From 4605fd7ee482058a78dbd8476434fad319c6aa61 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EC=BB=A8=ED=8A=B8=EB=A1=A4DELTA?= <controld3785@gmail.com>
Date: Fri, 17 Apr 2026 12:42:56 +0900
Subject: [PATCH] Add Header Menu Brand Text Hidden Mode

---
 src/app/features/header-menu/header-menu.html |   6 +-
 src/app/features/header-menu/header-menu.scss |  10 +-
 src/app/features/header-menu/header-menu.ts   | 106 +++++++++++++++++-
 3 files changed, 115 insertions(+), 7 deletions(-)

diff --git a/src/app/features/header-menu/header-menu.html b/src/app/features/header-menu/header-menu.html
index bdf1a23..6c86d28 100644
--- a/src/app/features/header-menu/header-menu.html
+++ b/src/app/features/header-menu/header-menu.html
@@ -1,7 +1,9 @@
 <div class="menu-left">
   <a class="brand" [routerLink]="['/']">
     <img [src]="settings.darkMode() ? '/logo.svg' : '/logo_inverted.svg'" alt="logo" height="20" width="59.52" />
-    <span><strong>ADOFAI Editor Forum</strong></span>
+    <span #brandText [class.hidden]="!hasExtraSpace()">
+      <strong>ADOFAI Editor Forum</strong>
+    </span>
   </a>
 
   <span class="menu-item dummy-link">{{ translation.menu.levels }}</span>
@@ -10,7 +12,7 @@
   <span class="menu-item dummy-link">{{ translation.menu.about }}</span>
 </div>
 
-<div class="menu-right">
+<div class="menu-right" #menuRight>
   <a class="menu-item nav-link" [routerLink]="['/known-issues']">{{ translation.menu.knownIssues }}</a>
   <span class="menu-item dummy-link"><strong>{{ translation.menu.login }}</strong></span>
   <span class="menu-item dummy-link">{{ translation.menu.signup }}</span>
diff --git a/src/app/features/header-menu/header-menu.scss b/src/app/features/header-menu/header-menu.scss
index d2aaf88..77c432a 100644
--- a/src/app/features/header-menu/header-menu.scss
+++ b/src/app/features/header-menu/header-menu.scss
@@ -5,7 +5,7 @@
   flex-direction: row;
   align-items: center;
   justify-content: start;
-  gap: 30px;
+  gap: 0;
 
   width: fit-content;
   min-width: 100%;
@@ -112,8 +112,12 @@
       }
 
       span {
-        /*text-box-trim: trim-both;
-        text-box-edge: cap alphabetic;*/
+        display: inline-block;
+
+        &.hidden {
+          display: none;
+          pointer-events: none;
+        }
       }
     }
   }
diff --git a/src/app/features/header-menu/header-menu.ts b/src/app/features/header-menu/header-menu.ts
index 9054beb..e132ff4 100644
--- a/src/app/features/header-menu/header-menu.ts
+++ b/src/app/features/header-menu/header-menu.ts
@@ -1,4 +1,14 @@
-import { Component, inject } from '@angular/core';
+import {
+  afterNextRender,
+  ChangeDetectionStrategy,
+  Component,
+  ElementRef,
+  inject,
+  NgZone,
+  OnDestroy,
+  signal,
+  viewChild,
+} from '@angular/core';
 import { RouterLink } from '@angular/router';
 import { PopupService } from '../../services/popup.service';
 import { SettingsPopup } from '../settings/settings';
@@ -10,12 +20,104 @@ import { SettingsService } from '../../services/settings.service';
   imports: [RouterLink],
   templateUrl: './header-menu.html',
   styleUrl: './header-menu.scss',
+  changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class HeaderMenu {
+export class HeaderMenu implements OnDestroy {
   private popupService = inject(PopupService);
   protected translation = inject(TranslationService).translation;
   protected settings = inject(SettingsService);
 
+  menuRight = viewChild<ElementRef<HTMLElement>>('menuRight');
+  brandText = viewChild<ElementRef<HTMLElement>>('brandText');
+
+  hasExtraSpace = signal(true);
+
+  private menuResizeObserver: ResizeObserver | null = null;
+  private textResizeObserver: ResizeObserver | null = null;
+
+  private childWidths = new Map<Element, number>();
+  private cachedTextWidth = 0;
+  private cachedRightMenuContentWidth = 0;
+
+  constructor(private ngZone: NgZone) {
+    afterNextRender(() => {
+      const rightElement = this.menuRight()?.nativeElement;
+      const textElement = this.brandText()?.nativeElement;
+      if (!rightElement || !textElement) return;
+
+      this.ngZone.runOutsideAngular(() => {
+        // 1. Right Menu & Children Observer
+        this.menuResizeObserver = new ResizeObserver((entries) => {
+          let containerWidth = -1;
+          let contentChanged = false;
+
+          for (const entry of entries) {
+            if (entry.target === rightElement) {
+              containerWidth = entry.borderBoxSize[0].inlineSize;
+              continue;
+            }
+
+            const width = entry.borderBoxSize[0].inlineSize;
+            if (this.childWidths.get(entry.target) !== width) {
+              this.childWidths.set(entry.target, width);
+              contentChanged = true;
+            }
+          }
+
+          if (contentChanged) this.updateCachedRightMenuContentWidth();
+          if (containerWidth !== -1) this.resize(containerWidth);
+        });
+
+        this.menuResizeObserver.observe(rightElement);
+        Array.from(rightElement.children).forEach((child) => {
+          this.childWidths.set(child, (child as HTMLElement).offsetWidth);
+          this.menuResizeObserver?.observe(child);
+        });
+
+        // 2. Brand Text Observer
+        this.textResizeObserver = new ResizeObserver((entries) => {
+          const width = entries[0].borderBoxSize[0].inlineSize;
+          if (width > 0) this.cachedTextWidth = width;
+        });
+
+        this.textResizeObserver.observe(textElement);
+
+        // Initial calculation
+        this.cachedTextWidth = textElement.offsetWidth;
+        this.updateCachedRightMenuContentWidth();
+        this.resize(rightElement.offsetWidth);
+      });
+    });
+  }
+
+  ngOnDestroy() {
+    this.menuResizeObserver?.disconnect();
+    this.textResizeObserver?.disconnect();
+    this.childWidths.clear();
+  }
+
+  private updateCachedRightMenuContentWidth() {
+    const gap = 48;
+    const widths = Array.from(this.childWidths.values());
+    if (widths.length === 0) {
+      this.cachedRightMenuContentWidth = 0;
+      return;
+    }
+
+    this.cachedRightMenuContentWidth =
+      widths.reduce((acc, w) => acc + w, 0) + (widths.length - 1) * gap;
+  }
+
+  private resize(availableWidth: number) {
+    const hadSpace = this.hasExtraSpace();
+
+    const buffer = 20 * 2 + 24; // Internal Padding + Logical Gap
+    const threshold = hadSpace ? 0 : this.cachedTextWidth;
+    const hasSpace = availableWidth > this.cachedRightMenuContentWidth + threshold + buffer;
+
+    if (hadSpace !== hasSpace) this.ngZone.run(() => this.hasExtraSpace.set(hasSpace));
+  }
+
   onSettingsClick() {
     this.popupService.open(SettingsPopup, { position: { top: '84px', right: '20px' } });
   }