panel.js

一个struts和extjs得源码

        }
    }
});
</code></pre>
     */
    /**
     * @cfg {Boolean} autoHeight
     * True to use height:'auto', false to use fixed height (defaults to false). <b>Note</b>: Setting autoHeight:true 
     * means that the browser will manage the panel's height based on its contents, and that Ext will not manage it at 
     * all. If the panel is within a layout that manages dimensions (fit, border, etc.) then setting autoHeight:true
     * can cause issues with scrolling and will not generally work as expected since the panel will take on the height
     * of its contents rather than the height required by the Ext layout.
     */
    

    /**
    * @cfg {String} baseCls
    * The base CSS class to apply to this panel's element (defaults to 'x-panel').
    */
    baseCls : 'x-panel',
    /**
    * @cfg {String} collapsedCls
    * A CSS class to add to the panel's element after it has been collapsed (defaults to 'x-panel-collapsed').
    */
    collapsedCls : 'x-panel-collapsed',
    /**
    * @cfg {Boolean} maskDisabled
    * True to mask the panel when it is disabled, false to not mask it (defaults to true).  Either way, the panel
    * will always tell its contained elements to disable themselves when it is disabled, but masking the panel
    * can provide an additional visual cue that the panel is disabled.
    */
    maskDisabled: true,
    /**
    * @cfg {Boolean} animCollapse
    * True to animate the transition when the panel is collapsed, false to skip the animation (defaults to true
    * if the {@link Ext.Fx} class is available, otherwise false).
    */
    animCollapse: Ext.enableFx,
    /**
    * @cfg {Boolean} headerAsText
    * True to display the panel title in the header, false to hide it (defaults to true).
    */
    headerAsText: true,
    /**
    * @cfg {String} buttonAlign
    * The alignment of any buttons added to this panel.  Valid values are 'right,' 'left' and 'center' (defaults to 'right').
    */
    buttonAlign: 'right',
    /**
     * @cfg {Boolean} collapsed
     * True to render the panel collapsed, false to render it expanded (defaults to false).
     */
    collapsed : false,
    /**
    * @cfg {Boolean} collapseFirst
    * True to make sure the collapse/expand toggle button always renders first (to the left of) any other tools
    * in the panel's title bar, false to render it last (defaults to true).
    */
    collapseFirst: true,
    /**
     * @cfg {Number} minButtonWidth
     * Minimum width in pixels of all buttons in this panel (defaults to 75)
     */
    minButtonWidth:75,
    /**
     * @cfg {String} elements
     * A comma-delimited list of panel elements to initialize when the panel is rendered.  Normally, this list will be
     * generated automatically based on the items added to the panel at config time, but sometimes it might be useful to
     * make sure a structural element is rendered even if not specified at config time (for example, you may want
     * to add a button or toolbar dynamically after the panel has been rendered).  Adding those elements to this
     * list will allocate the required placeholders in the panel when it is rendered.  Valid values are<ul>
     * <li><b>header</b></li>
     * <li><b>tbar</b> (top bar)</li>
     * <li><b>body</b> (required)</li>
     * <li><b>bbar</b> (bottom bar)</li>
     * <li><b>footer</b><li>
     * </ul>
     * Defaults to 'body'.
     */
    elements : 'body',

    // protected - these could be used to customize the behavior of the window,
    // but changing them would not be useful without further mofifications and
    // could lead to unexpected or undesirable results.
    toolTarget : 'header',
    collapseEl : 'bwrap',
    slideAnchor : 't',
    disabledClass: '',

    // private, notify box this class will handle heights
    deferHeight: true,
    // private
    expandDefaults: {
        duration:.25
    },
    // private
    collapseDefaults: {
        duration:.25
    },

    // private
    initComponent : function(){
        Ext.Panel.superclass.initComponent.call(this);

        this.addEvents(
            /**
             * @event bodyresize
             * Fires after the Panel has been resized.
             * @param {Ext.Panel} p the Panel which has been resized.
             * @param {Number} width The Panel's new width.
             * @param {Number} height The Panel's new height.
             */
            'bodyresize',
            /**
             * @event titlechange
             * Fires after the Panel title has been set or changed.
             * @param {Ext.Panel} p the Panel which has had its title changed.
             * @param {String} The new title.
             */
            'titlechange',
            /**
             * @event iconchange
             * Fires after the Panel icon class has been set or changed.
             * @param {Ext.Panel} p the Panel which has had its icon class changed.
             * @param {String} The new icon class.
             * @param {String} The old icon class.
             */
            'iconchange',
            /**
             * @event collapse
             * Fires after the Panel has been collapsed.
             * @param {Ext.Panel} p the Panel that has been collapsed.
             */
            'collapse',
            /**
             * @event expand
             * Fires after the Panel has been expanded.
             * @param {Ext.Panel} p The Panel that has been expanded.
             */
            'expand',
            /**
             * @event beforecollapse
             * Fires before the Panel is collapsed.  A handler can return false to cancel the collapse.
             * @param {Ext.Panel} p the Panel being collapsed.
             * @param {Boolean} animate True if the collapse is animated, else false.
             */
            'beforecollapse',
            /**
             * @event beforeexpand
             * Fires before the Panel is expanded.  A handler can return false to cancel the expand.
             * @param {Ext.Panel} p The Panel being expanded.
             * @param {Boolean} animate True if the expand is animated, else false.
             */
            'beforeexpand',
            /**
             * @event beforeclose
             * Fires before the Panel is closed.  Note that Panels do not directly support being closed, but some
             * Panel subclasses do (like {@link Ext.Window}).  This event only applies to such subclasses.
             * A handler can return false to cancel the close.
             * @param {Ext.Panel} p The Panel being closed.
             */
            'beforeclose',
            /**
             * @event close
             * Fires after the Panel is closed.  Note that Panels do not directly support being closed, but some
             * Panel subclasses do (like {@link Ext.Window}).
             * @param {Ext.Panel} p The Panel that has been closed.
             */
            'close',
            /**
             * @event activate
             * Fires after the Panel has been visually activated.
             * Note that Panels do not directly support being activated, but some Panel subclasses
             * do (like {@link Ext.Window}). Panels which are child Components of a TabPanel fire the
             * activate and deactivate events under the control of the TabPanel.
             * @param {Ext.Panel} p The Panel that has been activated.
             */
            'activate',
            /**
             * @event deactivate
             * Fires after the Panel has been visually deactivated.
             * Note that Panels do not directly support being deactivated, but some Panel subclasses
             * do (like {@link Ext.Window}). Panels which are child Components of a TabPanel fire the
             * activate and deactivate events under the control of the TabPanel.
             * @param {Ext.Panel} p The Panel that has been deactivated.
             */
            'deactivate'
        );

        // shortcuts
        if(this.tbar){
            this.elements += ',tbar';
            if(typeof this.tbar == 'object'){
                this.topToolbar = this.tbar;
            }
            delete this.tbar;
        }
        if(this.bbar){
            this.elements += ',bbar';
            if(typeof this.bbar == 'object'){
                this.bottomToolbar = this.bbar;
            }
            delete this.bbar;
        }

        if(this.header === true){
            this.elements += ',header';
            delete this.header;
        }else if(this.title && this.header !== false){
            this.elements += ',header';
        }

        if(this.footer === true){
            this.elements += ',footer';
            delete this.footer;
        }

        if(this.buttons){
            var btns = this.buttons;
            /**
             * This Panel's Array of buttons as created from the <tt>buttons</tt>
             * config property. Read only.
             * @type Array
             * @property buttons
             */
            this.buttons = [];
            for(var i = 0, len = btns.length; i < len; i++) {
                if(btns[i].render){ // button instance
                    btns[i].ownerCt = this;
                    this.buttons.push(btns[i]);
                }else{
                    this.addButton(btns[i]);
                }
            }
        }
        if(this.autoLoad){
            this.on('render', this.doAutoLoad, this, {delay:10});
        }
    },

    // private
    createElement : function(name, pnode){
        if(this[name]){
            pnode.appendChild(this[name].dom);
            return;
        }

        if(name === 'bwrap' || this.elements.indexOf(name) != -1){
            if(this[name+'Cfg']){
                this[name] = Ext.fly(pnode).createChild(this[name+'Cfg']);
            }else{
                var el = document.createElement('div');
                el.className = this[name+'Cls'];
                this[name] = Ext.get(pnode.appendChild(el));
            }
            if(this[name+'CssClass']){
                this[name].addClass(this[name+'CssClass']);
            }
            if(this[name+'Style']){
                this[name].applyStyles(this[name+'Style']);
            }
        }
    },

    // private
    onRender : function(ct, position){
        Ext.Panel.superclass.onRender.call(this, ct, position);

        this.createClasses();

        if(this.el){ // existing markup
            this.el.addClass(this.baseCls);
            this.header = this.el.down('.'+this.headerCls);
            this.bwrap = this.el.down('.'+this.bwrapCls);
            var cp = this.bwrap ? this.bwrap : this.el;
            this.tbar = cp.down('.'+this.tbarCls);
            this.body = cp.down('.'+this.bodyCls);
            this.bbar = cp.down('.'+this.bbarCls);
            this.footer = cp.down('.'+this.footerCls);
            this.fromMarkup = true;
        }else{
            this.el = ct.createChild({
                id: this.id,
                cls: this.baseCls
            }, position);
        }
        var el = this.el, d = el.dom;

        if(this.cls){
            this.el.addClass(this.cls);
        }

        if(this.buttons){
            this.elements += ',footer';
        }

        // This block allows for maximum flexibility and performance when using existing markup

        // framing requires special markup
        if(this.frame){
            el.insertHtml('afterBegin', String.format(Ext.Element.boxMarkup, this.baseCls));

            this.createElement('header', d.firstChild.firstChild.firstChild);
            this.createElement('bwrap', d);

            // append the mid and bottom frame to the bwrap
            var bw = this.bwrap.dom;
            var ml = d.childNodes[1], bl = d.childNodes[2];
            bw.appendChild(ml);
            bw.appendChild(bl);

            var mc = bw.firstChild.firstChild.firstChild;
            this.createElement('tbar', mc);
            this.createElement('body', mc);
            this.createElement('bbar', mc);
            this.createElement('footer', bw.lastChild.firstChild.firstChild);

            if(!this.footer){
                this.bwrap.dom.lastChild.className += ' x-panel-nofooter';
            }
        }else{
            this.createElement('header', d);
            this.createElement('bwrap', d);

            // append the mid and bottom frame to the bwrap
            var bw = this.bwrap.dom;
            this.createElement('tbar', bw);
            this.createElement('body', bw);
            this.createElement('bbar', bw);
            this.createElement('footer', bw);

            if(!this.header){
                this.body.addClass(this.bodyCls + '-noheader');
                if(this.tbar){
                    this.tbar.addClass(this.tbarCls + '-noheader');
                }
            }
        }

        if(this.border === false){
            this.el.addClass(this.baseCls + '-noborder');
            this.body.addClass(this.bodyCls + '-noborder');
            if(this.header){
                this.header.addClass(this.headerCls + '-noborder');
            }
            if(this.footer){
                this.footer.addClass(this.footerCls + '-noborder');
            }
            if(this.tbar){
                this.tbar.addClass(this.tbarCls + '-noborder');
            }
            if(this.bbar){
                this.bbar.addClass(this.bbarCls + '-noborder');
            }