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/*
* 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;
}
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