129 lines
4.6 KiB
Python
129 lines
4.6 KiB
Python
# markdownconverter/gui/editor.py
|
|
|
|
import tkinter as tk
|
|
from tkinter import messagebox
|
|
import ttkbootstrap as tb
|
|
from tkinter.scrolledtext import ScrolledText
|
|
from tkhtmlview import HTMLScrolledText
|
|
import markdown as MarkdownParser
|
|
|
|
|
|
class EditorWindow(tb.Toplevel):
|
|
"""
|
|
A Toplevel window that provides a side-by-side Markdown editor
|
|
and HTML preview with synchronized scrolling.
|
|
"""
|
|
|
|
def __init__(self, parent, file_path):
|
|
super().__init__(master=parent, title=f"Editing: {file_path}")
|
|
self.geometry("1200x800")
|
|
self.file_path = file_path
|
|
|
|
self.md_parser = MarkdownParser.Markdown(extensions=["fenced_code", "tables"])
|
|
|
|
self._setup_widgets()
|
|
|
|
# Set the custom scroll command
|
|
self.editor_text.vbar.config(command=self._on_editor_scroll)
|
|
|
|
if not self._load_file():
|
|
return
|
|
|
|
self.editor_text.bind("<KeyRelease>", self._update_preview)
|
|
|
|
def _setup_widgets(self):
|
|
"""Creates and arranges the widgets for the editor."""
|
|
paned_window = tb.PanedWindow(self, orient=tk.HORIZONTAL)
|
|
paned_window.pack(fill=tk.BOTH, expand=True, padx=10, pady=5)
|
|
|
|
editor_frame = tb.Frame(paned_window)
|
|
tb.Label(editor_frame, text="Markdown Editor").pack(anchor="w", pady=(0, 5))
|
|
self.editor_text = ScrolledText(
|
|
editor_frame, wrap=tk.WORD, width=60, font=("Courier New", 10)
|
|
)
|
|
self.editor_text.pack(fill=tk.BOTH, expand=True)
|
|
paned_window.add(editor_frame, weight=1)
|
|
|
|
preview_frame = tb.Frame(paned_window)
|
|
tb.Label(preview_frame, text="Live Preview").pack(anchor="w", pady=(0, 5))
|
|
self.preview_widget = HTMLScrolledText(preview_frame, background="white")
|
|
self.preview_widget.pack(fill=tk.BOTH, expand=True)
|
|
paned_window.add(preview_frame, weight=1)
|
|
|
|
button_frame = tb.Frame(self)
|
|
button_frame.pack(fill=tk.X, padx=10, pady=5)
|
|
|
|
tb.Button(
|
|
button_frame,
|
|
text="Save & Close",
|
|
command=self._save_and_close,
|
|
bootstyle="success",
|
|
).pack(side=tk.RIGHT, padx=5)
|
|
|
|
tb.Button(
|
|
button_frame, text="Cancel", command=self.destroy, bootstyle="secondary"
|
|
).pack(side=tk.RIGHT)
|
|
|
|
def _on_editor_scroll(self, *args):
|
|
"""
|
|
This method is set as the command for the editor's scrollbar.
|
|
It scrolls the editor text and syncs the preview.
|
|
"""
|
|
# Scroll the editor widget itself
|
|
self.editor_text.yview(*args)
|
|
|
|
# Get the new position
|
|
scroll_position_fraction = self.editor_text.yview()[0]
|
|
|
|
# --- CORREZIONE: Forza l'aggiornamento del widget di anteprima ---
|
|
# This ensures the preview widget knows its full size before we try to scroll it.
|
|
self.preview_widget.update_idletasks()
|
|
|
|
if hasattr(self.preview_widget, "html_label") and hasattr(
|
|
self.preview_widget.html_label, "_w"
|
|
):
|
|
self.preview_widget.html_label._w.yview_moveto(scroll_position_fraction)
|
|
|
|
def _load_file(self):
|
|
"""
|
|
Loads the content of the file into the editor.
|
|
Returns True on success, False on failure.
|
|
"""
|
|
try:
|
|
with open(self.file_path, "r", encoding="utf-8") as f:
|
|
content = f.read()
|
|
self.editor_text.delete("1.0", tk.END)
|
|
self.editor_text.insert("1.0", content)
|
|
self._update_preview()
|
|
return True
|
|
except Exception as e:
|
|
messagebox.showerror(
|
|
title="Error Loading File",
|
|
message=f"Could not load the file:\n{e}",
|
|
)
|
|
self.destroy()
|
|
return False
|
|
|
|
def _update_preview(self, event=None):
|
|
"""Updates the HTML preview with the current editor content."""
|
|
md_text = self.editor_text.get("1.0", tk.END)
|
|
self.md_parser.reset()
|
|
html_text = self.md_parser.convert(md_text)
|
|
self.preview_widget.set_html(html_text)
|
|
|
|
# --- CORREZIONE: Sincronizza sempre la vista dopo un aggiornamento ---
|
|
self._on_editor_scroll("moveto", self.editor_text.yview()[0])
|
|
|
|
def _save_and_close(self):
|
|
"""Saves the editor content back to the file and closes the window."""
|
|
try:
|
|
content = self.editor_text.get("1.0", tk.END).strip()
|
|
with open(self.file_path, "w", encoding="utf-8") as f:
|
|
f.write(content)
|
|
self.destroy()
|
|
except Exception as e:
|
|
messagebox.showerror(
|
|
title="Error Saving File",
|
|
message=f"Could not save the file:\n{e}",
|
|
)
|