markdown-converter/src/sidebar/sidebar-manager.js

class SidebarManager {
  constructor() {
    this.sidebar = document.getElementById('sidebar');
    this.panelContent = document.getElementById('sidebar-panel-content');
    this.panelTitle = document.querySelector('.sidebar-panel-title');
    this.activePanel = null;
    this.panels = new Map();
    this.setupEventListeners();
  }

  setupEventListeners() {
    document.querySelectorAll('.sidebar-icon').forEach((btn) => {
      btn.addEventListener('click', () => this.togglePanel(btn.dataset.panel));
    });
    document
      .querySelector('.sidebar-panel-close')
      ?.addEventListener('click', () => this.collapse());
  }

  registerPanel(name, { title, render }) {
    this.panels.set(name, { title, render });
  }

  togglePanel(name) {
    if (this.activePanel === name) {
      this.collapse();
    } else {
      this.expand(name);
    }
  }

  expand(name) {
    const panel = this.panels.get(name);
    if (!panel) return;
    this.sidebar.classList.remove('collapsed');
    this.panelTitle.textContent = panel.title;
    this.panelContent.innerHTML = '';
    panel.render(this.panelContent);
    this.activePanel = name;
    document.querySelectorAll('.sidebar-icon').forEach((btn) => {
      btn.classList.toggle('active', btn.dataset.panel === name);
    });
  }

  collapse() {
    this.sidebar.classList.add('collapsed');
    this.activePanel = null;
    document.querySelectorAll('.sidebar-icon').forEach((btn) => btn.classList.remove('active'));
  }
}

module.exports = { SidebarManager };