chrome/browser/ui/cocoa/tabs/tab_controller.h

   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 #ifndef CHROME_BROWSER_UI_COCOA_TABS_TAB_CONTROLLER_H_
   6 #define CHROME_BROWSER_UI_COCOA_TABS_TAB_CONTROLLER_H_
   7
   8 #import <Cocoa/Cocoa.h>
   9 #include "base/memory/scoped_ptr.h"
  10 #import "chrome/browser/ui/cocoa/hover_close_button.h"
  11 #import "chrome/browser/ui/cocoa/tabs/tab_strip_drag_controller.h"
  12 #include "chrome/browser/ui/tabs/tab_menu_model.h"
  13 #include "chrome/browser/ui/tabs/tab_utils.h"
  14 #include "url/gurl.h"
  15
  16 // The loading/waiting state of the tab.
  17 enum TabLoadingState {
  18   kTabDone,
  19   kTabLoading,
  20   kTabWaiting,
  21   kTabCrashed,
  22 };
  23
  24 @class MediaIndicatorButton;
  25 @class MenuController;
  26 namespace TabControllerInternal {
  27 class MenuDelegate;
  28 }
  29 @class SpriteView;
  30 @class TabView;
  31 @protocol TabControllerTarget;
  32
  33 // A class that manages a single tab in the tab strip. Set its target/action
  34 // to be sent a message when the tab is selected by the user clicking. Setting
  35 // the |loading| property to YES visually indicates that this tab is currently
  36 // loading content via a spinner.
  37 //
  38 // The tab has the notion of an "icon view" which can be used to display
  39 // identifying characteristics such as a favicon, or since it's a full-fledged
  40 // view, something with state and animation such as a throbber for illustrating
  41 // progress. The default in the nib is an image view so nothing special is
  42 // required if that's all you need.
  43
  44 @interface TabController : NSViewController<TabDraggingEventTarget> {
  45  @private
  46   base::scoped_nsobject<SpriteView> iconView_;
  47   base::scoped_nsobject<MediaIndicatorButton> mediaIndicatorButton_;
  48   base::scoped_nsobject<HoverCloseButton> closeButton_;
  49
  50   NSRect originalIconFrame_;  // frame of iconView_ as loaded from nib
  51   BOOL isIconShowing_;  // last state of iconView_ in updateVisibility
  52
  53   BOOL pinned_;
  54   BOOL active_;
  55   BOOL selected_;
  56   GURL url_;
  57   TabLoadingState loadingState_;
  58   id<TabControllerTarget> target_;  // weak, where actions are sent
  59   SEL action_;  // selector sent when tab is selected by clicking
  60   scoped_ptr<ui::SimpleMenuModel> contextMenuModel_;
  61   scoped_ptr<TabControllerInternal::MenuDelegate> contextMenuDelegate_;
  62   base::scoped_nsobject<MenuController> contextMenuController_;
  63 }
  64
  65 @property(assign, nonatomic) TabLoadingState loadingState;
  66
  67 @property(assign, nonatomic) SEL action;
  68 @property(assign, nonatomic) BOOL pinned;
  69 @property(assign, nonatomic) NSString* toolTip;
  70 // Note that |-selected| will return YES if the controller is |-active|, too.
  71 // |-setSelected:| affects the selection, while |-setActive:| affects the key
  72 // status/focus of the content.
  73 @property(assign, nonatomic) BOOL active;
  74 @property(assign, nonatomic) BOOL selected;
  75 @property(assign, nonatomic) id target;
  76 @property(assign, nonatomic) GURL url;
  77 @property(readonly, nonatomic) NSView* iconView;
  78 @property(readonly, nonatomic) MediaIndicatorButton* mediaIndicatorButton;
  79 @property(readonly, nonatomic) HoverCloseButton* closeButton;
  80
  81 // Default height for tabs.
  82 + (CGFloat)defaultTabHeight;
  83
  84 // Minimum and maximum allowable tab width. The minimum width does not show
  85 // the icon or the close button. The active tab always has at least a close
  86 // button so it has a different minimum width.
  87 + (CGFloat)minTabWidth;
  88 + (CGFloat)maxTabWidth;
  89 + (CGFloat)minActiveTabWidth;
  90 + (CGFloat)pinnedTabWidth;
  91
  92 // The view associated with this controller, pre-casted as a TabView
  93 - (TabView*)tabView;
  94
  95 // Sets the tab's icon image.
  96 // |image| must be 16x16 in size.
  97 // |image| can be a horizontal strip of image sprites which will be animated.
  98 // Setting |animate| to YES will animate away the old image before animating
  99 // the new image back to position.
 100 - (void)setIconImage:(NSImage*)image;
 101 - (void)setIconImage:(NSImage*)image withToastAnimation:(BOOL)animate;
 102
 103 // Sets the current tab media state and updates the views.
 104 - (void)setMediaState:(TabMediaState)mediaState;
 105
 106 // Closes the associated TabView by relaying the message to |target_| to
 107 // perform the close.
 108 - (void)closeTab:(id)sender;
 109
 110 // Selects the associated TabView by sending |action_| to |target_|.
 111 - (void)selectTab:(id)sender;
 112
 113 // Called by the tabs to determine whether we are in rapid (tab) closure mode.
 114 // In this mode, we handle clicks slightly differently due to animation.
 115 // Ideally, tabs would know about their own animation and wouldn't need this.
 116 - (BOOL)inRapidClosureMode;
 117
 118 // Updates the visibility of certain subviews, such as the icon and close
 119 // button, based on criteria such as the tab's selected state and its current
 120 // width.
 121 - (void)updateVisibility;
 122
 123 // Update the title color to match the tabs current state.
 124 - (void)updateTitleColor;
 125 @end
 126
 127 @interface TabController(TestingAPI)
 128 - (int)iconCapacity;
 129 - (BOOL)shouldShowIcon;
 130 - (BOOL)shouldShowMediaIndicator;
 131 - (BOOL)shouldShowCloseButton;
 132 @end  // TabController(TestingAPI)
 133
 134 #endif  // CHROME_BROWSER_UI_COCOA_TABS_TAB_CONTROLLER_H_