//
//  GSGlyphViewControllerProtocol.h
//  GlyphsCore
//
//  Created by Georg Seifert on 11.09.09.
//  Copyright 2009 schriftgestaltung.de. All rights reserved.
//

@class GSLayer;
@class GSFontMaster;

#import <GlyphsCore/GSFont.h>
#import <GlyphsCore/GSGlyphEditViewProtocol.h>
#import <GlyphsCore/GSWindowControllerProtocol.h>

NS_ASSUME_NONNULL_BEGIN

/** This protocol defines the API for the main view controllers. This is implemented by the font view controller and the edit view controller.
 */

@protocol GSGlyphViewControllerProtocol

/// The index of the active master
@property (nonatomic) NSUInteger masterIndex;

// all visible layers
@property (readonly, nonatomic) NSArray<GSLayer *> *allLayers;

/// The selected layers
@property (readonly, nonatomic) NSArray<GSLayer *> *selectedLayers;

/// The GSFont object
@property (readonly, nonatomic) id representedObject;

/** The active layer

 If only one layer is selected it retunes it, otherwise it retunes nil.

 In the editview, this is the layer that has a gray info box.
 */
@property (readonly, nonatomic, nullable) GSLayer *activeLayer;

/** This is a copy of the layer while and drag operation or a filter dialog is active.

 It stores the original content objects of the layer, so please don’t change anything
 */
@property (strong, nonatomic, nullable) GSLayer *shadowLayer;

- (NSView *)contentView;

@property (nonatomic) CGFloat scale;

@optional
/** is called to determine if the "Show Info for Selection" menu item should be activated

 @return a bool
 */
- (BOOL)canShowInfoForSelection;
/** This is the action for the "Show Info for Selection" menu item.

 @param sender The caller, most likely the menu item
 */
- (IBAction)showInfoForSelection:(id)sender;

- (IBAction)printDocument:(id)sender;

- (void)didGetSelected;

- (void)redraw;

- (void)reflow;

@end

/// This protocol defines the API for the edit view controller.
@protocol GSGlyphEditViewControllerProtocol <GSGlyphViewControllerProtocol>

/// The actual edit view
@property (readonly, nonatomic, nonnull) NSView<GSGlyphEditViewProtocol, NSTextInputClient> *graphicView;

@property (readonly, nonatomic) NSView<GSGlyphEditViewProtocol> *frameView;

@property (readonly, nonatomic) NSStackView *infoView;

/// the GSWindowController of the window that contains the edit view
@property (weak) NSWindowController<GSWindowControllerProtocol> *windowController;

/// The writing direction
@property (nonatomic) GSWritingDirection writingDirection;

/// The selected instance in the preview view
@property (nonatomic, assign) NSInteger selectedInstance;

- (GSFontMaster *)activeMaster;

/// The selected features
@property (readonly, nonatomic) NSArray *selectedFeatures;

/// call to update the graphicView
- (void)redraw;

/// updates the graphicView and preview
- (void)forceRedraw;

/// is called when the status bar needs updating
- (void)updateFormatBar:(NSString *)keyPath;

- (void)updatePreview;

- (void)updateInspector;

- (IBAction)showGlyphInFontViewAction:(id)sender;

@end

NS_ASSUME_NONNULL_END
