1 /* 2 * Copyright (C) 2007, 2008 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 COMPUTER, 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 COMPUTER, 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 "WebDragClient.h" 27 28 #import "WebArchive.h" 29 #import "WebDOMOperations.h" 30 #import "WebFrame.h" 31 #import "WebFrameInternal.h" 32 #import "WebHTMLViewInternal.h" 33 #import "WebHTMLViewPrivate.h" 34 #import "WebKitLogging.h" 35 #import "WebKitNSStringExtras.h" 36 #import "WebNSPasteboardExtras.h" 37 #import "WebNSURLExtras.h" 38 #import "WebStringTruncator.h" 39 #import "WebUIDelegate.h" 40 #import "WebUIDelegatePrivate.h" 41 #import "WebViewInternal.h" 42 #import <WebCore/ClipboardMac.h> 43 #import <WebCore/DragData.h> 44 #import <WebCore/Editor.h> 45 #import <WebCore/EditorClient.h> 46 #import <WebCore/EventHandler.h> 47 #import <WebCore/Frame.h> 48 #import <WebCore/FrameView.h> 49 #import <WebCore/Image.h> 50 #import <WebCore/Page.h> 51 52 using namespace WebCore; 53 54 WebDragClient::WebDragClient(WebView* webView) 55 : m_webView(webView) 56 { 57 } 58 59 static WebHTMLView *getTopHTMLView(Frame* frame) 60 { 61 ASSERT(frame); 62 ASSERT(frame->page()); 63 return (WebHTMLView*)[[kit(frame->page()->mainFrame()) frameView] documentView]; 64 } 65 66 WebCore::DragDestinationAction WebDragClient::actionMaskForDrag(WebCore::DragData* dragData) 67 { 68 return (WebCore::DragDestinationAction)[[m_webView _UIDelegateForwarder] webView:m_webView dragDestinationActionMaskForDraggingInfo:dragData->platformData()]; 69 } 70 71 void WebDragClient::willPerformDragDestinationAction(WebCore::DragDestinationAction action, WebCore::DragData* dragData) 72 { 73 [[m_webView _UIDelegateForwarder] webView:m_webView willPerformDragDestinationAction:(WebDragDestinationAction)action forDraggingInfo:dragData->platformData()]; 74 } 75 76 77 WebCore::DragSourceAction WebDragClient::dragSourceActionMaskForPoint(const IntPoint& windowPoint) 78 { 79 NSPoint viewPoint = [m_webView convertPoint:windowPoint fromView:nil]; 80 return (DragSourceAction)[[m_webView _UIDelegateForwarder] webView:m_webView dragSourceActionMaskForPoint:viewPoint]; 81 } 82 83 void WebDragClient::willPerformDragSourceAction(WebCore::DragSourceAction action, const WebCore::IntPoint& mouseDownPoint, WebCore::Clipboard* clipboard) 84 { 85 ASSERT(clipboard); 86 [[m_webView _UIDelegateForwarder] webView:m_webView willPerformDragSourceAction:(WebDragSourceAction)action fromPoint:mouseDownPoint withPasteboard:static_cast<WebCore::ClipboardMac*>(clipboard)->pasteboard()]; 87 } 88 89 void WebDragClient::startDrag(DragImageRef dragImage, const IntPoint& at, const IntPoint& eventPos, Clipboard* clipboard, Frame* frame, bool linkDrag) 90 { 91 if (!frame) 92 return; 93 ASSERT(clipboard); 94 RetainPtr<WebHTMLView> htmlView = (WebHTMLView*)[[kit(frame) frameView] documentView]; 95 if (![htmlView.get() isKindOfClass:[WebHTMLView class]]) 96 return; 97 98 NSEvent *event = linkDrag ? frame->eventHandler()->currentNSEvent() : [htmlView.get() _mouseDownEvent]; 99 WebHTMLView* topHTMLView = getTopHTMLView(frame); 100 RetainPtr<WebHTMLView> topViewProtector = topHTMLView; 101 102 [topHTMLView _stopAutoscrollTimer]; 103 NSPasteboard *pasteboard = static_cast<ClipboardMac*>(clipboard)->pasteboard(); 104 105 NSImage *dragNSImage = dragImage.get(); 106 WebHTMLView *sourceHTMLView = htmlView.get(); 107 108 id delegate = [m_webView UIDelegate]; 109 SEL selector = @selector(webView:dragImage:at:offset:event:pasteboard:source:slideBack:forView:); 110 if ([delegate respondsToSelector:selector]) { 111 if ([m_webView _catchesDelegateExceptions]) { 112 @try { 113 [delegate webView:m_webView dragImage:dragNSImage at:at offset:NSZeroSize event:event pasteboard:pasteboard source:sourceHTMLView slideBack:YES forView:topHTMLView]; 114 } @catch (id exception) { 115 ReportDiscardedDelegateException(selector, exception); 116 } 117 } else 118 [delegate webView:m_webView dragImage:dragNSImage at:at offset:NSZeroSize event:event pasteboard:pasteboard source:sourceHTMLView slideBack:YES forView:topHTMLView]; 119 } else 120 [topHTMLView dragImage:dragNSImage at:at offset:NSZeroSize event:event pasteboard:pasteboard source:sourceHTMLView slideBack:YES]; 121 } 122 123 void WebDragClient::declareAndWriteDragImage(NSPasteboard* pasteboard, DOMElement* element, NSURL* URL, NSString* title, WebCore::Frame* frame) 124 { 125 ASSERT(pasteboard); 126 ASSERT(element); 127 WebHTMLView *source = getTopHTMLView(frame); 128 WebArchive *archive = [element webArchive]; 129 130 [pasteboard _web_declareAndWriteDragImageForElement:element URL:URL title:title archive:archive source:source]; 131 } 132 133 void WebDragClient::dragControllerDestroyed() 134 { 135 delete this; 136 } 137
