/*
This file is part of Ext JS 3.4

Copyright (c) 2011-2013 Sencha Inc

Contact:  http://www.sencha.com/contact

GNU General Public License Usage
This file may be used under the terms of the GNU General Public License version 3.0 as
published by the Free Software Foundation and appearing in the file LICENSE included in the
packaging of this file.

Please review the following information to ensure the GNU General Public License version 3.0
requirements will be met: http://www.gnu.org/copyleft/gpl.html.

If you are unsure which license is appropriate for your use, please contact the sales department
at http://www.sencha.com/contact.

Build date: 2013-04-03 15:07:25
*/
/**
 * @class Ext.form.Checkbox
 * @extends Ext.form.Field
 * Single checkbox field.  Can be used as a direct replacement for traditional checkbox fields.
 * @constructor
 * Creates a new Checkbox
 * @param {Object} config Configuration options
 * @xtype checkbox
 */
Ext.form.Checkbox = Ext.extend(Ext.form.Field,  {
    /**
     * @cfg {String} focusClass The CSS class to use when the checkbox receives focus (defaults to undefined)
     */
    focusClass : undefined,
    /**
     * @cfg {String} fieldClass The default CSS class for the checkbox (defaults to 'x-form-field')
     */
    fieldClass : 'x-form-field',
    /**
     * @cfg {Boolean} checked <tt>true</tt> if the checkbox should render initially checked (defaults to <tt>false</tt>)
     */
    checked : false,
    /**
     * @cfg {String} boxLabel The text that appears beside the checkbox
     */
    boxLabel: '&#160;',
    /**
     * @cfg {String/Object} autoCreate A DomHelper element spec, or true for a default element spec (defaults to
     * {tag: 'input', type: 'checkbox', autocomplete: 'off'})
     */
    defaultAutoCreate : { tag: 'input', type: 'checkbox', autocomplete: 'off'},
    /**
     * @cfg {String} inputValue The value that should go into the generated input element's value attribute
     */
    /**
     * @cfg {Function} handler A function called when the {@link #checked} value changes (can be used instead of
     * handling the check event). The handler is passed the following parameters:
     * <div class="mdetail-params"><ul>
     * <li><b>checkbox</b> : Ext.form.Checkbox<div class="sub-desc">The Checkbox being toggled.</div></li>
     * <li><b>checked</b> : Boolean<div class="sub-desc">The new checked state of the checkbox.</div></li>
     * </ul></div>
     */
    /**
     * @cfg {Object} scope An object to use as the scope ('this' reference) of the {@link #handler} function
     * (defaults to this Checkbox).
     */

    // private
    actionMode : 'wrap',

	// private
    initComponent : function(){
        Ext.form.Checkbox.superclass.initComponent.call(this);
        this.addEvents(
            /**
             * @event check
             * Fires when the checkbox is checked or unchecked.
             * @param {Ext.form.Checkbox} this This checkbox
             * @param {Boolean} checked The new checked value
             */
            'check'
        );
    },

    // private
    onResize : function(){
        Ext.form.Checkbox.superclass.onResize.apply(this, arguments);
        if(!this.boxLabel && !this.fieldLabel){
            this.el.alignTo(this.wrap, 'c-c');
        }
    },

    // private
    initEvents : function(){
        Ext.form.Checkbox.superclass.initEvents.call(this);
        this.mon(this.el, {
            scope: this,
            click: this.onClick,
            change: this.onClick
        });
    },

    /**
     * @hide
     * Overridden and disabled. The editor element does not support standard valid/invalid marking.
     * @method
     */
    markInvalid : Ext.emptyFn,
    /**
     * @hide
     * Overridden and disabled. The editor element does not support standard valid/invalid marking.
     * @method
     */
    clearInvalid : Ext.emptyFn,

    // private
    onRender : function(ct, position){
        Ext.form.Checkbox.superclass.onRender.call(this, ct, position);
        if(this.inputValue !== undefined){
            this.el.dom.value = this.inputValue;
        }
        this.wrap = this.el.wrap({cls: 'x-form-check-wrap'});
        if(this.boxLabel){
            this.wrap.createChild({tag: 'label', htmlFor: this.el.id, cls: 'x-form-cb-label', html: this.boxLabel});
        }
        if(this.checked){
            this.setValue(true);
        }else{
            this.checked = this.el.dom.checked;
        }
        // Need to repaint for IE, otherwise positioning is broken
        if (Ext.isIEQuirks) {
            this.wrap.repaint();
        }
        this.resizeEl = this.positionEl = this.wrap;
    },

    // private
    onDestroy : function(){
        Ext.destroy(this.wrap);
        Ext.form.Checkbox.superclass.onDestroy.call(this);
    },

    // private
    initValue : function() {
        this.originalValue = this.getValue();
    },

    /**
     * Returns the checked state of the checkbox.
     * @return {Boolean} True if checked, else false
     */
    getValue : function(){
        if(this.rendered){
            return this.el.dom.checked;
        }
        return this.checked;
    },

	// private
    onClick : function(){
        if(this.el.dom.checked != this.checked){
            this.setValue(this.el.dom.checked);
        }
    },

    /**
     * Sets the checked state of the checkbox, fires the 'check' event, and calls a
     * <code>{@link #handler}</code> (if configured).
     * @param {Boolean/String} checked The following values will check the checkbox:
     * <code>true, 'true', '1', or 'on'</code>. Any other value will uncheck the checkbox.
     * @return {Ext.form.Field} this
     */
    setValue : function(v){
        var checked = this.checked,
            inputVal = this.inputValue;
            
        if (v === false) {
            this.checked = false;
        } else {
            this.checked = (v === true || v === 'true' || v == '1' || (inputVal ? v == inputVal : String(v).toLowerCase() == 'on'));
        }
        
        if(this.rendered){
            this.el.dom.checked = this.checked;
            this.el.dom.defaultChecked = this.checked;
        }
        if(checked != this.checked){
            this.fireEvent('check', this, this.checked);
            if(this.handler){
                this.handler.call(this.scope || this, this, this.checked);
            }
        }
        return this;
    }
});
Ext.reg('checkbox', Ext.form.Checkbox);
