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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_COCOA_TABS_TAB_CONTROLLER_H_
#define CHROME_BROWSER_UI_COCOA_TABS_TAB_CONTROLLER_H_
#import <Cocoa/Cocoa.h>
#include "base/memory/scoped_ptr.h"
#import "chrome/browser/ui/cocoa/hover_close_button.h"
#import "chrome/browser/ui/cocoa/tabs/tab_strip_drag_controller.h"
#include "chrome/browser/ui/tabs/tab_menu_model.h"
#include "url/gurl.h"
// The loading/waiting state of the tab.
enum TabLoadingState {
kTabDone,
kTabLoading,
kTabWaiting,
kTabCrashed,
};
@class MenuController;
namespace TabControllerInternal {
class MenuDelegate;
}
@class TabView;
@protocol TabControllerTarget;
// A class that manages a single tab in the tab strip. Set its target/action
// to be sent a message when the tab is selected by the user clicking. Setting
// the |loading| property to YES visually indicates that this tab is currently
// loading content via a spinner.
//
// The tab has the notion of an "icon view" which can be used to display
// identifying characteristics such as a favicon, or since it's a full-fledged
// view, something with state and animation such as a throbber for illustrating
// progress. The default in the nib is an image view so nothing special is
// required if that's all you need.
@interface TabController : NSViewController<TabDraggingEventTarget> {
@private
base::scoped_nsobject<NSView> iconView_;
base::scoped_nsobject<NSTextField> titleView_;
base::scoped_nsobject<NSView> audioIndicatorView_;
base::scoped_nsobject<HoverCloseButton> closeButton_;
NSRect originalIconFrame_; // frame of iconView_ as loaded from nib
BOOL isIconShowing_; // last state of iconView_ in updateVisibility
BOOL app_;
BOOL mini_;
BOOL pinned_;
BOOL projecting_;
BOOL active_;
BOOL selected_;
GURL url_;
TabLoadingState loadingState_;
CGFloat iconTitleXOffset_; // between left edges of icon and title
id<TabControllerTarget> target_; // weak, where actions are sent
SEL action_; // selector sent when tab is selected by clicking
scoped_ptr<ui::SimpleMenuModel> contextMenuModel_;
scoped_ptr<TabControllerInternal::MenuDelegate> contextMenuDelegate_;
base::scoped_nsobject<MenuController> contextMenuController_;
}
@property(assign, nonatomic) TabLoadingState loadingState;
@property(assign, nonatomic) SEL action;
@property(assign, nonatomic) BOOL app;
@property(assign, nonatomic) BOOL mini;
@property(assign, nonatomic) BOOL pinned;
// A tab is called "projecting" when a video/audio stream of its contents is
// being captured and perhaps streamed remotely. We add a favicon glow animation
// in this state to notify the user.
@property(assign, nonatomic) BOOL projecting;
// Note that |-selected| will return YES if the controller is |-active|, too.
// |-setSelected:| affects the selection, while |-setActive:| affects the key
// status/focus of the content.
@property(assign, nonatomic) BOOL active;
@property(assign, nonatomic) BOOL selected;
@property(assign, nonatomic) id target;
@property(assign, nonatomic) GURL url;
@property(assign, nonatomic) NSView* iconView;
@property(readonly, nonatomic) NSTextField* titleView;
@property(assign, nonatomic) NSView* audioIndicatorView;
@property(readonly, nonatomic) HoverCloseButton* closeButton;
// Minimum and maximum allowable tab width. The minimum width does not show
// the icon or the close button. The selected tab always has at least a close
// button so it has a different minimum width.
+ (CGFloat)minTabWidth;
+ (CGFloat)maxTabWidth;
+ (CGFloat)minSelectedTabWidth;
+ (CGFloat)miniTabWidth;
+ (CGFloat)appTabWidth;
// The view associated with this controller, pre-casted as a TabView
- (TabView*)tabView;
// Closes the associated TabView by relaying the message to |target_| to
// perform the close.
- (void)closeTab:(id)sender;
// Selects the associated TabView by sending |action_| to |target_|.
- (void)selectTab:(id)sender;
// Called by the tabs to determine whether we are in rapid (tab) closure mode.
// In this mode, we handle clicks slightly differently due to animation.
// Ideally, tabs would know about their own animation and wouldn't need this.
- (BOOL)inRapidClosureMode;
// Updates the visibility of certain subviews, such as the icon and close
// button, based on criteria such as the tab's selected state and its current
// width.
- (void)updateVisibility;
// Update the title color to match the tabs current state.
- (void)updateTitleColor;
@end
@interface TabController(TestingAPI)
- (NSString*)toolTip;
- (int)iconCapacity;
- (BOOL)shouldShowIcon;
- (BOOL)shouldShowAudioIndicator;
- (BOOL)shouldShowCloseButton;
@end // TabController(TestingAPI)
#endif // CHROME_BROWSER_UI_COCOA_TABS_TAB_CONTROLLER_H_
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