131 lines
4.4 KiB
C++
131 lines
4.4 KiB
C++
// Copyright (c) 2011 The Chromium Embedded Framework Authors.
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// Portions copyright (c) 2011 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "web_drop_target_win.h"
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#include "cef_context.h"
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#include "web_drag_utils_win.h"
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#include <windows.h>
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#include <shlobj.h>
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#include "googleurl/src/gurl.h"
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#include "net/base/net_util.h"
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#include "third_party/WebKit/Source/WebKit/chromium/public/WebDragData.h"
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#include "third_party/WebKit/Source/WebKit/chromium/public/WebPoint.h"
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#include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
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#include "ui/base/clipboard/clipboard_util_win.h"
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#include "ui/base/dragdrop/os_exchange_data.h"
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#include "ui/base/dragdrop/os_exchange_data_provider_win.h"
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#include "webkit/glue/webdropdata.h"
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#include "webkit/glue/window_open_disposition.h"
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using WebKit::WebDragOperation;
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using WebKit::WebDragOperationNone;
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using WebKit::WebDragOperationCopy;
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using WebKit::WebDragOperationLink;
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using WebKit::WebDragOperationMove;
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using WebKit::WebDragOperationGeneric;
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using WebKit::WebPoint;
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namespace {
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// A helper method for getting the preferred drop effect.
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DWORD GetPreferredDropEffect(DWORD effect) {
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if (effect & DROPEFFECT_COPY)
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return DROPEFFECT_COPY;
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if (effect & DROPEFFECT_LINK)
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return DROPEFFECT_LINK;
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if (effect & DROPEFFECT_MOVE)
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return DROPEFFECT_MOVE;
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return DROPEFFECT_NONE;
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}
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} // namespace
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WebDropTarget::WebDropTarget(HWND source_hwnd, WebKit::WebView* view)
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: ui::DropTarget(source_hwnd),
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view_(view),
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current_wvh_(NULL),
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drag_cursor_(WebDragOperationNone) {
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}
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WebDropTarget::~WebDropTarget() {
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}
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DWORD WebDropTarget::OnDragEnter(IDataObject* data_object,
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DWORD key_state,
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POINT cursor_position,
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DWORD effects) {
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current_wvh_ = _Context->current_webviewhost();
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// TODO(tc): PopulateWebDropData can be slow depending on what is in the
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// IDataObject. Maybe we can do this in a background thread.
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WebDropData drop_data;
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WebDropData::PopulateWebDropData(data_object, &drop_data);
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if (drop_data.url.is_empty())
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ui::OSExchangeDataProviderWin::GetPlainTextURL(data_object, &drop_data.url);
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drag_cursor_ = WebDragOperationNone;
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POINT client_pt = cursor_position;
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ScreenToClient(GetHWND(), &client_pt);
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WebDragOperation operation = view_->dragTargetDragEnter(
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drop_data.ToDragData(),
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WebPoint(client_pt.x, client_pt.y),
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WebPoint(cursor_position.x, cursor_position.y),
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web_drag_utils_win::WinDragOpMaskToWebDragOpMask(effects));
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return web_drag_utils_win::WebDragOpToWinDragOp(operation);
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}
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DWORD WebDropTarget::OnDragOver(IDataObject* data_object,
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DWORD key_state,
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POINT cursor_position,
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DWORD effects) {
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DCHECK(current_wvh_);
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if (current_wvh_ != _Context->current_webviewhost())
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OnDragEnter(data_object, key_state, cursor_position, effects);
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POINT client_pt = cursor_position;
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ScreenToClient(GetHWND(), &client_pt);
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WebDragOperation operation = view_->dragTargetDragOver(
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WebPoint(client_pt.x, client_pt.y),
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WebPoint(cursor_position.x, cursor_position.y),
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web_drag_utils_win::WinDragOpMaskToWebDragOpMask(effects));
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return web_drag_utils_win::WebDragOpToWinDragOp(operation);
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}
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void WebDropTarget::OnDragLeave(IDataObject* data_object) {
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DCHECK(current_wvh_);
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if (current_wvh_ != _Context->current_webviewhost())
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return;
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view_->dragTargetDragLeave();
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}
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DWORD WebDropTarget::OnDrop(IDataObject* data_object,
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DWORD key_state,
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POINT cursor_position,
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DWORD effect) {
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DCHECK(current_wvh_);
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if (current_wvh_ != _Context->current_webviewhost())
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OnDragEnter(data_object, key_state, cursor_position, effect);
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POINT client_pt = cursor_position;
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ScreenToClient(GetHWND(), &client_pt);
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view_->dragTargetDrop(
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WebPoint(client_pt.x, client_pt.y),
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WebPoint(cursor_position.x, cursor_position.y));
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current_wvh_ = NULL;
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// This isn't always correct, but at least it's a close approximation.
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// For now, we always map a move to a copy to prevent potential data loss.
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DWORD drop_effect = web_drag_utils_win::WebDragOpToWinDragOp(drag_cursor_);
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return drop_effect != DROPEFFECT_MOVE ? drop_effect : DROPEFFECT_COPY;
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}
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