I work for system of dialog (Angular Material).
I create dialog-service for controll and container dialog. Dialog-service has methods for open/show different dialoges.
And I create dialog-component for contain data for dialog (it is single component of dialog). It is universal component.
I add StackBlitz
I have problem with closing dialoges after callback.
How I can close dialog after callback? I try using [mat-dialog-close] - but I was not able to somehow parameterize - enable and disable the [mat-dialog-close] of different buttons.
And a have little problem. How I can add dynamicly mat-button to button element?
(I add class 'mat-button', but this don't full imitation mat-button)
<div *ngIf="getButtons().length > 0 || getCloseButton()" mat-dialog-actions>
<ng-container *ngFor="let button of getButtons()">
<button [attr.class]="button.class"
(click)="button.callback(button.callbackItem || dialogForm)">{{button.title}}</button>
</ng-container>
</div>
In your dialog.html you must have something like this:
<button mat-stroked-button (click)="closeDialog()">Close</button>
and in your dialog.ts:
import { Component, OnInit, Inject } from '#angular/core';
import { MAT_DIALOG_DATA, MatDialogRef } from '#angular/material';
#Component({
selector: 'dialog',
templateUrl: './dialog.component.html',
styleUrls: ['./dialog.component.scss']
})
export class DialogComponent implements OnInit {
constructor(public dialogRef: MatDialogRef<DialogComponent>) { }
ngOnInit() {
}
closeDialog() {
this.dialogRef.close();
}
}
Related
I'm trying render filter(s) in a mat-dialog, I came to a point where it is rendered correctly, but functionally not usable and I'm not sure if this is the right way or not.
here is the code
here is how I create and open the dialog:
public lol(colDef: ColDef): void {
console.log(colDef);
this.gridApi?.getFilterInstance(colDef.field, (foo) => {
console.log(foo.getModel());
foo.setModel(foo.getModel());
this.dialog.open(FilterWrapperDialogComponent, {
data: {
filterHtml: foo.getGui()
},
panelClass: 'ag-custom-component-popup'
}).afterClosed().subscribe((applyOrNot) => {
if (applyOrNot) {
this.gridApi.onFilterChanged();
console.log(foo.getModel());
}
});
})
}
the dialog content:
<mat-dialog-content>
<div class="ag-theme-material ag-custom-component-popup" [innerHTML]="data.filterHtml?.innerHTML | safeUrl: 'html' "></div>
</mat-dialog-content>
<mat-dialog-actions>
<button mat-raised-button i18n [mat-dialog-close]="true" color="primary">Apply</button>
</mat-dialog-actions>
it renders correctly, but it looses functionality.
My goal is to set a filter without actually adding to the ag-grid table, just through a dialog and ag-grid API.
The problem was that I was using [innerHTML]="data.filterHtml?.innerHTML | safeUrl: 'html' " which strips any functionality for safety reasons ( XSS ).
The solutions was to give an id to the div and append the html from getGui()
Dialog HTML:
<mat-dialog-content>
<div class="ag-theme-material ag-custom-component-popup" id="second"></div>
</mat-dialog-content>
<mat-dialog-actions>
<button mat-raised-button i18n [mat-dialog-close]="true" color="primary">Apply</button>
</mat-dialog-actions>
Appending HTML to the div; dialog logic:
import { Component, ChangeDetectionStrategy, Inject, AfterViewInit } from '#angular/core';
import { MAT_DIALOG_DATA } from '#angular/material/dialog';
#Component({
selector: 'app-filter-wrapper-dialog',
templateUrl: './filter-wrapper-dialog.component.html',
styleUrls: ['./filter-wrapper-dialog.component.scss'],
changeDetection: ChangeDetectionStrategy.Default
})
export class FilterWrapperDialogComponent implements AfterViewInit {
constructor(
#Inject(MAT_DIALOG_DATA) public data: any
) {}
ngAfterViewInit(): void {
document.querySelector('#second').appendChild((this.data.filterHtml as HTMLElement));
}
}
With these changes I was able to render the filter correctly and functionally.
I come from a Python background, but I started trying to learn Angular and I'm really having trouble. Working between components is confusing to me and I can't figure it out. I made a good example that I think if someone helped me with it would go along way towards understanding Angular.
I just have two components: a "header" component and an app component. In the header component, I ask for the user's name and they click a button, and then it should show "Hello {{name}}" in the next component. I cannot get it to work to say the least and it's really frustrating. The Header part seems to work okay, but it's just not communicating with the other component at all. Neither the button part or the "name" part are working so I am clearly misunderstanding something I need to do when it comes to listening from the parent component.
Here is my Header HTML:
Name: <input type="text" id="userInput" value="Joe">
<button (click)=showName()>Show More</button>
Here is my Header TS:
import { Component, OnInit, Output, EventEmitter } from '#angular/core';
#Component({
selector: 'app-header',
templateUrl: './header.component.html',
styleUrls: ['./header.component.css']
})
export class HeaderComponent implements OnInit {
bodyDiv = false;
inputName = '';
#Output() buttonClicked = new EventEmitter();
constructor() { }
ngOnInit() {
}
showName() {
console.log('showName clicked.');
this.bodyDiv = true;
this.inputName = document.getElementById('userInput').value;
console.log(this.inputName);
console.log(this.bodyDiv);
this.buttonClicked.emit(this.bodyDiv);
this.buttonClicked.emit(this.inputName);
}
}
Here is the main Component's HTML:
<app-header (buttonClicked)='showNextComponent($event)'></app-header>
<p *ngIf="![hiddenDiv]" [inputName]="name">Hello {{ name }} </p>
Here is the main component's TS:
import { Component } from '#angular/core';
#Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
hiddenComponent = true;
title = 'show-button';
showNextComponent() {
console.log('Button clicked.');
this.hiddenComponent = false;
console.log(this.hiddenComponent);
}
}
So who can show me what I'm doing wrong and help figure out Angular a little better? :) Thank you!
replace showName function with below code :
showName() {
console.log('showName clicked.');
this.bodyDiv = true;
this.inputName = document.getElementById('userInput').value;
console.log(this.inputName);
console.log(this.bodyDiv);
this.buttonClicked.emit(this.inputName);
}
replace below code in your main component.
name:string
showNextComponent(value:string) {
this.name = value;
}
replace below code in your html :
<app-header (buttonClicked)='showNextComponent($event)'></app-header>
<p *ngIf="name">Hello {{ name }} </p>
Please let me if you have any question and I would suggest try to use ngmodel or something else instead of directly communicating with the DOM.
Here is a slightly modified and working sample: https://stackblitz.com/edit/angular-jhhctr
The event emitter in the header component emits the name (string) which is the $event in showNextComponent($event). You have to capture this in the main component and assign it to a local variable to be able to use it in the main component's template as {{name}}
[inputName]="name" is incorrect. You can pass values like that to angular components not to actual HTML DOM elements.
There are couple of ways to communicate from one component to another in angular - Using #Input()in your child component will expects an input from parent component and #Output() from your child component will emit an event from the child component
So in your case if you want to pass a value from parent to child you need to use input property or decorator on your child property - I will provide you the code but just go through proper guidance from the link provided this will make you to create better angular applications https://angular.io/guide/component-interaction
First you need to swap your components your header component should be your parent and the child component will be your main component - if you want to work in the same way just move your codes vice versa
Header html
Name: <input type="text" id="userInput" name='userInput' [(ngModel)]='inputName' value="Joe">
<button (click)=showName()>Show More</button>
<div [hidden]='bodyDiv'>
<app-header [bindName]='inputName'></app-header>
</div>
Header Component
import { Component, OnInit, Output, EventEmitter } from '#angular/core';
#Component({
selector: 'app-header',
templateUrl: './header.component.html',
styleUrls: ['./header.component.css']
})
export class HeaderComponent implements OnInit {
bodyDiv = true;
inputName = '';
constructor() { }
ngOnInit() {
}
showName() {
bodyDiv = false;
}
}
Main Component Html
<p>Hello {{ bindName }} </p>
Main component ts
import { Component, Input } from '#angular/core';
#Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
#Input()
bindName: string;
}
In your header component the inputName property will be binded using two way data binding where i used [(ngModel)]='inputName' so whatever you enter in the input text it will be updated in your inputName property
Now we need to do only one thing just to show your child component with any event - so when the button is clicked the div with [hidden] property will be false and it will be displayed and as we pass the inputName to the child Component it will be updated
And finally the child component will be displayed and the input written in the text will be updated in the child component - when the child component html displays the bindName will be updated and there will be result you expected
That's all I think this should work well - Try this and let me know - Thanks Happy coding !!
Don't forget to look into the link above where you can see many types of component interactions
i'm struggling about this problem and can't figure out.
I simply need to show a popup div situated in the page clicking from a menu entry in my navbar.component.
I added a property "show" in my popup which prints the "show" class on my div using the ngClass (with if) directive. I can get this working if the action button is inside my popup component but i cannot print the show class clicking on another component. The property in the Object get updated but the class is not printed. I'm using angular 4 with ng-bootstrap. I tried both with services and with parent/child emit event.
This is is my situation:
app.component.html
<app-nav-bar></app-nav-bar>
<app-login></app-login>
<router-outlet></router-outlet>
<app-footer></app-footer>
navbar.component.html
...
<button class="dropdown-item" (click)="showPopup()">LOGIN</button>
...
navbar.component.ts
import {Component, EventEmitter, Input, OnInit, Output} from '#angular/core';
#Component({
moduleId: module.id,
selector: 'app-nav-bar',
templateUrl: 'navbar.component.html',
styleUrls: ['./navbar.component.css'],
})
export class NavbarComponent implements OnInit {
#Output() show = new EventEmitter<boolean>();
ngOnInit() {
}
showPopup() {
this.show.emit(true);
}
}
login.component.html
<div id="wrapper-login-popup" class="fade-from-top" [(class.show)]="show">
<div id="container-login-popup">
<div class="row">
<div class="col-sm-12 text-center">
<img id="popup-bomb" src="assets/images/bomb.png" alt="bomb"/>
<img id="popup-close" class="close-icon" src="assets/images/close.png" alt="close"
(click)="closePopup()"/>
</div>
</div>
</div>
</div>
login.component.ts
import {Component, Input, OnInit} from '#angular/core';
import {AuthService} from '../services/auth.service';
import {IUser} from './user';
#Component({
selector: 'app-login',
templateUrl: 'login.component.html',
styleUrls: ['login.css']
})
export class LoginComponent implements OnInit {
private username: string;
private password: string;
#Input() show: boolean = false;
constructor(private AuthService: AuthService) {
}
ngOnInit() {
}
login() {
...
}
showPopup() {
console.log(this); //Show is false
this.show = true;
console.log(this); //Show is true but does not trigger the show class
}
closePopup() {
this.show = false;
}
}
The issue here is that your nav-bar and login components are siblings and can't directly communicate with each other. You have show as an output of navbar and as an input of login, but you haven't connected the dots.
You need to update your app.component to connect them.
export class AppComponent implements OnInit {
show = false;
onShow() { this.show = true; }
}
and in the template:
<app-nav-bar (show)="onShow()"></app-nav-bar>
<app-login [(show)]="show"></app-login>
There's a lot of two way binding going on here which works for something simple liek this, but generally it's a bad idea as it leads to unmaintainable code. You should choose one owner of the show variable and force all changes to it through him. In this case the app component is the most logical owner, so I'd change the login component to emit an event that changes the show variable in app component adn remove all 2 way bindings, but in a bigger app, you may even want a separate service that manages hiding/showing pop ups. This eliminates the need for the sending a message up and down your component tree, you can inject the service where it's needed.
As another commenter mentioned, you also should be using ngClass for class manipulation like
[ngClass]="{'show':show}"
a service based solution would look like
import {Subject} from 'rxjs/Subject';
#Injectable()
export class PopUpService {
private showPopUpSource = new Subject();
showPopUp$ = this.showPopUpSource.asObservable();
showPopUp() { this.popUpSource.next(true); }
closePopUp() { this.popUpSource.next(false); }
}
Then you provide in app module or at app component level:
providers:[PopUpService]
make sure you don't re provide this later, as you only want one copy to exist so everyone shares it.
then inject into both components, and have them call the services close or show pop up methods.
then in the login component you bind to the popUp$ observable like
constructor(private popUpSvc:PopUpService){}
show$;
ngOnInit() { this.show$ = this.popUpSvc.showPopUp$; }
showPopUp() { this.popUpSvc.showPopUp(); }
closePopUp() { this.popUpSvc.closePopUp(); }
and in the template subscribe w async pipe like
<div id="wrapper-login-popup" class="fade-from-top" [ngClass]="{'show': (show$ | async) }">
The reason for using the async pipe is garbage collection managemetn is simpler. If you don't use async, you need to garbage collect manually in ngOnDestroy by calling unsubscribe(), otherwise your subscriptions will keep stacking up. There is also a more nuanced benefit in that the async pipe triggers change detection, but this only becomes important if you start using onPush change detection for performance optimization.
I have an Angular2 application and I want to use Semantic UI. However, there are some jQuery configurations like below that I have to run after a component loaded:
$('#app .ui.sidebar')
.sidebar({context:$('#app')})
.sidebar('setting', 'transition', 'overlay')
It is not working by importing the js file in the head of index.html or writing it in a <script> tag inside of a component template. Is there a "typescript way" to do that or how can I use a js file inside of a component?
I found this link about using jQuery in directives, then I created a sidebar directive:
import {Directive, ElementRef, OnDestroy, OnInit, Input} from '#angular/core';
import {HostListener} from "#angular/core/src/metadata/directives";
declare var $: any
#Directive({
selector: '.ui.sidebar'
})
export class SidebarDirective implements OnInit, OnDestroy {
#Input() context: string;
constructor(private el: ElementRef) {
}
public ngOnInit() {
$(this.el.nativeElement)
.sidebar({context: this.context})
.sidebar('setting', 'transition', 'overlay');
}
public ngOnDestroy() {
}
}
Then, I used it in the template:
<div id="app">
<div context="#app" class="ui left vertical menu sidebar"></div>
<div class="pusher"></div>
</div>
I have spent quite some time to get this working although it is rather simple in the end. Hope to save you some time ...
There is no need to create a directive, you can use the jQuery command as you would use with JavaScript (described at https://semantic-ui.com/modules/sidebar.html#/usage). However, "$" has to be declared and the command has to be located in a TypeScript function ("toggle()"):
import {Component} from '#angular/core';
declare var $: any;
#Component({
selector: 'app-root',
templateUrl: './app.component.html'
})
export class AppComponent {
toggle() {
$('.ui.sidebar').sidebar('toggle');
}
}
The corresponding section of the template may look like this:
<div class="ui fixed inverted main menu">
<a (click)="toggle()" class="launch icon item">
<i class="content icon"></i>
<p style="padding-left:1em">Menu</p>
</a>
</div>
Don't forget to add jQuery to the scripts section of .angular-cli.json:
"scripts": [
"../node_modules/jquery/dist/jquery.js",
"../node_modules/semantic-ui-css/semantic.min.js"
],
I'm using Semantic UI 2.2.12 which already depends on jQuery 3.2.1. Angular version is 4.4.4 running on node.js 6.11.2.
import { Component, OnInit } from '#angular/core';
declare var $:any;
#Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit {
title = 'app works!';
ngOnInit(){
$('#app .ui.sidebar')
.sidebar({context:$('#app')})
.sidebar('setting', 'transition', 'overlay') ;
}
}
Is there a way to target a template reference variable in another component?
I would like to trigger the side nav by creating an event that calls the sidenav's open function through the TRV sidenav.
app.component.html
<md-sidenav-layout>
<md-sidenav #sidenav (open)="mybutton.focus()">
Start Sidenav.
<br>
<button md-button #mybutton (click)="sidenav.close()">Close</button>
</md-sidenav>
<top-bar></top-bar>
<main class="main" (openNav)="sidenav.open()">
<router-outlet></router-outlet>
</main>
</md-sidenav-layout>
topbar.component.html
<md-toolbar color="primary">
<button class="app-icon-button" (click)="openSideNav()">
<i class="material-icons app-toolbar-menu">menu</i>
</button>
<span [routerLink]="['']">Home</span>
<span [routerLink]="['test']" class="navlink">Test</span>
<span class="navlink" (click)="signout()">signout</span>
</md-toolbar>
topbar.component.ts
import { Component, OnInit, Output, EventEmitter } from '#angular/core';
#Component({
selector: 'top-bar',
templateUrl: './topbar.component.html',
styleUrls: ['./topbar.component.css']
})
export class TopbarComponent implements OnInit {
constructor() { }
#Output() openNav = new EventEmitter();
openSideNav(){
console.log(this.openNav.emit());
this.openNav.emit();
}
ngOnInit() {
}
}
Is it possible for me to target the template variable in the app component from the topbar directive?
I see a couple options.
One, you can create a service that holds the sidenav instance. You can set the sidenav from the app component.
class SidenavService {
private _sidenav: MdSidenav;
set sidenav(nav: MdSidenav) {
this._sidenav = nav;
}
open() {
if (this._sidenav) this.sidenav.open();
}
close() {
if (this._sidenav) this._sidenav.close();
}
}
And in your app controller
class AppComponent implements AfterViewInit {
#ViewChild(MdSidenav) sidenav: MdSidenav;
constructor(private sidenavService: SidenavService) {}
ngAfterViewInit() {
this.sidenavService.sidenav = this.sidenav;
}
}
Then you can inject the SidenavService into whatever other component where you want to have access to it.
The other options is to simply have the sidenav as an input to the topbar.
<topbar [sidenav]="sidenav"></topbar>
class TopbarComponent {
#Input() sidenav: MdSidenav;
}
I personally don't like the second option, as I don't like exposing the sidenav unnecessarily. I'd rather just use the service and control what others can do with it.