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         for (var i=0; i<deps.length; i++) {
  63                 var istat = true
  64                 for (var j in deps[i]) {
  65                         istat = (istat && cbi_d_checkvalue(j, deps[i][j]))
  66                 }
  67                 if (istat) {
  68                         return true
  69                 }
  70         }
  71 }
  72
  73 function cbi_d_update() {
  74         var state = false;
  75         for (var i=0; i<cbi_d.length; i++) {
  76                 var entry = cbi_d[i];
  77                 var next  = document.getElementById(entry.next)
  78                 var node  = document.getElementById(entry.id)
  79                 var parent = document.getElementById(entry.parent)
  80
  81                 if (node && node.parentNode && !cbi_d_check(entry.deps)) {
  82                         node.parentNode.removeChild(node);
  83                         state = (state || !node.parentNode);
  84                         if( entry.parent )
  85                                 cbi_c[entry.parent]--;
  86                 } else if ((!node || !node.parentNode) && cbi_d_check(entry.deps)) {
  87                         if (!next) {
  88                                 parent.appendChild(entry.node);
  89                         } else {
  90                                 next.parentNode.insertBefore(entry.node, next);
  91                         }
  92                         state = (state || (node && node.parentNode))
  93                         if( entry.parent )
  94                                 cbi_c[entry.parent]++;
  95                 }
  96         }
  97
  98         if (entry.parent) {
  99                 cbi_t_update();
 100         }
 101
 102         if (state) {
 103                 cbi_d_update();
 104         }
 105 }
 106
 107 function cbi_bind(obj, type, callback, mode) {
 108         if (typeof mode == "undefined") {
 109                 mode = false;
 110         }
 111         if (!obj.addEventListener) {
 112                 ieCallback = function(){
 113                         var e = window.event;
 114                         if (!e.target && e.srcElement) {
 115                                 e.target = e.srcElement;
 116                         };
 117                         e.target['_eCB' + type + callback] = callback;
 118                         e.target['_eCB' + type + callback](e);
 119                         e.target['_eCB' + type + callback] = null;
 120                 };
 121                 obj.attachEvent('on' + type, ieCallback);
 122         } else {
 123                 obj.addEventListener(type, callback, mode);
 124         }
 125         return obj;
 126 }
 127
 128 function cbi_combobox(id, values, def, man) {
 129         var selid = "cbi.combobox." + id;
 130         if (document.getElementById(selid)) {
 131                 return
 132         }
 133
 134         var obj = document.getElementById(id)
 135         var sel = document.createElement("select");
 136         sel.id = selid;
 137         sel.className = 'cbi-input-select';
 138         if (obj.nextSibling) {
 139                 obj.parentNode.insertBefore(sel, obj.nextSibling);
 140         } else {
 141                 obj.parentNode.appendChild(sel);
 142         }
 143
 144         if (!values[obj.value]) {
 145                 if (obj.value == "") {
 146                         var optdef = document.createElement("option");
 147                         optdef.value = "";
 148                         optdef.appendChild(document.createTextNode(def));
 149                         sel.appendChild(optdef);
 150                 } else {
 151                         var opt = document.createElement("option");
 152                         opt.value = obj.value;
 153                         opt.selected = "selected";
 154                         opt.appendChild(document.createTextNode(obj.value));
 155                         sel.appendChild(opt);
 156                 }
 157         }
 158
 159         for (var i in values) {
 160                 var opt = document.createElement("option");
 161                 opt.value = i;
 162
 163                 if (obj.value == i) {
 164                         opt.selected = "selected";
 165                 }
 166
 167                 opt.appendChild(document.createTextNode(values[i]));
 168                 sel.appendChild(opt);
 169         }
 170
 171         var optman = document.createElement("option");
 172         optman.value = "";
 173         optman.appendChild(document.createTextNode(man));
 174         sel.appendChild(optman);
 175
 176         obj.style.display = "none";
 177
 178         cbi_bind(sel, "change", function() {
 179                 if (sel.selectedIndex == sel.options.length - 1) {
 180                         obj.style.display = "inline";
 181                         sel.parentNode.removeChild(sel);
 182                         obj.focus();
 183                 } else {
 184                         obj.value = sel.options[sel.selectedIndex].value;
 185                 }
 186
 187                 try {
 188                         cbi_d_update();
 189                 } catch (e) {
 190                         //Do nothing
 191                 }
 192         })
 193 }
 194
 195 function cbi_combobox_init(id, values, def, man) {
 196         var obj = document.getElementById(id);
 197         cbi_bind(obj, "blur", function() {
 198                 cbi_combobox(id, values, def, man)
 199         });
 200         cbi_combobox(id, values, def, man);
 201 }
 202
 203 function cbi_filebrowser(id, url, defpath) {
 204         var field   = document.getElementById(id);
 205         var browser = window.open(
 206                 url + ( field.value || defpath || '' ) + '?field=' + id,
 207                 "luci_filebrowser", "width=300,height=400,left=100,top=200,scrollbars=yes"
 208         );
 209
 210         browser.focus();
 211 }
 212
 213 //Hijacks the CBI form to send via XHR (requires Prototype)
 214 function cbi_hijack_forms(layer, win, fail, load) {
 215         var forms = layer.getElementsByTagName('form');
 216         for (var i=0; i<forms.length; i++) {
 217                 $(forms[i]).observe('submit', function(event) {
 218                         // Prevent the form from also submitting the regular way
 219                         event.stop();
 220
 221                         // Submit via XHR
 222                         event.element().request({
 223                                 onSuccess: win,
 224                                 onFailure: fail
 225                         });
 226
 227                         if (load) {
 228                                 load();
 229                         }
 230                 });
 231         }
 232 }
 233
 234
 235 function cbi_t_add(section, tab) {
 236         var t = document.getElementById('tab.' + section + '.' + tab);
 237         var c = document.getElementById('container.' + section + '.' + tab);
 238
 239         if( t && c ) {
 240                 cbi_t[section] = (cbi_t[section] || [ ]);
 241                 cbi_t[section][tab] = { 'tab': t, 'container': c, 'cid': c.id };
 242         }
 243 }
 244
 245 function cbi_t_switch(section, tab) {
 246         if( cbi_t[section] && cbi_t[section][tab] ) {
 247                 var o = cbi_t[section][tab];
 248                 var h = document.getElementById('tab.' + section);
 249                 for( var tid in cbi_t[section] ) {
 250                         var o2 = cbi_t[section][tid];
 251                         if( o.tab.id != o2.tab.id ) {
 252                                 o2.tab.className = o2.tab.className.replace(/(^| )cbi-tab( |$)/, " cbi-tab-disabled ");
 253                                 o2.container.style.display = 'none';
 254                         }
 255                         else {
 256                                 if(h) h.value = tab;
 257                                 o2.tab.className = o2.tab.className.replace(/(^| )cbi-tab-disabled( |$)/, " cbi-tab ");
 258                                 o2.container.style.display = 'block';
 259                         }
 260                 }
 261         }
 262         return false
 263 }
 264
 265 function cbi_t_update() {
 266         for( var sid in cbi_t )
 267                 for( var tid in cbi_t[sid] )
 268                         if( cbi_c[cbi_t[sid][tid].cid] == 0 ) {
 269                                 cbi_t[sid][tid].tab.style.display = 'none';
 270                         }
 271                         else if( cbi_t[sid][tid].tab && cbi_t[sid][tid].tab.style.display == 'none' ) {
 272                                 cbi_t[sid][tid].tab.style.display = '';
 273
 274                                 var t = cbi_t[sid][tid].tab;
 275                                 window.setTimeout(function() { t.className = t.className.replace(/ cbi-tab-highlighted/g, '') }, 750);
 276                                 cbi_t[sid][tid].tab.className += ' cbi-tab-highlighted';
 277                         }
 278 }
 279