Tablelist supports interactive cell editing with the aid of the Tk core entry, text, spinbox, checkbutton, and menubutton widgets. 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
entry, text,
spinbox, checkbutton, or
menubutton, respectively. (These options are
supported at cell level, too, with the aid of the cellconfigure
subcommand.) Since the default value of the
-editwindow column configuration option is
entry, it is not necessary to set it explicitly if the
editing should take place with the aid of an embedded entry widget.
REMARK: The temporary embedded Tk core widget used for
interactive cell editing will appear properly scaled, according to the
display's DPI scaling level, given by the variable
tablelist::scalingpct.
tablelist::tablelist command for details on the editing
process.-padx and
-pady options set to 2, its
-wrap option set to none, and its
initial height set to the number of lines contained in it. There is,
however, an exception from this rule: If the -wrap option of the cell's
column was set to true and Tk version 8.5 or higher is being used, then the
text widget's -wrap option will be set to
word and its initial height will equal the number of
display lines (taking into account the line wraps) contained in
it. You can use the script corresponding to the -editstartcommand
tablelist configuration option to override the initial settings (except
the height) according to your needs.-wrap option was
set to word or char (either by
Tablelist or from within the above-mentioned script) and Tk version 8.5 or
higher is being used, then, whenever its width changes (e.g., due to
interactive column resizing), its height will be set automatically to the
number of display lines contained in it. (The number of display lines
is retrieved with the aid of the count
-displaylines text widget subcommand, introduced in Tk
8.5.)package require Wcb
or package require wcb) then the text
widget's height will be updated automatically whenever text is inserted
into or deleted from it, which makes the editing much more
user-friendly. This is achieved by using an appropriately defined
after-insert and after-delete
callback for the edit window. You can use the script corresponding to
the -editstartcommand
tablelist configuration option to define further callbacks for the text
widget. (The above-mentioned callback is created via
wcb::cbappend, after returning from that
script.)Tab key is reserved for navigation between
the editable cells, but the user can insert a tabulator character into the
text widget by pressing Control-i.Return and KP_Enter keys insert
a newline character into the text widget. Control-j can
also be used for inserting a newline. Control-Return and
Control-KP_Enter terminate the editing and destroy the edit
window.Control-Home and Control-End have
their well-known text widget-specific bindings, just like
Meta-< and Meta-> if
tk_strictMotif is false. Again, this is different
from the behavior of the other widgets used for interactive cell
editing. For jumping into the first/last editable cell, the user can
press Alt-Home/Alt-End or
Meta-Home/Meta-End
(Command-Home/Command-End on Mac OS X/11+
Aqua).-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 spinbox to
readonly or define validations for it, as well as for
setting its (range of) values and its -wrap
option.-borderwidth,
-font, -padx,
-pady, and -variable options.
In an X11 environment it will be created with explicitly set values for its
-borderwidth, -indicatoron,
-image, -selectimage,
-background, -activebackground,
-selectcolor, and -variable
options. You can use the script corresponding to the
-editstartcommand
tablelist configuration option to set any other options, like
-offvalue and -onvalue, according
to the internal values of the cells. Since the default values
of the -offvalue and -onvalue
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.-anchor, -indicatoron,
-justify, -padx,
-pady, -relief, and
-textvariable options. In addition, a menu with
its -tearoff option set to 0 and an
appropriate script as the value of its -postcommand
option is created and set as the value of the menubutton's
-menu option. In an X11 environment, the menu's
appearance is adapted to that of the tablelist widget by setting its
-background, -foreground,
-activebackground,
-activeforeground, and
-activeborderwidth options to appropriate values.
You can use the script corresponding to the -editstartcommand
tablelist configuration option to set any other options of the menubutton
and/or its associated menu. You will, however, need this script in
the first place for populating the menu, preferably with radiobutton
entries. For every radiobutton entry added to the menu, the Tablelist
implementation will make sure that its value (which can be specified by
setting the entry's -value or
-label option) will be displayed in the menubutton as
its text when the entry is selected. (Tablelist achieves this by
setting the menu entry's -variable option to the value
of the menubutton's -textvariable option.) For
menu entries of types other than radiobutton (e.g., for command entries) it
is the responsibility of the application to make sure that the selected
entry's text will be shown in the menubutton (for example, with the aid of
the menu entry's -command option).