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      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 #include "config.h"
     32 #include "DragClientImpl.h"
     33 #include "DragImageRef.h"
     34 #include "ChromiumDataObject.h"
     35 #include "ClipboardChromium.h"
     36 #include "Frame.h"
     37 #include "NativeImageSkia.h"
     38 #include "WebCommon.h"
     39 #include "WebDragData.h"
     40 #include "WebImage.h"
     41 #include "WebViewClient.h"
     42 #include "WebViewImpl.h"
     43 
     44 using namespace WebCore;
     45 
     46 namespace WebKit {
     47 
     48 void DragClientImpl::willPerformDragDestinationAction(DragDestinationAction, DragData*)
     49 {
     50     // FIXME
     51 }
     52 
     53 void DragClientImpl::willPerformDragSourceAction(DragSourceAction, const IntPoint&, Clipboard*)
     54 {
     55     // FIXME
     56 }
     57 
     58 DragDestinationAction DragClientImpl::actionMaskForDrag(DragData*)
     59 {
     60     if (m_webView->client() && m_webView->client()->acceptsLoadDrops())
     61         return DragDestinationActionAny;
     62 
     63     return static_cast<DragDestinationAction>(
     64         DragDestinationActionDHTML | DragDestinationActionEdit);
     65 }
     66 
     67 DragSourceAction DragClientImpl::dragSourceActionMaskForPoint(const IntPoint& windowPoint)
     68 {
     69     // We want to handle drag operations for all source types.
     70     return DragSourceActionAny;
     71 }
     72 
     73 void DragClientImpl::startDrag(DragImageRef dragImage,
     74                                const IntPoint& dragImageOrigin,
     75                                const IntPoint& eventPos,
     76                                Clipboard* clipboard,
     77                                Frame* frame,
     78                                bool isLinkDrag)
     79 {
     80     // Add a ref to the frame just in case a load occurs mid-drag.
     81     RefPtr<Frame> frameProtector = frame;
     82 
     83     WebDragData dragData = static_cast<ClipboardChromium*>(clipboard)->dataObject();
     84 
     85     DragOperation dragOperationMask = clipboard->sourceOperation();
     86 
     87     IntSize offsetSize(eventPos - dragImageOrigin);
     88     WebPoint offsetPoint(offsetSize.width(), offsetSize.height());
     89     m_webView->startDragging(
     90         dragData, static_cast<WebDragOperationsMask>(dragOperationMask),
     91 #if WEBKIT_USING_SKIA
     92         dragImage ? WebImage(*dragImage) : WebImage(),
     93 #else
     94         dragImage ? WebImage(dragImage) : WebImage(),
     95 #endif
     96         offsetPoint);
     97 }
     98 
     99 void DragClientImpl::dragControllerDestroyed()
    100 {
    101     // Our lifetime is bound to the WebViewImpl.
    102 }
    103 
    104 } // namespace WebKit
    105