Reversible blockchain components

frontend/src/app/components/blockchain/blockchain.component.html

@@ -1,9 +1,13 @@
-<div class="text-center" class="blockchain-wrapper" #container>
-  <div class="position-container {{ network }}">
+<div class="text-center" class="blockchain-wrapper" [class.time-ltr]="timeLtr" [class.ltr-transition]="ltrTransitionEnabled" #container>
+  <div class="position-container" [class]="['position-container']">
     <span>
-      <app-mempool-blocks></app-mempool-blocks>
-      <app-blockchain-blocks></app-blockchain-blocks>
-      <div id="divider"></div>
+      <div class="blocks-wrapper">
+        <app-mempool-blocks></app-mempool-blocks>
+        <app-blockchain-blocks></app-blockchain-blocks>
+      </div>
+      <div id="divider">
+        <button class="time-toggle" (click)="toggleTimeDirection()"><fa-icon [icon]="['fas', 'arrows-rotate']" [fixedWidth]="true"></fa-icon></button>
+      </div>
     </span>
   </div>
 </div>

frontend/src/app/components/blockchain/blockchain.component.scss

@@ -16,7 +16,7 @@
 .blockchain-wrapper {
   height: 250px;
 
-  -webkit-user-select: none; /* Safari */        
+  -webkit-user-select: none; /* Safari */
   -moz-user-select: none; /* Firefox */
   -ms-user-select: none; /* IE10+/Edge */
   user-select: none; /* Standard */
@@ -24,23 +24,46 @@
 
 .position-container {
   position: absolute;
-  left: 50%;
+  left: 0;
   top: 75px;
+  transform: translateX(50vw);
+  transition: transform 1s;
 }
 
 .position-container.liquid, .position-container.liquidtestnet {
-  left: 420px;
+  transform: translateX(420px);
+}
+
+@media (min-width: 768px) {
+  .blockchain-wrapper.time-ltr {
+    .position-container.liquid, .position-container.liquidtestnet {
+      transform: translateX(calc(100vw - 420px));
+    }
+  }
 }
 
 @media (max-width: 767.98px) {
-  .position-container {
-    left: 95%;
+  .blockchain-wrapper {
+    .position-container {
+      transform: translateX(95vw);
+    }
+    .position-container.liquid, .position-container.liquidtestnet {
+      transform: translateX(50vw);
+    }
+    .position-container.loading {
+      transform: translateX(50vw);
+    }
   }
-  .position-container.liquid, .position-container.liquidtestnet {
-    left: 50%;
-  }
-  .position-container.loading {
-    left: 50%;
+  .blockchain-wrapper.time-ltr {
+    .position-container {
+      transform: translateX(5vw);
+    }
+    .position-container.liquid, .position-container.liquidtestnet {
+      transform: translateX(50vw);
+    }
+    .position-container.loading {
+      transform: translateX(50vw);
+    }
   }
 }
 
@@ -57,4 +80,31 @@
   width: 300px;
   left: -150px;
   top: 0px;
+}
+
+.time-toggle {
+  color: white;
+  font-size: 1rem;
+  position: absolute;
+  bottom: -1.5em;
+  left: 1px;
+  transform: translateX(-50%);
+  background: none;
+  border: none;
+  outline: none;
+  margin: 0;
+  padding: 0;
+  transition: transform 1s;
+}
+
+.blockchain-wrapper.ltr-transition .blocks-wrapper {
+  transition: transform 1s;
+}
+
+.blockchain-wrapper.time-ltr .blocks-wrapper {
+  transform: scaleX(-1);
+}
+
+.blockchain-wrapper.time-ltr .time-toggle {
+  transform: translateX(-50%) scaleX(-1);
 }

frontend/src/app/components/blockchain/blockchain.component.ts

@@ -1,4 +1,5 @@
-import { Component, OnInit, ChangeDetectionStrategy } from '@angular/core';
+import { Component, OnInit, OnDestroy, ChangeDetectionStrategy } from '@angular/core';
+import { Subscription } from 'rxjs';
 import { StateService } from '../../services/state.service';
 
 @Component({
@@ -7,8 +8,11 @@ import { StateService } from '../../services/state.service';
   styleUrls: ['./blockchain.component.scss'],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class BlockchainComponent implements OnInit {
+export class BlockchainComponent implements OnInit, OnDestroy {
   network: string;
+  timeLtrSubscription: Subscription;
+  timeLtr: boolean = this.stateService.timeLtr.value;
+  ltrTransitionEnabled = false;
 
   constructor(
     public stateService: StateService,
@@ -16,5 +20,17 @@ export class BlockchainComponent implements OnInit {
 
   ngOnInit() {
     this.network = this.stateService.network;
+    this.timeLtrSubscription = this.stateService.timeLtr.subscribe((ltr) => {
+      this.timeLtr = !!ltr;
+    });
+  }
+
+  ngOnDestroy() {
+    this.timeLtrSubscription.unsubscribe();
+  }
+
+  toggleTimeDirection() {
+    this.ltrTransitionEnabled = true;
+    this.stateService.timeLtr.next(!this.timeLtr);
   }
 }