Switch file preview strip in gallery for static rendered entries

Signed-off-by: trivernis <trivernis@protonmail.com>

mediarepo-ui/src/app/components/core/repositories-tab/repositories-tab.component.ts

@@ -130,7 +130,7 @@ export class RepositoriesTabComponent implements OnInit, AfterViewInit {
             "Opening repository...");
         let dialog = this.dialog.open(BusyDialogComponent, {
             data: {
-                title: `Opening repository ${repository.name}`,
+                title: `Opening repository '${repository.name}'`,
                 message: dialogMessage,
                 allowCancel: true,
             }, disableClose: true,

mediarepo-ui/src/app/components/shared/file/file-multiview/file-gallery/file-gallery.component.html

@@ -1,4 +1,8 @@
-<div #inner (keyDownEvent)="handleKeydownEvent($event)" appInputReceiver class="gallery-container">
+<div #inner
+     (keyDownEvent)="handleKeydownEvent($event)"
+     (window:resize)="this.onResize()"
+     appInputReceiver
+     class="gallery-container">
     <button (click)="this.appClose.emit(this)" class="close-button" mat-icon-button>
         <ng-icon name="mat-close"></ng-icon>
     </button>
@@ -15,14 +19,12 @@
     </div>
     <div
         class="file-scroll-view">
-        <mat-divider></mat-divider>
+        <div #previewStripContainer class="file-preview-strip-container">
-        <cdk-virtual-scroll-viewport #virtualScroll class="file-scroll-viewport" itemSize="260" maxBufferPx="3000"
+            <div *ngFor="let entry of this.previewedEntries; trackBy: trackByFileId" class="file-item">
-                                     minBufferPx="1000" orientation="horizontal">
+                <app-file-card (clickEvent)="onEntrySelect($event.entry)" *ngIf="entry"
-            <div *cdkVirtualFor="let entry of entries; trackBy: trackByFileId" class="file-item">
-                <app-file-card (clickEvent)="onEntrySelect($event.entry)"
                                [entry]="entry" [fileChanged]="this.fileChanged"></app-file-card>
             </div>
-        </cdk-virtual-scroll-viewport>
+        </div>
     </div>
 </div>
 <app-file-context-menu #fileContextMenu

mediarepo-ui/src/app/components/shared/file/file-multiview/file-gallery/file-gallery.component.scss

@@ -1,3 +1,5 @@
+@import "src/colors";
+
 .file-scroll-viewport {
     width: 100%;
     height: 100%;
@@ -17,16 +19,6 @@
     overflow-y: hidden;
 }
 
-app-file-gallery-entry, .file-item {
-    width: 250px;
-    height: calc(100% - 10px);
-    padding: 5px;
-}
-
-app-file-gallery-entry {
-    display: block;
-}
-
 .file-full-view {
     position: relative;
     width: 100%;
@@ -43,15 +35,33 @@ app-file-gallery-entry {
     transition-duration: 1s;
     height: 20%;
 
-    .file-scroll-viewport {
-        height: calc(100% - 4px);
-    }
-
     mat-divider {
         height: 2px;
     }
 }
 
+.file-preview-strip-container {
+    display: flex;
+    width: 100%;
+    height: 100%;
+    border-top: 2px solid $background-darker-05;
+
+    .file-item {
+        width: 100%;
+        overflow: hidden;
+        height: calc(100%);
+
+        ::ng-deep mat-card {
+            border-left: 2px solid $background;
+            border-radius: 0;
+        }
+    }
+
+    .file-item:first-child {
+        border-left: none;
+    }
+}
+
 app-content-viewer {
     height: 100%;
     width: 100%;

mediarepo-ui/src/app/components/shared/file/file-multiview/file-gallery/file-gallery.component.ts

@@ -1,5 +1,8 @@
 import {
+    AfterViewChecked,
     AfterViewInit,
+    ChangeDetectionStrategy,
+    ChangeDetectorRef,
     Component,
     ElementRef,
     EventEmitter,
@@ -14,7 +17,6 @@ import {File} from "../../../../../../api/models/File";
 import {FileService} from "../../../../../services/file/file.service";
 import {SafeResourceUrl} from "@angular/platform-browser";
 import {Selectable} from "../../../../../models/Selectable";
-import {CdkVirtualScrollViewport} from "@angular/cdk/scrolling";
 import {TabService} from "../../../../../services/tab/tab.service";
 import {Key} from "w3c-keys";
 import {BehaviorSubject} from "rxjs";
@@ -22,9 +24,10 @@ import {BehaviorSubject} from "rxjs";
 @Component({
     selector: "app-file-gallery",
     templateUrl: "./file-gallery.component.html",
-    styleUrls: ["./file-gallery.component.scss"]
+    styleUrls: ["./file-gallery.component.scss"],
+    changeDetection: ChangeDetectionStrategy.OnPush
 })
-export class FileGalleryComponent implements OnChanges, OnInit, AfterViewInit {
+export class FileGalleryComponent implements OnChanges, OnInit, AfterViewInit, AfterViewChecked {
 
     @Input() files: File[] = [];
     @Input() preselectedFile: File | undefined;
@@ -34,9 +37,8 @@ export class FileGalleryComponent implements OnChanges, OnInit, AfterViewInit {
     @Output() fileDelete = new EventEmitter<File>();
     @Output() fileDeleted = new EventEmitter<File[]>();
 
-    @ViewChild("virtualScroll") virtualScroll!: CdkVirtualScrollViewport;
-
     @ViewChild("inner") inner!: ElementRef<HTMLDivElement>;
+    @ViewChild("previewStripContainer") stripContainer!: ElementRef<HTMLDivElement>;
 
     public entries: Selectable<File>[] = [];
     public selectedFile: Selectable<File> | undefined;
@@ -45,15 +47,16 @@ export class FileGalleryComponent implements OnChanges, OnInit, AfterViewInit {
 
     public imageViewHeightPercent = 80;
     public previewStripVisible = true;
+    public previewedEntries: (Selectable<File> | undefined)[] = [];
 
-    private scrollTimeout: number | undefined;
+    private previewStripCount = 5;
     private escapeCount = 0;
 
     constructor(
+        private changeDetector: ChangeDetectorRef,
         private tabService: TabService,
         private fileService: FileService
     ) {
-        tabService.selectedTab.subscribe(() => this.adjustElementSizes());
     }
 
     async ngOnInit(): Promise<void> {
@@ -61,6 +64,8 @@ export class FileGalleryComponent implements OnChanges, OnInit, AfterViewInit {
             this.selectedFile.data) < 0) {
             await this.onEntrySelect(
                 this.getPreselectedEntry() ?? this.entries[0]);
+        } else {
+            this.buildPreviewedFiles();
         }
     }
 
@@ -84,6 +89,10 @@ export class FileGalleryComponent implements OnChanges, OnInit, AfterViewInit {
         }
     }
 
+    public ngAfterViewChecked(): void {
+        this.calculatePreviewCount();
+    }
+
     /**
      * Called when a new entry is selected
      * @param {Selectable<File>} entry
@@ -96,15 +105,8 @@ export class FileGalleryComponent implements OnChanges, OnInit, AfterViewInit {
             this.selectedFile = entry;
             await this.loadSelectedFile();
 
-            if (this.virtualScroll) {
-                clearTimeout(this.scrollTimeout);
-                this.scrollTimeout = setTimeout(
-                    () => this.scrollToSelection(),
-                    0
-                );  // we need to make sure the viewport has rendered
-            }
-
             this.fileSelect.emit(this.selectedFile.data);
+            this.buildPreviewedFiles();
         }
     }
 
@@ -151,13 +153,6 @@ export class FileGalleryComponent implements OnChanges, OnInit, AfterViewInit {
         }
     }
 
-    public adjustElementSizes(): void {
-        if (this.virtualScroll) {
-            this.virtualScroll.checkViewportSize();
-            this.scrollToSelection();
-        }
-    }
-
     public focus() {
         this.inner.nativeElement.focus();
     }
@@ -181,8 +176,8 @@ export class FileGalleryComponent implements OnChanges, OnInit, AfterViewInit {
         }
     }
 
-    public trackByFileId(index: number, item: Selectable<File>) {
+    public trackByFileId(index: number, item?: Selectable<File>) {
-        return item.data.id;
+        return item?.data.id;
     }
 
     public onFileStatusChange(): void {
@@ -199,23 +194,24 @@ export class FileGalleryComponent implements OnChanges, OnInit, AfterViewInit {
         }
     }
 
-    private scrollToSelection(): void {
+    public calculatePreviewCount() {
-        if (this.selectedFile) {
+        if (this.stripContainer && this.stripContainer.nativeElement) {
-            const selectedIndex = this.entries.indexOf(this.selectedFile);
+            const width = Math.abs(this.stripContainer.nativeElement.clientWidth);
-            const viewportSize = this.virtualScroll.getViewportSize();
+            const height = Math.abs(this.stripContainer.nativeElement.clientHeight);
-            const indexAdjustment = (viewportSize / 260) / 2; // adjustment to have the selected item centered
+
-            this.virtualScroll.scrollToIndex(
+            const count = Math.floor(Math.floor(width / height) / 2) * 2 + 1;
-                Math.max(selectedIndex - indexAdjustment, 0), "smooth");
+
-
+            if (count != this.previewStripCount) {
-            if (selectedIndex > indexAdjustment) {
+                this.previewStripCount = count;
-                this.virtualScroll.scrollToOffset(
+                this.buildPreviewedFiles();
-                    this.virtualScroll.measureScrollOffset("left") + 130,
-                    "smooth"
-                );
             }
         }
     }
 
+    public onResize(): void {
+        this.changeDetector.markForCheck();
+    }
+
     private getPreselectedEntry(): Selectable<File> | undefined {
         if (this.preselectedFile) {
             const entry = this.entries.find(
@@ -235,4 +231,26 @@ export class FileGalleryComponent implements OnChanges, OnInit, AfterViewInit {
             setTimeout(() => this.escapeCount--, 500);
         }
     }
+
+    private buildPreviewedFiles() {
+        if (!this.selectedFile) {
+            if (this.entries) {
+                this.onEntrySelect(this.entries[0]).catch(console.error);
+            }
+            return;
+        }
+        const selectedIndex = this.entries.indexOf(this.selectedFile!);
+        const previewCountLR = Math.floor(this.previewStripCount / 2);
+        const previewedEntries = [];
+
+        for (let i = selectedIndex - previewCountLR; i <= selectedIndex + previewCountLR; i++) {
+            if (i >= 0 && i < this.entries.length) {
+                previewedEntries.push(this.entries[i]);
+            } else {
+                previewedEntries.push(undefined);
+            }
+        }
+        this.previewedEntries = previewedEntries;
+        this.changeDetector.markForCheck();
+    }
 }

mediarepo-ui/src/app/components/shared/file/file-multiview/file-grid/file-grid.component.html

@@ -1,7 +1,7 @@
 <div #inner
      (keyDownEvent)="handleKeydownEvent($event)"
      (keyUpEvent)="handleKeyupEvent($event)"
-     (window:resize)="this.calculateColumnCount()"
+     (window:resize)="this.onResize()"
      appInputReceiver
      class="file-grid-inner">
     <cdk-virtual-scroll-viewport #virtualScrollGrid class="file-scroll" itemSize="260" maxBufferPx="2000"

mediarepo-ui/src/app/components/shared/file/file-multiview/file-grid/file-grid.component.scss

@@ -4,11 +4,14 @@ app-file-card {
     height: 250px;
     width: 100%;
     padding: 5px;
+    display: block;
+    overflow: hidden;
 }
 
 .file-scroll {
     height: 100%;
     width: 100%;
+    overflow-x: hidden;
 }
 
 .file-grid-inner {
@@ -23,4 +26,5 @@ app-file-card {
     display: flex;
     flex-direction: row;
     width: 100%;
+    overflow-x: hidden;
 }

mediarepo-ui/src/app/components/shared/file/file-multiview/file-grid/file-grid.component.ts

@@ -213,6 +213,10 @@ export class FileGridComponent implements OnChanges, OnInit, AfterViewInit, Afte
         }
     }
 
+    public onResize(): void {
+        this.changeDetector.markForCheck();
+    }
+
     private setPartitionedGridEntries() {
         this.partitionedGridEntries = [];
         let scrollToIndex = -1;