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