paneldd.js

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/*
 * Ext JS Library 2.0 Beta 1
 * Copyright(c) 2006-2007, Ext JS, LLC.
 * [e-mail]
 * 
 * http://extjs.com/license
 */

Ext.dd.PanelProxy = function(panel, config){
    this.panel = panel;
    this.id = this.panel.id +'-ddproxy';
    Ext.apply(this, config);
};

Ext.dd.PanelProxy.prototype = {
    insertProxy : true,
    setStatus : Ext.emptyFn,
    reset : Ext.emptyFn,
    update : Ext.emptyFn,
    stop : Ext.emptyFn,
    sync: Ext.emptyFn,
    
    getEl : function(){
        return this.ghost;
    },

    getGhost : function(){
        return this.ghost;
    },

    getProxy : function(){
        return this.proxy;
    },

    hide : function(){
        if(this.ghost){
            if(this.proxy){
                this.proxy.remove();
                delete this.proxy;
            }
            this.panel.el.dom.style.display = '';
            this.ghost.remove();
            delete this.ghost;
        }
    },

    show : function(){
        if(!this.ghost){
            this.ghost = this.panel.createGhost(undefined, undefined, Ext.getBody());
            this.ghost.setXY(this.panel.el.getXY())
            if(this.insertProxy){
                this.proxy = this.panel.el.insertSibling({cls:'x-panel-dd-spacer'});
                this.proxy.setSize(this.panel.getSize());
            }
            this.panel.el.dom.style.display = 'none';
        }
    },

    repair : function(xy, callback, scope){
        this.hide();
        if(typeof callback == "function"){
            callback.call(scope || this);
        }
    },

    moveProxy : function(parentNode, before){
        if(this.proxy){
            parentNode.insertBefore(this.proxy.dom, before);
        }
    }
};

Ext.Panel.DD = function(panel, cfg){
    this.panel = panel;
    this.dragData = {panel: panel};
    this.proxy = new Ext.dd.PanelProxy(panel, cfg);
    Ext.Panel.DD.superclass.constructor.call(this, panel.el, cfg);
    this.setHandleElId(panel.header.id);
    panel.header.setStyle('cursor', 'move');
    this.scroll = false;
};

Ext.extend(Ext.Panel.DD, Ext.dd.DragSource, {
    showFrame: Ext.emptyFn,
    startDrag: Ext.emptyFn,
    b4StartDrag: function(x, y) {
        this.proxy.show();
    },
    b4MouseDown: function(e) {
        var x = e.getPageX();
        var y = e.getPageY();
        this.autoOffset(x, y);
    },
    onInitDrag : function(x, y){
        this.onStartDrag(x, y);
        return true;
    },
    createFrame : Ext.emptyFn,
    getDragEl : function(e){
        return this.proxy.ghost.dom;
    },
    endDrag : function(e){
        this.proxy.hide();
        this.panel.saveState();
    },

    autoOffset : function(x, y) {
        x -= this.startPageX;
        y -= this.startPageY;
        this.setDelta(x, y);
    }
});