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from tkinter import Entry, StringVar, Text, END, INSERT
from tkinter.scrolledtext import ScrolledText
from . import utilities as utils
from .base import TextWidget
class TextBox(TextWidget):
def __init__(
self,
master,
text="",
width=10,
height=1,
grid=None,
align=None,
visible=True,
enabled=None,
multiline=False,
scrollbar=False,
command=None,
hide_text=False):
self._multiline = multiline
# Set up controlling string variable
self._text = StringVar()
self._text.set( str(text) )
# Create a tk object for the text box
if multiline:
if scrollbar:
tk = ScrolledText(master.tk, wrap="word")
else:
tk = Text(master.tk, wrap="word")
tk.insert(END,self._text.get())
else:
tk = Entry(master.tk, textvariable=self._text)
super().__init__(master, tk, grid, align, visible, enabled, width, height)
self.hide_text = hide_text
self.update_command(command)
# Bind the key pressed event
self.events.set_event("<TextBox.KeyRelease>", "<KeyRelease>", self._key_released)
# PROPERTIES
# ----------------------------------
# The text value
@property
def value(self):
if self._multiline:
return self.tk.get(1.0,END)
else:
return self._text.get()
@value.setter
def value(self, value):
# if the TextBox is disabled, enable it so they value can be set
was_disabled = not self.enabled
if was_disabled:
self.enabled = True
self._text.set( str(value) )
if self._multiline:
self.tk.delete(1.0,END)
self.tk.insert(END,self._text.get())
if was_disabled:
self.enabled = False
def resize(self, width, height):
self._width = width
if width != "fill":
self._set_tk_config("width", width)
if height is not None:
if self._multiline:
self._height = height
if height != "fill":
self.tk.config(height=height)
else:
if isinstance(height, int):
if height > 1:
utils.error_format("Cannot change the height of a single line TextBox{}".format(self.description))
@property
def hide_text(self):
return self._hide_text
@hide_text.setter
def hide_text(self, value):
self._hide_text = value
if value == True:
show_value = "*"
elif value == False:
show_value = ""
else:
show_value = value
self._set_tk_config("show", show_value)
@property
def description(self):
"""
Returns the description for the widget.
"""
return "[TextBox] object with text '{}'".format(self.value)
@property
def cursor_position(self):
"""
Sets or returns the cursor position
"""
return self.tk.index(INSERT)
@cursor_position.setter
def cursor_position(self, value):
self.tk.icursor(value)
@property
def wrap(self):
if self._multiline:
return self._get_tk_config("wrap") != "none"
else:
return None
@wrap.setter
def wrap(self, value):
if self._multiline:
self._set_tk_config("wrap", "word" if value else "none")
else:
utils.error_format("wrap can only be set on a multiline TextBox")
# METHODS
# -------------------------------------------
def _key_released(self, event):
if self._command:
args_expected = utils.no_args_expected(self._command)
if args_expected == 0:
self._command()
elif args_expected == 1:
self._command(event.key)
else:
utils.error_format("TextBox command function must accept either 0 or 1 arguments.\nThe current command has {} arguments.".format(args_expected))
def update_command(self, command):
if command is None:
self._command = lambda: None
else:
self._command = command
# Clear text box
def clear(self):
self.value = ""
# Append text
def append(self, text):
self.value = self.value + str(text)
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