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// Copyright (c) 2010 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_COCOA_DISCLOSURE_VIEW_CONTROLLER_
#define CHROME_BROWSER_COCOA_DISCLOSURE_VIEW_CONTROLLER_
#import <Cocoa/Cocoa.h>
#include "base/scoped_nsobject.h"
@class DisclosureViewState;
@class NSViewAnimation;
// A view class that provides a disclosure triangle that controls the size
// of the view. Toggling the disclosure triangle animates the change in
// size of the view. The |openHeight| is initialized from the initial size
// of the view. |disclosureState| is initialized as |NSOnState| (of type
// NSCellStateValue) which corresponds to "open".
@interface DisclosureViewController : NSViewController {
@private
// The |detailedView_| IBOutlet references the content that becomes visible
// when the disclosure view is in the "open" state. We hold a reference
// to the content so that we can hide and show it when disclosure state
// changes.
IBOutlet NSBox* detailedView_; // weak reference
// The |disclosureState_| is instantiated from within |awakeFromNib|.
// We do not hold it as a scoped_nsobject because it is exposed as a KVO
// compliant property.
DisclosureViewState* disclosureState_; // strong reference
// Open height determines the height of the disclosed view. This value
// is derived from the initial height specified in the nib.
CGFloat openHeight_;
// Value passed in to the designated initializer. Used to set up
// initial view state when we |awakeFromNib|.
NSCellStateValue initialDisclosureState_;
// Animation object for view disclosure transitions.
scoped_nsobject<NSViewAnimation> animation_;
}
@property (nonatomic, retain) DisclosureViewState* disclosureState;
// Designated initializer. Sets the initial disclosure state.
- (id)initWithNibName:(NSString *)nibNameOrNil
bundle:(NSBundle *)nibBundleOrNil
disclosure:(NSCellStateValue)disclosureState;
@end
#endif // CHROME_BROWSER_COCOA_DISCLOSURE_VIEW_CONTROLLER_
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