PanelDD.js
资源名称:ext-3.0.0.zip [点击查看]
上传用户:shuoshiled
上传日期:2018-01-28
资源大小:10124k
文件大小:4k
源码类别:
中间件编程
开发平台:
JavaScript
- /*! * Ext JS Library 3.0.0 * Copyright(c) 2006-2009 Ext JS, LLC * licensing@extjs.com * http://www.extjs.com/license */ /**
- * @class Ext.dd.PanelProxy
- * A custom drag proxy implementation specific to {@link Ext.Panel}s. This class is primarily used internally
- * for the Panel's drag drop implementation, and should never need to be created directly.
- * @constructor
- * @param panel The {@link Ext.Panel} to proxy for
- * @param config Configuration options
- */
- Ext.dd.PanelProxy = function(panel, config){
- this.panel = panel;
- this.id = this.panel.id +'-ddproxy';
- Ext.apply(this, config);
- };
- Ext.dd.PanelProxy.prototype = {
- /**
- * @cfg {Boolean} insertProxy True to insert a placeholder proxy element while dragging the panel,
- * false to drag with no proxy (defaults to true).
- */
- insertProxy : true,
- // private overrides
- setStatus : Ext.emptyFn,
- reset : Ext.emptyFn,
- update : Ext.emptyFn,
- stop : Ext.emptyFn,
- sync: Ext.emptyFn,
- /**
- * Gets the proxy's element
- * @return {Element} The proxy's element
- */
- getEl : function(){
- return this.ghost;
- },
- /**
- * Gets the proxy's ghost element
- * @return {Element} The proxy's ghost element
- */
- getGhost : function(){
- return this.ghost;
- },
- /**
- * Gets the proxy's element
- * @return {Element} The proxy's element
- */
- getProxy : function(){
- return this.proxy;
- },
- /**
- * Hides the 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;
- }
- },
- /**
- * Shows the proxy
- */
- 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';
- }
- },
- // private
- repair : function(xy, callback, scope){
- this.hide();
- if(typeof callback == "function"){
- callback.call(scope || this);
- }
- },
- /**
- * Moves the proxy to a different position in the DOM. This is typically called while dragging the Panel
- * to keep the proxy sync'd to the Panel's location.
- * @param {HTMLElement} parentNode The proxy's parent DOM node
- * @param {HTMLElement} before (optional) The sibling node before which the proxy should be inserted (defaults
- * to the parent's last child if not specified)
- */
- moveProxy : function(parentNode, before){
- if(this.proxy){
- parentNode.insertBefore(this.proxy.dom, before);
- }
- }
- };
- // private - DD implementation for Panels
- 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);
- var h = panel.header;
- if(h){
- this.setHandleElId(h.id);
- }
- (h ? h : this.panel.body).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);
- }
- });