tixTree(n) Tix Built-In Commands tixTree(n)NAMEtixTree - Create and manipulate tixTree widgets
SYNOPSIStixTree pathName ?options?
SUPER-CLASS
The TixTree class is derived from the TixScrolledHList class and inher‐
its all the commands, options and subwidgets of its super-class.
STANDARD OPTIONS
TixTree supports all the standard options of a frame widget. See the
options(n) manual entry for details on the standard options.
WIDGET-SPECIFIC OPTIONS
[-browsecmd browseCmd] Specifies a command to call whenever the user
browses on an entry (usually by single-clicking on the entry). The com‐
mand is called with one argument, the pathname of the entry.
[-closecmd closeCmd] Specifies a command to call whenever an entry
needs to be closed (See the BINDINGS section below). This command is
called with one argument, the pathname of the entry. This command
should perform appropriate actions to close the specified entry. If the
-closecmd option is not specified, the default closing action is to
hide all child entries of the specified entry. [-command command]
Specifies a command to call whenever the user activates an entry (usu‐
ally by double-clicking on the entry). The command is called with one
argument, the pathname of the entry. [-ignoreinvoke ignoreInvoke] A
Boolean value that specifies when a branch should be opened or closed.
A branch will always be opened or closed when the user presses the (+)
and (-) indicators. However, when the user invokes a branch (by doublc-
clicking or pressing <Return>), the branch will be opened or closed
only if -ignoreinvoke is set to false (the default setting).
[-opencmd openCmd] Specifies a command to call whenever an entry needs
to be opened (See the BINDINGS section below). This command is called
with one argument, the pathname of the entry. This command should per‐
form appropriate actions to open the specified entry. If the -opencmd
option is not specified, the default opening action is to show all the
child entries of the specified entry.
SUBWIDGETS
Name: hlist
Class: TixHList
The hierarchical listbox that displays the tree.
Name: hsb
Class: Scrollbar
The horizontal scrollbar subwidget.
Name: vsb
Class: Scrollbar
The vertical scrollbar subwidget.
DESCRIPTION
The tixTree command creates a new window (given by the pathName argu‐
ment) and makes it into a Tree widget. Additional options, described
above, may be specified on the command line or in the option database
to configure aspects of the Tree widget such as its cursor and relief.
The Tree widget can be used to display hierachical data in a tree form.
The user can adjust the view of the tree by opening or closing parts of
the tree.
To display a static tree structure, you can add the entries into the
hlist subwidget and hide any entries as desired. Then you can call the
autosetmode method. This will set up the Tree widget so that it handles
all the open and close events automatically.
The above method is not applicable if you want to maintain a dynamic
tree structure, i.e, you do not know all the entries in the tree and
you need to add or delete entries subsequently. To do this, you should
first create the entries in the hlist subwidget. Then, use the setmode
method to indicate the entries that can be opened or closed, and use
the -opencmd and -closecmd options to handle the opening and closing
events.
WIDGET COMMANDS
The tixTree command creates a new Tcl command whose name is the same as
the path name of the Tree's window. This command may be used to invoke
various operations on the widget. It has the following general form:
pathName option ?arg arg ...?
PathName is the name of the command, which is the same as the Tree wid‐
get's path name. Option and the args determine the exact behavior of
the command. The following commands are possible for Tree widgets:
pathName autosetmode
This command calls the setmode method for all the entries in
this Tree widget: if an entry has no child entries, its mode is
set to none. Otherwise, if the entry has any hidden child
entries, its mode is set to open; otherwise its mode is set to
close.
pathName cget option
Returns the current value of the configuration option given by
option. Option may have any of the values accepted by the tix‐
Tree command.
pathName close entryPath
Close the entry given by entryPath if its mode is close.
pathName configure ?option? ?value option value ...?
Query or modify the configuration options of the widget. If no
option is specified, returns a list describing all of the avail‐
able options for pathName (see Tk_ConfigureInfo for information
on the format of this list). If option is specified with no
value, then the command returns a list describing the one named
option (this list will be identical to the corresponding sublist
of the value returned if no option is specified). If one or
more option-value pairs are specified, then the command modifies
the given widget option(s) to have the given value(s); in this
case the command returns an empty string. Option may have any
of the values accepted by the tixTree command.
pathName getmode entryPath
Returns the current mode of the entry given by entryPath.
pathName open entryPath
Open the entry givaen by entryPath if its mode is open.
pathName setmode entryPath mode
This command is used to indicate whether the entry given by
entryPath has children entries and whether the children are vis‐
ible. mode must be one of open, close or none. If mode is set to
open, a (+) indicator is drawn next the the entry. If mode is
set to close, a (-) indicator is drawn next the the entry. If
mode is set to none, no indicators will be drawn for this entry.
The default mode is none. The open mode indicates the entry has
hidden children and this entry can be opened by the user. The
close mode indicates that all the children of the entry are now
visible and the entry can be closed by the user.
pathName subwidget name ?args?
When no options are given, this command returns the pathname of
the subwidget of the specified name.
When options are given, the widget command of the specified sub‐
widget will be called with these options.
BINDINGS
The basic mouse and keyboard bindings of the Tree widget are the same
as the bindings of the HList widget.
In addition, the entries can be opened or closed under the following
conditions:
[1] If the mode of the entry is open, it can be opened by clicking
on its (+) indicator or double-clicking on the entry.
[2] If the mode of the entry is close, it can be closed by clicking
on its (-) indicator or double-clicking on the entry.
KEYWORDSTix(n),tixHList(n)Tix 4.0 tixTree(n)
