feat(viewer): Add pagination metadata and thumbnail offset rendering for viewer thumbnails

ts_web/elements/viewer.ts

@@ -11,8 +11,9 @@ import {
   type TemplateResult,
 } from "@design.estate/dees-element";
 import { demoFunc } from "./viewer.demo.js";
-import { DeDocument } from "./document.js";
+import { DeDocument, type IPagePaginationInfo } from "./document.js";
 import "./page.js"; // Import DePage for thumbnail rendering
+import "./contentinvoice.js"; // Import DeContentInvoice for thumbnail content
 
 import "@design.estate/dees-catalog";
 
@@ -105,6 +106,9 @@ export class DeDocumentViewer extends DeesElement {
   @state()
   accessor thumbnailPages: number[] = [];
 
+  @state()
+  accessor paginationInfo: IPagePaginationInfo[] = [];
+
   // Zoom animation
   private zoomAnimationId: number | null = null;
 
@@ -667,8 +671,10 @@ export class DeDocumentViewer extends DeesElement {
       <div class="${sidebarClasses}" style="width: ${this.sidebarWidth}px;">
         <div class="sidebar__header">Pages</div>
         <div class="sidebar__thumbnails">
-          ${this.thumbnailPages.map(
-            (_, i) => html`
+          ${this.thumbnailPages.map((_, i) => {
+            const pageInfo = this.paginationInfo[i];
+
+            return html`
               <div
                 class="thumbnail ${currentPage === i + 1 ? "thumbnail--active" : ""}"
                 @click=${() => this.scrollToPage(i + 1)}
@@ -689,13 +695,20 @@ export class DeDocumentViewer extends DeesElement {
                       .documentSettings=${this.documentSettings}
                       .pageNumber=${i + 1}
                       .pageTotalNumber=${this.thumbnailPages.length}
-                    ></dedocument-page>
+                    >${pageInfo ? html`
+                      <dedocument-contentinvoice
+                        .letterData=${this.letterData as unknown as plugins.tsclass.finance.TInvoice}
+                        .documentSettings=${this.documentSettings}
+                        .renderStartOffset=${pageInfo.startOffset}
+                        .renderContentLength=${pageInfo.contentLength}
+                      ></dedocument-contentinvoice>
+                    ` : null}</dedocument-page>
                   </div>
                 </div>
                 <span class="thumbnail__label">${i + 1}</span>
               </div>
-            `
-          )}
+            `;
+          })}
         </div>
         <div
           class="sidebar__resize-handle"
@@ -1216,6 +1229,15 @@ export class DeDocumentViewer extends DeesElement {
       setTimeout(() => this.updateDisplayZoom(), 200);
     }
 
+    // Listen for pagination-complete event from DeDocument
+    this.addEventListener('pagination-complete', (e: CustomEvent) => {
+      this.paginationInfo = e.detail.paginationInfo;
+      const pageCount = e.detail.pageCount;
+      if (pageCount !== this.thumbnailPages.length) {
+        this.thumbnailPages = Array.from({ length: pageCount }, (_, i) => i);
+      }
+    });
+
     // Handle viewport resize and scroll
     const viewport = this.shadowRoot?.querySelector(".viewport");
     if (viewport) {