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 "ash/wm/workspace/workspace_event_handler.h"
6
7#include "ash/metrics/user_metrics_recorder.h"
8#include "ash/shell.h"
9#include "ash/touch/touch_uma.h"
10#include "ash/wm/window_state.h"
11#include "ash/wm/wm_event.h"
12#include "ui/aura/window.h"
13#include "ui/aura/window_delegate.h"
14#include "ui/base/hit_test.h"
15
16namespace ash {
17
18WorkspaceEventHandler::WorkspaceEventHandler()
19    : click_component_(HTNOWHERE) {
20}
21
22WorkspaceEventHandler::~WorkspaceEventHandler() {
23}
24
25void WorkspaceEventHandler::OnMouseEvent(ui::MouseEvent* event) {
26  aura::Window* target = static_cast<aura::Window*>(event->target());
27  if (event->type() == ui::ET_MOUSE_PRESSED &&
28      event->IsOnlyLeftMouseButton() &&
29      ((event->flags() &
30          (ui::EF_IS_DOUBLE_CLICK | ui::EF_IS_TRIPLE_CLICK)) == 0)) {
31    click_component_ = target->delegate()->
32        GetNonClientComponent(event->location());
33  }
34
35  if (event->handled())
36    return;
37
38  switch (event->type()) {
39    case ui::ET_MOUSE_MOVED: {
40      int component =
41          target->delegate()->GetNonClientComponent(event->location());
42      multi_window_resize_controller_.Show(target, component,
43                                           event->location());
44      break;
45    }
46    case ui::ET_MOUSE_ENTERED:
47      break;
48    case ui::ET_MOUSE_CAPTURE_CHANGED:
49    case ui::ET_MOUSE_EXITED:
50      break;
51    case ui::ET_MOUSE_PRESSED: {
52      wm::WindowState* target_state = wm::GetWindowState(target);
53
54      if (event->IsOnlyLeftMouseButton()) {
55        if (event->flags() & ui::EF_IS_DOUBLE_CLICK) {
56          int component = target->delegate()->
57              GetNonClientComponent(event->location());
58          if (component == HTCAPTION &&
59              component == click_component_) {
60            ash::Shell::GetInstance()->metrics()->RecordUserMetricsAction(
61                ash::UMA_TOGGLE_MAXIMIZE_CAPTION_CLICK);
62            const wm::WMEvent wm_event(wm::WM_EVENT_TOGGLE_MAXIMIZE_CAPTION);
63            target_state->OnWMEvent(&wm_event);
64            event->StopPropagation();
65          }
66          // WindowEventHandler can receive each event up to two times. Once a
67          // double-click has been received clear the target. Otherwise a
68          // duplicate of the event will be checking target history against
69          // itself.
70          click_component_ = HTNOWHERE;
71        }
72      } else {
73        click_component_ = HTNOWHERE;
74      }
75
76      multi_window_resize_controller_.Hide();
77      HandleVerticalResizeDoubleClick(target_state, event);
78      break;
79    }
80    default:
81      break;
82  }
83}
84
85void WorkspaceEventHandler::OnGestureEvent(ui::GestureEvent* event) {
86  if (event->handled() || event->type() != ui::ET_GESTURE_TAP)
87    return;
88
89  aura::Window* target = static_cast<aura::Window*>(event->target());
90  int previous_target_component = click_component_;
91  click_component_ = target->delegate()->
92      GetNonClientComponent(event->location());
93
94  if (click_component_ != HTCAPTION)
95    return;
96
97  if (event->details().tap_count() != 2) {
98    // Note: TouchUMA::GESTURE_FRAMEVIEW_TAP is counted twice for each tap.
99    TouchUMA::GetInstance()->
100        RecordGestureAction(TouchUMA::GESTURE_FRAMEVIEW_TAP);
101    return;
102  }
103
104  if (click_component_ == previous_target_component) {
105    ash::Shell::GetInstance()->metrics()->RecordUserMetricsAction(
106        ash::UMA_TOGGLE_MAXIMIZE_CAPTION_GESTURE);
107    // Note: TouchUMA::GESTURE_FRAMEVIEW_TAP is counted twice each time
108    // TouchUMA::GESTURE_MAXIMIZE_DOUBLETAP is counted once.
109    TouchUMA::GetInstance()->RecordGestureAction(
110        TouchUMA::GESTURE_MAXIMIZE_DOUBLETAP);
111    const wm::WMEvent wm_event(wm::WM_EVENT_TOGGLE_MAXIMIZE_CAPTION);
112    wm::GetWindowState(target)->OnWMEvent(&wm_event);
113    event->StopPropagation();
114  }
115  click_component_ = HTNOWHERE;
116}
117
118void WorkspaceEventHandler::HandleVerticalResizeDoubleClick(
119    wm::WindowState* target_state,
120    ui::MouseEvent* event) {
121  aura::Window* target = target_state->window();
122  if (event->flags() & ui::EF_IS_DOUBLE_CLICK) {
123    int component =
124        target->delegate()->GetNonClientComponent(event->location());
125    if (component == HTBOTTOM || component == HTTOP) {
126      Shell::GetInstance()->metrics()->RecordUserMetricsAction(
127          UMA_TOGGLE_SINGLE_AXIS_MAXIMIZE_BORDER_CLICK);
128      const wm::WMEvent wm_event(wm::WM_EVENT_TOGGLE_VERTICAL_MAXIMIZE);
129      target_state->OnWMEvent(&wm_event);
130      event->StopPropagation();
131    } else if (component == HTLEFT || component == HTRIGHT) {
132      Shell::GetInstance()->metrics()->RecordUserMetricsAction(
133          UMA_TOGGLE_SINGLE_AXIS_MAXIMIZE_BORDER_CLICK);
134      const wm::WMEvent wm_event(wm::WM_EVENT_TOGGLE_HORIZONTAL_MAXIMIZE);
135      target_state->OnWMEvent(&wm_event);
136      event->StopPropagation();
137    }
138  }
139}
140
141}  // namespace ash
142