/** * e4xd javascript server-side - openmocha reduced to the max * * Copyright 2008 Chris Zumbrunn http://zumbrunn.com * version 0.1, January 11, 2008 * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /** * Resolves url path to page's child element with matching name */ function getChildElement(name) { return this.get(name); } /** * Resolves requests to soft-coded actions before hard-coded ones are invoked */ function OLDTESTonRequest() { // let soft-coded actions override if (req.action == 'notfound' && this.actions[req.action]){ this.actions[req.action].call(this); res.stop(); } } /** * Resolve requests with no automatic match */ function notfound_action(){ var action, output, name; // setup path names to look through var names = req.path.split('/'); // resolve path names against the object hierarchy var page = root; do { if (page.get(names[0])) page = page.get(names[0]); else break; } while (names.shift()); // handle idempotent requests as such idempotentAction = names[0] +='_'+ req.method.toLowerCase(); // call a softcoded action if (page.actions[idempotentAction]) page.actions[idempotentAction].call(page,names); else if (page.actions[names[0]]) page.actions[names[0]].call(page,names); else { output = page.views[names[0]]; if (output.toXMLString()) res.write(output); else res.redirect(page.href()); } } /** * Renders an e4x object from the specified skin object */ function render(skin) { return new XML(this.renderSkinAsString(skin)); } /** * Provides the an array of the path breadcrumbs from * the this Page object up to the root object. */ Page.prototype.__defineGetter__('path',function() { var breadcrumbs = []; var page = this; do { breadcrumbs.push(page); } while (page = page._parent); return breadcrumbs; }); /** * Resolver getters and setters */ Page.resolver = function(handle){ // build resolver function var fnc = function() { // setup closure for current page instance var page = this; // define metaproperty handlers var obj = {__metaobject__:{ // define getter for metaproperties get : function(thisObj,prop) { if (thisObj[prop]) return thisObj[prop]; if (!prop) return prop; var idempotentSuffix = (handle == 'actions' && ( prop.endsWith('_get') || prop.endsWith('_post') || prop.endsWith('_put') || prop.endsWith('_delete'))) ? prop.slice(prop.lastIndexOf('_')+1) : ''; var property, overrider; // lookup an overriding property in this instance's path var next = page; do { // first check if we are looking for idempotent action methods if (idempotentSuffix) { // and then if their is an idempotent override if (next.hasOwnProperty(prop)) { overrider = next; break; } } // then take care of the views, macros, controls and standard actions else if (next.hasOwnProperty(prop +'_'+ handle.slice(0,-1))) { overrider = next; break; } } while (next = next._parent); if (handle == 'views') { // use an overriding view or set default if (overrider) property = createSkin(overrider[prop +'_'+ handle.slice(0,-1)]); else property = prop; // if there is a control for this view, let it handle it first if (page.controls[prop]) property = page.controls[prop].call(page,property); // render the view to e4x if the control has not done so already if (typeof property != 'xml') property = page.render(property); } else { // first handle overrides for idempotent action methods if (overrider && idempotentSuffix) property = overrider[prop]; // then overrides for macros, controls and standard actions else if (overrider) property = overrider[prop +'_'+ handle.slice(0,-1)]; // then idempotent action methods inherited from the prototype chain else if (idempotentSuffix) property = page[prop.slice(0,prop.lastIndexOf('_')) +'_action_'+ idempotentSuffix]; // then macros, controls and standard actions methods inherited from the prototype chain else property = page[prop +'_'+ handle.slice(0,-1)]; } // return the resolved property return property; }, // define setter for metaproperties set : function(thisObj,prop,value) { // set the idempotent action if (prop.endsWith('_get') || prop.endsWith('_post') || prop.endsWith('_put') || prop.endsWith('_delete')) page[prop] = value; // or set views, controls and standard actions else page[prop +'_'+ handle.slice(0,-1)] = value; } }}; // return object containing metaproperty handlers return obj; } // return the built resolver function return fnc; } /** * Handles views object, resolving to appropriate getters and setters */ Page.prototype.__defineGetter__('views',Page.resolver('views')) /** * Handles controls object, resolving to appropriate getters and setters */ Page.prototype.__defineGetter__('controls',Page.resolver('controls')) /** * Handles actions object, resolving to appropriate getters and setters */ Page.prototype.__defineGetter__('actions',Page.resolver('actions')) /** * Handles macros object, resolving to appropriate getters and setters */ Page.prototype.__defineGetter__('macros',Page.resolver('macros')) /** * Serialize otherwise unpersisted objects with matching suffixes */ function onPersist(){ for (var i in this) { if (i.endsWith('_json')) this[i+'_'] = this[i].toJSON(); else if (i.endsWith('_e4x')) this[i+'_'] = this[i].toXMLString(); else if (i.endsWith('_action') || i.endsWith('_action_get') || i.endsWith('_action_post') || i.endsWith('_action_put') || i.endsWith('_action_delete') || i.endsWith('_control') || i.endsWith('_macro')) this[i+'_'] = this[i].toSource() .slice(this[i].toSource().indexOf('{')+1, this[i].toSource().lastIndexOf('}')) } } /** * Unserialize specially persisted objects with matching suffixes */ function onInit() { for (var i in this) { if (i.endsWith('_json_')) this[i.slice(0,-1)] = this[i].parseJSON(); else if (i.endsWith('_e4x_')) this[i.slice(0,-1)] = new XML(this[i]); else if (i.endsWith('_action_') || i.endsWith('_action_get_') || i.endsWith('_action_post_') || i.endsWith('_action_put_') || i.endsWith('_action_delete_') || i.endsWith('_control_') || i.endsWith('_macro_')) this[i.slice(0,-1)] = new Function(this[i]); } }