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fune/docshell/base/nsDocShellTreeOwner.cpp
Emilio Cobos Álvarez 678c18063d Bug 1583203 - Annotate nsINode::OwnerDoc() as MOZ_NONNULL_RETURN. r=smaug 
People keep adding useless null-checks and it was not clear what the consensus
was from bug 1441165, but this should be unobjectionable I guess.

Differential Revision: https://phabricator.services.mozilla.com/D46781

--HG--
extra : moz-landing-system : lando
2019-09-23 18:12:19 +00:00

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// Local Includes
#include "nsDocShellTreeOwner.h"
#include "nsWebBrowser.h"
// Helper Classes
#include "nsContentUtils.h"
#include "nsSize.h"
#include "mozilla/ReflowInput.h"
#include "nsIServiceManager.h"
#include "nsComponentManagerUtils.h"
#include "nsString.h"
#include "nsAtom.h"
#include "nsReadableUtils.h"
#include "nsUnicharUtils.h"
#include "nsISimpleEnumerator.h"
#include "mozilla/LookAndFeel.h"
// Interfaces needed to be included
#include "nsPresContext.h"
#include "nsITooltipListener.h"
#include "nsINode.h"
#include "Link.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/MouseEvent.h"
#include "mozilla/dom/SVGTitleElement.h"
#include "nsIFormControl.h"
#include "nsIImageLoadingContent.h"
#include "nsIWebNavigation.h"
#include "nsIStringBundle.h"
#include "nsPIDOMWindow.h"
#include "nsPIWindowRoot.h"
#include "nsIWindowWatcher.h"
#include "nsPIWindowWatcher.h"
#include "nsIPrompt.h"
#include "nsIRemoteTab.h"
#include "nsIBrowserChild.h"
#include "nsRect.h"
#include "nsIWebBrowserChromeFocus.h"
#include "nsIContent.h"
#include "imgIContainer.h"
#include "nsViewManager.h"
#include "nsView.h"
#include "nsIConstraintValidation.h"
#include "mozilla/Attributes.h"
#include "mozilla/EventListenerManager.h"
#include "mozilla/dom/DragEvent.h"
#include "mozilla/dom/Event.h" // for Event
#include "mozilla/dom/File.h" // for input type=file
#include "mozilla/dom/FileList.h" // for input type=file
#include "mozilla/dom/LoadURIOptionsBinding.h"
#include "mozilla/PresShell.h"
#include "mozilla/TextEvents.h"
using namespace mozilla;
using namespace mozilla::dom;
// A helper routine that navigates the tricky path from a |nsWebBrowser| to
// a |EventTarget| via the window root and chrome event handler.
static nsresult GetDOMEventTarget(nsWebBrowser* aInBrowser,
EventTarget** aTarget) {
if (!aInBrowser) {
return NS_ERROR_INVALID_POINTER;
}
nsCOMPtr<mozIDOMWindowProxy> domWindow;
aInBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
if (!domWindow) {
return NS_ERROR_FAILURE;
}
auto* outerWindow = nsPIDOMWindowOuter::From(domWindow);
nsPIDOMWindowOuter* rootWindow = outerWindow->GetPrivateRoot();
NS_ENSURE_TRUE(rootWindow, NS_ERROR_FAILURE);
nsCOMPtr<EventTarget> target = rootWindow->GetChromeEventHandler();
NS_ENSURE_TRUE(target, NS_ERROR_FAILURE);
target.forget(aTarget);
return NS_OK;
}
nsDocShellTreeOwner::nsDocShellTreeOwner()
: mWebBrowser(nullptr),
mTreeOwner(nullptr),
mPrimaryContentShell(nullptr),
mWebBrowserChrome(nullptr),
mOwnerWin(nullptr),
mOwnerRequestor(nullptr) {}
nsDocShellTreeOwner::~nsDocShellTreeOwner() { RemoveChromeListeners(); }
NS_IMPL_ADDREF(nsDocShellTreeOwner)
NS_IMPL_RELEASE(nsDocShellTreeOwner)
NS_INTERFACE_MAP_BEGIN(nsDocShellTreeOwner)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDocShellTreeOwner)
NS_INTERFACE_MAP_ENTRY(nsIDocShellTreeOwner)
NS_INTERFACE_MAP_ENTRY(nsIBaseWindow)
NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor)
NS_INTERFACE_MAP_ENTRY(nsIWebProgressListener)
NS_INTERFACE_MAP_ENTRY(nsIDOMEventListener)
NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
NS_INTERFACE_MAP_END
//*****************************************************************************
// nsDocShellTreeOwner::nsIInterfaceRequestor
//*****************************************************************************
NS_IMETHODIMP
nsDocShellTreeOwner::GetInterface(const nsIID& aIID, void** aSink) {
NS_ENSURE_ARG_POINTER(aSink);
if (NS_SUCCEEDED(QueryInterface(aIID, aSink))) {
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIWebBrowserChromeFocus))) {
if (mWebBrowserChromeWeak != nullptr) {
return mWebBrowserChromeWeak->QueryReferent(aIID, aSink);
}
return mOwnerWin->QueryInterface(aIID, aSink);
}
if (aIID.Equals(NS_GET_IID(nsIPrompt))) {
nsCOMPtr<nsIPrompt> prompt;
EnsurePrompter();
prompt = mPrompter;
if (prompt) {
prompt.forget(aSink);
return NS_OK;
}
return NS_NOINTERFACE;
}
if (aIID.Equals(NS_GET_IID(nsIAuthPrompt))) {
nsCOMPtr<nsIAuthPrompt> prompt;
EnsureAuthPrompter();
prompt = mAuthPrompter;
if (prompt) {
prompt.forget(aSink);
return NS_OK;
}
return NS_NOINTERFACE;
}
nsCOMPtr<nsIInterfaceRequestor> req = GetOwnerRequestor();
if (req) {
return req->GetInterface(aIID, aSink);
}
return NS_NOINTERFACE;
}
//*****************************************************************************
// nsDocShellTreeOwner::nsIDocShellTreeOwner
//*****************************************************************************
void nsDocShellTreeOwner::EnsurePrompter() {
if (mPrompter) {
return;
}
nsCOMPtr<nsIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID));
if (wwatch && mWebBrowser) {
nsCOMPtr<mozIDOMWindowProxy> domWindow;
mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
if (domWindow) {
wwatch->GetNewPrompter(domWindow, getter_AddRefs(mPrompter));
}
}
}
void nsDocShellTreeOwner::EnsureAuthPrompter() {
if (mAuthPrompter) {
return;
}
nsCOMPtr<nsIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID));
if (wwatch && mWebBrowser) {
nsCOMPtr<mozIDOMWindowProxy> domWindow;
mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
if (domWindow) {
wwatch->GetNewAuthPrompter(domWindow, getter_AddRefs(mAuthPrompter));
}
}
}
void nsDocShellTreeOwner::AddToWatcher() {
if (mWebBrowser) {
nsCOMPtr<mozIDOMWindowProxy> domWindow;
mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
if (domWindow) {
nsCOMPtr<nsPIWindowWatcher> wwatch(
do_GetService(NS_WINDOWWATCHER_CONTRACTID));
if (wwatch) {
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome();
if (webBrowserChrome) {
wwatch->AddWindow(domWindow, webBrowserChrome);
}
}
}
}
}
void nsDocShellTreeOwner::RemoveFromWatcher() {
if (mWebBrowser) {
nsCOMPtr<mozIDOMWindowProxy> domWindow;
mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
if (domWindow) {
nsCOMPtr<nsPIWindowWatcher> wwatch(
do_GetService(NS_WINDOWWATCHER_CONTRACTID));
if (wwatch) {
wwatch->RemoveWindow(domWindow);
}
}
}
}
void nsDocShellTreeOwner::EnsureContentTreeOwner() {
if (mContentTreeOwner) {
return;
}
mContentTreeOwner = new nsDocShellTreeOwner();
nsCOMPtr<nsIWebBrowserChrome> browserChrome = GetWebBrowserChrome();
if (browserChrome) {
mContentTreeOwner->SetWebBrowserChrome(browserChrome);
}
if (mWebBrowser) {
mContentTreeOwner->WebBrowser(mWebBrowser);
}
}
NS_IMETHODIMP
nsDocShellTreeOwner::ContentShellAdded(nsIDocShellTreeItem* aContentShell,
bool aPrimary) {
if (mTreeOwner) return mTreeOwner->ContentShellAdded(aContentShell, aPrimary);
EnsureContentTreeOwner();
aContentShell->SetTreeOwner(mContentTreeOwner);
if (aPrimary) {
mPrimaryContentShell = aContentShell;
mPrimaryRemoteTab = nullptr;
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::ContentShellRemoved(nsIDocShellTreeItem* aContentShell) {
if (mTreeOwner) {
return mTreeOwner->ContentShellRemoved(aContentShell);
}
if (mPrimaryContentShell == aContentShell) {
mPrimaryContentShell = nullptr;
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetPrimaryContentShell(nsIDocShellTreeItem** aShell) {
NS_ENSURE_ARG_POINTER(aShell);
if (mTreeOwner) {
return mTreeOwner->GetPrimaryContentShell(aShell);
}
nsCOMPtr<nsIDocShellTreeItem> shell;
if (!mPrimaryRemoteTab) {
shell =
mPrimaryContentShell ? mPrimaryContentShell : mWebBrowser->mDocShell;
}
shell.forget(aShell);
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::RemoteTabAdded(nsIRemoteTab* aTab, bool aPrimary) {
if (mTreeOwner) {
return mTreeOwner->RemoteTabAdded(aTab, aPrimary);
}
if (aPrimary) {
mPrimaryRemoteTab = aTab;
mPrimaryContentShell = nullptr;
} else if (mPrimaryRemoteTab == aTab) {
mPrimaryRemoteTab = nullptr;
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::RemoteTabRemoved(nsIRemoteTab* aTab) {
if (mTreeOwner) {
return mTreeOwner->RemoteTabRemoved(aTab);
}
if (aTab == mPrimaryRemoteTab) {
mPrimaryRemoteTab = nullptr;
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetPrimaryRemoteTab(nsIRemoteTab** aTab) {
if (mTreeOwner) {
return mTreeOwner->GetPrimaryRemoteTab(aTab);
}
nsCOMPtr<nsIRemoteTab> tab = mPrimaryRemoteTab;
tab.forget(aTab);
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetPrimaryContentSize(int32_t* aWidth, int32_t* aHeight) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetPrimaryContentSize(int32_t aWidth, int32_t aHeight) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetRootShellSize(int32_t* aWidth, int32_t* aHeight) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetRootShellSize(int32_t aWidth, int32_t aHeight) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SizeShellTo(nsIDocShellTreeItem* aShellItem, int32_t aCX,
int32_t aCY) {
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome();
NS_ENSURE_STATE(mTreeOwner || webBrowserChrome);
if (nsCOMPtr<nsIDocShellTreeOwner> treeOwner = mTreeOwner) {
return treeOwner->SizeShellTo(aShellItem, aCX, aCY);
}
if (aShellItem == mWebBrowser->mDocShell) {
nsCOMPtr<nsIBrowserChild> browserChild =
do_QueryInterface(webBrowserChrome);
if (browserChild) {
// The XUL window to resize is in the parent process, but there we
// won't be able to get aShellItem to do the hack in
// nsXULWindow::SizeShellTo, so let's send the width and height of
// aShellItem too.
nsCOMPtr<nsIBaseWindow> shellAsWin(do_QueryInterface(aShellItem));
NS_ENSURE_TRUE(shellAsWin, NS_ERROR_FAILURE);
int32_t width = 0;
int32_t height = 0;
shellAsWin->GetSize(&width, &height);
return browserChild->RemoteSizeShellTo(aCX, aCY, width, height);
}
// XXX: this is weird, but we used to call a method here
// (webBrowserChrome->SizeBrowserTo()) whose implementations all failed
// like this, so...
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_ENSURE_TRUE(aShellItem, NS_ERROR_FAILURE);
RefPtr<Document> document = aShellItem->GetDocument();
NS_ENSURE_TRUE(document, NS_ERROR_FAILURE);
NS_ENSURE_TRUE(document->GetDocumentElement(), NS_ERROR_FAILURE);
// Set the preferred Size
// XXX
NS_ERROR("Implement this");
/*
Set the preferred size on the aShellItem.
*/
RefPtr<nsPresContext> presContext = mWebBrowser->mDocShell->GetPresContext();
NS_ENSURE_TRUE(presContext, NS_ERROR_FAILURE);
RefPtr<PresShell> presShell = presContext->GetPresShell();
NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(
presShell->ResizeReflow(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE),
NS_ERROR_FAILURE);
// XXX: this is weird, but we used to call a method here
// (webBrowserChrome->SizeBrowserTo()) whose implementations all failed like
// this, so...
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetPersistence(bool aPersistPosition, bool aPersistSize,
bool aPersistSizeMode) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetPersistence(bool* aPersistPosition, bool* aPersistSize,
bool* aPersistSizeMode) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetTabCount(uint32_t* aResult) {
if (mTreeOwner) {
return mTreeOwner->GetTabCount(aResult);
}
*aResult = 0;
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetHasPrimaryContent(bool* aResult) {
*aResult = mPrimaryRemoteTab || mPrimaryContentShell;
return NS_OK;
}
//*****************************************************************************
// nsDocShellTreeOwner::nsIBaseWindow
//*****************************************************************************
NS_IMETHODIMP
nsDocShellTreeOwner::InitWindow(nativeWindow aParentNativeWindow,
nsIWidget* aParentWidget, int32_t aX,
int32_t aY, int32_t aCX, int32_t aCY) {
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::Create() { return NS_ERROR_NULL_POINTER; }
NS_IMETHODIMP
nsDocShellTreeOwner::Destroy() {
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome();
if (webBrowserChrome) {
// XXX: this is weird, but we used to call a method here
// (webBrowserChrome->DestroyBrowserWindow()) whose implementations all
// failed like this, so...
return NS_ERROR_NOT_IMPLEMENTED;
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetUnscaledDevicePixelsPerCSSPixel(double* aScale) {
if (mWebBrowser) {
return mWebBrowser->GetUnscaledDevicePixelsPerCSSPixel(aScale);
}
*aScale = 1.0;
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetDevicePixelsPerDesktopPixel(double* aScale) {
if (mWebBrowser) {
return mWebBrowser->GetDevicePixelsPerDesktopPixel(aScale);
}
*aScale = 1.0;
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetPositionDesktopPix(int32_t aX, int32_t aY) {
if (mWebBrowser) {
nsresult rv = mWebBrowser->SetPositionDesktopPix(aX, aY);
NS_ENSURE_SUCCESS(rv, rv);
}
double scale = 1.0;
GetDevicePixelsPerDesktopPixel(&scale);
return SetPosition(NSToIntRound(aX * scale), NSToIntRound(aY * scale));
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetPosition(int32_t aX, int32_t aY) {
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin) {
return ownerWin->SetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_POSITION,
aX, aY, 0, 0);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetPosition(int32_t* aX, int32_t* aY) {
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin) {
return ownerWin->GetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_POSITION,
aX, aY, nullptr, nullptr);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetSize(int32_t aCX, int32_t aCY, bool aRepaint) {
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin) {
return ownerWin->SetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_SIZE_OUTER,
0, 0, aCX, aCY);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetSize(int32_t* aCX, int32_t* aCY) {
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin) {
return ownerWin->GetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_SIZE_OUTER,
nullptr, nullptr, aCX, aCY);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetPositionAndSize(int32_t aX, int32_t aY, int32_t aCX,
int32_t aCY, uint32_t aFlags) {
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin) {
return ownerWin->SetDimensions(
nsIEmbeddingSiteWindow::DIM_FLAGS_SIZE_OUTER |
nsIEmbeddingSiteWindow::DIM_FLAGS_POSITION,
aX, aY, aCX, aCY);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetPositionAndSize(int32_t* aX, int32_t* aY, int32_t* aCX,
int32_t* aCY) {
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin) {
return ownerWin->GetDimensions(
nsIEmbeddingSiteWindow::DIM_FLAGS_SIZE_OUTER |
nsIEmbeddingSiteWindow::DIM_FLAGS_POSITION,
aX, aY, aCX, aCY);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::Repaint(bool aForce) { return NS_ERROR_NULL_POINTER; }
NS_IMETHODIMP
nsDocShellTreeOwner::GetParentWidget(nsIWidget** aParentWidget) {
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetParentWidget(nsIWidget* aParentWidget) {
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetParentNativeWindow(nativeWindow* aParentNativeWindow) {
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin) {
return ownerWin->GetSiteWindow(aParentNativeWindow);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetParentNativeWindow(nativeWindow aParentNativeWindow) {
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetNativeHandle(nsAString& aNativeHandle) {
// the nativeHandle should be accessed from nsIXULWindow
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetVisibility(bool* aVisibility) {
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin) {
return ownerWin->GetVisibility(aVisibility);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetVisibility(bool aVisibility) {
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin) {
return ownerWin->SetVisibility(aVisibility);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetEnabled(bool* aEnabled) {
NS_ENSURE_ARG_POINTER(aEnabled);
*aEnabled = true;
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetEnabled(bool aEnabled) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetMainWidget(nsIWidget** aMainWidget) {
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetFocus() {
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin) {
return ownerWin->SetFocus();
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetTitle(nsAString& aTitle) {
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin) {
return ownerWin->GetTitle(aTitle);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetTitle(const nsAString& aTitle) {
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin) {
return ownerWin->SetTitle(aTitle);
}
return NS_ERROR_NULL_POINTER;
}
//*****************************************************************************
// nsDocShellTreeOwner::nsIWebProgressListener
//*****************************************************************************
NS_IMETHODIMP
nsDocShellTreeOwner::OnProgressChange(nsIWebProgress* aProgress,
nsIRequest* aRequest,
int32_t aCurSelfProgress,
int32_t aMaxSelfProgress,
int32_t aCurTotalProgress,
int32_t aMaxTotalProgress) {
// In the absence of DOM document creation event, this method is the
// most convenient place to install the mouse listener on the
// DOM document.
return AddChromeListeners();
}
NS_IMETHODIMP
nsDocShellTreeOwner::OnStateChange(nsIWebProgress* aProgress,
nsIRequest* aRequest,
uint32_t aProgressStateFlags,
nsresult aStatus) {
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::OnLocationChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest, nsIURI* aURI,
uint32_t aFlags) {
if (mChromeTooltipListener && aWebProgress &&
!(aFlags & nsIWebProgressListener::LOCATION_CHANGE_SAME_DOCUMENT) &&
mChromeTooltipListener->WebProgressShowedTooltip(aWebProgress)) {
mChromeTooltipListener->HideTooltip();
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::OnStatusChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest, nsresult aStatus,
const char16_t* aMessage) {
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::OnSecurityChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest, uint32_t aState) {
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::OnContentBlockingEvent(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
uint32_t aEvent) {
return NS_OK;
}
//*****************************************************************************
// nsDocShellTreeOwner: Accessors
//*****************************************************************************
void nsDocShellTreeOwner::WebBrowser(nsWebBrowser* aWebBrowser) {
if (!aWebBrowser) {
RemoveChromeListeners();
}
if (aWebBrowser != mWebBrowser) {
mPrompter = nullptr;
mAuthPrompter = nullptr;
}
mWebBrowser = aWebBrowser;
if (mContentTreeOwner) {
mContentTreeOwner->WebBrowser(aWebBrowser);
if (!aWebBrowser) {
mContentTreeOwner = nullptr;
}
}
}
nsWebBrowser* nsDocShellTreeOwner::WebBrowser() { return mWebBrowser; }
NS_IMETHODIMP
nsDocShellTreeOwner::SetTreeOwner(nsIDocShellTreeOwner* aTreeOwner) {
if (aTreeOwner) {
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome(do_GetInterface(aTreeOwner));
NS_ENSURE_TRUE(webBrowserChrome, NS_ERROR_INVALID_ARG);
NS_ENSURE_SUCCESS(SetWebBrowserChrome(webBrowserChrome),
NS_ERROR_INVALID_ARG);
mTreeOwner = aTreeOwner;
} else {
mTreeOwner = nullptr;
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome();
if (!webBrowserChrome) {
NS_ENSURE_SUCCESS(SetWebBrowserChrome(nullptr), NS_ERROR_FAILURE);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetWebBrowserChrome(
nsIWebBrowserChrome* aWebBrowserChrome) {
if (!aWebBrowserChrome) {
mWebBrowserChrome = nullptr;
mOwnerWin = nullptr;
mOwnerRequestor = nullptr;
mWebBrowserChromeWeak = nullptr;
} else {
nsCOMPtr<nsISupportsWeakReference> supportsweak =
do_QueryInterface(aWebBrowserChrome);
if (supportsweak) {
supportsweak->GetWeakReference(getter_AddRefs(mWebBrowserChromeWeak));
} else {
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin(
do_QueryInterface(aWebBrowserChrome));
nsCOMPtr<nsIInterfaceRequestor> requestor(
do_QueryInterface(aWebBrowserChrome));
// it's ok for ownerWin or requestor to be null.
mWebBrowserChrome = aWebBrowserChrome;
mOwnerWin = ownerWin;
mOwnerRequestor = requestor;
}
}
if (mContentTreeOwner) {
mContentTreeOwner->SetWebBrowserChrome(aWebBrowserChrome);
}
return NS_OK;
}
// Hook up things to the chrome like context menus and tooltips, if the chrome
// has implemented the right interfaces.
NS_IMETHODIMP
nsDocShellTreeOwner::AddChromeListeners() {
nsresult rv = NS_OK;
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome();
if (!webBrowserChrome) {
return NS_ERROR_FAILURE;
}
// install tooltips
if (!mChromeTooltipListener) {
nsCOMPtr<nsITooltipListener> tooltipListener(
do_QueryInterface(webBrowserChrome));
if (tooltipListener) {
mChromeTooltipListener =
new ChromeTooltipListener(mWebBrowser, webBrowserChrome);
rv = mChromeTooltipListener->AddChromeListeners();
}
}
// register dragover and drop event listeners with the listener manager
nsCOMPtr<EventTarget> target;
GetDOMEventTarget(mWebBrowser, getter_AddRefs(target));
EventListenerManager* elmP = target->GetOrCreateListenerManager();
if (elmP) {
elmP->AddEventListenerByType(this, NS_LITERAL_STRING("dragover"),
TrustedEventsAtSystemGroupBubble());
elmP->AddEventListenerByType(this, NS_LITERAL_STRING("drop"),
TrustedEventsAtSystemGroupBubble());
}
return rv;
}
NS_IMETHODIMP
nsDocShellTreeOwner::RemoveChromeListeners() {
if (mChromeTooltipListener) {
mChromeTooltipListener->RemoveChromeListeners();
mChromeTooltipListener = nullptr;
}
nsCOMPtr<EventTarget> piTarget;
GetDOMEventTarget(mWebBrowser, getter_AddRefs(piTarget));
if (!piTarget) {
return NS_OK;
}
EventListenerManager* elmP = piTarget->GetOrCreateListenerManager();
if (elmP) {
elmP->RemoveEventListenerByType(this, NS_LITERAL_STRING("dragover"),
TrustedEventsAtSystemGroupBubble());
elmP->RemoveEventListenerByType(this, NS_LITERAL_STRING("drop"),
TrustedEventsAtSystemGroupBubble());
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::HandleEvent(Event* aEvent) {
DragEvent* dragEvent = aEvent ? aEvent->AsDragEvent() : nullptr;
if (NS_WARN_IF(!dragEvent)) {
return NS_ERROR_INVALID_ARG;
}
if (dragEvent->DefaultPrevented()) {
return NS_OK;
}
nsCOMPtr<nsIDroppedLinkHandler> handler =
do_GetService("@mozilla.org/content/dropped-link-handler;1");
if (!handler) {
return NS_OK;
}
nsAutoString eventType;
aEvent->GetType(eventType);
if (eventType.EqualsLiteral("dragover")) {
bool canDropLink = false;
handler->CanDropLink(dragEvent, false, &canDropLink);
if (canDropLink) {
aEvent->PreventDefault();
}
} else if (eventType.EqualsLiteral("drop")) {
nsIWebNavigation* webnav = static_cast<nsIWebNavigation*>(mWebBrowser);
nsTArray<RefPtr<nsIDroppedLinkItem>> links;
if (webnav && NS_SUCCEEDED(handler->DropLinks(dragEvent, true, links))) {
if (links.Length() >= 1) {
nsCOMPtr<nsIPrincipal> triggeringPrincipal;
handler->GetTriggeringPrincipal(dragEvent,
getter_AddRefs(triggeringPrincipal));
if (triggeringPrincipal) {
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome =
GetWebBrowserChrome();
if (webBrowserChrome) {
nsCOMPtr<nsIBrowserChild> browserChild =
do_QueryInterface(webBrowserChrome);
if (browserChild) {
nsresult rv = browserChild->RemoteDropLinks(links);
return rv;
}
}
nsAutoString url;
if (NS_SUCCEEDED(links[0]->GetUrl(url))) {
if (!url.IsEmpty()) {
#ifndef ANDROID
MOZ_ASSERT(triggeringPrincipal,
"nsDocShellTreeOwner::HandleEvent: Need a valid "
"triggeringPrincipal");
#endif
LoadURIOptions loadURIOptions;
loadURIOptions.mTriggeringPrincipal = triggeringPrincipal;
nsCOMPtr<nsIContentSecurityPolicy> csp;
handler->GetCSP(dragEvent, getter_AddRefs(csp));
loadURIOptions.mCsp = csp;
webnav->LoadURI(url, loadURIOptions);
}
}
}
}
} else {
aEvent->StopPropagation();
aEvent->PreventDefault();
}
}
return NS_OK;
}
already_AddRefed<nsIWebBrowserChrome>
nsDocShellTreeOwner::GetWebBrowserChrome() {
nsCOMPtr<nsIWebBrowserChrome> chrome;
if (mWebBrowserChromeWeak) {
chrome = do_QueryReferent(mWebBrowserChromeWeak);
} else if (mWebBrowserChrome) {
chrome = mWebBrowserChrome;
}
return chrome.forget();
}
already_AddRefed<nsIEmbeddingSiteWindow> nsDocShellTreeOwner::GetOwnerWin() {
nsCOMPtr<nsIEmbeddingSiteWindow> win;
if (mWebBrowserChromeWeak) {
win = do_QueryReferent(mWebBrowserChromeWeak);
} else if (mOwnerWin) {
win = mOwnerWin;
}
return win.forget();
}
already_AddRefed<nsIInterfaceRequestor>
nsDocShellTreeOwner::GetOwnerRequestor() {
nsCOMPtr<nsIInterfaceRequestor> req;
if (mWebBrowserChromeWeak) {
req = do_QueryReferent(mWebBrowserChromeWeak);
} else if (mOwnerRequestor) {
req = mOwnerRequestor;
}
return req.forget();
}
NS_IMPL_ISUPPORTS(ChromeTooltipListener, nsIDOMEventListener)
ChromeTooltipListener::ChromeTooltipListener(nsWebBrowser* aInBrowser,
nsIWebBrowserChrome* aInChrome)
: mWebBrowser(aInBrowser),
mWebBrowserChrome(aInChrome),
mTooltipListenerInstalled(false),
mMouseClientX(0),
mMouseClientY(0),
mMouseScreenX(0),
mMouseScreenY(0),
mShowingTooltip(false),
mTooltipShownOnce(false) {}
ChromeTooltipListener::~ChromeTooltipListener() {}
nsITooltipTextProvider* ChromeTooltipListener::GetTooltipTextProvider() {
if (!mTooltipTextProvider) {
mTooltipTextProvider = do_GetService(NS_TOOLTIPTEXTPROVIDER_CONTRACTID);
}
if (!mTooltipTextProvider) {
mTooltipTextProvider =
do_GetService(NS_DEFAULTTOOLTIPTEXTPROVIDER_CONTRACTID);
}
return mTooltipTextProvider;
}
// Hook up things to the chrome like context menus and tooltips, if the chrome
// has implemented the right interfaces.
NS_IMETHODIMP
ChromeTooltipListener::AddChromeListeners() {
if (!mEventTarget) {
GetDOMEventTarget(mWebBrowser, getter_AddRefs(mEventTarget));
}
// Register the appropriate events for tooltips, but only if
// the embedding chrome cares.
nsresult rv = NS_OK;
nsCOMPtr<nsITooltipListener> tooltipListener(
do_QueryInterface(mWebBrowserChrome));
if (tooltipListener && !mTooltipListenerInstalled) {
rv = AddTooltipListener();
if (NS_FAILED(rv)) {
return rv;
}
}
return rv;
}
// Subscribe to the events that will allow us to track tooltips. We need "mouse"
// for mouseExit, "mouse motion" for mouseMove, and "key" for keyDown. As we
// add the listeners, keep track of how many succeed so we can clean up
// correctly in Release().
NS_IMETHODIMP
ChromeTooltipListener::AddTooltipListener() {
if (mEventTarget) {
nsresult rv = NS_OK;
#ifndef XP_WIN
rv = mEventTarget->AddSystemEventListener(NS_LITERAL_STRING("keydown"),
this, false, false);
NS_ENSURE_SUCCESS(rv, rv);
#endif
rv = mEventTarget->AddSystemEventListener(NS_LITERAL_STRING("mousedown"),
this, false, false);
NS_ENSURE_SUCCESS(rv, rv);
rv = mEventTarget->AddSystemEventListener(NS_LITERAL_STRING("mouseout"),
this, false, false);
NS_ENSURE_SUCCESS(rv, rv);
rv = mEventTarget->AddSystemEventListener(NS_LITERAL_STRING("mousemove"),
this, false, false);
NS_ENSURE_SUCCESS(rv, rv);
mTooltipListenerInstalled = true;
}
return NS_OK;
}
// Unsubscribe from the various things we've hooked up to the window root.
NS_IMETHODIMP
ChromeTooltipListener::RemoveChromeListeners() {
HideTooltip();
if (mTooltipListenerInstalled) {
RemoveTooltipListener();
}
mEventTarget = nullptr;
// it really doesn't matter if these fail...
return NS_OK;
}
// Unsubscribe from all the various tooltip events that we were listening to.
NS_IMETHODIMP
ChromeTooltipListener::RemoveTooltipListener() {
if (mEventTarget) {
#ifndef XP_WIN
mEventTarget->RemoveSystemEventListener(NS_LITERAL_STRING("keydown"), this,
false);
#endif
mEventTarget->RemoveSystemEventListener(NS_LITERAL_STRING("mousedown"),
this, false);
mEventTarget->RemoveSystemEventListener(NS_LITERAL_STRING("mouseout"), this,
false);
mEventTarget->RemoveSystemEventListener(NS_LITERAL_STRING("mousemove"),
this, false);
mTooltipListenerInstalled = false;
}
return NS_OK;
}
NS_IMETHODIMP
ChromeTooltipListener::HandleEvent(Event* aEvent) {
nsAutoString eventType;
aEvent->GetType(eventType);
if (eventType.EqualsLiteral("mousedown")) {
return HideTooltip();
} else if (eventType.EqualsLiteral("keydown")) {
WidgetKeyboardEvent* keyEvent = aEvent->WidgetEventPtr()->AsKeyboardEvent();
if (!keyEvent->IsModifierKeyEvent()) {
return HideTooltip();
}
return NS_OK;
} else if (eventType.EqualsLiteral("mouseout")) {
// Reset flag so that tooltip will display on the next MouseMove
mTooltipShownOnce = false;
return HideTooltip();
} else if (eventType.EqualsLiteral("mousemove")) {
return MouseMove(aEvent);
}
NS_ERROR("Unexpected event type");
return NS_OK;
}
// If we're a tooltip, fire off a timer to see if a tooltip should be shown. If
// the timer fires, we cache the node in |mPossibleTooltipNode|.
nsresult ChromeTooltipListener::MouseMove(Event* aMouseEvent) {
MouseEvent* mouseEvent = aMouseEvent->AsMouseEvent();
if (!mouseEvent) {
return NS_OK;
}
// stash the coordinates of the event so that we can still get back to it from
// within the timer callback. On win32, we'll get a MouseMove event even when
// a popup goes away -- even when the mouse doesn't change position! To get
// around this, we make sure the mouse has really moved before proceeding.
int32_t newMouseX = mouseEvent->ClientX();
int32_t newMouseY = mouseEvent->ClientY();
if (mMouseClientX == newMouseX && mMouseClientY == newMouseY) {
return NS_OK;
}
// Filter out minor mouse movements.
if (mShowingTooltip &&
(abs(mMouseClientX - newMouseX) <= kTooltipMouseMoveTolerance) &&
(abs(mMouseClientY - newMouseY) <= kTooltipMouseMoveTolerance)) {
return NS_OK;
}
mMouseClientX = newMouseX;
mMouseClientY = newMouseY;
mMouseScreenX = mouseEvent->ScreenX(CallerType::System);
mMouseScreenY = mouseEvent->ScreenY(CallerType::System);
if (mTooltipTimer) {
mTooltipTimer->Cancel();
mTooltipTimer = nullptr;
}
if (!mShowingTooltip) {
nsIEventTarget* target = nullptr;
if (nsCOMPtr<EventTarget> eventTarget = aMouseEvent->GetComposedTarget()) {
mPossibleTooltipNode = do_QueryInterface(eventTarget);
nsCOMPtr<nsIGlobalObject> global(eventTarget->GetOwnerGlobal());
if (global) {
target = global->EventTargetFor(TaskCategory::UI);
}
}
if (mPossibleTooltipNode) {
nsresult rv = NS_NewTimerWithFuncCallback(
getter_AddRefs(mTooltipTimer), sTooltipCallback, this,
LookAndFeel::GetInt(LookAndFeel::eIntID_TooltipDelay, 500),
nsITimer::TYPE_ONE_SHOT, "ChromeTooltipListener::MouseMove", target);
if (NS_FAILED(rv)) {
mPossibleTooltipNode = nullptr;
NS_WARNING("Could not create a timer for tooltip tracking");
}
}
} else {
mTooltipShownOnce = true;
return HideTooltip();
}
return NS_OK;
}
// Tell the registered chrome that they should show the tooltip.
NS_IMETHODIMP
ChromeTooltipListener::ShowTooltip(int32_t aInXCoords, int32_t aInYCoords,
const nsAString& aInTipText,
const nsAString& aTipDir) {
nsresult rv = NS_OK;
// do the work to call the client
nsCOMPtr<nsITooltipListener> tooltipListener(
do_QueryInterface(mWebBrowserChrome));
if (tooltipListener) {
rv = tooltipListener->OnShowTooltip(aInXCoords, aInYCoords, aInTipText,
aTipDir);
if (NS_SUCCEEDED(rv)) {
mShowingTooltip = true;
}
}
return rv;
}
// Tell the registered chrome that they should rollup the tooltip
// NOTE: This routine is safe to call even if the popup is already closed.
NS_IMETHODIMP
ChromeTooltipListener::HideTooltip() {
nsresult rv = NS_OK;
// shut down the relevant timers
if (mTooltipTimer) {
mTooltipTimer->Cancel();
mTooltipTimer = nullptr;
// release tooltip target
mPossibleTooltipNode = nullptr;
mLastDocshell = nullptr;
}
// if we're showing the tip, tell the chrome to hide it
if (mShowingTooltip) {
nsCOMPtr<nsITooltipListener> tooltipListener(
do_QueryInterface(mWebBrowserChrome));
if (tooltipListener) {
rv = tooltipListener->OnHideTooltip();
if (NS_SUCCEEDED(rv)) {
mShowingTooltip = false;
}
}
}
return rv;
}
bool ChromeTooltipListener::WebProgressShowedTooltip(
nsIWebProgress* aWebProgress) {
nsCOMPtr<nsIDocShell> docshell = do_QueryInterface(aWebProgress);
nsCOMPtr<nsIDocShell> lastUsed = do_QueryReferent(mLastDocshell);
while (lastUsed) {
if (lastUsed == docshell) {
return true;
}
// We can't use the docshell hierarchy here, because when the parent
// docshell is navigated, the child docshell is disconnected (ie its
// references to the parent are nulled out) despite it still being
// alive here. So we use the document hierarchy instead:
Document* document = lastUsed->GetDocument();
if (document) {
document = document->GetInProcessParentDocument();
}
if (!document) {
break;
}
lastUsed = document->GetDocShell();
}
return false;
}
// A timer callback, fired when the mouse has hovered inside of a frame for the
// appropriate amount of time. Getting to this point means that we should show
// the tooltip, but only after we determine there is an appropriate TITLE
// element.
//
// This relies on certain things being cached into the |aChromeTooltipListener|
// object passed to us by the timer:
// -- the x/y coordinates of the mouse (mMouseClientY, mMouseClientX)
// -- the dom node the user hovered over (mPossibleTooltipNode)
void ChromeTooltipListener::sTooltipCallback(nsITimer* aTimer,
void* aChromeTooltipListener) {
auto self = static_cast<ChromeTooltipListener*>(aChromeTooltipListener);
if (self && self->mPossibleTooltipNode) {
if (!self->mPossibleTooltipNode->IsInComposedDoc()) {
// release tooltip target if there is one, NO MATTER WHAT
self->mPossibleTooltipNode = nullptr;
return;
}
// The actual coordinates we want to put the tooltip at are relative to the
// toplevel docshell of our mWebBrowser. We know what the screen
// coordinates of the mouse event were, which means we just need the screen
// coordinates of the docshell. Unfortunately, there is no good way to
// find those short of groveling for the presentation in that docshell and
// finding the screen coords of its toplevel widget...
nsCOMPtr<nsIDocShell> docShell =
do_GetInterface(static_cast<nsIWebBrowser*>(self->mWebBrowser));
RefPtr<PresShell> presShell = docShell ? docShell->GetPresShell() : nullptr;
nsIWidget* widget = nullptr;
if (presShell) {
nsViewManager* vm = presShell->GetViewManager();
if (vm) {
nsView* view = vm->GetRootView();
if (view) {
nsPoint offset;
widget = view->GetNearestWidget(&offset);
}
}
}
if (!widget || !docShell || !docShell->GetIsActive()) {
// release tooltip target if there is one, NO MATTER WHAT
self->mPossibleTooltipNode = nullptr;
return;
}
// if there is text associated with the node, show the tip and fire
// off a timer to auto-hide it.
nsITooltipTextProvider* tooltipProvider = self->GetTooltipTextProvider();
if (tooltipProvider) {
nsString tooltipText;
nsString directionText;
bool textFound = false;
tooltipProvider->GetNodeText(self->mPossibleTooltipNode,
getter_Copies(tooltipText),
getter_Copies(directionText), &textFound);
if (textFound && (!self->mTooltipShownOnce ||
tooltipText != self->mLastShownTooltipText)) {
LayoutDeviceIntPoint screenDot = widget->WidgetToScreenOffset();
double scaleFactor = 1.0;
if (presShell->GetPresContext()) {
nsDeviceContext* dc = presShell->GetPresContext()->DeviceContext();
scaleFactor = double(AppUnitsPerCSSPixel()) /
dc->AppUnitsPerDevPixelAtUnitFullZoom();
}
// ShowTooltip expects widget-relative position.
self->ShowTooltip(self->mMouseScreenX - screenDot.x / scaleFactor,
self->mMouseScreenY - screenDot.y / scaleFactor,
tooltipText, directionText);
self->mLastShownTooltipText = std::move(tooltipText);
self->mLastDocshell = do_GetWeakReference(
self->mPossibleTooltipNode->OwnerDoc()->GetDocShell());
}
}
// release tooltip target if there is one, NO MATTER WHAT
self->mPossibleTooltipNode = nullptr;
}
}
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