Merge pull request #4028 from mempool/nymkappa/search-autofocus

[search bar] only autofocus when in `/`, `/mining` and `/lightning`

frontend/src/app/components/mining-dashboard/mining-dashboard.component.ts

@@ -1,6 +1,8 @@
-import { ChangeDetectionStrategy, Component, OnInit } from '@angular/core';
+import { AfterViewInit, ChangeDetectionStrategy, Component, OnInit } from '@angular/core';
 import { SeoService } from '../../services/seo.service';
 import { WebsocketService } from '../../services/websocket.service';
+import { StateService } from '../../services/state.service';
+import { EventType, NavigationStart, Router } from '@angular/router';
 
 @Component({
   selector: 'app-mining-dashboard',
@@ -8,10 +10,12 @@ import { WebsocketService } from '../../services/websocket.service';
   styleUrls: ['./mining-dashboard.component.scss'],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class MiningDashboardComponent implements OnInit {
+export class MiningDashboardComponent implements OnInit, AfterViewInit {
   constructor(
     private seoService: SeoService,
     private websocketService: WebsocketService,
+    private stateService: StateService,
+    private router: Router
   ) {
     this.seoService.setTitle($localize`:@@a681a4e2011bb28157689dbaa387de0dd0aa0c11:Mining Dashboard`);
   }
@@ -19,4 +23,15 @@ export class MiningDashboardComponent implements OnInit {
   ngOnInit(): void {
     this.websocketService.want(['blocks', 'mempool-blocks', 'stats']);
   }
+
+  ngAfterViewInit(): void {
+    this.stateService.focusSearchInputDesktop();
+    this.router.events.subscribe((e: NavigationStart) => {
+      if (e.type === EventType.NavigationStart) {
+        if (e.url.indexOf('graphs') === -1) { // The mining dashboard and the graph component are part of the same module so we can't use ngAfterViewInit in graphs.component.ts to blur the input
+          this.stateService.focusSearchInputDesktop(); 
+        }
+      }
+    });
+  }
 }

frontend/src/app/components/search-form/search-form.component.html

@@ -1,7 +1,7 @@
 <form [formGroup]="searchForm" (submit)="searchForm.valid && search()" novalidate>
   <div class="d-flex">
     <div class="search-box-container mr-2">
-      <input autofocus (focus)="focus$.next($any($event).target.value)" (click)="click$.next($any($event).target.value)" formControlName="searchText" type="text" class="form-control" i18n-placeholder="search-form.searchbar-placeholder" placeholder="Explore the full Bitcoin ecosystem">
+      <input #searchInput (focus)="focus$.next($any($event).target.value)" (click)="click$.next($any($event).target.value)" formControlName="searchText" type="text" class="form-control" i18n-placeholder="search-form.searchbar-placeholder" placeholder="Explore the full Bitcoin ecosystem">
       <app-search-results #searchResults [hidden]="dropdownHidden" [results]="typeAhead$ | async" (selectedResult)="selectedResult($event)"></app-search-results>
     </div>
     <div>

frontend/src/app/components/search-form/search-form.component.ts

@@ -1,6 +1,6 @@
 import { Component, OnInit, ChangeDetectionStrategy, EventEmitter, Output, ViewChild, HostListener, ElementRef } from '@angular/core';
 import { UntypedFormBuilder, UntypedFormGroup, Validators } from '@angular/forms';
-import { Router } from '@angular/router';
+import { EventType, NavigationStart, Router } from '@angular/router';
 import { AssetsService } from '../../services/assets.service';
 import { StateService } from '../../services/state.service';
 import { Observable, of, Subject, zip, BehaviorSubject, combineLatest } from 'rxjs';
@@ -47,6 +47,8 @@ export class SearchFormComponent implements OnInit {
     this.handleKeyDown($event);
   }
 
+  @ViewChild('searchInput') searchInput: ElementRef;
+
   constructor(
     private formBuilder: UntypedFormBuilder,
     private router: Router,
@@ -55,11 +57,26 @@ export class SearchFormComponent implements OnInit {
     private electrsApiService: ElectrsApiService,
     private apiService: ApiService,
     private relativeUrlPipe: RelativeUrlPipe,
-    private elementRef: ElementRef,
-  ) { }
+    private elementRef: ElementRef
+  ) {
+  }
 
   ngOnInit(): void {
     this.stateService.networkChanged$.subscribe((network) => this.network = network);
+    
+    this.router.events.subscribe((e: NavigationStart) => { // Reset search focus when changing page
+      if (this.searchInput && e.type === EventType.NavigationStart) {
+        this.searchInput.nativeElement.blur();
+      }
+    });
+
+    this.stateService.searchFocus$.subscribe(() => {
+      if (!this.searchInput) { // Try again a bit later once the view is properly initialized
+        setTimeout(() => this.searchInput.nativeElement.focus(), 100);
+      } else if (this.searchInput) {
+        this.searchInput.nativeElement.focus();
+      }
+    });
 
     this.searchForm = this.formBuilder.group({
       searchText: ['', Validators.required],

frontend/src/app/dashboard/dashboard.component.ts

@@ -1,7 +1,7 @@
-import { ChangeDetectionStrategy, Component, OnDestroy, OnInit } from '@angular/core';
+import { AfterViewInit, ChangeDetectionStrategy, Component, OnDestroy, OnInit } from '@angular/core';
 import { combineLatest, merge, Observable, of, Subscription } from 'rxjs';
 import { filter, map, scan, share, switchMap, tap } from 'rxjs/operators';
-import { BlockExtended, OptimizedMempoolStats, RbfTree } from '../interfaces/node-api.interface';
+import { BlockExtended, OptimizedMempoolStats } from '../interfaces/node-api.interface';
 import { MempoolInfo, TransactionStripped, ReplacementInfo } from '../interfaces/websocket.interface';
 import { ApiService } from '../services/api.service';
 import { StateService } from '../services/state.service';
@@ -31,7 +31,7 @@ interface MempoolStatsData {
   styleUrls: ['./dashboard.component.scss'],
   changeDetection: ChangeDetectionStrategy.OnPush
 })
-export class DashboardComponent implements OnInit, OnDestroy {
+export class DashboardComponent implements OnInit, OnDestroy, AfterViewInit {
   featuredAssets$: Observable<any>;
   network$: Observable<string>;
   mempoolBlocksData$: Observable<MempoolBlocksData>;
@@ -57,6 +57,10 @@ export class DashboardComponent implements OnInit, OnDestroy {
     private seoService: SeoService
   ) { }
 
+  ngAfterViewInit(): void {
+    this.stateService.focusSearchInputDesktop();
+  }
+
   ngOnDestroy(): void {
     this.currencySubscription.unsubscribe();
     this.websocketService.stopTrackRbfSummary();

frontend/src/app/lightning/lightning-dashboard/lightning-dashboard.component.ts

@@ -1,4 +1,4 @@
-import { ChangeDetectionStrategy, Component, OnInit } from '@angular/core';
+import { AfterViewInit, ChangeDetectionStrategy, Component, OnInit } from '@angular/core';
 import { Observable } from 'rxjs';
 import { share } from 'rxjs/operators';
 import { INodesRanking } from '../../interfaces/node-api.interface';
@@ -12,7 +12,7 @@ import { LightningApiService } from '../lightning-api.service';
   styleUrls: ['./lightning-dashboard.component.scss'],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class LightningDashboardComponent implements OnInit {
+export class LightningDashboardComponent implements OnInit, AfterViewInit {
   statistics$: Observable<any>;
   nodesRanking$: Observable<INodesRanking>;
   officialMempoolSpace = this.stateService.env.OFFICIAL_MEMPOOL_SPACE;
@@ -30,4 +30,7 @@ export class LightningDashboardComponent implements OnInit {
     this.statistics$ = this.lightningApiService.getLatestStatistics$().pipe(share());
   }
 
+  ngAfterViewInit(): void {
+    this.stateService.focusSearchInputDesktop();
+  }
 }

frontend/src/app/services/state.service.ts

@@ -7,6 +7,7 @@ import { Router, NavigationStart } from '@angular/router';
 import { isPlatformBrowser } from '@angular/common';
 import { filter, map, scan, shareReplay } from 'rxjs/operators';
 import { StorageService } from './storage.service';
+import { hasTouchScreen } from '../shared/pipes/bytes-pipe/utils';
 
 export interface MarkBlockState {
   blockHeight?: number;
@@ -139,6 +140,8 @@ export class StateService {
   fiatCurrency$: BehaviorSubject<string>;
   rateUnits$: BehaviorSubject<string>;
 
+  searchFocus$: Subject<boolean> = new Subject<boolean>();
+
   constructor(
     @Inject(PLATFORM_ID) private platformId: any,
     @Inject(LOCALE_ID) private locale: string,
@@ -356,4 +359,10 @@ export class StateService {
     this.blocks = this.blocks.slice(0, this.env.KEEP_BLOCKS_AMOUNT);
     this.blocksSubject$.next(this.blocks);
   }
+
+  focusSearchInputDesktop() {
+    if (!hasTouchScreen()) {
+      this.searchFocus$.next(true);
+    }    
+  }
 }

frontend/src/app/shared/pipes/bytes-pipe/utils.ts

@@ -309,3 +309,28 @@ export function takeWhile(input: any[], predicate: CollectionPredicate) {
   return takeUntil(input, (item: any, index: number | undefined, collection: any[] | undefined) =>
     !predicate(item, index, collection));
 }
+
+// https://developer.mozilla.org/en-US/docs/Web/HTTP/Browser_detection_using_the_user_agent
+export function hasTouchScreen(): boolean {
+  let hasTouchScreen = false;
+  if ('maxTouchPoints' in navigator) {
+    hasTouchScreen = navigator.maxTouchPoints > 0;
+  } else if ('msMaxTouchPoints' in navigator) {
+    // @ts-ignore
+    hasTouchScreen = navigator.msMaxTouchPoints > 0;
+  } else {
+    const mQ = matchMedia?.('(pointer:coarse)');
+    if (mQ?.media === '(pointer:coarse)') {
+      hasTouchScreen = !!mQ.matches;
+    } else if ('orientation' in window) {
+      hasTouchScreen = true; // deprecated, but good fallback
+    } else {
+      // @ts-ignore - Only as a last resort, fall back to user agent sniffing
+    const UA = navigator.userAgent;
+      hasTouchScreen =
+        /\b(BlackBerry|webOS|iPhone|IEMobile)\b/i.test(UA) ||
+        /\b(Android|Windows Phone|iPad|iPod)\b/i.test(UA);
+    }
+  }
+  return hasTouchScreen;
+}