
const char* endPtr = p + datalen;
|
|
unsigned int count = 0;
|
|
|
|
*convertedText = nullptr;
|
|
while (p < endPtr) {
|
|
// skip whitespace (if any)
|
|
while (p < endPtr && *p != '\0' && isspace(*p)) p++;
|
|
// if we aren't at the end of the line, we have a url
|
|
if (p != endPtr && *p != '\0' && *p != '\n' && *p != '\r') count++;
|
|
// this is the item we are after ...
|
|
if (aItemIndex + 1 == count) {
|
|
const char* q = p;
|
|
while (q < endPtr && *q != '\0' && *q != '\n' && *q != '\r') q++;
|
|
UTF8ToNewUTF16(p, q - p, convertedText, convertedTextLen);
|
|
break;
|
|
}
|
|
// skip to the end of the line
|
|
while (p < endPtr && *p != '\0' && *p != '\n') p++;
|
|
p++; // skip the actual newline as well.
|
|
}
|
|
|
|
// didn't find the desired item, so just pass the whole lot
|
|
if (!*convertedText) {
|
|
UTF8ToNewUTF16(data, datalen, convertedText, convertedTextLen);
|
|
}
|
|
}
|
|
|
|
// Spins event loop, called from JS.
|
|
// Can lead to another round of drag_motion events.
|
|
NS_IMETHODIMP
|
|
nsDragService::GetNumDropItems(uint32_t* aNumItems) {
|
|
LOGDRAGSERVICE("nsDragService::GetNumDropItems");
|
|
|
|
if (!mTargetWidget) {
|
|
LOGDRAGSERVICE(
|
|
"*** warning: GetNumDropItems \
|
|
called without a valid target widget!\n");
|
|
*aNumItems = 0;
|
|
return NS_OK;
|
|
}
|
|
|
|
bool isList = IsTargetContextList();
|
|
if (isList) {
|
|
if (!mSourceDataItems) {
|
|
*aNumItems = 0;
|
|
return NS_OK;
|
|
}
|
|
mSourceDataItems->GetLength(aNumItems);
|
|
} else {
|
|
GdkAtom gdkFlavor = gdk_atom_intern(gTextUriListType, FALSE);
|
|
if (!gdkFlavor) {
|
|
*aNumItems = 0;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsTArray<nsCString> dragFlavors;
|
|
GetDragFlavors(dragFlavors);
|
|
GetTargetDragData(gdkFlavor, dragFlavors);
|
|
|
|
if (mTargetDragData) {
|
|
const char* data = reinterpret_cast<char*>(mTargetDragData);
|
|
*aNumItems = CountTextUriListItems(data, mTargetDragDataLen);
|
|
} else
|
|
*aNumItems = 1;
|
|
}
|
|
LOGDRAGSERVICE(" NumOfDropItems %d", *aNumItems);
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsDragService::GetDragFlavors(nsTArray<nsCString>& aFlavors) {
|
|
for (GList* tmp = gdk_drag_context_list_targets(mTargetDragContext); tmp;
|
|
tmp = tmp->next) {
|
|
GdkAtom atom = GDK_POINTER_TO_ATOM(tmp->data);
|
|
GUniquePtr<gchar> name(gdk_atom_name(atom));
|
|
if (!name) {
|
|
continue;
|
|
}
|
|
aFlavors.AppendElement(nsCString(name.get()));
|
|
}
|
|
}
|
|
|
|
// Spins event loop, called from JS.
|
|
// Can lead to another round of drag_motion events.
|
|
NS_IMETHODIMP
|
|
nsDragService::GetData(nsITransferable* aTransferable, uint32_t aItemIndex) {
|
|
LOGDRAGSERVICE("nsDragService::GetData(), index %d", aItemIndex);
|
|
|
|
// make sure that we have a transferable
|
|
if (!aTransferable) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
if (!mTargetWidget) {
|
|
LOGDRAGSERVICE(
|
|
"*** failed: GetData called without a valid target widget!\n");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// get flavor list that includes all acceptable flavors (including
|
|
// ones obtained through conversion).
|
|
nsTArray<nsCString> flavors;
|
|
nsresult rv = aTransferable->FlavorsTransferableCanImport(flavors);
|
|
if (NS_FAILED(rv)) {
|
|
LOGDRAGSERVICE(" failed to get flavors, quit.");
|
|
return rv;
|
|
}
|
|
|
|
// check to see if this is an internal list
|
|
bool isList = IsTargetContextList();
|
|
|
|
if (isList) {
|
|
LOGDRAGSERVICE(" Process as a list...");
|
|
// find a matching flavor
|
|
for (uint32_t i = 0; i < flavors.Length(); ++i) {
|
|
nsCString& flavorStr = flavors[i];
|
|
LOGDRAGSERVICE(" [%d] flavor is %s\n", i, flavorStr.get());
|
|
// get the item with the right index
|
|
nsCOMPtr<nsITransferable> item =
|
|
do_QueryElementAt(mSourceDataItems, aItemIndex);
|
|
if (!item) continue;
|
|
|
|
nsCOMPtr<nsISupports> data;
|
|
LOGDRAGSERVICE(" trying to get transfer data for %s\n", flavorStr.get());
|
|
rv = item->GetTransferData(flavorStr.get(), getter_AddRefs(data));
|
|
if (NS_FAILED(rv)) {
|
|
LOGDRAGSERVICE(" failed.\n");
|
|
continue;
|
|
}
|
|
rv = aTransferable->SetTransferData(flavorStr.get(), data);
|
|
if (NS_FAILED(rv)) {
|
|
LOGDRAGSERVICE(" fail to set transfer data into transferable!\n");
|
|
continue;
|
|
}
|
|
LOGDRAGSERVICE(" succeeded\n");
|
|
// ok, we got the data
|
|
return NS_OK;
|
|
}
|
|
// if we got this far, we failed
|
|
LOGDRAGSERVICE(" failed to match flavors\n");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsTArray<nsCString> dragFlavors;
|
|
GetDragFlavors(dragFlavors);
|
|
|
|
// Now walk down the list of flavors. When we find one that is
|
|
// actually present, copy out the data into the transferable in that
|
|
// format. SetTransferData() implicitly handles conversions.
|
|
for (uint32_t i = 0; i < flavors.Length(); ++i) {
|
|
nsCString& flavorStr = flavors[i];
|
|
|
|
GdkAtom gdkFlavor;
|
|
if (flavorStr.EqualsLiteral(kTextMime)) {
|
|
gdkFlavor = gdk_atom_intern(gTextPlainUTF8Type, FALSE);
|
|
} else {
|
|
gdkFlavor = gdk_atom_intern(flavorStr.get(), FALSE);
|
|
}
|
|
LOGDRAGSERVICE(" we're getting data %s (gdk flavor %p)\n", flavorStr.get(),
|
|
gdkFlavor);
|
|
bool dataFound = false;
|
|
if (gdkFlavor) {
|
|
GetTargetDragData(gdkFlavor, dragFlavors);
|
|
}
|
|
if (mTargetDragData) {
|
|
LOGDRAGSERVICE(" dataFound = true\n");
|
|
dataFound = true;
|
|
} else {
|
|
LOGDRAGSERVICE(" dataFound = false, try conversions\n");
|
|
|
|
// Dragging and dropping from the file manager would cause us
|
|
// to parse the source text as a nsIFile URL.
|
|
if (flavorStr.EqualsLiteral(kFileMime)) {
|
|
LOGDRAGSERVICE(" conversion %s => %s", kFileMime, gTextUriListType);
|
|
gdkFlavor = gdk_atom_intern(gTextUriListType, FALSE);
|
|
GetTargetDragData(gdkFlavor, dragFlavors);
|
|
if (mTargetDragData) {
|
|
const char* text = static_cast<char*>(mTargetDragData);
|
|
char16_t* convertedText = nullptr;
|
|
uint32_t convertedTextLen = 0;
|
|
|
|
GetTextUriListItem(text, mTargetDragDataLen, aItemIndex,
|
|
&convertedText, &convertedTextLen);
|
|
|
|
if (convertedText) {
|
|
nsCOMPtr<nsIIOService> ioService = do_GetIOService(&rv);
|
|
nsCOMPtr<nsIURI> fileURI;
|
|
rv = ioService->NewURI(NS_ConvertUTF16toUTF8(convertedText),
|
|
nullptr, nullptr, getter_AddRefs(fileURI));
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsCOMPtr<nsIFileURL> fileURL = do_QueryInterface(fileURI, &rv);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsCOMPtr<nsIFile> file;
|
|
rv = fileURL->GetFile(getter_AddRefs(file));
|
|
if (NS_SUCCEEDED(rv)) {
|
|
// The common wrapping code at the end of
|
|
// this function assumes the data is text
|
|
// and calls text-specific operations.
|
|
// Make a secret hideout here for nsIFile
|
|
// objects and return early.
|
|
LOGDRAGSERVICE(" set as file %s",
|
|
NS_ConvertUTF16toUTF8(convertedText).get());
|
|
aTransferable->SetTransferData(flavorStr.get(), file);
|
|
g_free(convertedText);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
}
|
|
g_free(convertedText);
|
|
}
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// If we are looking for text/plain, try again with non utf-8 text.
|
|
if (flavorStr.EqualsLiteral(kTextMime)) {
|
|
LOGDRAGSERVICE(" conversion %s => %s", kTextMime, kTextMime);
|
|
gdkFlavor = gdk_atom_intern(kTextMime, FALSE);
|
|
GetTargetDragData(gdkFlavor, dragFlavors);
|
|
if (mTargetDragData) {
|
|
dataFound = true;
|
|
} // if plain text flavor present
|
|
} // if looking for text/plain
|
|
|
|
// if we are looking for text/x-moz-url and we failed to find
|
|
// it on the clipboard, try again with text/uri-list, and then
|
|
// _NETSCAPE_URL
|
|
if (flavorStr.EqualsLiteral(kURLMime)) {
|
|
LOGDRAGSERVICE(" conversion %s => %s", kURLMime, gTextUriListType);
|
|
gdkFlavor = gdk_atom_intern(gTextUriListType, FALSE);
|
|
GetTargetDragData(gdkFlavor, dragFlavors);
|
|
if (mTargetDragData) {
|
|
const char* data = reinterpret_cast<char*>(mTargetDragData);
|
|
char16_t* convertedText = nullptr;
|
|
uint32_t convertedTextLen = 0;
|
|
|
|
GetTextUriListItem(data, mTargetDragDataLen, aItemIndex,
|
|
&convertedText, &convertedTextLen);
|
|
|
|
if (convertedText) {
|
|
// out with the old, in with the new
|
|
g_free(mTargetDragData);
|
|
mTargetDragData = convertedText;
|
|
mTargetDragDataLen = convertedTextLen * 2;
|
|
dataFound = true;
|
|
}
|
|
}
|
|
if (!dataFound) {
|
|
LOGDRAGSERVICE(" conversion %s => %s", kURLMime, gMozUrlType);
|
|
gdkFlavor = gdk_atom_intern(gMozUrlType, FALSE);
|
|
GetTargetDragData(gdkFlavor, dragFlavors);
|
|
if (mTargetDragData) {
|
|
const char* castedText = reinterpret_cast<char*>(mTargetDragData);
|
|
char16_t* convertedText = nullptr;
|
|
uint32_t convertedTextLen = 0;
|
|
UTF8ToNewUTF16(castedText, mTargetDragDataLen, &convertedText,
|
|
&convertedTextLen);
|
|
if (convertedText) {
|
|
// out with the old, in with the new
|
|
g_free(mTargetDragData);
|
|
mTargetDragData = convertedText;
|
|
mTargetDragDataLen = convertedTextLen * 2;
|
|
dataFound = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
} // else we try one last ditch effort to find our data
|
|
|
|
if (dataFound) {
|
|
LOGDRAGSERVICE(" actual data found %s\n",
|
|
GUniquePtr<gchar>(gdk_atom_name(gdkFlavor)).get());
|
|
|
|
if (flavorStr.EqualsLiteral(kTextMime)) {
|
|
// The text is in UTF-8, so convert the text into UTF-16
|
|
const char* text = static_cast<char*>(mTargetDragData);
|
|
NS_ConvertUTF8toUTF16 ucs2string(text, mTargetDragDataLen);
|
|
char16_t* convertedText = ToNewUnicode(ucs2string, mozilla::fallible);
|
|
if (convertedText) {
|
|
g_free(mTargetDragData);
|
|
mTargetDragData = convertedText;
|
|
mTargetDragDataLen = ucs2string.Length() * 2;
|
|
}
|
|
}
|
|
|
|
if (flavorStr.EqualsLiteral(kJPEGImageMime) ||
|
|
flavorStr.EqualsLiteral(kJPGImageMime) ||
|
|
flavorStr.EqualsLiteral(kPNGImageMime) ||
|
|
flavorStr.EqualsLiteral(kGIFImageMime)) {
|
|
LOGDRAGSERVICE(" saving as image %s\n", flavorStr.get());
|
|
|
|
nsCOMPtr<nsIInputStream> byteStream;
|
|
NS_NewByteInputStream(getter_AddRefs(byteStream),
|
|
Span((char*)mTargetDragData, mTargetDragDataLen),
|
|
NS_ASSIGNMENT_COPY);
|
|
aTransferable->SetTransferData(flavorStr.get(), byteStream);
|
|
continue;
|
|
}
|
|
|
|
if (!flavorStr.EqualsLiteral(kCustomTypesMime)) {
|
|
// the DOM only wants LF, so convert from MacOS line endings
|
|
// to DOM line endings.
|
|
nsLinebreakHelpers::ConvertPlatformToDOMLinebreaks(
|
|
flavorStr.EqualsLiteral(kRTFMime), &mTargetDragData,
|
|
reinterpret_cast<int*>(&mTargetDragDataLen));
|
|
}
|
|
|
|
// put it into the transferable.
|
|
nsCOMPtr<nsISupports> genericDataWrapper;
|
|
nsPrimitiveHelpers::CreatePrimitiveForData(
|
|
flavorStr, mTargetDragData, mTargetDragDataLen,
|
|
getter_AddRefs(genericDataWrapper));
|
|
aTransferable->SetTransferData(flavorStr.get(), genericDataWrapper);
|
|
// we found one, get out of this loop!
|
|
break;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDragService::IsDataFlavorSupported(const char* aDataFlavor, bool* _retval) {
|
|
LOGDRAGSERVICE("nsDragService::IsDataFlavorSupported(%p) %s",
|
|
mTargetDragContext.get(), aDataFlavor);
|
|
if (!_retval) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
// set this to no by default
|
|
*_retval = false;
|
|
|
|
// check to make sure that we have a drag object set, here
|
|
if (!mTargetWidget) {
|
|
LOGDRAGSERVICE(
|
|
"*** warning: IsDataFlavorSupported called without a valid target "
|
|
"widget!\n");
|
|
return NS_OK;
|
|
}
|
|
|
|
// check to see if the target context is a list.
|
|
bool isList = IsTargetContextList();
|
|
// if it is, just look in the internal data since we are the source
|
|
// for it.
|
|
if (isList) {
|
|
LOGDRAGSERVICE(" It's a list");
|
|
uint32_t numDragItems = 0;
|
|
// if we don't have mDataItems we didn't start this drag so it's
|
|
// an external client trying to fool us.
|
|
if (!mSourceDataItems) {
|
|
LOGDRAGSERVICE(" quit");
|
|
return NS_OK;
|
|
}
|
|
mSourceDataItems->GetLength(&numDragItems);
|
|
LOGDRAGSERVICE(" drag items %d", numDragItems);
|
|
for (uint32_t itemIndex = 0; itemIndex < numDragItems; ++itemIndex) {
|
|
nsCOMPtr<nsITransferable> currItem =
|
|
do_QueryElementAt(mSourceDataItems, itemIndex);
|
|
if (currItem) {
|
|
nsTArray<nsCString> flavors;
|
|
currItem->FlavorsTransferableCanExport(flavors);
|
|
for (uint32_t i = 0; i < flavors.Length(); ++i) {
|
|
LOGDRAGSERVICE(" checking %s against %s\n", flavors[i].get(),
|
|
aDataFlavor);
|
|
if (flavors[i].Equals(aDataFlavor)) {
|
|
LOGDRAGSERVICE(" found.\n");
|
|
*_retval = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// check the target context vs. this flavor, one at a time
|
|
GList* tmp = nullptr;
|
|
if (mTargetDragContext) {
|
|
tmp = gdk_drag_context_list_targets(mTargetDragContext);
|
|
}
|
|
|
|
for (; tmp; tmp = tmp->next) {
|
|
/* Bug 331198 */
|
|
GdkAtom atom = GDK_POINTER_TO_ATOM(tmp->data);
|
|
GUniquePtr<gchar> name(gdk_atom_name(atom));
|
|
if (!name) {
|
|
continue;
|
|
}
|
|
|
|
if (strcmp(name.get(), aDataFlavor) == 0) {
|
|
*_retval = true;
|
|
}
|
|
// check for automatic text/uri-list -> text/x-moz-url mapping
|
|
else if (strcmp(name.get(), gTextUriListType) == 0 &&
|
|
(strcmp(aDataFlavor, kURLMime) == 0 ||
|
|
strcmp(aDataFlavor, kFileMime) == 0)) {
|
|
*_retval = true;
|
|
}
|
|
// check for automatic _NETSCAPE_URL -> text/x-moz-url mapping
|
|
else if (strcmp(name.get(), gMozUrlType) == 0 &&
|
|
(strcmp(aDataFlavor, kURLMime) == 0)) {
|
|
*_retval = true;
|
|
}
|
|
|
|
if (*_retval) {
|
|
LOGDRAGSERVICE(" supported, with converting %s => %s", name.get(),
|
|
aDataFlavor);
|
|
}
|
|
}
|
|
|
|
if (!*_retval) {
|
|
LOGDRAGSERVICE(" %s is not supported", aDataFlavor);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsDragService::ReplyToDragMotion(GdkDragContext* aDragContext,
|
|
guint aTime) {
|
|
LOGDRAGSERVICE("nsDragService::ReplyToDragMotion(%p) can drop %d",
|
|
aDragContext, mCanDrop);
|
|
|
|
GdkDragAction action = (GdkDragAction)0;
|
|
if (mCanDrop) {
|
|
// notify the dragger if we can drop
|
|
switch (mDragAction) {
|
|
case DRAGDROP_ACTION_COPY:
|
|
LOGDRAGSERVICE(" set explicit action copy");
|
|
action = GDK_ACTION_COPY;
|
|
break;
|
|
case DRAGDROP_ACTION_LINK:
|
|
LOGDRAGSERVICE(" set explicit action link");
|
|
action = GDK_ACTION_LINK;
|
|
break;
|
|
case DRAGDROP_ACTION_NONE:
|
|
LOGDRAGSERVICE(" set explicit action none");
|
|
action = (GdkDragAction)0;
|
|
break;
|
|
default:
|
|
LOGDRAGSERVICE(" set explicit action move");
|
|
action = GDK_ACTION_MOVE;
|
|
break;
|
|
}
|
|
} else {
|
|
LOGDRAGSERVICE(" mCanDrop is false, disable drop");
|
|
}
|
|
|
|
// gdk_drag_status() is a kind of red herring here.
|
|
// It does not control final D&D operation type (copy/move) but controls
|
|
// drop/no-drop D&D state and default cursor type (copy/move).
|
|
|
|
// Actual D&D operation is determined by mDragAction which is set by
|
|
// SetDragAction() from UpdateDragAction() or gecko/layout.
|
|
|
|
// State passed to gdk_drag_status() sets default D&D cursor type
|
|
// which can be switched by key control (CTRL/SHIFT).
|
|
// If user changes D&D cursor (and D&D operation) we're notified by
|
|
// gdk_drag_context_get_selected_action() and update mDragAction.
|
|
|
|
// But if we pass mDragAction back to gdk_drag_status() the D&D operation
|
|
// becames locked and won't be returned when D&D modifiers (CTRL/SHIFT)
|
|
// are released.
|
|
|
|
// This gdk_drag_context_get_selected_action() -> gdk_drag_status() ->
|
|
// gdk_drag_context_get_selected_action() cycle happens on Wayland.
|
|
if (widget::GdkIsWaylandDisplay() && action == GDK_ACTION_COPY) {
|
|
LOGDRAGSERVICE(" Wayland: switch copy to move");
|
|
action = GDK_ACTION_MOVE;
|
|
}
|
|
|
|
LOGDRAGSERVICE(" gdk_drag_status() action %d", action);
|
|
gdk_drag_status(aDragContext, action, aTime);
|
|
}
|
|
|
|
void nsDragService::EnsureCachedDataValidForContext(
|
|
GdkDragContext* aDragContext) {
|
|
if (mCachedDragContext != (uintptr_t)aDragContext) {
|
|
mCachedData.Clear();
|
|
mCachedDragContext = (uintptr_t)aDragContext;
|
|
}
|
|
}
|
|
|
|
void nsDragService::TargetDataReceived(GtkWidget* aWidget,
|
|
GdkDragContext* aContext, gint aX,
|
|
gint aY,
|
|
GtkSelectionData* aSelectionData,
|
|
guint aInfo, guint32 aTime) {
|
|
LOGDRAGSERVICE("nsDragService::TargetDataReceived(%p)", aContext);
|
|
TargetResetData();
|
|
|
|
EnsureCachedDataValidForContext(aContext);
|
|
|
|
mTargetDragDataReceived = true;
|
|
gint len = gtk_selection_data_get_length(aSelectionData);
|
|
const guchar* data = gtk_selection_data_get_data(aSelectionData);
|
|
|
|
GdkAtom target = gtk_selection_data_get_target(aSelectionData);
|
|
GUniquePtr<gchar> name(gdk_atom_name(target));
|
|
nsDependentCString flavor(name.get());
|
|
|
|
LOGDRAGSERVICE(" got data, MIME %s", flavor.get());
|
|
|
|
if (len > 0 && data) {
|
|
mTargetDragDataLen = len;
|
|
mTargetDragData = g_malloc(mTargetDragDataLen);
|
|
memcpy(mTargetDragData, data, mTargetDragDataLen);
|
|
|
|
LOGDRAGSERVICE(" got data, len = %d", mTargetDragDataLen);
|
|
|
|
nsTArray<uint8_t> copy;
|
|
if (!copy.SetLength(len, fallible)) {
|
|
return;
|
|
}
|
|
memcpy(copy.Elements(), data, len);
|
|
|
|
mCachedData.InsertOrUpdate(flavor, std::move(copy));
|
|
} else {
|
|
LOGDRAGSERVICE("Failed to get data. selection data len was %d\n",
|
|
mTargetDragDataLen);
|
|
mCachedData.InsertOrUpdate(flavor, nsTArray<uint8_t>());
|
|
}
|
|
}
|
|
|
|
bool nsDragService::IsTargetContextList(void) {
|
|
bool retval = false;
|
|
|
|
// gMimeListType drags only work for drags within a single process. The
|
|
// gtk_drag_get_source_widget() function will return nullptr if the source
|
|
// of the drag is another app, so we use it to check if a gMimeListType
|
|
// drop will work or not.
|
|
if (mTargetDragContext &&
|
|
gtk_drag_get_source_widget(mTargetDragContext) == nullptr) {
|
|
return retval;
|
|
}
|
|
|
|
GList* tmp = nullptr;
|
|
if (mTargetDragContext) {
|
|
tmp = gdk_drag_context_list_targets(mTargetDragContext);
|
|
}
|
|
|
|
// walk the list of context targets and see if one of them is a list
|
|
// of items.
|
|
for (; tmp; tmp = tmp->next) {
|
|
/* Bug 331198 */
|
|
GdkAtom atom = GDK_POINTER_TO_ATOM(tmp->data);
|
|
GUniquePtr<gchar> name(gdk_atom_name(atom));
|
|
if (name && !strcmp(name.get(), gMimeListType)) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
// Spins event loop, called from eDragTaskMotion handler by
|
|
// DispatchMotionEvents().
|
|
// Can lead to another round of drag_motion events.
|
|
void nsDragService::GetTargetDragData(GdkAtom aFlavor,
|
|
nsTArray<nsCString>& aDropFlavors) {
|
|
LOGDRAGSERVICE("nsDragService::GetTargetDragData(%p) '%s'\n",
|
|
mTargetDragContext.get(),
|
|
GUniquePtr<gchar>(gdk_atom_name(aFlavor)).get());
|
|
|
|
// reset our target data areas
|
|
TargetResetData();
|
|
|
|
GUniquePtr<gchar> name(gdk_atom_name(aFlavor));
|
|
nsDependentCString flavor(name.get());
|
|
|
|
// Return early when requested MIME is not offered by D&D.
|
|
if (!aDropFlavors.Contains(flavor)) {
|
|
LOGDRAGSERVICE(" %s is missing", flavor.get());
|
|
return;
|
|
}
|
|
|
|
if (mTargetDragContext) {
|
|
// We keep a copy of the requested data with the same life-time
|
|
// as mTargetDragContext.
|
|
// Especially with multiple items the same data is requested
|
|
// very often.
|
|
EnsureCachedDataValidForContext(mTargetDragContext);
|
|
if (auto cached = mCachedData.Lookup(flavor)) {
|
|
mTargetDragDataLen = cached->Length();
|
|
LOGDRAGSERVICE(" using cached data for %s, length is %d", flavor.get(),
|
|
mTargetDragDataLen);
|
|
|
|
if (mTargetDragDataLen) {
|
|
mTargetDragData = g_malloc(mTargetDragDataLen);
|
|
memcpy(mTargetDragData, cached->Elements(), mTargetDragDataLen);
|
|
}
|
|
|
|
mTargetDragDataReceived = true;
|
|
LOGDRAGSERVICE(" %s found in cache", flavor.get());
|
|
return;
|
|
}
|
|
|
|
gtk_drag_get_data(mTargetWidget, mTargetDragContext, aFlavor, mTargetTime);
|
|
|
|
LOGDRAGSERVICE(" about to start inner iteration.");
|
|
gtk_main_iteration();
|
|
|
|
PRTime entryTime = PR_Now();
|
|
while (!mTargetDragDataReceived && mDoingDrag) {
|
|
// check the number of iterations
|
|
LOGDRAGSERVICE(" doing iteration...\n");
|
|
PR_Sleep(PR_MillisecondsToInterval(10)); /* sleep for 10 ms/iteration */
|
|
if (PR_Now() - entryTime > NS_DND_TIMEOUT) {
|
|
LOGDRAGSERVICE(" failed to get D&D data in time!\n");
|
|
break;
|
|
}
|
|
gtk_main_iteration();
|
|
}
|
|
}
|
|
|
|
#ifdef MOZ_LOGGING
|
|
if (mTargetDragDataLen && mTargetDragData) {
|
|
LOGDRAGSERVICE(" %s got from system", flavor.get());
|
|
} else {
|
|
LOGDRAGSERVICE(" %s failed to get from system", flavor.get());
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void nsDragService::TargetResetData(void) {
|
|
mTargetDragDataReceived = false;
|
|
// make sure to free old data if we have to
|
|
g_free(mTargetDragData);
|
|
mTargetDragData = 0;
|
|
mTargetDragDataLen = 0;
|
|
}
|
|
|
|
static void TargetArrayAddTarget(nsTArray<GtkTargetEntry*>& aTargetArray,
|
|
const char* aTarget) {
|
|
GtkTargetEntry* target = (GtkTargetEntry*)g_malloc(sizeof(GtkTargetEntry));
|
|
target->target = g_strdup(aTarget);
|
|
target->flags = 0;
|
|
aTargetArray.AppendElement(target);
|
|
LOGDRAGSERVICESTATIC("adding target %s\n", aTarget);
|
|
}
|
|
|
|
static bool CanExportAsURLTarget(const char16_t* aURLData, uint32_t aURLLen) {
|
|
for (const nsLiteralString& disallowed : kDisallowedExportedSchemes) {
|
|
auto len = disallowed.AsString().Length();
|
|
if (len < aURLLen) {
|
|
if (!memcmp(disallowed.get(), aURLData,
|
|
/* len is char16_t char count */ len * 2)) {
|
|
LOGDRAGSERVICESTATIC("rejected URL scheme %s\n",
|
|
NS_ConvertUTF16toUTF8(disallowed).get());
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
GtkTargetList* nsDragService::GetSourceList(void) {
|
|
if (!mSourceDataItems) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsTArray<GtkTargetEntry*> targetArray;
|
|
GtkTargetEntry* targets;
|
|
GtkTargetList* targetList = 0;
|
|
uint32_t targetCount = 0;
|
|
unsigned int numDragItems = 0;
|
|
|
|
mSourceDataItems->GetLength(&numDragItems);
|
|
LOGDRAGSERVICE(" numDragItems = %d", numDragItems);
|
|
|
|
// Check to see if we're dragging > 1 item.
|
|
if (numDragItems > 1) {
|
|
// as the Xdnd protocol only supports a single item (or is it just
|
|
// gtk's implementation?), we don't advertise all flavours listed
|
|
// in the nsITransferable.
|
|
|
|
// the application/x-moz-internal-item-list format, which preserves
|
|
// all information for drags within the same mozilla instance.
|
|
TargetArrayAddTarget(targetArray, gMimeListType);
|
|
|
|
// check what flavours are supported so we can decide what other
|
|
// targets to advertise.
|
|
nsCOMPtr<nsITransferable> currItem = do_QueryElementAt(mSourceDataItems, 0);
|
|
|
|
if (currItem) {
|
|
nsTArray<nsCString> flavors;
|
|
currItem->FlavorsTransferableCanExport(flavors);
|
|
for (uint32_t i = 0; i < flavors.Length(); ++i) {
|
|
// check if text/x-moz-url is supported.
|
|
// If so, advertise
|
|
// text/uri-list.
|
|
if (flavors[i].EqualsLiteral(kURLMime)) {
|
|
TargetArrayAddTarget(targetArray, gTextUriListType);
|
|
break;
|
|
}
|
|
}
|
|
} // if item is a transferable
|
|
} else if (numDragItems == 1) {
|
|
nsCOMPtr<nsITransferable> currItem = do_QueryElementAt(mSourceDataItems, 0);
|
|
if (currItem) {
|
|
nsTArray<nsCString> flavors;
|
|
currItem->FlavorsTransferableCanExport(flavors);
|
|
for (uint32_t i = 0; i < flavors.Length(); ++i) {
|
|
nsCString& flavorStr = flavors[i];
|
|
|
|
TargetArrayAddTarget(targetArray, flavorStr.get());
|
|
|
|
// If there is a file, add the text/uri-list type.
|
|
if (flavorStr.EqualsLiteral(kFileMime)) {
|
|
TargetArrayAddTarget(targetArray, gTextUriListType);
|
|
}
|
|
// Check to see if this is text/plain.
|
|
else if (flavorStr.EqualsLiteral(kTextMime)) {
|
|
TargetArrayAddTarget(targetArray, gTextPlainUTF8Type);
|
|
}
|
|
// Check to see if this is the x-moz-url type.
|
|
// If it is, add _NETSCAPE_URL
|
|
// this is a type used by everybody.
|
|
else if (flavorStr.EqualsLiteral(kURLMime)) {
|
|
nsCOMPtr<nsISupports> data;
|
|
if (NS_SUCCEEDED(currItem->GetTransferData(flavorStr.get(),
|
|
getter_AddRefs(data)))) {
|
|
void* tmpData = nullptr;
|
|
uint32_t tmpDataLen = 0;
|
|
nsPrimitiveHelpers::CreateDataFromPrimitive(
|
|
nsDependentCString(flavorStr.get()), data, &tmpData,
|
|
&tmpDataLen);
|
|
if (tmpData) {
|
|
if (CanExportAsURLTarget(reinterpret_cast<char16_t*>(tmpData),
|
|
tmpDataLen / 2)) {
|
|
TargetArrayAddTarget(targetArray, gMozUrlType);
|
|
}
|
|
free(tmpData);
|
|
}
|
|
}
|
|
}
|
|
// check if application/x-moz-file-promise url is supported.
|
|
// If so, advertise text/uri-list.
|
|
else if (flavorStr.EqualsLiteral(kFilePromiseURLMime)) {
|
|
TargetArrayAddTarget(targetArray, gTextUriListType);
|
|
}
|
|
// XdndDirectSave, use on X.org only.
|
|
else if (widget::GdkIsX11Display() && !widget::IsXWaylandProtocol() &&
|
|
flavorStr.EqualsLiteral(kFilePromiseMime)) {
|
|
TargetArrayAddTarget(targetArray, gXdndDirectSaveType);
|
|
}
|
|
// kNativeImageMime
|
|
else if (flavorStr.EqualsLiteral(kNativeImageMime)) {
|
|
TargetArrayAddTarget(targetArray, kPNGImageMime);
|
|
TargetArrayAddTarget(targetArray, kJPEGImageMime);
|
|
TargetArrayAddTarget(targetArray, kJPGImageMime);
|
|
TargetArrayAddTarget(targetArray, kGIFImageMime);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// get all the elements that we created.
|
|
targetCount = targetArray.Length();
|
|
if (targetCount) {
|
|
// allocate space to create the list of valid targets
|
|
targets = (GtkTargetEntry*)g_malloc(sizeof(GtkTargetEntry) * targetCount);
|
|
uint32_t targetIndex;
|
|
for (targetIndex = 0; targetIndex < targetCount; ++targetIndex) {
|
|
GtkTargetEntry* disEntry = targetArray.ElementAt(targetIndex);
|
|
// this is a string reference but it will be freed later.
|
|
targets[targetIndex].target = disEntry->target;
|
|
targets[targetIndex].flags = disEntry->flags;
|
|
targets[targetIndex].info = 0;
|
|
}
|
|
targetList = gtk_target_list_new(targets, targetCount);
|
|
// clean up the target list
|
|
for (uint32_t cleanIndex = 0; cleanIndex < targetCount; ++cleanIndex) {
|
|
GtkTargetEntry* thisTarget = targetArray.ElementAt(cleanIndex);
|
|
g_free(thisTarget->target);
|
|
g_free(thisTarget);
|
|
}
|
|
g_free(targets);
|
|
} else {
|
|
// We need to create a dummy target list to be able initialize dnd.
|
|
targetList = gtk_target_list_new(nullptr, 0);
|
|
}
|
|
return targetList;
|
|
}
|
|
|
|
void nsDragService::SourceEndDragSession(GdkDragContext* aContext,
|
|
gint aResult) {
|
|
LOGDRAGSERVICE("SourceEndDragSession(%p) result %s\n", aContext,
|
|
kGtkDragResults[aResult]);
|
|
|
|
// this just releases the list of data items that we provide
|
|
mSourceDataItems = nullptr;
|
|
|
|
// Remove this property, if it exists, to satisfy the Direct Save Protocol.
|
|
GdkAtom property = gdk_atom_intern(gXdndDirectSaveType, FALSE);
|
|
gdk_property_delete(gdk_drag_context_get_source_window(aContext), property);
|
|
|
|
if (!mDoingDrag || mScheduledTask == eDragTaskSourceEnd)
|
|
// EndDragSession() was already called on drop
|
|
// or SourceEndDragSession on drag-failed
|
|
return;
|
|
|
|
if (mEndDragPoint.x < 0) {
|
|
// We don't have a drag end point, so guess
|
|
gint x, y;
|
|
GdkDisplay* display = gdk_display_get_default();
|
|
GdkScreen* screen = gdk_display_get_default_screen(display);
|
|
GtkWindow* window = GetGtkWindow(mSourceDocument);
|
|
GdkWindow* gdkWindow = window ? gtk_widget_get_window(GTK_WIDGET(window))
|
|
: gdk_screen_get_root_window(screen);
|
|
gdk_window_get_device_position(
|
|
gdkWindow, gdk_drag_context_get_device(aContext), &x, &y, nullptr);
|
|
gint scale = gdk_window_get_scale_factor(gdkWindow);
|
|
SetDragEndPoint(LayoutDeviceIntPoint(x * scale, y * scale));
|
|
LOGDRAGSERVICE(" guess drag end point %d %d\n", x * scale, y * scale);
|
|
}
|
|
|
|
// Either the drag was aborted or the drop occurred outside the app.
|
|
// The dropEffect of mDataTransfer is not updated for motion outside the
|
|
// app, but is needed for the dragend event, so set it now.
|
|
|
|
uint32_t dropEffect;
|
|
|
|
if (aResult == GTK_DRAG_RESULT_SUCCESS) {
|
|
LOGDRAGSERVICE(" drop is accepted");
|
|
// With GTK+ versions 2.10.x and prior the drag may have been
|
|
// cancelled (but no drag-failed signal would have been sent).
|
|
// aContext->dest_window will be non-nullptr only if the drop was
|
|
// sent.
|
|
GdkDragAction action = gdk_drag_context_get_dest_window(aContext)
|
|
? gdk_drag_context_get_actions(aContext)
|
|
: (GdkDragAction)0;
|
|
|
|
// Only one bit of action should be set, but, just in case someone
|
|
// does something funny, erring away from MOVE, and not recording
|
|
// unusual action combinations as NONE.
|
|
if (!action) {
|
|
LOGDRAGSERVICE(" drop action is none");
|
|
dropEffect = DRAGDROP_ACTION_NONE;
|
|
} else if (action & GDK_ACTION_COPY) {
|
|
LOGDRAGSERVICE(" drop action is copy");
|
|
dropEffect = DRAGDROP_ACTION_COPY;
|
|
} else if (action & GDK_ACTION_LINK) {
|
|
LOGDRAGSERVICE(" drop action is link");
|
|
dropEffect = DRAGDROP_ACTION_LINK;
|
|
} else if (action & GDK_ACTION_MOVE) {
|
|
LOGDRAGSERVICE(" drop action is move");
|
|
dropEffect = DRAGDROP_ACTION_MOVE;
|
|
} else {
|
|
LOGDRAGSERVICE(" drop action is copy");
|
|
dropEffect = DRAGDROP_ACTION_COPY;
|
|
}
|
|
} else {
|
|
LOGDRAGSERVICE(" drop action is none");
|
|
dropEffect = DRAGDROP_ACTION_NONE;
|
|
if (aResult != GTK_DRAG_RESULT_NO_TARGET) {
|
|
LOGDRAGSERVICE(" drop is user chancelled\n");
|
|
mUserCancelled = true;
|
|
}
|
|
}
|
|
|
|
if (mDataTransfer) {
|
|
mDataTransfer->SetDropEffectInt(dropEffect);
|
|
}
|
|
|
|
// Schedule the appropriate drag end dom events.
|
|
Schedule(eDragTaskSourceEnd, nullptr, nullptr, LayoutDeviceIntPoint(), 0);
|
|
}
|
|
|
|
static nsresult GetDownloadDetails(nsITransferable* aTransferable,
|
|
nsIURI** aSourceURI, nsAString& aFilename) {
|
|
*aSourceURI = nullptr;
|
|
MOZ_ASSERT(aTransferable != nullptr, "aTransferable must not be null");
|
|
|
|
// get the URI from the kFilePromiseURLMime flavor
|
|
nsCOMPtr<nsISupports> urlPrimitive;
|
|
nsresult rv = aTransferable->GetTransferData(kFilePromiseURLMime,
|
|
getter_AddRefs(urlPrimitive));
|
|
if (NS_FAILED(rv)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsCOMPtr<nsISupportsString> srcUrlPrimitive = do_QueryInterface(urlPrimitive);
|
|
if (!srcUrlPrimitive) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsAutoString srcUri;
|
|
srcUrlPrimitive->GetData(srcUri);
|
|
if (srcUri.IsEmpty()) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsCOMPtr<nsIURI> sourceURI;
|
|
NS_NewURI(getter_AddRefs(sourceURI), srcUri);
|
|
|
|
nsAutoString srcFileName;
|
|
nsCOMPtr<nsISupports> fileNamePrimitive;
|
|
rv = aTransferable->GetTransferData(kFilePromiseDestFilename,
|
|
getter_AddRefs(fileNamePrimitive));
|
|
if (NS_FAILED(rv)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsCOMPtr<nsISupportsString> srcFileNamePrimitive =
|
|
do_QueryInterface(fileNamePrimitive);
|
|
if (srcFileNamePrimitive) {
|
|
srcFileNamePrimitive->GetData(srcFileName);
|
|
} else {
|
|
nsCOMPtr<nsIURL> sourceURL = do_QueryInterface(sourceURI);
|
|
if (!sourceURL) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsAutoCString urlFileName;
|
|
sourceURL->GetFileName(urlFileName);
|
|
NS_UnescapeURL(urlFileName);
|
|
CopyUTF8toUTF16(urlFileName, srcFileName);
|
|
}
|
|
if (srcFileName.IsEmpty()) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
sourceURI.swap(*aSourceURI);
|
|
aFilename = srcFileName;
|
|
return NS_OK;
|
|
}
|
|
|
|
// See nsContentAreaDragDropDataProvider::GetFlavorData() for reference.
|
|
nsresult nsDragService::CreateTempFile(nsITransferable* aItem,
|
|
nsACString& aURI) {
|
|
LOGDRAGSERVICE("nsDragService::CreateTempFile()");
|
|
|
|
nsCOMPtr<nsIFile> tmpDir;
|
|
nsresult rv = NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(tmpDir));
|
|
if (NS_FAILED(rv)) {
|
|
LOGDRAGSERVICE(" Failed to get temp directory\n");
|
|
return rv;
|
|
}
|
|
|
|
nsCOMPtr<nsIInputStream> inputStream;
|
|
nsCOMPtr<nsIChannel> channel;
|
|
|
|
// extract the file name and source uri of the promise-file data
|
|
nsAutoString wideFileName;
|
|
nsCOMPtr<nsIURI> sourceURI;
|
|
rv = GetDownloadDetails(aItem, getter_AddRefs(sourceURI), wideFileName);
|
|
if (NS_FAILED(rv)) {
|
|
LOGDRAGSERVICE(
|
|
" Failed to extract file name and source uri from download url");
|
|
return rv;
|
|
}
|
|
|
|
// Check if the file is already stored at /tmp.
|
|
// It happens when drop destination is changed and SourceDataGet() is caled
|
|
// more than once.
|
|
nsAutoCString fileName;
|
|
CopyUTF16toUTF8(wideFileName, fileName);
|
|
auto fileLen = fileName.Length();
|
|
for (const auto& url : mTempFileUrls) {
|
|
auto URLLen = url.Length();
|
|
if (URLLen > fileLen &&
|
|
fileName.Equals(nsDependentCString(url, URLLen - fileLen))) {
|
|
aURI = url;
|
|
LOGDRAGSERVICE(" recycle file %s", PromiseFlatCString(aURI).get());
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// create and open channel for source uri
|
|
nsCOMPtr<nsIPrincipal> principal = aItem->GetRequestingPrincipal();
|
|
nsContentPolicyType contentPolicyType = aItem->GetContentPolicyType();
|
|
nsCOMPtr<nsICookieJarSettings> cookieJarSettings =
|
|
aItem->GetCookieJarSettings();
|
|
rv = NS_NewChannel(getter_AddRefs(channel), sourceURI, principal,
|
|
nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_SEC_CONTEXT_IS_NULL,
|
|
contentPolicyType, cookieJarSettings);
|
|
if (NS_FAILED(rv)) {
|
|
LOGDRAGSERVICE(" Failed to create new channel for source uri");
|
|
return rv;
|
|
}
|
|
|
|
rv = channel->Open(getter_AddRefs(inputStream));
|
|
if (NS_FAILED(rv)) {
|
|
LOGDRAGSERVICE(" Failed to open channel for source uri");
|
|
return rv;
|
|
}
|
|
|
|
// build the file:///tmp/dnd_file URL
|
|
tmpDir->Append(NS_LITERAL_STRING_FROM_CSTRING("dnd_file"));
|
|
rv = tmpDir->CreateUnique(nsIFile::DIRECTORY_TYPE, 0700);
|
|
if (NS_FAILED(rv)) {
|
|
LOGDRAGSERVICE(" Failed create tmp dir");
|
|
return rv;
|
|
}
|
|
|
|
// store a copy of that temporary directory so we can
|
|
// clean them up when nsDragService is destructed
|
|
nsCOMPtr<nsIFile> tempFile;
|
|
tmpDir->Clone(getter_AddRefs(tempFile));
|
|
mTemporaryFiles.AppendObject(tempFile);
|
|
if (mTempFileTimerID) {
|
|
g_source_remove(mTempFileTimerID);
|
|
mTempFileTimerID = 0;
|
|
}
|
|
|
|
// extend file:///tmp/dnd_file/<filename> URL
|
|
tmpDir->Append(wideFileName);
|
|
|
|
nsCOMPtr<nsIOutputStream> outputStream;
|
|
rv = NS_NewLocalFileOutputStream(getter_AddRefs(outputStream), tmpDir);
|
|
if (NS_FAILED(rv)) {
|
|
LOGDRAGSERVICE(" Failed to open output stream for temporary file");
|
|
return rv;
|
|
}
|
|
|
|
char buffer[8192];
|
|
uint32_t readCount = 0;
|
|
uint32_t writeCount = 0;
|
|
while (1) {
|
|
rv = inputStream->Read(buffer, sizeof(buffer), &readCount);
|
|
if (NS_FAILED(rv)) {
|
|
LOGDRAGSERVICE(" Failed to read data from source uri");
|
|
return rv;
|
|
}
|
|
|
|
if (readCount == 0) break;
|
|
|
|
rv = outputStream->Write(buffer, readCount, &writeCount);
|
|
if (NS_FAILED(rv)) {
|
|
LOGDRAGSERVICE(" Failed to write data to temporary file");
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
inputStream->Close();
|
|
rv = outputStream->Close();
|
|
if (NS_FAILED(rv)) {
|
|
LOGDRAGSERVICE(" Failed to write data to temporary file");
|
|
return rv;
|
|
}
|
|
|
|
nsCOMPtr<nsIURI> uri;
|
|
rv = NS_NewFileURI(getter_AddRefs(uri), tmpDir);
|
|
if (NS_FAILED(rv)) {
|
|
LOGDRAGSERVICE(" Failed to get file URI");
|
|
return rv;
|
|
}
|
|
nsCOMPtr<nsIURL> fileURL(do_QueryInterface(uri));
|
|
if (!fileURL) {
|
|
LOGDRAGSERVICE(" Failed to query file interface");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
rv = fileURL->GetSpec(aURI);
|
|
if (NS_FAILED(rv)) {
|
|
LOGDRAGSERVICE(" Failed to get filepath");
|
|
return rv;
|
|
}
|
|
|
|
// store url of temporary file
|
|
mTempFileUrls.AppendElement()->Assign(aURI);
|
|
LOGDRAGSERVICE(" storing tmp file as %s", PromiseFlatCString(aURI).get());
|
|
return NS_OK;
|
|
}
|
|
|
|
bool nsDragService::SourceDataAppendURLFileItem(nsACString& aURI,
|
|
nsITransferable* aItem) {
|
|
// If there is a file available, create a URI from the file.
|
|
nsCOMPtr<nsISupports> data;
|
|
nsresult rv = aItem->GetTransferData(kFileMime, getter_AddRefs(data));
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
if (nsCOMPtr<nsIFile> file = do_QueryInterface(data)) {
|
|
nsCOMPtr<nsIURI> fileURI;
|
|
NS_NewFileURI(getter_AddRefs(fileURI), file);
|
|
if (fileURI) {
|
|
fileURI->GetSpec(aURI);
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool nsDragService::SourceDataAppendURLItem(nsITransferable* aItem,
|
|
bool aExternalDrop,
|
|
nsACString& aURI) {
|
|
nsCOMPtr<nsISupports> data;
|
|
nsresult rv = aItem->GetTransferData(kURLMime, getter_AddRefs(data));
|
|
if (NS_FAILED(rv)) {
|
|
return SourceDataAppendURLFileItem(aURI, aItem);
|
|
}
|
|
|
|
nsCOMPtr<nsISupportsString> string = do_QueryInterface(data);
|
|
if (!string) {
|
|
return false;
|
|
}
|
|
|
|
nsAutoString text;
|
|
string->GetData(text);
|
|
if (!aExternalDrop || CanExportAsURLTarget(text.get(), text.Length())) {
|
|
AppendUTF16toUTF8(text, aURI);
|
|
return true;
|
|
}
|
|
|
|
// We're dropping to another application and the URL can't be exported
|
|
// as it's internal one (mailbox:// etc.)
|
|
// Try to get file target directly.
|
|
if (SourceDataAppendURLFileItem(aURI, aItem)) {
|
|
return true;
|
|
}
|
|
|
|
// We can't get the file directly so try to download it and save to tmp.
|
|
// The desktop or file manager expects for drags of promise-file data
|
|
// the text/uri-list flavor set to a temporary file that contains the
|
|
// promise-file data.
|
|
// We open a stream on the <protocol>:// url here and save the content
|
|
// to file:///tmp/dnd_file/<filename> and pass this url
|
|
// as text/uri-list flavor.
|
|
|
|
// check whether transferable contains FilePromiseUrl flavor...
|
|
nsCOMPtr<nsISupports> promiseData;
|
|
rv = aItem->GetTransferData(kFilePromiseURLMime, getter_AddRefs(promiseData));
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
|
|
// ... if so, create a temporary file and pass its url
|
|
return NS_SUCCEEDED(CreateTempFile(aItem, aURI));
|
|
}
|
|
|
|
void nsDragService::SourceDataGetUriList(GdkDragContext* aContext,
|
|
GtkSelectionData* aSelectionData,
|
|
uint32_t aDragItems) {
|
|
// Check if we're transfering data to another application.
|
|
// gdk_drag_context_get_dest_window() on X11 returns GdkWindow even for
|
|
// different application so use nsWindow::GetWindow() to check if that's
|
|
// our window.
|
|
const bool isExternalDrop =
|
|
widget::GdkIsX11Display()
|
|
? !nsWindow::GetWindow(gdk_drag_context_get_dest_window(aContext))
|
|
: !gdk_drag_context_get_dest_window(aContext);
|
|
|
|
LOGDRAGSERVICE("nsDragService::SourceDataGetUriLists() len %d external %d",
|
|
aDragItems, isExternalDrop);
|
|
|
|
// Disable processing of native events until we store all files to /tmp.
|
|
// Otherwise user can quit drop before we have all files saved
|
|
// and that cancels whole D&D.
|
|
AutoSuspendNativeEvents suspend;
|
|
|
|
nsAutoCString uriList;
|
|
for (uint32_t i = 0; i < aDragItems; i++) {
|
|
nsCOMPtr<nsITransferable> item = do_QueryElementAt(mSourceDataItems, i);
|
|
if (!item) {
|
|
continue;
|
|
}
|
|
nsAutoCString uri;
|
|
if (!SourceDataAppendURLItem(item, isExternalDrop, uri)) {
|
|
continue;
|
|
}
|
|
// text/x-moz-url is of form url + "\n" + title.
|
|
// We just want the url.
|
|
int32_t separatorPos = uri.FindChar(u'\n');
|
|
if (separatorPos >= 0) {
|
|
uri.Truncate(separatorPos);
|
|
}
|
|
uriList.Append(uri);
|
|
uriList.AppendLiteral("\r\n");
|
|
}
|
|
|
|
LOGDRAGSERVICE("URI list\n%s", uriList.get());
|
|
GdkAtom target = gtk_selection_data_get_target(aSelectionData);
|
|
gtk_selection_data_set(aSelectionData, target, 8, (guchar*)uriList.get(),
|
|
uriList.Length());
|
|
}
|
|
|
|
void nsDragService::SourceDataGetImage(nsITransferable* aItem,
|
|
GtkSelectionData* aSelectionData) {
|
|
LOGDRAGSERVICE("nsDragService::SourceDataGetImage()");
|
|
|
|
nsresult rv;
|
|
nsCOMPtr<nsISupports> data;
|
|
rv = aItem->GetTransferData(kNativeImageMime, getter_AddRefs(data));
|
|
NS_ENSURE_SUCCESS_VOID(rv);
|
|
|
|
LOGDRAGSERVICE(" posting image\n");
|
|
nsCOMPtr<imgIContainer> image = do_QueryInterface(data);
|
|
if (!image) {
|
|
LOGDRAGSERVICE(" do_QueryInterface failed\n");
|
|
return;
|
|
}
|
|
RefPtr<GdkPixbuf> pixbuf = nsImageToPixbuf::ImageToPixbuf(image);
|
|
if (!pixbuf) {
|
|
LOGDRAGSERVICE(" ImageToPixbuf failed\n");
|
|
return;
|
|
}
|
|
gtk_selection_data_set_pixbuf(aSelectionData, pixbuf);
|
|
LOGDRAGSERVICE(" image data set\n");
|
|
return;
|
|
}
|
|
|
|
void nsDragService::SourceDataGetXDND(nsITransferable* aItem,
|
|
GdkDragContext* aContext,
|
|
GtkSelectionData* aSelectionData) {
|
|
LOGDRAGSERVICE("nsDragService::SourceDataGetXDND");
|
|
|
|
// Indicate failure by default.
|
|
GdkAtom target = gtk_selection_data_get_target(aSelectionData);
|
|
gtk_selection_data_set(aSelectionData, target, 8, (guchar*)"E", 1);
|
|
|
|
GdkAtom property = gdk_atom_intern(gXdndDirectSaveType, FALSE);
|
|
GdkAtom type = gdk_atom_intern(kTextMime, FALSE);
|
|
|
|
GdkWindow* srcWindow = gdk_drag_context_get_source_window(aContext);
|
|
if (!srcWindow) {
|
|
LOGDRAGSERVICE(" failed to get source GdkWindow!");
|
|
return;
|
|
}
|
|
|
|
// Ensure null termination.
|
|
nsAutoCString data;
|
|
{
|
|
GUniquePtr<guchar> gdata;
|
|
gint length = 0;
|
|
if (!gdk_property_get(srcWindow, property, type, 0, INT32_MAX, FALSE,
|
|
nullptr, nullptr, &length, getter_Transfers(gdata))) {
|
|
LOGDRAGSERVICE(" failed to get gXdndDirectSaveType GdkWindow property.");
|
|
return;
|
|
}
|
|
data.Assign(nsDependentCSubstring((const char*)gdata.get(), length));
|
|
}
|
|
|
|
GUniquePtr<char> hostname;
|
|
GUniquePtr<char> fullpath(
|
|
g_filename_from_uri(data.get(), getter_Transfers(hostname), nullptr));
|
|
if (!fullpath) {
|
|
LOGDRAGSERVICE(" failed to get file from uri.");
|
|
return;
|
|
}
|
|
|
|
// If there is no hostname in the URI, NULL will be stored.
|
|
// We should not accept uris with from a different host.
|
|
if (hostname) {
|
|
nsCOMPtr<nsIPropertyBag2> infoService =
|
|
do_GetService(NS_SYSTEMINFO_CONTRACTID);
|
|
if (!infoService) {
|
|
return;
|
|
}
|
|
nsAutoCString host;
|
|
if (NS_SUCCEEDED(infoService->GetPropertyAsACString(u"host"_ns, host))) {
|
|
if (!host.Equals(hostname.get())) {
|
|
LOGDRAGSERVICE(" ignored drag because of different host.");
|
|
// Special error code "F" for this case.
|
|
gtk_selection_data_set(aSelectionData, target, 8, (guchar*)"F", 1);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
LOGDRAGSERVICE(" XdndDirectSave filepath is %s", fullpath.get());
|
|
|
|
nsCOMPtr<nsIFile> file;
|
|
if (NS_FAILED(NS_NewNativeLocalFile(nsDependentCString(fullpath.get()), false,
|
|
getter_AddRefs(file)))) {
|
|
LOGDRAGSERVICE(" failed to get local file");
|
|
return;
|
|
}
|
|
|
|
// We have to split the path into a directory and filename,
|
|
// because our internal file-promise API is based on these.
|
|
nsCOMPtr<nsIFile> directory;
|
|
file->GetParent(getter_AddRefs(directory));
|
|
|
|
aItem->SetTransferData(kFilePromiseDirectoryMime, directory);
|
|
|
|
nsCOMPtr<nsISupportsString> filenamePrimitive =
|
|
do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID);
|
|
if (!filenamePrimitive) {
|
|
return;
|
|
}
|
|
|
|
nsAutoString leafName;
|
|
file->GetLeafName(leafName);
|
|
filenamePrimitive->SetData(leafName);
|
|
|
|
aItem->SetTransferData(kFilePromiseDestFilename, filenamePrimitive);
|
|
|
|
nsCOMPtr<nsISupports> promiseData;
|
|
nsresult rv =
|
|
aItem->GetTransferData(kFilePromiseMime, getter_AddRefs(promiseData));
|
|
NS_ENSURE_SUCCESS_VOID(rv);
|
|
|
|
// Indicate success.
|
|
gtk_selection_data_set(aSelectionData, target, 8, (guchar*)"S", 1);
|
|
return;
|
|
}
|
|
|
|
bool nsDragService::SourceDataGetText(nsITransferable* aItem,
|
|
const nsACString& aMIMEType,
|
|
bool aNeedToDoConversionToPlainText,
|
|
GtkSelectionData* aSelectionData) {
|
|
LOGDRAGSERVICE("nsDragService::SourceDataGetPlain()");
|
|
|
|
nsresult rv;
|
|
nsCOMPtr<nsISupports> data;
|
|
rv = aItem->GetTransferData(PromiseFlatCString(aMIMEType).get(),
|
|
getter_AddRefs(data));
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
|
|
void* tmpData = nullptr;
|
|
uint32_t tmpDataLen = 0;
|
|
|
|
nsPrimitiveHelpers::CreateDataFromPrimitive(aMIMEType, data, &tmpData,
|
|
&tmpDataLen);
|
|
// if required, do the extra work to convert unicode to plain
|
|
// text and replace the output values with the plain text.
|
|
if (aNeedToDoConversionToPlainText) {
|
|
char* plainTextData = nullptr;
|
|
char16_t* castedUnicode = reinterpret_cast<char16_t*>(tmpData);
|
|
uint32_t plainTextLen = 0;
|
|
UTF16ToNewUTF8(castedUnicode, tmpDataLen / 2, &plainTextData,
|
|
&plainTextLen);
|
|
if (tmpData) {
|
|
// this was not allocated using glib
|
|
free(tmpData);
|
|
tmpData = plainTextData;
|
|
tmpDataLen = plainTextLen;
|
|
}
|
|
}
|
|
if (tmpData) {
|
|
// this copies the data
|
|
GdkAtom target = gtk_selection_data_get_target(aSelectionData);
|
|
gtk_selection_data_set(aSelectionData, target, 8, (guchar*)tmpData,
|
|
tmpDataLen);
|
|
// this wasn't allocated with glib
|
|
free(tmpData);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// We're asked to get data from mSourceDataItems and pass it to
|
|
// GtkSelectionData (Gtk D&D interface).
|
|
// We need to check mSourceDataItems data type and try to convert it
|
|
// to data type accepted by Gtk.
|
|
void nsDragService::SourceDataGet(GtkWidget* aWidget, GdkDragContext* aContext,
|
|
GtkSelectionData* aSelectionData,
|
|
guint32 aTime) {
|
|
LOGDRAGSERVICE("nsDragService::SourceDataGet(%p)", aContext);
|
|
|
|
GdkAtom target = gtk_selection_data_get_target(aSelectionData);
|
|
GUniquePtr<gchar> requestedTypeName(gdk_atom_name(target));
|
|
if (!requestedTypeName) {
|
|
LOGDRAGSERVICE(" failed to get atom name.\n");
|
|
return;
|
|
}
|
|
|
|
LOGDRAGSERVICE(" Gtk asks us for %s data type\n", requestedTypeName.get());
|
|
// check to make sure that we have data items to return.
|
|
if (!mSourceDataItems) {
|
|
LOGDRAGSERVICE(" Failed to get our data items\n");
|
|
return;
|
|
}
|
|
|
|
uint32_t dragItems;
|
|
mSourceDataItems->GetLength(&dragItems);
|
|
LOGDRAGSERVICE(" source data items %d", dragItems);
|
|
|
|
nsDependentCString mimeFlavor(requestedTypeName.get());
|
|
if (mimeFlavor.EqualsLiteral(gTextUriListType)) {
|
|
SourceDataGetUriList(aContext, aSelectionData, dragItems);
|
|
return;
|
|
}
|
|
|
|
#ifdef MOZ_LOGGING
|
|
if (dragItems > 1) {
|
|
LOGDRAGSERVICE(
|
|
" There are %d data items but we're asked for %s MIME type. Only "
|
|
"first data element can be transfered!",
|
|
dragItems, mimeFlavor.get());
|
|
}
|
|
#endif
|
|
|
|
nsCOMPtr<nsITransferable> item = do_QueryElementAt(mSourceDataItems, 0);
|
|
if (!item) {
|
|
LOGDRAGSERVICE(" Failed to get SourceDataItems!");
|
|
return;
|
|
}
|
|
|
|
if (mimeFlavor.EqualsLiteral(kTextMime) ||
|
|
mimeFlavor.EqualsLiteral(gTextPlainUTF8Type)) {
|
|
SourceDataGetText(item, nsDependentCString(kTextMime),
|
|
/* aNeedToDoConversionToPlainText */ true,
|
|
aSelectionData);
|
|
// no fallback for text mime types
|
|
return;
|
|
}
|
|
// Someone is asking for the special Direct Save Protocol type.
|
|
else if (mimeFlavor.EqualsLiteral(gXdndDirectSaveType)) {
|
|
SourceDataGetXDND(item, aContext, aSelectionData);
|
|
// no fallback for XDND mime types
|
|
return;
|
|
} else if (mimeFlavor.EqualsLiteral(kPNGImageMime) ||
|
|
mimeFlavor.EqualsLiteral(kJPEGImageMime) ||
|
|
mimeFlavor.EqualsLiteral(kJPGImageMime) ||
|
|
mimeFlavor.EqualsLiteral(kGIFImageMime)) {
|
|
// no fallback for image mime types
|
|
SourceDataGetImage(item, aSelectionData);
|
|
return;
|
|
} else if (mimeFlavor.EqualsLiteral(gMozUrlType)) {
|
|
// Someone was asking for _NETSCAPE_URL. We need to get it from
|
|
// transferable as x-moz-url and convert it to plain text.
|
|
// No need to check
|
|
if (SourceDataGetText(item, nsDependentCString(kURLMime),
|
|
/* aNeedToDoConversionToPlainText */ true,
|
|
aSelectionData)) {
|
|
return;
|
|
}
|
|
}
|
|
// Just try to get and set whatever we're asked for.
|
|
SourceDataGetText(item, mimeFlavor,
|
|
/* aNeedToDoConversionToPlainText */ false, aSelectionData);
|
|
}
|
|
|
|
void nsDragService::SourceBeginDrag(GdkDragContext* aContext) {
|
|
LOGDRAGSERVICE("nsDragService::SourceBeginDrag(%p)\n", aContext);
|
|
|
|
nsCOMPtr<nsITransferable> transferable =
|
|
do_QueryElementAt(mSourceDataItems, 0);
|
|
if (!transferable) return;
|
|
|
|
nsTArray<nsCString> flavors;
|
|
nsresult rv = transferable->FlavorsTransferableCanImport(flavors);
|
|
NS_ENSURE_SUCCESS(rv, );
|
|
|
|
for (uint32_t i = 0; i < flavors.Length(); ++i) {
|
|
if (flavors[i].EqualsLiteral(kFilePromiseDestFilename)) {
|
|
nsCOMPtr<nsISupports> data;
|
|
rv = transferable->GetTransferData(kFilePromiseDestFilename,
|
|
getter_AddRefs(data));
|
|
if (NS_FAILED(rv)) {
|
|
LOGDRAGSERVICE(" transferable doesn't contain '%s",
|
|
kFilePromiseDestFilename);
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsISupportsString> fileName = do_QueryInterface(data);
|
|
if (!fileName) {
|
|
LOGDRAGSERVICE(" failed to get file name");
|
|
return;
|
|
}
|
|
|
|
nsAutoString fileNameStr;
|
|
fileName->GetData(fileNameStr);
|
|
|
|
nsCString fileNameCStr;
|
|
CopyUTF16toUTF8(fileNameStr, fileNameCStr);
|
|
|
|
GdkAtom property = gdk_atom_intern(gXdndDirectSaveType, FALSE);
|
|
GdkAtom type = gdk_atom_intern(kTextMime, FALSE);
|
|
|
|
gdk_property_change(gdk_drag_context_get_source_window(aContext),
|
|
property, type, 8, GDK_PROP_MODE_REPLACE,
|
|
(const guchar*)fileNameCStr.get(),
|
|
fileNameCStr.Length());
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsDragService::SetDragIcon(GdkDragContext* aContext) {
|
|
if (!mHasImage && !mSelection) return;
|
|
|
|
LOGDRAGSERVICE("nsDragService::SetDragIcon(%p)", aContext);
|
|
|
|
LayoutDeviceIntRect dragRect;
|
|
nsPresContext* pc;
|
|
RefPtr<SourceSurface> surface;
|
|
DrawDrag(mSourceNode, mRegion, mScreenPosition, &dragRect, &surface, &pc);
|
|
if (!pc) {
|
|
LOGDRAGSERVICE(" PresContext is missing!");
|
|
return;
|
|
}
|
|
|
|
const auto screenPoint =
|
|
LayoutDeviceIntPoint::Round(mScreenPosition * pc->CSSToDevPixelScale());
|
|
int32_t offsetX = screenPoint.x - dragRect.x;
|
|
int32_t offsetY = screenPoint.y - dragRect.y;
|
|
|
|
// If a popup is set as the drag image, use its widget. Otherwise, use
|
|
// the surface that DrawDrag created.
|
|
//
|
|
// XXX: Disable drag popups on GTK 3.19.4 and above: see bug 1264454.
|
|
// Fix this once a new GTK version ships that does not destroy our
|
|
// widget in gtk_drag_set_icon_widget.
|
|
// This is fixed in GTK 3.24
|
|
// by
|
|
// https://gitlab.gnome.org/GNOME/gtk/-/commit/c27c4e2048acb630feb24c31288f802345e99f4c
|
|
bool gtk_drag_set_icon_widget_is_working =
|
|
gtk_check_version(3, 19, 4) != nullptr ||
|
|
gtk_check_version(3, 24, 0) == nullptr;
|
|
if (mDragPopup && gtk_drag_set_icon_widget_is_working) {
|
|
GtkWidget* gtkWidget = nullptr;
|
|
nsIFrame* frame = mDragPopup->GetPrimaryFrame();
|
|
if (frame) {
|
|
// DrawDrag ensured that this is a popup frame.
|
|
nsCOMPtr<nsIWidget> widget = frame->GetNearestWidget();
|
|
if (widget) {
|
|
gtkWidget = (GtkWidget*)widget->GetNativeData(NS_NATIVE_SHELLWIDGET);
|
|
if (gtkWidget) {
|
|
// When mDragPopup has a parent it's already attached to D&D context.
|
|
// That may happens when D&D operation is aborted but not finished
|
|
// on Gtk side yet so let's remove it now.
|
|
if (GtkWidget* parent = gtk_widget_get_parent(gtkWidget)) {
|
|
gtk_container_remove(GTK_CONTAINER(parent), gtkWidget);
|
|
}
|
|
LOGDRAGSERVICE(" set drag popup [%p]", widget.get());
|
|
OpenDragPopup();
|
|
gtk_drag_set_icon_widget(aContext, gtkWidget, offsetX, offsetY);
|
|
return;
|
|
} else {
|
|
LOGDRAGSERVICE(" NS_NATIVE_SHELLWIDGET is missing!");
|
|
}
|
|
} else {
|
|
LOGDRAGSERVICE(" NearestWidget is missing!");
|
|
}
|
|
} else {
|
|
LOGDRAGSERVICE(" PrimaryFrame is missing!");
|
|
}
|
|
}
|
|
|
|
if (surface) {
|
|
LOGDRAGSERVICE(" We have a surface");
|
|
if (!SetAlphaPixmap(surface, aContext, offsetX, offsetY, dragRect)) {
|
|
RefPtr<GdkPixbuf> dragPixbuf = nsImageToPixbuf::SourceSurfaceToPixbuf(
|
|
surface, dragRect.width, dragRect.height);
|
|
if (dragPixbuf) {
|
|
LOGDRAGSERVICE(" set drag pixbuf");
|
|
gtk_drag_set_icon_pixbuf(aContext, dragPixbuf, offsetX, offsetY);
|
|
} else {
|
|
LOGDRAGSERVICE(" SourceSurfaceToPixbuf failed!");
|
|
}
|
|
}
|
|
} else {
|
|
LOGDRAGSERVICE(" Surface is missing!");
|
|
}
|
|
}
|
|
|
|
static void invisibleSourceDragBegin(GtkWidget* aWidget,
|
|
GdkDragContext* aContext, gpointer aData) {
|
|
LOGDRAGSERVICESTATIC("invisibleSourceDragBegin (%p)", aContext);
|
|
nsDragService* dragService = (nsDragService*)aData;
|
|
|
|
dragService->SourceBeginDrag(aContext);
|
|
dragService->SetDragIcon(aContext);
|
|
}
|
|
|
|
static void invisibleSourceDragDataGet(GtkWidget* aWidget,
|
|
GdkDragContext* aContext,
|
|
GtkSelectionData* aSelectionData,
|
|
guint aInfo, guint32 aTime,
|
|
gpointer aData) {
|
|
LOGDRAGSERVICESTATIC("invisibleSourceDragDataGet (%p)", aContext);
|
|
nsDragService* dragService = (nsDragService*)aData;
|
|
dragService->SourceDataGet(aWidget, aContext, aSelectionData, aTime);
|
|
}
|
|
|
|
static gboolean invisibleSourceDragFailed(GtkWidget* aWidget,
|
|
GdkDragContext* aContext,
|
|
gint aResult, gpointer aData) {
|
|
#ifdef MOZ_WAYLAND
|
|
// Wayland and X11 uses different drag results here. When drag target is
|
|
// missing X11 passes GDK_DRAG_CANCEL_NO_TARGET
|
|
// (from gdk_dnd_handle_button_event()/gdkdnd-x11.c)
|
|
// as backend X11 has info about other application windows.
|
|
// Wayland does not have such info so it always passes
|
|
// GDK_DRAG_CANCEL_ERROR error code
|
|
// (see data_source_cancelled/gdkselection-wayland.c).
|
|
// Bug 1527976
|
|
if (widget::GdkIsWaylandDisplay() && aResult == GTK_DRAG_RESULT_ERROR) {
|
|
for (GList* tmp = gdk_drag_context_list_targets(aContext); tmp;
|
|
tmp = tmp->next) {
|
|
GdkAtom atom = GDK_POINTER_TO_ATOM(tmp->data);
|
|
GUniquePtr<gchar> name(gdk_atom_name(atom));
|
|
if (name && !strcmp(name.get(), gTabDropType)) {
|
|
aResult = GTK_DRAG_RESULT_NO_TARGET;
|
|
LOGDRAGSERVICESTATIC("invisibleSourceDragFailed(%p): Wayland tab drop",
|
|
aContext);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
LOGDRAGSERVICESTATIC("invisibleSourceDragFailed(%p) %s", aContext,
|
|
kGtkDragResults[aResult]);
|
|
nsDragService* dragService = (nsDragService*)aData;
|
|
// End the drag session now (rather than waiting for the drag-end signal)
|
|
// so that operations performed on dropEffect == none can start immediately
|
|
// rather than waiting for the drag-failed animation to finish.
|
|
dragService->SourceEndDragSession(aContext, aResult);
|
|
|
|
// We should return TRUE to disable the drag-failed animation iff the
|
|
// source performed an operation when dropEffect was none, but the handler
|
|
// of the dragend DOM event doesn't provide this information.
|
|
return FALSE;
|
|
}
|
|
|
|
static void invisibleSourceDragEnd(GtkWidget* aWidget, GdkDragContext* aContext,
|
|
gpointer aData) {
|
|
LOGDRAGSERVICESTATIC("invisibleSourceDragEnd(%p)", aContext);
|
|
nsDragService* dragService = (nsDragService*)aData;
|
|
|
|
// The drag has ended. Release the hostages!
|
|
dragService->SourceEndDragSession(aContext, GTK_DRAG_RESULT_SUCCESS);
|
|
}
|
|
|
|
// The following methods handle responding to GTK drag signals and
|
|
// tracking state between these signals.
|
|
//
|
|
// In general, GTK does not expect us to run the event loop while handling its
|
|
// drag signals, however our drag event handlers may run the
|
|
// event loop, most often to fetch information about the drag data.
|
|
//
|
|
// GTK, for example, uses the return value from drag-motion signals to
|
|
// determine whether drag-leave signals should be sent. If an event loop is
|
|
// run during drag-motion the XdndLeave message can get processed but when GTK
|
|
// receives the message it does not yet know that it needs to send the
|
|
// drag-leave signal to our widget.
|
|
//
|
|
// After a drag-drop signal, we need to reply with gtk_drag_finish().
|
|
// However, gtk_drag_finish should happen after the drag-drop signal handler
|
|
// returns so that when the Motif drag protocol is used, the
|
|
// XmTRANSFER_SUCCESS during gtk_drag_finish is sent after the XmDROP_START
|
|
// reply sent on return from the drag-drop signal handler.
|
|
//
|
|
// Similarly drag-end for a successful drag and drag-failed are not good
|
|
// times to run a nested event loop as gtk_drag_drop_finished() and
|
|
// gtk_drag_source_info_destroy() don't gtk_drag_clear_source_info() or remove
|
|
// drop_timeout until after at least the first of these signals is sent.
|
|
// Processing other events (e.g. a slow GDK_DROP_FINISHED reply, or the drop
|
|
// timeout) could cause gtk_drag_drop_finished to be called again with the
|
|
// same GtkDragSourceInfo, which won't like being destroyed twice.
|
|
//
|
|
// Therefore we reply to the signals immediately and schedule a task to
|
|
// dispatch the Gecko events, which may run the event loop.
|
|
//
|
|
// Action in response to drag-leave signals is also delayed until the event
|
|
// loop runs again so that we find out whether a drag-drop signal follows.
|
|
//
|
|
// A single task is scheduled to manage responses to all three GTK signals.
|
|
// If further signals are received while the task is scheduled, the scheduled
|
|
// response is updated, sometimes effectively compressing successive signals.
|
|
//
|
|
// No Gecko drag events are dispatched (during nested event loops) while other
|
|
// Gecko drag events are in flight. This helps event handlers that may not
|
|
// expect nested events, while accessing an event's dataTransfer for example.
|
|
|
|
gboolean nsDragService::ScheduleMotionEvent(nsWindow* aWindow,
|
|
GdkDragContext* aDragContext,
|
|
LayoutDeviceIntPoint aWindowPoint,
|
|
guint aTime) {
|
|
if (aDragContext && mScheduledTask == eDragTaskMotion) {
|
|
// The drag source has sent another motion message before we've
|
|
// replied to the previous. That shouldn't happen with Xdnd. The
|
|
// spec for Motif drags is less clear, but we'll just update the
|
|
// scheduled task with the new position reply only to the most
|
|
// recent message.
|
|
NS_WARNING("Drag Motion message received before previous reply was sent");
|
|
}
|
|
|
|
// Returning TRUE means we'll reply with a status message, unless we first
|
|
// get a leave.
|
|
return Schedule(eDragTaskMotion, aWindow, aDragContext, aWindowPoint, aTime);
|
|
}
|
|
|
|
void nsDragService::ScheduleLeaveEvent() {
|
|
// We don't know at this stage whether a drop signal will immediately
|
|
// follow. If the drop signal gets sent it will happen before we return
|
|
// to the main loop and the scheduled leave task will be replaced.
|
|
if (!Schedule(eDragTaskLeave, nullptr, nullptr, LayoutDeviceIntPoint(), 0)) {
|
|
NS_WARNING("Drag leave after drop");
|
|
}
|
|
}
|
|
|
|
gboolean nsDragService::ScheduleDropEvent(nsWindow* aWindow,
|
|
GdkDragContext* aDragContext,
|
|
LayoutDeviceIntPoint aWindowPoint,
|
|
guint aTime) {
|
|
if (!Schedule(eDragTaskDrop, aWindow, aDragContext, aWindowPoint, aTime)) {
|
|
NS_WARNING("Additional drag drop ignored");
|
|
return FALSE;
|
|
}
|
|
|
|
SetDragEndPoint(aWindowPoint);
|
|
|
|
// We'll reply with gtk_drag_finish().
|
|
return TRUE;
|
|
}
|
|
|
|
#ifdef MOZ_LOGGING
|
|
const char* nsDragService::GetDragServiceTaskName(DragTask aTask) {
|
|
static const char* taskNames[] = {"eDragTaskNone", "eDragTaskMotion",
|
|
"eDragTaskLeave", "eDragTaskDrop",
|
|
"eDragTaskSourceEnd"};
|
|
MOZ_ASSERT(size_t(aTask) < ArrayLength(taskNames));
|
|
return taskNames[aTask];
|
|
}
|
|
#endif
|
|
|
|
gboolean nsDragService::Schedule(DragTask aTask, nsWindow* aWindow,
|
|
GdkDragContext* aDragContext,
|
|
LayoutDeviceIntPoint aWindowPoint,
|
|
guint aTime) {
|
|
// If there is an existing leave or motion task scheduled, then that
|
|
// will be replaced. When the new task is run, it will dispatch
|
|
// any necessary leave or motion events.
|
|
|
|
// If aTask is eDragTaskSourceEnd, then it will replace even a scheduled
|
|
// drop event (which could happen if the drop event has not been processed
|
|
// within the allowed time). Otherwise, if we haven't yet run a scheduled
|
|
// drop or end task, just say that we are not ready to receive another
|
|
// drop.
|
|
LOGDRAGSERVICE("nsDragService::Schedule(%p) task %s window %p\n",
|
|
aDragContext, GetDragServiceTaskName(aTask), aWindow);
|
|
|
|
if (mScheduledTask == eDragTaskSourceEnd ||
|
|
(mScheduledTask == eDragTaskDrop && aTask != eDragTaskSourceEnd)) {
|
|
LOGDRAGSERVICE(" task does not fit recent task %s, quit!\n",
|
|
GetDragServiceTaskName(mScheduledTask));
|
|
return FALSE;
|
|
}
|
|
|
|
mScheduledTask = aTask;
|
|
mPendingWindow = aWindow;
|
|
mPendingDragContext = aDragContext;
|
|
mPendingWindowPoint = aWindowPoint;
|
|
mPendingTime = aTime;
|
|
|
|
if (!mTaskSource) {
|
|
// High priority is used here because we want to process motion events
|
|
// right after drag_motion event handler which is called by Gtk.
|
|
// An ideal scenario is to call TaskDispatchCallback() directly here
|
|
// but we can't do that. TaskDispatchCallback() spins gtk event loop
|
|
// while nsDragService::Schedule() is already called from event loop
|
|
// (by drag_motion* gtk_widget events) so that direct call will cause
|
|
// nested recursion.
|
|
mTaskSource = g_timeout_add_full(G_PRIORITY_HIGH, 0, TaskDispatchCallback,
|
|
this, nullptr);
|
|
}
|
|
|
|
// We need to reply to drag_motion event on Wayland immediately,
|
|
// see Bug 1730203.
|
|
if (widget::GdkIsWaylandDisplay() && mScheduledTask == eDragTaskMotion) {
|
|
UpdateDragAction(aDragContext);
|
|
ReplyToDragMotion(aDragContext, aTime);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean nsDragService::TaskDispatchCallback(gpointer data) {
|
|
RefPtr<nsDragService> dragService = static_cast<nsDragService*>(data);
|
|
AutoEventLoop loop(dragService);
|
|
return dragService->RunScheduledTask();
|
|
}
|
|
|
|
gboolean nsDragService::RunScheduledTask() {
|
|
LOGDRAGSERVICE(
|
|
"nsDragService::RunScheduledTask() task %s mTargetWindow %p "
|
|
"mPendingWindow %p\n",
|
|
GetDragServiceTaskName(mScheduledTask), mTargetWindow.get(),
|
|
mPendingWindow.get());
|
|
|
|
// Don't run RunScheduledTask() twice. As we use it in main thread only
|
|
// we don't need to be thread safe here.
|
|
if (mScheduledTaskIsRunning) {
|
|
LOGDRAGSERVICE(" sheduled task is already running, quit.");
|
|
return FALSE;
|
|
}
|
|
AutoRestore<bool> guard(mScheduledTaskIsRunning);
|
|
mScheduledTaskIsRunning = true;
|
|
|
|
if (mTargetWindow && mTargetWindow != mPendingWindow) {
|
|
LOGDRAGSERVICE(" dispatch eDragExit (%p)\n", mTargetWindow.get());
|
|
mTargetWindow->DispatchDragEvent(eDragExit, mTargetWindowPoint, 0);
|
|
|
|
if (!mSourceNode) {
|
|
// The drag that was initiated in a different app. End the drag
|
|
// session, since we're done with it for now (until the user drags
|
|
// back into this app).
|
|
EndDragSession(false, GetCurrentModifiers());
|
|
}
|
|
}
|
|
|
|
// It is possible that the pending state has been updated during dispatch
|
|
// of the leave event. That's fine.
|
|
|
|
// Now we collect the pending state because, from this point on, we want
|
|
// to use the same state for all events dispatched. All state is updated
|
|
// so that when other tasks are scheduled during dispatch here, this
|
|
// task is considered to have already been run.
|
|
bool positionHasChanged = mPendingWindow != mTargetWindow ||
|
|
mPendingWindowPoint != mTargetWindowPoint;
|
|
DragTask task = mScheduledTask;
|
|
mScheduledTask = eDragTaskNone;
|
|
mTargetWindow = std::move(mPendingWindow);
|
|
mTargetWindowPoint = mPendingWindowPoint;
|
|
|
|
if (task == eDragTaskLeave || task == eDragTaskSourceEnd) {
|
|
LOGDRAGSERVICE(" quit, selected task %s\n", GetDragServiceTaskName(task));
|
|
if (task == eDragTaskSourceEnd) {
|
|
// Dispatch drag end events.
|
|
EndDragSession(true, GetCurrentModifiers());
|
|
}
|
|
|
|
// Nothing more to do
|
|
// Returning false removes the task source from the event loop.
|
|
mTaskSource = 0;
|
|
return FALSE;
|
|
}
|
|
|
|
// This may be the start of a destination drag session.
|
|
StartDragSession();
|
|
|
|
// mTargetWidget may be nullptr if the window has been destroyed.
|
|
// (The leave event is not scheduled if a drop task is still scheduled.)
|
|
// We still reply appropriately to indicate that the drop will or didn't
|
|
// succeeed.
|
|
mTargetWidget = mTargetWindow ? mTargetWindow->GetGtkWidget() : nullptr;
|
|
LOGDRAGSERVICE(" start drag session mTargetWindow %p mTargetWidget %p\n",
|
|
mTargetWindow.get(), mTargetWidget.get());
|
|
LOGDRAGSERVICE(" mPendingDragContext %p => mTargetDragContext %p\n",
|
|
mPendingDragContext.get(), mTargetDragContext.get());
|
|
mTargetDragContext = std::move(mPendingDragContext);
|
|
mTargetTime = mPendingTime;
|
|
|
|
// http://www.whatwg.org/specs/web-apps/current-work/multipage/dnd.html#drag-and-drop-processing-model
|
|
// (as at 27 December 2010) indicates that a "drop" event should only be
|
|
// fired (at the current target element) if the current drag operation is
|
|
// not none. The current drag operation will only be set to a non-none
|
|
// value during a "dragover" event.
|
|
//
|
|
// If the user has ended the drag before any dragover events have been
|
|
// sent, then the spec recommends skipping the drop (because the current
|
|
// drag operation is none). However, here we assume that, by releasing
|
|
// the mouse button, the user has indicated that they want to drop, so we
|
|
// proceed with the drop where possible.
|
|
//
|
|
// In order to make the events appear to content in the same way as if the
|
|
// spec is being followed we make sure to dispatch a "dragover" event with
|
|
// appropriate coordinates and check canDrop before the "drop" event.
|
|
//
|
|
// When the Xdnd protocol is used for source/destination communication (as
|
|
// should be the case with GTK source applications) a dragover event
|
|
// should have already been sent during the drag-motion signal, which
|
|
// would have already been received because XdndDrop messages do not
|
|
// contain a position. However, we can't assume the same when the Motif
|
|
// protocol is used.
|
|
if (task == eDragTaskMotion || positionHasChanged) {
|
|
LOGDRAGSERVICE(" process motion event\n");
|
|
UpdateDragAction();
|
|
TakeDragEventDispatchedToChildProcess(); // Clear the old value.
|
|
DispatchMotionEvents();
|
|
if (task == eDragTaskMotion) {
|
|
if (TakeDragEventDispatchedToChildProcess()) {
|
|
mTargetDragContextForRemote = mTargetDragContext;
|
|
} else {
|
|
// Reply to tell the source whether we can drop and what
|
|
// action would be taken.
|
|
ReplyToDragMotion();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (task == eDragTaskDrop) {
|
|
LOGDRAGSERVICE(" process drop task\n");
|
|
gboolean success = DispatchDropEvent();
|
|
|
|
// Perhaps we should set the del parameter to TRUE when the drag
|
|
// action is move, but we don't know whether the data was successfully
|
|
// transferred.
|
|
if (mTargetDragContext) {
|
|
LOGDRAGSERVICE(" drag finished\n");
|
|
gtk_drag_finish(mTargetDragContext, success,
|
|
/* del = */ FALSE, mTargetTime);
|
|
}
|
|
// Make sure to end the drag session. If this drag started in a
|
|
// different app, we won't get a drag_end signal to end it from.
|
|
EndDragSession(true, GetCurrentModifiers());
|
|
}
|
|
|
|
// We're done with the drag context.
|
|
LOGDRAGSERVICE(" clear mTargetWindow mTargetWidget and other data\n");
|
|
mTargetWidget = nullptr;
|
|
mTargetDragContext = nullptr;
|
|
|
|
// If we got another drag signal while running the sheduled task, that
|
|
// must have happened while running a nested event loop. Leave the task
|
|
// source on the event loop.
|
|
if (mScheduledTask != eDragTaskNone) return TRUE;
|
|
|
|
// We have no task scheduled.
|
|
// Returning false removes the task source from the event loop.
|
|
LOGDRAGSERVICE(" remove task source\n");
|
|
mTaskSource = 0;
|
|
return FALSE;
|
|
}
|
|
|
|
// This will update the drag action based on the information in the
|
|
// drag context. Gtk gets this from a combination of the key settings
|
|
// and what the source is offering.
|
|
|
|
void nsDragService::UpdateDragAction(GdkDragContext* aDragContext) {
|
|
// This doesn't look right. dragSession.dragAction is used by
|
|
// nsContentUtils::SetDataTransferInEvent() to set the initial
|
|
// dataTransfer.dropEffect, so GdkDragContext::suggested_action would be
|
|
// more appropriate. GdkDragContext::actions should be used to set
|
|
// dataTransfer.effectAllowed, which doesn't currently happen with
|
|
// external sources.
|
|
LOGDRAGSERVICE("nsDragService::UpdateDragAction(%p)", aDragContext);
|
|
|
|
// default is to do nothing
|
|
int action = nsIDragService::DRAGDROP_ACTION_NONE;
|
|
GdkDragAction gdkAction = GDK_ACTION_DEFAULT;
|
|
if (aDragContext) {
|
|
gdkAction = gdk_drag_context_get_actions(aDragContext);
|
|
LOGDRAGSERVICE(" gdk_drag_context_get_actions() returns 0x%X", gdkAction);
|
|
|
|
// When D&D modifiers (CTRL/SHIFT) are involved,
|
|
// gdk_drag_context_get_actions() on X11 returns selected action but
|
|
// Wayland returns all allowed actions.
|
|
|
|
// So we need to call gdk_drag_context_get_selected_action() on Wayland
|
|
// to get potential D&D modifier.
|
|
// gdk_drag_context_get_selected_action() is also affected by
|
|
// gdk_drag_status(), see nsDragService::ReplyToDragMotion().
|
|
if (widget::GdkIsWaylandDisplay()) {
|
|
GdkDragAction gdkActionSelected =
|
|
gdk_drag_context_get_selected_action(aDragContext);
|
|
LOGDRAGSERVICE(" gdk_drag_context_get_selected_action() returns 0x%X",
|
|
gdkActionSelected);
|
|
if (gdkActionSelected) {
|
|
gdkAction = gdkActionSelected;
|
|
}
|
|
}
|
|
}
|
|
|
|
// set the default just in case nothing matches below
|
|
if (gdkAction & GDK_ACTION_DEFAULT) {
|
|
LOGDRAGSERVICE(" set default move");
|
|
action = nsIDragService::DRAGDROP_ACTION_MOVE;
|
|
}
|
|
// first check to see if move is set
|
|
if (gdkAction & GDK_ACTION_MOVE) {
|
|
LOGDRAGSERVICE(" set explicit move");
|
|
action = nsIDragService::DRAGDROP_ACTION_MOVE;
|
|
} else if (gdkAction & GDK_ACTION_LINK) {
|
|
// then fall to the others
|
|
LOGDRAGSERVICE(" set explicit link");
|
|
action = nsIDragService::DRAGDROP_ACTION_LINK;
|
|
} else if (gdkAction & GDK_ACTION_COPY) {
|
|
// copy is ctrl
|
|
LOGDRAGSERVICE(" set explicit copy");
|
|
action = nsIDragService::DRAGDROP_ACTION_COPY;
|
|
}
|
|
|
|
// update the drag information
|
|
SetDragAction(action);
|
|
}
|
|
|
|
void nsDragService::UpdateDragAction() { UpdateDragAction(mTargetDragContext); }
|
|
|
|
NS_IMETHODIMP
|
|
nsDragService::UpdateDragEffect() {
|
|
LOGDRAGSERVICE("nsDragService::UpdateDragEffect() from e10s child process");
|
|
if (mTargetDragContextForRemote) {
|
|
ReplyToDragMotion(mTargetDragContextForRemote, mTargetTime);
|
|
mTargetDragContextForRemote = nullptr;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsDragService::ReplyToDragMotion() {
|
|
if (mTargetDragContext) {
|
|
ReplyToDragMotion(mTargetDragContext, mTargetTime);
|
|
}
|
|
}
|
|
|
|
void nsDragService::DispatchMotionEvents() {
|
|
FireDragEventAtSource(eDrag, GetCurrentModifiers());
|
|
if (mTargetWindow) {
|
|
mTargetWindow->DispatchDragEvent(eDragOver, mTargetWindowPoint,
|
|
mTargetTime);
|
|
}
|
|
}
|
|
|
|
// Returns true if the drop was successful
|
|
gboolean nsDragService::DispatchDropEvent() {
|
|
// We need to check IsDestroyed here because the nsRefPtr
|
|
// only protects this from being deleted, it does NOT protect
|
|
// against nsView::~nsView() calling Destroy() on it, bug 378273.
|
|
if (!mTargetWindow || mTargetWindow->IsDestroyed()) {
|
|
return FALSE;
|
|
}
|
|
|
|
EventMessage msg = mCanDrop ? eDrop : eDragExit;
|
|
|
|
mTargetWindow->DispatchDragEvent(msg, mTargetWindowPoint, mTargetTime);
|
|
|
|
return mCanDrop;
|
|
}
|
|
|
|
/* static */
|
|
uint32_t nsDragService::GetCurrentModifiers() {
|
|
return mozilla::widget::KeymapWrapper::ComputeCurrentKeyModifiers();
|
|
}
|
|
|
|
#undef LOGDRAGSERVICE
|