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[chromium-blink-merge.git] / chrome / browser / ui / cocoa / extensions / browser_actions_controller.mm
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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.
5 #import "chrome/browser/ui/cocoa/extensions/browser_actions_controller.h"
7 #include <string>
9 #include "base/strings/sys_string_conversions.h"
10 #include "chrome/browser/extensions/extension_message_bubble_controller.h"
11 #include "chrome/browser/ui/browser.h"
12 #include "chrome/browser/ui/browser_window.h"
13 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
14 #import "chrome/browser/ui/cocoa/extensions/browser_action_button.h"
15 #import "chrome/browser/ui/cocoa/extensions/browser_actions_container_view.h"
16 #import "chrome/browser/ui/cocoa/extensions/extension_message_bubble_bridge.h"
17 #import "chrome/browser/ui/cocoa/extensions/extension_popup_controller.h"
18 #import "chrome/browser/ui/cocoa/extensions/toolbar_actions_bar_bubble_mac.h"
19 #import "chrome/browser/ui/cocoa/image_button_cell.h"
20 #import "chrome/browser/ui/cocoa/menu_button.h"
21 #import "chrome/browser/ui/cocoa/toolbar/toolbar_controller.h"
22 #include "chrome/browser/ui/extensions/extension_toolbar_icon_surfacing_bubble_delegate.h"
23 #include "chrome/browser/ui/tabs/tab_strip_model.h"
24 #include "chrome/browser/ui/toolbar/toolbar_action_view_controller.h"
25 #include "chrome/browser/ui/toolbar/toolbar_actions_bar.h"
26 #include "chrome/browser/ui/toolbar/toolbar_actions_bar_delegate.h"
27 #include "grit/theme_resources.h"
28 #import "third_party/google_toolbox_for_mac/src/AppKit/GTMNSAnimation+Duration.h"
29 #include "ui/base/cocoa/appkit_utils.h"
31 NSString* const kBrowserActionVisibilityChangedNotification =
32     @"BrowserActionVisibilityChangedNotification";
34 namespace {
36 const CGFloat kAnimationDuration = 0.2;
38 const CGFloat kChevronWidth = 18;
40 // How far to inset from the bottom of the view to get the top border
41 // of the popup 2px below the bottom of the Omnibox.
42 const CGFloat kBrowserActionBubbleYOffset = 3.0;
44 }  // namespace
46 @interface BrowserActionsController(Private)
48 // Creates and adds a view for the given |action| at |index|.
49 - (void)addViewForAction:(ToolbarActionViewController*)action
50                withIndex:(NSUInteger)index;
52 // Removes the view for the given |action| from the ccontainer.
53 - (void)removeViewForAction:(ToolbarActionViewController*)action;
55 // Removes views for all actions.
56 - (void)removeAllViews;
58 // Redraws the BrowserActionsContainerView and updates the button order to match
59 // the order in the ToolbarActionsBar.
60 - (void)redraw;
62 // Resizes the container to the specified |width|, and animates according to
63 // the ToolbarActionsBar.
64 - (void)resizeContainerToWidth:(CGFloat)width;
66 // Sets the container to be either hidden or visible based on whether there are
67 // any actions to show.
68 // Returns whether the container is visible.
69 - (BOOL)updateContainerVisibility;
71 // During container resizing, buttons become more transparent as they are pushed
72 // off the screen. This method updates each button's opacity determined by the
73 // position of the button.
74 - (void)updateButtonOpacity;
76 // When the container is resizing, there's a chance that the buttons' frames
77 // need to be adjusted (for instance, if an action is added to the left, the
78 // frames of the actions to the right should gradually move right in the
79 // container). Adjust the frames accordingly.
80 - (void)updateButtonPositions;
82 // Returns the existing button associated with the given id; nil if it cannot be
83 // found.
84 - (BrowserActionButton*)buttonForId:(const std::string&)id;
86 // Returns the button at the given index. This is just a wrapper around
87 // [NSArray objectAtIndex:], since that technically defaults to returning ids
88 // (and can cause compile errors).
89 - (BrowserActionButton*)buttonAtIndex:(NSUInteger)index;
91 // Notification handlers for events registered by the class.
93 // Updates each button's opacity, the cursor rects and chevron position.
94 - (void)containerFrameChanged:(NSNotification*)notification;
96 // Hides the chevron and unhides every hidden button so that dragging the
97 // container out smoothly shows the Browser Action buttons.
98 - (void)containerDragStart:(NSNotification*)notification;
100 // Determines which buttons need to be hidden based on the new size, hides them
101 // and updates the chevron overflow menu. Also fires a notification to let the
102 // toolbar know that the drag has finished.
103 - (void)containerDragFinished:(NSNotification*)notification;
105 // Shows the toolbar info bubble, if it should be displayed.
106 - (void)containerMouseEntered:(NSNotification*)notification;
108 // Notifies the controlling ToolbarActionsBar that any running animation has
109 // ended.
110 - (void)containerAnimationEnded:(NSNotification*)notification;
112 // Processes a key event from the container.
113 - (void)containerKeyEvent:(NSNotification*)notification;
115 // Adjusts the position of the surrounding action buttons depending on where the
116 // button is within the container.
117 - (void)actionButtonDragging:(NSNotification*)notification;
119 // Updates the position of the Browser Actions within the container. This fires
120 // when _any_ Browser Action button is done dragging to keep all open windows in
121 // sync visually.
122 - (void)actionButtonDragFinished:(NSNotification*)notification;
124 // Returns the frame that the button with the given |index| should have.
125 - (NSRect)frameForIndex:(NSUInteger)index;
127 // Returns the popup point for the given |view| with |bounds|.
128 - (NSPoint)popupPointForView:(NSView*)view
129                   withBounds:(NSRect)bounds;
131 // Moves the given button both visually and within the toolbar model to the
132 // specified index.
133 - (void)moveButton:(BrowserActionButton*)button
134            toIndex:(NSUInteger)index;
136 // Handles clicks for BrowserActionButtons.
137 - (BOOL)browserActionClicked:(BrowserActionButton*)button;
139 // The reason |frame| is specified in these chevron functions is because the
140 // container may be animating and the end frame of the animation should be
141 // passed instead of the current frame (which may be off and cause the chevron
142 // to jump at the end of its animation).
144 // Shows the overflow chevron button depending on whether there are any hidden
145 // extensions within the frame given.
146 - (void)showChevronIfNecessaryInFrame:(NSRect)frame;
148 // Moves the chevron to its correct position within |frame|.
149 - (void)updateChevronPositionInFrame:(NSRect)frame;
151 // Shows or hides the chevron in the given |frame|.
152 - (void)setChevronHidden:(BOOL)hidden
153                  inFrame:(NSRect)frame;
155 // Handles when a menu item within the chevron overflow menu is selected.
156 - (void)chevronItemSelected:(id)menuItem;
158 // Updates the container's grippy cursor based on the number of hidden buttons.
159 - (void)updateGrippyCursors;
161 // Returns the associated ToolbarController.
162 - (ToolbarController*)toolbarController;
164 // Creates a message bubble anchored to the given |anchorAction|, or the wrench
165 // menu if no |anchorAction| is null.
166 - (ToolbarActionsBarBubbleMac*)createMessageBubble:
167     (scoped_ptr<ToolbarActionsBarBubbleDelegate>)delegate
168     anchorToSelf:(BOOL)anchorToSelf;
170 // Called when the window for the active bubble is closing, and sets the active
171 // bubble to nil.
172 - (void)bubbleWindowClosing:(NSNotification*)notification;
174 // Sets the current focused view. Should only be used for the overflow
175 // container.
176 - (void)setFocusedViewIndex:(NSInteger)index;
178 @end
180 namespace {
182 // A bridge between the ToolbarActionsBar and the BrowserActionsController.
183 class ToolbarActionsBarBridge : public ToolbarActionsBarDelegate {
184  public:
185   explicit ToolbarActionsBarBridge(BrowserActionsController* controller);
186   ~ToolbarActionsBarBridge() override;
188   BrowserActionsController* controller_for_test() { return controller_; }
190  private:
191   // ToolbarActionsBarDelegate:
192   void AddViewForAction(ToolbarActionViewController* action,
193                         size_t index) override;
194   void RemoveViewForAction(ToolbarActionViewController* action) override;
195   void RemoveAllViews() override;
196   void Redraw(bool order_changed) override;
197   void ResizeAndAnimate(gfx::Tween::Type tween_type,
198                         int target_width,
199                         bool suppress_chevron) override;
200   void SetChevronVisibility(bool chevron_visible) override;
201   int GetWidth() const override;
202   bool IsAnimating() const override;
203   void StopAnimating() override;
204   int GetChevronWidth() const override;
205   void ShowExtensionMessageBubble(
206       scoped_ptr<extensions::ExtensionMessageBubbleController> controller,
207       ToolbarActionViewController* anchor_action) override;
209   // The owning BrowserActionsController; weak.
210   BrowserActionsController* controller_;
212   DISALLOW_COPY_AND_ASSIGN(ToolbarActionsBarBridge);
215 ToolbarActionsBarBridge::ToolbarActionsBarBridge(
216     BrowserActionsController* controller)
217     : controller_(controller) {
220 ToolbarActionsBarBridge::~ToolbarActionsBarBridge() {
223 void ToolbarActionsBarBridge::AddViewForAction(
224     ToolbarActionViewController* action,
225     size_t index) {
226   [controller_ addViewForAction:action
227                       withIndex:index];
230 void ToolbarActionsBarBridge::RemoveViewForAction(
231     ToolbarActionViewController* action) {
232   [controller_ removeViewForAction:action];
235 void ToolbarActionsBarBridge::RemoveAllViews() {
236   [controller_ removeAllViews];
239 void ToolbarActionsBarBridge::Redraw(bool order_changed) {
240   [controller_ redraw];
243 void ToolbarActionsBarBridge::ResizeAndAnimate(gfx::Tween::Type tween_type,
244                                                int target_width,
245                                                bool suppress_chevron) {
246   [controller_ resizeContainerToWidth:target_width];
249 void ToolbarActionsBarBridge::SetChevronVisibility(bool chevron_visible) {
250   [controller_ setChevronHidden:!chevron_visible
251                         inFrame:[[controller_ containerView] frame]];
254 int ToolbarActionsBarBridge::GetWidth() const {
255   return NSWidth([[controller_ containerView] frame]);
258 bool ToolbarActionsBarBridge::IsAnimating() const {
259   return [[controller_ containerView] isAnimating];
262 void ToolbarActionsBarBridge::StopAnimating() {
263   // Unfortunately, animating the browser actions container affects neighboring
264   // views (like the omnibox), which could also be animating. Because of this,
265   // instead of just ending the animation, the cleanest way to terminate is to
266   // "animate" to the current frame.
267   [controller_ resizeContainerToWidth:
268       NSWidth([[controller_ containerView] frame])];
271 int ToolbarActionsBarBridge::GetChevronWidth() const {
272   return kChevronWidth;
275 void ToolbarActionsBarBridge::ShowExtensionMessageBubble(
276     scoped_ptr<extensions::ExtensionMessageBubbleController> controller,
277     ToolbarActionViewController* anchor_action) {
278   // This goop is a by-product of needing to wire together abstract classes,
279   // C++/Cocoa bridges, and ExtensionMessageBubbleController's somewhat strange
280   // Show() interface. It's ugly, but it's pretty confined, so it's probably
281   // okay (but if we ever need to expand, it might need to be reconsidered).
282   scoped_ptr<ExtensionMessageBubbleBridge> bridge(
283       new ExtensionMessageBubbleBridge(controller.Pass(),
284                                        anchor_action != nullptr));
285   ExtensionMessageBubbleBridge* weak_bridge = bridge.get();
286   ToolbarActionsBarBubbleMac* bubble =
287       [controller_ createMessageBubble:bridge.Pass()
288                           anchorToSelf:anchor_action != nil];
289   weak_bridge->SetBubble(bubble);
290   weak_bridge->controller()->Show(weak_bridge);
293 }  // namespace
295 @implementation BrowserActionsController
297 @synthesize containerView = containerView_;
298 @synthesize browser = browser_;
299 @synthesize isOverflow = isOverflow_;
300 @synthesize activeBubble = activeBubble_;
302 #pragma mark -
303 #pragma mark Public Methods
305 - (id)initWithBrowser:(Browser*)browser
306         containerView:(BrowserActionsContainerView*)container
307        mainController:(BrowserActionsController*)mainController {
308   DCHECK(browser && container);
310   if ((self = [super init])) {
311     browser_ = browser;
312     isOverflow_ = mainController != nil;
314     toolbarActionsBarBridge_.reset(new ToolbarActionsBarBridge(self));
315     ToolbarActionsBar* mainBar =
316         mainController ? [mainController toolbarActionsBar] : nullptr;
317     toolbarActionsBar_.reset(
318         new ToolbarActionsBar(toolbarActionsBarBridge_.get(),
319                               browser_,
320                               mainBar));
322     containerView_ = container;
323     [containerView_ setPostsFrameChangedNotifications:YES];
324     [[NSNotificationCenter defaultCenter]
325         addObserver:self
326            selector:@selector(containerFrameChanged:)
327                name:NSViewFrameDidChangeNotification
328              object:containerView_];
329     [[NSNotificationCenter defaultCenter]
330         addObserver:self
331            selector:@selector(containerDragStart:)
332                name:kBrowserActionGrippyDragStartedNotification
333              object:containerView_];
334     [[NSNotificationCenter defaultCenter]
335         addObserver:self
336            selector:@selector(containerDragFinished:)
337                name:kBrowserActionGrippyDragFinishedNotification
338              object:containerView_];
339     [[NSNotificationCenter defaultCenter]
340         addObserver:self
341            selector:@selector(containerAnimationEnded:)
342                name:kBrowserActionsContainerAnimationEnded
343              object:containerView_];
344     [[NSNotificationCenter defaultCenter]
345         addObserver:self
346            selector:@selector(containerKeyEvent:)
347                name:kBrowserActionsContainerReceivedKeyEvent
348              object:containerView_];
349     // Listen for a finished drag from any button to make sure each open window
350     // stays in sync.
351     [[NSNotificationCenter defaultCenter]
352       addObserver:self
353          selector:@selector(actionButtonDragFinished:)
354              name:kBrowserActionButtonDragEndNotification
355            object:nil];
357     suppressChevron_ = NO;
358     if (toolbarActionsBar_->platform_settings().chevron_enabled) {
359       chevronAnimation_.reset([[NSViewAnimation alloc] init]);
360       [chevronAnimation_ gtm_setDuration:kAnimationDuration
361                                eventMask:NSLeftMouseUpMask];
362       [chevronAnimation_ setAnimationBlockingMode:NSAnimationNonblocking];
363     }
365     if (isOverflow_)
366       toolbarActionsBar_->SetOverflowRowWidth(NSWidth([containerView_ frame]));
368     buttons_.reset([[NSMutableArray alloc] init]);
369     toolbarActionsBar_->CreateActions();
370     [self showChevronIfNecessaryInFrame:[containerView_ frame]];
371     [self updateGrippyCursors];
372     [container setIsOverflow:isOverflow_];
373     if (ExtensionToolbarIconSurfacingBubbleDelegate::ShouldShowForProfile(
374             browser_->profile())) {
375       [containerView_ setTrackingEnabled:YES];
376       [[NSNotificationCenter defaultCenter]
377           addObserver:self
378              selector:@selector(containerMouseEntered:)
379                  name:kBrowserActionsContainerMouseEntered
380                object:containerView_];
381     }
383     focusedViewIndex_ = -1;
384   }
386   return self;
389 - (void)dealloc {
390   [self browserWillBeDestroyed];
391   [super dealloc];
394 - (void)browserWillBeDestroyed {
395   [overflowMenu_ setDelegate:nil];
396   // Explicitly destroy the ToolbarActionsBar so all buttons get removed with a
397   // valid BrowserActionsController, and so we can verify state before
398   // destruction.
399   if (toolbarActionsBar_.get()) {
400     toolbarActionsBar_->DeleteActions();
401     toolbarActionsBar_.reset();
402   }
403   DCHECK_EQ(0u, [buttons_ count]);
404   [[NSNotificationCenter defaultCenter] removeObserver:self];
405   browser_ = nullptr;
408 - (void)update {
409   toolbarActionsBar_->Update();
412 - (NSUInteger)buttonCount {
413   return [buttons_ count];
416 - (NSUInteger)visibleButtonCount {
417   NSUInteger visibleCount = 0;
418   for (BrowserActionButton* button in buttons_.get())
419     visibleCount += [button superview] == containerView_;
420   return visibleCount;
423 - (gfx::Size)preferredSize {
424   return toolbarActionsBar_->GetPreferredSize();
427 - (NSPoint)popupPointForId:(const std::string&)id {
428   BrowserActionButton* button = [self buttonForId:id];
429   if (!button)
430     return NSZeroPoint;
432   NSRect bounds;
433   NSView* referenceButton = button;
434   if ([button superview] != containerView_ || isOverflow_) {
435     referenceButton = toolbarActionsBar_->platform_settings().chevron_enabled ?
436          chevronMenuButton_.get() : [[self toolbarController] wrenchButton];
437     bounds = [referenceButton bounds];
438   } else {
439     bounds = [button convertRect:[button frameAfterAnimation]
440                         fromView:[button superview]];
441   }
443   return [self popupPointForView:referenceButton withBounds:bounds];
446 - (BOOL)chevronIsHidden {
447   if (!chevronMenuButton_.get())
448     return YES;
450   if (![chevronAnimation_ isAnimating])
451     return [chevronMenuButton_ isHidden];
453   DCHECK([[chevronAnimation_ viewAnimations] count] > 0);
455   // The chevron is animating in or out. Determine which one and have the return
456   // value reflect where the animation is headed.
457   NSString* effect = [[[chevronAnimation_ viewAnimations] objectAtIndex:0]
458       valueForKey:NSViewAnimationEffectKey];
459   if (effect == NSViewAnimationFadeInEffect) {
460     return NO;
461   } else if (effect == NSViewAnimationFadeOutEffect) {
462     return YES;
463   }
465   NOTREACHED();
466   return YES;
469 - (content::WebContents*)currentWebContents {
470   return browser_->tab_strip_model()->GetActiveWebContents();
473 - (BrowserActionButton*)mainButtonForId:(const std::string&)id {
474   BrowserActionsController* mainController = isOverflow_ ?
475       [[self toolbarController] browserActionsController] : self;
476   return [mainController buttonForId:id];
479 - (ToolbarActionsBar*)toolbarActionsBar {
480   return toolbarActionsBar_.get();
483 - (void)setFocusedInOverflow:(BOOL)focused {
484   BOOL isFocused = focusedViewIndex_ != -1;
485   if (isFocused != focused) {
486     int index = focused ?
487         [buttons_ count] - toolbarActionsBar_->GetIconCount() : -1;
488     [self setFocusedViewIndex:index];
489   }
492 - (gfx::Size)sizeForOverflowWidth:(int)maxWidth {
493   toolbarActionsBar_->SetOverflowRowWidth(maxWidth);
494   return [self preferredSize];
497 #pragma mark -
498 #pragma mark NSMenuDelegate
500 - (void)menuNeedsUpdate:(NSMenu*)menu {
501   [menu removeAllItems];
503   // See menu_button.h for documentation on why this is needed.
504   [menu addItemWithTitle:@"" action:nil keyEquivalent:@""];
506   NSUInteger iconCount = toolbarActionsBar_->GetIconCount();
507   NSRange hiddenButtonRange =
508       NSMakeRange(iconCount, [buttons_ count] - iconCount);
509   for (BrowserActionButton* button in
510            [buttons_ subarrayWithRange:hiddenButtonRange]) {
511     NSString* name =
512         base::SysUTF16ToNSString([button viewController]->GetActionName());
513     NSMenuItem* item =
514         [menu addItemWithTitle:name
515                         action:@selector(chevronItemSelected:)
516                  keyEquivalent:@""];
517     [item setRepresentedObject:button];
518     [item setImage:[button compositedImage]];
519     [item setTarget:self];
520     [item setEnabled:[button isEnabled]];
521   }
524 #pragma mark -
525 #pragma mark Private Methods
527 - (void)addViewForAction:(ToolbarActionViewController*)action
528                withIndex:(NSUInteger)index {
529   NSRect buttonFrame = NSMakeRect(NSMaxX([containerView_ bounds]),
530                                   0,
531                                   ToolbarActionsBar::IconWidth(false),
532                                   ToolbarActionsBar::IconHeight());
533   BrowserActionButton* newButton =
534       [[[BrowserActionButton alloc]
535          initWithFrame:buttonFrame
536         viewController:action
537             controller:self] autorelease];
538   [newButton setTarget:self];
539   [newButton setAction:@selector(browserActionClicked:)];
540   [buttons_ insertObject:newButton atIndex:index];
542   [[NSNotificationCenter defaultCenter]
543       addObserver:self
544          selector:@selector(actionButtonDragging:)
545              name:kBrowserActionButtonDraggingNotification
546            object:newButton];
548   [containerView_ setMaxDesiredWidth:toolbarActionsBar_->GetMaximumWidth()];
551 - (void)redraw {
552   if (![self updateContainerVisibility])
553     return;  // Container is hidden; no need to update.
555   scoped_ptr<ui::NinePartImageIds> highlight;
556   if (toolbarActionsBar_->is_highlighting()) {
557     if (toolbarActionsBar_->highlight_type() ==
558         ToolbarActionsModel::HIGHLIGHT_INFO)
559       highlight.reset(
560           new ui::NinePartImageIds(IMAGE_GRID(IDR_TOOLBAR_ACTION_HIGHLIGHT)));
561     else
562       highlight.reset(
563           new ui::NinePartImageIds(IMAGE_GRID(IDR_DEVELOPER_MODE_HIGHLIGHT)));
564   }
565   [containerView_ setHighlight:highlight.Pass()];
567   std::vector<ToolbarActionViewController*> toolbar_actions =
568       toolbarActionsBar_->GetActions();
569   for (NSUInteger i = 0; i < [buttons_ count]; ++i) {
570     ToolbarActionViewController* controller =
571         [[self buttonAtIndex:i] viewController];
572     if (controller != toolbar_actions[i]) {
573       size_t j = i + 1;
574       while (true) {
575         ToolbarActionViewController* other_controller =
576             [[self buttonAtIndex:j] viewController];
577         if (other_controller == toolbar_actions[i])
578           break;
579         ++j;
580       }
581       [buttons_ exchangeObjectAtIndex:i withObjectAtIndex:j];
582     }
583   }
585   [self showChevronIfNecessaryInFrame:[containerView_ frame]];
586   NSUInteger minIndex = isOverflow_ ?
587       [buttons_ count] - toolbarActionsBar_->GetIconCount() : 0;
588   NSUInteger maxIndex = isOverflow_ ?
589       [buttons_ count] : toolbarActionsBar_->GetIconCount();
590   for (NSUInteger i = 0; i < [buttons_ count]; ++i) {
591     BrowserActionButton* button = [buttons_ objectAtIndex:i];
592     if ([button isBeingDragged])
593       continue;
595     [self moveButton:[buttons_ objectAtIndex:i] toIndex:i];
597     if (i >= minIndex && i < maxIndex) {
598       // Make sure the button is within the visible container.
599       if ([button superview] != containerView_) {
600         // We add the subview under the sibling views so that when it
601         // "slides in", it does so under its neighbors.
602         [containerView_ addSubview:button
603                         positioned:NSWindowBelow
604                         relativeTo:nil];
605       }
606       // We need to set the alpha value in case the container has resized.
607       [button setAlphaValue:1.0];
608     } else if ([button superview] == containerView_ &&
609                ![containerView_ userIsResizing]) {
610       // If the user is resizing, all buttons are (and should be) on the
611       // container view.
612       [button removeFromSuperview];
613       [button setAlphaValue:0.0];
614     }
615   }
618 - (void)removeViewForAction:(ToolbarActionViewController*)action {
619   BrowserActionButton* button = [self buttonForId:action->GetId()];
621   [button removeFromSuperview];
622   [button onRemoved];
623   [buttons_ removeObject:button];
625   [containerView_ setMaxDesiredWidth:toolbarActionsBar_->GetMaximumWidth()];
628 - (void)removeAllViews {
629   for (BrowserActionButton* button in buttons_.get()) {
630     [button removeFromSuperview];
631     [button onRemoved];
632   }
633   [buttons_ removeAllObjects];
636 - (void)resizeContainerToWidth:(CGFloat)width {
637   // Cocoa goes a little crazy if we try and change animations while adjusting
638   // child frames (i.e., the buttons). If the toolbar is already animating,
639   // just jump to the new frame. (This typically only happens if someone is
640   // "spamming" a button to add/remove an action.)
641   BOOL animate = !toolbarActionsBar_->suppress_animation() &&
642       ![containerView_ isAnimating];
643   [self updateContainerVisibility];
644   [containerView_ resizeToWidth:width
645                         animate:animate];
646   NSRect frame = animate ? [containerView_ animationEndFrame] :
647                            [containerView_ frame];
649   [self showChevronIfNecessaryInFrame:frame];
651   [containerView_ setNeedsDisplay:YES];
653   if (!animate) {
654     [[NSNotificationCenter defaultCenter]
655         postNotificationName:kBrowserActionVisibilityChangedNotification
656                       object:self];
657   }
658   [self redraw];
659   [self updateGrippyCursors];
662 - (BOOL)updateContainerVisibility {
663   BOOL hidden = [buttons_ count] == 0;
664   if ([containerView_ isHidden] != hidden)
665     [containerView_ setHidden:hidden];
666   return !hidden;
669 - (void)updateButtonOpacity {
670   for (BrowserActionButton* button in buttons_.get()) {
671     NSRect buttonFrame = [button frame];
672     if (NSContainsRect([containerView_ bounds], buttonFrame)) {
673       if ([button alphaValue] != 1.0)
674         [button setAlphaValue:1.0];
676       continue;
677     }
678     CGFloat intersectionWidth =
679         NSWidth(NSIntersectionRect([containerView_ bounds], buttonFrame));
680     CGFloat alpha = std::max(static_cast<CGFloat>(0.0),
681                              intersectionWidth / NSWidth(buttonFrame));
682     [button setAlphaValue:alpha];
683     [button setNeedsDisplay:YES];
684   }
687 - (void)updateButtonPositions {
688   for (NSUInteger index = 0; index < [buttons_ count]; ++index) {
689     BrowserActionButton* button = [buttons_ objectAtIndex:index];
690     NSRect buttonFrame = [self frameForIndex:index];
692     // If the button is at the proper position (or animating to it), then we
693     // don't need to update its position.
694     if (NSMinX([button frameAfterAnimation]) == NSMinX(buttonFrame))
695       continue;
697     // We set the x-origin by calculating the proper distance from the right
698     // edge in the container so that, if the container is animating, the
699     // button appears stationary.
700     buttonFrame.origin.x = NSWidth([containerView_ frame]) -
701         (toolbarActionsBar_->GetPreferredSize().width() - NSMinX(buttonFrame));
702     [button setFrame:buttonFrame animate:NO];
703   }
706 - (BrowserActionButton*)buttonForId:(const std::string&)id {
707   for (BrowserActionButton* button in buttons_.get()) {
708     if ([button viewController]->GetId() == id)
709       return button;
710   }
711   return nil;
714 - (BrowserActionButton*)buttonAtIndex:(NSUInteger)index {
715   return static_cast<BrowserActionButton*>([buttons_ objectAtIndex:index]);
718 - (void)containerFrameChanged:(NSNotification*)notification {
719   [self updateButtonPositions];
720   [self updateButtonOpacity];
721   [[containerView_ window] invalidateCursorRectsForView:containerView_];
722   [self updateChevronPositionInFrame:[containerView_ frame]];
725 - (void)containerDragStart:(NSNotification*)notification {
726   [self setChevronHidden:YES inFrame:[containerView_ frame]];
727   for (BrowserActionButton* button in buttons_.get()) {
728     if ([button superview] != containerView_) {
729       [button setAlphaValue:1.0];
730       [containerView_ addSubview:button];
731     }
732   }
735 - (void)containerDragFinished:(NSNotification*)notification {
736   for (BrowserActionButton* button in buttons_.get()) {
737     NSRect buttonFrame = [button frame];
738     if (NSContainsRect([containerView_ bounds], buttonFrame))
739       continue;
741     CGFloat intersectionWidth =
742         NSWidth(NSIntersectionRect([containerView_ bounds], buttonFrame));
743     // Hide the button if it's not "mostly" visible. "Mostly" here equates to
744     // having three or fewer pixels hidden.
745     if (([containerView_ grippyPinned] && intersectionWidth > 0) ||
746         (intersectionWidth <= NSWidth(buttonFrame) - 3.0)) {
747       [button setAlphaValue:0.0];
748       [button removeFromSuperview];
749     }
750   }
752   toolbarActionsBar_->OnResizeComplete(
753       toolbarActionsBar_->IconCountToWidth([self visibleButtonCount]));
755   [self updateGrippyCursors];
756   [self resizeContainerToWidth:toolbarActionsBar_->GetPreferredSize().width()];
759 - (void)containerAnimationEnded:(NSNotification*)notification {
760   if (![containerView_ isAnimating])
761     toolbarActionsBar_->OnAnimationEnded();
764 - (void)containerKeyEvent:(NSNotification*)notification {
765   DCHECK(isOverflow_);  // We only manually process key events in overflow.
767   NSDictionary* dict = [notification userInfo];
768   BrowserActionsContainerKeyAction action =
769       static_cast<BrowserActionsContainerKeyAction>(
770           [[dict objectForKey:kBrowserActionsContainerKeyEventKey] intValue]);
771   switch (action) {
772     case BROWSER_ACTIONS_DECREMENT_FOCUS:
773     case BROWSER_ACTIONS_INCREMENT_FOCUS: {
774       NSInteger newIndex = focusedViewIndex_ +
775           (action == BROWSER_ACTIONS_INCREMENT_FOCUS ? 1 : -1);
776       NSInteger minIndex =
777           [buttons_ count] - toolbarActionsBar_->GetIconCount();
778       if (newIndex >= minIndex && newIndex < static_cast<int>([buttons_ count]))
779         [self setFocusedViewIndex:newIndex];
780       break;
781     }
782     case BROWSER_ACTIONS_EXECUTE_CURRENT: {
783       if (focusedViewIndex_ != -1) {
784         BrowserActionButton* focusedButton =
785             [self buttonAtIndex:focusedViewIndex_];
786         [focusedButton performClick:focusedButton];
787       }
788       break;
789     }
790     case BROWSER_ACTIONS_INVALID_KEY_ACTION:
791       NOTREACHED();
792   }
795 - (void)containerMouseEntered:(NSNotification*)notification {
796   if (!activeBubble_ &&  // only show one bubble at a time
797       ExtensionToolbarIconSurfacingBubbleDelegate::ShouldShowForProfile(
798           browser_->profile())) {
799     scoped_ptr<ToolbarActionsBarBubbleDelegate> delegate(
800         new ExtensionToolbarIconSurfacingBubbleDelegate(browser_->profile()));
801     ToolbarActionsBarBubbleMac* bubble =
802         [self createMessageBubble:delegate.Pass()
803                      anchorToSelf:YES];
804     [bubble showWindow:nil];
805   }
806   [containerView_ setTrackingEnabled:NO];
807   [[NSNotificationCenter defaultCenter]
808       removeObserver:self
809                 name:kBrowserActionsContainerMouseEntered
810               object:containerView_];
813 - (void)actionButtonDragging:(NSNotification*)notification {
814   suppressChevron_ = YES;
815   if (![self chevronIsHidden])
816     [self setChevronHidden:YES inFrame:[containerView_ frame]];
818   // Determine what index the dragged button should lie in, alter the model and
819   // reposition the buttons.
820   BrowserActionButton* draggedButton = [notification object];
821   NSRect draggedButtonFrame = [draggedButton frame];
822   // Find the mid-point. We flip the y-coordinates so that y = 0 is at the
823   // top of the container to make row calculation more logical.
824   NSPoint midPoint =
825       NSMakePoint(NSMidX(draggedButtonFrame),
826                   NSMaxY([containerView_ bounds]) - NSMidY(draggedButtonFrame));
828   // Calculate the row index and the index in the row. We bound the latter
829   // because the view can go farther right than the right-most icon in the last
830   // row of the overflow menu.
831   NSInteger rowIndex = midPoint.y / ToolbarActionsBar::IconHeight();
832   int icons_per_row = isOverflow_ ?
833       toolbarActionsBar_->platform_settings().icons_per_overflow_menu_row :
834       toolbarActionsBar_->GetIconCount();
835   NSInteger indexInRow = std::min(icons_per_row - 1,
836       static_cast<int>(midPoint.x / ToolbarActionsBar::IconWidth(true)));
838   // Find the desired index for the button.
839   NSInteger maxIndex = [buttons_ count] - 1;
840   NSInteger offset = isOverflow_ ?
841       [buttons_ count] - toolbarActionsBar_->GetIconCount() : 0;
842   NSInteger index =
843       std::min(maxIndex, offset + rowIndex * icons_per_row + indexInRow);
845   toolbarActionsBar_->OnDragDrop([buttons_ indexOfObject:draggedButton],
846                                  index,
847                                  ToolbarActionsBar::DRAG_TO_SAME);
850 - (void)actionButtonDragFinished:(NSNotification*)notification {
851   suppressChevron_ = NO;
852   [self redraw];
855 - (NSRect)frameForIndex:(NSUInteger)index {
856   gfx::Rect frameRect = toolbarActionsBar_->GetFrameForIndex(index);
857   int iconWidth = ToolbarActionsBar::IconWidth(false);
858   // The toolbar actions bar will return an empty rect if the index is for an
859   // action that is before range we show (i.e., is for a button that's on the
860   // main bar, and this is the overflow). Set the frame to be outside the bounds
861   // of the view.
862   NSRect frame = frameRect.IsEmpty() ?
863       NSMakeRect(-iconWidth - 1, 0, iconWidth,
864                  ToolbarActionsBar::IconHeight()) :
865       NSRectFromCGRect(frameRect.ToCGRect());
866   // We need to flip the y coordinate for Cocoa's view system.
867   frame.origin.y = NSHeight([containerView_ frame]) - NSMaxY(frame);
868   return frame;
871 - (NSPoint)popupPointForView:(NSView*)view
872                   withBounds:(NSRect)bounds {
873   // Anchor point just above the center of the bottom.
874   int y = [view isFlipped] ? NSMaxY(bounds) - kBrowserActionBubbleYOffset :
875                              kBrowserActionBubbleYOffset;
876   NSPoint anchor = NSMakePoint(NSMidX(bounds), y);
877   // Convert the point to the container view's frame, and adjust for animation.
878   NSPoint anchorInContainer =
879       [containerView_ convertPoint:anchor fromView:view];
880   anchorInContainer.x -= NSMinX([containerView_ frame]) -
881       NSMinX([containerView_ animationEndFrame]);
883   return [containerView_ convertPoint:anchorInContainer toView:nil];
886 - (void)moveButton:(BrowserActionButton*)button
887            toIndex:(NSUInteger)index {
888   NSRect buttonFrame = [self frameForIndex:index];
890   CGFloat currentX = NSMinX([button frame]);
891   CGFloat xLeft = toolbarActionsBar_->GetPreferredSize().width() -
892       NSMinX(buttonFrame);
893   // We check if the button is already in the correct place for the toolbar's
894   // current size. This could mean that the button could be the correct distance
895   // from the left or from the right edge. If it has the correct distance, we
896   // don't move it, and it will be updated when the container frame changes.
897   // This way, if the user has extensions A and C installed, and installs
898   // extension B between them, extension C appears to stay stationary on the
899   // screen while the toolbar expands to the left (even though C's bounds within
900   // the container change).
901   if ((currentX == NSMinX(buttonFrame) ||
902        currentX == NSWidth([containerView_ frame]) - xLeft) &&
903       NSMinY([button frame]) == NSMinY(buttonFrame))
904     return;
906   // It's possible the button is already animating to the right place. Don't
907   // call move again, because it will stop the current animation.
908   if (!NSEqualRects(buttonFrame, [button frameAfterAnimation])) {
909     [button setFrame:buttonFrame
910              animate:!toolbarActionsBar_->suppress_animation() && !isOverflow_];
911   }
914 - (BOOL)browserActionClicked:(BrowserActionButton*)button {
915   return [button viewController]->ExecuteAction(true);
918 - (void)showChevronIfNecessaryInFrame:(NSRect)frame {
919   if (!toolbarActionsBar_->platform_settings().chevron_enabled)
920     return;
921   bool hidden = suppressChevron_ ||
922       toolbarActionsBar_->GetIconCount() == [self buttonCount];
923   [self setChevronHidden:hidden inFrame:frame];
926 - (void)updateChevronPositionInFrame:(NSRect)frame {
927   CGFloat xPos = NSWidth(frame) - kChevronWidth -
928       toolbarActionsBar_->platform_settings().right_padding;
929   NSRect buttonFrame = NSMakeRect(xPos,
930                                   0,
931                                   kChevronWidth,
932                                   ToolbarActionsBar::IconHeight());
933   [chevronAnimation_ stopAnimation];
934   [chevronMenuButton_ setFrame:buttonFrame];
937 - (void)setChevronHidden:(BOOL)hidden
938                  inFrame:(NSRect)frame {
939   if (!toolbarActionsBar_->platform_settings().chevron_enabled ||
940       hidden == [self chevronIsHidden])
941     return;
943   if (!chevronMenuButton_.get()) {
944     chevronMenuButton_.reset([[MenuButton alloc] init]);
945     [chevronMenuButton_ setOpenMenuOnClick:YES];
946     [chevronMenuButton_ setBordered:NO];
947     [chevronMenuButton_ setShowsBorderOnlyWhileMouseInside:YES];
949     [[chevronMenuButton_ cell] setImageID:IDR_BROWSER_ACTIONS_OVERFLOW
950                            forButtonState:image_button_cell::kDefaultState];
951     [[chevronMenuButton_ cell] setImageID:IDR_BROWSER_ACTIONS_OVERFLOW_H
952                            forButtonState:image_button_cell::kHoverState];
953     [[chevronMenuButton_ cell] setImageID:IDR_BROWSER_ACTIONS_OVERFLOW_P
954                            forButtonState:image_button_cell::kPressedState];
956     overflowMenu_.reset([[NSMenu alloc] initWithTitle:@""]);
957     [overflowMenu_ setAutoenablesItems:NO];
958     [overflowMenu_ setDelegate:self];
959     [chevronMenuButton_ setAttachedMenu:overflowMenu_];
961     [containerView_ addSubview:chevronMenuButton_];
962   }
964   [self updateChevronPositionInFrame:frame];
966   // Stop any running animation.
967   [chevronAnimation_ stopAnimation];
969   if (toolbarActionsBar_->suppress_animation()) {
970     [chevronMenuButton_ setHidden:hidden];
971     return;
972   }
974   NSString* animationEffect;
975   if (hidden) {
976     animationEffect = NSViewAnimationFadeOutEffect;
977   } else {
978     [chevronMenuButton_ setHidden:NO];
979     animationEffect = NSViewAnimationFadeInEffect;
980   }
981   NSDictionary* animationDictionary = @{
982       NSViewAnimationTargetKey : chevronMenuButton_.get(),
983       NSViewAnimationEffectKey : animationEffect
984   };
985   [chevronAnimation_ setViewAnimations:
986       [NSArray arrayWithObject:animationDictionary]];
987   [chevronAnimation_ startAnimation];
990 - (void)chevronItemSelected:(id)menuItem {
991   [self browserActionClicked:[menuItem representedObject]];
994 - (void)updateGrippyCursors {
995   [containerView_
996       setCanDragLeft:toolbarActionsBar_->GetIconCount() != [buttons_ count]];
997   [containerView_ setCanDragRight:[self visibleButtonCount] > 0];
998   [[containerView_ window] invalidateCursorRectsForView:containerView_];
1001 - (ToolbarController*)toolbarController {
1002   return [[BrowserWindowController browserWindowControllerForWindow:
1003              browser_->window()->GetNativeWindow()] toolbarController];
1006 - (ToolbarActionsBarBubbleMac*)createMessageBubble:
1007     (scoped_ptr<ToolbarActionsBarBubbleDelegate>)delegate
1008     anchorToSelf:(BOOL)anchorToSelf {
1009   DCHECK_GE([buttons_ count], 0u);
1010   NSView* anchorView =
1011       anchorToSelf ? containerView_ : [[self toolbarController] wrenchButton];
1012   NSPoint anchor = [self popupPointForView:anchorView
1013                                 withBounds:[anchorView bounds]];
1015   anchor = [[containerView_ window] convertBaseToScreen:anchor];
1016   activeBubble_ = [[ToolbarActionsBarBubbleMac alloc]
1017       initWithParentWindow:[containerView_ window]
1018                anchorPoint:anchor
1019                   delegate:delegate.Pass()];
1020   [[NSNotificationCenter defaultCenter]
1021       addObserver:self
1022          selector:@selector(bubbleWindowClosing:)
1023              name:NSWindowWillCloseNotification
1024            object:[activeBubble_ window]];
1025   return activeBubble_;
1028 - (void)bubbleWindowClosing:(NSNotification*)notification {
1029   activeBubble_ = nil;
1032 - (void)setFocusedViewIndex:(NSInteger)index {
1033   DCHECK(isOverflow_);
1034   focusedViewIndex_ = index;
1037 #pragma mark -
1038 #pragma mark Testing Methods
1040 - (BrowserActionButton*)buttonWithIndex:(NSUInteger)index {
1041   return index < [buttons_ count] ? [buttons_ objectAtIndex:index] : nil;
1044 @end