72 lines
1.1 KiB
JavaScript
72 lines
1.1 KiB
JavaScript
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var Object = require ('./object');
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var Param = require ('./param');
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var Value = require ('./value');
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/**
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* Simply a linkable value holder.
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**/
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module.exports = new Class
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({
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Extends: Object
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,Tag: 'vn-param'
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,Properties:
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{
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value:
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{
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type: String
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,set: function (x)
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{
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if (Value.compare (x, this._value))
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return;
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if (x instanceof Date)
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x = x.clone ();
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this._value = x;
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if (this._master && !this.masterLock)
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{
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this.masterLock = true;
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this._master.value = x;
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this.masterLock = false;
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}
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this.signalEmit ('changed', this._value);
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}
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,get: function ()
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{
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return this._value;
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}
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},
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master:
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{
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type: Param
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,set: function (x)
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{
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this.link ({_master: x}, {'changed': this._onMasterChange});
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this._onMasterChange ();
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}
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,get: function ()
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{
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return this._master;
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}
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}
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}
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,_value: undefined
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,_master: null
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,masterLock: false
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,_onMasterChange: function ()
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{
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if (this.masterLock)
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return;
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this.masterLock = true;
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this.value = this._master.value;
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this.masterLock = false;
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}
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});
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