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
  19 function cbi_d_add(field, dep, next) {
  20         var obj = document.getElementById(field);
  21         if (obj) {
  22                 var entry
  23                 for (var i=0; i<cbi_d.length; i++) {
  24                         if (cbi_d[i].id == field) {
  25                                 entry = cbi_d[i];
  26                                 break;
  27                         }
  28                 }
  29                 if (!entry) {
  30                         entry = {
  31                                 "node": obj,
  32                                 "id": field,
  33                                 "parent": obj.parentNode.id,
  34                                 "next": next,
  35                                 "deps": []
  36                         };
  37                         cbi_d.unshift(entry);
  38                 }
  39                 entry.deps.push(dep)
  40         }
  41 }
  42
  43 function cbi_d_checkvalue(target, ref) {
  44         var t = document.getElementById(target);
  45         var value;
  46
  47         if (!t || !t.value) {
  48                 value = "";
  49         } else {
  50                 value = t.value;
  51
  52                 if (t.type == "checkbox") {
  53                         value = t.checked ? value : "";
  54                 }
  55         }
  56
  57         return (value == ref)
  58 }
  59
  60 function cbi_d_check(deps) {
  61         for (var i=0; i<deps.length; i++) {
  62                 var istat = true
  63                 for (var j in deps[i]) {
  64                         istat = (istat && cbi_d_checkvalue(j, deps[i][j]))
  65                 }
  66                 if (istat) {
  67                         return true
  68                 }
  69         }
  70 }
  71
  72 function cbi_d_update() {
  73         var state = false;
  74         for (var i=0; i<cbi_d.length; i++) {
  75                 var entry = cbi_d[i];
  76                 var next  = document.getElementById(entry.next)
  77                 var node  = document.getElementById(entry.id)
  78                 var parent = document.getElementById(entry.parent)
  79
  80                 if (node && node.parentNode && !cbi_d_check(entry.deps)) {
  81                         node.parentNode.removeChild(node);
  82                         state = (state || !node.parentNode)
  83                 } else if ((!node || !node.parentNode) && cbi_d_check(entry.deps)) {
  84                         if (!next) {
  85                                 parent.appendChild(entry.node);
  86                         } else {
  87                                 next.parentNode.insertBefore(entry.node, next);
  88                         }
  89                         state = (state || (node && node.parentNode))
  90                 }
  91         }
  92         if (state) {
  93                 cbi_d_update();
  94         }
  95 }
  96
  97 function cbi_bind(obj, type, callback, mode) {
  98         if (typeof mode == "undefined") {
  99                 mode = false;
 100         }
 101         if (!obj.addEventListener) {
 102                 ieCallback = function(){
 103                         var e = window.event;
 104                         if (!e.target && e.srcElement) {
 105                                 e.target = e.srcElement;
 106                         };
 107                         e.target['_eCB' + type + callback] = callback;
 108                         e.target['_eCB' + type + callback](e);
 109                         e.target['_eCB' + type + callback] = null;
 110                 };
 111                 obj.attachEvent('on' + type, ieCallback);
 112         } else {
 113                 obj.addEventListener(type, callback, mode);
 114         }
 115         return obj;
 116 }
 117
 118 function cbi_combobox(id, values, def, man) {
 119         var selid = "cbi.combobox." + id;
 120         if (document.getElementById(selid)) {
 121                 return
 122         }
 123
 124         var obj = document.getElementById(id)
 125         var sel = document.createElement("select");
 126         sel.id = selid;
 127         sel.className = 'cbi-input-select';
 128         if (obj.nextSibling) {
 129                 obj.parentNode.insertBefore(sel, obj.nextSibling);
 130         } else {
 131                 obj.parentNode.appendChild(sel);
 132         }
 133
 134         if (!values[obj.value]) {
 135                 if (obj.value == "") {
 136                         var optdef = document.createElement("option");
 137                         optdef.value = "";
 138                         optdef.appendChild(document.createTextNode(def));
 139                         sel.appendChild(optdef);
 140                 } else {
 141                         var opt = document.createElement("option");
 142                         opt.value = obj.value;
 143                         opt.selected = "selected";
 144                         opt.appendChild(document.createTextNode(obj.value));
 145                         sel.appendChild(opt);
 146                 }
 147         }
 148
 149         for (var i in values) {
 150                 var opt = document.createElement("option");
 151                 opt.value = i;
 152
 153                 if (obj.value == i) {
 154                         opt.selected = "selected";
 155                 }
 156
 157                 opt.appendChild(document.createTextNode(values[i]));
 158                 sel.appendChild(opt);
 159         }
 160
 161         var optman = document.createElement("option");
 162         optman.value = "";
 163         optman.appendChild(document.createTextNode(man));
 164         sel.appendChild(optman);
 165
 166         obj.style.display = "none";
 167
 168         cbi_bind(sel, "change", function() {
 169                 if (sel.selectedIndex == sel.options.length - 1) {
 170                         obj.style.display = "inline";
 171                         sel.parentNode.removeChild(sel);
 172                         obj.focus();
 173                 } else {
 174                         obj.value = sel.options[sel.selectedIndex].value;
 175                 }
 176
 177                 try {
 178                         cbi_d_update();
 179                 } catch (e) {
 180                         //Do nothing
 181                 }
 182         })
 183 }
 184
 185 function cbi_combobox_init(id, values, def, man) {
 186         var obj = document.getElementById(id);
 187         cbi_bind(obj, "blur", function() {
 188                 cbi_combobox(id, values, def, man)
 189         });
 190         cbi_combobox(id, values, def, man);
 191 }
 192
 193 function cbi_filebrowser(id, url, defpath) {
 194         var field   = document.getElementById(id);
 195         var browser = window.open(
 196                 url + ( field.value || defpath || '' ) + '?field=' + id,
 197                 "luci_filebrowser", "width=300,height=400,left=100,top=200,scrollbars=yes"
 198         );
 199
 200         browser.focus();
 201 }
 202
 203 //Hijacks the CBI form to send via XHR (requires Prototype)
 204 function cbi_hijack_forms(layer, win, fail, load) {
 205         var forms = layer.getElementsByTagName('form');
 206         for (var i=0; i<forms.length; i++) {
 207                 $(forms[i]).observe('submit', function(event) {
 208                         // Prevent the form from also submitting the regular way
 209                         event.stop();
 210
 211                         // Submit via XHR
 212                         event.element().request({
 213                                 onSuccess: win,
 214                                 onFailure: fail
 215                         });
 216
 217                         if (load) {
 218                                 load();
 219                         }
 220                 });
 221         }
 222 }
 223
 224
 225 function cbi_t_add(section, tab) {
 226         var t = document.getElementById('tab.' + section + '.' + tab);
 227         var c = document.getElementById('container.' + section + '.' + tab);
 228
 229         if( t && c ) {
 230                 cbi_t[section] = (cbi_t[section] || [ ]);
 231                 cbi_t[section][tab] = { 'tab': t, 'container': c };
 232         }
 233 }
 234
 235 function cbi_t_switch(section, tab) {
 236         if( cbi_t[section] && cbi_t[section][tab] ) {
 237                 var o = cbi_t[section][tab];
 238                 for( var tid in cbi_t[section] ) {
 239                         var o2 = cbi_t[section][tid];
 240                         if( o.tab.id != o2.tab.id ) {
 241                                 o2.tab.className = o2.tab.className.replace(/(^| )cbi-tab( |$)/, " cbi-tab-disabled ");
 242                                 o2.container.style.display = 'none';
 243                         }
 244                         else {
 245                                 o2.tab.className = o2.tab.className.replace(/(^| )cbi-tab-disabled( |$)/, " cbi-tab ");
 246                                 o2.container.style.display = 'block';
 247                         }
 248                 }
 249         }
 250         return false
 251 }