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 "ui/views/controls/menu/menu_host.h"
6
7 #include "base/auto_reset.h"
8 #include "base/debug/trace_event.h"
9 #include "ui/events/gestures/gesture_recognizer.h"
10 #include "ui/gfx/path.h"
11 #include "ui/native_theme/native_theme.h"
12 #include "ui/views/controls/menu/menu_controller.h"
13 #include "ui/views/controls/menu/menu_host_root_view.h"
14 #include "ui/views/controls/menu/menu_item_view.h"
15 #include "ui/views/controls/menu/menu_scroll_view_container.h"
16 #include "ui/views/controls/menu/submenu_view.h"
17 #include "ui/views/round_rect_painter.h"
18 #include "ui/views/widget/native_widget_private.h"
19 #include "ui/views/widget/widget.h"
20
21 namespace views {
22
23 ////////////////////////////////////////////////////////////////////////////////
24 // MenuHost, public:
25
MenuHost(SubmenuView * submenu)26 MenuHost::MenuHost(SubmenuView* submenu)
27 : submenu_(submenu),
28 destroying_(false),
29 ignore_capture_lost_(false) {
30 set_auto_release_capture(false);
31 }
32
~MenuHost()33 MenuHost::~MenuHost() {
34 }
35
InitMenuHost(Widget * parent,const gfx::Rect & bounds,View * contents_view,bool do_capture)36 void MenuHost::InitMenuHost(Widget* parent,
37 const gfx::Rect& bounds,
38 View* contents_view,
39 bool do_capture) {
40 TRACE_EVENT0("views", "MenuHost::InitMenuHost");
41 Widget::InitParams params(Widget::InitParams::TYPE_MENU);
42 const MenuController* menu_controller =
43 submenu_->GetMenuItem()->GetMenuController();
44 const MenuConfig& menu_config = submenu_->GetMenuItem()->GetMenuConfig();
45 bool rounded_border = menu_controller && menu_config.corner_radius > 0;
46 bool bubble_border = submenu_->GetScrollViewContainer() &&
47 submenu_->GetScrollViewContainer()->HasBubbleBorder();
48 params.shadow_type = bubble_border ? Widget::InitParams::SHADOW_TYPE_NONE
49 : Widget::InitParams::SHADOW_TYPE_DROP;
50 params.opacity = (bubble_border || rounded_border) ?
51 Widget::InitParams::TRANSLUCENT_WINDOW :
52 Widget::InitParams::OPAQUE_WINDOW;
53 params.parent = parent ? parent->GetNativeView() : NULL;
54 params.bounds = bounds;
55 Init(params);
56
57 SetContentsView(contents_view);
58 ShowMenuHost(do_capture);
59 }
60
IsMenuHostVisible()61 bool MenuHost::IsMenuHostVisible() {
62 return IsVisible();
63 }
64
ShowMenuHost(bool do_capture)65 void MenuHost::ShowMenuHost(bool do_capture) {
66 // Doing a capture may make us get capture lost. Ignore it while we're in the
67 // process of showing.
68 base::AutoReset<bool> reseter(&ignore_capture_lost_, true);
69 ShowInactive();
70 if (do_capture) {
71 // Cancel existing touches, so we don't miss some touch release/cancel
72 // events due to the menu taking capture.
73 ui::GestureRecognizer::Get()->TransferEventsTo(NULL, NULL);
74 native_widget_private()->SetCapture();
75 }
76 }
77
HideMenuHost()78 void MenuHost::HideMenuHost() {
79 ignore_capture_lost_ = true;
80 ReleaseMenuHostCapture();
81 Hide();
82 ignore_capture_lost_ = false;
83 }
84
DestroyMenuHost()85 void MenuHost::DestroyMenuHost() {
86 HideMenuHost();
87 destroying_ = true;
88 static_cast<MenuHostRootView*>(GetRootView())->ClearSubmenu();
89 Close();
90 }
91
SetMenuHostBounds(const gfx::Rect & bounds)92 void MenuHost::SetMenuHostBounds(const gfx::Rect& bounds) {
93 SetBounds(bounds);
94 }
95
ReleaseMenuHostCapture()96 void MenuHost::ReleaseMenuHostCapture() {
97 if (native_widget_private()->HasCapture())
98 native_widget_private()->ReleaseCapture();
99 }
100
101 ////////////////////////////////////////////////////////////////////////////////
102 // MenuHost, Widget overrides:
103
CreateRootView()104 internal::RootView* MenuHost::CreateRootView() {
105 return new MenuHostRootView(this, submenu_);
106 }
107
OnMouseCaptureLost()108 void MenuHost::OnMouseCaptureLost() {
109 if (destroying_ || ignore_capture_lost_)
110 return;
111 MenuController* menu_controller =
112 submenu_->GetMenuItem()->GetMenuController();
113 if (menu_controller && !menu_controller->drag_in_progress())
114 menu_controller->CancelAll();
115 Widget::OnMouseCaptureLost();
116 }
117
OnNativeWidgetDestroyed()118 void MenuHost::OnNativeWidgetDestroyed() {
119 if (!destroying_) {
120 // We weren't explicitly told to destroy ourselves, which means the menu was
121 // deleted out from under us (the window we're parented to was closed). Tell
122 // the SubmenuView to drop references to us.
123 submenu_->MenuHostDestroyed();
124 }
125 Widget::OnNativeWidgetDestroyed();
126 }
127
OnOwnerClosing()128 void MenuHost::OnOwnerClosing() {
129 if (destroying_)
130 return;
131
132 MenuController* menu_controller =
133 submenu_->GetMenuItem()->GetMenuController();
134 if (menu_controller && !menu_controller->drag_in_progress())
135 menu_controller->CancelAll();
136 }
137
138 } // namespace views
139