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