126 lines
3.1 KiB
JavaScript
126 lines
3.1 KiB
JavaScript
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/**
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* Some general functions we need for the frontend
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*
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* @author Florian Ziegler <fz@f10-home.de>
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* @author Justin Otherguy <justin@justinotherguy.org>
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* @author Steffen Vogel <info@steffenvogel.de>
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* @copyright Copyright (c) 2010, The volkszaehler.org project
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* @package default
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* @license http://opensource.org/licenses/gpl-license.php GNU Public License
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*/
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/*
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* This file is part of volkzaehler.org
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*
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* volkzaehler.org is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation, either version 3 of the License, or any later version.
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*
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* volkzaehler.org is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* volkszaehler.org. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* Helper function to wait for multiple ajax requests to complete
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*/
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vz.wait = function(callback, finished, identifier) {
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if (!vz.wait.counter) { vz.wait.counter = new Array(); }
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if (!vz.wait.counter[identifier]) { vz.wait.counter[identifier] = 0; }
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vz.wait.counter[identifier]++;
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return function (data, textStatus) {
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callback(data, textStatus);
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if (!--vz.wait.counter[identifier]) {
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finished();
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}
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};
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};
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/**
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* Universal helper for backend ajax requests with error handling
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*/
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vz.load = function(args) {
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$.extend(args, {
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url: this.options.backendUrl,
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dataType: 'json',
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error: function(xhr) {
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json = JSON.parse(xhr.responseText);
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vz.wui.dialogs.error(xhr.statusText, json.exception.message, xhr.status);
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}
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});
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if (args.context) {
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args.url += '/' + args.context;
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}
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if (args.identifier) {
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args.url += '/' + args.identifier;
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}
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args.url += '.json';
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$.ajax(args);
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};
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/**
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* Parse URL GET parameters
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*/
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vz.parseUrlParams = function() {
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var vars = $.getUrlParams();
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for (var key in vars) {
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if (vars.hasOwnProperty(key)) {
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switch (key) {
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case 'uuid': // add optional uuid from url
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var uuids = (typeof vars[key] == 'string') ? [vars[key]] : vars[key]; // handle multiple uuids
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uuids.each(function(index, uuid) {
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try { vz.uuids.add(uuid); } catch (exception) { /* ignore exception */ }
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});
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break;
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case 'from':
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vz.options.plot.xaxis.min = parseInt(vars[key]);
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break;
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case 'to':
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vz.options.plot.xaxis.max = parseInt(vars[key]);
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break;
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case 'debug':
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$.getScript('javascripts/firebug-lite.js');
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break;
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}
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}
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}
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};
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/**
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* Load capabilities from backend
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*/
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vz.capabilities.load = function() {
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vz.load({
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context: 'capabilities',
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identifier: 'definitions',
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success: function(json) {
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$.extend(true, vz.capabilities, json.capabilities);
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// load entity details
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vz.entities.loadDetails();
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}
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});
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};
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/**
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* Lookup definition
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*/
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vz.capabilities.definitions.get = function(section, name) {
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for (var i in this[section]) {
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if (this[section][i].name == name) {
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return this[section][i];
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}
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}
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}
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