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
createInstance()39 PassRefPtr<WebDragSource> WebDragSource::createInstance()
40 {
41 return adoptRef(new WebDragSource);
42 }
43
WebDragSource()44 WebDragSource::WebDragSource()
45 {
46 }
47
QueryInterface(REFIID riid,void ** ppvObject)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
AddRef(void)61 ULONG WebDragSource::AddRef(void)
62 {
63 ref();
64 return refCount();
65 }
66
Release(void)67 ULONG WebDragSource::Release(void)
68 {
69 deref();
70 return refCount();
71 }
72
QueryContinueDrag(BOOL fEscapePressed,DWORD grfState)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
GiveFeedback(DWORD dwEffect)84 HRESULT WebDragSource::GiveFeedback(DWORD dwEffect)
85 {
86 return DRAGDROP_S_USEDEFAULTCURSORS;
87 }
88