AppController.j

/*
 * AppController.j
 * textfield
 *
 * Created by You on October 9, 2009.
 * Copyright 2009, Your Company All rights reserved.
 */

@import <Foundation/CPObject.j>
@import "MyTextField.j"

@implementation AppController : CPObject
{
	CPTextField label;
	CPString	defaultValue;
}

- (void)applicationDidFinishLaunching:(CPNotification)aNotification
{
    var theWindow = [[CPWindow alloc] initWithContentRect:CGRectMakeZero() styleMask:CPBorderlessBridgeWindowMask],
        contentView = [theWindow contentView];
		
		defaultValue = @"Hello World!";
				
    label = [[CPTextField alloc] initWithFrame:CGRectMakeZero()];
		
    [label setStringValue: defaultValue];
    [label setFrameSize: CGSizeMake(370, 40)];
    [label setFrameOrigin: CGPointMake(10, 10)];
    [label setFont: [CPFont boldSystemFontOfSize: 20.0]];
    [label setTextColor:[CPColor colorWithHexString: @"000000"]];
    [label setBezeled: YES];
    [label setDelegate: self];
    [label setEditable: YES];
    [contentView addSubview:label];
		
    label2 = [[MyTextField alloc] initWithFrame:CGRectMakeZero()];
		var defaultValue2 = @"Good Night!";
		
    [label2 setStringValue: defaultValue2];
    [label2 setDefaultValue: defaultValue2];
    [label2 setFrameSize: CGSizeMake(370, 40)];
    [label2 setFrameOrigin: CGPointMake(10, 50)];
    [label2 setFont: [CPFont boldSystemFontOfSize: 20.0]];
    [label2 setTextColor:[CPColor colorWithHexString: @"000000"]];
    [label2 setBezeled: YES];
    [label2 setEditable: YES];				
    [contentView addSubview:label2];

    [theWindow orderFront:self];
}

// SetPlaceHolderString Works When using delegate
-(void) controlTextDidBeginEditing: (CPNotification) aNote
{
	if([label stringValue] == defaultValue){
            [label setPlaceholderString: ""];
	}
}

-(void) controlTextDidEndEditing: (CPNotification) aNote
{
	if([label stringValue] == ""){
		[label setPlaceholderString: defaultValue];
	}
}


@end

MyTextField.j

/**
 * MyTextField.j
 */

@implementation MyTextField : CPTextField 
{
	CPString _defaultValue;
}

- (void) setDefaultValue: (CPString) anDefaultValue
{
	_defaultValue = anDefaultValue;
}

- (CPString) defaultValue
{
	return _defaultValue;
}


// SetPlaceHolderString Does not Work when subclassing in the textDidBeginEditing method.
-(void) textDidBeginEditing: (CPNotification) aNote
{
	if([self stringValue] == [self defaultValue]){
		console.log("value before >> " + [self defaultValue]);
		[self setPlaceholderString: ""];
		console.log("value after >> " + [self defaultValue]);
	}
}

-(void) textDidEndEditing: (CPNotification) aNote
{
	if([self stringValue] == ""){
		[self setPlaceholderString: [self defaultValue]];
	}
}

@end