1 /* ---------------------------------------------------------------------------
2 * Copyright (C) 2008 Georgia Public Library Service
3 * Bill Erickson <erickson@esilibrary.com>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 * ---------------------------------------------------------------------------
19 * General purpose, static utility functions
22 if(!dojo._hasResource["openils.Util"]) {
23 dojo._hasResource["openils.Util"] = true;
24 dojo.provide("openils.Util");
25 dojo.require('openils.Event');
26 dojo.declare('openils.Util', null, {});
30 * Wrapper for dojo.addOnLoad that verifies a valid login session is active
31 * before adding the function to the onload set
33 openils.Util.addOnLoad = function(func, noSes) {
36 dojo.require('openils.User');
37 if(!openils.User.authtoken)
40 console.log("adding onload " + func.name);
46 * Returns true if the provided array contains the specified value
48 openils.Util.arrayContains = function(arr, val) {
49 for(var i = 0; arr && i < arr.length; i++) {
57 * Given a HTML select object, returns the currently selected value
59 openils.Util.selectorValue = function(sel) {
61 var idx = sel.selectedIndex;
62 if(idx < 0) return null;
63 var o = sel.options[idx];
65 if(v == null) v = o.innerHTML;
70 * Returns the character code of the provided (or current window) event
72 openils.Util.getCharCode = function(evt) {
73 evt = (evt) ? evt : ((window.event) ? event : null);
75 return (evt.charCode ? evt.charCode :
76 ((evt.which) ? evt.which : evt.keyCode ));
82 * Registers a handler for when the Enter key is pressed while
83 * the provided DOM node has focus.
85 openils.Util.registerEnterHandler = function(domNode, func) {
86 if(!(domNode && func)) return;
87 domNode.onkeydown = function(evt) {
88 var code = openils.Util.getCharCode(evt);
89 if(code == 13 || code == 3)
96 * Parses opensrf response objects to see if they contain
97 * data and/or an ILS event. This only calls request.recv()
98 * once, so in a streaming context, it's necessary to loop on
100 * @param r The OpenSRF Request object
101 * @param eventOK If true, any found events will be returned as responses.
102 * If false, they will be treated as error conditions and their content will
103 * be alerted if openils.Util.alertEvent is set to true. Also, if eventOk is
104 * false, the response content will be null when an event is encountered.
105 * @param isList If true, assume the response will be a list of data and
106 * check the 1st item in the list for event-ness instead of the list itself.
108 openils.Util.alertEvent = true;
109 openils.Util.readResponse = function(r, eventOk, isList) {
111 if(msg == null) return msg;
112 var val = msg.content();
114 if(isList && dojo.isArray(val))
116 if(e = openils.Event.parse(testval)) {
117 if(eventOk) return e;
118 console.log(e.toString());
119 if(openils.Util.alertEvent)
128 * Given a DOM node, adds the provided class to the node
130 openils.Util.addCSSClass = function(node, cls) {
131 if(!(node && cls)) return;
132 var className = node.className;
135 node.className = cls;
139 var classList = className.split(/\s+/);
142 for (var i = 0; i < classList.length; i++) {
143 if(classList[i] == cls) return;
144 if(classList[i] != null)
145 newName += classList[i] + " ";
149 node.className = newName;
153 * Given a DOM node, removes the provided class from the CSS class
156 openils.Util.removeCSSClass = function(node, cls) {
157 if(!(node && cls && node.className)) return;
158 var classList = node.className.split(/\s+/);
160 for(var i = 0; i < classList.length; i++) {
161 if (typeof(cls) == "object") { /* assume regex */
162 if (!cls.test(classList[i])) {
164 className = classList[i];
166 className += ' ' + classList[i];
169 if (classList[i] != cls) {
171 className = classList[i];
173 className += ' ' + classList[i];
177 node.className = className;
180 openils.Util.objectSort = function(list, field) {
181 if(dojo.isArray(list)) {
182 if(!field) field = 'id';
185 if(a[field]() > b[field]()) return 1;
193 openils.Util.isTrue = function(val) {
194 return (val && val != '0' && !(val+'').match(/^f$/i));
198 * Turns a list into a mapped object.
199 * @param list The list
200 * @param pkey The field to use as the map key
201 * @param isFunc If true, the map key field is an accessor function
202 * that will return the value of the map key
204 openils.Util.mapList = function(list, pkey, isFunc) {
210 map[list[i][pkey]()] = list[i];
212 map[list[i][pkey]] = list[i];
218 * Assume a space-separated interval string, with optional comma
219 * E.g. "1 year, 2 days" "3 days 6 hours"
221 openils.Util.intervalToSeconds = function(interval) {
223 var start = d.getTime();
224 var parts = interval.split(' ');
225 for(var i = 0; i < parts.length; i += 2)
226 d = dojo.date.add(d, parts[i+1].replace(/s?,?$/,''), Number(parts[i]));
227 return Number((d.getTime() - start) / 1000);
230 openils.Util.hide = function(node) {
231 if(typeof node == 'string')
232 node = dojo.byId(node);
233 dojo.style(node, 'display', 'none');
234 dojo.style(node, 'visibility', 'hidden');
237 openils.Util.show = function(node, displayType) {
238 if(typeof node == 'string')
239 node = dojo.byId(node);
240 displayType = displayType || 'block';
241 dojo.style(node, 'display', displayType);
242 dojo.style(node, 'visibility', 'visible');
245 /** Toggles the display using show/hide, depending on the current value for CSS 'display' */
246 openils.Util.toggle = function(node, displayType) {
247 if(typeof node == 'string')
248 node = dojo.byId(node);
249 if(dojo.style(node, 'display') == 'none')
250 openils.Util.show(node, displayType);
252 openils.Util.hide(node);
255 openils.Util.appendClear = function(node, child) {
256 if(typeof node == 'string')
257 node = dojo.byId(node);
258 while(node.childNodes[0])
259 node.removeChild(node.childNodes[0]);
260 node.appendChild(child);
264 * Plays a sound file via URL. Only works with browsers
265 * that support HTML 5 <audio> element. E.g. Firefox 3.5
267 openils.Util.playAudioUrl = function(urlString) {
268 if(!urlString) return;
269 var audio = document.createElement('audio');
270 audio.setAttribute('src', urlString);
271 audio.setAttribute('autoplay', 'true');
272 document.body.appendChild(audio);
273 document.body.removeChild(audio);
277 * Return the properties of an object as a list. Saves typing.
279 openils.Util.objectProperties = function(obj) {
281 for (var k in obj) K.push(k);
285 openils.Util.uniqueElements = function(L) {
287 for (var k in L) o[L[k]] = true;
288 return openils.Util.objectProperties(o);