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// MGScopeBarDelegateProtocol.h
// MGScopeBar
// Created by Matt Gemmell on 15/03/2008.
// Copyright 2008 Instinctive Code.
#import <Cocoa/Cocoa.h>
// Selection modes for the buttons within a group.
typedef enum _MGScopeBarGroupSelectionMode {
MGRadioSelectionMode = 0, // Exactly one item in the group will be selected at a time (no more, and no less).
MGMultipleSelectionMode = 1 // Any number of items in the group (including none) may be selected at a time.
} MGScopeBarGroupSelectionMode;
@class MGScopeBar;
@protocol MGScopeBarDelegate
// Methods used to configure the scope bar.
// Note: all groupNumber parameters are zero-based.
- (int)numberOfGroupsInScopeBar:(MGScopeBar *)theScopeBar;
- (NSArray *)scopeBar:(MGScopeBar *)theScopeBar itemIdentifiersForGroup:(int)groupNumber;
- (NSString *)scopeBar:(MGScopeBar *)theScopeBar labelForGroup:(int)groupNumber; // return nil or an empty string for no label.
- (MGScopeBarGroupSelectionMode)scopeBar:(MGScopeBar *)theScopeBar selectionModeForGroup:(int)groupNumber;
- (NSString *)scopeBar:(MGScopeBar *)theScopeBar titleOfItem:(NSString *)identifier inGroup:(int)groupNumber;
// If the following method is not implemented, all groups except the first will have a separator before them.
- (BOOL)scopeBar:(MGScopeBar *)theScopeBar showSeparatorBeforeGroup:(int)groupNumber;
- (NSImage *)scopeBar:(MGScopeBar *)theScopeBar imageForItem:(NSString *)identifier inGroup:(int)groupNumber; // default is no image. Will be shown at 16x16.
- (NSView *)accessoryViewForScopeBar:(MGScopeBar *)theScopeBar; // default is no accessory view.
// Notification methods.
- (void)scopeBar:(MGScopeBar *)theScopeBar selectedStateChanged:(BOOL)selected forItem:(NSString *)identifier inGroup:(int)groupNumber;
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