2 files changed, 19 insertions, 16 deletions

diff --git a/client/src/app/shared/misc/help.component.ts b/client/src/app/shared/misc/help.component.ts
index 19ac38b58..89dd1dae5 100644
--- a/client/src/app/shared/misc/help.component.ts
+++ b/client/src/app/shared/misc/help.component.ts
@@ -1,4 +1,4 @@
-import { Component, ElementRef, HostListener, Input, OnInit, ViewChild } from '@angular/core'
+import { Component, ElementRef, HostListener, Input, OnInit, ViewChild, OnChanges } from '@angular/core'
 import { MarkdownService } from '@app/videos/shared'
 import { TooltipDirective } from 'ngx-bootstrap/tooltip'
 
@@ -8,7 +8,7 @@ import { TooltipDirective } from 'ngx-bootstrap/tooltip'
   templateUrl: './help.component.html'
 })
 
-export class HelpComponent implements OnInit {
+export class HelpComponent implements OnInit, OnChanges {
   @ViewChild('tooltipDirective') tooltipDirective: TooltipDirective
   @Input() preHtml = ''
   @Input() postHtml = ''
@@ -20,6 +20,23 @@ export class HelpComponent implements OnInit {
   constructor (private elementRef: ElementRef) { }
 
   ngOnInit () {
+    this.init()
+  }
+
+  ngOnChanges () {
+    this.init()
+  }
+
+  @HostListener('document:click', ['$event.target'])
+  public onClick (targetElement) {
+    const clickedInside = this.elementRef.nativeElement.contains(targetElement)
+
+    if (this.tooltipDirective.isOpen && !clickedInside) {
+      this.tooltipDirective.hide()
+    }
+  }
+
+  private init () {
     if (this.helpType === 'custom') {
       this.mainHtml = this.customHtml
       return
@@ -36,15 +53,6 @@ export class HelpComponent implements OnInit {
     }
   }
 
-  @HostListener('document:click', ['$event.target'])
-  public onClick (targetElement) {
-    const clickedInside = this.elementRef.nativeElement.contains(targetElement)
-
-    if (this.tooltipDirective.isOpen && !clickedInside) {
-      this.tooltipDirective.hide()
-    }
-  }
-
   private formatMarkdownSupport (rules: string[]) {
     return '<a href="https://en.wikipedia.org/wiki/Markdown#Example" target="_blank" rel="noopener noreferrer">Markdown</a> ' +
       'compatible that supports:' +
diff --git a/client/src/app/shared/misc/utils.ts b/client/src/app/shared/misc/utils.ts
index d520b1a7b..99f6b3cf0 100644
--- a/client/src/app/shared/misc/utils.ts
+++ b/client/src/app/shared/misc/utils.ts
@@ -17,10 +17,6 @@ function getParameterByName (name: string, url: string) {
   return decodeURIComponent(results[2].replace(/\+/g, ' '))
 }
 
-function viewportHeight () {
-  return Math.max(document.documentElement.clientHeight, window.innerHeight || 0)
-}
-
 function populateAsyncUserVideoChannels (authService: AuthService, channel: any[]) {
   return new Promise(res => {
     authService.userInformationLoaded
@@ -99,7 +95,6 @@ function isInMobileView () {
 }
 
 export {
-  viewportHeight,
   getParameterByName,
   populateAsyncUserVideoChannels,
   getAbsoluteAPIUrl,