#Angular6 Bootstrap Modal Service

It is a library to make usage of bootstrap modal plugin easier in Angular6+. Create clear and reusable modal components. It makes managing dialogs painless and clearer.

Library does not use bootstrap js, only css.

Compatible with bootstrap 3 and bootstrap 4.

##Installation

npm install ng6-bootstrap-modal

See Live Demo

###Without bootstrap? Yes, you can create your own CSS. Just write css for .modal and .modal-dialog classes.

.modal {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1050;
    overflow: hidden;
    -webkit-overflow-scrolling: touch;
    outline: 0;
}

.fade {
    opacity: 0;
    -webkit-transition: opacity .15s linear;
    -o-transition: opacity .15s linear;
    transition: opacity .15s linear;
}

.fade.in {
    opacity: 1;
}

.modal-dialog {
    position: relative;
    width: auto;
    margin: 10px;
}

.modal.in .modal-dialog {
    -webkit-transform: translate(0,0);
    -ms-transform: translate(0,0);
    -o-transform: translate(0,0);
    transform: translate(0,0);
}

.modal.fade .modal-dialog {
    -webkit-transition: -webkit-transform .3s ease-out;
    -o-transition: -o-transform .3s ease-out;
    transition: transform .3s ease-out;
    -webkit-transform: translate(0,-25%);
    -ms-transform: translate(0,-25%);
    -o-transform: translate(0,-25%);
    transform: translate(0,-25%);
}

@media (min-width: 768px) {
    .modal-dialog {
        width: 600px;
        margin: 30px auto;
    }
}

##Quickstart

Step 1. add bootstrap CSS

You can add bootstrap CSS from CDN

<!-- Bootstrap 3.x -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

or

<!-- Bootstrap 4.x -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">

Step 1. import 'BootstrapModalModule' module

app.module.ts:

import { NgModule} from '@angular/core';
import { CommonModule } from "@angular/common";
import { BrowserModule } from '@angular/platform-browser';
import { BootstrapModalModule } from 'ng6-bootstrap-modal';
import { AppComponent } from './app.component';
@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    CommonModule,
    BrowserModule,
    BootstrapModalModule
  ],
  bootstrap: [AppComponent]
})
export class AppModule {}

By default, dialog placeholder will be added to AppComponent. But you can select custom placeholder (i.e. document body):

imports: [
    ...
    BootstrapModalModule.forRoot({container:document.body})
  ]

###Step 2. Create your modal dialog component Your modal dialog is expected to be extended from DialogComponent. DialogService is generic class with two arguments:

1. input dialog data type (data to initialize component);
2. dialog result type;

Therefore DialogService is supposed to be a constructor argument of DialogComponent.

confirm.component.ts:

import { Component } from '@angular/core';
import { DialogComponent, DialogService } from "ng6-bootstrap-modal";
export interface ConfirmModel {
  title:string;
  message:string;
}
@Component({  
    selector: 'confirm',
    template: `<div class="modal-dialog">
                <div class="modal-content">
                   <div class="modal-header">
                     <button type="button" class="close" (click)="close()" >&times;</button>
                     <h4 class="modal-title">{{title || 'Confirm'}}</h4>
                   </div>
                   <div class="modal-body">
                     <p>{{message || 'Are you sure?'}}</p>
                   </div>
                   <div class="modal-footer">
                     <button type="button" class="btn btn-primary" (click)="confirm()">OK</button>
                     <button type="button" class="btn btn-default" (click)="close()" >Cancel</button>
                   </div>
                 </div>
              </div>`
})
export class ConfirmComponent extends DialogComponent<ConfirmModel, boolean> implements ConfirmModel {
  title: string;
  message: string;
  constructor(dialogService: DialogService) {
    super(dialogService);
  }
  confirm() {
    // we set dialog result as true on click on confirm button, 
    // then we can get dialog result from caller code 
    this.result = true;
    this.close();
  }
}

###Step 3. Register created component to module Add component to declarations and entryComponents section, because the component will be created dynamically.

app.module.ts:

    import { NgModule} from '@angular/core';
    import { CommonModule } from "@angular/common";
    import { BrowserModule } from '@angular/platform-browser';
    import { BootstrapModalModule } from 'ng6-bootstrap-modal';
    import { ConfirmComponent } from './confirm.component';
    import { AppComponent } from './app.component';
    @NgModule({
      declarations: [
        AppComponent,
        ConfirmComponent
      ],
      imports: [
        CommonModule,
        BrowserModule,
        BootstrapModalModule
      ],
      //Don't forget to add the component to entryComponents section
      entryComponents: [
        ConfirmComponent
      ],
      bootstrap: [AppComponent]
    })
    export class AppModule {}

###Step 4. Usage

app.component.ts

    import { Component } from '@angular/core';
    import { ConfirmComponent } from './confirm.component';
    import { DialogService } from "ng6-bootstrap-modal";
    
    @Component({
      selector: 'app',
      template: `
        <div class="container">
          <button class="btn btn-default" (click)=showConfirm()>Show confirm</button>
        </div>
      `
    })
    export class AppComponent {
        constructor(private dialogService:DialogService) {}
        showConfirm() {
            let disposable = this.dialogService.addDialog(ConfirmComponent, {
                title:'Confirm title', 
                message:'Confirm message'})
                .subscribe((isConfirmed)=>{
                    //We get dialog result
                    if(isConfirmed) {
                        alert('accepted');
                    }
                    else {
                        alert('declined');
                    }
                });
            //We can close dialog calling disposable.unsubscribe();
            //If dialog was not closed manually close it by timeout
            setTimeout(()=>{
                disposable.unsubscribe();
            },10000);
        }
    }

##Documentation

###DialogComponent Super class of all modal components. ####Class Overview

/**
* Dialog abstract class
* @template T1 - input dialog data
* @template T2 - dialog result
*/
abstract class DialogComponent<T1, T2> implements T1 {
    /**
    * Constructor
    * @param {DialogService} dialogService - instance of DialogService
    */
    constructor(dialogService: DialogService)
    
    /**
    * Dialog result 
    * @type {T2}
    */
    protected result:T2
    
    /**
    * Closes dialog
    */
    public close:Function
}

###DialogOptions

interface DialogOptions {
  /**
  * Dialog index (optional) to set order of modals
  * @type {number}
  */
  index?: number;
 
  /**
  * Timestamp to close dialog automatically after timeout (in msec)
  * @type {number}
  */
  autoCloseTimeout?: number;
  
  /**
  * Flag to close dialog by click on backdrop (outside dialog)
  * @type {boolean}
  */
  closeByClickingOutside?: boolean;
  
  /**
   * Custom backdrop color
   * Default backdrop color you can set via css (.modal {backgroundColor:...})
   * @type {string}
   */
  backdropColor?: string;
}

###DialogService Service to show dialogs

###Class Overview

class DialogService {
    /**
    * Adds dialog
    * @param {Type<DialogComponent<T1, T2>} component - Modal dialog component
    * @param {T1?} data - Initialization data for component (optional) to add to component instance and can be used in component code or template 
    * @param {DialogOptions?} Dialog options
    * @return {Observable<T2>} - returns Observable to get dialog result
    */
    public addDialog<T1, T2>(component:Type<DialogComponent<T1, T2>>, data?:T1, options: DialogOptions): Observable<T2> => {}
}