GZ/nwyj/.svn/pristine/8d/8d0f81be9c54d163e357cbc4e8229e67c27a1400.svn-base

/*
 * Ext JS Library 2.0 Copyright(c) 2006-2007, Ext JS, LLC. licensing@extjs.com
 * 
 * http://extjs.com/license
 */

Ext.data.HttpProxy = function(A) {
	Ext.data.HttpProxy.superclass.constructor.call(this);
	this.conn = A;
	this.useAjax = !A || !A.events
};
Ext.extend(Ext.data.HttpProxy, Ext.data.DataProxy, {
			getConnection : function() {
				return this.useAjax ? Ext.Ajax : this.conn
			},
			load : function(E, B, F, C, A) {
				if (this.fireEvent("beforeload", this, E) !== false) {
					var D = {
						params : E || {},
						request : {
							callback : F,
							scope : C,
							arg : A
						},
						reader : B,
						callback : this.loadResponse,
						scope : this
					};
					if (this.useAjax) {
						Ext.applyIf(D, this.conn);
						if (this.activeRequest) {
							Ext.Ajax.abort(this.activeRequest)
						}
						this.activeRequest = Ext.Ajax.request(D)
					} else {
						this.conn.request(D)
					}
				} else {
					F.call(C || this, null, A, false)
				}
			},
			loadResponse : function(E, D, B) {
				delete this.activeRequest;
				if (!D) {
					this.fireEvent("loadexception", this, E, B);
					E.request.callback.call(E.request.scope, null,
							E.request.arg, false);
					return
				}
				var A;
				try {
					A = E.reader.read(B)
				} catch (C) {
					this.fireEvent("loadexception", this, E, B, C);
					E.request.callback.call(E.request.scope, null,
							E.request.arg, false);
					return
				}
				this.fireEvent("load", this, E, E.request.arg);
				E.request.callback
						.call(E.request.scope, A, E.request.arg, true)
			},
			update : function(A) {
			},
			updateResponse : function(A) {
			}
		});