1/* 2 * Copyright (C) 2011 Google 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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 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. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 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 "ClipboardMimeTypes.h" 39#include "PlatformBridge.h" 40#include "SharedBuffer.h" 41#include "StringCallback.h" 42 43namespace WebCore { 44 45PassRefPtr<DataTransferItemChromium> DataTransferItemChromium::createFromPasteboard(PassRefPtr<Clipboard> owner, ScriptExecutionContext* context, const String& type) 46{ 47 if (type == mimeTypeTextPlain || type == mimeTypeTextHTML) 48 return adoptRef(new DataTransferItemChromium(owner, context, PasteboardSource, DataTransferItem::kindString, type, "")); 49 return adoptRef(new DataTransferItemChromium(owner, context, PasteboardSource, DataTransferItem::kindFile, type, "")); 50} 51 52PassRefPtr<DataTransferItemChromium> DataTransferItemChromium::create(PassRefPtr<Clipboard> owner, 53 ScriptExecutionContext* context, 54 const String& data, 55 const String& type) 56{ 57 return adoptRef(new DataTransferItemChromium(owner, context, InternalSource, DataTransferItem::kindString, type, data)); 58} 59 60DataTransferItemChromium::DataTransferItemChromium(PassRefPtr<Clipboard> owner, ScriptExecutionContext* context, DataSource source, const String& kind, const String& type, const String& data) 61 : m_owner(owner) 62 , m_context(context) 63 , m_source(source) 64 , m_kind(kind) 65 , m_type(type) 66 , m_data(data) 67{ 68} 69 70String DataTransferItemChromium::kind() const 71{ 72 if (m_owner->policy() == ClipboardNumb) 73 return String(); 74 return m_kind; 75} 76 77String DataTransferItemChromium::type() const 78{ 79 if (m_owner->policy() == ClipboardNumb) 80 return String(); 81 return m_type; 82} 83 84void DataTransferItemChromium::getAsString(PassRefPtr<StringCallback> callback) 85{ 86 if ((m_owner->policy() != ClipboardReadable && m_owner->policy() != ClipboardWritable) 87 || m_kind != kindString) 88 return; 89 if (m_source == InternalSource) { 90 callback->scheduleCallback(m_context, m_data); 91 return; 92 } 93 94 ASSERT(m_source == PasteboardSource); 95 // This is ugly but there's no real alternative. 96 if (m_type == mimeTypeTextPlain) { 97 callback->scheduleCallback(m_context, PlatformBridge::clipboardReadPlainText(PasteboardPrivate::StandardBuffer)); 98 return; 99 } 100 if (m_type == mimeTypeTextHTML) { 101 String html; 102 KURL ignoredSourceURL; 103 PlatformBridge::clipboardReadHTML(PasteboardPrivate::StandardBuffer, &html, &ignoredSourceURL); 104 callback->scheduleCallback(m_context, html); 105 return; 106 } 107 ASSERT_NOT_REACHED(); 108} 109 110PassRefPtr<Blob> DataTransferItemChromium::getAsFile() 111{ 112 if (m_source == InternalSource) 113 return 0; 114 115 ASSERT(m_source == PasteboardSource); 116 if (m_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 = PlatformBridge::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) 140