1/*
2 * Copyright (C) 2007 Apple Inc.  All rights reserved.
3 * Copyright (C) 2006, 2007 Apple Inc.  All rights reserved.
4 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
23 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include "config.h"
29#include "ClipboardQt.h"
30
31#include "CachedImage.h"
32#include "CSSHelper.h"
33#include "Document.h"
34#include "Element.h"
35#include "FileList.h"
36#include "Frame.h"
37#include "HTMLNames.h"
38#include "Image.h"
39#include "IntPoint.h"
40#include "KURL.h"
41#include "markup.h"
42#include "NotImplemented.h"
43#include "PlatformString.h"
44#include "Range.h"
45#include "RenderImage.h"
46#include "StringHash.h"
47
48#include <QList>
49#include <QMimeData>
50#include <QStringList>
51#include <QUrl>
52#include <QApplication>
53#include <QClipboard>
54#include <qdebug.h>
55
56#define methodDebug() qDebug("ClipboardQt: %s", __FUNCTION__)
57
58namespace WebCore {
59
60ClipboardQt::ClipboardQt(ClipboardAccessPolicy policy, const QMimeData* readableClipboard)
61    : Clipboard(policy, true)
62    , m_readableData(readableClipboard)
63    , m_writableData(0)
64{
65    Q_ASSERT(policy == ClipboardReadable || policy == ClipboardTypesReadable);
66}
67
68ClipboardQt::ClipboardQt(ClipboardAccessPolicy policy, bool forDragging)
69    : Clipboard(policy, forDragging)
70    , m_readableData(0)
71    , m_writableData(0)
72{
73    Q_ASSERT(policy == ClipboardReadable || policy == ClipboardWritable || policy == ClipboardNumb);
74
75#ifndef QT_NO_CLIPBOARD
76    if (policy != ClipboardWritable) {
77        Q_ASSERT(!forDragging);
78        m_readableData = QApplication::clipboard()->mimeData();
79    }
80#endif
81}
82
83ClipboardQt::~ClipboardQt()
84{
85    if (m_writableData && !isForDragging())
86        m_writableData = 0;
87    else
88        delete m_writableData;
89    m_readableData = 0;
90}
91
92void ClipboardQt::clearData(const String& type)
93{
94    if (policy() != ClipboardWritable)
95        return;
96
97    if (m_writableData) {
98        m_writableData->removeFormat(type);
99        if (m_writableData->formats().isEmpty()) {
100            if (isForDragging())
101                delete m_writableData;
102            m_writableData = 0;
103        }
104    }
105#ifndef QT_NO_CLIPBOARD
106    if (!isForDragging())
107        QApplication::clipboard()->setMimeData(m_writableData);
108#endif
109}
110
111void ClipboardQt::clearAllData()
112{
113    if (policy() != ClipboardWritable)
114        return;
115
116#ifndef QT_NO_CLIPBOARD
117    if (!isForDragging())
118        QApplication::clipboard()->setMimeData(0);
119    else
120#endif
121        delete m_writableData;
122    m_writableData = 0;
123}
124
125String ClipboardQt::getData(const String& type, bool& success) const
126{
127
128    if (policy() != ClipboardReadable) {
129        success = false;
130        return String();
131    }
132
133    ASSERT(m_readableData);
134    QByteArray data = m_readableData->data(QString(type));
135    success = !data.isEmpty();
136    return String(data.data(), data.size());
137}
138
139bool ClipboardQt::setData(const String& type, const String& data)
140{
141    if (policy() != ClipboardWritable)
142        return false;
143
144    if (!m_writableData)
145        m_writableData = new QMimeData;
146    QByteArray array(reinterpret_cast<const char*>(data.characters()),
147                     data.length()*2);
148    m_writableData->setData(QString(type), array);
149#ifndef QT_NO_CLIPBOARD
150    if (!isForDragging())
151        QApplication::clipboard()->setMimeData(m_writableData);
152#endif
153    return true;
154}
155
156// extensions beyond IE's API
157HashSet<String> ClipboardQt::types() const
158{
159    if (policy() != ClipboardReadable && policy() != ClipboardTypesReadable)
160        return HashSet<String>();
161
162    ASSERT(m_readableData);
163    HashSet<String> result;
164    QStringList formats = m_readableData->formats();
165    for (int i = 0; i < formats.count(); ++i)
166        result.add(formats.at(i));
167    return result;
168}
169
170PassRefPtr<FileList> ClipboardQt::files() const
171{
172    notImplemented();
173    return 0;
174}
175
176void ClipboardQt::setDragImage(CachedImage* image, const IntPoint& point)
177{
178    setDragImage(image, 0, point);
179}
180
181void ClipboardQt::setDragImageElement(Node* node, const IntPoint& point)
182{
183    setDragImage(0, node, point);
184}
185
186void ClipboardQt::setDragImage(CachedImage* image, Node *node, const IntPoint &loc)
187{
188    if (policy() != ClipboardImageWritable && policy() != ClipboardWritable)
189        return;
190
191    if (m_dragImage)
192        m_dragImage->removeClient(this);
193    m_dragImage = image;
194    if (m_dragImage)
195        m_dragImage->addClient(this);
196
197    m_dragLoc = loc;
198    m_dragImageElement = node;
199}
200
201DragImageRef ClipboardQt::createDragImage(IntPoint& dragLoc) const
202{
203    if (!m_dragImage)
204        return 0;
205    dragLoc = m_dragLoc;
206    return m_dragImage->image()->nativeImageForCurrentFrame();
207}
208
209
210static CachedImage* getCachedImage(Element* element)
211{
212    // Attempt to pull CachedImage from element
213    ASSERT(element);
214    RenderObject* renderer = element->renderer();
215    if (!renderer || !renderer->isImage())
216        return 0;
217
218    RenderImage* image = toRenderImage(renderer);
219    if (image->cachedImage() && !image->cachedImage()->errorOccurred())
220        return image->cachedImage();
221
222    return 0;
223}
224
225void ClipboardQt::declareAndWriteDragImage(Element* element, const KURL& url, const String& title, Frame* frame)
226{
227    ASSERT(frame);
228
229    //WebCore::writeURL(m_writableDataObject.get(), url, title, true, false);
230    if (!m_writableData)
231        m_writableData = new QMimeData;
232
233    CachedImage* cachedImage = getCachedImage(element);
234    if (!cachedImage || !cachedImage->image() || !cachedImage->isLoaded())
235        return;
236    QPixmap *pixmap = cachedImage->image()->nativeImageForCurrentFrame();
237    if (pixmap)
238        m_writableData->setImageData(*pixmap);
239
240    AtomicString imageURL = element->getAttribute(HTMLNames::srcAttr);
241    if (imageURL.isEmpty())
242        return;
243
244    KURL fullURL = frame->document()->completeURL(deprecatedParseURL(imageURL));
245    if (fullURL.isEmpty())
246        return;
247
248    QList<QUrl> urls;
249    urls.append(url);
250    urls.append(fullURL);
251
252    m_writableData->setText(title);
253    m_writableData->setUrls(urls);
254#ifndef QT_NO_CLIPBOARD
255    if (!isForDragging())
256        QApplication::clipboard()->setMimeData(m_writableData);
257#endif
258}
259
260void ClipboardQt::writeURL(const KURL& url, const String& title, Frame* frame)
261{
262    ASSERT(frame);
263
264    QList<QUrl> urls;
265    urls.append(frame->document()->completeURL(url.string()));
266    if (!m_writableData)
267        m_writableData = new QMimeData;
268    m_writableData->setUrls(urls);
269    m_writableData->setText(title);
270#ifndef QT_NO_CLIPBOARD
271    if (!isForDragging())
272        QApplication::clipboard()->setMimeData(m_writableData);
273#endif
274}
275
276void ClipboardQt::writeRange(Range* range, Frame* frame)
277{
278    ASSERT(range);
279    ASSERT(frame);
280
281    if (!m_writableData)
282        m_writableData = new QMimeData;
283    QString text = frame->selectedText();
284    text.replace(QChar(0xa0), QLatin1Char(' '));
285    m_writableData->setText(text);
286    m_writableData->setHtml(createMarkup(range, 0, AnnotateForInterchange));
287#ifndef QT_NO_CLIPBOARD
288    if (!isForDragging())
289        QApplication::clipboard()->setMimeData(m_writableData);
290#endif
291}
292
293void ClipboardQt::writePlainText(const String& str)
294{
295    if (!m_writableData)
296        m_writableData = new QMimeData;
297    QString text = str;
298    text.replace(QChar(0xa0), QLatin1Char(' '));
299    m_writableData->setText(text);
300#ifndef QT_NO_CLIPBOARD
301    if (!isForDragging())
302        QApplication::clipboard()->setMimeData(m_writableData);
303#endif
304}
305
306bool ClipboardQt::hasData()
307{
308    const QMimeData *data = m_readableData ? m_readableData : m_writableData;
309    if (!data)
310        return false;
311    return data->formats().count() > 0;
312}
313
314}
315