From ee92ab1136918a14902e412fc3472af0192b36a1 Mon Sep 17 00:00:00 2001
From: Michael Shamoon <4887959+nikonratm@users.noreply.github.com>
Date: Wed, 24 Feb 2021 13:02:26 -0800
Subject: [PATCH] Support large cards

---
 .../document-card-large.component.html        | 17 +++++--
 .../document-card-large.component.scss        | 23 ++++++++++
 .../document-card-large.component.ts          | 45 ++++++++++++++++++-
 3 files changed, 80 insertions(+), 5 deletions(-)

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 a47f13653..fd68996fa 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">
+<div class="card mb-3 shadow-sm" [class.card-selected]="selected" [class.document-card]="selectable" [class.popover-hidden]="popoverHidden" (mouseleave)="mouseLeaveCard()">
   <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">
@@ -43,19 +43,30 @@
                 <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]="getPreviewUrl()">
+            <a class="btn btn-sm btn-outline-secondary" [href]="previewUrl" title="Hover to preview, click to view in browser" i18n-title
+            [ngbPopover]="previewContent" [popoverTitle]="document.title | documentTitle"
+            autoClose="true" popoverClass="shadow" (mouseenter)="mouseEnterPreview()" (mouseleave)="mouseLeavePreview()" #popover="ngbPopover">
               <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'">
+                  <div class="preview">
+                    <object [data]="previewUrl | safe" class="preview" width="100%"></object>
+                  </div>
+              </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.scss b/src-ui/src/app/components/document-list/document-card-large/document-card-large.component.scss
index c49de93b5..cf4e876d4 100644
--- a/src-ui/src/app/components/document-list/document-card-large/document-card-large.component.scss
+++ b/src-ui/src/app/components/document-list/document-card-large/document-card-large.component.scss
@@ -37,3 +37,26 @@
 .doc-img-background-selected {
   background-color: $primaryFaded;
 }
+
+::ng-deep .popover {
+  max-width: 40rem;
+
+  .preview {
+    min-width: 25rem;
+    min-height: 15rem;
+    max-height: 35rem;
+    overflow-y: scroll;
+  }
+
+  .spinner-border {
+    position: absolute;
+    top: 4rem;
+    left: calc(50% - 0.5rem);
+    z-index: 0;
+  }
+}
+
+.popover-hidden ::ng-deep .popover {
+  opacity: 0;
+  pointer-events: none;
+}
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 f8bb9f518..d5168476b 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
@@ -1,7 +1,9 @@
-import { Component, EventEmitter, Input, OnInit, Output } from '@angular/core';
+import { Component, EventEmitter, Input, OnInit, Output, ViewChild } 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 { NgbPopover } from '@ng-bootstrap/ng-bootstrap';
 
 @Component({
   selector: 'app-document-card-large',
@@ -40,6 +42,13 @@ 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"
@@ -51,6 +60,9 @@ export class DocumentCardLargeComponent implements OnInit {
   }
 
   ngOnInit(): void {
+    this.documentService.getMetadata(this.document?.id).subscribe(result => {
+      this.metadata = result
+    })
   }
 
   getDetailsAsString() {
@@ -74,7 +86,36 @@ export class DocumentCardLargeComponent implements OnInit {
     return this.documentService.getDownloadUrl(this.document.id)
   }
 
-  getPreviewUrl() {
+  get previewUrl() {
     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()
+  }
 }