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  1. #11
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    Fix for the gif file. Two of the images were one pixel too narrow.
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  2. #12
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    Arrow ColorField With Alpha

    ColorField With Alpha


    Hey,
    your ColorField seems perfect!
    but I guess it also can be extended with "NoColor" and "Transparency" (slider) controls,
    by default, color is transparent ... (screen's in attach)
    Now I need to use extended color palette with alpha channel defining. So, simply color is defined with 4bytes, for example: #FF00FF00, where leading byte is alpha channel. This color format is standart for ChartDirector library for example. I really understand that this is not so important for usual needs, but I need it very much.
    Have anybody any ideas/ready examples about this topic?
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  3. #13
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    Is there documentation available for extending Ext's base without actually altering it? I'd love to try some of the samples here for a project I'm working on. I'd rather stuff the code in an adjacent file than modifying ext's source.

    Thanks :-)

    - sf

  4. #14
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    Just paste the code into a new text file with a .js extension then source it after the Ext files. So if you name the file 'ColorField.js', the header of your page will contain something like this:

    HTML Code:
    <script type="text/javascript" src="/ext/adapter/ext/ext-base.js"></script>
    <script type="text/javascript" src="/ext/ext-all.js"></script>
    <script type="text/javascript" src="ColorField.js"></script>

  5. #15
    Ext JS Premium Member stever's Avatar
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    Default [2.0] New rev of ColorField

    [2.0] New rev of ColorField


    I'm having a problem where sometimes FireFox gives this sporatic error:

    [Exception... "'Permission denied to get property HTMLDivElement.nodeType' when calling method: [nsIDOMEventListener::handleEvent]" nsresult: "0x8057001e (NS_ERROR_XPC_JS_THREW_STRING)" location: "<unknown>" data: no]
    Anyone have any ideas how to work around it???

    This version deals with emptyText as a default color, and shows the color in the trigger. When I figure out the error above I'll post to the Wiki...

    Code:
    /**
     * @class Ext.ux.ColorField
     * @extends Ext.form.TriggerField
     * Provides a color input field with a {@link Ext.ColorPalette} dropdown.
    * @constructor
    * Create a new ColorField
     * <br />Example:
     * <pre><code>
    var color_field = new Ext.ux.ColorField({
    	fieldLabel: 'Color',
    	id: 'color',
    	width: 175,
    	allowBlank: false
    });
    </code></pre>
    * @param {Object} config
     */
    
    Ext.ux.ColorField = Ext.extend(Ext.form.TriggerField,  {
        /**
         * @cfg {String} invalidText
         * The error to display when the color in the field is invalid (defaults to
         * '{value} is not a valid color - it must be in the format {format}').
         */
        invalidText : "'{0}' is not a valid color - it must be in a the hex format (# followed by 3 or 6 letters/numbers 0-9 A-F)",
        /**
         * @cfg {String} triggerClass
         * An additional CSS class used to style the trigger button.  The trigger will always get the
         * class 'x-form-trigger' and triggerClass will be <b>appended</b> if specified (defaults to 'x-form-color-trigger'
         * which displays a color wheel icon).
         */
        triggerClass : 'x-form-color-trigger',
        /**
         * @cfg {String/Object} autoCreate
         * A DomHelper element spec, or true for a default element spec (defaults to
         * {tag: "input", type: "text", size: "10", autocomplete: "off"})
         */
    
        // private
        defaultAutoCreate : {tag: "input", type: "text", size: "10", maxlength: "7", autocomplete: "off"},
    
        // Limit input to hex values
    	maskRe: /[#a-f0-9]/i,
    	
        // private
        validateValue : function(value){
            if(!Ext.ux.ColorField.superclass.validateValue.call(this, value)){
                return false;
            }
            if(value.length < 1){ // if it's blank and textfield didn't flag it then it's valid
            	 this.setColor('');
            	 return true;
            }
    
            var parseOK = this.parseColor(value);
    
            if(!value || (parseOK == false)){
                this.markInvalid(String.format(this.invalidText,value));
                return false;
            }
    		this.setColor(value);
            return true;
        },
    
    	/**
    	 * Sets the current color and changes the background.
    	 * Does *not* change the value of the field.
    	 * @param {String} hex The color value.
    	 */
    	setColor : function(color) {
    		if (color=='' || color==undefined)
    		{
    			if (this.emptyText!='' && this.parseColor(this.emptyText))
    				color=this.emptyText;
    			else
    				color='transparent';
    		}
    		if (this.trigger)
    			this.trigger.setStyle( {
    				'background-color': color
    			});
    		else
    		{
    			this.on('render',function(){this.setColor(color)},this);
    		}
    	},
    	
        // private
        // Provides logic to override the default TriggerField.validateBlur which just returns true
        validateBlur : function(){
            return !this.menu || !this.menu.isVisible();
        },
    
        /**
         * Returns the current value of the color field
         * @return {String} value The color value
         */
        getValue : function(){
            return Ext.ux.ColorField.superclass.getValue.call(this) || "";
        },
    
        /**
         * Sets the value of the color field.  You can pass a string that can be parsed into a valid HTML color
         * <br />Usage:
         * <pre><code>
    		colorField.setValue('#FFFFFF');
           </code></pre>
         * @param {String} color The color string
         */
        setValue : function(color){
            Ext.ux.ColorField.superclass.setValue.call(this, this.formatColor(color));
    		this.setColor( this.formatColor(color));
        },
    
        // private
        parseColor : function(value){
    		return (!value || (value.substring(0,1) != '#')) ?
    			false : (value.length==4 || value.length==7 );
        },
    
        // private
        formatColor : function(value){
    		if (!value || this.parseColor(value))
    			return value;
    		if (value.length==3 || value.length==6) {
    			return '#' + value;
    		}
            return '';
        },
    
        // private
        menuListeners : {
            select: function(e, c){
                this.setValue(c);
            },
            show : function(){ // retain focus styling
                this.onFocus();
            },
            hide : function(){
                this.focus.defer(10, this);
                var ml = this.menuListeners;
                this.menu.un("select", ml.select,  this);
                this.menu.un("show", ml.show,  this);
                this.menu.un("hide", ml.hide,  this);
            }
        },
    
        // private
        // Implements the default empty TriggerField.onTriggerClick function to display the ColorPalette
        onTriggerClick : function(){
            if(this.disabled){
                return;
            }
            if(this.menu == null){
                this.menu = new Ext.menu.ColorMenu();
            }
    
            this.menu.on(Ext.apply({}, this.menuListeners, {
                scope:this
            }));
    
            this.menu.show(this.el, "tl-bl?");
        }
    });
    
    Ext.reg('colorfield',Ext.ux.ColorField);
    CSS:
    Code:
    .x-form-field-wrap .x-form-color-trigger {
    	background-image: url(/themes/common/ac/color-trigger.png);
    }
    
    .ie6 .x-form-field-wrap .x-form-color-trigger {
    	background-image: url(/themes/common/ac/color-trigger.gif);
    }
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  6. #16
    Ext User stevefink's Avatar
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    Just curious... where in Ext's source should I be looking to figure out what exactly the following constructor is trying to do:

    Code:
    Ext.form.ColorField = function(config){
        Ext.form.ColorField.superclass.constructor.call(this, config);
    	this.on('render', this.handleRender);
    };
    I'd like to learn this code better, and I'm not entirely sure where the method on() is defined.

    Thanks!

  7. #17
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    Default setColor() showing error

    setColor() showing error


    I am trying to change the colorfield value. But it is giving error inside setColor() like 'this.el has no properties'.

    Code:
    new Ext.form.ColorField({
    					fieldLabel: 'Color',					
    					id:'colpicker',					
    					showHexValue:true
    				}),
    ............................................
    
    Ext.getCmp('colpicker').setColor('FFFFFF') //error this.el has no properties
    Where i am wrong while changing the color through setColor function ?

  8. #18
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    Sorry, please ignore the previous post. Actually i was calling the setColor() before the colorfield object render.

  9. #19
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    Quote Originally Posted by stever View Post
    I'm having a problem where sometimes FireFox gives this sporatic error:
    Anyone have any ideas how to work around it???
    Yeah, set the autocomplete property of the form (or the input) to 'off'.

  10. #20
    Ext JS Premium Member stever's Avatar
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    It is off already...