c7f4b627c4
Patch from Gaetano Mendola <mendola@gmail.com> Original review: http://codereview.chromium.org/4273 I added some additions on my part and two unit test fix due to the added DCHECK. Reduced atl header inclusion. Review URL: http://codereview.chromium.org/5009 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@2730 0039d316-1c4b-4281-b951-d872f2087c98
61 lines
1.5 KiB
C++
61 lines
1.5 KiB
C++
// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/base_drag_source.h"
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///////////////////////////////////////////////////////////////////////////////
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// BaseDragSource, public:
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BaseDragSource::BaseDragSource() : ref_count_(0) {
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}
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///////////////////////////////////////////////////////////////////////////////
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// BaseDragSource, IDropSource implementation:
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HRESULT BaseDragSource::QueryContinueDrag(BOOL escape_pressed,
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DWORD key_state) {
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if (escape_pressed) {
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OnDragSourceCancel();
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return DRAGDROP_S_CANCEL;
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}
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if (!(key_state & MK_LBUTTON)) {
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OnDragSourceDrop();
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return DRAGDROP_S_DROP;
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}
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OnDragSourceMove();
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return S_OK;
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}
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HRESULT BaseDragSource::GiveFeedback(DWORD effect) {
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return DRAGDROP_S_USEDEFAULTCURSORS;
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}
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///////////////////////////////////////////////////////////////////////////////
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// BaseDragSource, IUnknown implementation:
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HRESULT BaseDragSource::QueryInterface(const IID& iid, void** object) {
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*object = NULL;
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if (IsEqualIID(iid, IID_IUnknown) || IsEqualIID(iid, IID_IDropSource)) {
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*object = this;
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} else {
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return E_NOINTERFACE;
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}
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AddRef();
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return S_OK;
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}
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ULONG BaseDragSource::AddRef() {
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return ++ref_count_;
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}
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ULONG BaseDragSource::Release() {
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if (--ref_count_ == 0) {
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delete this;
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return 0U;
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}
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return ref_count_;
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}
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