forked from mirrors/gecko-dev
8e06a7a853
Backed out changeset 9de3ed24d3a0 (bug 1825336) Backed out changeset aef787728f19 (bug 1825335) Backed out changeset a04c341244c1 (bug 1825333) Backed out changeset e3ad15f762ba (bug 1825332) Backed out changeset eed23da92a27 (bug 1825331) Backed out changeset 8213bb54376e (bug 1825330) Backed out changeset 747ec5ac4994 (bug 1825329) Backed out changeset e91ff431f92d (bug 1825328) Backed out changeset 59c18d13768b (bug 1825327) Backed out changeset 538096d99e49 (bug 1825325) Backed out changeset c76eb9d9b095 (bug 1825324) Backed out changeset 8b81410eb686 (bug 1824557)
97 lines
2.3 KiB
C++
97 lines
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 "nsNativeDragSource.h"
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#include <stdio.h>
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#include "nsISupportsImpl.h"
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#include "nsString.h"
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#include "nsToolkit.h"
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#include "nsWidgetsCID.h"
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#include "nsIDragService.h"
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#include "mozilla/dom/DataTransfer.h"
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/*
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* class nsNativeDragSource
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*/
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nsNativeDragSource::nsNativeDragSource(
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mozilla::dom::DataTransfer* aDataTransfer)
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: m_cRef(0), m_hCursor(nullptr), mUserCancelled(false) {
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mDataTransfer = aDataTransfer;
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}
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nsNativeDragSource::~nsNativeDragSource() {}
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STDMETHODIMP
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nsNativeDragSource::QueryInterface(REFIID riid, void** ppv) {
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*ppv = nullptr;
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if (IID_IUnknown == riid || IID_IDropSource == riid) *ppv = this;
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if (nullptr != *ppv) {
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((LPUNKNOWN)*ppv)->AddRef();
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return S_OK;
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}
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return E_NOINTERFACE;
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}
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STDMETHODIMP_(ULONG)
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nsNativeDragSource::AddRef(void) {
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++m_cRef;
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NS_LOG_ADDREF(this, m_cRef, "nsNativeDragSource", sizeof(*this));
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return m_cRef;
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}
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STDMETHODIMP_(ULONG)
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nsNativeDragSource::Release(void) {
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--m_cRef;
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NS_LOG_RELEASE(this, m_cRef, "nsNativeDragSource");
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if (0 != m_cRef) return m_cRef;
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delete this;
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return 0;
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}
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STDMETHODIMP
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nsNativeDragSource::QueryContinueDrag(BOOL fEsc, DWORD grfKeyState) {
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nsCOMPtr<nsIDragService> dragService =
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do_GetService("@mozilla.org/widget/dragservice;1");
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if (dragService) {
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DWORD pos = ::GetMessagePos();
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dragService->DragMoved(GET_X_LPARAM(pos), GET_Y_LPARAM(pos));
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}
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if (fEsc) {
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mUserCancelled = true;
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return DRAGDROP_S_CANCEL;
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}
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if (!(grfKeyState & MK_LBUTTON) || (grfKeyState & MK_RBUTTON))
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return DRAGDROP_S_DROP;
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return S_OK;
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}
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STDMETHODIMP
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nsNativeDragSource::GiveFeedback(DWORD dwEffect) {
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// For drags involving tabs, we do some custom work with cursors.
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if (mDataTransfer) {
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nsAutoString cursor;
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mDataTransfer->GetMozCursor(cursor);
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if (cursor.EqualsLiteral("default")) {
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m_hCursor = ::LoadCursor(0, IDC_ARROW);
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} else {
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m_hCursor = nullptr;
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}
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}
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if (m_hCursor) {
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::SetCursor(m_hCursor);
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return S_OK;
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}
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// Let the system choose which cursor to apply.
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return DRAGDROP_S_USEDEFAULTCURSORS;
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}
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