_________________________________________________________________
table - Create and manipulate tables
table pathName ?options?
See the options manual entry for details on the standard options.
Command-Line Name:-autoclear
Database Name: autoClear
Database Class: AutoClear
A boolean value which specifies whether the first keypress in a cell will delete whatever text was previously there. Defaults to 0.
Command-Line Name:-bordercursor
Database Name: borderCursor
Database Class: Cursor
Specifies the name of the cursor to show when over borders, a visual indication that interactive resizing is allowed (it is thus affect by the value of -resizeborders). Defaults to crosshair.
Command-Line Name:-borderwidth or -bd
Database Name: borderWidth
Database Class: BorderWidth
Specifies a non-negative pixel value or list of values indicating the width of the 3-D border to draw on interior table cells (if such a border is being drawn; the relief option typically determines this). If one value is specified, a rectangle of this width will be drawn. If two values are speci- fied, then only the left and right edges of the cell will have borders. If four values are speci- fied, then the values correspond to the {left right top bottom} edges. This can be overridden by the a tag's borderwidth option. It can also be affected by the defined -drawmode for the table. Each value in the list must have one of the forms acceptable to Tk_GetPixels.
Command-Line Name:-browsecommand or -browsecmd
Database Name: browseCommand
Database Class: BrowseCommand
Specifies a command which will be evaluated anytime the active cell changes. It uses the %-substition model described in COMMAND SUBSTITUTION below.
Command-Line Name:-cache
Database Name: cache
Database Class: Cache
A boolean value that specifies whether an internal cache of the table contents should be kept. This greatly enhances speed performance when used with -command but uses extra memory. Can maintain state when both -command and -variable are empty. The cache is automatically flushed whenever the value of -cache or -variable changes, otherwise you have to explicitly call clear on it. Defaults to off.
Command-Line Name:-colorigin
Database Name: colOrigin
Database Class: Origin
Specifies what column index to interpret as the leftmost column in the table. This value is used for user indices in the table. Defaults to 0.
Command-Line Name:-cols
Database Name: cols
Database Class: Cols
Number of cols in the table. Defaults to 10.
Command-Line Name:-colseparator
Database Name: colSeparator
Database Class: Separator
Specifies a separator character that will be inter- preted as the column separator when cutting or pasting data in a table. By default, columns are separated as elements of a tcl list.
Command-Line Name:-colstretchmode
Database Name: colStretchMode
Database Class: StretchMode
Specifies one of the following stretch modes for columns to fill extra allocated window space:
none Columns will not stretch to fill the assigned window space. If the columns are too narrow, there will be a blank space at the right of the table. This is the default.
unset Only columns that do not have a specific width set will be stretched.
last The last column will be stretched to fill the window space allocated to the table.
fill (only valid for -rowstretch currently) The table will get more or less columns according to the window space allocated to the table. This mode has numerous quirks and may disappear in the future.
Command-Line Name:-coltagcommand
Database Name: colTagCommand
Database Class: TagCommand
Provides the name of a procedure that will be eval- uated by the widget to determine the tag to be used for a given column. When displaying a cell, the table widget will first check to see if a tag has been defined using the tag col widget method. If no tag is found, it will evaluate the named proce- dure passing the column number in question as the sole argument. The procedure is expected to return the name of a tag to use, or a null string. Errors occuring during the evaluation of the procedure, or the return of an invalid tag name are silently ignored.
Command-Line Name:-colwidth
Database Name: colWidth
Database Class: ColWidth
Default column width, interpreted as characters in the default font when the number is positive, or pixels if it is negative. Defaults to 10.
Command-Line Name:-command
Database Name: command
Database Class: Command
Specified a command to use as a procedural inter- face to cell values. If -usecommand is true, this command will be used instead of any reference to the -variable array. When retrieving cell values, the return value of the command is used as the value for the cell. It uses the %-substition model described in COMMAND SUBSTITUTION below.
Command-Line Name:-drawmode
Database Name: drawMode
Database Class: DrawMode
Sets the table drawing mode to one of the following options:
slow The table is drawn to an offscreen pixmap using the Tk bordering functions (doublebuffering). This means there will be no flashing, but this mode is slow for larger tables.
compatible
The table is drawn directly to the screen
using the Tk border functions. It is
faster, but the screen may flash on update.
This is the default.
fast The table is drawn directly to the screen and the borders are done with fast X calls, so they are always one pixel wide only. As a side effect, it restricts -borderwidth to a range of 0 or 1. This mode provides best performance for large tables, but can flash on redraw and is not 100% Tk compatible on the border mode.
single The table is drawn to the screen as in fast mode, but only single pixel lines are drawn (not square borders).
Command-Line Name:-ellipsis
Database Name: ellipsis
Database Class: Ellipsis
This specifies a string to display at the end of a line that would be clipped by its cell, like ``...''. An ellipsis will be displayed only on non-wrapping, non-multiline cells that would be clipped. The ellipsis will display on the left for east anchored cells, otherwise it displays on the right. Defaults to (no ellipsis).
Command-Line Name:-flashmode
Database Name: flashMode
Database Class: FlashMode
A boolean value which specifies whether cells should flash when their value changes. The table tag flash will be applied to these cells for the duration specified by -flashtime. Defaults to 0.
Command-Line Name:-flashtime
Database Name: flashTime
Database Class: FlashTime
The amount of time, in 1/4 second increments, for which a cell should flash when its value has changed. -flashmode must be on. Defaults to 2.
Command-Line Name:-height
Database Name: height
Database Class: Height
Specifies the desired height for the window, in rows. If zero or less, then the desired height for the window is made just large enough to hold all the rows in the table. The height can be further limited by -maxheight.
Command-Line Name:-invertselected
Database Name: invertSelected
Database Class: InvertSelected
Specifies whether the foreground and background of an item should simply have their values swapped instead of merging the sel tag options when the cell is selected. Defaults to 0 (merge sel tag).
Command-Line Name:-ipadx
Database Name: ipadX
Database Class: Pad
A pixel value specifying the internal offset X padding for text in a cell. This value does not grow the size of the cell, it just causes the text to be drawn further from the cell border. It only affects one side (depending on anchor). Defaults to 0. See -padx for an alternate padding style.
Command-Line Name:-ipady
Database Name: ipadY
Database Class: Pad
A pixel value specifying the internal offset Y padding for text in a cell. This value does not grow the size of the cell, it just causes the text to be drawn further from the cell border. It only affects one side (depending on anchor). Defaults to 0. See -pady for an alternate padding style.
Command-Line Name:-justify
Database Name: justify
Database Class: Justify
How to justify multi-line text in a cell. It must be one of left, right, or center. Defaults to left.
Command-Line Name:-maxheight
Database Name: maxHeight
Database Class: MaxHeight
The max height in pixels that the window will request. Defaults to 600.
Command-Line Name:-maxwidth
Database Name: maxWidth
Database Class: MaxWidth
The max width in pixels that the window will request. Defaults to 800.
Command-Line Name:-multiline
Database Name: multiline
Database Class: Multiline
Specifies the default setting for the multiline tag option. Defaults to 1.
Command-Line Name:-padx
Database Name: padX
Database Class: Pad
A pixel value specifying the offset X padding for a cell. This value causes the default size of the cell to increase by two times the value (one for each side), unless a specific pixel size is chosen for the cell with the width command. This will force an empty area on the left and right of each cell edge. This padding affects all types of data in the cell. Defaults to 0. See -ipadx for an alternate padding style.
Command-Line Name:-pady
Database Name: padY
Database Class: Pad
A pixel value specifying the offset Y padding for a cell. This value causes the default size of the cell to increase by two times the value (one for each side), unless a specific pixel size is chosen for the cell with the height command. This will force an empty area on the top and bottom of each cell edge. This padding affects all types of data in the cell. Defaults to 0. See -ipadx for an alternate padding style.
Command-Line Name:-resizeborders
Database Name: resizeBorders
Database Class: ResizeBorders
Specifies what kind of interactive border resizing to allow, must be one of row, col, both (default) or none.
Command-Line Name:-rowheight
Database Name: rowHeight
Database Class: RowHeight
Default row height, interpreted as lines in the default font when the number is positive, or pixels if it is negative. Defaults to 1.
Command-Line Name:-roworigin
Database Name: rowOrigin
Database Class: Origin
Specifies what row index to interpret as the top- most row in the table. This value is used for user indices in the table. Defaults to 0.
Command-Line Name:-rows
Database Name: rows
Database Class: Rows
Number of rows in the table. Defaults to 10.
Command-Line Name:-rowseparator
Database Name: rowSeparator
Database Class: Separator
Specifies a separator character that will be inter- preted as the row separator when cutting or pasting data in a table. By default, rows are separated as tcl lists.
Command-Line Name:-rowstretchmode
Database Name: rowStretchMode
Database Class: StretchMode
Specifies the stretch modes for rows to fill extra allocated window space. See -colstretchmode for valid options.
Command-Line Name:-rowtagcommand
Database Name: rowTagCommand
Database Class: TagCommand
Provides the name of a procedure that can evaluated by the widget to determine the tag to be used for a given row. The procedure must be defined by the user to accept a single argument (the row number), and return a tag name or null string. This oper- ates in a similar manner as -coltagcommand, except that it applies to row tags.
Command-Line Name:-selectioncommand or -selcmd
Database Name: selectionCommand
Database Class: SelectionCommand
Specifies a command to evaluate when the selection is retrieved from a table via the selection mecha- nism (ie: evaluating selection get"). The return value from this command will become the string passed on by the selection mechanism. It uses the %-substition model described in COMMAND SUBSTITU- TION below. If an error occurs, a Tcl background error is generated and nothing is returned.
Command-Line Name:-selectmode
Database Name: selectMode
Database Class: SelectMode
Specifies one of several styles for manipulating the selection. The value of the option may be arbitrary, but the default bindings expect it to be either single, browse, multiple, or extended; the default value is browse. These styles are like those for the Tk listbox, except expanded for 2 dimensions.
Command-Line Name:-selecttitle
Database Name: selectTitles
Database Class: SelectTitles
Specifies whether title cells should be allowed in the selection. Defaults to 0 (disallowed).
Command-Line Name:-selecttype
Database Name: selectType
Database Class: SelectType
Specifies one of several types of selection for the table. The value of the option may be one of row, col, cell, or both (meaning row && col); the default value is cell. These types define whether an entire row/col is affected when a cell's selec- tion is changed (set or clear).
Command-Line Name:-sparsearray
Database Name: sparseArray
Database Class: SparseArray
A boolean value that specifies whether an associ- ated Tcl array should be kept as a sparse array (1, the default) or as a full array (0). If true, then cell values that are empty will be deleted from the array (taking less memory). If false, then all values in the array will be maintained.
Command-Line Name:-state
Database Name: state
Database Class: State
Command-Line Name:-titlecols
Database Name: titleCols
Database Class: TitleCols
Number of columns to use as a title area. Defaults to 0.
Command-Line Name:-titlerows
Database Name: titleRows
Database Class: TitleRows
Number of rows to use as a title area. Defaults to 0.
Command-Line Name:-usecommand
Database Name: useCommand
Database Class: UseCommand
A boolean value which specifies whether to use the command option. This value sets itself to zero if command is used and returns an error. Defaults to 1 (will use command if specified).
Command-Line Name:-validate
Database Name: validate
Database Class: Validate
A boolean specifying whether validation should occur for the active buffer. Defaults to 0.
Command-Line Name:-validatecommand or -vcmd
Database Name: validateCommand
Database Class: ValidateCommand
Specifies a command to execute when the active cell is edited. This command is expected to return a Tcl boolean. If it returns true, then it is assumed the new value is OK, otherwise the new value is rejected (the edition will not take place). Errors in this command are handled in the background. It uses the %-substition model described in COMMAND SUBSTITUTION below.
Command-Line Name:-variable
Database Name: variable
Database Class: Variable
Global Tcl array variable to attach to the table's C array. It will be created if it doesn't already exist or is a simple variable. Keys used by the table in the array are of the form row,col for cells and the special key active which contains the value of the active cell buffer. The Tcl array is managed as a sparse array (the table doesn't require all valid indices have values). No stored value for an index is equivalent to the empty string, and clearing a cell will remove that index from the Tcl array, unless the -sparsearray options is set to 0.
Command-Line Name:-width
Database Name: width
Database Class: Width
Specifies the desired width for the window, in columns. If zero or less, then the desired width for the window is made just large enough to hold all the columns in the table. The width can be further limited by -maxwidth.
Command-Line Name:-wrap
Database Name: wrap
Database Class: Wrap
Specifies the default wrap value for tags.
Defaults to 0.
_________________________________________________________________
The table command creates a 2-dimensional grid of cells. The table can use a Tcl array variable or Tcl command for data storage and retrieval, as well as optionally cache data in memory for speed. One of these data sources must be configured before any data is retained by the table. The widget has an active cell, the contents of which can be edited (when the state is normal). The widget supports a default style for the cells and also multiple tags, which can be used to change the style of a row, column or cell (see TAGS for details). A cell flash can be set up so that changed cells will change color for a specified amount of time ("blink"). Cells can have embedded images or windows, as described in TAGS and EMBEDDED WINDOWS" respectively.
One or more cells may be selected as described below. If a table is exporting its selection (see -exportselection option), then it will observe the standard X11 protocols for handling the selection. See THE SELECTION for details.
It is not necessary for all the cells to be displayed in the table window at once; commands described below may be used to change the view in the window. Tables allow scrolling in both directions using the standard -xscroll*- command and -yscrollcommand options. They also support scanning, as described below.
In order to obtain good performance, the table widget sup- ports multiple drawing modes, two of which are fully Tk compatible.
When the table command is loaded into an interpreter, a built-in Tcl command, tkTableInit, is evaluated. This will search for the appropriate table binding init file to load. The directories searched are those in $tcl_pkgPath, both with Tktable(version) appended and without, $tk_library and [pwd] (the current directory). You can also define an $env(TK_TABLE_LIBRARY) to head this search list. By default, the file searched for is called tkTable.tcl, but this can be overridden by setting $env(TK_TABLE_LIBRARY_FILE).
This entire init script can be overridden by providing your own tkTableInit procedure before the library is loaded. Otherwise, the aforementioned env(TK_TABLE_LIBRARY) variable will be set with the direc- tory in which $env(TK_TABLE_LIBRARY_FILE) was found.
Many of the widget commands for tables take one or more indices as arguments. An index specifies a particular cell of the table, in any of the following ways:
number,number
Specifies the cell as a numerical index of
row,col which corresponds to the index of the
associated Tcl array, where -roworigin,-colo*-
rigin corresponds to the first cell in the
table (0,0 by default). The values for row
and column will be constrained to actual val-
ues in the table, which means a valid cell is
always found.
bottomright Indicates the bottom-rightmost cell visible in the table.
In the widget command descriptions below, arguments named index, first, and last always contain text indices in one of the above forms.
A tag is a textual string that is associated with zero or more rows, columns or cells in a table. Tags may contain arbitrary characters, but it is probably best to avoid using names which look like indices to reduce coding con- fusion. A tag can apply to an entire row or column, or just a single cell. There are several permanent tags in each table that can be configured by the user and will determine the attributes for special cells:
Tags control the way cells are displayed on the screen. Where appropriate, the default for displaying cells is determined by the options for the table widget. However, display options may be associated with individual tags using the ``pathName tag configure'' widget command. If a cell, row or column has been tagged, then the display options associated with the tag override the default dis- play style. The following options are currently supported for tags:
A priority order is defined among tags based on creation order (first created tag has highest default priority), and this order is used in implementing some of the tag-related functions described below. When a cell is displayed, its properties are determined by the tags which are assigned to it. The priority of a tag can be modified by the ``pathName tag lower'' and ``pathName tag raise'' widget commands.
If a cell has several tags associated with it that define the same display options (eg - a title cell with specific row and cell tags), then the options of the highest prior- ity tag are used. If a particular display option hasn't been specified for a particular tag, or if it is specified as an empty string, then that option will not be used; the next-highest-priority tag's option will be used instead. If no tag specifies a particular display option, then the default style for the widget will be used.
Images are used for display purposes only. Editing in that cell will still be enabled and any querying of the cell will show the text value of the cell, regardless of the value of -showtext.
There may be any number of embedded windows in a table widget (one per cell), and any widget may be used as an embedded window (subject to the usual rules for geometry management, which require the table window to be the par- ent of the embedded window or a descendant of its parent). The embedded window's position on the screen will be updated as the table is modified or scrolled, and it will be mapped and unmapped as it moves into and out of the visible area of the table widget. Each embedded window occupies one cell's worth of space in the table widget, and it is referred to by the index of the cell in the table. Windows associated with the table widget are destroyed when the table widget is destroyed.
Windows are used for display purposes only. A value still exists for that cell, but will not be shown unless the window is deleted in some way. If the window is destroyed or lost by the table widget to another geometry manager, then any data associated with it is lost (the cell it occupied will no longer appear in window names).
When an embedded window is added to a table widget with the window configure widget command, several configuration options may be associated with it. These options may be modified with later calls to the window configure widget command. The following options are currently supported:
Table selections are available as type STRING. By default, the value of the selection will be the values of the selected cells in nested Tcl list form where each row is a list and each column is an element of a row list. You can change the way this value is interpreted by set- ting the -rowseparator and -colseparator options. For example, default Excel format would be to set -rowsepara*- tor to \n and -colseparator to \t". Changing these values affects both how the table sends out the selection and reads in pasted data, ensuring that the table should always be able to cut and paste to itself. It is possible to change how pastes are handled by editing the table library procedure tk_tablePasteHandler. This might be necessary if -selectioncommand is set.
Individual cells can span multiple rows and/or columns. This is done via the spans command (see below for exact arguments). Cells in the title area that span are not permitted to span beyond the title area, and will be con- strained accordingly. If the title area shrinks during a configure, sanity checking will occur to ensure the above. You may set spans on regular cells that extend beyond the defined row/col area. These spans will not be con- strained, so that when the defined row/col area expands, the span will expand with it.
When setting a span, checks are made as to whether the span would overlap an already spanning or hidden cell. This is an error and it not allowed. Spans can affect the overall speed of table drawing, although not signifi- cantly. If spans are not used, then there is no perfor- mance loss.
Cells hidden by spanning cells still have valid data. This will be seen during cut and paste operations that involve hidden cells, or through direct access by a com- mand like get or set.
The drawing properties of spanning cells apply to only the visual area of the cell. For example, if a cell is center justified over 5 columns, then when viewing any portion of those columns, it will appear centered in the visible area. The non-visible column area will not be considered in the centering calculations.
The various option based commands that the table supports all support the familiar Tk %-substitution model (see bind for more details). The following %-sequences are recog- nized and substituted by the table widget:
%c For SelectionCommand, it is the maximum number of columns in any row in the selection. Otherwise it is the column of the triggered cell.
%s For ValidateCommand, it is the current value of the cell being validated. For SelectionCommand, it is the default value of the selection. For BrowseCom*- mand, it is the index of the last active cell. For Command, it is empty for reads (get) and the current value of the cell for writes (set).
%W The pathname to the window for which the command was generated.
The table command creates a new Tcl command whose name is
pathName. This command may be used to invoke various
operations on the widget. It has the following general
form:
pathName option ?arg arg ...?
Option and the args determine the exact behavior of the
command.
The following commands are possible for table widgets:
pathName activate index
Sets the active cell to the one indicated by index.
pathName bbox first ?last?
It returns the bounding box for the specified cell
(range) as a 4-tuple of x, y, width and height in
pixels. It clips the box to the visible portion,
if any, otherwise an empty string is returned.
pathName border option args
This command is a voodoo hack to implement border
sizing for tables. This is normally called through
bindings, with the following as valid options:
pathName border mark x y ?row|col? Records x and y and the row and/or column border under that point in the table window, if any; used in conjunction with later bor*- der dragto commands. Typically this command is associated with a mouse button press in the widget. If row or col is not specified, it returns a tuple of both border indices (an empty item means no border). Otherwise, just the specified item is returned.
pathName border dragto x y
This command computes the difference between
its x and y arguments and the x and y argu-
ments to the last border mark command for
the widget. It then adjusts the previously
marked border by the difference. This com-
mand is typically associated with mouse
motion events in the widget, to produce the
effect of interactive border resizing.
pathName cget option
Returns the current value of the configuration
option given by option. Option may have any of the
values accepted by the table command.
pathName clear option ?first? ?last?
This command is a convenience routine to clear cer-
tain state information managed by the table. first
and last represent valid table indices. If neither
are specified, then the command operates on the
whole table. The following options are recognized:
pathName clear cache ?first? ?last? Clears the specified section of the cache, if the table has been keeping one.
pathName clear sizes ?first? ?last? Clears the specified row and column areas of specific height/width dimensions. When just one index is specified, for example 2,0, that is interpreted as row 2 and column 0.
pathName clear tags ?first? ?last? Clears the specified area of tags (all row, column and cell tags).
pathName clear all ?first? ?last? Performs all of the above clear functions on the specified area.
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 available options for path- Name (see Tk_ConfigureInfo for information on the format of this list). If option is specified with no value, then the command returns a list describ- ing the one named option (this list will be identi- cal 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 table command.
pathName curselection ?value?
With no arguments, it returns the sorted indices of
the currently selected cells. Otherwise it sets
all the selected cells to the given value. The set
has no effect if there is no associated Tcl array
or the state is disabled.
pathName curvalue ?value?
If no value is given, the value of the cell being
edited (indexed by active) is returned, else it is
set to the given value.
pathName delete option arg ?arg?
This command is used to delete various things in a
table. It has several forms, depending on the
option:
pathName delete active index ?index? Deletes text from the active cell. If only one index is given, it deletes the character after that index, otherwise it deletes from the first index to the second. index can be a number, insert or end.
pathName delete cols ?switches? index ?count? Deletes count cols starting at (and includ- ing) col index. The index will be con- strained to the limits of the tables. If count is negative, it deletes cols to the left. Otherwise it deletes cols to the right. count defaults to 1 (meaning just the column specified). At the moment, spans are not adjusted with this action. Optional switches are:
pathName delete rows ?switches? index ?count? Deletes count rows starting at (and includ- ing) row index. If count is negative, it deletes rows going up. Otherwise it deletes rows going down. The selection will be cleared. The switches are the same as those for column deletion.
pathName get first ?last?
Returns the value of the cells specified by the
table indices first and (optionally) last in a
list.
pathName height ?row? ?value row value ...? If no row is specified, returns a list describing all rows for which a height has been set. If row is specified with no value, it prints out the height of that row in characters (positive number) or pixels (negative number). If one or more row-value pairs are specified, then it sets each row to be that height in lines (positive number) or pixels (negative number). If value is default, then the row uses the default height, specified by -rowheight.
pathName hidden ?index? ?index ...?
When called without args, it returns all the hidden
cells (those cells covered by a spanning cell). If
one index is specified, it returns the spanning
cell covering that index, if any. If multiple
indices are specified, it returns 1 if all indices
are hidden cells, 0 otherwise.
pathName icursor ?arg?
With no arguments, prints out the location of the
insertion cursor in the active cell. With one
argument, sets the cursor to that point in the
string. 0 is before the first character, you can
also use insert or end for the current insertion
point or the end of the text. If there is no
active cell, or the cell or table is disabled, this
will return -1.
pathName index index ?row|col?
Returns the integer cell coordinate that corre-
sponds to index in the form row,col. If row or col
is specified, then only the row or column index is
returned.
pathName insert option arg arg
This command is used to into various things into a
table. It has several forms, depending on the
option:
pathName insert active index value The value is a text string which is inserted at the index postion of the active cell. The cursor is then positioned after the new text. index can be a number, insert or end.
pathName insert cols ?switches? index ?count? Inserts count cols starting at col index. If count is negative, it inserts before the specified col. Otherwise it inserts after the specified col. The selection will be cleared. The switches are the same as those for column deletion.
pathName insert rows ?switches? index ?count? Inserts count rows starting at row index. If count is negative, it inserts before the specified row. Otherwise it inserts after the specified row. The selection will be cleared. The switches are the same as those for column deletion.
pathName reread
Rereads the old contents of the cell back into the
editing buffer. Useful for a key binding when
<Escape> is pressed to abort the edit (a default
binding).
pathName scan option args
This command is used to implement scanning on
tables. It has two forms, depending on option:
pathName scan mark x y
Records x and y and the current view in the
table window; used in conjunction with
later scan dragto commands. Typically this
command is associated with a mouse button
press in the widget. It returns an empty
string.
pathName scan dragto x y.
This command computes the difference between
its x and y arguments and the x and y argu-
ments to the last scan mark command for the
widget. It then adjusts the view by 5 times
the difference in coordinates. This command
is typically associated with mouse motion
events in the widget, to produce the effect
of dragging the list at high speed through
the window. The return value is an empty
string.
pathName see index
Adjust the view in the table so that the cell given
by index is positioned as the cell one off from top
left (excluding title rows and columns) if the cell
is not currently visible on the screen. The actual
cell may be different to keep the screen full.
pathName selection option arg
This command is used to adjust the selection within
a table. It has several forms, depending on
option:
pathName selection anchor index
Sets the selection anchor to the cell given
by index. The selection anchor is the end
of the selection that is fixed while drag-
ging out a selection with the mouse. The
index anchor may be used to refer to the
anchor cell.
pathName selection clear first ?last? If any of the cells between first and last (inclusive) are selected, they are dese- lected. The selection state is not changed for cells outside this range. first may be specified as all to remove the selection from all cells.
pathName selection includes index Returns 1 if the cell indicated by index is currently selected, 0 if it isn't.
pathName selection set first ?last? Selects all of the cells in the range between first and last, inclusive, without affecting the selection state of cells out- side that range.
pathName set ?row|col? index ?value? ?index value ...? Sets the specified index to the associated value. Table validation will not be triggered via this method. If row or col precedes the list of index/value pairs, then the value is assumed to be a Tcl list whose values will be split and set into the subsequent columns (if row is specified) or rows (for col). For example, set row 2,3 {2,3 2,4 2,5} will set 3 cells, from 2,3 to 2,5. The set- ting of cells is silently bounded by the known table dimensions.
pathName spans ?index? ?rows,cols index rows,cols ...? This command is used to manipulate row/col spans. When called with no arguments, all known spans are returned as a list of tuples of the form {index span}. When called with only the index, the span for that index only is returned, if any. Otherwise an even number of index rows,cols pairs are used to set spans. A span starts at the index and contin- ues for the specified number of rows and cols. Negative spans are not supported. A span of 0,0 unsets any span on that cell. See EXAMPLES for more info.
pathName tag option ?arg arg ...?
This command is used to manipulate tags. The exact
behavior of the command depends on the option argu-
ment that follows the tag argument. cget, cell,
and row|col complain about unknown tag names. The
following forms of the command are currently sup-
ported:
pathName tag cell tagName ?index ...? With no arguments, prints out the list of cells that use the tag. Otherwise it sets the specified cells to use the named tag, replacing any tag that may have been set using this method before. If tagName is {}, the cells are reset to the default tag. Tags added during -*tagcommand evaluation do not register here. If tagName does not exist, it will be created with the default options.
pathName tag cget tagName option This command returns the current value of the option named option associated with the tag given by tagName. Option may have any of the values accepted by the tag configure widget command.
pathName tag col tagName ?col ...? With no arguments, prints out the list of cols that use the tag. Otherwise it sets the specified columns to use the named tag, replacing any tag that may have been set using this method before. If tagName is {}, the cols are reset to the default tag. Tags added during -coltagcommand evaluation do not register here. If tagName does not exist, it will be created with the default options.
pathName tag configure tagName ?option? ?value?
?option value ...?
This command is similar to the configure
widget command except that it modifies
options associated with the tag given by
tagName instead of modifying options for the
overall table widget. If no option is spec-
ified, the command returns a list describing
all of the available options for tagName
(see Tk_ConfigureInfo for information on the
format of this list). If option is speci-
fied 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 modi-
fies the given option(s) to have the given
value(s) in tagName; in this case the com-
mand returns an empty string. See TAGS
above for details on the options available
for tags.
pathName tag delete tagName
Deletes a tag. No error if the tag does not
exist.
pathName tag exists tagName
Returns 1 if the named tag exists, 0 other-
wise.
pathName tag includes tagName index Returns 1 if the specified index has the named tag, 0 otherwise.
pathName tag lower tagName ?belowThis? Lower the priority of the named tag. If belowThis is not specified, then the tag's priority is lowered to the bottom, otherwise it is lowered to one below belowThis.
pathName tag names ?pattern?
If no pattern is specified, shows the names
of all defined tags. Otherwise the pattern
is used as a glob pattern to show only tags
matching that pattern. Tag names are
returned in priority order (highest priority
tag first).
pathName tag raise tagName ?aboveThis? Raise the priority of the named tag. If aboveThis is not specified, then the tag's priority is raised to the top, otherwise it is raised to one above aboveThis.
pathName tag row tagName ?row ...? With no arguments, prints out the list of rows that use the tag. Otherwise it sets the specified columns to use the named tag, replacing any tag that may have been set using this method before. If tagName is {}, the rows are reset to use the default tag. Tags added during -rowtagcommand evaluation do not register here. If tagName does not exist, it will be created with the default options.
pathName validate index
Explicitly validates the specified index based on
the current -validatecommand and returns 0 or 1
based on whether the cell was validated.
pathName width ?col? ?value col value ...? If no col is specified, returns a list describing all cols for which a width has been set. If col is specified with no value, it prints out the width of that col in characters (positive number) or pixels (negative number). If one or more col-value pairs are specified, then it sets each col to be that width in characters (positive number) or pixels (negative number). If value is default, then the col uses the default width, specified by -colwidth.
pathName window option ?arg arg ...?
This command is used to manipulate embedded win-
dows. The exact behavior of the command depends on
the option argument that follows the window argu-
ment. The following forms of the command are cur-
rently supported:
pathName window cget index option This command returns the current value of the option named option associated with the window given by index. Option may have any of the values accepted by the window config*- ure widget command.
pathName window configure index ?option? ?value?
?option value ...?
This command is similar to the configure
widget command except that it modifies
options associated with the embedded window
given by index instead of modifying options
for the overall table widget. If no option
is specified, the command returns a list
describing all of the available options for
index (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 option(s) to have
the given value(s) in index; in this case
the command returns an empty string. See
EMBEDDED WINDOWS above for details on the
options available for windows.
pathName window delete index ?index ...? Deletes an embedded window from the table. The associated window will also be deleted.
pathName window move indexFrom indexTo Moves an embedded window from one cell to another. If a window already exists in the target cell, it will be deleted.
pathName window names ?pattern?
If no pattern is specified, shows the cells
of all embedded windows. Otherwise the pat-
tern is used as a glob pattern to show only
cells matching that pattern.
pathName xview args
This command is used to query and change the hori-
zontal position of the information in the widget's
window. It can take any of the following forms:
pathName xview
Returns a list containing two elements.
Each element is a real fraction between 0
and 1; together they describe the horizon-
tal span that is visible in the window. For
example, if the first element is .2 and the
second element is .6, 20% of the table's
text is off-screen to the left, the middle
40% is visible in the window, and 40% of the
text is off-screen to the right. These are
the same values passed to scrollbars via the
-xscrollcommand option.
pathName xview index
Adjusts the view in the window so that the
column given by index is displayed at the
left edge of the window.
pathName xview moveto fraction
Adjusts the view in the window so that frac-
tion of the total width of the table text is
off-screen to the left. fraction must be a
fraction between 0 and 1.
pathName xview scroll number what This command shifts the view in the window left or right according to number and what. Number must be an integer. What must be either units or pages or an abbreviation of one of these. If what is units, the view adjusts left or right by number cells on the display; if it is pages then the view adjusts by number screenfuls. If number is negative then cells farther to the left become visible; if it is positive then cells farther to the right become visible.
pathName yview ?args?
This command is used to query and change the verti-
cal position of the text in the widget's window.
It can take any of the following forms:
pathName yview
Returns a list containing two elements, both
of which are real fractions between 0 and 1.
The first element gives the position of the
table element at the top of the window, rel-
ative to the table as a whole (0.5 means it
is halfway through the table, for example).
The second element gives the position of the
table element just after the last one in the
window, relative to the table as a whole.
These are the same values passed to scroll-
bars via the -yscrollcommand option.
pathName yview index
Adjusts the view in the window so that the
row given by index is displayed at the top
of the window.
pathName yview moveto fraction
Adjusts the view in the window so that the
element given by fraction appears at the top
of the window. Fraction is a fraction
between 0 and 1; 0 indicates the first ele-
ment in the table, 0.33 indicates the ele-
ment one-third the way through the table,
and so on.
pathName yview scroll number what This command adjusts the view in the window up or down according to number and what. Number must be an integer. What must be either units or pages. If what is units, the view adjusts up or down by number cells; if it is pages then the view adjusts by num- ber screenfuls. If number is negative then earlier elements become visible; if it is positive then later elements become visible.
The initialization creates class bindings that give the following default behaviour:
[11] Shift-<arrow> extends the selection in that direc- tion.
[12] Control-leftarrow and Control-rightarrow move the insertion cursor within the cell.
[14] Control-backslash clears selection from all the cells.
[15] Backspace deletes the character before the inser- tion cursor in the active cell.
[16] Delete deletes the character after the insertion cursor in the active cell.
[17] Escape rereads the value of the active cell from the specified data source, discarding any edits that have may been performed on the cell.
[18] Control-a moves the insertion cursor to the begin- ning of the active cell.
[19] Control-e moves the insertion cursor to the end of the active cell.
[20] Control-minus and Control-equals decrease and increase the width of the column with the active cell in it.
[21] Moving the mouse while Button-3 (the right button on Windows) is pressed while you are over a border will cause interactive resizing of that row and/or column to occur, based on the value of -resizebor*- ders.
Some bindings may have slightly different behavior depen- dent on the -selectionmode of the widget.
If the widget is disabled using the -state option, then its view can still be adjusted and cells can still be selected, but no insertion cursor will be displayed and no cell modifications will take place.
The behavior of tables can be changed by defining new bindings for individual widgets or by redefining the class bindings. The default bindings are either compiled in or read from a file expected to correspond to: [lindex $tcl_pkgPath 0]/Tktable<version>/tkTable.tcl".
The number of rows and columns or a table widget should not significantly affect the speed of redraw. Recalcula- tion and redraw of table parameters and cells is restricted as much as possible.
The display cell with the insert cursor is redrawn each time the cursor blinks, which causes a steady stream of graphics traffic. Set the -insertofftime option to 0 avoid this. The use of a -command with the table without a cache can cause significant slow-down, as the command is called once for each request of a cell value.
Set the topleft title area to be one spanning cell. This overestimates both row and column span by one, but the command does all the constraining for us. $table span [$table cget -roworigin],[$table cget -colorigin] [$table cget -titlerows],[$table cget -titlecols] Force a table window refresh (useful for the slight chance that a bug in the table is not causing proper refresh): $table configure -padx [$table cget -padx]
table, widget, extension