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alexandre_ |
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/*
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Copyright (c) 2004-2006, The Dojo Foundation
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All Rights Reserved.
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Licensed under the Academic Free License version 2.1 or above OR the
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modified BSD license. For more information on Dojo licensing, see:
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http://dojotoolkit.org/community/licensing.shtml
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*/
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dojo.provide("dojo.widget.TreeLoadingController");
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dojo.require("dojo.widget.TreeBasicController");
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dojo.require("dojo.event.*");
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dojo.require("dojo.json");
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dojo.require("dojo.io.*");
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dojo.widget.defineWidget("dojo.widget.TreeLoadingController", dojo.widget.TreeBasicController, {RPCUrl:"", RPCActionParam:"action", RPCErrorHandler:function (type, obj, evt) {
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alert("RPC Error: " + (obj.message || "no message"));
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}, preventCache:true, getRPCUrl:function (action) {
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if (this.RPCUrl == "local") {
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var dir = document.location.href.substr(0, document.location.href.lastIndexOf("/"));
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var localUrl = dir + "/" + action;
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return localUrl;
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}
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if (!this.RPCUrl) {
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dojo.raise("Empty RPCUrl: can't load");
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}
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return this.RPCUrl + (this.RPCUrl.indexOf("?") > -1 ? "&" : "?") + this.RPCActionParam + "=" + action;
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}, loadProcessResponse:function (node, result, callObj, callFunc) {
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if (!dojo.lang.isUndefined(result.error)) {
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this.RPCErrorHandler("server", result.error);
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return false;
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}
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var newChildren = result;
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if (!dojo.lang.isArray(newChildren)) {
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dojo.raise("loadProcessResponse: Not array loaded: " + newChildren);
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}
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for (var i = 0; i < newChildren.length; i++) {
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newChildren[i] = dojo.widget.createWidget(node.widgetType, newChildren[i]);
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node.addChild(newChildren[i]);
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}
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node.state = node.loadStates.LOADED;
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if (dojo.lang.isFunction(callFunc)) {
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callFunc.apply(dojo.lang.isUndefined(callObj) ? this : callObj, [node, newChildren]);
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}
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}, getInfo:function (obj) {
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return obj.getInfo();
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}, runRPC:function (kw) {
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var _this = this;
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var handle = function (type, data, evt) {
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if (kw.lock) {
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dojo.lang.forEach(kw.lock, function (t) {
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t.unlock();
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});
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}
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if (type == "load") {
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kw.load.call(this, data);
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} else {
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this.RPCErrorHandler(type, data, evt);
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}
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};
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if (kw.lock) {
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dojo.lang.forEach(kw.lock, function (t) {
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t.lock();
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});
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}
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dojo.io.bind({url:kw.url, handle:dojo.lang.hitch(this, handle), mimetype:"text/json", preventCache:_this.preventCache, sync:kw.sync, content:{data:dojo.json.serialize(kw.params)}});
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}, loadRemote:function (node, sync, callObj, callFunc) {
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var _this = this;
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var params = {node:this.getInfo(node), tree:this.getInfo(node.tree)};
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this.runRPC({url:this.getRPCUrl("getChildren"), load:function (result) {
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_this.loadProcessResponse(node, result, callObj, callFunc);
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}, sync:sync, lock:[node], params:params});
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}, expand:function (node, sync, callObj, callFunc) {
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if (node.state == node.loadStates.UNCHECKED && node.isFolder) {
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this.loadRemote(node, sync, this, function (node, newChildren) {
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this.expand(node, sync, callObj, callFunc);
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});
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return;
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}
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dojo.widget.TreeBasicController.prototype.expand.apply(this, arguments);
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}, doMove:function (child, newParent, index) {
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if (newParent.isTreeNode && newParent.state == newParent.loadStates.UNCHECKED) {
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this.loadRemote(newParent, true);
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}
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return dojo.widget.TreeBasicController.prototype.doMove.apply(this, arguments);
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}, doCreateChild:function (parent, index, data, callObj, callFunc) {
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if (parent.state == parent.loadStates.UNCHECKED) {
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this.loadRemote(parent, true);
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}
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return dojo.widget.TreeBasicController.prototype.doCreateChild.apply(this, arguments);
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}});
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