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 "core/platform/chromium/ChromiumDataObjectItem.h" 33 34 #include "core/dom/DataTransferItem.h" 35 #include "core/dom/StringCallback.h" 36 #include "core/fileapi/Blob.h" 37 #include "core/fileapi/File.h" 38 #include "core/platform/SharedBuffer.h" 39 #include "core/platform/chromium/ClipboardMimeTypes.h" 40 #include "core/platform/chromium/ClipboardUtilitiesChromium.h" 41 42 #include "public/platform/Platform.h" 43 #include "public/platform/WebClipboard.h" 44 45 namespace WebCore { 46 47 PassRefPtr<ChromiumDataObjectItem> ChromiumDataObjectItem::createFromString(const String& type, const String& data) 48 { 49 RefPtr<ChromiumDataObjectItem> item = adoptRef(new ChromiumDataObjectItem(DataTransferItem::kindString, type)); 50 item->m_data = data; 51 return item.release(); 52 } 53 54 PassRefPtr<ChromiumDataObjectItem> ChromiumDataObjectItem::createFromFile(PassRefPtr<File> file) 55 { 56 RefPtr<ChromiumDataObjectItem> item = adoptRef(new ChromiumDataObjectItem(DataTransferItem::kindFile, file->type())); 57 item->m_file = file; 58 return item.release(); 59 } 60 61 PassRefPtr<ChromiumDataObjectItem> ChromiumDataObjectItem::createFromURL(const String& url, const String& title) 62 { 63 RefPtr<ChromiumDataObjectItem> item = adoptRef(new ChromiumDataObjectItem(DataTransferItem::kindString, mimeTypeTextURIList)); 64 item->m_data = url; 65 item->m_title = title; 66 return item.release(); 67 } 68 69 PassRefPtr<ChromiumDataObjectItem> ChromiumDataObjectItem::createFromHTML(const String& html, const KURL& baseURL) 70 { 71 RefPtr<ChromiumDataObjectItem> item = adoptRef(new ChromiumDataObjectItem(DataTransferItem::kindString, mimeTypeTextHTML)); 72 item->m_data = html; 73 item->m_baseURL = baseURL; 74 return item.release(); 75 } 76 77 PassRefPtr<ChromiumDataObjectItem> ChromiumDataObjectItem::createFromSharedBuffer(const String& name, PassRefPtr<SharedBuffer> buffer) 78 { 79 RefPtr<ChromiumDataObjectItem> item = adoptRef(new ChromiumDataObjectItem(DataTransferItem::kindFile, String())); 80 item->m_sharedBuffer = buffer; 81 item->m_title = name; 82 return item.release(); 83 } 84 85 PassRefPtr<ChromiumDataObjectItem> ChromiumDataObjectItem::createFromPasteboard(const String& type, uint64_t sequenceNumber) 86 { 87 if (type == mimeTypeImagePng) 88 return adoptRef(new ChromiumDataObjectItem(DataTransferItem::kindFile, type, sequenceNumber)); 89 return adoptRef(new ChromiumDataObjectItem(DataTransferItem::kindString, type, sequenceNumber)); 90 } 91 92 ChromiumDataObjectItem::ChromiumDataObjectItem(const String& kind, const String& type) 93 : m_source(InternalSource) 94 , m_kind(kind) 95 , m_type(type) 96 , m_sequenceNumber(0) 97 { 98 } 99 100 ChromiumDataObjectItem::ChromiumDataObjectItem(const String& kind, const String& type, uint64_t sequenceNumber) 101 : m_source(PasteboardSource) 102 , m_kind(kind) 103 , m_type(type) 104 , m_sequenceNumber(sequenceNumber) 105 { 106 } 107 108 void ChromiumDataObjectItem::getAsString(PassRefPtr<StringCallback> callback, ScriptExecutionContext* context) const 109 { 110 if (!callback || kind() != DataTransferItem::kindString) 111 return; 112 113 callback->scheduleCallback(context, internalGetAsString()); 114 } 115 116 PassRefPtr<Blob> ChromiumDataObjectItem::getAsFile() const 117 { 118 if (kind() != DataTransferItem::kindFile) 119 return 0; 120 121 if (m_source == InternalSource) { 122 if (m_file) 123 return m_file; 124 ASSERT(m_sharedBuffer); 125 // FIXME: This code is currently impossible--we never populate m_sharedBuffer when dragging 126 // in. At some point though, we may need to support correctly converting a shared buffer 127 // into a file. 128 return 0; 129 } 130 131 ASSERT(m_source == PasteboardSource); 132 if (type() == mimeTypeImagePng) { 133 // FIXME: This is pretty inefficient. We copy the data from the browser 134 // to the renderer. We then place it in a blob in WebKit, which 135 // registers it and copies it *back* to the browser. When a consumer 136 // wants to read the data, we then copy the data back into the renderer. 137 // https://bugs.webkit.org/show_bug.cgi?id=58107 has been filed to track 138 // improvements to this code (in particular, add a registerClipboardBlob 139 // method to the blob registry; that way the data is only copied over 140 // into the renderer when it's actually read, not when the blob is 141 // initially constructed). 142 RefPtr<SharedBuffer> data = static_cast<PassRefPtr<SharedBuffer> >(WebKit::Platform::current()->clipboard()->readImage(WebKit::WebClipboard::BufferStandard)); 143 RefPtr<RawData> rawData = RawData::create(); 144 rawData->mutableData()->append(data->data(), data->size()); 145 OwnPtr<BlobData> blobData = BlobData::create(); 146 blobData->appendData(rawData, 0, -1); 147 blobData->setContentType(mimeTypeImagePng); 148 return Blob::create(blobData.release(), data->size()); 149 } 150 151 return 0; 152 } 153 154 String ChromiumDataObjectItem::internalGetAsString() const 155 { 156 ASSERT(m_kind == DataTransferItem::kindString); 157 158 if (m_source == InternalSource) 159 return m_data; 160 161 ASSERT(m_source == PasteboardSource); 162 163 String data; 164 // This is ugly but there's no real alternative. 165 if (m_type == mimeTypeTextPlain) 166 data = WebKit::Platform::current()->clipboard()->readPlainText(currentPasteboardBuffer()); 167 else if (m_type == mimeTypeTextHTML) { 168 WebKit::WebURL ignoredSourceURL; 169 unsigned ignored; 170 data = WebKit::Platform::current()->clipboard()->readHTML(currentPasteboardBuffer(), &ignoredSourceURL, &ignored, &ignored); 171 } else 172 data = WebKit::Platform::current()->clipboard()->readCustomData(currentPasteboardBuffer(), m_type); 173 174 return WebKit::Platform::current()->clipboard()->sequenceNumber(currentPasteboardBuffer()) == m_sequenceNumber ? data : String(); 175 } 176 177 bool ChromiumDataObjectItem::isFilename() const 178 { 179 // FIXME: https://bugs.webkit.org/show_bug.cgi?id=81261: When we properly support File dragout, 180 // we'll need to make sure this works as expected for DragDataChromium. 181 return m_kind == DataTransferItem::kindFile && m_file; 182 } 183 184 } // namespace WebCore 185 186
