code.vuplus.com Git - vuplus_webkit/blob - Source/WebCore/platform/chromium/DataTransferItemChromium.cpp

   1 /*
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   3  *
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   6  * met:
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   9  * notice, this list of conditions and the following disclaimer.
  10  *     * Redistributions in binary form must reproduce the above
  11  * copyright notice, this list of conditions and the following disclaimer
  12  * in the documentation and/or other materials provided with the
  13  * distribution.
  14  *     * Neither the name of Google Inc. nor the names of its
  15  * contributors may be used to endorse or promote products derived from
  16  * this software without specific prior written permission.
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  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include "config.h"
  32 #include "DataTransferItemChromium.h"
  33
  34 #if ENABLE(DATA_TRANSFER_ITEMS)
  35
  36 #include "Blob.h"
  37 #include "Clipboard.h"
  38 #include "ClipboardChromium.h"
  39 #include "ClipboardMimeTypes.h"
  40 #include "PlatformSupport.h"
  41 #include "SharedBuffer.h"
  42 #include "StringCallback.h"
  43
  44 namespace WebCore {
  45
  46 PassRefPtr<DataTransferItemChromium> DataTransferItemChromium::createFromPasteboard(PassRefPtr<Clipboard> owner, ScriptExecutionContext* context, const String& type)
  47 {
  48     if (type == mimeTypeTextPlain || type == mimeTypeTextHTML)
  49         return adoptRef(new DataTransferItemChromium(owner, context, PasteboardSource, DataTransferItem::kindString, type, ""));
  50     return adoptRef(new DataTransferItemChromium(owner, context, PasteboardSource, DataTransferItem::kindFile, type, ""));
  51 }
  52
  53 PassRefPtr<DataTransferItemChromium> DataTransferItemChromium::create(PassRefPtr<Clipboard> owner,
  54                                                                       ScriptExecutionContext* context,
  55                                                                       const String& data,
  56                                                                       const String& type)
  57 {
  58     return adoptRef(new DataTransferItemChromium(owner, context, InternalSource, DataTransferItem::kindString, type, data));
  59 }
  60
  61 PassRefPtr<DataTransferItem> DataTransferItem::create(PassRefPtr<Clipboard> owner,
  62                                                       ScriptExecutionContext* context,
  63                                                       const String& data,
  64                                                       const String& type)
  65 {
  66     return DataTransferItemChromium::create(owner, context, data, type);
  67 }
  68
  69 DataTransferItemChromium::DataTransferItemChromium(PassRefPtr<Clipboard> owner, ScriptExecutionContext* context, DataSource source, const String& kind, const String& type, const String& data)
  70     : DataTransferItem(owner, kind, type)
  71     , m_context(context)
  72     , m_source(source)
  73     , m_data(data)
  74 {
  75 }
  76
  77 void DataTransferItemChromium::getAsString(PassRefPtr<StringCallback> callback)
  78 {
  79     if ((owner()->policy() != ClipboardReadable && owner()->policy() != ClipboardWritable)
  80         || kind() != kindString)
  81         return;
  82
  83     if (static_cast<ClipboardChromium*>(owner())->platformClipboardChanged())
  84         return;
  85
  86     if (m_source == InternalSource) {
  87         callback->scheduleCallback(m_context, m_data);
  88         return;
  89     }
  90
  91     ASSERT(m_source == PasteboardSource);
  92     // This is ugly but there's no real alternative.
  93     if (type() == mimeTypeTextPlain) {
  94         callback->scheduleCallback(m_context, PlatformSupport::clipboardReadPlainText(PasteboardPrivate::StandardBuffer));
  95         return;
  96     }
  97     if (type() == mimeTypeTextHTML) {
  98         String html;
  99         KURL ignoredSourceURL;
 100         PlatformSupport::clipboardReadHTML(PasteboardPrivate::StandardBuffer, &html, &ignoredSourceURL);
 101         callback->scheduleCallback(m_context, html);
 102         return;
 103     }
 104     ASSERT_NOT_REACHED();
 105 }
 106
 107 PassRefPtr<Blob> DataTransferItemChromium::getAsFile()
 108 {
 109     if (m_source == InternalSource)
 110         return 0;
 111
 112     if (static_cast<ClipboardChromium*>(owner())->platformClipboardChanged())
 113         return 0;
 114
 115     ASSERT(m_source == PasteboardSource);
 116     if (type() == mimeTypeImagePng) {
 117         // FIXME: This is pretty inefficient. We copy the data from the browser
 118         // to the renderer. We then place it in a blob in WebKit, which
 119         // registers it and copies it *back* to the browser. When a consumer
 120         // wants to read the data, we then copy the data back into the renderer.
 121         // https://bugs.webkit.org/show_bug.cgi?id=58107 has been filed to track
 122         // improvements to this code (in particular, add a registerClipboardBlob
 123         // method to the blob registry; that way the data is only copied over
 124         // into the renderer when it's actually read, not when the blob is
 125         // initially constructed).
 126         RefPtr<SharedBuffer> data = PlatformSupport::clipboardReadImage(PasteboardPrivate::StandardBuffer);
 127         RefPtr<RawData> rawData = RawData::create();
 128         rawData->mutableData()->append(data->data(), data->size());
 129         OwnPtr<BlobData> blobData = BlobData::create();
 130         blobData->appendData(rawData, 0, -1);
 131         blobData->setContentType(mimeTypeImagePng);
 132         return Blob::create(blobData.release(), data->size());
 133     }
 134     return 0;
 135 }
 136
 137 } // namespace WebCore
 138
 139 #endif // ENABLE(DATA_TRANSFER_ITEMS)