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/system/tray/tray_event_filter.h"
6
7#include "ash/root_window_controller.h"
8#include "ash/shelf/shelf_layout_manager.h"
9#include "ash/shell.h"
10#include "ash/shell_window_ids.h"
11#include "ash/system/tray/tray_background_view.h"
12#include "ash/system/tray/tray_bubble_wrapper.h"
13#include "ash/system/tray/tray_constants.h"
14#include "ash/system/tray/tray_event_filter.h"
15#include "ash/wm/property_util.h"
16#include "ui/aura/client/screen_position_client.h"
17#include "ui/aura/root_window.h"
18#include "ui/aura/window.h"
19#include "ui/views/widget/widget.h"
20
21namespace ash {
22namespace internal {
23
24TrayEventFilter::TrayEventFilter() {
25}
26
27TrayEventFilter::~TrayEventFilter() {
28  DCHECK(wrappers_.empty());
29}
30
31void TrayEventFilter::AddWrapper(TrayBubbleWrapper* wrapper) {
32  bool was_empty = wrappers_.empty();
33  wrappers_.insert(wrapper);
34  if (was_empty && !wrappers_.empty())
35    ash::Shell::GetInstance()->AddPreTargetHandler(this);
36}
37
38void TrayEventFilter::RemoveWrapper(TrayBubbleWrapper* wrapper) {
39  wrappers_.erase(wrapper);
40  if (wrappers_.empty())
41    ash::Shell::GetInstance()->RemovePreTargetHandler(this);
42}
43
44void TrayEventFilter::OnMouseEvent(ui::MouseEvent* event) {
45  if (event->type() == ui::ET_MOUSE_PRESSED &&
46      ProcessLocatedEvent(event)) {
47    event->StopPropagation();
48  }
49}
50
51void TrayEventFilter::OnTouchEvent(ui::TouchEvent* event) {
52  if (event->type() == ui::ET_TOUCH_PRESSED && ProcessLocatedEvent(event))
53    event->StopPropagation();
54}
55
56bool TrayEventFilter::ProcessLocatedEvent(ui::LocatedEvent* event) {
57  if (event->target()) {
58    aura::Window* target = static_cast<aura::Window*>(event->target());
59    // Don't process events that occurred inside an embedded menu.
60    ash::internal::RootWindowController* root_controller =
61        ash::GetRootWindowController(target->GetRootWindow());
62    if (root_controller && root_controller->GetContainer(
63            ash::internal::kShellWindowId_MenuContainer)->Contains(target)) {
64      return false;
65    }
66  }
67
68  // Check the boundary for all wrappers, and do not handle the event if it
69  // happens inside of any of those wrappers.
70  for (std::set<TrayBubbleWrapper*>::const_iterator iter = wrappers_.begin();
71       iter != wrappers_.end(); ++iter) {
72    const TrayBubbleWrapper* wrapper = *iter;
73    const views::Widget* bubble_widget = wrapper->bubble_widget();
74    if (!bubble_widget)
75      continue;
76
77    gfx::Rect bounds = bubble_widget->GetWindowBoundsInScreen();
78    bounds.Inset(wrapper->bubble_view()->GetBorderInsets());
79    aura::RootWindow* root = bubble_widget->GetNativeView()->GetRootWindow();
80    aura::client::ScreenPositionClient* screen_position_client =
81        aura::client::GetScreenPositionClient(root);
82    gfx::Point screen_point(event->root_location());
83    screen_position_client->ConvertPointToScreen(root, &screen_point);
84
85    if (bounds.Contains(screen_point))
86      return false;
87    if (wrapper->tray()) {
88      // If the user clicks on the parent tray, don't process the event here,
89      // let the tray logic handle the event and determine show/hide behavior.
90      bounds = wrapper->tray()->GetBoundsInScreen();
91      if (bounds.Contains(screen_point))
92        return false;
93    }
94  }
95
96  // Handle clicking outside the bubble and tray and return true if the
97  // event was handled.
98  // Cannot iterate |wrappers_| directly, because clicking outside will remove
99  // the wrapper, which shrinks |wrappers_| unsafely.
100  std::set<TrayBackgroundView*> trays;
101  for (std::set<TrayBubbleWrapper*>::iterator iter = wrappers_.begin();
102       iter != wrappers_.end(); ++iter) {
103    trays.insert((*iter)->tray());
104  }
105  bool handled = false;
106  for (std::set<TrayBackgroundView*>::iterator iter = trays.begin();
107       iter != trays.end(); ++iter) {
108    handled |= (*iter)->ClickedOutsideBubble();
109  }
110  return handled;
111}
112
113}  // namespace internal
114}  // namespace ash
115