پیش نیازها

• مسیر آموزشی «+AngularJS 2.0» 
  
• مسیر آموزشی «سری آموزشی Angular CLI»  
• مسیر آموزشی «مسیریابی در Angular»  
• مسیر آموزشی «کتابخانه Angular Material 6x» 
  

کار را با طراحی و پیاده سازی TabService شروع می‌کنیم. برای این منظور یک سرویس را در فولدر services موجود در کنار CoreModule ایجاد خواهیم کرد؛ به این جهت ابتدا مدل‌های زیر را خواهیم داشت:

import { Type, ValueProvider } from '@angular/core';

export interface OpenNewTabModel {
  label: string;
  componentType: Type<any>;
  iconName: string;
  modulePath?: string;
  data?: ValueProvider[];
}

import { TabItemComponent } from './tab-item-component';

export interface TabItem {
  label: string;
  iconName: string;
  component: TabItemComponent;
}

import { Injector, NgModuleFactory, Type } from '@angular/core';

export interface TabItemComponent {
  componentType: Type<any>;
  moduleFactory?: NgModuleFactory<any>;
  injector: Injector;
}

import { BehaviorSubject, Observable } from 'rxjs';
import {
  Injectable,
  Injector,
  NgModuleFactory,
  NgModuleFactoryLoader
} from '@angular/core';

import { OpenNewTabModel } from '../models/open-new-tab-model';
import { TabItem } from '../models/tab-item';

@Injectable({
  providedIn: 'root'
})
export class TabService {
  private tabItemSubject: BehaviorSubject<TabItem[]> = new BehaviorSubject<
    TabItem[]
  >([]);

  constructor(
    private loader: NgModuleFactoryLoader,
    private injector: Injector
  ) {}

  get tabItems$(): Observable<TabItem[]> {
    return this.tabItemSubject.asObservable();
  }

  open(newTab: OpenNewTabModel) {
    if (newTab.modulePath) {
      this.loader
        .load(newTab.modulePath)
        .then((moduleFactory: NgModuleFactory<any>) => {
          this.openInternal(newTab, moduleFactory);
        });
    } else {
      this.openInternal(newTab);
    }
  }

  private openInternal(newTab: OpenNewTabModel, moduleFactory?: NgModuleFactory<any>) {
    const newTabItem: TabItem = {
      label: newTab.label,
      iconName: newTab.iconName,
      component: {
        componentType: newTab.componentType,
        moduleFactory: moduleFactory,
        injector: newTab.data
          ? Injector.create(newTab.data, this.injector)
          : this.injector
      }
    };

    this.tabItemSubject.getValue().push(newTabItem);
    this.tabItemSubject.next(this.tabItemSubject.getValue());
  }

  close(index: number) {
    this.tabItemSubject.getValue().splice(index, 1);
    this.tabItemSubject.next(this.tabItemSubject.getValue());
  }
}

{ provide: NgModuleFactoryLoader, useClass: SystemJsNgModuleLoader }

import { Component, OnInit } from '@angular/core';

import { TabService } from './../../../services/tab.service';

@Component({
  selector: 'app-tabs',
  templateUrl: './tabs.component.html',
  styleUrls: ['./tabs.component.scss']
})
export class TabsComponent implements OnInit {
  constructor(public service: TabService) {}

  ngOnInit() {}
}

<mat-tab-group>
  <mat-tab
    *ngFor="let tabItem of (service.tabItems$ | async); let index = index"
  >
    <ng-template mat-tab-label>
      <mat-icon
        class="icon"
        aria-label="icon for tab"
      >{{tabItem.iconName}}</mat-icon>
      <span class="full">{{ tabItem.label }}</span>
    
      <mat-icon
        class="close"
        (click)="service.close(index)"
        aria-label="close tab button"
        >close</mat-icon
      >
      <!-- </button> -->
    </ng-template>

    <ng-container *ngIf="tabItem.component.moduleFactory">
      <ng-container
        *ngComponentOutlet="
          tabItem.component.componentType;
          ngModuleFactory: tabItem.component.moduleFactory;
          injector: tabItem.component.injector
        "
      >
      </ng-container>
    </ng-container>
    <ng-container *ngIf="!tabItem.component.moduleFactory">
      <ng-container
        *ngComponentOutlet="
          tabItem.component.componentType;
          injector: tabItem.component.injector
        "
      >
      </ng-container>
    </ng-container>
  </mat-tab>
</mat-tab-group>

در تکه کد بالا، ابتدا با استفاده از وهله تزریق شده TabService در کامپوننت مذکور، به شکل زیر، مشترک تغییرات لیست برگه‌ها شده‌ایم و با استفاده از دایرکتیو ‎*ngFor به ازای تک تک tabItem‌های درخواست شده برای گشوده شدن، به شکل زیر کار وهله سازی پویا از کامپوننت مشخص شده انجام می‌شود:

<ng-container *ngComponentOutlet="tabItem.component.componentType; ngModuleFactory: tabItem.component.moduleFactory; injector: tabItem.component.injector">
</ng-container>

خوب، با استفاده از آنچه تا اینجای مطلب بررسی شد، می‌توان یک سیستم راهبری مبتنی بر Tab را نیز برپا کرد که مطلب جدایی را می‌طلبد. برای تکمیل مکانیزم بارگذاری پویای ماژول‌ها، نیاز است تا مسیر ماژول مورد نظر را در فایل angular.json و بخش lazyModules به شکل زیر معرفی کنید:

"build": {
          "builder": "@angular-devkit/build-angular:browser",
          "options": {
            "outputPath": "dist/MaterialAngularTabLayout",
            "index": "src/index.html",
            "main": "src/main.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "src/tsconfig.app.json",
            "assets": [
              "src/favicon.ico",
              "src/assets"
            ],
            "styles": [
              "./node_modules/@angular/material/prebuilt-themes/indigo-pink.css",
              "src/styles.scss"
            ],
            "lazyModules": [
              "src/app/lazy/lazy.module"
            ],
            "scripts": []
          },

import { Component } from '@angular/core';
import { IdModel } from './core/models/id-model';
import { LazyComponent } from './lazy/lazy.component';
import { OpenNewTabModel } from './core/models/open-new-tab-model';
import { TabService } from './core/services/tab.service';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent {
  title = 'MaterialAngularTabLayout';
  constructor(private tabService: TabService) {}
  loadLazyComponent() {
    this.tabService.open(<OpenNewTabModel>{
      label: 'Loaded Lazy Component',
      iconName: 'thumb_up',
      componentType: LazyComponent,
      modulePath: 'src/app/lazy/lazy.module#LazyModule',
      data: [{ provide: IdModel, useValue: <IdModel>{ id: 1 } }]
    });
  }
}

export class IdModel {
  constructor(public id: number) {}
}

import { Component, OnInit } from '@angular/core';

import { IdModel } from './../core/models/id-model';

@Component({
  selector: 'app-lazy',
  templateUrl: './lazy.component.html',
  styleUrls: ['./lazy.component.scss']
})
export class LazyComponent implements OnInit {
  constructor(private model: IdModel) {}

  ngOnInit() {
    console.log(this.model);
  }
}

import { CommonModule } from '@angular/common';
import { LazyComponent } from './lazy.component';
import { NgModule } from '@angular/core';

@NgModule({
  imports: [CommonModule],
  declarations: [LazyComponent],
  entryComponents: [LazyComponent]
})
export class LazyModule {}

 ng new MaterialAngularClient --routing

 ng g m ContactManager -m app.module --routing

import { ContactManagerModule } from "./contact-manager/contact-manager.module";

@NgModule({
  imports: [
    BrowserModule,
    BrowserAnimationsModule,
    CoreModule,
    SharedModule.forRoot(),
    ContactManagerModule,
    AppRoutingModule
  ],
})
export class AppModule { }

 ng g c contact-manager/ContactManagerApp --no-spec

CREATE src/app/contact-manager/contact-manager-app/contact-manager-app.component.html (38 bytes)
CREATE src/app/contact-manager/contact-manager-app/contact-manager-app.component.ts (319 bytes)
CREATE src/app/contact-manager/contact-manager-app/contact-manager-app.component.css (0 bytes)
UPDATE src/app/contact-manager/contact-manager.module.ts (436 bytes)

ng g c contact-manager/components/toolbar --no-spec
ng g c contact-manager/components/main-content --no-spec
ng g c contact-manager/components/sidenav --no-spec

import { NgModule } from "@angular/core";
import { RouterModule, Routes } from "@angular/router";

const routes: Routes = [
  { path: "contactmanager", loadChildren: "./contact-manager/contact-manager.module#ContactManagerModule" },
  { path: "", redirectTo: "contactmanager", pathMatch: "full" },
  { path: "**", redirectTo: "contactmanager" }
];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }

import { NgModule } from "@angular/core";
import { RouterModule, Routes } from "@angular/router";

import { MainContentComponent } from "./components/main-content/main-content.component";
import { ContactManagerAppComponent } from "./contact-manager-app/contact-manager-app.component";

const routes: Routes = [
  {
    path: "", component: ContactManagerAppComponent,
    children: [
      { path: "", component: MainContentComponent }
    ]
  },
  { path: "**", redirectTo: "" }
];

@NgModule({
  imports: [RouterModule.forChild(routes)],
  exports: [RouterModule]
})
export class ContactManagerRoutingModule { }

 <app-sidenav></app-sidenav>

<app-toolbar></app-toolbar>
<router-outlet></router-outlet>

import { SharedModule } from "../shared/shared.module";

@NgModule({
  imports: [
    CommonModule,
    SharedModule,
    ContactManagerRoutingModule
  ]
})
export class ContactManagerModule { }

<mat-sidenav-container *ngIf="shouldRun">
   <mat-sidenav mode="side" opened>
      Sidenav content
   </mat-sidenav>
   Primary content
</mat-sidenav-container>

@import "~@angular/material/prebuilt-themes/indigo-pink.css";

body {
  margin: 0;
}

<mat-card>
  <h1>Main content</h1>
</mat-card>

<app-toolbar (toggleSidenav)="sidenav.toggle()"></app-toolbar>

<mat-sidenav  [opened]="!isScreenSmall" [mode]="isScreenSmall ? 'over' : 'side'">

import { Component, OnDestroy, OnInit } from "@angular/core";
import { MediaChange, ObservableMedia } from "@angular/flex-layout";
import { Subscription } from "rxjs";

@Component({
  selector: "app-sidenav",
  templateUrl: "./sidenav.component.html",
  styleUrls: ["./sidenav.component.css"]
})
export class SidenavComponent implements OnInit, OnDestroy {

  isScreenSmall = false;
  watcher: Subscription;

  constructor(private media: ObservableMedia) {
    this.watcher = media.subscribe((change: MediaChange) => {
      this.isScreenSmall = change.mqAlias === "xs";
    });
  }

  ngOnInit() {
  }

  ngOnDestroy() {
    this.watcher.unsubscribe();
  }
}

 <app-toolbar (toggleSidenav)="sidenav.toggle()"></app-toolbar>

import { Component, EventEmitter, OnInit, Output } from "@angular/core";

@Component({
  selector: "app-toolbar",
  templateUrl: "./toolbar.component.html",
  styleUrls: ["./toolbar.component.css"]
})
export class ToolbarComponent implements OnInit {

  @Output() toggleSidenav = new EventEmitter<void>();

  constructor() { }

  ngOnInit() {
  }
}

1.  URI-based versioning 
   
2.  Header-based versioning 
   
3.  Media type-based versioning 
   

 public class ItemsController : ApiController   
 {
        [ResponseType(typeof(ItemViewModel))]
        public IHttpActionResult Get(int id)
        {
            var viewModel = new ItemViewModel { Id = id, Name = "PS4", Country = "Japan" };
            return Ok(viewModel);
        }
    }
 public class ItemsV2Controller : ApiController
    {
        [ResponseType(typeof(ItemV2ViewModel))]
        public IHttpActionResult Get(int id)
        {
            var viewModel = new ItemV2ViewModel { Id = id, Name = "Xbox One", Country = "USA", Price = 529.99 };
            return Ok(viewModel);
        }
    }

config.Routes.MapHttpRoute("ItemsV2", "api/v2/items/{id}", new
{
    controller = "ItemsV2",
    id = RouteParameter.Optional
});
config.Routes.MapHttpRoute("Items", "api/items/{id}", new
{
    controller = "Items",
    id = RouteParameter.Optional
});
config.Routes.MapHttpRoute(
    name: "DefaultApi",
    routeTemplate: "api/{controller}/{id}",
    defaults: new { id = RouteParameter.Optional }
);

public class VersionFinder
    {
        private static bool NeedsUriVersioning(HttpRequestMessage request, out string version)
        {
            var routeData = request.GetRouteData();
            if (routeData != null)
            {
                object versionFromRoute;
                if (routeData.Values.TryGetValue(nameof(version), out versionFromRoute))
                {
                    version = versionFromRoute as string;
                    if (!string.IsNullOrWhiteSpace(version))
                    {
                        return true;
                    }
                }
            }
            version = null;
            return false;
        }
        private static int VersionToInt(string versionString)
        {
            int version;
            if (string.IsNullOrEmpty(versionString) || !int.TryParse(versionString, out version))
                return 0;
            return version;
        }
        public static int GetVersionFromRequest(HttpRequestMessage request)
        {
            string version;

            return NeedsUriVersioning(request, out version) ? VersionToInt(version) : 0;
        }
    }

 public class VersionAwareControllerSelector : DefaultHttpControllerSelector
    {
        public VersionAwareControllerSelector(HttpConfiguration configuration) : base(configuration) { }
        public override string GetControllerName(HttpRequestMessage request)
        {
            var controllerName = base.GetControllerName(request);
            var version = VersionFinder.GetVersionFromRequest(request);
                
        return version > 0 ? GetVersionedControllerName(request, controllerName, version) : controllerName;
        }
        private string GetVersionedControllerName(HttpRequestMessage request, string baseControllerName,
        int version)
        {
            var versionControllerName = $"{baseControllerName}v{version}";
            HttpControllerDescriptor descriptor;
            if (GetControllerMapping().TryGetValue(versionControllerName, out descriptor))
            {
                return versionControllerName;
            }

            throw new HttpResponseException(request.CreateErrorResponse(
            HttpStatusCode.NotFound,
                $"No HTTP resource was found that matches the URI {request.RequestUri} and version number {version}"));
        }
    }

config.Services.Replace(typeof(IHttpControllerSelector), new VersionAwareControllerSelector(config));

[RoutePrefix("api/v1/Items")]
    public class ItemsController : ApiController
    {
        [ResponseType(typeof(ItemViewModel))]
        [Route("{id:int}")]
        public IHttpActionResult Get(int id)
        {
            var viewModel = new ItemViewModel { Id = id, Name = "PS4", Country =        "Japan" };
            return Ok(viewModel);
        }
    }


 [RoutePrefix("api/V2/Items")]
    public class ItemsV2Controller : ApiController
    {
        [ResponseType(typeof(ItemV2ViewModel))]
        [Route("{id:int}")]
        public IHttpActionResult Get(int id)
        {
            var viewModel = new ItemV2ViewModel { Id = id, Name = "Xbox One", Country = "USA", Price = 529.99 };
            return Ok(viewModel);
        }
    }

var constraintsResolver = new DefaultInlineConstraintResolver();
            constraintsResolver.ConstraintMap.Add(nameof(VersionConstraint), typeof
            (VersionConstraint));
config.MapHttpAttributeRoutes(constraintsResolver);

  public class NamespaceControllerSelector : IHttpControllerSelector
    {
        private readonly HttpConfiguration _configuration;
        private readonly Lazy<Dictionary<string, HttpControllerDescriptor>> _controllers;
        public NamespaceControllerSelector(HttpConfiguration config)
        {
            _configuration = config;
            _controllers = new Lazy<Dictionary<string,
                HttpControllerDescriptor>>(InitializeControllerDictionary);
        }
        public HttpControllerDescriptor SelectController(HttpRequestMessage request)
        {
            var routeData = request.GetRouteData();
            if (routeData == null)
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
            }

            var controllerName = GetControllerName(routeData);
            if (controllerName == null)
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
            }
            var version = GetVersion(routeData);
            if (version == null)
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
            }
            var controllerKey = string.Format(CultureInfo.InvariantCulture, "{0}.{1}",
                version, controllerName);
            HttpControllerDescriptor controllerDescriptor;
            if (_controllers.Value.TryGetValue(controllerKey, out controllerDescriptor))
            {
                return controllerDescriptor;
            }
            throw new HttpResponseException(HttpStatusCode.NotFound);
        }
        public IDictionary<string, HttpControllerDescriptor> GetControllerMapping()
        {
            return _controllers.Value;
        }
        private Dictionary<string, HttpControllerDescriptor> InitializeControllerDictionary()
        {
            var dictionary = new Dictionary<string,
                HttpControllerDescriptor>(StringComparer.OrdinalIgnoreCase);
            var assembliesResolver = _configuration.Services.GetAssembliesResolver();
            var controllersResolver = _configuration.Services.GetHttpControllerTypeResolver();
            var controllerTypes = controllersResolver.GetControllerTypes(assembliesResolver);
            foreach (var controllerType in controllerTypes)
            {
                var segments = controllerType.Namespace.Split(Type.Delimiter);
                var controllerName =
                    controllerType.Name.Remove(controllerType.Name.Length -
                                               DefaultHttpControllerSelector.ControllerSuffix.Length);
                var controllerKey = string.Format(CultureInfo.InvariantCulture, "{0}.{1}",
                    segments[segments.Length - 1], controllerName);

                if (!dictionary.Keys.Contains(controllerKey))
                {
                    dictionary[controllerKey] = new HttpControllerDescriptor(_configuration,
                        controllerType.Name,
                        controllerType);
                }
            }
            return dictionary;
        }
        private static T GetRouteVariable<T>(IHttpRouteData routeData, string name)
        {
            object result;
            if (routeData.Values.TryGetValue(name, out result))
            {
                return (T)result;
            }
            return default(T);
        }
        private static string GetControllerName(IHttpRouteData routeData)
        {
            var subroute = routeData.GetSubRoutes().FirstOrDefault();
            var dataTokenValue = subroute?.Route.DataTokens.First().Value;
            var controllerName =
                ((HttpActionDescriptor[])dataTokenValue)?.First().ControllerDescriptor.ControllerName.Replace("Controller", string.Empty);
            return controllerName;
        }
        private static string GetVersion(IHttpRouteData routeData)
        {
            var subRouteData = routeData.GetSubRoutes().FirstOrDefault();
            return subRouteData == null ? null : GetRouteVariable<string>(subRouteData, "version");
        }
    }

public IDictionary<string, HttpControllerDescriptor> GetControllerMapping()

 public static class WebApiConfig
    {
        public static void Register(HttpConfiguration config)
        {
            var constraintsResolver = new DefaultInlineConstraintResolver();
            constraintsResolver.ConstraintMap.Add(nameof(VersionConstraint), typeof
            (VersionConstraint));

            config.MapHttpAttributeRoutes(constraintsResolver);

            config.Services.Replace(typeof(IHttpControllerSelector), new NamespaceControllerSelector(config));

        }
    }

public class HeaderVersionConstraint : IHttpRouteConstraint
    {
        private const string VersionHeaderName = "api-version";

        public HeaderVersionConstraint(int allowedVersion)
        {
            AllowedVersion = allowedVersion;
        }

        public int AllowedVersion { get; }

        public bool Match(HttpRequestMessage request, IHttpRoute route, string parameterName,
            IDictionary<string, object> values,
            HttpRouteDirection routeDirection)
        {
            if (!request.Headers.Contains(VersionHeaderName)) return false;

            var version = request.Headers.GetValues(VersionHeaderName).FirstOrDefault();

            return VersionToInt(version) == AllowedVersion;
        }
        private static int VersionToInt(string versionString)
        {
            int version;
            if (string.IsNullOrEmpty(versionString) || !int.TryParse(versionString, out version))
                return 0;
            return version;
        }
    }

public sealed class HeaderVersionedRouteAttribute : RouteFactoryAttribute
    {
        public HeaderVersionedRouteAttribute(string template) : base(template)
        {
            Order = -1;
        }

        public int Version { get; set; }

        public override IDictionary<string, object> Constraints => new HttpRouteValueDictionary
        {
            {"", new HeaderVersionConstraint(Version)}
        };
    }

    [RoutePrefix("api/items")]
    public class ItemsController : ApiController
    {
        [ResponseType(typeof(ItemViewModel))]
        [HeaderVersionedRoute("{id}", Version = 1)]
        public IHttpActionResult Get(int id)
        {
            var viewModel = new ItemViewModel { Id = id, Name = "PS4", Country = "Japan" };
            return Ok(viewModel);
        }
    }
  [RoutePrefix("api/items")]
    public class ItemsV2Controller : ApiController
    {
        [ResponseType(typeof(ItemV2ViewModel))]
        [HeaderVersionedRoute("{id}", Version = 2)]
        public IHttpActionResult Get(int id)
        {
            var viewModel = new ItemV2ViewModel { Id = id, Name = "Xbox One", Country = "USA", Price = 529.99 };
            return Ok(viewModel);
        }
    }

 npm install jalali-moment --save

import { DateAdapter } from "@angular/material";
import * as jalaliMoment from "jalali-moment";

export const PERSIAN_DATE_FORMATS = {
  parse: {
    dateInput: "jYYYY/jMM/jDD"
  },
  display: {
    dateInput: "jYYYY/jMM/jDD",
    monthYearLabel: "jYYYY jMMMM",
    dateA11yLabel: "jYYYY/jMM/jDD",
    monthYearA11yLabel: "jYYYY jMMMM"
  }
};

export class MaterialPersianDateAdapter extends DateAdapter<jalaliMoment.Moment> {

  constructor() {
    super();
    super.setLocale("fa");
  }

  getYear(date: jalaliMoment.Moment): number {
    return this.clone(date).jYear();
  }

  getMonth(date: jalaliMoment.Moment): number {
    return this.clone(date).jMonth();
  }

  getDate(date: jalaliMoment.Moment): number {
    return this.clone(date).jDate();
  }

  getDayOfWeek(date: jalaliMoment.Moment): number {
    return this.clone(date).day();
  }

  getMonthNames(style: "long" | "short" | "narrow"): string[] {
    switch (style) {
      case "long":
      case "short":
        return jalaliMoment.localeData("fa").jMonths().slice(0);
      case "narrow":
        return jalaliMoment.localeData("fa").jMonthsShort().slice(0);
    }
  }

  getDateNames(): string[] {
    const valuesArray = Array(31);
    for (let i = 0; i < 31; i++) {
      valuesArray[i] = String(i + 1);
    }
    return valuesArray;
  }

  getDayOfWeekNames(style: "long" | "short" | "narrow"): string[] {
    switch (style) {
      case "long":
        return jalaliMoment.localeData("fa").weekdays().slice(0);
      case "short":
        return jalaliMoment.localeData("fa").weekdaysShort().slice(0);
      case "narrow":
        return ["ی", "د", "س", "چ", "پ", "ج", "ش"];
    }
  }

  getYearName(date: jalaliMoment.Moment): string {
    return this.clone(date).jYear().toString();
  }

  getFirstDayOfWeek(): number {
    return jalaliMoment.localeData("fa").firstDayOfWeek();
  }

  getNumDaysInMonth(date: jalaliMoment.Moment): number {
    return this.clone(date).jDaysInMonth();
  }

  clone(date: jalaliMoment.Moment): jalaliMoment.Moment {
    return date.clone().locale("fa");
  }

  createDate(year: number, month: number, date: number): jalaliMoment.Moment {
    if (month < 0 || month > 11) {
      throw Error(
        `Invalid month index "${month}". Month index has to be between 0 and 11.`
      );
    }
    if (date < 1) {
      throw Error(`Invalid date "${date}". Date has to be greater than 0.`);
    }
    const result = jalaliMoment()
      .jYear(year).jMonth(month).jDate(date)
      .hours(0).minutes(0).seconds(0).milliseconds(0)
      .locale("fa");

    if (this.getMonth(result) !== month) {
      throw Error(`Invalid date ${date} for month with index ${month}.`);
    }
    if (!result.isValid()) {
      throw Error(`Invalid date "${date}" for month with index "${month}".`);
    }
    return result;
  }

  today(): jalaliMoment.Moment {
    return jalaliMoment().locale("fa");
  }

  parse(value: any, parseFormat: string | string[]): jalaliMoment.Moment | null {
    if (value && typeof value === "string") {
      return jalaliMoment(value, parseFormat, "fa");
    }
    return value ? jalaliMoment(value).locale("fa") : null;
  }

  format(date: jalaliMoment.Moment, displayFormat: string): string {
    date = this.clone(date);
    if (!this.isValid(date)) {
      throw Error("JalaliMomentDateAdapter: Cannot format invalid date.");
    }
    return date.format(displayFormat);
  }

  addCalendarYears(date: jalaliMoment.Moment, years: number): jalaliMoment.Moment {
    return this.clone(date).add(years, "jYear");
  }

  addCalendarMonths(date: jalaliMoment.Moment, months: number): jalaliMoment.Moment {
    return this.clone(date).add(months, "jmonth");
  }

  addCalendarDays(date: jalaliMoment.Moment, days: number): jalaliMoment.Moment {
    return this.clone(date).add(days, "jDay");
  }

  toIso8601(date: jalaliMoment.Moment): string {
    return this.clone(date).format();
  }

  isDateInstance(obj: any): boolean {
    return jalaliMoment.isMoment(obj);
  }

  isValid(date: jalaliMoment.Moment): boolean {
    return this.clone(date).isValid();
  }

  invalid(): jalaliMoment.Moment {
    return jalaliMoment.invalid();
  }

  deserialize(value: any): jalaliMoment.Moment | null {
    let date;
    if (value instanceof Date) {
      date = jalaliMoment(value);
    }
    if (typeof value === "string") {
      if (!value) {
        return null;
      }
      date = jalaliMoment(value).locale("fa");
    }
    if (date && this.isValid(date)) {
      return date;
    }
    return super.deserialize(value);
  }
}

import { NgModule } from "@angular/core";
import {  DateAdapter,  MAT_DATE_FORMATS,  MAT_DATE_LOCALE } from "@angular/material";

import { MaterialPersianDateAdapter, PERSIAN_DATE_FORMATS } from "./material.persian-date.adapter";

@NgModule({
  providers: [
    { provide: DateAdapter, useClass: MaterialPersianDateAdapter, deps: [MAT_DATE_LOCALE] },
    { provide: MAT_DATE_FORMATS, useValue: PERSIAN_DATE_FORMATS }
  ]
})
export class MaterialModule {
}

<mat-form-field>
    <input matInput [matDatepicker]="picker6" placeholder="json gregorian input" [(ngModel)]="dateControl">
    <mat-datepicker-toggle matSuffix [for]="picker6"></mat-datepicker-toggle>
    <mat-datepicker #picker6></mat-datepicker>
</mat-form-field>

<mat-form-field>
    <input matInput [matDatepicker]="picker6" placeholder="json gregorian input" [(ngModel)]="dateControl">
    <mat-datepicker-toggle matSuffix [for]="picker6"></mat-datepicker-toggle>
    <mat-datepicker #picker6></mat-datepicker>
</mat-form-field>

@Component()
export class PersianDatepickerComponent {

  jsonDate = "2018-01-08T20:21:29.4674496";
  dateControl = this.jsonDate;
}

<mat-form-field>
    <input matInput [matDatepicker]="picker2" placeholder="startAt 2017-01-01 and startView=year">
    <mat-datepicker-toggle matSuffix [for]="picker2"></mat-datepicker-toggle>
    <mat-datepicker #picker2 startView="year" [startAt]="startDate"></mat-datepicker>
</mat-form-field>

import * as moment from "jalali-moment";

@Component()
export class PersianDatepickerComponent  {

  startDate = moment("2017-01-01", "YYYY-MM-DD"); // = moment.from("2017-01-01", "en");
  
}

<mat-form-field>
    <input matInput [matDatepicker]="picker3" [min]="minDate" [max]="maxDate" placeholder="min: 2017-10-02 and max: 1396-07-29">
    <mat-datepicker-toggle matSuffix [for]="picker3"></mat-datepicker-toggle>
    <mat-datepicker #picker3></mat-datepicker>
</mat-form-field>

import * as moment from "jalali-moment";

@Component()
export class PersianDatepickerComponent  {

  minDate = moment.from("2017-10-02", "en"); // = moment('2017-10-02', 'YYYY-MM-DD');
  maxDate = moment.from("1396-07-29", "fa"); // = moment('1396-07-29', 'jYYYY-jMM-jDD');
}

<mat-form-field>
    <input matInput [matDatepicker]="picker4" [matDatepickerFilter]="myFilter" placeholder="Date validation - Datepicker Filter">
    <mat-datepicker-toggle matSuffix [for]="picker4"></mat-datepicker-toggle>
    <mat-datepicker #picker4></mat-datepicker>
</mat-form-field>

import * as moment from "jalali-moment";

@Component()
export class PersianDatepickerComponent {

  myFilter = (d: moment.Moment): boolean => {
    const day: number = d.day();
    // Prevent Thursday and Friday from being selected.
    return day !== 5 && day !== 4;
  }
}

<mat-form-field>
    <input matInput [matDatepicker]="picker5" (dateInput)="onInput($event)" (dateChange)="onChange($event)"
        placeholder="dateInput and dateChange events">
    <mat-datepicker-toggle matSuffix [for]="picker5"></mat-datepicker-toggle>
    <mat-datepicker #picker5></mat-datepicker>
</mat-form-field>

import { MatDatepickerInputEvent } from "@angular/material";
import * as moment from "jalali-moment";

@Component()
export class PersianDatepickerComponent {

  onInput(event: MatDatepickerInputEvent<moment.Moment>) {
    console.log("OnInput: ", event.value);
  }

  onChange(event: MatDatepickerInputEvent<moment.Moment>) {
    const x = moment(event.value).format("jYYYY/jMM/jDD");
    console.log("OnChange: ", x);
  }
}

using System.Net;
using System.Text;
using System.Text.RegularExpressions;
using System.Web.Mvc;

namespace DI06.Controllers
{
    public class HomeController : Controller
    {
        public ActionResult Index()
        {
            string result = string.Empty;
            using (var client = new WebClient { Encoding = Encoding.UTF8 })
            {
                result = client.DownloadString("https://www.dntips.ir/");
            }
            var match = new Regex(@"(?s)<title>(.+?)</title>", RegexOptions.IgnoreCase).Match(result);
            var title = match.Groups[1].Value.Trim();

            ViewBag.PageTitle = title;
            return View();
        }
    }
}

namespace DI06.Services
{
    public interface IWebClientServices
    {
        string FetchUrl(string url);
        string GetWebPageTitle(string url);
    }
}

using System.Net;
using System.Text;
using System.Text.RegularExpressions;

namespace DI06.Services
{
    public class WebClientServices : IWebClientServices
    {
        public string FetchUrl(string url)
        {
            using (var client = new WebClient { Encoding = Encoding.UTF8 })
            {
                return client.DownloadString(url);
            }
        }

        public string GetWebPageTitle(string url)
        {
            var html = FetchUrl(url);
            var match = new Regex(@"(?s)<title>(.+?)</title>", RegexOptions.IgnoreCase).Match(html);
            return match.Groups[1].Value.Trim();
        }
    }
}

using System.Web.Mvc;
using DI06.Services;

namespace DI06.Controllers
{
    public class HomeController : Controller
    {
        readonly IWebClientServices _webClientServices;
        public HomeController(IWebClientServices webClientServices)
        {
            _webClientServices = webClientServices;
        }

        public ActionResult Index()
        {
            ViewBag.PageTitle = _webClientServices.GetWebPageTitle("https://www.dntips.ir/");
            return View();
        }
    }
}

Events

Event Sourcing

• دوره Aspect oriented programming 
  
•  بررسی مفاهیم معکوس سازی وابستگی‌ها و ابزارهای مرتبط با آن
• طراحی و پیاده سازی ServiceLayer به همراه خودکارسازی Business Validationها 
  

پیش فرض ما این است که شما از EF به عنوان OR-Mapper استفاده می‌کنید و الگوی Context Per Request را پیاده سازی کرده اید یا از طریق پیاده سازی الگوی Container Per Request به داشتن Context یکتا برای هر درخواست رسیده اید.
کتابخانه StructureMap.Mvc5 پیاده سازی از الگوی Container Per Request را با استفاده از امکانات Nested Container مربوط به StructureMap ارائه می‌دهد. اشیاء موجود در Nested Container طول عمر Singleton دارند.

واسط ITransaction

    public interface ITransaction : IDisposable
    {
        void Commit();
        void Rollback();
    }

واسط IUnitOfWork

    public interface IUnitOfWork : IDisposable
    {
        ...

        ITransaction BeginTransaction(IsolationLevel isolationLevel = IsolationLevel.Snapshot);
        ITransaction Transaction { get; }
        IDbConnection Connection { get; }
        bool HasTransaction { get; }
    }

اعضای جدید واسط IUnitOfWork کاملا مشخص هستند.

پیاده سازی واسط ITransaction، توسط یک Nested Type در دل کلاس DbContextBase انجام می‌گیرد.

 public abstract class DbContextBase : DbContext
    {
        ...

        #region Fields
        
        private ITransaction _currenTransaction;

        #endregion

        #region NestedTypes

        private class DbContextTransactionAdapter : ITransaction
        {
            private DbContextTransaction _transaction;

            public DbContextTransactionAdapter(DbContextTransaction transaction)
            {
                Guard.NotNull(transaction, nameof(transaction));

                _transaction = transaction;
            }

            public void Commit()
            {
                _transaction?.Commit();
            }

            public void Rollback()
            {
                if (_transaction?.UnderlyingTransaction.Connection != null)
                    _transaction.Rollback();
            }

            public void Dispose()
            {
                _transaction?.Dispose();
                _transaction = null;
            }
        }

        #endregion

        #region Public Methods
        ...

        public ITransaction BeginTransaction(IsolationLevel isolationLevel = IsolationLevel.ReadCommitted)
        {
            if (_currenTransaction != null) return _currenTransaction;

            return _currenTransaction = new DbContextTransactionAdapter(Database.BeginTransaction(isolationLevel));
        }
        #endregion

        #region Properties
        ...

        public ITransaction Transaction => _currenTransaction;
        public IDbConnection Connection => Database.Connection;
        public bool HasTransaction => _currenTransaction != null;

        #endregion
}

public class ApplicationDbContext : DbContextBase, IUnitOfWork, ITransientDependency
{
     
}

TransactionalAttribute

    [AttributeUsage(AttributeTargets.Method | AttributeTargets.Class)]
    public sealed class TransactionalAttribute : Attribute
    {
        public IsolationLevel IsolationLevel { get; set; } = IsolationLevel.ReadCommitted;
        public TimeSpan? Timeout { get; set; }
    }

TransactionInterceptor

    public class TransactionInterceptor : ISyncInterceptionBehavior
    {
        private readonly IUnitOfWork _unitOfWork;

        public TransactionInterceptor(IUnitOfWork unitOfWork)
        {
            _unitOfWork = unitOfWork;
        }
        public IMethodInvocationResult Intercept(ISyncMethodInvocation methodInvocation)
        {
            var transactionAttribute = GetTransactionaAttributeOrNull(methodInvocation.InstanceMethodInfo);

            if (transactionAttribute == null || _unitOfWork.HasTransaction) return methodInvocation.InvokeNext();

            using (var transaction = _unitOfWork.BeginTransaction(transactionAttribute.IsolationLevel))
            {
                var result = methodInvocation.InvokeNext();

                if (result.Successful)
                    transaction.Commit();
                else
                {
                    transaction.Rollback();
                }

                return result;
            }
        }

        private static TransactionalAttribute GetTransactionaAttributeOrNull(MemberInfo methodInfo)
        {
            var transactionalAttribute =
                ReflectionHelper.GetAttributesOfMemberAndDeclaringType<TransactionalAttribute>(
                    methodInfo
                ).FirstOrDefault();

            return transactionalAttribute;
        }
    }

در آخر لازم است این Interceptor در تنظیمات اولیه StructureMap به شکل زیر معرفی شود:

Policies.Interceptors(new DynamicProxyInterceptorPolicy(
                type => typeof(IApplicationService).IsAssignableFrom(type), typeof(AuthorizationInterceptor), typeof(TransactionInterceptor), typeof(ValidationInterceptor)));

نکته: فرض کنید در بدنه اکشن متد یک کنترلر ASP.NET MVC یا ASP.NET Core، دو متد تراکنشی فراخوانی شود؛ در این صورت شاید لازم باشد که این دو متد طی یک تراکنش واحد به جای تراکنش‌های مجزا، اجرا شوند؛ بنابراین نیاز است از الگوی Transaction Per Request استفاده شود. برای این کار می‌توان یک ActionFilterAttribute سفارشی ایجاد کرد که ایجاد کننده تراکنش باشد و متدهای داخلی که هر کدام جدا تراکنشی بودند، نیز از تراکنش ایجاد شده استفاده کنند.

public class StructureMapControllerFactory : DefaultControllerFactory
    {
        protected override IController GetControllerInstance(RequestContext requestContext, Type controllerType)
        {
            return ObjectFactory.GetInstance(controllerType) as Controller;
        }
    }

 ControllerBuilder.Current.SetControllerFactory(new StructureMapControllerFactory());

* نکته: پروژه انگیولار متریال ۲ در زمان نوشتن این مقاله به تازگی نسخه بتا ۵ را ارائه داده و همچنان در حال توسعه است. این بدان معنی است که ممکن است همه چیز به سرعت تغییر یابد. 

مقدمه

انگیولار متریال ۲ همانند انگیولار متریال یک، تمامی المانهای مورد نیاز برای طراحی یک برنامه تک صفحه‌ای را به راحتی فراهم می‌کند (هرچند تمامی المانهای آن در نسخه بتا پیاده سازی نشده‌اند). خبر خوب اینکه، اکثر کامپوننتهای ارائه شده در انگیولار متریال ۲ از قالب راست به چپ پشتیبانی می‌کنند و اعمال این قالب به سادگی اضافه کردن خصوصیت dir یک المان به rtl است.

در صفحه گیت‌هاب انگیولار متریال ۲ آمده‌است که انگیولار متریال ۲، واسط‌های کاربری با کیفیت بالا را ارائه می‌دهد و در ادامه منظورش را از «کیفیت بالا»، اینگونه بیان می‌کند:

1. بین‌المللی و قابل دسترس برای همه به نحوی که تمامی کاربران می‌توانند از آنها استفاده کنند (عدم مشکل در چند زبانه بودن و پشتیبانی از قالب راست به چپ و چپ به راست) .
   
2. دارای APIهای ساده برای توسعه دهندگان. 
   
3. رفتار مورد انتظار و بدون خطا در تمامی موردهای کاری

4. تست تمامی رفتارها توسط تست یکپارچگی (unit test ) و تست واحد ( integration test ) 
   

5. قابلیت سفارشی سازی در چارچوب طراحی متریال 
   

6. بهره‌وری بالا 
   

7. کد تمیز و مستندات خوب 
   

شروع کار با انگیولار متریال ۲ 

قدم اول: نصب angular-material و hammerjs

برای شروع بایستی Angular Material و angular animations و hammer.js را توسط npm به صورت زیر نصب کنید.

npm install --save @angular/material @angular/animations

npm install --save hammerjs

angular/material@: بسته مربوط به انگیولار متریال دو را نصب خواهد کرد.

angular/animations@: این بسته امکاناتی جهت ساخت افکت‌های ویژه هنگام تغییر صفحات، یا بارگذاری المنت‌ها را از طریق کدهای css نوشته شده، به راحتی امکان‌پذیر می‌کند.

Hammerjs: برخی از کامپوننتهای موجود در انگیولار متریال ۲ وابسته به کتابخانه Hammerjs هستند. (از جمله md-slide-toggle و md-slider, mdTooltip)

"scripts": [
  "../node_modules/hammerjs/hammer.min.js"
],

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpModule } from '@angular/http';

import { MaterialModule } from '@angular/material';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';

import { AppComponent } from './app.component';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    HttpModule,

    MaterialModule,
    BrowserAnimationsModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

@import '~https://fonts.googleapis.com/icon?family=Material+Icons';
@import '~@angular/material/prebuilt-themes/deeppurple-amber.css';

<md-sidenav-container>
  
  <md-sidenav #end align="end" opened="true" mode="side">
    
    <md-toolbar color="accent">
      <div>
        <md-toolbar-row>
          <img src="https://material.angular.io/favicon.ico" style="height:50px;margin-top: 2px; margin-bottom: 2px;">
          <span>
            برنامه من
          </span>
        </md-toolbar-row>
      </div>
    </md-toolbar>
    
    <md-nav-list>
      <md-list-item [routerLink]="['/']">
        <div>
          <div></div>
          <md-icon role="img" aria-label="home">home</md-icon>
          <span>خانه</span>
        </div>
      </md-list-item>
    </md-nav-list>

    <md-nav-list>
      <md-list-item [routerLink]="['/registries']">
        <div>
          <div></div>
          <md-icon role="img" aria-label="forms">content_paste</md-icon>
          <span>فرم</span>
        </div>
      </md-list-item>
    </md-nav-list>

    <md-nav-list>
      <md-list-item href="/charts">
        <div>
          <div></div>
          <md-icon role="img" aria-label="charts">show_chart</md-icon>
          <span>نمودارها</span>
        </div>
      </md-list-item>
    </md-nav-list>
  </md-sidenav>

  <header>
    <md-toolbar color="primary">
      <button md-icon-button (click)="end.toggle()">
        <md-icon>menu</md-icon>
      </button>
      <span>داشبورد</span>
      
      <button md-icon-button [md-menu-trigger-for]="menu">
        <md-icon>person</md-icon>
      </button>

    </md-toolbar>

    <md-menu x-position="before" #menu="mdMenu">
      <button md-menu-item>تنظیمات</button>
      <button md-menu-item>خروج</button>
    </md-menu>

  </header>

  <main>
    <router-outlet></router-outlet>
  </main>

</md-sidenav-container>

<span>
  <button md-fab>
    <md-icon>check circle</md-icon>
  </button>
</span>

html, body, material-app, md-sidenav-container, .my-content {
  margin: 0;
  direction: rtl;
  width: 100%;
  height: 100%;
}

.mat-button-toggle,
.mat-button-base,
.mat-button,
.mat-raised-button,
.mat-fab,
.mat-icon-button,
.mat-mini-fab,
.mat-card,
.mat-checkbox,
.mat-input-container,
.mat-list,
.mat-menu-item,
.mat-radio-button,
.mat-select,
.mat-list .mat-list-item .mat-list-item-content,
.mat-nav-list .mat-list-item .mat-list-item-content,
.mat-simple-snackbar,
.mat-tab-label,
.mat-slide-toggle-content,
.mat-toolbar,
.mat-tooltip { font-family: 'Iranian Sans', Tahoma !important; 
}

md-sidenav {
  width: 225px;
  max-width: 70%;
}

  md-sidenav md-nav-list {
    display: block;
  }

    md-sidenav md-nav-list :hover {
      background-color: rgb(250, 250, 250);
    }



    md-sidenav md-nav-list .md-list-item {
      cursor: pointer;
    }

.side-navigation {
  padding-top: 0;
}

md-nav-list.side-navigation a[md-list-item] > .md-list-item > span.title {
  margin-right: 10px;
}

md-nav-list.side-navigation a[md-list-item] > .md-list-item {
  -webkit-font-smoothing: antialiased;
  letter-spacing: .14px;
}

md-list a[md-list-item] .md-list-item, md-list md-list-item .md-list-item, md-nav-list a[md-list-item] .md-list-item, md-nav-list md-list-item .md-list-item {
  display: flex;
  flex-direction: row;
  align-items: center;
  box-sizing: border-box;
  height: 48px;
  padding: 0 16px;
}

button.my-fab {
  position: absolute;
  right: 20px;
  bottom: 10px;
}

md-card {
  margin: 1em;
}

md-toolbar-row {
  justify-content: space-between;
}

.done {
  position: fixed;
  bottom: 20px;
  left: 20px;
  color: white;
}

md-nav-list.side-navigation a[md-list-item] {
  position: relative;
}

md-list a[md-list-item], md-list md-list-item, md-nav-list a[md-list-item], md-nav-list md-list-item {
  display: block;
}

md-list a[md-list-item], md-list md-list-item, md-nav-list a[md-list-item], md-nav-list md-list-item {
  color: #000;
}

md-nav-list a {
  text-decoration: none;
  color: inherit;
}

a {
  color: #039be5;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

.no-padding {
  padding: 0 !important;
}