1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "content/renderer/render_view_mouse_lock_dispatcher.h"
6
7#include "content/common/view_messages.h"
8#include "content/renderer/render_view_impl.h"
9#include "third_party/WebKit/public/web/WebFrame.h"
10#include "third_party/WebKit/public/web/WebUserGestureIndicator.h"
11#include "third_party/WebKit/public/web/WebView.h"
12#include "third_party/WebKit/public/web/WebWidget.h"
13
14using blink::WebUserGestureIndicator;
15
16namespace content {
17
18RenderViewMouseLockDispatcher::RenderViewMouseLockDispatcher(
19    RenderViewImpl* render_view_impl)
20    : RenderViewObserver(render_view_impl),
21      render_view_impl_(render_view_impl) {
22}
23
24RenderViewMouseLockDispatcher::~RenderViewMouseLockDispatcher() {
25}
26
27void RenderViewMouseLockDispatcher::SendLockMouseRequest(
28    bool unlocked_by_target) {
29  bool user_gesture = WebUserGestureIndicator::isProcessingUserGesture();
30
31  Send(new ViewHostMsg_LockMouse(routing_id(), user_gesture, unlocked_by_target,
32                                 false));
33}
34
35void RenderViewMouseLockDispatcher::SendUnlockMouseRequest() {
36  Send(new ViewHostMsg_UnlockMouse(routing_id()));
37}
38
39bool RenderViewMouseLockDispatcher::OnMessageReceived(
40    const IPC::Message& message) {
41  bool handled = true;
42  IPC_BEGIN_MESSAGE_MAP(RenderViewMouseLockDispatcher, message)
43    IPC_MESSAGE_HANDLER(ViewMsg_LockMouse_ACK, OnLockMouseACK)
44    IPC_MESSAGE_FORWARD(ViewMsg_MouseLockLost,
45                        static_cast<MouseLockDispatcher*>(this),
46                        MouseLockDispatcher::OnMouseLockLost)
47    IPC_MESSAGE_UNHANDLED(handled = false)
48  IPC_END_MESSAGE_MAP()
49  return handled;
50}
51
52void RenderViewMouseLockDispatcher::OnLockMouseACK(bool succeeded) {
53  // Notify the base class.
54  MouseLockDispatcher::OnLockMouseACK(succeeded);
55
56  // Mouse Lock removes the system cursor and provides all mouse motion as
57  // .movementX/Y values on events all sent to a fixed target. This requires
58  // content to specifically request the mode to be entered.
59  // Mouse Capture is implicitly given for the duration of a drag event, and
60  // sends all mouse events to the initial target of the drag.
61  // If Lock is entered it supercedes any in progress Capture.
62  if (succeeded && render_view_impl_->webwidget())
63    render_view_impl_->webwidget()->mouseCaptureLost();
64}
65
66}  // namespace content
67