angular2
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Angular 2 - a web framework for modern web apps
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JavaScript
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var __param = (this && this.__param) || function (paramIndex, decorator) {
return function (target, key) { decorator(target, key, paramIndex); }
};
import { Directive, Renderer, forwardRef, Provider, ElementRef, Input, Host, Optional } from 'angular2/core';
import { NG_VALUE_ACCESSOR } from './control_value_accessor';
import { CONST_EXPR, StringWrapper, isPrimitive, isPresent, isBlank, looseIdentical } from 'angular2/src/facade/lang';
import { MapWrapper } from 'angular2/src/facade/collection';
const SELECT_VALUE_ACCESSOR = CONST_EXPR(new Provider(NG_VALUE_ACCESSOR, { useExisting: forwardRef(() => SelectControlValueAccessor), multi: true }));
function _buildValueString(id, value) {
if (isBlank(id))
return `${value}`;
if (!isPrimitive(value))
value = "Object";
return StringWrapper.slice(`${id}: ${value}`, 0, 50);
}
function _extractId(valueString) {
return valueString.split(":")[0];
}
/**
* The accessor for writing a value and listening to changes on a select element.
*
* Note: We have to listen to the 'change' event because 'input' events aren't fired
* for selects in Firefox and IE:
* https://bugzilla.mozilla.org/show_bug.cgi?id=1024350
* https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/4660045/
*
*/
export let SelectControlValueAccessor = class SelectControlValueAccessor {
constructor(_renderer, _elementRef) {
this._renderer = _renderer;
this._elementRef = _elementRef;
/** @internal */
this._optionMap = new Map();
/** @internal */
this._idCounter = 0;
this.onChange = (_) => { };
this.onTouched = () => { };
}
writeValue(value) {
this.value = value;
var valueString = _buildValueString(this._getOptionId(value), value);
this._renderer.setElementProperty(this._elementRef.nativeElement, 'value', valueString);
}
registerOnChange(fn) {
this.onChange = (valueString) => { fn(this._getOptionValue(valueString)); };
}
registerOnTouched(fn) { this.onTouched = fn; }
/** @internal */
_registerOption() { return (this._idCounter++).toString(); }
/** @internal */
_getOptionId(value) {
for (let id of MapWrapper.keys(this._optionMap)) {
if (looseIdentical(this._optionMap.get(id), value))
return id;
}
return null;
}
/** @internal */
_getOptionValue(valueString) {
let value = this._optionMap.get(_extractId(valueString));
return isPresent(value) ? value : valueString;
}
};
SelectControlValueAccessor = __decorate([
Directive({
selector: 'select[ngControl],select[ngFormControl],select[ngModel]',
host: { '(change)': 'onChange($event.target.value)', '(blur)': 'onTouched()' },
providers: [SELECT_VALUE_ACCESSOR]
}),
__metadata('design:paramtypes', [Renderer, ElementRef])
], SelectControlValueAccessor);
/**
* Marks `<option>` as dynamic, so Angular can be notified when options change.
*
* ### Example
*
* ```
* <select ngControl="city">
* <option *ngFor="let c of cities" [value]="c"></option>
* </select>
* ```
*/
export let NgSelectOption = class NgSelectOption {
constructor(_element, _renderer, _select) {
this._element = _element;
this._renderer = _renderer;
this._select = _select;
if (isPresent(this._select))
this.id = this._select._registerOption();
}
set ngValue(value) {
if (this._select == null)
return;
this._select._optionMap.set(this.id, value);
this._setElementValue(_buildValueString(this.id, value));
this._select.writeValue(this._select.value);
}
set value(value) {
this._setElementValue(value);
if (isPresent(this._select))
this._select.writeValue(this._select.value);
}
/** @internal */
_setElementValue(value) {
this._renderer.setElementProperty(this._element.nativeElement, 'value', value);
}
ngOnDestroy() {
if (isPresent(this._select)) {
this._select._optionMap.delete(this.id);
this._select.writeValue(this._select.value);
}
}
};
__decorate([
Input('ngValue'),
__metadata('design:type', Object),
__metadata('design:paramtypes', [Object])
], NgSelectOption.prototype, "ngValue", null);
__decorate([
Input('value'),
__metadata('design:type', Object),
__metadata('design:paramtypes', [Object])
], NgSelectOption.prototype, "value", null);
NgSelectOption = __decorate([
Directive({ selector: 'option' }),
__param(2, Optional()),
__param(2, Host()),
__metadata('design:paramtypes', [ElementRef, Renderer, SelectControlValueAccessor])
], NgSelectOption);