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

   1 var cbi_d = [];
   2
   3 function cbi_d_add(field, dep, next) {
   4         var obj = document.getElementById(field);
   5         if (obj) {
   6                 var entry
   7                 for (var i=0; i<cbi_d.length; i++) {
   8                         if (cbi_d[i].id == field) {
   9                                 entry = cbi_d[i];
  10                                 break;
  11                         }
  12                 }
  13                 if (!entry) {
  14                         entry = {
  15                                 "node": obj,
  16                                 "id": field,
  17                                 "parent": obj.parentNode.id,
  18                                 "next": next,
  19                                 "deps": []
  20                         };
  21                         cbi_d.unshift(entry);
  22                 }
  23                 entry.deps.push(dep)
  24         }
  25 }
  26
  27 function cbi_d_checkvalue(target, ref) {
  28         var t = document.getElementById(target);
  29         var value;
  30
  31         if (!t || !t.value) {
  32                 value = "";
  33         } else {
  34                 value = t.value;
  35
  36                 if (t.type == "checkbox") {
  37                         value = t.checked ? value : "";
  38                 }
  39         }
  40
  41         return (value == ref)
  42 }
  43
  44 function cbi_d_check(deps) {
  45         for (var i=0; i<deps.length; i++) {
  46                 var istat = true
  47                 for (var j in deps[i]) {
  48                         istat = (istat && cbi_d_checkvalue(j, deps[i][j]))
  49                 }
  50                 if (istat) {
  51                         return true
  52                 }
  53         }
  54 }
  55
  56 function cbi_d_update() {
  57         var state = false;
  58         for (var i=0; i<cbi_d.length; i++) {
  59                 var entry = cbi_d[i];
  60                 var next  = document.getElementById(entry.next)
  61                 var node  = document.getElementById(entry.id)
  62                 var parent = document.getElementById(entry.parent)
  63
  64                 if (node && node.parentNode && !cbi_d_check(entry.deps)) {
  65                         node.parentNode.removeChild(node);
  66                         state = (state || !node.parentNode)
  67                 } else if ((!node || !node.parentNode) && cbi_d_check(entry.deps)) {
  68                         if (!next) {
  69                                 parent.appendChild(entry.node);
  70                         } else {
  71                                 next.parentNode.insertBefore(entry.node, next);
  72                         }
  73                         state = (state || (node && node.parentNode))
  74                 }
  75         }
  76         if (state) {
  77                 cbi_d_update();
  78         }
  79 }
  80
  81 function cbi_bind(obj, type, callback, mode) {
  82         if (typeof mode == "undefined") {
  83                 mode = false;
  84         }
  85         if (!obj.addEventListener) {
  86                 ieCallback = function(){
  87                         var e = window.event;
  88                         if (!e.target && e.srcElement) {
  89                                 e.target = e.srcElement;
  90                         };
  91                         e.target['_eCB' + type + callback] = callback;
  92                         e.target['_eCB' + type + callback](e);
  93                         e.target['_eCB' + type + callback] = null;
  94                 };
  95                 obj.attachEvent('on' + type, ieCallback);
  96         } else {
  97                 obj.addEventListener(type, callback, mode);
  98         }
  99         return obj;
 100 }
 101
 102 function cbi_combobox(id, values, def, man) {
 103         var selid = "cbi.combobox." + id
 104         if (document.getElementById(selid)) {
 105                 return
 106         }
 107
 108         var obj = document.getElementById(id)
 109         var sel = document.createElement("select");
 110         sel.id = selid
 111         if (obj.nextSibling) {
 112                 obj.parentNode.insertBefore(sel, obj.nextSibling);
 113         } else {
 114                 obj.parentNode.appendChild(sel);
 115         }
 116
 117         if (!values[obj.value]) {
 118                 if (obj.value == "") {
 119                         var optdef = document.createElement("option");
 120                         optdef.value = "";
 121                         optdef.appendChild(document.createTextNode(def));
 122                         sel.appendChild(optdef);
 123                 } else {
 124                         var opt = document.createElement("option");
 125                         opt.value = obj.value;
 126                         opt.selected = "selected";
 127                         opt.appendChild(document.createTextNode(obj.value));
 128                         sel.appendChild(opt);
 129                 }
 130         }
 131
 132         for (var i in values) {
 133                 var opt = document.createElement("option");
 134                 opt.value = i;
 135
 136                 if (obj.value == i) {
 137                         opt.selected = "selected";
 138                 }
 139
 140                 opt.appendChild(document.createTextNode(values[i]));
 141                 sel.appendChild(opt);
 142         }
 143
 144         var optman = document.createElement("option");
 145         optman.value = "";
 146         optman.appendChild(document.createTextNode(man));
 147         sel.appendChild(optman);
 148
 149         obj.style.display = "none";
 150
 151         cbi_bind(sel, "change", function() {
 152                 if (sel.selectedIndex == sel.options.length - 1) {
 153                         obj.style.display = "inline";
 154                         sel.parentNode.removeChild(sel);
 155                         obj.focus();
 156                 } else {
 157                         obj.value = sel.options[sel.selectedIndex].value;
 158                 }
 159         })
 160 }
 161
 162 function cbi_combobox_init(id, values, def, man) {
 163         var obj = document.getElementById(id);
 164         cbi_bind(obj, "blur", function() {
 165                 cbi_combobox(id, values, def, man)
 166         });
 167         cbi_combobox(id, values, def, man);
 168 }