libs/cbi/htdocs/luci-static/resources/cbi.js

   1 /*
   2         LuCI - Lua Configuration Interface
   3
   4         Copyright 2008 Steven Barth <steven@midlink.org>
   5         Copyright 2008-2009 Jo-Philipp Wich <xm@subsignal.org>
   6
   7         Licensed under the Apache License, Version 2.0 (the "License");
   8         you may not use this file except in compliance with the License.
   9         You may obtain a copy of the License at
  10
  11         http://www.apache.org/licenses/LICENSE-2.0
  12
  13         $Id$
  14 */
  15
  16 var cbi_d = [];
  17 var cbi_t = [];
  18 var cbi_c = [];
  19
  20 function cbi_d_add(field, dep, next) {
  21         var obj = document.getElementById(field);
  22         if (obj) {
  23                 var entry
  24                 for (var i=0; i<cbi_d.length; i++) {
  25                         if (cbi_d[i].id == field) {
  26                                 entry = cbi_d[i];
  27                                 break;
  28                         }
  29                 }
  30                 if (!entry) {
  31                         entry = {
  32                                 "node": obj,
  33                                 "id": field,
  34                                 "parent": obj.parentNode.id,
  35                                 "next": next,
  36                                 "deps": []
  37                         };
  38                         cbi_d.unshift(entry);
  39                 }
  40                 entry.deps.push(dep)
  41         }
  42 }
  43
  44 function cbi_d_checkvalue(target, ref) {
  45         var t = document.getElementById(target);
  46         var value;
  47
  48         if (!t || !t.value) {
  49                 value = "";
  50         } else {
  51                 value = t.value;
  52
  53                 if (t.type == "checkbox") {
  54                         value = t.checked ? value : "";
  55                 }
  56         }
  57
  58         return (value == ref)
  59 }
  60
  61 function cbi_d_check(deps) {
  62         var reverse;
  63         var def = false;
  64         for (var i=0; i<deps.length; i++) {
  65                 var istat = true;
  66                 reverse = false;
  67                 for (var j in deps[i]) {
  68                         if (j == "!reverse") {
  69                                 reverse = true;
  70                         } else if (j == "!default") {
  71                                 def = true;
  72                                 istat = false;
  73                         } else {
  74                                 istat = (istat && cbi_d_checkvalue(j, deps[i][j]))
  75                         }
  76                 }
  77                 if (istat) {
  78                         return !reverse;
  79                 }
  80         }
  81         return def;
  82 }
  83
  84 function cbi_d_update() {
  85         var state = false;
  86         for (var i=0; i<cbi_d.length; i++) {
  87                 var entry = cbi_d[i];
  88                 var next  = document.getElementById(entry.next)
  89                 var node  = document.getElementById(entry.id)
  90                 var parent = document.getElementById(entry.parent)
  91
  92                 if (node && node.parentNode && !cbi_d_check(entry.deps)) {
  93                         node.parentNode.removeChild(node);
  94                         state = (state || !node.parentNode);
  95                         if( entry.parent )
  96                                 cbi_c[entry.parent]--;
  97                 } else if ((!node || !node.parentNode) && cbi_d_check(entry.deps)) {
  98                         if (!next) {
  99                                 parent.appendChild(entry.node);
 100                         } else {
 101                                 next.parentNode.insertBefore(entry.node, next);
 102                         }
 103                         state = (state || (node && node.parentNode))
 104                         if( entry.parent )
 105                                 cbi_c[entry.parent]++;
 106                 }
 107         }
 108
 109         if (entry.parent) {
 110                 cbi_t_update();
 111         }
 112
 113         if (state) {
 114                 cbi_d_update();
 115         }
 116 }
 117
 118 function cbi_bind(obj, type, callback, mode) {
 119         if (typeof mode == "undefined") {
 120                 mode = false;
 121         }
 122         if (!obj.addEventListener) {
 123                 ieCallback = function(){
 124                         var e = window.event;
 125                         if (!e.target && e.srcElement) {
 126                                 e.target = e.srcElement;
 127                         };
 128                         e.target['_eCB' + type + callback] = callback;
 129                         e.target['_eCB' + type + callback](e);
 130                         e.target['_eCB' + type + callback] = null;
 131                 };
 132                 obj.attachEvent('on' + type, ieCallback);
 133         } else {
 134                 obj.addEventListener(type, callback, mode);
 135         }
 136         return obj;
 137 }
 138
 139 function cbi_combobox(id, values, def, man) {
 140         var selid = "cbi.combobox." + id;
 141         if (document.getElementById(selid)) {
 142                 return
 143         }
 144
 145         var obj = document.getElementById(id)
 146         var sel = document.createElement("select");
 147         sel.id = selid;
 148         sel.className = 'cbi-input-select';
 149         if (obj.nextSibling) {
 150                 obj.parentNode.insertBefore(sel, obj.nextSibling);
 151         } else {
 152                 obj.parentNode.appendChild(sel);
 153         }
 154
 155         if (!values[obj.value]) {
 156                 if (obj.value == "") {
 157                         var optdef = document.createElement("option");
 158                         optdef.value = "";
 159                         optdef.appendChild(document.createTextNode(def));
 160                         sel.appendChild(optdef);
 161                 } else {
 162                         var opt = document.createElement("option");
 163                         opt.value = obj.value;
 164                         opt.selected = "selected";
 165                         opt.appendChild(document.createTextNode(obj.value));
 166                         sel.appendChild(opt);
 167                 }
 168         }
 169
 170         for (var i in values) {
 171                 var opt = document.createElement("option");
 172                 opt.value = i;
 173
 174                 if (obj.value == i) {
 175                         opt.selected = "selected";
 176                 }
 177
 178                 opt.appendChild(document.createTextNode(values[i]));
 179                 sel.appendChild(opt);
 180         }
 181
 182         var optman = document.createElement("option");
 183         optman.value = "";
 184         optman.appendChild(document.createTextNode(man));
 185         sel.appendChild(optman);
 186
 187         obj.style.display = "none";
 188
 189         cbi_bind(sel, "change", function() {
 190                 if (sel.selectedIndex == sel.options.length - 1) {
 191                         obj.style.display = "inline";
 192                         sel.parentNode.removeChild(sel);
 193                         obj.focus();
 194                 } else {
 195                         obj.value = sel.options[sel.selectedIndex].value;
 196                 }
 197
 198                 try {
 199                         cbi_d_update();
 200                 } catch (e) {
 201                         //Do nothing
 202                 }
 203         })
 204 }
 205
 206 function cbi_combobox_init(id, values, def, man) {
 207         var obj = document.getElementById(id);
 208         cbi_bind(obj, "blur", function() {
 209                 cbi_combobox(id, values, def, man)
 210         });
 211         cbi_combobox(id, values, def, man);
 212 }
 213
 214 function cbi_filebrowser(id, url, defpath) {
 215         var field   = document.getElementById(id);
 216         var browser = window.open(
 217                 url + ( field.value || defpath || '' ) + '?field=' + id,
 218                 "luci_filebrowser", "width=300,height=400,left=100,top=200,scrollbars=yes"
 219         );
 220
 221         browser.focus();
 222 }
 223
 224 //Hijacks the CBI form to send via XHR (requires Prototype)
 225 function cbi_hijack_forms(layer, win, fail, load) {
 226         var forms = layer.getElementsByTagName('form');
 227         for (var i=0; i<forms.length; i++) {
 228                 $(forms[i]).observe('submit', function(event) {
 229                         // Prevent the form from also submitting the regular way
 230                         event.stop();
 231
 232                         // Submit via XHR
 233                         event.element().request({
 234                                 onSuccess: win,
 235                                 onFailure: fail
 236                         });
 237
 238                         if (load) {
 239                                 load();
 240                         }
 241                 });
 242         }
 243 }
 244
 245
 246 function cbi_t_add(section, tab) {
 247         var t = document.getElementById('tab.' + section + '.' + tab);
 248         var c = document.getElementById('container.' + section + '.' + tab);
 249
 250         if( t && c ) {
 251                 cbi_t[section] = (cbi_t[section] || [ ]);
 252                 cbi_t[section][tab] = { 'tab': t, 'container': c, 'cid': c.id };
 253         }
 254 }
 255
 256 function cbi_t_switch(section, tab) {
 257         if( cbi_t[section] && cbi_t[section][tab] ) {
 258                 var o = cbi_t[section][tab];
 259                 var h = document.getElementById('tab.' + section);
 260                 for( var tid in cbi_t[section] ) {
 261                         var o2 = cbi_t[section][tid];
 262                         if( o.tab.id != o2.tab.id ) {
 263                                 o2.tab.className = o2.tab.className.replace(/(^| )cbi-tab( |$)/, " cbi-tab-disabled ");
 264                                 o2.container.style.display = 'none';
 265                         }
 266                         else {
 267                                 if(h) h.value = tab;
 268                                 o2.tab.className = o2.tab.className.replace(/(^| )cbi-tab-disabled( |$)/, " cbi-tab ");
 269                                 o2.container.style.display = 'block';
 270                         }
 271                 }
 272         }
 273         return false
 274 }
 275
 276 function cbi_t_update() {
 277         for( var sid in cbi_t )
 278                 for( var tid in cbi_t[sid] )
 279                         if( cbi_c[cbi_t[sid][tid].cid] == 0 ) {
 280                                 cbi_t[sid][tid].tab.style.display = 'none';
 281                         }
 282                         else if( cbi_t[sid][tid].tab && cbi_t[sid][tid].tab.style.display == 'none' ) {
 283                                 cbi_t[sid][tid].tab.style.display = '';
 284
 285                                 var t = cbi_t[sid][tid].tab;
 286                                 window.setTimeout(function() { t.className = t.className.replace(/ cbi-tab-highlighted/g, '') }, 750);
 287                                 cbi_t[sid][tid].tab.className += ' cbi-tab-highlighted';
 288                         }
 289 }
 290