angular 仿微信聊天室 angular-chatroom 实战项目

[xiaoyan2017]

一、项目介绍

运用 angular+angular-cli+angular-router+ngrx/store+rxjs+webpack+node+wcPop 等技术实现开发的仿微信 angular 版聊天室 angular-chatroom 实例项目，实现了下拉刷新、聊天消息右键菜单、发送消息、表情(动图)，图片、视频预览，红包打赏等功能。

二、技术实现

• MVVM 框架：angular8.0 / @angular/cli
• 状态管理：@ngrx/store / rxjs
• 地址路由：@angular/router
• 弹窗组件：wcPop
• 打包工具：webpack 2.0
• 环境配置：node.js + cnpm
• 图片预览：previewImage
• 轮播滑动：swiper

{
  "name": "angular-chatroom",

  "dependencies": {
    "@angular/animations": "~8.0.1",
    "@angular/common": "~8.0.1",
    "@angular/compiler": "~8.0.1",
    "@angular/core": "~8.0.1",
    "@angular/forms": "~8.0.1",
    "@angular/platform-browser": "~8.0.1",
    "@angular/platform-browser-dynamic": "~8.0.1",
    "@angular/router": "~8.0.1",
    "rxjs": "~6.4.0",
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.800.0",
    "@angular/cli": "~8.0.3",
    "@angular/compiler-cli": "~8.0.1",
    "@angular/language-service": "~8.0.1",
    "@ngrx/store": "^8.0.1",
    "@types/jasmine": "~3.3.8",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "~8.9.4",
    "@types/swiper": "^4.4.3",
    "codelyzer": "^5.0.0",
    "jasmine-core": "~3.4.0",
    "jasmine-spec-reporter": "~4.2.1",
    "jquery": "^2.2.3",
    "karma": "~4.1.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.1",
    "karma-jasmine": "~2.0.1",
    "karma-jasmine-html-reporter": "^1.4.0",
    "swiper": "^4.5.0",
  }
}

/*
 *  angular 主模块配置
 */ 

import { BrowserModule } from '@angular/platform-browser'
import { NgModule } from '@angular/core'
import { FormsModule } from '@angular/forms'
import { AppRoutingModule } from './app-routing.module'

// 引入状态管理
import { StoreModule } from '@ngrx/store'
import { reducer } from '../ngrx'

// 载入公共组件（ component ）
import { HeaderComponent } from '../components/header'
import { TabBarComponent } from '../components/tabbar'
import { XtnScroll } from '../components/xtnScroll/Scroll'
import { NotFoundComponent } from '../components/404'
// 载入页面组件（ view ）
import { AppComponent } from './app.component'
import { LoginComponent } from '../views/auth/login'
import { RegisterComponent } from '../views/auth/register'
import { IndexComponent } from '../views/index'
import { ContactComponent } from '../views/contact'
import { UinfoComponent } from '../views/contact/uinfo'
import { UcenterComponent } from '../views/ucenter'
import { GroupChatComponent } from '../views/chat/group-chat'
import { GroupInfoComponent } from '../views/chat/group-info'
import { SingleChatComponent } from '../views/chat/single-chat'

@NgModule({
  declarations: [
    // 公共组件
    HeaderComponent,
    TabBarComponent,
    XtnScroll,
    NotFoundComponent,

    // 页面组件
    AppComponent,
    LoginComponent,
    RegisterComponent,
    IndexComponent,
    ContactComponent,
    UinfoComponent,
    UcenterComponent,
    GroupChatComponent,
    GroupInfoComponent,
    SingleChatComponent,
  ],
  imports: [
    BrowserModule,
    AppRoutingModule,
    FormsModule,

    StoreModule.forRoot(reducer)
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

/*
 *  angular 路由守卫（验证 token ）
 */

import { Router, CanActivate } from '@angular/router'

declare var wcPop: any;

export class Auth implements CanActivate{
    constructor(private router: Router){}

    canActivate(){
        let that = this
        // 验证 token
        const token: boolean = window.sessionStorage.getItem('token') ? true : false

        if(!token){
            // 未登录授权
            /*
            wcPop({
                content: '还未登录授权！', anim: 'shake', style: 'background:#e03b30;color:#fff;', time: 2,
                end: function () {
                    that.router.navigate(['/login']);
                }
            });
            */
            that.router.navigate(['/login']);
        }
        return token
    }
}

function surrounds() {
    setTimeout(function () { //chrome
        var sel = window.getSelection();
        var anchorNode = sel.anchorNode;
        if (!anchorNode) return;
        if (sel.anchorNode === $(".J__wcEditor")[0] ||
            (sel.anchorNode.nodeType === 3 && sel.anchorNode.parentNode === $(".J__wcEditor")[0])) {

            var range = sel.getRangeAt(0);
            var p = document.createElement("p");
            range.surroundContents(p);
            range.selectNodeContents(p);
            range.insertNode(document.createElement("br")); //chrome
            sel.collapse(p, 0);

            (function clearBr() {
                var elems = [].slice.call($(".J__wcEditor")[0].children);
                for (var i = 0, len = elems.length; i < len; i++) {
                    var el = elems[i];
                    if (el.tagName.toLowerCase() == "br") {
                        $(".J__wcEditor")[0].removeChild(el);
                    }
                }
                elems.length = 0;
            })();
        }
    }, 10);
}

// 定义最后光标位置
var _lastRange = null, _sel = window.getSelection && window.getSelection();
var _rng = {
    getRange: function () {
        if (_sel && _sel.rangeCount > 0) {
            return _sel.getRangeAt(0);
        }
    },
    addRange: function () {
        if (_lastRange) {
            _sel.removeAllRanges();
            _sel.addRange(_lastRange);
        }
    }
}

// 消息处理
function isEmpty() {
    // var html = $editor.html();
    var html = $(".J__wcEditor").html();
    html = html.replace(/<br[\s\/]{0,2}>/ig, "\r\n");
    html = html.replace(/<[^img].*?>/ig, "");
    html = html.replace(/&nbsp;/ig, "");
    return html.replace(/\r\n|\n|\r/, "").replace(/(?:^[ \t\n\r]+)|(?:[ \t\n\r]+$)/g, "") == "";
}

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