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things-editor-number-input.html
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<!--
@license
Copyright © HatioLab Inc. All rights reserved.
-->
<link rel="import" href="../polymer/polymer.html">
<!--
Number 값이 undefined 또는 NaN인 경우에 Exception을 방지하기 위한 input의 확장 엘리먼트이다.
Example:
<input is="things-editor-number-input" number="{{number}}">
@demo demo/index-editor-number-input.html
@hero hero.svg
-->
<dom-module id="things-editor-number-input">
<script>
(function () {
'use strict';
Polymer({
is: 'things-editor-number-input',
extends: 'input',
properties: {
number: {
type: Number,
notify: true,
reflectToAttribute: true,
observer: "_onChangeNumber"
}
},
listeners: {
'change': "_onChangeValue"
},
created() {
this.setAttribute('type', 'number')
},
_onChangeNumber(number) {
if (this._onSelf)
return;
this._onSelf = true;
/* 외부에서 바인딩된 변수의 값을 바꾼 경우 */
if (isNaN(Number(number))) {
this.value = null;
} else {
this.value = Number(number);
}
this._onSelf = false;
},
_onChangeValue(e) {
if (this._onSelf)
return;
this._onSelf = true;
/* 에디터에서 값을 바꾼 경우 */
if (isNaN(Number(this.value))) {
this.number = undefined;
} else {
this.number = Number(this.value);
}
this._onSelf = false;
}
});
})();
</script>
</dom-module>