--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebKit/win/WebDropSource.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2007 Apple 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:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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. 
+ */
+
+#include "config.h"
+#include "WebDropSource.h"
+
+#include "WebKitDLL.h"
+#include "WebView.h"
+
+#include <WebCore/Cursor.h>
+#include <WebCore/DragActions.h>
+#include <WebCore/EventHandler.h>
+#include <WebCore/Frame.h>
+#include <WebCore/FrameView.h>
+#include <WebCore/Page.h>
+#include <WebCore/PlatformMouseEvent.h>
+#include <wtf/CurrentTime.h>
+
+#include <Windows.h>
+
+using namespace WebCore;
+
+
+HRESULT WebDropSource::createInstance(WebView* webView, IDropSource** result)
+{
+    if (!webView || !result)
+        return E_INVALIDARG;
+    *result = new WebDropSource(webView);
+    return S_OK;
+}
+
+WebDropSource::WebDropSource(WebView* webView)
+: m_ref(1)
+, m_dropped(false) 
+, m_webView(webView)
+{
+    gClassCount++;
+    gClassNameCount.add("WebDropSource");
+}
+
+WebDropSource::~WebDropSource()
+{
+    gClassCount--;
+    gClassNameCount.remove("WebDropSource");
+}
+
+STDMETHODIMP WebDropSource::QueryInterface(REFIID riid, void** ppvObject)
+{
+    *ppvObject = 0;
+    if (IsEqualIID(riid, IID_IUnknown) || 
+        IsEqualIID(riid, IID_IDropSource)) {
+        *ppvObject = this;
+        AddRef();
+
+        return S_OK;
+    }
+
+    return E_NOINTERFACE;
+}
+
+STDMETHODIMP_(ULONG) WebDropSource::AddRef(void)
+{
+    return InterlockedIncrement(&m_ref);
+}
+
+STDMETHODIMP_(ULONG) WebDropSource::Release(void)
+{
+    long c = InterlockedDecrement(&m_ref);
+    if (c == 0)
+        delete this;
+    return c;
+}
+
+PlatformMouseEvent generateMouseEvent(WebView* webView, bool isDrag) {
+    POINTL pt;
+    ::GetCursorPos((LPPOINT)&pt);
+    POINTL localpt = pt;
+    HWND viewWindow;
+    if (SUCCEEDED(webView->viewWindow((OLE_HANDLE*)&viewWindow)))
+        ::ScreenToClient(viewWindow, (LPPOINT)&localpt);
+    return PlatformMouseEvent(IntPoint(localpt.x, localpt.y), IntPoint(pt.x, pt.y),
+        isDrag ? LeftButton : NoButton, MouseEventMoved, 0, false, false, false, false, currentTime());
+}
+
+STDMETHODIMP WebDropSource::QueryContinueDrag(BOOL fEscapePressed, DWORD grfKeyState)
+{
+    if (fEscapePressed || !(grfKeyState & (MK_LBUTTON|MK_RBUTTON))) {
+        m_dropped = !fEscapePressed;
+        return fEscapePressed? DRAGDROP_S_CANCEL : DRAGDROP_S_DROP;
+    }
+
+    return S_OK;
+}
+
+STDMETHODIMP WebDropSource::GiveFeedback(DWORD dwEffect)
+{
+    BOOL showCustomCursors;
+    if (FAILED(WebPreferences::sharedStandardPreferences()->customDragCursorsEnabled(&showCustomCursors)))
+        return DRAGDROP_S_USEDEFAULTCURSORS;
+
+    // If we don't want to hide the stop icon, let Windows select the cursor.
+    if (!showCustomCursors)
+        return DRAGDROP_S_USEDEFAULTCURSORS;
+
+    // If we are going to show something other than the not allowed arrow, then let Windows
+    // show the cursor.
+    if (dwEffect != DROPEFFECT_NONE)
+        return DRAGDROP_S_USEDEFAULTCURSORS;
+    
+    HWND viewWindow;
+    if (FAILED(m_webView->viewWindow(reinterpret_cast<OLE_HANDLE*>(&viewWindow))))
+        return DRAGDROP_S_USEDEFAULTCURSORS;
+
+    RECT webViewRect;
+    GetWindowRect(viewWindow, &webViewRect);
+
+    POINT cursorPoint;
+    GetCursorPos(&cursorPoint);
+
+    if (!PtInRect(&webViewRect, cursorPoint)) {
+        // If our cursor is outside the bounds of the webView, we want to let Windows select the cursor.
+        return DRAGDROP_S_USEDEFAULTCURSORS;
+    }
+
+    FrameView* view = m_webView->page()->mainFrame()->view();
+    if (!view)
+        return DRAGDROP_S_USEDEFAULTCURSORS;
+
+    // When dragging inside a WebView and the drag is not allowed, don't show the not allowed icon,
+    // instead, show the pointer cursor.   
+    // FIXME <rdar://7577595>: Custom cursors aren't supported during drag and drop (default to pointer).
+    view->setCursor(pointerCursor()); 
+    return S_OK;
+}