# Layout.js

    /**
     * @class Ext.form.Layout
     * @extends Ext.Component
     * Creates a container for layout and rendering of fields in an {@link Ext.form.Form}.
     * @constructor
     * @param {Object} config Configuration options
     */
    Ext.form.Layout = function(config){
        Ext.form.Layout.superclass.constructor.call(this, config);
        this.stack = [];
    };

    Ext.extend(Ext.form.Layout, Ext.Component, {
        /**
         * @cfg {String/Object} autoCreate
         * A DomHelper element spec used to autocreate the layout (defaults to {tag: 'div', cls: 'x-form-ct'})
         */
    // holder
    /***
         * @cfg {String/Object/Function} style
         * A style specification string eg "width:100px", or object in the form {width:"100px"}, or
         * a function which returns such a specification.
         */
    // holder
    /***
         * @cfg {String} labelAlign
         * Valid values are "left," "top" and "right" (defaults to "left")
         */
    // holder
    /***
         * @cfg {Number} labelWidth
         * Fixed width in pixels of all field labels (defaults to undefined)
         */
    // holder
    /***
         * @cfg {Boolean} clear
         * True to add a clearing element at the end of this layout, equivalent to CSS clear: both (defaults to true)
         */
        clear : true,
        /**
         * @cfg {String} labelSeparator
         * The separator to use after field labels (defaults to ':')
         */
        labelSeparator : ':',
        /**
         * @cfg {Boolean} hideLabels
         * True to suppress the display of field labels in this layout (defaults to false)
         */
        hideLabels : false,

        // private
        defaultAutoCreate : {tag: 'div', cls: 'x-form-ct'},

        // private
        onRender : function(ct, position){
            if(this.el){ // from markup
                this.el = Ext.get(this.el);
            }else {  // generate
                var cfg = this.getAutoCreate();
                this.el = ct.createChild(cfg, position);
            }
            if(this.style){
                this.el.applyStyles(this.style);
            }
            if(this.labelAlign){
                this.el.addClass('x-form-label-'+this.labelAlign);
            }
            if(this.hideLabels){
                this.labelStyle = "display:none";
                this.elementStyle = "padding-left:0;";
            }else{
                if(typeof this.labelWidth == 'number'){
                    this.labelStyle = "width:"+this.labelWidth+"px;";
                    this.elementStyle = "padding-left:"+((this.labelWidth+(typeof this.labelPad == 'number' ? this.labelPad : 5))+'px')+";";
                }
                if(this.labelAlign == 'top'){
                    this.labelStyle = "width:auto;";
                    this.elementStyle = "padding-left:0;";
                }
            }
            var stack = this.stack;
            var slen = stack.length;
            if(slen > 0){
                if(!this.fieldTpl){
                    var t = new Ext.Template(
                        '<div class="x-form-item {5}">',
                            '<label for="{0}" style="{2}">{1}{4}</label>',
                            '<div class="x-form-element" id="x-form-el-{0}" style="{3}">',
                            '</div>',
                        '</div><div class="x-form-clear-left"></div>'
                    );
                    t.disableFormats = true;
                    t.compile();
                    Ext.form.Layout.prototype.fieldTpl = t;
                }
                for(var i = 0; i < slen; i++) {
                    if(stack[i].isFormField){
                        this.renderField(stack[i]);
                    }else{
                        this.renderComponent(stack[i]);
                    }
                }
            }
            if(this.clear){
                this.el.createChild({cls:'x-form-clear'});
            }
        },

        // private
        renderField : function(f){
           this.fieldTpl.append(this.el, [
                   f.id, f.fieldLabel,
                   f.labelStyle||this.labelStyle||'',
                   this.elementStyle||'',
                   typeof f.labelSeparator == 'undefined' ? this.labelSeparator : f.labelSeparator,
                   f.itemCls||this.itemCls||''
           ]);
        },

        // private
        renderComponent : function(c){
            c.render(this.el);
        }
    });

    /**
     * @class Ext.form.Column
     * @extends Ext.form.Layout
     * Creates a column container for layout and rendering of fields in an {@link Ext.form.Form}.
     * @constructor
     * @param {Object} config Configuration options
     */
    Ext.form.Column = function(config){
        Ext.form.Column.superclass.constructor.call(this, config);
    };

    Ext.extend(Ext.form.Column, Ext.form.Layout, {
        /**
         * @cfg {Number} width
         * The fixed width of the column in pixels (defaults to auto)
         */
    // holder
    /***
         * @cfg {String/Object} autoCreate
         * A DomHelper element spec used to autocreate the column (defaults to {tag: 'div', cls: 'x-form-ct x-form-column'})
         */

        // private
        defaultAutoCreate : {tag: 'div', cls: 'x-form-ct x-form-column'},

        // private
        onRender : function(ct, position){
            Ext.form.Column.superclass.onRender.call(this, ct, position);
            if(this.width){
                this.el.setWidth(this.width);
            }
        }
    });

    /**
     * @class Ext.form.FieldSet
     * @extends Ext.form.Layout
     * Creates a fieldset container for layout and rendering of fields in an {@link Ext.form.Form}.
     * @constructor
     * @param {Object} config Configuration options
     */
    Ext.form.FieldSet = function(config){
        Ext.form.FieldSet.superclass.constructor.call(this, config);
    };

    Ext.extend(Ext.form.FieldSet, Ext.form.Layout, {
        /**
         * @cfg {String} legend
         * The text to display as the legend for the FieldSet (defaults to '')
         */
    // holder
    /***
         * @cfg {String/Object} autoCreate
         * A DomHelper element spec used to autocreate the fieldset (defaults to {tag: 'fieldset', cn: {tag:'legend'}})
         */

        // private
        defaultAutoCreate : {tag: 'fieldset', cn: {tag:'legend'}},

        // private
        onRender : function(ct, position){
            Ext.form.FieldSet.superclass.onRender.call(this, ct, position);
            if(this.legend){
                this.setLegend(this.legend);
            }
        },

        // private
        setLegend : function(text){
            if(this.rendered){
                this.el.child('legend').update(text);
            }
        }
    });

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