radio/libjs/wController/file/file.js
2018-08-05 00:48:17 +03:00

87 lines
2.2 KiB
JavaScript

"use strict";
var Controller = require("../controller");
var WVocabulary = require("../../wType/vocabulary");
var File = Controller.inherit({
"className": "File",
"constructor": function(addr) {
Controller.fn.constructor.call(this, addr);
this._hasData = false;
this._hasAdditional = false;
this.data = null;
this._additional = null;
this._need = 0;
this.addHandler("get");
this.addHandler("getAdditional");
},
"destructor": function() {
if (this._hasData) {
this.data.destructor();
}
if (this._hasAdditional) {
this._additional.destructor();
}
Controller.fn.destructor.call(this);
},
"dontNeedData": function() {
--this._need;
},
"hasData": function() {
return this._hasData
},
"_getAdditional": function(add) {
var ac = !this._hasAdditional || !this._additional["=="](add);
if (ac) {
if (this._hasAdditional) {
this._additional.destructor();
}
this._additional = add.clone();
}
this._hasAdditional = true;
return ac;
},
"getMimeType": function() {
return this._additional.at("mimeType").toString();
},
"_h_get": function(ev) {
var dt = ev.getData();
var ac = this._getAdditional(dt.at("additional"));
if (ac) {
this.trigger("additionalChange")
}
this._hasData = true;
this.data = dt.at("data").clone();
this.trigger("data");
},
"_h_getAdditional": function(ev) {
var ac = this._getAdditional(ev.getData());
if (ac) {
this.trigger("additionalChange");
}
},
"needData": function() {
if (this._need === 0) {
var vc = new WVocabulary();
this.send(vc, "get");
}
++this._need;
},
"subscribe": function() {
Controller.fn.subscribe.call(this);
if (this._need > 0) {
var vc = new WVocabulary();
this.send(vc, "get");
}
}
});
module.exports = File;