[Mac] Organize all tab/tab strip files into chrome/browser/ui/cocoa/tabs/....

chrome/browser/ui/cocoa/tab_view.h

-// Copyright (c) 2009 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_TAB_VIEW_H_
-#define CHROME_BROWSER_UI_COCOA_TAB_VIEW_H_
-#pragma once
-
-#import <Cocoa/Cocoa.h>
-#include <ApplicationServices/ApplicationServices.h>
-
-#include <map>
-
-#include "base/scoped_nsobject.h"
-#import "chrome/browser/ui/cocoa/background_gradient_view.h"
-#import "chrome/browser/ui/cocoa/hover_close_button.h"
-
-namespace tabs {
-
-// Nomenclature:
-// Tabs _glow_ under two different circumstances, when they are _hovered_ (by
-// the mouse) and when they are _alerted_ (to show that the tab's title has
-// changed).
-
-// The state of alerting (to show a title change on an unselected, pinned tab).
-// This is more complicated than a simple on/off since we want to allow the
-// alert glow to go through a full rise-hold-fall cycle to avoid flickering (or
-// always holding).
-enum AlertState {
-  kAlertNone = 0,  // Obj-C initializes to this.
-  kAlertRising,
-  kAlertHolding,
-  kAlertFalling
-};
-
-}  // namespace tabs
-
-@class TabController, TabWindowController;
-
-// A view that handles the event tracking (clicking and dragging) for a tab
-// on the tab strip. Relies on an associated TabController to provide a
-// target/action for selecting the tab.
-
-@interface TabView : BackgroundGradientView {
- @private
-  IBOutlet TabController* controller_;
-  // TODO(rohitrao): Add this button to a CoreAnimation layer so we can fade it
-  // in and out on mouseovers.
-  IBOutlet HoverCloseButton* closeButton_;
-
-  // See awakeFromNib for purpose.
-  scoped_nsobject<HoverCloseButton> closeButtonRetainer_;
-
-  BOOL closing_;
-
-  // Tracking area for close button mouseover images.
-  scoped_nsobject<NSTrackingArea> closeTrackingArea_;
-
-  BOOL isMouseInside_;  // Is the mouse hovering over?
-  tabs::AlertState alertState_;
-
-  CGFloat hoverAlpha_;  // How strong the hover glow is.
-  NSTimeInterval hoverHoldEndTime_;  // When the hover glow will begin dimming.
-
-  CGFloat alertAlpha_;  // How strong the alert glow is.
-  NSTimeInterval alertHoldEndTime_;  // When the hover glow will begin dimming.
-
-  NSTimeInterval lastGlowUpdate_;  // Time either glow was last updated.
-
-  NSPoint hoverPoint_;  // Current location of hover in view coords.
-
-  // All following variables are valid for the duration of a drag.
-  // These are released on mouseUp:
-  BOOL moveWindowOnDrag_;  // Set if the only tab of a window is dragged.
-  BOOL tabWasDragged_;  // Has the tab been dragged?
-  BOOL draggingWithinTabStrip_;  // Did drag stay in the current tab strip?
-  BOOL chromeIsVisible_;
-
-  NSTimeInterval tearTime_;  // Time since tear happened
-  NSPoint tearOrigin_;  // Origin of the tear rect
-  NSPoint dragOrigin_;  // Origin point of the drag
-  // TODO(alcor): these references may need to be strong to avoid crashes
-  // due to JS closing windows
-  TabWindowController* sourceController_;  // weak. controller starting the drag
-  NSWindow* sourceWindow_;  // weak. The window starting the drag
-  NSRect sourceWindowFrame_;
-  NSRect sourceTabFrame_;
-
-  TabWindowController* draggedController_;  // weak. Controller being dragged.
-  NSWindow* dragWindow_;  // weak. The window being dragged
-  NSWindow* dragOverlay_;  // weak. The overlay being dragged
-  // Cache workspace IDs per-drag because computing them on 10.5 with
-  // CGWindowListCreateDescriptionFromArray is expensive.
-  // resetDragControllers clears this cache.
-  //
-  // TODO(davidben): When 10.5 becomes unsupported, remove this.
-  std::map<CGWindowID, int> workspaceIDCache_;
-
-  TabWindowController* targetController_;  // weak. Controller being targeted
-  NSCellStateValue state_;
-}
-
-@property(assign, nonatomic) NSCellStateValue state;
-@property(assign, nonatomic) CGFloat hoverAlpha;
-@property(assign, nonatomic) CGFloat alertAlpha;
-
-// Determines if the tab is in the process of animating closed. It may still
-// be visible on-screen, but should not respond to/initiate any events. Upon
-// setting to NO, clears the target/action of the close button to prevent
-// clicks inside it from sending messages.
-@property(assign, nonatomic, getter=isClosing) BOOL closing;
-
-// Enables/Disables tracking regions for the tab.
-- (void)setTrackingEnabled:(BOOL)enabled;
-
-// Begin showing an "alert" glow (shown to call attention to an unselected
-// pinned tab whose title changed).
-- (void)startAlert;
-
-// Stop showing the "alert" glow; this won't immediately wipe out any glow, but
-// will make it fade away.
-- (void)cancelAlert;
-
-@end
-
-// The TabController |controller_| is not the only owner of this view. If the
-// controller is released before this view, then we could be hanging onto a
-// garbage pointer. To prevent this, the TabController uses this interface to
-// clear the |controller_| pointer when it is dying.
-@interface TabView (TabControllerInterface)
-- (void)setController:(TabController*)controller;
-@end
-
-#endif  // CHROME_BROWSER_UI_COCOA_TAB_VIEW_H_