1098 lines
44 KiB
Python
1098 lines
44 KiB
Python
# Natural Language Toolkit: Table widget
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#
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# Copyright (C) 2001-2018 NLTK Project
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# Author: Edward Loper <edloper@gmail.com>
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# URL: <http://nltk.org/>
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# For license information, see LICENSE.TXT
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"""
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Tkinter widgets for displaying multi-column listboxes and tables.
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"""
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from __future__ import division
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import operator
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from six.moves.tkinter import (Frame, Label, Listbox, Scrollbar, Tk)
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######################################################################
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# Multi-Column Listbox
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######################################################################
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class MultiListbox(Frame):
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"""
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A multi-column listbox, where the current selection applies to an
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entire row. Based on the MultiListbox Tkinter widget
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recipe from the Python Cookbook (http://code.activestate.com/recipes/52266/)
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For the most part, ``MultiListbox`` methods delegate to its
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contained listboxes. For any methods that do not have docstrings,
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see ``Tkinter.Listbox`` for a description of what that method does.
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"""
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#/////////////////////////////////////////////////////////////////
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# Configuration
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#/////////////////////////////////////////////////////////////////
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#: Default configuration values for the frame.
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FRAME_CONFIG = dict(background='#888',
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takefocus=True,
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highlightthickness=1)
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#: Default configurations for the column labels.
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LABEL_CONFIG = dict(borderwidth=1, relief='raised',
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font='helvetica -16 bold',
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background='#444', foreground='white')
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#: Default configuration for the column listboxes.
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LISTBOX_CONFIG = dict(borderwidth=1,
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selectborderwidth=0,
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highlightthickness=0,
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exportselection=False,
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selectbackground='#888',
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activestyle='none',
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takefocus=False)
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#/////////////////////////////////////////////////////////////////
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# Constructor
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#/////////////////////////////////////////////////////////////////
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def __init__(self, master, columns, column_weights=None, cnf={}, **kw):
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"""
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Construct a new multi-column listbox widget.
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:param master: The widget that should contain the new
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multi-column listbox.
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:param columns: Specifies what columns should be included in
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the new multi-column listbox. If ``columns`` is an integer,
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the it is the number of columns to include. If it is
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a list, then its length indicates the number of columns
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to include; and each element of the list will be used as
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a label for the corresponding column.
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:param cnf, kw: Configuration parameters for this widget.
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Use ``label_*`` to configure all labels; and ``listbox_*``
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to configure all listboxes. E.g.:
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>>> mlb = MultiListbox(master, 5, label_foreground='red')
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"""
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# If columns was specified as an int, convert it to a list.
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if isinstance(columns, int):
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columns = list(range(columns))
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include_labels = False
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else:
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include_labels = True
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if len(columns) == 0:
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raise ValueError("Expected at least one column")
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# Instance variables
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self._column_names = tuple(columns)
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self._listboxes = []
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self._labels = []
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# Pick a default value for column_weights, if none was specified.
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if column_weights is None:
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column_weights = [1] * len(columns)
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elif len(column_weights) != len(columns):
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raise ValueError('Expected one column_weight for each column')
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self._column_weights = column_weights
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# Configure our widgets.
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Frame.__init__(self, master, **self.FRAME_CONFIG)
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self.grid_rowconfigure(1, weight=1)
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for i, label in enumerate(self._column_names):
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self.grid_columnconfigure(i, weight=column_weights[i])
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# Create a label for the column
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if include_labels:
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l = Label(self, text=label, **self.LABEL_CONFIG)
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self._labels.append(l)
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l.grid(column=i, row=0, sticky='news', padx=0, pady=0)
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l.column_index = i
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# Create a listbox for the column
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lb = Listbox(self, **self.LISTBOX_CONFIG)
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self._listboxes.append(lb)
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lb.grid(column=i, row=1, sticky='news', padx=0, pady=0)
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lb.column_index = i
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# Clicking or dragging selects:
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lb.bind('<Button-1>', self._select)
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lb.bind('<B1-Motion>', self._select)
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# Scroll whell scrolls:
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lb.bind('<Button-4>', lambda e: self._scroll(-1))
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lb.bind('<Button-5>', lambda e: self._scroll(+1))
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lb.bind('<MouseWheel>', lambda e: self._scroll(e.delta))
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# Button 2 can be used to scan:
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lb.bind('<Button-2>', lambda e: self.scan_mark(e.x, e.y))
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lb.bind('<B2-Motion>', lambda e: self.scan_dragto(e.x, e.y))
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# Dragging outside the window has no effect (diable
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# the default listbox behavior, which scrolls):
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lb.bind('<B1-Leave>', lambda e: 'break')
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# Columns can be resized by dragging them:
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l.bind('<Button-1>', self._resize_column)
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# Columns can be resized by dragging them. (This binding is
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# used if they click on the grid between columns:)
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self.bind('<Button-1>', self._resize_column)
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# Set up key bindings for the widget:
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self.bind('<Up>', lambda e: self.select(delta=-1))
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self.bind('<Down>', lambda e: self.select(delta=1))
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self.bind('<Prior>', lambda e: self.select(delta=-self._pagesize()))
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self.bind('<Next>', lambda e: self.select(delta=self._pagesize()))
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# Configuration customizations
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self.configure(cnf, **kw)
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#/////////////////////////////////////////////////////////////////
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# Column Resizing
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#/////////////////////////////////////////////////////////////////
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def _resize_column(self, event):
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"""
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Callback used to resize a column of the table. Return ``True``
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if the column is actually getting resized (if the user clicked
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on the far left or far right 5 pixels of a label); and
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``False`` otherwies.
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"""
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# If we're already waiting for a button release, then ignore
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# the new button press.
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if event.widget.bind('<ButtonRelease>'):
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return False
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# Decide which column (if any) to resize.
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self._resize_column_index = None
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if event.widget is self:
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for i, lb in enumerate(self._listboxes):
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if abs(event.x-(lb.winfo_x()+lb.winfo_width())) < 10:
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self._resize_column_index = i
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elif event.x > (event.widget.winfo_width()-5):
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self._resize_column_index = event.widget.column_index
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elif event.x < 5 and event.widget.column_index != 0:
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self._resize_column_index = event.widget.column_index-1
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# Bind callbacks that are used to resize it.
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if self._resize_column_index is not None:
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event.widget.bind('<Motion>', self._resize_column_motion_cb)
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event.widget.bind('<ButtonRelease-%d>' % event.num,
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self._resize_column_buttonrelease_cb)
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return True
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else:
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return False
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def _resize_column_motion_cb(self, event):
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lb = self._listboxes[self._resize_column_index]
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charwidth = lb.winfo_width() / lb['width']
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x1 = event.x + event.widget.winfo_x()
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x2 = lb.winfo_x() + lb.winfo_width()
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lb['width'] = max(3, lb['width'] + (x1-x2) // charwidth)
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def _resize_column_buttonrelease_cb(self, event):
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event.widget.unbind('<ButtonRelease-%d>' % event.num)
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event.widget.unbind('<Motion>')
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#/////////////////////////////////////////////////////////////////
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# Properties
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#/////////////////////////////////////////////////////////////////
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@property
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def column_names(self):
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"""
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A tuple containing the names of the columns used by this
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multi-column listbox.
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"""
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return self._column_names
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@property
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def column_labels(self):
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"""
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A tuple containing the ``Tkinter.Label`` widgets used to
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display the label of each column. If this multi-column
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listbox was created without labels, then this will be an empty
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tuple. These widgets will all be augmented with a
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``column_index`` attribute, which can be used to determine
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which column they correspond to. This can be convenient,
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e.g., when defining callbacks for bound events.
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"""
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return tuple(self._labels)
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@property
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def listboxes(self):
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"""
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A tuple containing the ``Tkinter.Listbox`` widgets used to
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display individual columns. These widgets will all be
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augmented with a ``column_index`` attribute, which can be used
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to determine which column they correspond to. This can be
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convenient, e.g., when defining callbacks for bound events.
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"""
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return tuple(self._listboxes)
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#/////////////////////////////////////////////////////////////////
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# Mouse & Keyboard Callback Functions
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#/////////////////////////////////////////////////////////////////
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def _select(self, e):
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i = e.widget.nearest(e.y)
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self.selection_clear(0, 'end')
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self.selection_set(i)
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self.activate(i)
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self.focus()
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def _scroll(self, delta):
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for lb in self._listboxes:
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lb.yview_scroll(delta, 'unit')
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return 'break'
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def _pagesize(self):
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""":return: The number of rows that makes up one page"""
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return int(self.index('@0,1000000')) - int(self.index('@0,0'))
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#/////////////////////////////////////////////////////////////////
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# Row selection
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#/////////////////////////////////////////////////////////////////
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def select(self, index=None, delta=None, see=True):
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"""
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Set the selected row. If ``index`` is specified, then select
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row ``index``. Otherwise, if ``delta`` is specified, then move
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the current selection by ``delta`` (negative numbers for up,
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positive numbers for down). This will not move the selection
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past the top or the bottom of the list.
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:param see: If true, then call ``self.see()`` with the newly
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selected index, to ensure that it is visible.
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"""
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if (index is not None) and (delta is not None):
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raise ValueError('specify index or delta, but not both')
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# If delta was given, then calculate index.
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if delta is not None:
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if len(self.curselection()) == 0:
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index = -1 + delta
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else:
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index = int(self.curselection()[0]) + delta
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# Clear all selected rows.
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self.selection_clear(0, 'end')
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# Select the specified index
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if index is not None:
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index = min(max(index, 0), self.size()-1)
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#self.activate(index)
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self.selection_set(index)
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if see: self.see(index)
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#/////////////////////////////////////////////////////////////////
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# Configuration
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#/////////////////////////////////////////////////////////////////
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def configure(self, cnf={}, **kw):
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"""
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Configure this widget. Use ``label_*`` to configure all
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labels; and ``listbox_*`` to configure all listboxes. E.g.:
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>>> mlb = MultiListbox(master, 5)
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>>> mlb.configure(label_foreground='red')
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>>> mlb.configure(listbox_foreground='red')
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"""
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cnf = dict(list(cnf.items()) + list(kw.items()))
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for (key, val) in list(cnf.items()):
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if key.startswith('label_') or key.startswith('label-'):
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for label in self._labels:
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label.configure({key[6:]: val})
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elif key.startswith('listbox_') or key.startswith('listbox-'):
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for listbox in self._listboxes:
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listbox.configure({key[8:]: val})
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else:
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Frame.configure(self, {key:val})
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def __setitem__(self, key, val):
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"""
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Configure this widget. This is equivalent to
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``self.configure({key,val``)}. See ``configure()``.
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"""
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self.configure({key:val})
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def rowconfigure(self, row_index, cnf={}, **kw):
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"""
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Configure all table cells in the given row. Valid keyword
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arguments are: ``background``, ``bg``, ``foreground``, ``fg``,
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``selectbackground``, ``selectforeground``.
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"""
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for lb in self._listboxes: lb.itemconfigure(row_index, cnf, **kw)
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def columnconfigure(self, col_index, cnf={}, **kw):
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"""
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Configure all table cells in the given column. Valid keyword
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arguments are: ``background``, ``bg``, ``foreground``, ``fg``,
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``selectbackground``, ``selectforeground``.
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"""
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lb = self._listboxes[col_index]
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cnf = dict(list(cnf.items()) + list(kw.items()))
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for (key, val) in list(cnf.items()):
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if key in ('background', 'bg', 'foreground', 'fg',
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'selectbackground', 'selectforeground'):
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for i in range(lb.size()): lb.itemconfigure(i, {key:val})
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else:
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lb.configure({key:val})
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def itemconfigure(self, row_index, col_index, cnf=None, **kw):
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"""
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Configure the table cell at the given row and column. Valid
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keyword arguments are: ``background``, ``bg``, ``foreground``,
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``fg``, ``selectbackground``, ``selectforeground``.
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"""
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lb = self._listboxes[col_index]
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return lb.itemconfigure(row_index, cnf, **kw)
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#/////////////////////////////////////////////////////////////////
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# Value Access
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#/////////////////////////////////////////////////////////////////
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def insert(self, index, *rows):
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"""
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Insert the given row or rows into the table, at the given
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index. Each row value should be a tuple of cell values, one
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for each column in the row. Index may be an integer or any of
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the special strings (such as ``'end'``) accepted by
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``Tkinter.Listbox``.
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"""
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for elt in rows:
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if len(elt) != len(self._column_names):
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raise ValueError('rows should be tuples whose length '
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'is equal to the number of columns')
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for (lb,elts) in zip(self._listboxes, list(zip(*rows))):
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lb.insert(index, *elts)
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def get(self, first, last=None):
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"""
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Return the value(s) of the specified row(s). If ``last`` is
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not specified, then return a single row value; otherwise,
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return a list of row values. Each row value is a tuple of
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cell values, one for each column in the row.
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"""
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values = [lb.get(first, last) for lb in self._listboxes]
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if last:
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return [tuple(row) for row in zip(*values)]
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else:
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return tuple(values)
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def bbox(self, row, col):
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"""
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Return the bounding box for the given table cell, relative to
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this widget's top-left corner. The bounding box is a tuple
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of integers ``(left, top, width, height)``.
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"""
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dx, dy, _, _ = self.grid_bbox(row=0, column=col)
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x, y, w, h = self._listboxes[col].bbox(row)
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return int(x)+int(dx), int(y)+int(dy), int(w), int(h)
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#/////////////////////////////////////////////////////////////////
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# Hide/Show Columns
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#/////////////////////////////////////////////////////////////////
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def hide_column(self, col_index):
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"""
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Hide the given column. The column's state is still
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maintained: its values will still be returned by ``get()``, and
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you must supply its values when calling ``insert()``. It is
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safe to call this on a column that is already hidden.
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:see: ``show_column()``
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"""
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if self._labels:
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self._labels[col_index].grid_forget()
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self.listboxes[col_index].grid_forget()
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self.grid_columnconfigure(col_index, weight=0)
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def show_column(self, col_index):
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"""
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Display a column that has been hidden using ``hide_column()``.
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It is safe to call this on a column that is not hidden.
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"""
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weight = self._column_weights[col_index]
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if self._labels:
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self._labels[col_index].grid(column=col_index, row=0,
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sticky='news', padx=0, pady=0)
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self._listboxes[col_index].grid(column=col_index, row=1,
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sticky='news', padx=0, pady=0)
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self.grid_columnconfigure(col_index, weight=weight)
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#/////////////////////////////////////////////////////////////////
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# Binding Methods
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#/////////////////////////////////////////////////////////////////
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def bind_to_labels(self, sequence=None, func=None, add=None):
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"""
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Add a binding to each ``Tkinter.Label`` widget in this
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mult-column listbox that will call ``func`` in response to the
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event sequence.
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:return: A list of the identifiers of replaced binding
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functions (if any), allowing for their deletion (to
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prevent a memory leak).
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"""
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return [label.bind(sequence, func, add)
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for label in self.column_labels]
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def bind_to_listboxes(self, sequence=None, func=None, add=None):
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"""
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Add a binding to each ``Tkinter.Listbox`` widget in this
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mult-column listbox that will call ``func`` in response to the
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event sequence.
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:return: A list of the identifiers of replaced binding
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functions (if any), allowing for their deletion (to
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prevent a memory leak).
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"""
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for listbox in self.listboxes:
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listbox.bind(sequence, func, add)
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def bind_to_columns(self, sequence=None, func=None, add=None):
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"""
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Add a binding to each ``Tkinter.Label`` and ``Tkinter.Listbox``
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widget in this mult-column listbox that will call ``func`` in
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response to the event sequence.
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:return: A list of the identifiers of replaced binding
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functions (if any), allowing for their deletion (to
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prevent a memory leak).
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"""
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return (self.bind_to_labels(sequence, func, add) +
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self.bind_to_listboxes(sequence, func, add))
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#/////////////////////////////////////////////////////////////////
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# Simple Delegation
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#/////////////////////////////////////////////////////////////////
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# These methods delegate to the first listbox:
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def curselection(self, *args, **kwargs):
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return self._listboxes[0].curselection(*args, **kwargs)
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def selection_includes(self, *args, **kwargs):
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return self._listboxes[0].selection_includes(*args, **kwargs)
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def itemcget(self, *args, **kwargs):
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return self._listboxes[0].itemcget(*args, **kwargs)
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def size(self, *args, **kwargs):
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return self._listboxes[0].size(*args, **kwargs)
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def index(self, *args, **kwargs):
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return self._listboxes[0].index(*args, **kwargs)
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def nearest(self, *args, **kwargs):
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return self._listboxes[0].nearest(*args, **kwargs)
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# These methods delegate to each listbox (and return None):
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def activate(self, *args, **kwargs):
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for lb in self._listboxes: lb.activate(*args, **kwargs)
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def delete(self, *args, **kwargs):
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for lb in self._listboxes: lb.delete(*args, **kwargs)
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def scan_mark(self, *args, **kwargs):
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for lb in self._listboxes: lb.scan_mark(*args, **kwargs)
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def scan_dragto(self, *args, **kwargs):
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for lb in self._listboxes: lb.scan_dragto(*args, **kwargs)
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def see(self, *args, **kwargs):
|
|
for lb in self._listboxes: lb.see(*args, **kwargs)
|
|
def selection_anchor(self, *args, **kwargs):
|
|
for lb in self._listboxes: lb.selection_anchor(*args, **kwargs)
|
|
def selection_clear(self, *args, **kwargs):
|
|
for lb in self._listboxes: lb.selection_clear(*args, **kwargs)
|
|
def selection_set(self, *args, **kwargs):
|
|
for lb in self._listboxes: lb.selection_set(*args, **kwargs)
|
|
def yview(self, *args, **kwargs):
|
|
for lb in self._listboxes: v = lb.yview(*args, **kwargs)
|
|
return v # if called with no arguments
|
|
def yview_moveto(self, *args, **kwargs):
|
|
for lb in self._listboxes: lb.yview_moveto(*args, **kwargs)
|
|
def yview_scroll(self, *args, **kwargs):
|
|
for lb in self._listboxes: lb.yview_scroll(*args, **kwargs)
|
|
|
|
#/////////////////////////////////////////////////////////////////
|
|
# Aliases
|
|
#/////////////////////////////////////////////////////////////////
|
|
|
|
itemconfig = itemconfigure
|
|
rowconfig = rowconfigure
|
|
columnconfig = columnconfigure
|
|
select_anchor = selection_anchor
|
|
select_clear = selection_clear
|
|
select_includes = selection_includes
|
|
select_set = selection_set
|
|
|
|
#/////////////////////////////////////////////////////////////////
|
|
# These listbox methods are not defined for multi-listbox
|
|
#/////////////////////////////////////////////////////////////////
|
|
# def xview(self, *what): pass
|
|
# def xview_moveto(self, fraction): pass
|
|
# def xview_scroll(self, number, what): pass
|
|
|
|
######################################################################
|
|
# Table
|
|
######################################################################
|
|
|
|
class Table(object):
|
|
"""
|
|
A display widget for a table of values, based on a ``MultiListbox``
|
|
widget. For many purposes, ``Table`` can be treated as a
|
|
list-of-lists. E.g., table[i] is a list of the values for row i;
|
|
and table.append(row) adds a new row with the given lits of
|
|
values. Individual cells can be accessed using table[i,j], which
|
|
refers to the j-th column of the i-th row. This can be used to
|
|
both read and write values from the table. E.g.:
|
|
|
|
>>> table[i,j] = 'hello'
|
|
|
|
The column (j) can be given either as an index number, or as a
|
|
column name. E.g., the following prints the value in the 3rd row
|
|
for the 'First Name' column:
|
|
|
|
>>> print(table[3, 'First Name'])
|
|
John
|
|
|
|
You can configure the colors for individual rows, columns, or
|
|
cells using ``rowconfig()``, ``columnconfig()``, and ``itemconfig()``.
|
|
The color configuration for each row will be preserved if the
|
|
table is modified; however, when new rows are added, any color
|
|
configurations that have been made for *columns* will not be
|
|
applied to the new row.
|
|
|
|
Note: Although ``Table`` acts like a widget in some ways (e.g., it
|
|
defines ``grid()``, ``pack()``, and ``bind()``), it is not itself a
|
|
widget; it just contains one. This is because widgets need to
|
|
define ``__getitem__()``, ``__setitem__()``, and ``__nonzero__()`` in
|
|
a way that's incompatible with the fact that ``Table`` behaves as a
|
|
list-of-lists.
|
|
|
|
:ivar _mlb: The multi-column listbox used to display this table's data.
|
|
:ivar _rows: A list-of-lists used to hold the cell values of this
|
|
table. Each element of _rows is a row value, i.e., a list of
|
|
cell values, one for each column in the row.
|
|
"""
|
|
def __init__(self, master, column_names, rows=None,
|
|
column_weights=None,
|
|
scrollbar=True, click_to_sort=True,
|
|
reprfunc=None, cnf={}, **kw):
|
|
"""
|
|
Construct a new Table widget.
|
|
|
|
:type master: Tkinter.Widget
|
|
:param master: The widget that should contain the new table.
|
|
:type column_names: list(str)
|
|
:param column_names: A list of names for the columns; these
|
|
names will be used to create labels for each column;
|
|
and can be used as an index when reading or writing
|
|
cell values from the table.
|
|
:type rows: list(list)
|
|
:param rows: A list of row values used to initialze the table.
|
|
Each row value should be a tuple of cell values, one for
|
|
each column in the row.
|
|
:type scrollbar: bool
|
|
:param scrollbar: If true, then create a scrollbar for the
|
|
new table widget.
|
|
:type click_to_sort: bool
|
|
:param click_to_sort: If true, then create bindings that will
|
|
sort the table's rows by a given column's values if the
|
|
user clicks on that colum's label.
|
|
:type reprfunc: function
|
|
:param reprfunc: If specified, then use this function to
|
|
convert each table cell value to a string suitable for
|
|
display. ``reprfunc`` has the following signature:
|
|
reprfunc(row_index, col_index, cell_value) -> str
|
|
(Note that the column is specified by index, not by name.)
|
|
:param cnf, kw: Configuration parameters for this widget's
|
|
contained ``MultiListbox``. See ``MultiListbox.__init__()``
|
|
for details.
|
|
"""
|
|
self._num_columns = len(column_names)
|
|
self._reprfunc = reprfunc
|
|
self._frame = Frame(master)
|
|
|
|
self._column_name_to_index = dict((c,i) for (i,c) in
|
|
enumerate(column_names))
|
|
|
|
# Make a copy of the rows & check that it's valid.
|
|
if rows is None: self._rows = []
|
|
else: self._rows = [[v for v in row] for row in rows]
|
|
for row in self._rows: self._checkrow(row)
|
|
|
|
# Create our multi-list box.
|
|
self._mlb = MultiListbox(self._frame, column_names,
|
|
column_weights, cnf, **kw)
|
|
self._mlb.pack(side='left', expand=True, fill='both')
|
|
|
|
# Optional scrollbar
|
|
if scrollbar:
|
|
sb = Scrollbar(self._frame, orient='vertical',
|
|
command=self._mlb.yview)
|
|
self._mlb.listboxes[0]['yscrollcommand'] = sb.set
|
|
#for listbox in self._mlb.listboxes:
|
|
# listbox['yscrollcommand'] = sb.set
|
|
sb.pack(side='right', fill='y')
|
|
self._scrollbar = sb
|
|
|
|
# Set up sorting
|
|
self._sortkey = None
|
|
if click_to_sort:
|
|
for i, l in enumerate(self._mlb.column_labels):
|
|
l.bind('<Button-1>', self._sort)
|
|
|
|
# Fill in our multi-list box.
|
|
self._fill_table()
|
|
|
|
#/////////////////////////////////////////////////////////////////
|
|
#{ Widget-like Methods
|
|
#/////////////////////////////////////////////////////////////////
|
|
# These all just delegate to either our frame or our MLB.
|
|
|
|
def pack(self, *args, **kwargs):
|
|
"""Position this table's main frame widget in its parent
|
|
widget. See ``Tkinter.Frame.pack()`` for more info."""
|
|
self._frame.pack(*args, **kwargs)
|
|
|
|
def grid(self, *args, **kwargs):
|
|
"""Position this table's main frame widget in its parent
|
|
widget. See ``Tkinter.Frame.grid()`` for more info."""
|
|
self._frame.grid(*args, **kwargs)
|
|
|
|
def focus(self):
|
|
"""Direct (keyboard) input foxus to this widget."""
|
|
self._mlb.focus()
|
|
|
|
def bind(self, sequence=None, func=None, add=None):
|
|
"""Add a binding to this table's main frame that will call
|
|
``func`` in response to the event sequence."""
|
|
self._mlb.bind(sequence, func, add)
|
|
|
|
def rowconfigure(self, row_index, cnf={}, **kw):
|
|
""":see: ``MultiListbox.rowconfigure()``"""
|
|
self._mlb.rowconfigure(row_index, cnf, **kw)
|
|
|
|
def columnconfigure(self, col_index, cnf={}, **kw):
|
|
""":see: ``MultiListbox.columnconfigure()``"""
|
|
col_index = self.column_index(col_index)
|
|
self._mlb.columnconfigure(col_index, cnf, **kw)
|
|
|
|
def itemconfigure(self, row_index, col_index, cnf=None, **kw):
|
|
""":see: ``MultiListbox.itemconfigure()``"""
|
|
col_index = self.column_index(col_index)
|
|
return self._mlb.itemconfigure(row_index, col_index, cnf, **kw)
|
|
|
|
def bind_to_labels(self, sequence=None, func=None, add=None):
|
|
""":see: ``MultiListbox.bind_to_labels()``"""
|
|
return self._mlb.bind_to_labels(sequence, func, add)
|
|
|
|
def bind_to_listboxes(self, sequence=None, func=None, add=None):
|
|
""":see: ``MultiListbox.bind_to_listboxes()``"""
|
|
return self._mlb.bind_to_listboxes(sequence, func, add)
|
|
|
|
def bind_to_columns(self, sequence=None, func=None, add=None):
|
|
""":see: ``MultiListbox.bind_to_columns()``"""
|
|
return self._mlb.bind_to_columns(sequence, func, add)
|
|
|
|
rowconfig = rowconfigure
|
|
columnconfig = columnconfigure
|
|
itemconfig = itemconfigure
|
|
|
|
#/////////////////////////////////////////////////////////////////
|
|
#{ Table as list-of-lists
|
|
#/////////////////////////////////////////////////////////////////
|
|
|
|
def insert(self, row_index, rowvalue):
|
|
"""
|
|
Insert a new row into the table, so that its row index will be
|
|
``row_index``. If the table contains any rows whose row index
|
|
is greater than or equal to ``row_index``, then they will be
|
|
shifted down.
|
|
|
|
:param rowvalue: A tuple of cell values, one for each column
|
|
in the new row.
|
|
"""
|
|
self._checkrow(rowvalue)
|
|
self._rows.insert(row_index, rowvalue)
|
|
if self._reprfunc is not None:
|
|
rowvalue = [self._reprfunc(row_index,j,v)
|
|
for (j,v) in enumerate(rowvalue)]
|
|
self._mlb.insert(row_index, rowvalue)
|
|
if self._DEBUG: self._check_table_vs_mlb()
|
|
|
|
def extend(self, rowvalues):
|
|
"""
|
|
Add new rows at the end of the table.
|
|
|
|
:param rowvalues: A list of row values used to initialze the
|
|
table. Each row value should be a tuple of cell values,
|
|
one for each column in the row.
|
|
"""
|
|
for rowvalue in rowvalues: self.append(rowvalue)
|
|
if self._DEBUG: self._check_table_vs_mlb()
|
|
|
|
def append(self, rowvalue):
|
|
"""
|
|
Add a new row to the end of the table.
|
|
|
|
:param rowvalue: A tuple of cell values, one for each column
|
|
in the new row.
|
|
"""
|
|
self.insert(len(self._rows), rowvalue)
|
|
if self._DEBUG: self._check_table_vs_mlb()
|
|
|
|
def clear(self):
|
|
"""
|
|
Delete all rows in this table.
|
|
"""
|
|
self._rows = []
|
|
self._mlb.delete(0, 'end')
|
|
if self._DEBUG: self._check_table_vs_mlb()
|
|
|
|
def __getitem__(self, index):
|
|
"""
|
|
Return the value of a row or a cell in this table. If
|
|
``index`` is an integer, then the row value for the ``index``th
|
|
row. This row value consists of a tuple of cell values, one
|
|
for each column in the row. If ``index`` is a tuple of two
|
|
integers, ``(i,j)``, then return the value of the cell in the
|
|
``i``th row and the ``j``th column.
|
|
"""
|
|
if isinstance(index, slice):
|
|
raise ValueError('Slicing not supported')
|
|
elif isinstance(index, tuple) and len(index)==2:
|
|
return self._rows[index[0]][self.column_index(index[1])]
|
|
else:
|
|
return tuple(self._rows[index])
|
|
|
|
def __setitem__(self, index, val):
|
|
"""
|
|
Replace the value of a row or a cell in this table with
|
|
``val``.
|
|
|
|
If ``index`` is an integer, then ``val`` should be a row value
|
|
(i.e., a tuple of cell values, one for each column). In this
|
|
case, the values of the ``index``th row of the table will be
|
|
replaced with the values in ``val``.
|
|
|
|
If ``index`` is a tuple of integers, ``(i,j)``, then replace the
|
|
value of the cell in the ``i``th row and ``j``th column with
|
|
``val``.
|
|
"""
|
|
if isinstance(index, slice):
|
|
raise ValueError('Slicing not supported')
|
|
|
|
|
|
# table[i,j] = val
|
|
elif isinstance(index, tuple) and len(index)==2:
|
|
i, j = index[0], self.column_index(index[1])
|
|
config_cookie = self._save_config_info([i])
|
|
self._rows[i][j] = val
|
|
if self._reprfunc is not None:
|
|
val = self._reprfunc(i, j, val)
|
|
self._mlb.listboxes[j].insert(i, val)
|
|
self._mlb.listboxes[j].delete(i+1)
|
|
self._restore_config_info(config_cookie)
|
|
|
|
# table[i] = val
|
|
else:
|
|
config_cookie = self._save_config_info([index])
|
|
self._checkrow(val)
|
|
self._rows[index] = list(val)
|
|
if self._reprfunc is not None:
|
|
val = [self._reprfunc(index,j,v) for (j,v) in enumerate(val)]
|
|
self._mlb.insert(index, val)
|
|
self._mlb.delete(index+1)
|
|
self._restore_config_info(config_cookie)
|
|
|
|
def __delitem__(self, row_index):
|
|
"""
|
|
Delete the ``row_index``th row from this table.
|
|
"""
|
|
if isinstance(row_index, slice):
|
|
raise ValueError('Slicing not supported')
|
|
if isinstance(row_index, tuple) and len(row_index)==2:
|
|
raise ValueError('Cannot delete a single cell!')
|
|
del self._rows[row_index]
|
|
self._mlb.delete(row_index)
|
|
if self._DEBUG: self._check_table_vs_mlb()
|
|
|
|
def __len__(self):
|
|
"""
|
|
:return: the number of rows in this table.
|
|
"""
|
|
return len(self._rows)
|
|
|
|
def _checkrow(self, rowvalue):
|
|
"""
|
|
Helper function: check that a given row value has the correct
|
|
number of elements; and if not, raise an exception.
|
|
"""
|
|
if len(rowvalue) != self._num_columns:
|
|
raise ValueError('Row %r has %d columns; expected %d' %
|
|
(rowvalue, len(rowvalue), self._num_columns))
|
|
|
|
#/////////////////////////////////////////////////////////////////
|
|
# Columns
|
|
#/////////////////////////////////////////////////////////////////
|
|
|
|
@property
|
|
def column_names(self):
|
|
"""A list of the names of the columns in this table."""
|
|
return self._mlb.column_names
|
|
|
|
def column_index(self, i):
|
|
"""
|
|
If ``i`` is a valid column index integer, then return it as is.
|
|
Otherwise, check if ``i`` is used as the name for any column;
|
|
if so, return that column's index. Otherwise, raise a
|
|
``KeyError`` exception.
|
|
"""
|
|
if isinstance(i, int) and 0 <= i < self._num_columns:
|
|
return i
|
|
else:
|
|
# This raises a key error if the column is not found.
|
|
return self._column_name_to_index[i]
|
|
|
|
def hide_column(self, column_index):
|
|
""":see: ``MultiListbox.hide_column()``"""
|
|
self._mlb.hide_column(self.column_index(column_index))
|
|
|
|
def show_column(self, column_index):
|
|
""":see: ``MultiListbox.show_column()``"""
|
|
self._mlb.show_column(self.column_index(column_index))
|
|
|
|
#/////////////////////////////////////////////////////////////////
|
|
# Selection
|
|
#/////////////////////////////////////////////////////////////////
|
|
|
|
def selected_row(self):
|
|
"""
|
|
Return the index of the currently selected row, or None if
|
|
no row is selected. To get the row value itself, use
|
|
``table[table.selected_row()]``.
|
|
"""
|
|
sel = self._mlb.curselection()
|
|
if sel: return int(sel[0])
|
|
else: return None
|
|
|
|
def select(self, index=None, delta=None, see=True):
|
|
""":see: ``MultiListbox.select()``"""
|
|
self._mlb.select(index, delta, see)
|
|
|
|
#/////////////////////////////////////////////////////////////////
|
|
# Sorting
|
|
#/////////////////////////////////////////////////////////////////
|
|
|
|
def sort_by(self, column_index, order='toggle'):
|
|
"""
|
|
Sort the rows in this table, using the specified column's
|
|
values as a sort key.
|
|
|
|
:param column_index: Specifies which column to sort, using
|
|
either a column index (int) or a column's label name
|
|
(str).
|
|
|
|
:param order: Specifies whether to sort the values in
|
|
ascending or descending order:
|
|
|
|
- ``'ascending'``: Sort from least to greatest.
|
|
- ``'descending'``: Sort from greatest to least.
|
|
- ``'toggle'``: If the most recent call to ``sort_by()``
|
|
sorted the table by the same column (``column_index``),
|
|
then reverse the rows; otherwise sort in ascending
|
|
order.
|
|
"""
|
|
if order not in ('ascending', 'descending', 'toggle'):
|
|
raise ValueError('sort_by(): order should be "ascending", '
|
|
'"descending", or "toggle".')
|
|
column_index = self.column_index(column_index)
|
|
config_cookie = self._save_config_info(index_by_id=True)
|
|
|
|
# Sort the rows.
|
|
if order == 'toggle' and column_index == self._sortkey:
|
|
self._rows.reverse()
|
|
else:
|
|
self._rows.sort(key=operator.itemgetter(column_index),
|
|
reverse=(order=='descending'))
|
|
self._sortkey = column_index
|
|
|
|
# Redraw the table.
|
|
self._fill_table()
|
|
self._restore_config_info(config_cookie, index_by_id=True, see=True)
|
|
if self._DEBUG: self._check_table_vs_mlb()
|
|
|
|
def _sort(self, event):
|
|
"""Event handler for clicking on a column label -- sort by
|
|
that column."""
|
|
column_index = event.widget.column_index
|
|
|
|
# If they click on the far-left of far-right of a column's
|
|
# label, then resize rather than sorting.
|
|
if self._mlb._resize_column(event):
|
|
return 'continue'
|
|
|
|
# Otherwise, sort.
|
|
else:
|
|
self.sort_by(column_index)
|
|
return 'continue'
|
|
|
|
#/////////////////////////////////////////////////////////////////
|
|
#{ Table Drawing Helpers
|
|
#/////////////////////////////////////////////////////////////////
|
|
|
|
def _fill_table(self, save_config=True):
|
|
"""
|
|
Re-draw the table from scratch, by clearing out the table's
|
|
multi-column listbox; and then filling it in with values from
|
|
``self._rows``. Note that any cell-, row-, or column-specific
|
|
color configuration that has been done will be lost. The
|
|
selection will also be lost -- i.e., no row will be selected
|
|
after this call completes.
|
|
"""
|
|
self._mlb.delete(0, 'end')
|
|
for i, row in enumerate(self._rows):
|
|
if self._reprfunc is not None:
|
|
row = [self._reprfunc(i,j,v) for (j,v) in enumerate(row)]
|
|
self._mlb.insert('end', row)
|
|
|
|
def _get_itemconfig(self, r, c):
|
|
return dict( (k, self._mlb.itemconfig(r, c, k)[-1])
|
|
for k in ('foreground', 'selectforeground',
|
|
'background', 'selectbackground') )
|
|
|
|
def _save_config_info(self, row_indices=None, index_by_id=False):
|
|
"""
|
|
Return a 'cookie' containing information about which row is
|
|
selected, and what color configurations have been applied.
|
|
this information can the be re-applied to the table (after
|
|
making modifications) using ``_restore_config_info()``. Color
|
|
configuration information will be saved for any rows in
|
|
``row_indices``, or in the entire table, if
|
|
``row_indices=None``. If ``index_by_id=True``, the the cookie
|
|
will associate rows with their configuration information based
|
|
on the rows' python id. This is useful when performing
|
|
operations that re-arrange the rows (e.g. ``sort``). If
|
|
``index_by_id=False``, then it is assumed that all rows will be
|
|
in the same order when ``_restore_config_info()`` is called.
|
|
"""
|
|
# Default value for row_indices is all rows.
|
|
if row_indices is None:
|
|
row_indices = list(range(len(self._rows)))
|
|
|
|
# Look up our current selection.
|
|
selection = self.selected_row()
|
|
if index_by_id and selection is not None:
|
|
selection = id(self._rows[selection])
|
|
|
|
# Look up the color configuration info for each row.
|
|
if index_by_id:
|
|
config = dict((id(self._rows[r]), [self._get_itemconfig(r, c)
|
|
for c in range(self._num_columns)])
|
|
for r in row_indices)
|
|
else:
|
|
config = dict((r, [self._get_itemconfig(r, c)
|
|
for c in range(self._num_columns)])
|
|
for r in row_indices)
|
|
|
|
|
|
return selection, config
|
|
|
|
def _restore_config_info(self, cookie, index_by_id=False, see=False):
|
|
"""
|
|
Restore selection & color configuration information that was
|
|
saved using ``_save_config_info``.
|
|
"""
|
|
selection, config = cookie
|
|
|
|
# Clear the selection.
|
|
if selection is None:
|
|
self._mlb.selection_clear(0, 'end')
|
|
|
|
# Restore selection & color config
|
|
if index_by_id:
|
|
for r, row in enumerate(self._rows):
|
|
if id(row) in config:
|
|
for c in range(self._num_columns):
|
|
self._mlb.itemconfigure(r, c, config[id(row)][c])
|
|
if id(row) == selection:
|
|
self._mlb.select(r, see=see)
|
|
else:
|
|
if selection is not None:
|
|
self._mlb.select(selection, see=see)
|
|
for r in config:
|
|
for c in range(self._num_columns):
|
|
self._mlb.itemconfigure(r, c, config[r][c])
|
|
|
|
#/////////////////////////////////////////////////////////////////
|
|
# Debugging (Invariant Checker)
|
|
#/////////////////////////////////////////////////////////////////
|
|
|
|
_DEBUG = False
|
|
"""If true, then run ``_check_table_vs_mlb()`` after any operation
|
|
that modifies the table."""
|
|
|
|
def _check_table_vs_mlb(self):
|
|
"""
|
|
Verify that the contents of the table's ``_rows`` variable match
|
|
the contents of its multi-listbox (``_mlb``). This is just
|
|
included for debugging purposes, to make sure that the
|
|
list-modifying operations are working correctly.
|
|
"""
|
|
for col in self._mlb.listboxes:
|
|
assert len(self) == col.size()
|
|
for row in self:
|
|
assert len(row) == self._num_columns
|
|
assert self._num_columns == len(self._mlb.column_names)
|
|
#assert self._column_names == self._mlb.column_names
|
|
for i, row in enumerate(self):
|
|
for j, cell in enumerate(row):
|
|
if self._reprfunc is not None:
|
|
cell = self._reprfunc(i, j, cell)
|
|
assert self._mlb.get(i)[j] == cell
|
|
|
|
######################################################################
|
|
# Demo/Test Function
|
|
######################################################################
|
|
|
|
# update this to use new WordNet API
|
|
def demo():
|
|
root = Tk()
|
|
root.bind('<Control-q>', lambda e: root.destroy())
|
|
|
|
table = Table(root, 'Word Synset Hypernym Hyponym'.split(),
|
|
column_weights=[0, 1, 1, 1],
|
|
reprfunc=(lambda i,j,s: ' %s' % s))
|
|
table.pack(expand=True, fill='both')
|
|
|
|
from nltk.corpus import wordnet
|
|
from nltk.corpus import brown
|
|
for word, pos in sorted(set(brown.tagged_words()[:500])):
|
|
if pos[0] != 'N': continue
|
|
word = word.lower()
|
|
for synset in wordnet.synsets(word):
|
|
try:
|
|
hyper_def = synset.hypernyms()[0].definition()
|
|
except:
|
|
hyper_def = '*none*'
|
|
try:
|
|
hypo_def = synset.hypernyms()[0].definition()
|
|
except:
|
|
hypo_def = '*none*'
|
|
table.append([word,
|
|
synset.definition(),
|
|
hyper_def,
|
|
hypo_def])
|
|
|
|
table.columnconfig('Word', background='#afa')
|
|
table.columnconfig('Synset', background='#efe')
|
|
table.columnconfig('Hypernym', background='#fee')
|
|
table.columnconfig('Hyponym', background='#ffe')
|
|
for row in range(len(table)):
|
|
for column in ('Hypernym', 'Hyponym'):
|
|
if table[row, column] == '*none*':
|
|
table.itemconfig(row, column, foreground='#666',
|
|
selectforeground='#666')
|
|
root.mainloop()
|
|
|
|
if __name__ == '__main__':
|
|
demo()
|