ngparam-input.component.ts 3.46 KiB
// cf. https://blog.thoughtram.io/angular/2016/07/27/custom-form-controls-in-angular-2.html
import { Component, Input, forwardRef, OnInit, DoCheck, ChangeDetectorRef } from "@angular/core";
import { ControlValueAccessor, NG_VALUE_ACCESSOR, NG_VALIDATORS, FormControl } from "@angular/forms";
import { NumericalString, Message } from "jalhyd";
import { InternationalisationService } from "../../services/internationalisation/internationalisation.service";
import { NgParameter } from "../../formulaire/ngparam";
import { GenericInputComponent } from "../generic-input/generic-input.component";
import { Observer, IObservable } from "../../services/observer";
@Component({
    selector: "ngparam-input",
    templateUrl: "../generic-input/generic-input.component.html"
export class NgParamInputComponent extends GenericInputComponent { // implements Observer {
    /**
     * paramètre géré
    private get _paramDef(): NgParameter {
        return this.model;
    /**
     * valeur intermédiaire nécessitée par le fait que toutes les valeurs numériques ne sont pas légales
     * pour NgParameter (l'affecter peut provoquer une exception) et qui permet de faire fonctionner la validation du modèle
    private _tmp: number;
    constructor(private intlService: InternationalisationService, cdRef: ChangeDetectorRef) {
        super(cdRef);
    /**
     * appelé avant le changement de modèle
    // protected beforeSetModel() {
    //     if (this._paramDef != undefined)
    //         this._paramDef.removeObserver(this);
    // }
    /**
     * appelé après le changement de modèle
    protected afterSetModel() {
        if (this._paramDef != undefined) {
            if (this._paramDef.isDefined)
                this._tmp = this._paramDef.getValue();
            // this._paramDef.addObserver(this);
    protected getModelValue(): any {
        return this._tmp;
    protected setModelValue(v: any) {
        this._tmp = v;
        try {
            this._paramDef.setValue(v);
        catch (e) {
            // géré par validateModelValue()
    protected validateModelValue(v: any): { isValid: boolean, message: string } {
        let msg = undefined;
        let valid = false;
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if (this._paramDef == undefined) msg = "internal error, model undefined"; else try { this._paramDef.checkValue(v); valid = true; } catch (e) { if (e instanceof Message) msg = this.intlService.localizeMessage(e); else msg = "invalid value"; } return { isValid: valid, message: msg }; } protected modelToUI(v: any): string { return String(v); } protected validateUIValue(ui: string): { isValid: boolean, message: string } { let valid: boolean = false; let msg: string = undefined; let v: NumericalString = new NumericalString(ui); if (!v.isNumerical) msg = "Veuillez entrer une valeur numérique"; else valid = true; return { isValid: valid, message: msg }; } protected uiToModel(ui: string) { return +ui; } // public update(sender: IObservable, data: any): void { // if (data["action"] == "value") { // this._tmp = data["value"]; // this.updateAndValidateUI(); // } // } }