import tkinter as tk from tkinter import messagebox class NoteTakingApp: def __init__(self, master): self.master = master self.master.title("Note Taking App") self.notes = [] self.listbox = tk.Listbox(self.master, width=50, height=20) self.listbox.pack(pady=10) self.listbox.bind("<>", self.display_note) self.load_notes() self.search_entry = tk.Entry(self.master) self.search_entry.pack(pady=5) self.search_button = tk.Button(self.master, text="Search", command=self.search_notes) self.search_button.pack() self.add_button = tk.Button(self.master, text="Add Note", command=self.add_note_window) self.add_button.pack() self.edit_button = tk.Button(self.master, text="Edit Note", command=self.edit_note) self.edit_button.pack() self.delete_button = tk.Button(self.master, text="Delete Note", command=self.delete_note) self.delete_button.pack() self.note_content = tk.Text(self.master, width=50, height=10) self.note_content.pack(pady=10) def search_notes(self): query = self.search_entry.get().strip().lower() if not query: messagebox.showinfo("Info", "Please enter a search query.") return matching_notes = [(title, note) for title, note in self.notes if query in title.lower() or query in note.lower()] if matching_notes: self.listbox.delete(0, "end") for title, _ in matching_notes: self.listbox.insert("end", title) else: messagebox.showinfo("Info", "No matching notes found.") def add_note_window(self): add_note_window = tk.Toplevel(self.master) add_note_window.title("Add Note") title_label = tk.Label(add_note_window, text="Title:") title_label.grid(row=0, column=0, padx=10, pady=5) self.title_entry = tk.Entry(add_note_window) self.title_entry.grid(row=0, column=1, padx=10, pady=5) note_label = tk.Label(add_note_window, text="Note:") note_label.grid(row=1, column=0, padx=10, pady=5) self.note_entry = tk.Text(add_note_window, width=40, height=5) self.note_entry.grid(row=1, column=1, padx=10, pady=5) bold_button = tk.Button(add_note_window, text="Bold", command=lambda: self.apply_formatting("bold")) bold_button.grid(row=2, column=0, padx=10, pady=5) italic_button = tk.Button(add_note_window, text="Italic", command=lambda: self.apply_formatting("italic")) italic_button.grid(row=2, column=1, padx=10, pady=5) bullet_button = tk.Button(add_note_window, text="Bullet", command=lambda: self.apply_formatting("bullet")) bullet_button.grid(row=2, column=2, padx=10, pady=5) save_button = tk.Button(add_note_window, text="Save", command=self.save_note) save_button.grid(row=3, columnspan=3, padx=10, pady=5) def edit_note(self): selected_index = self.listbox.curselection() if not selected_index: messagebox.showerror("Error", "Please select a note to edit.") return selected_note_index = selected_index[0] title, note = self.notes[selected_note_index] edit_note_window = tk.Toplevel(self.master) edit_note_window.title("Edit Note") title_label = tk.Label(edit_note_window, text="Title:") title_label.grid(row=0, column=0, padx=10, pady=5) self.title_entry = tk.Entry(edit_note_window) self.title_entry.insert(0, title) self.title_entry.grid(row=0, column=1, padx=10, pady=5) note_label = tk.Label(edit_note_window, text="Note:") note_label.grid(row=1, column=0, padx=10, pady=5) self.note_entry = tk.Text(edit_note_window, width=40, height=5) self.note_entry.insert("1.0", note) self.note_entry.grid(row=1, column=1, padx=10, pady=5) bold_button = tk.Button(edit_note_window, text="Bold", command=lambda: self.apply_formatting("bold")) bold_button.grid(row=2, column=0, padx=10, pady=5) italic_button = tk.Button(edit_note_window, text="Italic", command=lambda: self.apply_formatting("italic")) italic_button.grid(row=2, column=1, padx=10, pady=5) bullet_button = tk.Button(edit_note_window, text="Bullet", command=lambda: self.apply_formatting("bullet")) bullet_button.grid(row=2, column=2, padx=10, pady=5) save_button = tk.Button(edit_note_window, text="Save", command=lambda: self.save_edit(selected_note_index)) save_button.grid(row=3, columnspan=3, padx=10, pady=5) def display_note(self, event): selected_index = self.listbox.curselection() if selected_index: selected_note_index = selected_index[0] title, note = self.notes[selected_note_index] self.note_content.delete("1.0", "end") self.note_content.insert("1.0", note) def apply_formatting(self, format_type): if format_type == "bold": current_tags = self.note_entry.tag_names("sel.first") if "bold" in current_tags: self.note_entry.tag_remove("bold", "sel.first", "sel.last") else: self.note_entry.tag_add("bold", "sel.first", "sel.last") self.note_entry.tag_configure("bold", font=("TkDefaultFont", 10, "bold")) elif format_type == "italic": current_tags = self.note_entry.tag_names("sel.first") if "italic" in current_tags: self.note_entry.tag_remove("italic", "sel.first", "sel.last") else: self.note_entry.tag_add("italic", "sel.first", "sel.last") self.note_entry.tag_configure("italic", font=("TkDefaultFont", 10, "italic")) elif format_type == "bullet": self.note_entry.insert("insert", "\u2022 ", "bullet") self.note_entry.tag_configure("bullet", lmargin1=20) def save_edit(self, index): title = self.title_entry.get().strip() note = self.note_entry.get("1.0", "end-1c").strip() if title == "": messagebox.showerror("Error", "Title cannot be empty!") return if note == "": messagebox.showerror("Error", "Note cannot be empty!") return self.notes[index] = (title, note) self.update_listbox() def delete_note(self): selected_index = self.listbox.curselection() if not selected_index: messagebox.showerror("Error", "Please select a note to delete.") return selected_note_index = selected_index[0] self.notes.pop(selected_note_index) self.update_listbox() def save_note(self): title = self.title_entry.get().strip() note = self.note_entry.get("1.0", "end-1c").strip() if title == "": messagebox.showerror("Error", "Title cannot be empty!") return if note == "": messagebox.showerror("Error", "Note cannot be empty!") return self.notes.append((title, note)) self.update_listbox() self.title_entry.delete(0, "end") self.note_entry.delete("1.0", "end") def update_listbox(self): self.listbox.delete(0, "end") for title, _ in self.notes: self.listbox.insert("end", title) def load_notes(self): # This method can be used to load notes from a file/database at the beginning pass def main(): root = tk.Tk() app = NoteTakingApp(root) root.mainloop() if __name__ == "__main__": main()