1 /* 2 * Copyright (C) 2009 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 WebDragData_h 32 #define WebDragData_h 33 34 #include "WebCommon.h" 35 #include "WebData.h" 36 #include "WebString.h" 37 #include "WebURL.h" 38 39 namespace WebCore { class DataObject; } 40 41 namespace blink { 42 43 class WebDragDataPrivate; 44 template <typename T> class WebVector; 45 46 // Holds data that may be exchanged through a drag-n-drop operation. It is 47 // inexpensive to copy a WebDragData object. 48 class WebDragData { 49 public: 50 struct Item { 51 enum StorageType { 52 // String data with an associated MIME type. Depending on the MIME type, there may be 53 // optional metadata attributes as well. 54 StorageTypeString, 55 // Stores the name of one file being dragged into the renderer. 56 StorageTypeFilename, 57 // An image being dragged out of the renderer. Contains a buffer holding the image data 58 // as well as the suggested name for saving the image to. 59 StorageTypeBinaryData, 60 // Stores the filesystem URL of one file being dragged into the renderer. 61 StorageTypeFileSystemFile, 62 }; 63 64 StorageType storageType; 65 66 // Only valid when storageType == StorageTypeString. 67 WebString stringType; 68 WebString stringData; 69 70 // Only valid when storageType == StorageTypeFilename. 71 WebString filenameData; 72 WebString displayNameData; 73 74 // Only valid when storageType == StorageTypeBinaryData. 75 WebData binaryData; 76 77 // Title associated with a link when stringType == "text/uri-list". 78 // Filename when storageType == StorageTypeBinaryData. 79 WebString title; 80 81 // Only valid when storageType == StorageTypeFileSystemFile. 82 WebURL fileSystemURL; 83 long long fileSystemFileSize; 84 85 // Only valid when stringType == "text/html". 86 WebURL baseURL; 87 }; 88 WebDragData()89 WebDragData() { } WebDragData(const WebDragData & object)90 WebDragData(const WebDragData& object) { assign(object); } 91 WebDragData& operator=(const WebDragData& object) 92 { 93 assign(object); 94 return *this; 95 } ~WebDragData()96 ~WebDragData() { reset(); } 97 isNull()98 bool isNull() const { return m_private.isNull(); } 99 100 BLINK_EXPORT void initialize(); 101 BLINK_EXPORT void reset(); 102 BLINK_EXPORT void assign(const WebDragData&); 103 104 BLINK_EXPORT WebVector<Item> items() const; 105 BLINK_EXPORT void setItems(const WebVector<Item>&); 106 BLINK_EXPORT void addItem(const Item&); 107 108 BLINK_EXPORT WebString filesystemId() const; 109 BLINK_EXPORT void setFilesystemId(const WebString&); 110 111 #if BLINK_IMPLEMENTATION 112 explicit WebDragData(const PassRefPtrWillBeRawPtr<WebCore::DataObject>&); 113 WebDragData& operator=(const PassRefPtrWillBeRawPtr<WebCore::DataObject>&); 114 WebCore::DataObject* getValue() const; 115 #endif 116 117 private: 118 void ensureMutable(); 119 WebPrivatePtr<WebCore::DataObject> m_private; 120 }; 121 122 } // namespace blink 123 124 #endif 125