From 9816efb81688c91cdb3d4e2a4188b7301bf76758 Mon Sep 17 00:00:00 2001
From: jonaswinkler <17569239+jonaswinkler@users.noreply.github.com>
Date: Fri, 5 Mar 2021 23:19:44 +0100
Subject: [PATCH] Revert "Merge pull request #628 from
 shamoon/feature/popover-previews"

This reverts commit 8da15215087e4b7d605dc7fd32985fb5a656ff5d, reversing
changes made to a7846925b1892c7c1148723b559135bc0fd7e47d.
---
 src-ui/package.json                           |  1 +
 src-ui/src/app/app.module.ts                  |  2 +
 .../document-detail.component.html            | 17 ++++++-
 .../document-detail.component.ts              | 12 +++++
 .../document-card-large.component.html        | 15 ++----
 .../document-card-large.component.ts          | 47 ++----------------
 .../document-card-small.component.html        | 14 +-----
 .../document-card-small.component.ts          | 48 ++-----------------
 .../document-list.component.html              |  2 +-
 .../popover-preview/popover-preview.scss      | 22 ---------
 .../manage/settings/settings.component.html   | 15 +++++-
 .../manage/settings/settings.component.ts     |  2 +
 src-ui/src/app/services/settings.service.ts   |  2 +
 src-ui/src/theme_dark.scss                    | 23 ---------
 14 files changed, 61 insertions(+), 161 deletions(-)
 delete mode 100644 src-ui/src/app/components/document-list/popover-preview/popover-preview.scss

diff --git a/src-ui/package.json b/src-ui/package.json
index b005d843a..595228501 100644
--- a/src-ui/package.json
+++ b/src-ui/package.json
@@ -25,6 +25,7 @@
     "bootstrap": "^4.5.0",
     "file-saver": "^2.0.5",
     "ng-bootstrap": "^1.6.3",
+    "ng2-pdf-viewer": "^6.3.2",
     "ngx-color": "^6.2.0",
     "ngx-cookie-service": "^10.1.1",
     "ngx-file-drop": "^10.0.0",
diff --git a/src-ui/src/app/app.module.ts b/src-ui/src/app/app.module.ts
index dc8b185ea..be7ea2d0b 100644
--- a/src-ui/src/app/app.module.ts
+++ b/src-ui/src/app/app.module.ts
@@ -47,6 +47,7 @@ import { SavedViewWidgetComponent } from './components/dashboard/widgets/saved-v
 import { StatisticsWidgetComponent } from './components/dashboard/widgets/statistics-widget/statistics-widget.component';
 import { UploadFileWidgetComponent } from './components/dashboard/widgets/upload-file-widget/upload-file-widget.component';
 import { WidgetFrameComponent } from './components/dashboard/widgets/widget-frame/widget-frame.component';
+import { PdfViewerModule } from 'ng2-pdf-viewer';
 import { WelcomeWidgetComponent } from './components/dashboard/widgets/welcome-widget/welcome-widget.component';
 import { YesNoPipe } from './pipes/yes-no.pipe';
 import { FileSizePipe } from './pipes/file-size.pipe';
@@ -143,6 +144,7 @@ registerLocaleData(localeRo)
     ReactiveFormsModule,
     NgxFileDropModule,
     InfiniteScrollModule,
+    PdfViewerModule,
     NgSelectModule,
     ColorSliderModule
   ],
diff --git a/src-ui/src/app/components/document-detail/document-detail.component.html b/src-ui/src/app/components/document-detail/document-detail.component.html
index 79215c51c..f9b87aee3 100644
--- a/src-ui/src/app/components/document-detail/document-detail.component.html
+++ b/src-ui/src/app/components/document-detail/document-detail.component.html
@@ -1,4 +1,14 @@
 <app-page-header [(title)]="title">
+    <div class="input-group input-group-sm mr-5 d-none d-md-flex" *ngIf="getContentType() == 'application/pdf' && !useNativePdfViewer">
+      <div class="input-group-prepend">
+        <div class="input-group-text" i18n>Page</div>
+      </div>
+      <input class="form-control flex-grow-0 w-auto" type="number" min="1" [max]="previewNumPages" [(ngModel)]="previewCurrentPage" />
+      <div class="input-group-append">
+        <div class="input-group-text" i18n>of {{previewNumPages}}</div>
+      </div>
+    </div>
+
     <button type="button" class="btn btn-sm btn-outline-danger mr-2 ml-auto" (click)="delete()">
         <svg class="buttonicon" fill="currentColor">
             <use xlink:href="assets/bootstrap-icons.svg#trash" />
@@ -125,7 +135,12 @@
 
     <div class="col-md-6 col-xl-8 mb-3">
         <ng-container *ngIf="getContentType() == 'application/pdf'">
-          <object [data]="previewUrl | safe" class="preview-sticky" width="100%"></object>
+            <div class="preview-sticky pdf-viewer-container" *ngIf="!useNativePdfViewer ; else nativePdfViewer">
+                <pdf-viewer [src]="previewUrl" [original-size]="false" [show-borders]="true" [show-all]="true" [(page)]="previewCurrentPage" [render-text-mode]="2" (after-load-complete)="pdfPreviewLoaded($event)"></pdf-viewer>
+            </div>
+            <ng-template #nativePdfViewer>
+                <object [data]="previewUrl | safe" type="application/pdf" class="preview-sticky" width="100%"></object>
+            </ng-template>
         </ng-container>
         <ng-container *ngIf="getContentType() == 'text/plain'">
             <object [data]="previewUrl | safe" type="text/plain" class="preview-sticky" width="100%"></object>
diff --git a/src-ui/src/app/components/document-detail/document-detail.component.ts b/src-ui/src/app/components/document-detail/document-detail.component.ts
index 27360a811..af98a6f7f 100644
--- a/src-ui/src/app/components/document-detail/document-detail.component.ts
+++ b/src-ui/src/app/components/document-detail/document-detail.component.ts
@@ -15,6 +15,7 @@ import { DocumentService } from 'src/app/services/rest/document.service';
 import { ConfirmDialogComponent } from '../common/confirm-dialog/confirm-dialog.component';
 import { CorrespondentEditDialogComponent } from '../manage/correspondent-list/correspondent-edit-dialog/correspondent-edit-dialog.component';
 import { DocumentTypeEditDialogComponent } from '../manage/document-type-list/document-type-edit-dialog/document-type-edit-dialog.component';
+import { PDFDocumentProxy } from 'ng2-pdf-viewer';
 import { ToastService } from 'src/app/services/toast.service';
 import { TextComponent } from '../common/input/text/text.component';
 import { SettingsService, SETTINGS_KEYS } from 'src/app/services/settings.service';
@@ -60,6 +61,9 @@ export class DocumentDetailComponent implements OnInit {
     tags: new FormControl([])
   })
 
+  previewCurrentPage: number = 1
+  previewNumPages: number = 1
+
   constructor(
     private documentsService: DocumentService,
     private route: ActivatedRoute,
@@ -73,6 +77,10 @@ export class DocumentDetailComponent implements OnInit {
     private toastService: ToastService,
     private settings: SettingsService) { }
 
+  get useNativePdfViewer(): boolean {
+    return this.settings.get(SETTINGS_KEYS.USE_NATIVE_PDF_VIEWER)
+  }
+
   getContentType() {
     return this.metadata?.has_archive_version ? 'application/pdf' : this.metadata?.original_mime_type
   }
@@ -218,4 +226,8 @@ export class DocumentDetailComponent implements OnInit {
     return this.documentListViewService.hasNext(this.documentId)
   }
 
+  pdfPreviewLoaded(pdf: PDFDocumentProxy) {
+    this.previewNumPages = pdf.numPages
+  }
+
 }
diff --git a/src-ui/src/app/components/document-list/document-card-large/document-card-large.component.html b/src-ui/src/app/components/document-list/document-card-large/document-card-large.component.html
index 71dac6a57..e1ad87bcc 100644
--- a/src-ui/src/app/components/document-list/document-card-large/document-card-large.component.html
+++ b/src-ui/src/app/components/document-list/document-card-large/document-card-large.component.html
@@ -1,4 +1,4 @@
-<div class="card mb-3 shadow-sm" [class.card-selected]="selected" [class.document-card]="selectable" [class.popover-hidden]="popoverHidden" (mouseleave)="mouseLeaveCard()">
+<div class="card mb-3 shadow-sm" [class.card-selected]="selected" [class.document-card]="selectable">
   <div class="row no-gutters">
     <div class="col-md-2 d-none d-lg-block doc-img-background rounded-left" [class.doc-img-background-selected]="selected" (click)="this.toggleSelected.emit($event)">
       <img [src]="getThumbUrl()" class="card-img doc-img border-right rounded-left" [class.inverted]="getIsThumbInverted()">
@@ -43,28 +43,19 @@
                 <path fill-rule="evenodd" d="M12.146.146a.5.5 0 0 1 .708 0l3 3a.5.5 0 0 1 0 .708l-10 10a.5.5 0 0 1-.168.11l-5 2a.5.5 0 0 1-.65-.65l2-5a.5.5 0 0 1 .11-.168l10-10zM11.207 2.5L13.5 4.793 14.793 3.5 12.5 1.207 11.207 2.5zm1.586 3L10.5 3.207 4 9.707V10h.5a.5.5 0 0 1 .5.5v.5h.5a.5.5 0 0 1 .5.5v.5h.293l6.5-6.5zm-9.761 5.175l-.106.106-1.528 3.821 3.821-1.528.106-.106A.5.5 0 0 1 5 12.5V12h-.5a.5.5 0 0 1-.5-.5V11h-.5a.5.5 0 0 1-.468-.325z"/>
               </svg>&nbsp;<span class="d-block d-md-inline" i18n>Edit</span>
             </a>
-            <a class="btn btn-sm btn-outline-secondary" [href]="previewUrl" title="Click to view in browser" i18n-title
-            [ngbPopover]="previewContent" [popoverTitle]="document.title | documentTitle"
-            autoClose="true" popoverClass="shadow" (mouseenter)="mouseEnterPreview()" (mouseleave)="mouseLeavePreview()" #popover="ngbPopover">
+            <a class="btn btn-sm btn-outline-secondary" [href]="getPreviewUrl()">
               <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-eye" viewBox="0 0 16 16">
                 <path d="M16 8s-3-5.5-8-5.5S0 8 0 8s3 5.5 8 5.5S16 8 16 8zM1.173 8a13.133 13.133 0 0 1 1.66-2.043C4.12 4.668 5.88 3.5 8 3.5c2.12 0 3.879 1.168 5.168 2.457A13.133 13.133 0 0 1 14.828 8c-.058.087-.122.183-.195.288-.335.48-.83 1.12-1.465 1.755C11.879 11.332 10.119 12.5 8 12.5c-2.12 0-3.879-1.168-5.168-2.457A13.134 13.134 0 0 1 1.172 8z"/>
                 <path d="M8 5.5a2.5 2.5 0 1 0 0 5 2.5 2.5 0 0 0 0-5zM4.5 8a3.5 3.5 0 1 1 7 0 3.5 3.5 0 0 1-7 0z"/>
               </svg>&nbsp;<span class="d-block d-md-inline" i18n>View</span>
             </a>
-            <ng-template #previewContent>
-              <ng-container *ngIf="getContentType() == 'application/pdf'">
-                <object [data]="previewUrl | safe" class="preview" width="100%"></object>
-              </ng-container>
-              <ng-container *ngIf="getContentType() == 'text/plain'">
-                  <object [data]="previewUrl | safe" type="text/plain" class="preview" width="100%"></object>
-              </ng-container>
-            </ng-template>
             <a class="btn btn-sm btn-outline-secondary" [href]="getDownloadUrl()">
               <svg width="1em" height="1em" viewBox="0 0 16 16" class="bi bi-download" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
                 <path fill-rule="evenodd" d="M.5 9.9a.5.5 0 0 1 .5.5v2.5a1 1 0 0 0 1 1h12a1 1 0 0 0 1-1v-2.5a.5.5 0 0 1 1 0v2.5a2 2 0 0 1-2 2H2a2 2 0 0 1-2-2v-2.5a.5.5 0 0 1 .5-.5z"/>
                 <path fill-rule="evenodd" d="M7.646 11.854a.5.5 0 0 0 .708 0l3-3a.5.5 0 0 0-.708-.708L8.5 10.293V1.5a.5.5 0 0 0-1 0v8.793L5.354 8.146a.5.5 0 1 0-.708.708l3 3z"/>
               </svg>&nbsp;<span class="d-block d-md-inline" i18n>Download</span>
             </a>
+
           </div>
 
           <div *ngIf="searchScore" class="d-flex align-items-center ml-md-auto mt-2 mt-md-0">
diff --git a/src-ui/src/app/components/document-list/document-card-large/document-card-large.component.ts b/src-ui/src/app/components/document-list/document-card-large/document-card-large.component.ts
index bf42c4235..ae68f5b60 100644
--- a/src-ui/src/app/components/document-list/document-card-large/document-card-large.component.ts
+++ b/src-ui/src/app/components/document-list/document-card-large/document-card-large.component.ts
@@ -1,15 +1,13 @@
-import { Component, EventEmitter, Input, OnInit, Output, ViewChild } from '@angular/core';
+import { Component, EventEmitter, Input, OnInit, Output } from '@angular/core';
 import { DomSanitizer } from '@angular/platform-browser';
 import { PaperlessDocument } from 'src/app/data/paperless-document';
-import { PaperlessDocumentMetadata } from 'src/app/data/paperless-document-metadata';
 import { DocumentService } from 'src/app/services/rest/document.service';
 import { SettingsService, SETTINGS_KEYS } from 'src/app/services/settings.service';
-import { NgbPopover } from '@ng-bootstrap/ng-bootstrap';
 
 @Component({
   selector: 'app-document-card-large',
   templateUrl: './document-card-large.component.html',
-  styleUrls: ['./document-card-large.component.scss', '../popover-preview/popover-preview.scss']
+  styleUrls: ['./document-card-large.component.scss']
 })
 export class DocumentCardLargeComponent implements OnInit {
 
@@ -43,13 +41,6 @@ export class DocumentCardLargeComponent implements OnInit {
   @Input()
   searchScore: number
 
-  @ViewChild('popover') popover: NgbPopover
-
-  mouseOnPreview = false
-  popoverHidden = true
-
-  metadata: PaperlessDocumentMetadata
-
   get searchScoreClass() {
     if (this.searchScore > 0.7) {
       return "success"
@@ -61,9 +52,6 @@ export class DocumentCardLargeComponent implements OnInit {
   }
 
   ngOnInit(): void {
-    this.documentService.getMetadata(this.document?.id).subscribe(result => {
-      this.metadata = result
-    })
   }
 
   getIsThumbInverted() {
@@ -91,36 +79,7 @@ export class DocumentCardLargeComponent implements OnInit {
     return this.documentService.getDownloadUrl(this.document.id)
   }
 
-  get previewUrl() {
+  getPreviewUrl() {
     return this.documentService.getPreviewUrl(this.document.id)
   }
-
-  getContentType() {
-    return this.metadata?.has_archive_version ? 'application/pdf' : this.metadata?.original_mime_type
-  }
-
-  mouseEnterPreview() {
-    this.mouseOnPreview = true
-    if (!this.popover.isOpen()) {
-      // we're going to open but hide to pre-load content during hover delay
-      this.popover.open()
-      this.popoverHidden = true
-      setTimeout(() => {
-        if (this.mouseOnPreview) {
-          // show popover
-          this.popoverHidden = false
-        } else {
-          this.popover.close()
-        }
-      }, 600);
-    }
-  }
-
-  mouseLeavePreview() {
-    this.mouseOnPreview = false
-  }
-
-  mouseLeaveCard() {
-    this.popover.close()
-  }
 }
diff --git a/src-ui/src/app/components/document-list/document-card-small/document-card-small.component.html b/src-ui/src/app/components/document-list/document-card-small/document-card-small.component.html
index 1dde0c9d4..862b0ad22 100644
--- a/src-ui/src/app/components/document-list/document-card-small/document-card-small.component.html
+++ b/src-ui/src/app/components/document-list/document-card-small/document-card-small.component.html
@@ -1,5 +1,5 @@
 <div class="col p-2 h-100">
-  <div class="card h-100 shadow-sm document-card" [class.card-selected]="selected" [class.popover-hidden]="popoverHidden" (mouseleave)="mouseLeaveCard()">
+  <div class="card h-100 shadow-sm document-card" [class.card-selected]="selected">
     <div class="border-bottom doc-img-container" [class.doc-img-background-selected]="selected" (click)="this.toggleSelected.emit($event)">
       <img class="card-img doc-img rounded-top" [class.inverted]="getIsThumbInverted()" [src]="getThumbUrl()">
 
@@ -37,22 +37,12 @@
               <path fill-rule="evenodd" d="M12.146.146a.5.5 0 0 1 .708 0l3 3a.5.5 0 0 1 0 .708l-10 10a.5.5 0 0 1-.168.11l-5 2a.5.5 0 0 1-.65-.65l2-5a.5.5 0 0 1 .11-.168l10-10zM11.207 2.5L13.5 4.793 14.793 3.5 12.5 1.207 11.207 2.5zm1.586 3L10.5 3.207 4 9.707V10h.5a.5.5 0 0 1 .5.5v.5h.5a.5.5 0 0 1 .5.5v.5h.293l6.5-6.5zm-9.761 5.175l-.106.106-1.528 3.821 3.821-1.528.106-.106A.5.5 0 0 1 5 12.5V12h-.5a.5.5 0 0 1-.5-.5V11h-.5a.5.5 0 0 1-.468-.325z"/>
             </svg>
           </a>
-          <a [href]="previewUrl" target="_blank" class="btn btn-sm btn-outline-secondary" title="Click to view in browser" i18n-title
-          [ngbPopover]="previewContent" [popoverTitle]="document.title | documentTitle"
-          autoClose="true" popoverClass="shadow" (mouseenter)="mouseEnterPreview()" (mouseleave)="mouseLeavePreview()" #popover="ngbPopover">
+          <a [href]="getPreviewUrl()" class="btn btn-sm btn-outline-secondary" title="View in browser" i18n-title>
             <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-eye" viewBox="0 0 16 16">
               <path d="M16 8s-3-5.5-8-5.5S0 8 0 8s3 5.5 8 5.5S16 8 16 8zM1.173 8a13.133 13.133 0 0 1 1.66-2.043C4.12 4.668 5.88 3.5 8 3.5c2.12 0 3.879 1.168 5.168 2.457A13.133 13.133 0 0 1 14.828 8c-.058.087-.122.183-.195.288-.335.48-.83 1.12-1.465 1.755C11.879 11.332 10.119 12.5 8 12.5c-2.12 0-3.879-1.168-5.168-2.457A13.134 13.134 0 0 1 1.172 8z"/>
               <path d="M8 5.5a2.5 2.5 0 1 0 0 5 2.5 2.5 0 0 0 0-5zM4.5 8a3.5 3.5 0 1 1 7 0 3.5 3.5 0 0 1-7 0z"/>
             </svg>
           </a>
-          <ng-template #previewContent>
-            <ng-container *ngIf="getContentType() == 'application/pdf'">
-              <object [data]="previewUrl | safe" class="preview" width="100%"></object>
-            </ng-container>
-            <ng-container *ngIf="getContentType() == 'text/plain'">
-                <object [data]="previewUrl | safe" type="text/plain" class="preview" width="100%"></object>
-            </ng-container>
-          </ng-template>
           <a [href]="getDownloadUrl()" class="btn btn-sm btn-outline-secondary" title="Download" (click)="$event.stopPropagation()" i18n-title>
             <svg width="1em" height="1em" viewBox="0 0 16 16" class="bi bi-download" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
               <path fill-rule="evenodd" d="M.5 9.9a.5.5 0 0 1 .5.5v2.5a1 1 0 0 0 1 1h12a1 1 0 0 0 1-1v-2.5a.5.5 0 0 1 1 0v2.5a2 2 0 0 1-2 2H2a2 2 0 0 1-2-2v-2.5a.5.5 0 0 1 .5-.5z"/>
diff --git a/src-ui/src/app/components/document-list/document-card-small/document-card-small.component.ts b/src-ui/src/app/components/document-list/document-card-small/document-card-small.component.ts
index 033abab27..95c01dcec 100644
--- a/src-ui/src/app/components/document-list/document-card-small/document-card-small.component.ts
+++ b/src-ui/src/app/components/document-list/document-card-small/document-card-small.component.ts
@@ -1,15 +1,13 @@
-import { Component, EventEmitter, Input, OnInit, Output, ViewChild } from '@angular/core';
+import { Component, EventEmitter, Input, OnInit, Output } from '@angular/core';
 import { map } from 'rxjs/operators';
 import { PaperlessDocument } from 'src/app/data/paperless-document';
-import { PaperlessDocumentMetadata } from 'src/app/data/paperless-document-metadata';
 import { DocumentService } from 'src/app/services/rest/document.service';
 import { SettingsService, SETTINGS_KEYS } from 'src/app/services/settings.service';
-import { NgbPopover } from '@ng-bootstrap/ng-bootstrap';
 
 @Component({
   selector: 'app-document-card-small',
   templateUrl: './document-card-small.component.html',
-  styleUrls: ['./document-card-small.component.scss', '../popover-preview/popover-preview.scss']
+  styleUrls: ['./document-card-small.component.scss']
 })
 export class DocumentCardSmallComponent implements OnInit {
 
@@ -17,7 +15,7 @@ export class DocumentCardSmallComponent implements OnInit {
 
   @Input()
   selected = false
-
+  
   @Output()
   toggleSelected = new EventEmitter()
 
@@ -32,17 +30,7 @@ export class DocumentCardSmallComponent implements OnInit {
 
   moreTags: number = null
 
-  @ViewChild('popover') popover: NgbPopover
-
-  mouseOnPreview = false
-  popoverHidden = true
-
-  metadata: PaperlessDocumentMetadata
-
   ngOnInit(): void {
-    this.documentService.getMetadata(this.document?.id).subscribe(result => {
-      this.metadata = result
-    })
   }
 
   getIsThumbInverted() {
@@ -57,7 +45,7 @@ export class DocumentCardSmallComponent implements OnInit {
     return this.documentService.getDownloadUrl(this.document.id)
   }
 
-  get previewUrl() {
+  getPreviewUrl() {
     return this.documentService.getPreviewUrl(this.document.id)
   }
 
@@ -74,32 +62,4 @@ export class DocumentCardSmallComponent implements OnInit {
     )
   }
 
-  getContentType() {
-    return this.metadata?.has_archive_version ? 'application/pdf' : this.metadata?.original_mime_type
-  }
-
-  mouseEnterPreview() {
-    this.mouseOnPreview = true
-    if (!this.popover.isOpen()) {
-      // we're going to open but hide to pre-load content during hover delay
-      this.popover.open()
-      this.popoverHidden = true
-      setTimeout(() => {
-        if (this.mouseOnPreview) {
-          // show popover
-          this.popoverHidden = false
-        } else {
-          this.popover.close()
-        }
-      }, 600);
-    }
-  }
-
-  mouseLeavePreview() {
-    this.mouseOnPreview = false
-  }
-
-  mouseLeaveCard() {
-    this.popover.close()
-  }
 }
diff --git a/src-ui/src/app/components/document-list/document-list.component.html b/src-ui/src/app/components/document-list/document-list.component.html
index e289c607e..75a9804a2 100644
--- a/src-ui/src/app/components/document-list/document-list.component.html
+++ b/src-ui/src/app/components/document-list/document-list.component.html
@@ -170,5 +170,5 @@
 </table>
 
 <div class="m-n2 row row-cols-paperless-cards" *ngIf="displayMode == 'smallCards'">
-  <app-document-card-small [selected]="list.isSelected(d)" (toggleSelected)="toggleSelected(d, $event)" [document]="d" *ngFor="let d of list.documents; trackBy: trackByDocumentId" (clickTag)="clickTag($event)" (clickCorrespondent)="clickCorrespondent($event)"></app-document-card-small>
+  <app-document-card-small [selected]="list.isSelected(d)" (toggleSelected)="toggleSelected(d, $event)"  [document]="d" *ngFor="let d of list.documents; trackBy: trackByDocumentId" (clickTag)="clickTag($event)" (clickCorrespondent)="clickCorrespondent($event)"></app-document-card-small>
 </div>
diff --git a/src-ui/src/app/components/document-list/popover-preview/popover-preview.scss b/src-ui/src/app/components/document-list/popover-preview/popover-preview.scss
deleted file mode 100644
index d232930c2..000000000
--- a/src-ui/src/app/components/document-list/popover-preview/popover-preview.scss
+++ /dev/null
@@ -1,22 +0,0 @@
-::ng-deep .popover {
-  max-width: 40rem;
-
-  .preview {
-    min-width: 30rem;
-    min-height: 18rem;
-    max-height: 35rem;
-    overflow-y: scroll;
-  }
-
-  .spinner-border {
-    position: absolute;
-    top: 4rem;
-    left: calc(50% - 0.5rem);
-    z-index: 0;
-  }
-}
-
- ::ng-deep .popover-hidden .popover {
-  opacity: 0;
-  pointer-events: none;
-}
diff --git a/src-ui/src/app/components/manage/settings/settings.component.html b/src-ui/src/app/components/manage/settings/settings.component.html
index 73b3b2b0d..231c4e82f 100644
--- a/src-ui/src/app/components/manage/settings/settings.component.html
+++ b/src-ui/src/app/components/manage/settings/settings.component.html
@@ -78,6 +78,17 @@
           </div>
         </div>
 
+        <div class="form-row form-group">
+          <div class="col-md-3 col-form-label">
+            <span i18n>Document editor</span>
+          </div>
+          <div class="col">
+
+            <app-input-check i18n-title title="Use PDF viewer provided by the browser" i18n-hint hint="This is usually faster for displaying large PDF documents, but it might not work on some browsers." formControlName="useNativePdfViewer"></app-input-check>
+
+          </div>
+        </div>
+
         <div class="form-row form-group">
           <div class="col-md-3 col-form-label">
             <span i18n>Dark mode</span>
@@ -100,11 +111,11 @@
 
       </ng-template>
     </li>
-
+    
     <li [ngbNavItem]="2">
       <a ngbNavLink i18n>Notifications</a>
       <ng-template ngbNavContent>
-
+        
         <h4 i18n>Document processing</h4>
 
         <div class="form-row form-group">
diff --git a/src-ui/src/app/components/manage/settings/settings.component.ts b/src-ui/src/app/components/manage/settings/settings.component.ts
index 0933c2714..ab71b1028 100644
--- a/src-ui/src/app/components/manage/settings/settings.component.ts
+++ b/src-ui/src/app/components/manage/settings/settings.component.ts
@@ -22,6 +22,7 @@ export class SettingsComponent implements OnInit {
     'darkModeUseSystem': new FormControl(this.settings.get(SETTINGS_KEYS.DARK_MODE_USE_SYSTEM)),
     'darkModeEnabled': new FormControl(this.settings.get(SETTINGS_KEYS.DARK_MODE_ENABLED)),
     'darkModeInvertThumbs': new FormControl(this.settings.get(SETTINGS_KEYS.DARK_MODE_THUMB_INVERTED)),
+    'useNativePdfViewer': new FormControl(this.settings.get(SETTINGS_KEYS.USE_NATIVE_PDF_VIEWER)),
     'savedViews': this.savedViewGroup,
     'displayLanguage': new FormControl(this.settings.getLanguage()),
     'dateLocale': new FormControl(this.settings.get(SETTINGS_KEYS.DATE_LOCALE)),
@@ -75,6 +76,7 @@ export class SettingsComponent implements OnInit {
     this.settings.set(SETTINGS_KEYS.DARK_MODE_USE_SYSTEM, this.settingsForm.value.darkModeUseSystem)
     this.settings.set(SETTINGS_KEYS.DARK_MODE_ENABLED, (this.settingsForm.value.darkModeEnabled == true).toString())
     this.settings.set(SETTINGS_KEYS.DARK_MODE_THUMB_INVERTED, (this.settingsForm.value.darkModeInvertThumbs == true).toString())
+    this.settings.set(SETTINGS_KEYS.USE_NATIVE_PDF_VIEWER, this.settingsForm.value.useNativePdfViewer)
     this.settings.set(SETTINGS_KEYS.DATE_LOCALE, this.settingsForm.value.dateLocale)
     this.settings.set(SETTINGS_KEYS.DATE_FORMAT, this.settingsForm.value.dateFormat)
     this.settings.set(SETTINGS_KEYS.NOTIFICATIONS_CONSUMER_NEW_DOCUMENT, this.settingsForm.value.notificationsConsumerNewDocument)
diff --git a/src-ui/src/app/services/settings.service.ts b/src-ui/src/app/services/settings.service.ts
index 01035c2bf..8810cd653 100644
--- a/src-ui/src/app/services/settings.service.ts
+++ b/src-ui/src/app/services/settings.service.ts
@@ -27,6 +27,7 @@ export const SETTINGS_KEYS = {
   DARK_MODE_USE_SYSTEM: 'general-settings:dark-mode:use-system',
   DARK_MODE_ENABLED: 'general-settings:dark-mode:enabled',
   DARK_MODE_THUMB_INVERTED: 'general-settings:dark-mode:thumb-inverted',
+  USE_NATIVE_PDF_VIEWER: 'general-settings:document-details:native-pdf-viewer',
   DATE_LOCALE: 'general-settings:date-display:date-locale',
   DATE_FORMAT: 'general-settings:date-display:date-format',
   NOTIFICATIONS_CONSUMER_NEW_DOCUMENT: 'general-settings:notifications:consumer-new-documents',
@@ -42,6 +43,7 @@ const SETTINGS: PaperlessSettings[] = [
   {key: SETTINGS_KEYS.DARK_MODE_USE_SYSTEM, type: "boolean", default: true},
   {key: SETTINGS_KEYS.DARK_MODE_ENABLED, type: "boolean", default: false},
   {key: SETTINGS_KEYS.DARK_MODE_THUMB_INVERTED, type: "boolean", default: true},
+  {key: SETTINGS_KEYS.USE_NATIVE_PDF_VIEWER, type: "boolean", default: false},
   {key: SETTINGS_KEYS.DATE_LOCALE, type: "string", default: ""},
   {key: SETTINGS_KEYS.DATE_FORMAT, type: "string", default: "mediumDate"},
   {key: SETTINGS_KEYS.NOTIFICATIONS_CONSUMER_NEW_DOCUMENT, type: "boolean", default: true},
diff --git a/src-ui/src/theme_dark.scss b/src-ui/src/theme_dark.scss
index f3336cc1a..0be25026b 100644
--- a/src-ui/src/theme_dark.scss
+++ b/src-ui/src/theme_dark.scss
@@ -1,7 +1,6 @@
 $primary-dark-mode: #45973a;
 $danger-dark-mode: #b71631;
 $bg-dark-mode: #161618;
-$bg-dark-mode-accent: #21262d;
 $bg-light-dark-mode: #1c1c1f;
 $text-color-dark-mode: #abb2bf;
 $text-color-dark-mode-accent: lighten($text-color-dark-mode, 10%);
@@ -385,28 +384,6 @@ $border-color-dark-mode: #47494f;
     background-color: darken($primary-dark-mode, 5%) !important;
   }
 
-  .popover {
-    .popover-header,
-    .popover-body {
-      background-color: $bg-dark-mode-accent;
-      border-color: $border-color-dark-mode;
-    }
-  }
-
-  $placements: 'top', 'right', 'bottom', 'left';
-
-  @each $placement in $placements {
-    .bs-popover-#{$placement} > .arrow::after,
-    .bs-popover-auto[x-placement^=#{$placement}] > .arrow::after {
-      border-#{$placement}-color: $bg-dark-mode-accent;
-    }
-  }
-
-  .bs-popover-bottom .popover-header::before,
-  .bs-popover-auto[x-placement^=bottom] .popover-header::before {
-    border-bottom-color: $bg-dark-mode-accent;
-  }
-
   .ngb-dp-header,
   .ngb-dp-weekdays,
   .ngb-dp-month {