| /* |
| * Copyright (c) 2008, 2009, Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef DataObject_h |
| #define DataObject_h |
| |
| #include "core/CoreExport.h" |
| #include "core/clipboard/DataObjectItem.h" |
| #include "platform/PasteMode.h" |
| #include "platform/Supplementable.h" |
| #include "platform/heap/Handle.h" |
| #include "platform/wtf/PassRefPtr.h" |
| #include "platform/wtf/Vector.h" |
| #include "platform/wtf/text/StringHash.h" |
| #include "platform/wtf/text/WTFString.h" |
| |
| namespace blink { |
| |
| class KURL; |
| class SharedBuffer; |
| class WebDragData; |
| |
| // A data object for holding data that would be in a clipboard or moved |
| // during a drag-n-drop operation. This is the data that WebCore is aware |
| // of and is not specific to a platform. |
| class CORE_EXPORT DataObject : public GarbageCollectedFinalized<DataObject>, |
| public Supplementable<DataObject> { |
| USING_GARBAGE_COLLECTED_MIXIN(DataObject); |
| |
| public: |
| struct CORE_EXPORT Observer : public GarbageCollectedMixin { |
| // Called whenever |item_list_| is modified. Note it can be called multiple |
| // times for a single mutation. For example, DataObject::SetData() calls |
| // both ClearData() and Add(), each of which can call this method. |
| virtual void OnItemListChanged() = 0; |
| }; |
| |
| static DataObject* CreateFromPasteboard(PasteMode); |
| static DataObject* CreateFromString(const String&); |
| static DataObject* Create(); |
| static DataObject* Create(WebDragData); |
| |
| virtual ~DataObject(); |
| |
| // DataTransferItemList support. |
| size_t length() const; |
| DataObjectItem* Item(unsigned long index); |
| // FIXME: Implement V8DataTransferItemList::indexedPropertyDeleter to get this |
| // called. |
| void DeleteItem(unsigned long index); |
| void ClearAll(); |
| // Returns null if an item already exists with the provided type. |
| DataObjectItem* Add(const String& data, const String& type); |
| DataObjectItem* Add(File*); |
| DataObjectItem* Add(File*, const String& file_system_id); |
| |
| // WebCore helpers. |
| void ClearData(const String& type); |
| |
| Vector<String> Types() const; |
| String GetData(const String& type) const; |
| void SetData(const String& type, const String& data); |
| |
| void UrlAndTitle(String& url, String* title = 0) const; |
| void SetURLAndTitle(const String& url, const String& title); |
| void HtmlAndBaseURL(String& html, KURL& base_url) const; |
| void SetHTMLAndBaseURL(const String& html, const KURL& base_url); |
| |
| // Used for dragging in files from the desktop. |
| bool ContainsFilenames() const; |
| Vector<String> Filenames() const; |
| void AddFilename(const String& filename, |
| const String& display_name, |
| const String& file_system_id); |
| |
| // Used for dragging in filesystem from the desktop. |
| void SetFilesystemId(const String& file_system_id) { |
| filesystem_id_ = file_system_id; |
| } |
| const String& FilesystemId() const { |
| DCHECK(!filesystem_id_.IsEmpty()); |
| return filesystem_id_; |
| } |
| |
| // Used to handle files (images) being dragged out. |
| void AddSharedBuffer(PassRefPtr<SharedBuffer>, |
| const KURL&, |
| const String& filename_extension, |
| const AtomicString& content_disposition); |
| |
| int GetModifiers() const { return modifiers_; } |
| void SetModifiers(int modifiers) { modifiers_ = modifiers; } |
| |
| // Adds an observer (and retains a reference to it) that is notified |
| // whenever the underlying item_list_ changes. |
| void AddObserver(Observer*); |
| |
| DECLARE_TRACE(); |
| |
| WebDragData ToWebDragData(); |
| |
| private: |
| DataObject(); |
| |
| DataObjectItem* FindStringItem(const String& type) const; |
| bool InternalAddStringItem(DataObjectItem*); |
| void InternalAddFileItem(DataObjectItem*); |
| |
| void NotifyItemListChanged() const; |
| |
| HeapVector<Member<DataObjectItem>> item_list_; |
| HeapHashSet<Member<Observer>> observers_; |
| |
| // State of Shift/Ctrl/Alt/Meta keys and Left/Right/Middle mouse buttons |
| int modifiers_; |
| String filesystem_id_; |
| }; |
| |
| } // namespace blink |
| |
| #endif |