1 /* 2 * Copyright (c) 2010 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 #ifndef ReadableDataObject_h 32 #define ReadableDataObject_h 33 34 #include "Clipboard.h" 35 #include "PlatformString.h" 36 #include <wtf/HashSet.h> 37 #include <wtf/RefCounted.h> 38 #include <wtf/RefPtr.h> 39 #include <wtf/text/StringHash.h> 40 41 namespace WebCore { 42 43 // Used for one way communication of drag/drop and copy/paste data from the 44 // browser to the renderer. 45 class ReadableDataObject : public RefCounted<ReadableDataObject> { 46 public: 47 static PassRefPtr<ReadableDataObject> create(Clipboard::ClipboardType); 48 49 bool hasData() const; 50 HashSet<String> types() const; 51 String getData(const String& type, bool& succeeded) const; 52 53 String urlTitle() const; 54 KURL htmlBaseUrl() const; 55 56 bool containsFilenames() const; 57 Vector<String> filenames() const; 58 59 private: 60 explicit ReadableDataObject(Clipboard::ClipboardType); 61 62 // This isn't always const... but most of the time it is. 63 void ensureTypeCacheInitialized() const; 64 65 Clipboard::ClipboardType m_clipboardType; 66 67 // To avoid making a lot of IPC calls for each drag event, we cache some 68 // values in the renderer. 69 mutable HashSet<String> m_types; 70 mutable bool m_containsFilenames; 71 mutable bool m_isTypeCacheInitialized; 72 }; 73 74 } // namespace WebCore 75 76 #endif 77
