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

   1 var cbi_d = [];
   2
   3 function cbi_d_add(field, dep) {
   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                                 "id": field,
  16                                 "node": obj,
  17                                 "parent": obj.parentNode,
  18                                 "next": obj.nextSibling,
  19                                 "deps": []
  20                         };
  21                         cbi_d.unshift(entry);
  22                 }
  23                 entry.deps.push(dep)
  24         }
  25 }
  26
  27 function cbi_d_value(target) {
  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
  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_value(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                 if (entry.node.parentNode && !cbi_d_check(entry.deps)) {
  61                         entry.parent.removeChild(entry.node);
  62                         state = (state || !entry.node.parentNode)
  63                 } else if (!entry.node.parentNode && cbi_d_check(entry.deps)) {
  64                         if (!entry.next) {
  65                                 entry.parent.appendChild(entry.node);
  66                         } else {
  67                                 entry.parent.insertBefore(entry.node, entry.next);
  68                         }
  69                         state = (state || entry.node.parentNode)
  70                 }
  71         }
  72         if (state) {
  73                 cbi_d_update();
  74         }
  75 }
  76
  77 function cbi_bind(obj, type, callback, mode) {
  78         if (typeof mode == "undefined") {
  79                 mode = false;
  80         }
  81         if (!obj.addEventListener) {
  82                 ieCallback = function(){
  83                         var e = window.event;
  84                         if (!e.target && e.srcElement) {
  85                                 e.target = e.srcElement;
  86                         };
  87                         e.target['_eCB' + type + callback] = callback;
  88                         e.target['_eCB' + type + callback](e);
  89                         e.target['_eCB' + type + callback] = null;
  90                 };
  91                 obj.attachEvent('on' + type, ieCallback);
  92         } else {
  93                 obj.addEventListener(type, callback, mode);
  94         }
  95         return obj;
  96 }
  97
  98 function cbi_combobox(id, values, def, man) {
  99         var obj = document.getElementById(id)
 100         var sel = document.createElement("select");
 101         obj.parentNode.appendChild(sel);
 102
 103         if (!values[obj.value]) {
 104                 if (obj.value == "") {
 105                         var optdef = document.createElement("option");
 106                         optdef.value = "";
 107                         optdef.appendChild(document.createTextNode(def));
 108                         sel.appendChild(optdef);
 109                 } else {
 110                         var opt = document.createElement("option");
 111                         opt.value = obj.value;
 112                         opt.selected = "selected";
 113                         opt.appendChild(document.createTextNode(obj.value));
 114                         sel.appendChild(opt);
 115                 }
 116         }
 117
 118         for (var i in values) {
 119                 var opt = document.createElement("option");
 120                 opt.value = i;
 121
 122                 if (obj.value == i) {
 123                         opt.selected = "selected";
 124                 }
 125
 126                 opt.appendChild(document.createTextNode(values[i]));
 127                 sel.appendChild(opt);
 128         }
 129
 130         var optman = document.createElement("option");
 131         optman.value = "";
 132         optman.appendChild(document.createTextNode(man));
 133         sel.appendChild(optman);
 134
 135         obj.style.display = "none";
 136
 137         cbi_bind(sel, "change", function() {
 138                 if (sel.selectedIndex == sel.options.length - 1) {
 139                         obj.style.display = "inline";
 140                         sel.parentNode.removeChild(sel);
 141                         obj.focus();
 142                 } else {
 143                         obj.value = sel.options[sel.selectedIndex].value;
 144                 }
 145         })
 146 }
 147
 148 function cbi_combobox_init(id, values, def, man) {
 149         var obj = document.getElementById(id);
 150         cbi_bind(obj, "blur", function() {
 151                 cbi_combobox(id, values, def, man)
 152         });
 153         cbi_combobox(id, values, def, man);
 154 }