1/* 2 * Copyright (C) 2007 Apple 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 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#import "config.h" 27#import "DragController.h" 28 29#if ENABLE(DRAG_SUPPORT) 30 31#import "DataTransfer.h" 32#import "DragClient.h" 33#import "DragData.h" 34#import "Element.h" 35#import "FrameView.h" 36#import "MainFrame.h" 37#import "Page.h" 38#import "Pasteboard.h" 39 40namespace WebCore { 41 42const int DragController::LinkDragBorderInset = -2; 43 44const int DragController::MaxOriginalImageArea = 1500 * 1500; 45const int DragController::DragIconRightInset = 7; 46const int DragController::DragIconBottomInset = 3; 47 48const float DragController::DragImageAlpha = 0.75f; 49 50bool DragController::isCopyKeyDown(DragData& dragData) 51{ 52 return dragData.flags() & DragApplicationIsCopyKeyDown; 53} 54 55DragOperation DragController::dragOperation(DragData& dragData) 56{ 57 if ((dragData.flags() & DragApplicationIsModal) || !dragData.containsURL(&m_page.mainFrame())) 58 return DragOperationNone; 59 60 if (!m_documentUnderMouse || (!(dragData.flags() & (DragApplicationHasAttachedSheet | DragApplicationIsSource)))) 61 return DragOperationCopy; 62 63 return DragOperationNone; 64} 65 66const IntSize& DragController::maxDragImageSize() 67{ 68 static const IntSize maxDragImageSize(400, 400); 69 70 return maxDragImageSize; 71} 72 73void DragController::cleanupAfterSystemDrag() 74{ 75 // Drag has ended, dragEnded *should* have been called, however it is possible 76 // for the UIDelegate to take over the drag, and fail to send the appropriate 77 // drag termination event. As dragEnded just resets drag variables, we just 78 // call it anyway to be on the safe side. 79 // We don't want to do this for WebKit2, since the client call to start the drag 80 // is asynchronous. 81 if (m_page.mainFrame().view()->platformWidget()) 82 dragEnded(); 83} 84 85void DragController::declareAndWriteDragImage(DataTransfer& dataTransfer, Element& element, const URL& url, const String& label) 86{ 87 m_client.declareAndWriteDragImage(dataTransfer.pasteboard().name(), element, url, label, element.document().frame()); 88} 89 90} // namespace WebCore 91 92#endif // ENABLE(DRAG_SUPPORT) 93