StatusProxy.js
资源名称:ext-3.1.0.zip [点击查看]
上传用户:dawnssy
上传日期:2022-08-06
资源大小:9345k
文件大小:5k
源码类别:
JavaScript
开发平台:
JavaScript
- /*! * Ext JS Library 3.1.0 * Copyright(c) 2006-2009 Ext JS, LLC * licensing@extjs.com * http://www.extjs.com/license */ /**
- * @class Ext.dd.StatusProxy
- * A specialized drag proxy that supports a drop status icon, {@link Ext.Layer} styles and auto-repair. This is the
- * default drag proxy used by all Ext.dd components.
- * @constructor
- * @param {Object} config
- */
- Ext.dd.StatusProxy = function(config){
- Ext.apply(this, config);
- this.id = this.id || Ext.id();
- this.el = new Ext.Layer({
- dh: {
- id: this.id, tag: "div", cls: "x-dd-drag-proxy "+this.dropNotAllowed, children: [
- {tag: "div", cls: "x-dd-drop-icon"},
- {tag: "div", cls: "x-dd-drag-ghost"}
- ]
- },
- shadow: !config || config.shadow !== false
- });
- this.ghost = Ext.get(this.el.dom.childNodes[1]);
- this.dropStatus = this.dropNotAllowed;
- };
- Ext.dd.StatusProxy.prototype = {
- /**
- * @cfg {String} dropAllowed
- * The CSS class to apply to the status element when drop is allowed (defaults to "x-dd-drop-ok").
- */
- dropAllowed : "x-dd-drop-ok",
- /**
- * @cfg {String} dropNotAllowed
- * The CSS class to apply to the status element when drop is not allowed (defaults to "x-dd-drop-nodrop").
- */
- dropNotAllowed : "x-dd-drop-nodrop",
- /**
- * Updates the proxy's visual element to indicate the status of whether or not drop is allowed
- * over the current target element.
- * @param {String} cssClass The css class for the new drop status indicator image
- */
- setStatus : function(cssClass){
- cssClass = cssClass || this.dropNotAllowed;
- if(this.dropStatus != cssClass){
- this.el.replaceClass(this.dropStatus, cssClass);
- this.dropStatus = cssClass;
- }
- },
- /**
- * Resets the status indicator to the default dropNotAllowed value
- * @param {Boolean} clearGhost True to also remove all content from the ghost, false to preserve it
- */
- reset : function(clearGhost){
- this.el.dom.className = "x-dd-drag-proxy " + this.dropNotAllowed;
- this.dropStatus = this.dropNotAllowed;
- if(clearGhost){
- this.ghost.update("");
- }
- },
- /**
- * Updates the contents of the ghost element
- * @param {String/HTMLElement} html The html that will replace the current innerHTML of the ghost element, or a
- * DOM node to append as the child of the ghost element (in which case the innerHTML will be cleared first).
- */
- update : function(html){
- if(typeof html == "string"){
- this.ghost.update(html);
- }else{
- this.ghost.update("");
- html.style.margin = "0";
- this.ghost.dom.appendChild(html);
- }
- var el = this.ghost.dom.firstChild;
- if(el){
- Ext.fly(el).setStyle('float', 'none');
- }
- },
- /**
- * Returns the underlying proxy {@link Ext.Layer}
- * @return {Ext.Layer} el
- */
- getEl : function(){
- return this.el;
- },
- /**
- * Returns the ghost element
- * @return {Ext.Element} el
- */
- getGhost : function(){
- return this.ghost;
- },
- /**
- * Hides the proxy
- * @param {Boolean} clear True to reset the status and clear the ghost contents, false to preserve them
- */
- hide : function(clear){
- this.el.hide();
- if(clear){
- this.reset(true);
- }
- },
- /**
- * Stops the repair animation if it's currently running
- */
- stop : function(){
- if(this.anim && this.anim.isAnimated && this.anim.isAnimated()){
- this.anim.stop();
- }
- },
- /**
- * Displays this proxy
- */
- show : function(){
- this.el.show();
- },
- /**
- * Force the Layer to sync its shadow and shim positions to the element
- */
- sync : function(){
- this.el.sync();
- },
- /**
- * Causes the proxy to return to its position of origin via an animation. Should be called after an
- * invalid drop operation by the item being dragged.
- * @param {Array} xy The XY position of the element ([x, y])
- * @param {Function} callback The function to call after the repair is complete.
- * @param {Object} scope The scope (<code>this</code> reference) in which the callback function is executed. Defaults to the browser window.
- */
- repair : function(xy, callback, scope){
- this.callback = callback;
- this.scope = scope;
- if(xy && this.animRepair !== false){
- this.el.addClass("x-dd-drag-repair");
- this.el.hideUnders(true);
- this.anim = this.el.shift({
- duration: this.repairDuration || .5,
- easing: 'easeOut',
- xy: xy,
- stopFx: true,
- callback: this.afterRepair,
- scope: this
- });
- }else{
- this.afterRepair();
- }
- },
- // private
- afterRepair : function(){
- this.hide(true);
- if(typeof this.callback == "function"){
- this.callback.call(this.scope || this);
- }
- this.callback = null;
- this.scope = null;
- },
- destroy: function(){
- Ext.destroy(this.ghost, this.el);
- }
- };