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