PasteboardWin.cpp revision cad810f21b803229eb11403f9209855525a25d57 
1/*
2 * Copyright (C) 2006, 2007 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 "Pasteboard.h"
28
29#include "BitmapInfo.h"
30#include "ClipboardUtilitiesWin.h"
31#include "Document.h"
32#include "DocumentFragment.h"
33#include "Element.h"
34#include "Frame.h"
35#include "HitTestResult.h"
36#include "Image.h"
37#include "KURL.h"
38#include "Page.h"
39#include "Range.h"
40#include "RenderImage.h"
41#include "TextEncoding.h"
42#include "WebCoreInstanceHandle.h"
43#include "markup.h"
44#include <wtf/text/CString.h>
45
46namespace WebCore {
47
48static UINT HTMLClipboardFormat = 0;
49static UINT BookmarkClipboardFormat = 0;
50static UINT WebSmartPasteFormat = 0;
51
52static LRESULT CALLBACK PasteboardOwnerWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
53{
54    LRESULT lresult = 0;
55
56    switch (message) {
57    case WM_RENDERFORMAT:
58        // This message comes when SetClipboardData was sent a null data handle
59        // and now it's come time to put the data on the clipboard.
60        break;
61    case WM_RENDERALLFORMATS:
62        // This message comes when SetClipboardData was sent a null data handle
63        // and now this application is about to quit, so it must put data on
64        // the clipboard before it exits.
65        break;
66    case WM_DESTROY:
67        break;
68#if !OS(WINCE)
69    case WM_DRAWCLIPBOARD:
70        break;
71    case WM_CHANGECBCHAIN:
72        break;
73#endif
74    default:
75        lresult = DefWindowProc(hWnd, message, wParam, lParam);
76        break;
77    }
78    return lresult;
79}
80
81Pasteboard* Pasteboard::generalPasteboard()
82{
83    static Pasteboard* pasteboard = new Pasteboard;
84    return pasteboard;
85}
86
87Pasteboard::Pasteboard()
88{
89    HWND hWndParent = 0;
90#if !OS(WINCE)
91    hWndParent = HWND_MESSAGE;
92#endif
93
94    WNDCLASS wc;
95    memset(&wc, 0, sizeof(WNDCLASS));
96    wc.lpfnWndProc    = PasteboardOwnerWndProc;
97    wc.hInstance      = WebCore::instanceHandle();
98    wc.lpszClassName  = L"PasteboardOwnerWindowClass";
99    RegisterClass(&wc);
100
101    m_owner = ::CreateWindow(L"PasteboardOwnerWindowClass", L"PasteboardOwnerWindow", 0, 0, 0, 0, 0,
102        hWndParent, 0, 0, 0);
103
104    HTMLClipboardFormat = ::RegisterClipboardFormat(L"HTML Format");
105    BookmarkClipboardFormat = ::RegisterClipboardFormat(L"UniformResourceLocatorW");
106    WebSmartPasteFormat = ::RegisterClipboardFormat(L"WebKit Smart Paste Format");
107}
108
109void Pasteboard::clear()
110{
111    if (::OpenClipboard(m_owner)) {
112        ::EmptyClipboard();
113        ::CloseClipboard();
114    }
115}
116
117void Pasteboard::writeSelection(Range* selectedRange, bool canSmartCopyOrDelete, Frame* frame)
118{
119    clear();
120
121    // Put CF_HTML format on the pasteboard
122    if (::OpenClipboard(m_owner)) {
123        ExceptionCode ec = 0;
124        Vector<char> data;
125        markupToCFHTML(createMarkup(selectedRange, 0, AnnotateForInterchange),
126            selectedRange->startContainer(ec)->document()->url().string(), data);
127        HGLOBAL cbData = createGlobalData(data);
128        if (!::SetClipboardData(HTMLClipboardFormat, cbData))
129            ::GlobalFree(cbData);
130        ::CloseClipboard();
131    }
132
133    // Put plain string on the pasteboard. CF_UNICODETEXT covers CF_TEXT as well
134    String str = frame->editor()->selectedText();
135    replaceNewlinesWithWindowsStyleNewlines(str);
136    replaceNBSPWithSpace(str);
137    if (::OpenClipboard(m_owner)) {
138        HGLOBAL cbData = createGlobalData(str);
139        if (!::SetClipboardData(CF_UNICODETEXT, cbData))
140            ::GlobalFree(cbData);
141        ::CloseClipboard();
142    }
143
144    // enable smart-replacing later on by putting dummy data on the pasteboard
145    if (canSmartCopyOrDelete) {
146        if (::OpenClipboard(m_owner)) {
147            ::SetClipboardData(WebSmartPasteFormat, 0);
148            ::CloseClipboard();
149        }
150
151    }
152}
153
154void Pasteboard::writePlainText(const String& text)
155{
156    clear();
157
158    // Put plain string on the pasteboard. CF_UNICODETEXT covers CF_TEXT as well
159    String str = text;
160    replaceNewlinesWithWindowsStyleNewlines(str);
161    if (::OpenClipboard(m_owner)) {
162        HGLOBAL cbData = createGlobalData(str);
163        if (!::SetClipboardData(CF_UNICODETEXT, cbData))
164            ::GlobalFree(cbData);
165        ::CloseClipboard();
166    }
167}
168
169void Pasteboard::writeURL(const KURL& url, const String& titleStr, Frame* frame)
170{
171    ASSERT(!url.isEmpty());
172
173    clear();
174
175    String title(titleStr);
176    if (title.isEmpty()) {
177        title = url.lastPathComponent();
178        if (title.isEmpty())
179            title = url.host();
180    }
181
182    // write to clipboard in format com.apple.safari.bookmarkdata to be able to paste into the bookmarks view with appropriate title
183    if (::OpenClipboard(m_owner)) {
184        HGLOBAL cbData = createGlobalData(url, title);
185        if (!::SetClipboardData(BookmarkClipboardFormat, cbData))
186            ::GlobalFree(cbData);
187        ::CloseClipboard();
188    }
189
190    // write to clipboard in format CF_HTML to be able to paste into contenteditable areas as a link
191    if (::OpenClipboard(m_owner)) {
192        Vector<char> data;
193        markupToCFHTML(urlToMarkup(url, title), "", data);
194        HGLOBAL cbData = createGlobalData(data);
195        if (!::SetClipboardData(HTMLClipboardFormat, cbData))
196            ::GlobalFree(cbData);
197        ::CloseClipboard();
198    }
199
200    // bare-bones CF_UNICODETEXT support
201    if (::OpenClipboard(m_owner)) {
202        HGLOBAL cbData = createGlobalData(url.string());
203        if (!::SetClipboardData(CF_UNICODETEXT, cbData))
204            ::GlobalFree(cbData);
205        ::CloseClipboard();
206    }
207}
208
209void Pasteboard::writeImage(Node* node, const KURL&, const String&)
210{
211    ASSERT(node && node->renderer() && node->renderer()->isImage());
212    RenderImage* renderer = toRenderImage(node->renderer());
213    CachedImage* cachedImage = renderer->cachedImage();
214    if (!cachedImage || cachedImage->errorOccurred())
215        return;
216    Image* image = cachedImage->image();
217    ASSERT(image);
218
219    clear();
220
221    HDC dc = GetDC(0);
222    HDC compatibleDC = CreateCompatibleDC(0);
223    HDC sourceDC = CreateCompatibleDC(0);
224    OwnPtr<HBITMAP> resultBitmap(CreateCompatibleBitmap(dc, image->width(), image->height()));
225    HGDIOBJ oldBitmap = SelectObject(compatibleDC, resultBitmap.get());
226
227    BitmapInfo bmInfo = BitmapInfo::create(image->size());
228
229    HBITMAP coreBitmap = CreateDIBSection(dc, &bmInfo, DIB_RGB_COLORS, 0, 0, 0);
230    HGDIOBJ oldSource = SelectObject(sourceDC, coreBitmap);
231    image->getHBITMAP(coreBitmap);
232
233    BitBlt(compatibleDC, 0, 0, image->width(), image->height(), sourceDC, 0, 0, SRCCOPY);
234
235    SelectObject(sourceDC, oldSource);
236    DeleteObject(coreBitmap);
237
238    SelectObject(compatibleDC, oldBitmap);
239    DeleteDC(sourceDC);
240    DeleteDC(compatibleDC);
241    ReleaseDC(0, dc);
242
243    if (::OpenClipboard(m_owner)) {
244        ::SetClipboardData(CF_BITMAP, resultBitmap.leakPtr());
245        ::CloseClipboard();
246    }
247}
248
249bool Pasteboard::canSmartReplace()
250{
251    return ::IsClipboardFormatAvailable(WebSmartPasteFormat);
252}
253
254String Pasteboard::plainText(Frame* frame)
255{
256    if (::IsClipboardFormatAvailable(CF_UNICODETEXT) && ::OpenClipboard(m_owner)) {
257        HANDLE cbData = ::GetClipboardData(CF_UNICODETEXT);
258        if (cbData) {
259            UChar* buffer = static_cast<UChar*>(GlobalLock(cbData));
260            String fromClipboard(buffer);
261            GlobalUnlock(cbData);
262            ::CloseClipboard();
263            return fromClipboard;
264        }
265        ::CloseClipboard();
266    }
267
268    if (::IsClipboardFormatAvailable(CF_TEXT) && ::OpenClipboard(m_owner)) {
269        HANDLE cbData = ::GetClipboardData(CF_TEXT);
270        if (cbData) {
271            char* buffer = static_cast<char*>(GlobalLock(cbData));
272            String fromClipboard(buffer);
273            GlobalUnlock(cbData);
274            ::CloseClipboard();
275            return fromClipboard;
276        }
277        ::CloseClipboard();
278    }
279
280    return String();
281}
282
283PassRefPtr<DocumentFragment> Pasteboard::documentFragment(Frame* frame, PassRefPtr<Range> context, bool allowPlainText, bool& chosePlainText)
284{
285    chosePlainText = false;
286
287    if (::IsClipboardFormatAvailable(HTMLClipboardFormat) && ::OpenClipboard(m_owner)) {
288        // get data off of clipboard
289        HANDLE cbData = ::GetClipboardData(HTMLClipboardFormat);
290        if (cbData) {
291            SIZE_T dataSize = ::GlobalSize(cbData);
292            String cfhtml(UTF8Encoding().decode(static_cast<char*>(GlobalLock(cbData)), dataSize));
293            GlobalUnlock(cbData);
294            ::CloseClipboard();
295
296            PassRefPtr<DocumentFragment> fragment = fragmentFromCFHTML(frame->document(), cfhtml);
297            if (fragment)
298                return fragment;
299        } else
300            ::CloseClipboard();
301    }
302
303    if (allowPlainText && ::IsClipboardFormatAvailable(CF_UNICODETEXT)) {
304        chosePlainText = true;
305        if (::OpenClipboard(m_owner)) {
306            HANDLE cbData = ::GetClipboardData(CF_UNICODETEXT);
307            if (cbData) {
308                UChar* buffer = static_cast<UChar*>(GlobalLock(cbData));
309                String str(buffer);
310                GlobalUnlock(cbData);
311                ::CloseClipboard();
312                RefPtr<DocumentFragment> fragment = createFragmentFromText(context.get(), str);
313                if (fragment)
314                    return fragment.release();
315            } else
316                ::CloseClipboard();
317        }
318    }
319
320    if (allowPlainText && ::IsClipboardFormatAvailable(CF_TEXT)) {
321        chosePlainText = true;
322        if (::OpenClipboard(m_owner)) {
323            HANDLE cbData = ::GetClipboardData(CF_TEXT);
324            if (cbData) {
325                char* buffer = static_cast<char*>(GlobalLock(cbData));
326                String str(buffer);
327                GlobalUnlock(cbData);
328                ::CloseClipboard();
329                RefPtr<DocumentFragment> fragment = createFragmentFromText(context.get(), str);
330                if (fragment)
331                    return fragment.release();
332            } else
333                ::CloseClipboard();
334        }
335    }
336
337    return 0;
338}
339
340} // namespace WebCore
341