Home | History | Annotate | Download | only in win 
      1 /*
      2  * Copyright (C) 2011 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 #include "config.h"
     27 #include "WebDragSource.h"
     28 
     29 #include <WebCore/Cursor.h>
     30 #include <WebCore/DragActions.h>
     31 #include <WebCore/EventHandler.h>
     32 #include <WebCore/Frame.h>
     33 #include <WebCore/Page.h>
     34 #include <WebCore/PlatformMouseEvent.h>
     35 #include <wtf/CurrentTime.h>
     36 
     37 using namespace WebCore;
     38 
     39 PassRefPtr<WebDragSource> WebDragSource::createInstance()
     40 {
     41     return adoptRef(new WebDragSource);
     42 }
     43 
     44 WebDragSource::WebDragSource()
     45 {
     46 }
     47 
     48 HRESULT WebDragSource::QueryInterface(REFIID riid, void** ppvObject)
     49 {
     50     *ppvObject = 0;
     51     if (IsEqualIID(riid, IID_IUnknown) || IsEqualIID(riid, IID_IDropSource)) {
     52         *ppvObject = this;
     53         AddRef();
     54 
     55         return S_OK;
     56     }
     57 
     58     return E_NOINTERFACE;
     59 }
     60 
     61 ULONG WebDragSource::AddRef(void)
     62 {
     63     ref();
     64     return refCount();
     65 }
     66 
     67 ULONG WebDragSource::Release(void)
     68 {
     69     deref();
     70     return refCount();
     71 }
     72 
     73 HRESULT WebDragSource::QueryContinueDrag(BOOL fEscapePressed, DWORD grfState)
     74 {
     75     if (fEscapePressed)
     76         return DRAGDROP_S_CANCEL;
     77 
     78     if (grfState & (MK_LBUTTON | MK_RBUTTON))
     79         return S_OK;
     80 
     81     return DRAGDROP_S_DROP;
     82 }
     83 
     84 HRESULT WebDragSource::GiveFeedback(DWORD dwEffect)
     85 {
     86     return DRAGDROP_S_USEDEFAULTCURSORS;
     87 }
     88