DOKK / manpages / debian 10 / tk8.6-doc / ttk_treeview.3tk.en
ttk::treeview(3tk) Tk Themed Widget ttk::treeview(3tk) 







ttk::treeview - hierarchical multicolumn data display widget








ttk::treeview pathname ?options?










The ttk::treeview widget displays a hierarchical collection
    of items. Each item has a textual label, an optional image, and an optional
    list of data values. The data values are displayed in successive columns
    after the tree label.


The order in which data values are displayed may be controlled by
    setting the -displaycolumns widget option. The tree widget can also
    display column headings. Columns may be accessed by number or by symbolic
    names listed in the -columns widget option; see COLUMN
    IDENTIFIERS.


Each item is identified by a unique name. The widget will generate
    item IDs if they are not supplied by the caller. There is a distinguished
    root item, named {}. The root item itself is not displayed; its
    children appear at the top level of the hierarchy.


Each item also has a list of tags, which can be used to
    associate event bindings with individual items and control the appearance of
    the item.


Treeview widgets support horizontal and vertical scrolling with
    the standard -[xy]scrollcommand options and
    [xy]view widget commands.








-class	-cursor	-takefocus
-style	-xscrollcommand	-yscrollcommand
-padding


See the ttk_widget manual entry for details on the standard
    options.








Command-Line Name:	-columns
Database Name:	columns
Database Class:	Columns



  

  
A list of column identifiers, specifying the number of columns and their
      names.






Command-Line Name:	-displaycolumns
Database Name:	displayColumns
Database Class:	DisplayColumns



  

  
A list of column identifiers (either symbolic names or integer indices)
      specifying which data columns are displayed and the order in which they
      appear, or the string #all. If set to #all (the default),
      all columns are shown in the order given.






Command-Line Name:	-height
Database Name:	height
Database Class:	Height



  

  
Specifies the number of rows which should be visible. Note: the requested
      width is determined from the sum of the column widths.






Command-Line Name:	-selectmode
Database Name:	selectMode
Database Class:	SelectMode



  

  
Controls how the built-in class bindings manage the selection. One of
      extended, browse, or none.






If set to extended (the default), multiple items may be
    selected. If browse, only a single item will be selected at a time.
    If none, the selection will not be changed.


Note that application code and tag bindings can set the selection
    however they wish, regardless of the value of -selectmode.






Command-Line Name:	-show
Database Name:	show
Database Class:	Show



  

  
A list containing zero or more of the following values, specifying which
      elements of the tree to display.







  
tree

  
Display tree labels in column #0.

  

  
Display the heading row.




The default is tree headings, i.e., show all elements.


NOTE: Column #0 always refers to the tree column, even if
    -show tree is not specified.











  

  
Returns the bounding box (relative to the treeview widget's window) of the
      specified item in the form x y width height. If
      column is specified, returns the bounding box of that cell. If the
      item is not visible (i.e., if it is a descendant of a closed item
      or is scrolled offscreen), returns the empty list.

  

  
Returns the current value of the specified option; see
      ttk::widget(3tk).

  

  
If newchildren is not specified, returns the list of children
      belonging to item.






If newchildren is specified, replaces item's child
    list with newchildren. Items in the old child list not present in the
    new child list are detached from the tree. None of the items in
    newchildren may be an ancestor of item.





  

  
Query or modify the options for the specified column. If no
      -option is specified, returns a dictionary of option/value pairs.
      If a single -option is specified, returns the value of that option.
      Otherwise, the options are updated with the specified values. The
      following options may be set on each column:







  

  
The column name. This is a read-only option. For example, [$pathname
      column #n -id] returns the data column associated
      with display column #n.

  

  
Specifies how the text in this column should be aligned with respect to
      the cell. One of n, ne, e, se, s,
      sw, w, nw, or center.

  

  
The minimum width of the column in pixels. The treeview widget will not
      make the column any smaller than -minwidth when the widget is
      resized or the user drags a column separator.

  

  
Specifies whether or not the column's width should be adjusted when the
      widget is resized.

  

  
The width of the column in pixels. Default is something reasonable,
      probably 200 or so.




Use pathname column #0 to configure the tree column.





  

  
Modify or query widget options; see ttk::widget(3tk).

  

  
Deletes each of the items in itemList and all of their descendants.
      The root item may not be deleted. See also: detach.

  

  
Unlinks all of the specified items in itemList from the tree. The
      items and all of their descendants are still present and may be reinserted
      at another point in the tree with the move operation, but will not
      be displayed until that is done. The root item may not be detached. See
      also: delete.

  

  
Returns 1 if the specified item is present in the tree, 0
      otherwise.

  

  
If item is specified, sets the focus item to item.
      Otherwise, returns the current focus item, or {} if there is
    none.

  

  
Query or modify the heading options for the specified column. Valid
      options are:







  

  
The text to display in the column heading.

  

  
Specifies an image to display to the right of the column heading.

  

  
Specifies how the heading text should be aligned. One of the standard Tk
      anchor values.

  

  
A script to evaluate when the heading label is pressed.




Use pathname heading #0 to configure the tree column
    heading.





  

  
Returns a description of the specified component under the point
      given by x and y, or the empty string if no such
      component is present at that position. The following subcommands
      are supported:







  

  




Returns one of:


  

  
Tree heading area; use [pathname identify column x y] to
      determine the heading number.

  

  
Space between two column headings; [pathname identify column x
      y] will return the display column identifier of the heading to left of
      the separator.

  

  
The tree area.

  

  
A data cell.





pathname identify item x y Returns the item ID of the item
  at position y.


  

  
Returns the data column identifier of the cell at position x. The
      tree column has ID #0.

  

  
The element at position x,y.

  

  
Obsolescent synonym for pathname identify item.




See COLUMN IDENTIFIERS for a discussion of display columns
    and data columns.





  

  
Returns the integer index of item within its parent's list of
      children.

  

  
Creates a new item. parent is the item ID of the parent item, or
      the empty string {} to create a new top-level item. index is
      an integer, or the value end, specifying where in the list of
      parent's children to insert the new item. If index is less
      than or equal to zero, the new node is inserted at the beginning; if
      index is greater than or equal to the current number of children,
      it is inserted at the end. If -id is specified, it is used as the
      item identifier; id must not already exist in the tree. Otherwise,
      a new unique identifier is generated.






pathname insert returns the item identifier of the
    newly created item. See ITEM OPTIONS for the list of available
    options.





  

  
Test the widget state; see ttk::widget(3tk).

  

  
Query or modify the options for the specified item. If no
      -option is specified, returns a dictionary of option/value pairs.
      If a single -option is specified, returns the value of that option.
      Otherwise, the item's options are updated with the specified values. See
      ITEM OPTIONS for the list of available options.

  

  
Moves item to position index in parent's list of
      children. It is illegal to move an item under one of its descendants.






If index is less than or equal to zero, item is
    moved to the beginning; if greater than or equal to the number of children,
    it is moved to the end.





  

  
Returns the identifier of item's next sibling, or {} if
      item is the last child of its parent.

  

  
Returns the ID of the parent of item, or {} if item
      is at the top level of the hierarchy.

  

  
Returns the identifier of item's previous sibling, or {} if
      item is the first child of its parent.

  

  
Ensure that item is visible: sets all of item's ancestors to
      -open true, and scrolls the widget if necessary so that item
      is within the visible portion of the tree.

  

  
If selop is not specified, returns the list of selected items.
      Otherwise, selop is one of the following:







  

  
itemList becomes the new selection.

  

  
Add itemList to the selection

  

  
Remove itemList from the selection

  

  
Toggle the selection state of each item in itemList.







  

  
With one argument, returns a dictionary of column/value pairs for the
      specified item. With two arguments, returns the current value of
      the specified column. With three arguments, sets the value of
      column column in item item to the specified value.
      See also COLUMN IDENTIFIERS.

  

  
Modify or query the widget state; see ttk::widget(3tk).

  

  







  

  
Add a Tk binding script for the event sequence sequence to the tag
      tagName. When an X event is delivered to an item, binding scripts
      for each of the item's -tags are evaluated in order as per
      bindtags(3tk).






<KeyPress>, <KeyRelease>, and virtual
    events are sent to the focus item. <ButtonPress>,
    <ButtonRelease>, and <Motion> events are sent to
    the item under the mouse pointer. No other event types are supported.


The binding script undergoes %-substitutions before
    evaluation; see bind(3tk) for details.





  

  
Query or modify the options for the specified tagName. If one or
      more option/value pairs are specified, sets the value of those
      options for the specified tag. If a single option is specified,
      returns the value of that option (or the empty string if the option has
      not been specified for tagName). With no additional arguments,
      returns a dictionary of the option settings for tagName. See TAG
      OPTIONS for the list of available options.

  

  
If item is specified, returns 1 or 0 depending on whether the
      specified item has the named tag. Otherwise, returns a list of all items
      which have the specified tag.

  

  
Returns a list of all tags used by the widget.

  

  
Adds the specified tag to each of the listed items. If
      tag is already present for a particular item, then the -tags
      for that item are unchanged.

  

  
Removes the specified tag from each of the listed items. If
      items is omitted, removes tag from each item in the tree. If
      tag is not present for a particular item, then the -tags for
      that item are unchanged.







  

  
Standard command for horizontal scrolling; see widget(3tk).

  

  
Standard command for vertical scrolling; see ttk::widget(3tk).










The following item options may be specified for items in the
    insert and item widget commands.




Command-Line Name:	-text
Database Name:	text
Database Class:	Text



  

  
The textual label to display for the item.






Command-Line Name:	-image
Database Name:	image
Database Class:	Image



  

  
A Tk image, displayed to the left of the label.






Command-Line Name:	-values
Database Name:	values
Database Class:	Values



  

  
The list of values associated with the item.






Each item should have the same number of values as the
    -columns widget option. If there are fewer values than columns, the
    remaining values are assumed empty. If there are more values than columns,
    the extra values are ignored.






Command-Line Name:	-open
Database Name:	open
Database Class:	Open



  

  
A boolean value indicating whether the item's children should be displayed
      (-open true) or hidden (-open false).






Command-Line Name:	-tags
Database Name:	tags
Database Class:	Tags



  

  
A list of tags associated with this item.










The following options may be specified on tags:



  

  
Specifies the text foreground color.

  

  
Specifies the cell or item background color.

  

  
Specifies the font to use when drawing text.

  

  
Specifies the item image, in case the item's -image option is
      empty.










Column identifiers take any of the following forms:


    
  
  • A symbolic name from the list of -columns.
    • 
  
  • An integer n, specifying the nth data column.
    • 
  
  • A string of the form #n, where n is an integer,
      specifying the nth display column.
    • 



NOTE: Item -values may be displayed in a different
    order than the order in which they are stored.


NOTE: Column #0 always refers to the tree column, even if
    -show tree is not specified.


A data column number is an index into an item's
    -values list; a display column number is the column number in
    the tree where the values are displayed. Tree labels are displayed in column
    #0. If -displaycolumns is not set, then data column n is
    displayed in display column #n+1. Again, column #0 always
    refers to the tree column.








The treeview widget generates the following virtual events.



  
<<TreeviewSelect>>

  
Generated whenever the selection changes.

  
<<TreeviewOpen>>

  
Generated just before setting the focus item to -open true.

  
<<TreeviewClose>>

  
Generated just after setting the focus item to -open false.




The focus and selection widget commands can be used
    to determine the affected item or items.








The class name for a ttk::treeview is Treeview. The
    treeview header class name is Heading. The treeview item class name
    is Item. The treeview cell class name is Cell.


Dynamic states: disabled, selected.


Treeview styling options configurable with
    ttk::style are:


-background color
  

  -fieldbackground color
  

  -font font
  

  -foreground color
  

  -rowheight amount


The -rowheight value is not corrected by the tk
  scaling value or by the configured font size and must always be set. Also
  make sure that the -rowheight is large enough to contain any images.

To adjust the -rowheight for the Treeview style, use the
    following code after tk scaling has been applied. Note that even if
    you do not support or change tk scaling in your program, your users
    may have it set in their .wishrc.








ttk::style configure Treeview \


     -rowheight [expr {[font metrics font -linespace] + 2}]




Heading styling options configurable with ttk::style
    are:


-background color
  

  -font font
  

  -relief relief


Item styling options configurable with ttk::style
    are:


-foreground color
  

  -indicatormargins padding
  

  -indicatorsize amount
  

  -padding padding


Cell styling options configurable with ttk::style
    are:


-padding padding


Some options are only available for specific themes.


See the ttk::style manual page for information on how to
    configure ttk styles.








ttk::widget(3tk), listbox(3tk), image(3tk), bind(3tk)







  

    8.5
    Tk