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Delete script.js
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Jakub Růžička
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248
script.js
248
script.js
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// Define variables in a scope accessible by functions
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let notesList, addNoteFab, noteDialog, noteForm, noteIdInput, noteTitleInput, noteContentInput;
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let themeToggleBtn, body;
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let notes = [];
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let currentEditingId = null;
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async function initializeApp() {
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// List of MWC components your app uses directly
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const mwcComponents = [
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'md-icon', 'md-fab', 'md-dialog', 'md-filled-button', 'md-text-button',
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'md-icon-button', 'md-filled-text-field', 'md-outlined-text-field', 'md-elevation'
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];
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try {
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// Wait for all essential MWC components to be defined
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await Promise.all(mwcComponents.map(comp => customElements.whenDefined(comp)));
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console.log("All MWC components are ready.");
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} catch (error) {
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console.error("Error waiting for MWC components:", error);
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document.body.classList.add('loaded'); // Show body anyway
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const errorDiv = document.createElement('div');
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errorDiv.innerHTML = `
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<p>Error loading application components. The page might not work correctly.</p>
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<p>Please try refreshing. If the problem persists, check your browser console for details.</p>
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`;
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errorDiv.style.color = "red";
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errorDiv.style.textAlign = "center";
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errorDiv.style.padding = "20px";
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document.body.prepend(errorDiv);
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return; // Stop further initialization if critical components failed
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}
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// --- Assign DOM elements AFTER MWC components are ready and upgraded ---
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notesList = document.getElementById('notesList');
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addNoteFab = document.getElementById('addNoteFab');
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noteDialog = document.getElementById('noteDialog');
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noteForm = document.getElementById('noteForm');
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noteIdInput = document.getElementById('noteIdInput');
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noteTitleInput = document.getElementById('noteTitleInput');
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noteContentInput = document.getElementById('noteContentInput');
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themeToggleBtn = document.getElementById('themeToggleBtn');
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body = document.body;
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// --- Theming ---
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// Ensure applyTheme is called after themeToggleBtn and body are defined.
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loadInitialTheme(); // This will call applyTheme
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// --- Event Listeners (Attach now that elements are MWC-upgraded) ---
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themeToggleBtn.addEventListener('click', toggleTheme);
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addNoteFab.addEventListener('click', () => openNoteDialog());
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noteDialog.addEventListener('closed', handleDialogClose);
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// --- Initial Data Load ---
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loadNotes(); // This calls renderNotes, which creates more MWC elements
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// --- Make body visible now that everything is set up ---
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document.body.classList.add('loaded');
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console.log("MNotes App Initialized and Visible.");
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}
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// --- Theming Functions ---
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function loadInitialTheme() {
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const savedTheme = localStorage.getItem('mnotes-theme');
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if (savedTheme) {
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applyTheme(savedTheme);
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} else {
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applyTheme(window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light');
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}
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}
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function applyTheme(theme) { // theme is 'light' or 'dark'
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if (!body || !themeToggleBtn) {
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console.warn("Body or themeToggleBtn not ready for applyTheme.");
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return;
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}
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body.classList.remove('light-theme', 'dark-theme');
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body.classList.add(theme + '-theme');
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localStorage.setItem('mnotes-theme', theme);
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const iconElement = themeToggleBtn.querySelector('md-icon');
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if (iconElement) {
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iconElement.textContent = theme === 'dark' ? 'light_mode' : 'dark_mode';
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themeToggleBtn.ariaLabel = theme === 'dark' ? "Activate light theme" : "Activate dark theme";
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}
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}
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function toggleTheme() {
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const currentTheme = body.classList.contains('dark-theme') ? 'dark' : 'light';
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applyTheme(currentTheme === 'light' ? 'dark' : 'light');
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}
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// --- Data Persistence ---
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function loadNotes() {
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const storedNotes = localStorage.getItem('material-notes');
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notes = storedNotes ? JSON.parse(storedNotes) : [];
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renderNotes();
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}
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function saveNotes() {
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localStorage.setItem('material-notes', JSON.stringify(notes));
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}
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// --- Rendering Notes ---
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function renderNotes() {
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if (!notesList) {
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console.error("notesList element not found during renderNotes. App not fully initialized?");
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return;
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}
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notesList.innerHTML = ''; // Clear existing notes
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if (notes.length === 0) {
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const p = document.createElement('p');
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p.textContent = "No notes yet. Click the + button to add one!";
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notesList.appendChild(p);
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return;
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}
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notes.sort((a, b) => new Date(b.lastModified) - new Date(a.lastModified));
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notes.forEach(note => {
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const noteCard = document.createElement('div');
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noteCard.className = 'note-card';
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const elevation = document.createElement('md-elevation');
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noteCard.appendChild(elevation);
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const title = document.createElement('h3');
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title.textContent = note.title;
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const content = document.createElement('p');
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content.textContent = note.content.substring(0, 150) + (note.content.length > 150 ? '...' : '');
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const actions = document.createElement('div');
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actions.className = 'note-card-actions';
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const editButton = document.createElement('md-icon-button');
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editButton.innerHTML = `<md-icon>edit</md-icon>`;
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editButton.ariaLabel = `Edit note: ${note.title}`;
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editButton.addEventListener('click', (e) => { e.stopPropagation(); openNoteDialog(note); });
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const deleteButton = document.createElement('md-icon-button');
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deleteButton.innerHTML = `<md-icon>delete</md-icon>`;
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deleteButton.ariaLabel = `Delete note: ${note.title}`;
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deleteButton.addEventListener('click', (e) => { e.stopPropagation(); deleteNote(note.id); });
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actions.appendChild(editButton);
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actions.appendChild(deleteButton);
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noteCard.appendChild(title);
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noteCard.appendChild(content);
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noteCard.appendChild(actions);
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notesList.appendChild(noteCard);
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});
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}
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// --- Note Operations ---
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function openNoteDialog(note = null) {
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if (!noteForm || !noteTitleInput || !noteContentInput || !noteDialog) {
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console.error("Dialog elements not found for openNoteDialog.");
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return;
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}
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noteForm.reset();
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noteTitleInput.error = false; noteTitleInput.errorText = "";
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noteContentInput.error = false; noteContentInput.errorText = "";
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const headline = noteDialog.querySelector('[slot="headline"]');
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if (note) {
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currentEditingId = note.id;
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noteIdInput.value = note.id; // Keep track of ID if needed by form
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noteTitleInput.value = note.title;
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noteContentInput.value = note.content;
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if(headline) headline.textContent = 'Edit Note';
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} else {
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currentEditingId = null;
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noteIdInput.value = '';
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if(headline) headline.textContent = 'Add New Note';
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}
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noteDialog.show();
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}
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function handleDialogClose(event) {
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if (event.detail.action === 'save') { // 'action' is the value of the button that closed the dialog
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const title = noteTitleInput.value.trim();
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const content = noteContentInput.value.trim();
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let isValid = true;
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if (!title) {
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noteTitleInput.error = true; noteTitleInput.errorText = "Title cannot be empty.";
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isValid = false;
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} else {
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noteTitleInput.error = false; noteTitleInput.errorText = "";
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}
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if (!content) {
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noteContentInput.error = true; noteContentInput.errorText = "Content cannot be empty.";
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isValid = false;
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} else {
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noteContentInput.error = false; noteContentInput.errorText = "";
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}
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if (!isValid) {
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// If form is invalid and dialog closed (e.g. via form method="dialog"), reopen it.
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// Need a slight delay for the dialog to fully process its closing action.
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setTimeout(() => { if (noteDialog) noteDialog.show(); }, 0);
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return;
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}
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const now = new Date().toISOString();
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if (currentEditingId) {
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const noteIndex = notes.findIndex(n => n.id === currentEditingId);
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if (noteIndex > -1) {
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notes[noteIndex].title = title;
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notes[noteIndex].content = content;
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notes[noteIndex].lastModified = now;
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}
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} else {
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notes.push({
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id: Date.now().toString(), title, content,
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createdAt: now, lastModified: now
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});
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}
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saveNotes();
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renderNotes();
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}
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// Reset for next time dialog opens, regardless of save or cancel
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currentEditingId = null;
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if (noteForm) noteForm.reset();
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if (noteTitleInput) { noteTitleInput.error = false; noteTitleInput.errorText = ""; }
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if (noteContentInput) { noteContentInput.error = false; noteContentInput.errorText = ""; }
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}
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function deleteNote(id) {
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// Consider a md-dialog for confirmation for Material consistency
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if (confirm('Are you sure you want to delete this note?')) {
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notes = notes.filter(note => note.id !== id);
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saveNotes();
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renderNotes();
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}
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}
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// --- Start the application initialization ---
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// This ensures that the script attempts to initialize after the page DOM is loaded
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// and MWC has had a chance to load and start defining components.
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if (document.readyState === 'loading') {
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document.addEventListener('DOMContentLoaded', initializeApp);
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} else {
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initializeApp();
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}
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