Example 11-4. PP4E\Gui\TextEditor\textEditor.py

"""
################################################################################
PyEdit 2.1: a Python/tkinter text file editor and component.

Uses the Tk text widget, plus GuiMaker menus and toolbar buttons to
implement a full-featured text editor that can be run as a standalone
program, and attached as a component to other GUIs. Also used by
PyMailGUI and PyView to edit mail text and image file notes, and by
PyMailGUI and PyDemos in pop-up mode to display source and text files.

New in version 2.1 (4E)
-updated to run under Python 3.X (3.1)
-added "grep" search menu option and dialog: threaded external files search
-verify app exit on quit if changes in other edit windows in process
-supports arbitrary Unicode encodings for files: per textConfig.py settings
-update change and font dialog implementations to allow many to be open
-runs self.update() before setting text in new editor for loadFirst
-various improvements to the Run Code option, per the next section

2.1 Run Code improvements:
-use base name after chdir to run code file, not possibly relative path
-use launch modes that support arguments for run code file mode on Windows
-run code inherits launchmodes backslash conversion (no longer required)

New in version 2.0 (3E)
-added simple font components input dialog
-use Tk 8.4 undo stack API to add undo/redo text modifications
-now verifies on quit, open, new, run, only if text modified and unsaved
-searches are case-insensitive now by default
-configuration module for initial font/color/size/searchcase

TBD (and suggested exercises):
-could also allow search case choice in GUI (not just config file)
-could use re patterns for searches and greps (see text chapter)
-could experiment with syntax-directed text colorization (see IDLE, others)
-could try to verify app exit for quit() in non-managed windows too?
-could queue each result as found in grep dialog thread to avoid delay
-could use images in toolbar buttons (per examples of this in Chapter 9)
-could scan line to map Tk insert position column to account for tabs on Info
-could experiment with "grep" tbd Unicode issues (see notes in the code);
################################################################################
"""

Version = '2.1'
import sys, os # platform, args, run tools
from tkinter import # base widgets, constants
from tkinter.filedialog import Open, SaveAs # standard dialogs
from tkinter.messagebox import showinfo, showerror, askyesno
from tkinter.simpledialog import askstring, askinteger
from tkinter.colorchooser import askcolor
from PP4E.Gui.Tools.guimaker import # Frame + menu/toolbar builders

general configurations

try:

PyEdit: A Text Editor Program/Object | 697