# Interactive Tablelist Cell Editing Using tile Widgets

### by

## Csaba Nemethi

## Contents

- Overview
- Interactive Cell Editing Using the tile entry Widget
- Interactive Cell Editing Using the tile combobox Widget
- Interactive Cell Editing Using the tile checkbutton Widget

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## Overview

The tile theme engine is a compiled library extension for Tcl/Tk version 8.4 or higher. Beginning with Tk 8.5a6, tile is integrated into the Tk core. For earlier Tk versions it can be downloaded from the address

Tablelist supports interactive cell editing with the aid of the tile entry, combobox, and checkbutton widgets, accessed as `ttk::entry`, `ttk::combobox`, and `ttk::checkbutton`, respectively. The version of the tile package must be 0.6 or higher. Due to the rapidly growing strategic importance of the tile library, these widgets are automatically registered for cell editing, hence the only action needed for using one of them for editing the cells of a given column is as follows:

Use the tablelist widget's `columnconfigure` subcommand to set the given column's `-editable` option to true and its `-editwindow` option to `ttk::entry`, `ttk::combobox`, or `ttk::checkbutton`, respectively. (These options are supported at cell level, too, with the aid of the `cellconfigure` subcommand.)

One known limitation of the currently available tile versions is that the `style theme use` command can only be used to set the current theme, but not to retrieve it. For this reason, Tablelist makes use of the variable `ttk::currentTheme` or `tile::currentTheme` (depending on the tile version), which is set by the `ttk::setTheme` or `tile::setTheme` procedure. From this it follows that the tile widgets used for interactive cell editing will only be managed as expected if the platform-specific default theme is either left unchanged or replaced with another theme by invoking the procedure `ttk::currentTheme` or `tile::setTheme`, depending on the current tile version. (See also the `tablelist::setTheme` command.)

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## Interactive Cell Editing Using the tile entry Widget

DESCRIPTION
  The temporary embedded tile entry widget used for interactive cell editing will be created with an explicitly set value for its `-style` option. Apart from its theme-specific appearance, it behaves just like its Tk core counterpart.

  If an application uses the tile entry widget for interactive cell editing and also the Wcb package (even if not for that widget), then the version of Wcb must be 3.1 or higher (because earlier Wcb releases didn't support any tile widgets).

KEYWORDS
  tablelist, editing, tile, entry

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## Interactive Cell Editing Using the tile combobox Widget

DESCRIPTION
  The temporary embedded tile combobox widget used for interactive cell editing will be created with an explicitly set value for its `-style` option and with its `-state` option set to `normal`, which makes the widget editable. You can use the script corresponding to the `-editstartcommand` tablelist configuration option to set the state of the combobox to `readonly` or define validations for it, as well as for populating its listbox component (with the aid of the combobox widget's `-values` option).

  If an application uses the tile combobox widget for interactive cell editing and also the Wcb package (even if not for that widget), then the version of Wcb must be 3.1 or higher (because earlier Wcb releases didn't support any tile widgets).

KEYWORDS
  tablelist, editing, tile, combobox

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## Interactive Cell Editing Using the tile checkbutton Widget.

DESCRIPTION
  The temporary embedded tile checkbutton widget used for interactive cell editing will be created with explicitly set values for its `-style` and `-variable` options. You can use the script corresponding to the `-editstartcommand` tablelist configuration option to set any other configuration options, like `-offvalue` and `-onvalue`, according to the internal values of the cells. Since the default values of the `-offvalue` and `-onvalue` tile checkbutton options are `0` and `1`, you don't need to change these options if the cells have the same internal values `0` and `1`.
KEYWORDS
  tablelist, editing, tile, checkbutton

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