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/bubble/bubble_delegate.h"
6
7 #include "ui/accessibility/ax_view_state.h"
8 #include "ui/base/resource/resource_bundle.h"
9 #include "ui/gfx/color_utils.h"
10 #include "ui/gfx/rect.h"
11 #include "ui/native_theme/native_theme.h"
12 #include "ui/views/bubble/bubble_frame_view.h"
13 #include "ui/views/focus/view_storage.h"
14 #include "ui/views/widget/widget.h"
15 #include "ui/views/widget/widget_observer.h"
16
17 #if defined(OS_WIN)
18 #include "ui/base/win/shell.h"
19 #endif
20
21 // The defaut margin between the content and the inside border, in pixels.
22 static const int kDefaultMargin = 6;
23
24 namespace views {
25
26 namespace {
27
28 // Create a widget to host the bubble.
CreateBubbleWidget(BubbleDelegateView * bubble)29 Widget* CreateBubbleWidget(BubbleDelegateView* bubble) {
30 Widget* bubble_widget = new Widget();
31 Widget::InitParams bubble_params(Widget::InitParams::TYPE_BUBBLE);
32 bubble_params.delegate = bubble;
33 bubble_params.opacity = Widget::InitParams::TRANSLUCENT_WINDOW;
34 bubble_params.accept_events = bubble->accept_events();
35 if (bubble->parent_window())
36 bubble_params.parent = bubble->parent_window();
37 else if (bubble->anchor_widget())
38 bubble_params.parent = bubble->anchor_widget()->GetNativeView();
39 bubble_params.activatable = bubble->CanActivate() ?
40 Widget::InitParams::ACTIVATABLE_YES : Widget::InitParams::ACTIVATABLE_NO;
41 bubble->OnBeforeBubbleWidgetInit(&bubble_params, bubble_widget);
42 bubble_widget->Init(bubble_params);
43 return bubble_widget;
44 }
45
46 } // namespace
47
BubbleDelegateView()48 BubbleDelegateView::BubbleDelegateView()
49 : close_on_esc_(true),
50 close_on_deactivate_(true),
51 anchor_view_storage_id_(ViewStorage::GetInstance()->CreateStorageID()),
52 anchor_widget_(NULL),
53 arrow_(BubbleBorder::TOP_LEFT),
54 shadow_(BubbleBorder::SMALL_SHADOW),
55 color_explicitly_set_(false),
56 margins_(kDefaultMargin, kDefaultMargin, kDefaultMargin, kDefaultMargin),
57 accept_events_(true),
58 border_accepts_events_(true),
59 adjust_if_offscreen_(true),
60 parent_window_(NULL) {
61 AddAccelerator(ui::Accelerator(ui::VKEY_ESCAPE, ui::EF_NONE));
62 UpdateColorsFromTheme(GetNativeTheme());
63 }
64
BubbleDelegateView(View * anchor_view,BubbleBorder::Arrow arrow)65 BubbleDelegateView::BubbleDelegateView(
66 View* anchor_view,
67 BubbleBorder::Arrow arrow)
68 : close_on_esc_(true),
69 close_on_deactivate_(true),
70 anchor_view_storage_id_(ViewStorage::GetInstance()->CreateStorageID()),
71 anchor_widget_(NULL),
72 arrow_(arrow),
73 shadow_(BubbleBorder::SMALL_SHADOW),
74 color_explicitly_set_(false),
75 margins_(kDefaultMargin, kDefaultMargin, kDefaultMargin, kDefaultMargin),
76 accept_events_(true),
77 border_accepts_events_(true),
78 adjust_if_offscreen_(true),
79 parent_window_(NULL) {
80 SetAnchorView(anchor_view);
81 AddAccelerator(ui::Accelerator(ui::VKEY_ESCAPE, ui::EF_NONE));
82 UpdateColorsFromTheme(GetNativeTheme());
83 }
84
~BubbleDelegateView()85 BubbleDelegateView::~BubbleDelegateView() {
86 if (GetWidget())
87 GetWidget()->RemoveObserver(this);
88 SetLayoutManager(NULL);
89 SetAnchorView(NULL);
90 }
91
92 // static
CreateBubble(BubbleDelegateView * bubble_delegate)93 Widget* BubbleDelegateView::CreateBubble(BubbleDelegateView* bubble_delegate) {
94 bubble_delegate->Init();
95 // Get the latest anchor widget from the anchor view at bubble creation time.
96 bubble_delegate->SetAnchorView(bubble_delegate->GetAnchorView());
97 Widget* bubble_widget = CreateBubbleWidget(bubble_delegate);
98
99 #if defined(OS_WIN)
100 // If glass is enabled, the bubble is allowed to extend outside the bounds of
101 // the parent frame and let DWM handle compositing. If not, then we don't
102 // want to allow the bubble to extend the frame because it will be clipped.
103 bubble_delegate->set_adjust_if_offscreen(ui::win::IsAeroGlassEnabled());
104 #elif defined(OS_LINUX) && !defined(OS_CHROMEOS)
105 // Linux clips bubble windows that extend outside their parent window bounds.
106 bubble_delegate->set_adjust_if_offscreen(false);
107 #endif
108
109 bubble_delegate->SizeToContents();
110 bubble_widget->AddObserver(bubble_delegate);
111 return bubble_widget;
112 }
113
AsBubbleDelegate()114 BubbleDelegateView* BubbleDelegateView::AsBubbleDelegate() {
115 return this;
116 }
117
ShouldShowCloseButton() const118 bool BubbleDelegateView::ShouldShowCloseButton() const {
119 return false;
120 }
121
GetContentsView()122 View* BubbleDelegateView::GetContentsView() {
123 return this;
124 }
125
CreateNonClientFrameView(Widget * widget)126 NonClientFrameView* BubbleDelegateView::CreateNonClientFrameView(
127 Widget* widget) {
128 BubbleFrameView* frame = new BubbleFrameView(margins());
129 // Note: In CreateBubble, the call to SizeToContents() will cause
130 // the relayout that this call requires.
131 frame->SetTitleFontList(GetTitleFontList());
132 BubbleBorder::Arrow adjusted_arrow = arrow();
133 if (base::i18n::IsRTL())
134 adjusted_arrow = BubbleBorder::horizontal_mirror(adjusted_arrow);
135 frame->SetBubbleBorder(scoped_ptr<BubbleBorder>(
136 new BubbleBorder(adjusted_arrow, shadow(), color())));
137 return frame;
138 }
139
GetAccessibleState(ui::AXViewState * state)140 void BubbleDelegateView::GetAccessibleState(ui::AXViewState* state) {
141 state->role = ui::AX_ROLE_DIALOG;
142 }
143
OnWidgetDestroying(Widget * widget)144 void BubbleDelegateView::OnWidgetDestroying(Widget* widget) {
145 if (anchor_widget() == widget)
146 SetAnchorView(NULL);
147 }
148
OnWidgetVisibilityChanging(Widget * widget,bool visible)149 void BubbleDelegateView::OnWidgetVisibilityChanging(Widget* widget,
150 bool visible) {
151 #if defined(OS_WIN)
152 // On Windows we need to handle this before the bubble is visible or hidden.
153 // Please see the comment on the OnWidgetVisibilityChanging function. On
154 // other platforms it is fine to handle it after the bubble is shown/hidden.
155 HandleVisibilityChanged(widget, visible);
156 #endif
157 }
158
OnWidgetVisibilityChanged(Widget * widget,bool visible)159 void BubbleDelegateView::OnWidgetVisibilityChanged(Widget* widget,
160 bool visible) {
161 #if !defined(OS_WIN)
162 HandleVisibilityChanged(widget, visible);
163 #endif
164 }
165
OnWidgetActivationChanged(Widget * widget,bool active)166 void BubbleDelegateView::OnWidgetActivationChanged(Widget* widget,
167 bool active) {
168 if (close_on_deactivate() && widget == GetWidget() && !active)
169 GetWidget()->Close();
170 }
171
OnWidgetBoundsChanged(Widget * widget,const gfx::Rect & new_bounds)172 void BubbleDelegateView::OnWidgetBoundsChanged(Widget* widget,
173 const gfx::Rect& new_bounds) {
174 if (anchor_widget() == widget)
175 SizeToContents();
176 }
177
GetAnchorView() const178 View* BubbleDelegateView::GetAnchorView() const {
179 return ViewStorage::GetInstance()->RetrieveView(anchor_view_storage_id_);
180 }
181
GetAnchorRect() const182 gfx::Rect BubbleDelegateView::GetAnchorRect() const {
183 if (!GetAnchorView())
184 return anchor_rect_;
185
186 anchor_rect_ = GetAnchorView()->GetBoundsInScreen();
187 anchor_rect_.Inset(anchor_view_insets_);
188 return anchor_rect_;
189 }
190
OnBeforeBubbleWidgetInit(Widget::InitParams * params,Widget * widget) const191 void BubbleDelegateView::OnBeforeBubbleWidgetInit(Widget::InitParams* params,
192 Widget* widget) const {
193 }
194
SetAlignment(BubbleBorder::BubbleAlignment alignment)195 void BubbleDelegateView::SetAlignment(BubbleBorder::BubbleAlignment alignment) {
196 GetBubbleFrameView()->bubble_border()->set_alignment(alignment);
197 SizeToContents();
198 }
199
SetArrowPaintType(BubbleBorder::ArrowPaintType paint_type)200 void BubbleDelegateView::SetArrowPaintType(
201 BubbleBorder::ArrowPaintType paint_type) {
202 GetBubbleFrameView()->bubble_border()->set_paint_arrow(paint_type);
203 SizeToContents();
204 }
205
OnAnchorBoundsChanged()206 void BubbleDelegateView::OnAnchorBoundsChanged() {
207 SizeToContents();
208 }
209
AcceleratorPressed(const ui::Accelerator & accelerator)210 bool BubbleDelegateView::AcceleratorPressed(
211 const ui::Accelerator& accelerator) {
212 if (!close_on_esc() || accelerator.key_code() != ui::VKEY_ESCAPE)
213 return false;
214 GetWidget()->Close();
215 return true;
216 }
217
OnNativeThemeChanged(const ui::NativeTheme * theme)218 void BubbleDelegateView::OnNativeThemeChanged(const ui::NativeTheme* theme) {
219 UpdateColorsFromTheme(theme);
220 }
221
Init()222 void BubbleDelegateView::Init() {}
223
SetAnchorView(View * anchor_view)224 void BubbleDelegateView::SetAnchorView(View* anchor_view) {
225 // When the anchor view gets set the associated anchor widget might
226 // change as well.
227 if (!anchor_view || anchor_widget() != anchor_view->GetWidget()) {
228 if (anchor_widget()) {
229 anchor_widget_->RemoveObserver(this);
230 anchor_widget_ = NULL;
231 }
232 if (anchor_view) {
233 anchor_widget_ = anchor_view->GetWidget();
234 if (anchor_widget_)
235 anchor_widget_->AddObserver(this);
236 }
237 }
238
239 // Remove the old storage item and set the new (if there is one).
240 ViewStorage* view_storage = ViewStorage::GetInstance();
241 if (view_storage->RetrieveView(anchor_view_storage_id_))
242 view_storage->RemoveView(anchor_view_storage_id_);
243 if (anchor_view)
244 view_storage->StoreView(anchor_view_storage_id_, anchor_view);
245
246 // Do not update anchoring for NULL views; this could indicate that our
247 // NativeWindow is being destroyed, so it would be dangerous for us to update
248 // our anchor bounds at that point. (It's safe to skip this, since if we were
249 // to update the bounds when |anchor_view| is NULL, the bubble won't move.)
250 if (anchor_view && GetWidget())
251 OnAnchorBoundsChanged();
252 }
253
SetAnchorRect(const gfx::Rect & rect)254 void BubbleDelegateView::SetAnchorRect(const gfx::Rect& rect) {
255 anchor_rect_ = rect;
256 if (GetWidget())
257 OnAnchorBoundsChanged();
258 }
259
SizeToContents()260 void BubbleDelegateView::SizeToContents() {
261 GetWidget()->SetBounds(GetBubbleBounds());
262 }
263
GetBubbleFrameView() const264 BubbleFrameView* BubbleDelegateView::GetBubbleFrameView() const {
265 const NonClientView* view =
266 GetWidget() ? GetWidget()->non_client_view() : NULL;
267 return view ? static_cast<BubbleFrameView*>(view->frame_view()) : NULL;
268 }
269
GetBubbleBounds()270 gfx::Rect BubbleDelegateView::GetBubbleBounds() {
271 // The argument rect has its origin at the bubble's arrow anchor point;
272 // its size is the preferred size of the bubble's client view (this view).
273 bool anchor_minimized = anchor_widget() && anchor_widget()->IsMinimized();
274 return GetBubbleFrameView()->GetUpdatedWindowBounds(GetAnchorRect(),
275 GetPreferredSize(), adjust_if_offscreen_ && !anchor_minimized);
276 }
277
GetTitleFontList() const278 const gfx::FontList& BubbleDelegateView::GetTitleFontList() const {
279 ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
280 return rb.GetFontList(ui::ResourceBundle::MediumFont);
281 }
282
283
UpdateColorsFromTheme(const ui::NativeTheme * theme)284 void BubbleDelegateView::UpdateColorsFromTheme(const ui::NativeTheme* theme) {
285 if (!color_explicitly_set_)
286 color_ = theme->GetSystemColor(ui::NativeTheme::kColorId_DialogBackground);
287 set_background(Background::CreateSolidBackground(color()));
288 BubbleFrameView* frame_view = GetBubbleFrameView();
289 if (frame_view)
290 frame_view->bubble_border()->set_background_color(color());
291 }
292
HandleVisibilityChanged(Widget * widget,bool visible)293 void BubbleDelegateView::HandleVisibilityChanged(Widget* widget, bool visible) {
294 if (widget == GetWidget() && anchor_widget() &&
295 anchor_widget()->GetTopLevelWidget()) {
296 if (visible)
297 anchor_widget()->GetTopLevelWidget()->DisableInactiveRendering();
298 else
299 anchor_widget()->GetTopLevelWidget()->EnableInactiveRendering();
300 }
301 }
302
303 } // namespace views
304