1 /* 2 * Copyright (C) 2011 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include "config.h" 27 #include "WebDragSource.h" 28 29 #include <WebCore/Cursor.h> 30 #include <WebCore/DragActions.h> 31 #include <WebCore/EventHandler.h> 32 #include <WebCore/Frame.h> 33 #include <WebCore/Page.h> 34 #include <WebCore/PlatformMouseEvent.h> 35 #include <wtf/CurrentTime.h> 36 37 using namespace WebCore; 38 39 PassRefPtr<WebDragSource> WebDragSource::createInstance() 40 { 41 return adoptRef(new WebDragSource); 42 } 43 44 WebDragSource::WebDragSource() 45 { 46 } 47 48 HRESULT WebDragSource::QueryInterface(REFIID riid, void** ppvObject) 49 { 50 *ppvObject = 0; 51 if (IsEqualIID(riid, IID_IUnknown) || IsEqualIID(riid, IID_IDropSource)) { 52 *ppvObject = this; 53 AddRef(); 54 55 return S_OK; 56 } 57 58 return E_NOINTERFACE; 59 } 60 61 ULONG WebDragSource::AddRef(void) 62 { 63 ref(); 64 return refCount(); 65 } 66 67 ULONG WebDragSource::Release(void) 68 { 69 deref(); 70 return refCount(); 71 } 72 73 HRESULT WebDragSource::QueryContinueDrag(BOOL fEscapePressed, DWORD grfState) 74 { 75 if (fEscapePressed) 76 return DRAGDROP_S_CANCEL; 77 78 if (grfState & (MK_LBUTTON | MK_RBUTTON)) 79 return S_OK; 80 81 return DRAGDROP_S_DROP; 82 } 83 84 HRESULT WebDragSource::GiveFeedback(DWORD dwEffect) 85 { 86 return DRAGDROP_S_USEDEFAULTCURSORS; 87 } 88