From ca90d1c4228a097b0a2c33a76457ceb7d20bc97e Mon Sep 17 00:00:00 2001
From: Hlars <larshjordt@me.com>
Date: Tue, 6 May 2025 21:54:46 +0200
Subject: [PATCH] multi color comment support

---
 .../comment-box/comment-box.component.html    |  8 ++++-
 .../comment-box/comment-box.component.scss    |  4 ++-
 src/app/comment-box/comment-box.component.ts  | 36 ++++++++++++++-----
 3 files changed, 37 insertions(+), 11 deletions(-)

diff --git a/src/app/comment-box/comment-box.component.html b/src/app/comment-box/comment-box.component.html
index 2db2f45..60d6755 100644
--- a/src/app/comment-box/comment-box.component.html
+++ b/src/app/comment-box/comment-box.component.html
@@ -29,10 +29,16 @@
 ]" (overlayOutsideClick)="clickOutsideMenu($event)">
     <div class="mat-mdc-menu-panel" #menuContent>
         <div class="mat-mdc-menu-content">
+            @if (filteredSelectionList.length > 0) {
             @for (item of filteredSelectionList; track item; let index_ = $index) {
             <div class="mat-mdc-menu-item mat-focus-indicator"
                 [class.mat-mdc-menu-item-highlighted]="index_ === selectedDropdownItemIndex"
-                [class.active]="index_ === selectedDropdownItemIndex" (click)="clickMention(index_)">{{item}}
+                [class.active]="index_ === selectedDropdownItemIndex" (click)="clickMention(index_)">{{item.title}}
+            </div>
+            }
+            } @else {
+            <div class="mat-mdc-menu-item mat-focus-indicator">
+                Keine Übereinstimmung...
             </div>
             }
         </div>
diff --git a/src/app/comment-box/comment-box.component.scss b/src/app/comment-box/comment-box.component.scss
index da1f591..76950b4 100644
--- a/src/app/comment-box/comment-box.component.scss
+++ b/src/app/comment-box/comment-box.component.scss
@@ -8,11 +8,13 @@
     }
 
     .mention {
+        --mention-color: blue;
+
         display: inline-block;
         position: relative;
 
         &:not(.ignore) {
-            color: blue;
+            color: var(--mention-color);
             background-color: transparent;
             font-style: italic;
             font-size: 0.8rem;
diff --git a/src/app/comment-box/comment-box.component.ts b/src/app/comment-box/comment-box.component.ts
index e2fe1a2..755dc72 100644
--- a/src/app/comment-box/comment-box.component.ts
+++ b/src/app/comment-box/comment-box.component.ts
@@ -9,6 +9,11 @@ import { OverlayModule } from '@angular/cdk/overlay';
 import { DOWN_ARROW, ENTER, ESCAPE, TAB, UP_ARROW } from '@angular/cdk/keycodes';
 import { Cursor, MentionHandleResult } from './cursor';
 
+export interface MentionItem {
+  title: string,
+  color?: string,
+}
+
 @Component({
   selector: 'app-comment-box',
   imports: [MatMenuModule, OverlayModule],
@@ -155,7 +160,7 @@ export class CommentBoxComponent implements MatFormFieldControl<string>, Control
   @ViewChild('commentInput') _commentInputRef!: ElementRef;
   @ViewChild('menuContent') _menuContent!: ElementRef;
 
-  @Input() mentionListItems: string[] = [];
+  @Input() mentionListItems: MentionItem[] = [];
 
   selectedDropdownItemIndex = 0;
   menuOffsetX = 0;
@@ -163,7 +168,7 @@ export class CommentBoxComponent implements MatFormFieldControl<string>, Control
   menuOpenAboveYShift = 0;
 
   isOpen = false;
-  filteredSelectionList: string[] = [];
+  filteredSelectionList: MentionItem[] = [];
 
   handleKeyEvent(event: KeyboardEvent) {
     if (this.isOpen) {
@@ -180,9 +185,16 @@ export class CommentBoxComponent implements MatFormFieldControl<string>, Control
           this.removeFocusedMention(event.target as HTMLInputElement);
           event.preventDefault();
           break;
-        case ENTER || TAB:
-          this.addMention(event.target as HTMLInputElement);
-          this.handleTextChanged(true, 1);
+        case ENTER:
+        case TAB:
+          if (this.filteredSelectionList[this.selectedDropdownItemIndex]) {
+            this.addMention(event.target as HTMLInputElement);
+            this.handleTextChanged(true, 1);
+          } else {
+            this.removeFocusedMention(event.target as HTMLInputElement);
+            this.isOpen = false;
+          }
+
           event.preventDefault();
           break;
       }
@@ -230,7 +242,7 @@ export class CommentBoxComponent implements MatFormFieldControl<string>, Control
 
       // filter menu entries
       let searchQuery = focusedMentionElement.textContent?.substring(1);
-      this.filteredSelectionList = this.mentionListItems.filter((element) => element.toLocaleLowerCase().includes(searchQuery?.toLocaleLowerCase() ?? ""))
+      this.filteredSelectionList = this.mentionListItems.filter((element) => element.title.toLocaleLowerCase().includes(searchQuery?.toLocaleLowerCase() ?? ""))
       if (this.selectedDropdownItemIndex > this.filteredSelectionList.length - 1)
         this.selectedDropdownItemIndex = this.filteredSelectionList.length - 1;
 
@@ -245,11 +257,12 @@ export class CommentBoxComponent implements MatFormFieldControl<string>, Control
 
   handleMentionElements(innerHtml: string): MentionHandleResult {
     let newOffset = null;
-    innerHtml = innerHtml.replace(/(?<!(<div class[ \t]*=[ \t]*"[^"]*mention[^"]*">|\w))@\w*/g, (match) => {
+    // innerHtml = innerHtml.replace(/(?<!(<div class[ \t]*=[ \t]*"[^"]*mention[^"]*">|\w))@\w*/g, (match) => {
+    innerHtml = innerHtml.replace(/(?<!(<div class[ \t]*=[ \t]*"[^"]*mention[^"]*"[ \t]*(style[ \t]*=[ \t]*".*[ \t]*")?>|\w))@\w*/g, (match) => {
       newOffset = match.length;
       return `<div class="${Cursor.focusedClassName} ignore mention">${match}</div>`;
     });
-
+    console.log(innerHtml)
     // remove old focus classes if match was found
     if (newOffset) {
       innerHtml = innerHtml.replaceAll(/class="focused"/g, "");
@@ -303,14 +316,19 @@ export class CommentBoxComponent implements MatFormFieldControl<string>, Control
   }
 
   addMention(element: HTMLElement) {
+    const mentionItem = this.filteredSelectionList[this.selectedDropdownItemIndex];
+
     let focusedMention = element.querySelector(`.mention.${Cursor.focusedClassName}`);
     let focusedElements = element.querySelectorAll(Cursor.focusedClassName);
     if (focusedMention) {
       // set text and remove ignore to style mention
-      focusedMention.textContent = `@${this.filteredSelectionList[this.selectedDropdownItemIndex]}`;
+      focusedMention.textContent = `@${mentionItem.title}`;
       focusedMention.classList.remove(Cursor.focusedClassName);
       focusedMention.classList.remove("ignore")
 
+      if (mentionItem.color)
+        focusedMention.setAttribute('style', `--mention-color:${mentionItem.color}`)
+
       // remove all old focused classes
       for (let node of focusedElements) {
         node.classList.remove(Cursor.focusedClassName);