/*

 Copyright (C) 2017 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 Custom NSColorPicker plugin.

 */

#import "MyColorPicker.h"

// Defined control tags for each color radio button.

typedef NS_ENUM(NSInteger, ColorTagType) {

    RedTag = 1,

    GreenTag,

    BlueTag,

    WhiteTag,

    OtherTag

};

#pragma mark -

@interface MyColorPicker ()

@property (weak) IBOutlet NSView  *colorPickerView;

@property (strong) IBOutlet NSPanel *colorPickerPrefs;

@end

#pragma mark -

@implementation MyColorPicker

#pragma mark - NSColorPickingDefault

// The adopted protocol to return our picker icon which is displayed in the NSColorPanel.

- (NSImage *)provideNewButtonImage

{

    NSImage *image = [[NSImage alloc] initWithContentsOfFile:

                        [[NSBundle bundleForClass:[self class]] pathForResource:@"icon" ofType:@"tiff"]];

    [image setSize:NSMakeSize(32.0,32.0)];

    return image;

}

// Provide a tooltip for our color picker icon in the NSColorPanel.

- (NSString *)buttonToolTip

{

    return @"MyColorPicker";

}

// Provide a description string for our color picker.

- (NSString *)description

{

    return NSLocalizedString(@"MyColorPicker - A simple RGB color picker", @"");

}

#pragma mark - NSColorPickingCustom

// You build your own custom color picker as a bundle by subclassing NSColorPicker and adopting the NSColorPickingCustom protocol.

// MyColorPicker is launched by adopting the NSColorPickingCustom's protocol -

//

- (NSView*)provideNewView:(BOOL)initialRequest

{

    // the param "initialRequest" is YES on the very first call, at that moment

    // you ask your NSBundle to load its nib.

    //

    if (initialRequest)

    {

        [[NSBundle bundleWithIdentifier:@"com.apple.MyColorpicker"] loadNibNamed:@"MyColorPicker" owner:self topLevelObjects:nil];

    }

    return self.colorPickerView;

}

// Determine which picking color mode we support (used by the NSColorPanel).

- (BOOL)supportsMode:(NSColorPanelMode)mode

{

    return YES; // we support all modes

}

// Return our current color picker mode (used by the NSColorPanel).

- (NSColorPanelMode)currentMode

{

    return NSColorPanelModeRGB;

}

- (void)setColor:(NSColor *)color

{

    //..

}

#pragma mark - Color Selection

// Map a specific radio button tag to an NSColor.

- (NSColor *)tagToColor:(NSInteger)tag

{

    NSColor *color = nil;

    switch (tag)

    {

        case RedTag:    // red

            color = [NSColor redColor];

            break;

        case GreenTag:  // green

            color = [NSColor greenColor];

            break;

        case BlueTag:   // blue

            color = [NSColor blueColor];

            break;

        case WhiteTag: // white

            color = [NSColor whiteColor];

            break;

        case OtherTag:  // other (default gray)

            color = [NSColor lightGrayColor];

            break;

    }

    return color;

}

#pragma mark - Actions

// User chose a particular color from one of the radio buttons.

- (IBAction)colorChanged:(id)sender

{

    NSColor *color = [self tagToColor:((NSButton *)sender).tag];

    [[self colorPanel] setColor:color];

}

// User clicked the preferences button.

- (IBAction)showPrefs:(id)sender

{

    [self.colorPickerView.window beginSheet:self.colorPickerPrefs completionHandler:nil];

}

// User clicked the OK button from preferences.

- (IBAction)finishPrefs:(id)sender

{

    [self.colorPickerPrefs orderOut:self];

}

@end