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1 // Copyright 2013 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 "chrome/browser/ui/views/toolbar/browser_action_view.h"
6 
7 #include "base/strings/utf_string_conversions.h"
8 #include "chrome/browser/chrome_notification_types.h"
9 #include "chrome/browser/extensions/api/commands/command_service.h"
10 #include "chrome/browser/extensions/extension_action.h"
11 #include "chrome/browser/extensions/extension_action_manager.h"
12 #include "chrome/browser/extensions/extension_context_menu_model.h"
13 #include "chrome/browser/extensions/extension_service.h"
14 #include "chrome/browser/profiles/profile.h"
15 #include "chrome/browser/themes/theme_service.h"
16 #include "chrome/browser/themes/theme_service_factory.h"
17 #include "chrome/browser/ui/browser.h"
18 #include "chrome/browser/ui/view_ids.h"
19 #include "chrome/browser/ui/views/toolbar/browser_actions_container.h"
20 #include "chrome/browser/ui/views/toolbar/toolbar_view.h"
21 #include "extensions/common/extension.h"
22 #include "extensions/common/manifest_constants.h"
23 #include "grit/generated_resources.h"
24 #include "grit/theme_resources.h"
25 #include "ui/accessibility/ax_view_state.h"
26 #include "ui/base/l10n/l10n_util.h"
27 #include "ui/base/resource/resource_bundle.h"
28 #include "ui/events/event.h"
29 #include "ui/gfx/image/image_skia.h"
30 #include "ui/gfx/image/image_skia_operations.h"
31 #include "ui/gfx/image/image_skia_source.h"
32 #include "ui/views/controls/menu/menu_item_view.h"
33 #include "ui/views/controls/menu/menu_runner.h"
34 
35 using extensions::Extension;
36 
37 ////////////////////////////////////////////////////////////////////////////////
38 // BrowserActionView
39 
BrowserActionView(const Extension * extension,Browser * browser,BrowserActionView::Delegate * delegate)40 BrowserActionView::BrowserActionView(const Extension* extension,
41                                      Browser* browser,
42                                      BrowserActionView::Delegate* delegate)
43     : browser_(browser),
44       delegate_(delegate),
45       button_(NULL),
46       extension_(extension) {
47   set_id(VIEW_ID_BROWSER_ACTION);
48   button_ = new BrowserActionButton(extension_, browser_, delegate_);
49   button_->set_drag_controller(delegate_);
50   button_->set_owned_by_client();
51   AddChildView(button_);
52   button_->UpdateState();
53 }
54 
~BrowserActionView()55 BrowserActionView::~BrowserActionView() {
56   button_->Destroy();
57 }
58 
GetIconWithBadge()59 gfx::ImageSkia BrowserActionView::GetIconWithBadge() {
60   return button_->GetIconWithBadge();
61 }
62 
Layout()63 void BrowserActionView::Layout() {
64   button_->SetBounds(0, y(), width(), height());
65 }
66 
GetAccessibleState(ui::AXViewState * state)67 void BrowserActionView::GetAccessibleState(ui::AXViewState* state) {
68   state->name = l10n_util::GetStringUTF16(
69       IDS_ACCNAME_EXTENSIONS_BROWSER_ACTION);
70   state->role = ui::AX_ROLE_GROUP;
71 }
72 
GetPreferredSize() const73 gfx::Size BrowserActionView::GetPreferredSize() const {
74   return gfx::Size(BrowserActionsContainer::IconWidth(false),
75                    BrowserActionsContainer::IconHeight());
76 }
77 
PaintChildren(gfx::Canvas * canvas,const views::CullSet & cull_set)78 void BrowserActionView::PaintChildren(gfx::Canvas* canvas,
79                                       const views::CullSet& cull_set) {
80   View::PaintChildren(canvas, cull_set);
81   ExtensionAction* action = button()->browser_action();
82   int tab_id = delegate_->GetCurrentTabId();
83   if (tab_id >= 0)
84     action->PaintBadge(canvas, GetLocalBounds(), tab_id);
85 }
86 
87 ////////////////////////////////////////////////////////////////////////////////
88 // BrowserActionButton
89 
BrowserActionButton(const Extension * extension,Browser * browser,BrowserActionView::Delegate * delegate)90 BrowserActionButton::BrowserActionButton(const Extension* extension,
91                                          Browser* browser,
92                                          BrowserActionView::Delegate* delegate)
93     : MenuButton(this, base::string16(), NULL, false),
94       browser_(browser),
95       browser_action_(
96           extensions::ExtensionActionManager::Get(browser->profile())->
97           GetBrowserAction(*extension)),
98       extension_(extension),
99       icon_factory_(browser->profile(), extension, browser_action_, this),
100       delegate_(delegate),
101       context_menu_(NULL),
102       called_registered_extension_command_(false),
103       icon_observer_(NULL) {
104   SetBorder(views::Border::NullBorder());
105   SetHorizontalAlignment(gfx::ALIGN_CENTER);
106   set_context_menu_controller(this);
107 
108   // No UpdateState() here because View hierarchy not setup yet. Our parent
109   // should call UpdateState() after creation.
110 
111   content::NotificationSource notification_source =
112       content::Source<Profile>(browser_->profile()->GetOriginalProfile());
113   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_BROWSER_ACTION_UPDATED,
114                  content::Source<ExtensionAction>(browser_action_));
115   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_COMMAND_ADDED,
116                  notification_source);
117   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_COMMAND_REMOVED,
118                  notification_source);
119 
120   // We also listen for browser theme changes on linux because a switch from or
121   // to GTK requires that we regrab our browser action images.
122   registrar_.Add(
123       this,
124       chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
125       content::Source<ThemeService>(
126           ThemeServiceFactory::GetForProfile(browser->profile())));
127 }
128 
Destroy()129 void BrowserActionButton::Destroy() {
130   MaybeUnregisterExtensionCommand(false);
131 
132   if (context_menu_) {
133     context_menu_->Cancel();
134     base::MessageLoop::current()->DeleteSoon(FROM_HERE, this);
135   } else {
136     delete this;
137   }
138 }
139 
ViewHierarchyChanged(const ViewHierarchyChangedDetails & details)140 void BrowserActionButton::ViewHierarchyChanged(
141     const ViewHierarchyChangedDetails& details) {
142   if (details.is_add && !called_registered_extension_command_ &&
143       GetFocusManager()) {
144     MaybeRegisterExtensionCommand();
145     called_registered_extension_command_ = true;
146   }
147 
148   MenuButton::ViewHierarchyChanged(details);
149 }
150 
CanHandleAccelerators() const151 bool BrowserActionButton::CanHandleAccelerators() const {
152   // View::CanHandleAccelerators() checks to see if the view is visible before
153   // allowing it to process accelerators. This is not appropriate for browser
154   // actions buttons, which can be hidden inside the overflow area.
155   return true;
156 }
157 
GetAccessibleState(ui::AXViewState * state)158 void BrowserActionButton::GetAccessibleState(ui::AXViewState* state) {
159   views::MenuButton::GetAccessibleState(state);
160   state->role = ui::AX_ROLE_BUTTON;
161 }
162 
ButtonPressed(views::Button * sender,const ui::Event & event)163 void BrowserActionButton::ButtonPressed(views::Button* sender,
164                                         const ui::Event& event) {
165   delegate_->OnBrowserActionExecuted(this);
166 }
167 
ShowContextMenuForView(View * source,const gfx::Point & point,ui::MenuSourceType source_type)168 void BrowserActionButton::ShowContextMenuForView(
169     View* source,
170     const gfx::Point& point,
171     ui::MenuSourceType source_type) {
172   if (!extension()->ShowConfigureContextMenus())
173     return;
174 
175   SetButtonPushed();
176 
177   // Reconstructs the menu every time because the menu's contents are dynamic.
178   scoped_refptr<ExtensionContextMenuModel> context_menu_contents_(
179       new ExtensionContextMenuModel(extension(), browser_, delegate_));
180   menu_runner_.reset(new views::MenuRunner(context_menu_contents_.get()));
181 
182   context_menu_ = menu_runner_->GetMenu();
183   gfx::Point screen_loc;
184   views::View::ConvertPointToScreen(this, &screen_loc);
185   if (menu_runner_->RunMenuAt(
186           GetWidget(),
187           NULL,
188           gfx::Rect(screen_loc, size()),
189           views::MENU_ANCHOR_TOPLEFT,
190           source_type,
191           views::MenuRunner::HAS_MNEMONICS | views::MenuRunner::CONTEXT_MENU) ==
192       views::MenuRunner::MENU_DELETED) {
193     return;
194   }
195 
196   menu_runner_.reset();
197   SetButtonNotPushed();
198   context_menu_ = NULL;
199 }
200 
UpdateState()201 void BrowserActionButton::UpdateState() {
202   int tab_id = delegate_->GetCurrentTabId();
203   if (tab_id < 0)
204     return;
205 
206   if (!IsEnabled(tab_id)) {
207     SetState(views::CustomButton::STATE_DISABLED);
208   } else {
209     SetState(menu_visible_ ?
210              views::CustomButton::STATE_PRESSED :
211              views::CustomButton::STATE_NORMAL);
212   }
213 
214   gfx::ImageSkia icon = *icon_factory_.GetIcon(tab_id).ToImageSkia();
215 
216   if (!icon.isNull()) {
217     if (!browser_action()->GetIsVisible(tab_id))
218       icon = gfx::ImageSkiaOperations::CreateTransparentImage(icon, .25);
219 
220     ThemeService* theme =
221         ThemeServiceFactory::GetForProfile(browser_->profile());
222 
223     gfx::ImageSkia bg = *theme->GetImageSkiaNamed(IDR_BROWSER_ACTION);
224     SetImage(views::Button::STATE_NORMAL,
225              gfx::ImageSkiaOperations::CreateSuperimposedImage(bg, icon));
226 
227     gfx::ImageSkia bg_h = *theme->GetImageSkiaNamed(IDR_BROWSER_ACTION_H);
228     SetImage(views::Button::STATE_HOVERED,
229              gfx::ImageSkiaOperations::CreateSuperimposedImage(bg_h, icon));
230 
231     gfx::ImageSkia bg_p = *theme->GetImageSkiaNamed(IDR_BROWSER_ACTION_P);
232     SetImage(views::Button::STATE_PRESSED,
233              gfx::ImageSkiaOperations::CreateSuperimposedImage(bg_p, icon));
234   }
235 
236   // If the browser action name is empty, show the extension name instead.
237   std::string title = browser_action()->GetTitle(tab_id);
238   base::string16 name =
239       base::UTF8ToUTF16(title.empty() ? extension()->name() : title);
240   SetTooltipText(name);
241   SetAccessibleName(name);
242 
243   parent()->SchedulePaint();
244 }
245 
IsPopup()246 bool BrowserActionButton::IsPopup() {
247   int tab_id = delegate_->GetCurrentTabId();
248   return (tab_id < 0) ? false : browser_action_->HasPopup(tab_id);
249 }
250 
GetPopupUrl()251 GURL BrowserActionButton::GetPopupUrl() {
252   int tab_id = delegate_->GetCurrentTabId();
253   return (tab_id < 0) ? GURL() : browser_action_->GetPopupUrl(tab_id);
254 }
255 
Observe(int type,const content::NotificationSource & source,const content::NotificationDetails & details)256 void BrowserActionButton::Observe(int type,
257                                   const content::NotificationSource& source,
258                                   const content::NotificationDetails& details) {
259   switch (type) {
260     case chrome::NOTIFICATION_EXTENSION_BROWSER_ACTION_UPDATED:
261       UpdateState();
262       // The browser action may have become visible/hidden so we need to make
263       // sure the state gets updated.
264       delegate_->OnBrowserActionVisibilityChanged();
265       break;
266     case chrome::NOTIFICATION_EXTENSION_COMMAND_ADDED:
267     case chrome::NOTIFICATION_EXTENSION_COMMAND_REMOVED: {
268       std::pair<const std::string, const std::string>* payload =
269           content::Details<std::pair<const std::string, const std::string> >(
270               details).ptr();
271       if (extension_->id() == payload->first &&
272           payload->second ==
273               extensions::manifest_values::kBrowserActionCommandEvent) {
274         if (type == chrome::NOTIFICATION_EXTENSION_COMMAND_ADDED)
275           MaybeRegisterExtensionCommand();
276         else
277           MaybeUnregisterExtensionCommand(true);
278       }
279       break;
280     }
281     case chrome::NOTIFICATION_BROWSER_THEME_CHANGED:
282       UpdateState();
283       break;
284     default:
285       NOTREACHED();
286       break;
287   }
288 }
289 
OnIconUpdated()290 void BrowserActionButton::OnIconUpdated() {
291   UpdateState();
292   if (icon_observer_)
293     icon_observer_->OnIconUpdated(GetIconWithBadge());
294 }
295 
Activate()296 bool BrowserActionButton::Activate() {
297   if (!IsPopup())
298     return true;
299 
300   delegate_->OnBrowserActionExecuted(this);
301 
302   // TODO(erikkay): Run a nested modal loop while the mouse is down to
303   // enable menu-like drag-select behavior.
304 
305   // The return value of this method is returned via OnMousePressed.
306   // We need to return false here since we're handing off focus to another
307   // widget/view, and true will grab it right back and try to send events
308   // to us.
309   return false;
310 }
311 
OnMousePressed(const ui::MouseEvent & event)312 bool BrowserActionButton::OnMousePressed(const ui::MouseEvent& event) {
313   if (!event.IsRightMouseButton()) {
314     return IsPopup() ? MenuButton::OnMousePressed(event) :
315                        LabelButton::OnMousePressed(event);
316   }
317 
318   if (!views::View::ShouldShowContextMenuOnMousePress()) {
319     // See comments in MenuButton::Activate() as to why this is needed.
320     SetMouseHandler(NULL);
321 
322     ShowContextMenu(gfx::Point(), ui::MENU_SOURCE_MOUSE);
323   }
324   return false;
325 }
326 
OnMouseReleased(const ui::MouseEvent & event)327 void BrowserActionButton::OnMouseReleased(const ui::MouseEvent& event) {
328   if (IsPopup() || context_menu_) {
329     // TODO(erikkay) this never actually gets called (probably because of the
330     // loss of focus).
331     MenuButton::OnMouseReleased(event);
332   } else {
333     LabelButton::OnMouseReleased(event);
334   }
335 }
336 
OnMouseExited(const ui::MouseEvent & event)337 void BrowserActionButton::OnMouseExited(const ui::MouseEvent& event) {
338   if (IsPopup() || context_menu_)
339     MenuButton::OnMouseExited(event);
340   else
341     LabelButton::OnMouseExited(event);
342 }
343 
OnKeyReleased(const ui::KeyEvent & event)344 bool BrowserActionButton::OnKeyReleased(const ui::KeyEvent& event) {
345   return IsPopup() ? MenuButton::OnKeyReleased(event) :
346                      LabelButton::OnKeyReleased(event);
347 }
348 
OnGestureEvent(ui::GestureEvent * event)349 void BrowserActionButton::OnGestureEvent(ui::GestureEvent* event) {
350   if (IsPopup())
351     MenuButton::OnGestureEvent(event);
352   else
353     LabelButton::OnGestureEvent(event);
354 }
355 
AcceleratorPressed(const ui::Accelerator & accelerator)356 bool BrowserActionButton::AcceleratorPressed(
357     const ui::Accelerator& accelerator) {
358   delegate_->OnBrowserActionExecuted(this);
359   return true;
360 }
361 
SetButtonPushed()362 void BrowserActionButton::SetButtonPushed() {
363   SetState(views::CustomButton::STATE_PRESSED);
364   menu_visible_ = true;
365 }
366 
SetButtonNotPushed()367 void BrowserActionButton::SetButtonNotPushed() {
368   SetState(views::CustomButton::STATE_NORMAL);
369   menu_visible_ = false;
370 }
371 
IsEnabled(int tab_id) const372 bool BrowserActionButton::IsEnabled(int tab_id) const {
373   return browser_action_->GetIsVisible(tab_id);
374 }
375 
GetIconWithBadge()376 gfx::ImageSkia BrowserActionButton::GetIconWithBadge() {
377   int tab_id = delegate_->GetCurrentTabId();
378   gfx::Size spacing(0, ToolbarView::kVertSpacing);
379   gfx::ImageSkia icon = *icon_factory_.GetIcon(tab_id).ToImageSkia();
380   if (!IsEnabled(tab_id))
381     icon = gfx::ImageSkiaOperations::CreateTransparentImage(icon, .25);
382   return browser_action_->GetIconWithBadge(icon, tab_id, spacing);
383 }
384 
GetIconForTest()385 gfx::ImageSkia BrowserActionButton::GetIconForTest() {
386   return GetImage(views::Button::STATE_NORMAL);
387 }
388 
~BrowserActionButton()389 BrowserActionButton::~BrowserActionButton() {
390 }
391 
MaybeRegisterExtensionCommand()392 void BrowserActionButton::MaybeRegisterExtensionCommand() {
393   extensions::CommandService* command_service =
394       extensions::CommandService::Get(browser_->profile());
395   extensions::Command browser_action_command;
396   if (command_service->GetBrowserActionCommand(
397           extension_->id(),
398           extensions::CommandService::ACTIVE_ONLY,
399           &browser_action_command,
400           NULL)) {
401     keybinding_.reset(new ui::Accelerator(
402         browser_action_command.accelerator()));
403     GetFocusManager()->RegisterAccelerator(
404         *keybinding_.get(), ui::AcceleratorManager::kHighPriority, this);
405   }
406 }
407 
MaybeUnregisterExtensionCommand(bool only_if_active)408 void BrowserActionButton::MaybeUnregisterExtensionCommand(bool only_if_active) {
409   if (!keybinding_.get() || !GetFocusManager())
410     return;
411 
412   extensions::CommandService* command_service =
413       extensions::CommandService::Get(browser_->profile());
414 
415   extensions::Command browser_action_command;
416   if (!only_if_active || !command_service->GetBrowserActionCommand(
417           extension_->id(),
418           extensions::CommandService::ACTIVE_ONLY,
419           &browser_action_command,
420           NULL)) {
421     GetFocusManager()->UnregisterAccelerator(*keybinding_.get(), this);
422     keybinding_.reset(NULL);
423   }
424 }
425