本文转自:https://www.jianshu.com/p/0c566fc1730d
环境:
Angular 4.0.0
Angular2 Material2 2.0.0-beta.3
node v7.4.0
npm 4.0.5
使用Dialog封装confirmDialog确定框
源代码
来,首先来看效果图~
1.定义通用确定框组件
confirmDialog.component.html
<div class="clearfix"><h1 class="pull-left" md-dialog-title>{{ config.title || '确认操作' }}</h1> <span class="icon-close-mid pull-right md-dialog-title-close" (click)="mdDialogRef.close(false)"></span> </div> <div md-dialog-content>{{ config.content }}</div> <div md-dialog-actions class="confirm-dialog-operate"> <button md-raised-button color="primary" (click)="mdDialogRef.close(true)">{{ config.button || '确定' }}</button> <button md-raised-button (click)="mdDialogRef.close(false)" class="confirm-dialog-cancel">取消</button> </div>
配置项 | 描述 |
---|---|
config.title | 可配置,默认为“ 确定操作 ”。确定框的标题。 |
config.content | 需配置。确定框的提示内容。 |
config.button | 可配置,默认为“ 确定 ”。操作按钮的文字。 |
confirmDialog.component.ts
import { Component, OnInit, Inject } from '@angular/core';
import { MdDialogRef } from '@angular/material'; import {MD_DIALOG_DATA} from '@angular/material'; @Component({ selector: 'confirm-dialog', styleUrls: ['confirmDialog.component.scss'], templateUrl: 'confirmDialog.component.html' }) export class ConfirmDialogComponent implements OnInit { config : {}; constructor(private mdDialogRef : MdDialogRef<ConfirmDialogComponent>, @Inject(MD_DIALOG_DATA) data: any){ this.config = data; } public ngOnInit() { } }
confirmDialog.component.scss
.md-dialog-title-close:hover{cursor: pointer;
}
.confirm-dialog-operate{ margin-bottom: 0; margin-top: 15px; align-items: center; justify-content: center; } .confirm-dialog-cancel{ margin-left: 20px; }
2.在app.module.ts引入组件
import { ConfirmDialogComponent } from './confirmDialog/confirmDialog.component';@NgModule({declarations: [ ··· ConfirmDialogComponent, ··· ], entryComponents: [ ··· ConfirmDialogComponent, ··· ] }) export class AppModule { }
3.把组件注入到服务
为了通用,把组件注入服务,方便在其他地方使用。这样的话,就不用在每次使用的时候重新定义组件。
confirmDialog.service.ts
import { Component, Inject, Injectable } from '@angular/core';
import { DOCUMENT } from '@angular/platform-browser'; import { MdDialog, MdDialogRef, MdDialogConfig } from '@angular/material'; import { ConfirmDialogComponent } from './confirmDialog.component'; import { Observable } from 'rxjs/Observable'; export class confirmDialogService { constructor( @Inject(MdDialog) public _confirmDialog: MdDialog, @Inject(DOCUMENT) doc: any) { // 打开dialog,body添加no-scroll样式 _confirmDialog.afterOpen.subscribe((ref: MdDialogRef<any>) => { if (!doc.body.classList.contains('no-scroll')) { doc.body.classList.add('no-scroll'); } }); // 关闭dialog,body移除no-scroll样式 _confirmDialog.afterAllClosed.subscribe(() => { doc.body.classList.remove('no-scroll'); }); } public confirm(contentOrConfig: any, title?: string): Observable<any> { // 设置dialog的属性,宽度,高度,内容等。 let config = new MdDialogConfig(); config = { width: '300px', height: '200px' }; if (contentOrConfig instanceof Object) { config.data = contentOrConfig; } else if ((typeof contentOrConfig) === 'string') { config.data = { content: contentOrConfig, title: title } } return this._confirmDialog.open(ConfirmDialogComponent, config).afterClosed(); } }
4.使用例子
在需要使用的组件里的provides注册,就可以使用了,例子如下:
confirmDialog-example.component.ts
import { Component, OnInit, ViewEncapsulation, Inject } from '@angular/core';
import { confirmDialogService } from './confirmDialog.service'; @Component({ selector: 'confirmDialog', templateUrl: 'confirmDialog-example.component.html', providers: [confirmDialogService] }) export class DialogExampleComponent implements OnInit { lastCloseResult: any; public constructor(public _confirmDialogService: confirmDialogService) { } public confirm() { this._confirmDialogService.confirm({ content: '确认删除吗?' }).subscribe(res => { // 返回结果 if (res) { this.lastCloseResult = "删除成功"; } else { return; } }); } public ngOnInit() { } }
confirmDialog-example.component.html
<p>Last close result: {{lastCloseResult}}</p><button md-raised-button (click)="confirm()">删除</button>
确定删除后,返回结果: this.lastCloseResult = "删除成功"; 界面即显示删除成功,如上面的效果图示。
就这样完成了封装confirmDialog确定框的组件~
作者:LeeChingYin
链接:https://www.jianshu.com/p/0c566fc1730d
來源:简书
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