'\"
'\" Copyright (c) 1990-1994 The Regents of the University of California.
'\" Copyright (c) 1994-1995 Sun Microsystems, Inc.
'\" Copyright (c) 1996-1999 Christian Werner
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\" 
.so man.macros
.TH entry n 8.0 Ck "Ck Built-In Commands"
.BS
'\" Note:  do not modify the .SH NAME line immediately below!
.SH NAME
entry \- Create and manipulate entry widgets
.SH SYNOPSIS
\fBentry\fI \fIpathName \fR?\fIoptions\fR?
.SH "STANDARD OPTIONS"
.LP
.nf
.ta 4c 8c 12c
\fBattributes\fR	\fBjustify\fR	\fBselectForeground\fR	\fBxScrollCommand\fR
\fBbackground\fR	\fBselectAttributes\fR	\fBtakeFocus\fR
\fBforeground\fR	\fBselectBackground\fR	\fBtextVariable\fR
.fi
.LP
See the ``options'' manual entry for details on the standard options.
.SH "WIDGET-SPECIFIC OPTIONS"
.ta 4c
.LP
.nf
Name:	\fBshow\fR
Class:	\fBShow\fR
Command-Line Switch:	\fB\-show\fR
.fi
.IP
If this option is specified, then the true contents of the entry
are not displayed in the window.
Instead, each character in the entry's value will be displayed as
the first character in the value of this option, such as ``*''.
This is useful, for example, if the entry is to be used to enter
a password.
.LP
.nf
Name:	\fBstate\fR
Class:	\fBState\fR
Command-Line Switch:	\fB\-state\fR
.fi
.IP
Specifies one of two states for the entry:  \fBnormal\fR or \fBdisabled\fR.
If the entry is disabled then the value may not be changed using widget
commands and no insertion cursor will be displayed, even if the input focus is
in the widget.
.LP
.nf
Name:	\fBwidth\fR
Class:	\fBWidth\fR
Command-Line Switch:	\fB\-width\fR
.fi
.IP
Specifies an integer value indicating the desired width of the entry window,
in screen columns. If the value is less than or equal to zero, the widget
picks a size just large enough to hold its current text. The default width
is 16.
.BE

.SH DESCRIPTION
.PP
The \fBentry\fR command creates a new window (given by the
\fIpathName\fR argument) and makes it into an entry widget.
Additional options, described above, may be specified on the
command line or in the option database
to configure aspects of the entry such as its colors and attributes.
The \fBentry\fR command returns its
\fIpathName\fR argument.  At the time this command is invoked,
there must not exist a window named \fIpathName\fR, but
\fIpathName\fR's parent must exist.
.PP
An entry is a widget that displays a one-line text string and
allows that string to be edited using widget commands described below, which
are typically bound to keystrokes and mouse actions.
When first created, an entry's string is empty.
A portion of the entry may be selected as described below.
Entries also observe the standard Ck rules for dealing with the
input focus.  When an entry has the input focus it displays an
\fIinsertion cursor\fR to indicate where new characters will be
inserted.
.PP
Entries are capable of displaying strings that are too long to
fit entirely within the widget's window.  In this case, only a
portion of the string will be displayed;  commands described below
may be used to change the view in the window.  Entries use
the standard \fBxScrollCommand\fR mechanism for interacting with
scrollbars (see the description of the \fBxScrollCommand\fR option
for details).

.SH "WIDGET COMMAND"
.PP
The \fBentry\fR command creates a new Tcl command whose
name is \fIpathName\fR.  This
command may be used to invoke various
operations on the widget.  It has the following general form:
.DS C
\fIpathName option \fR?\fIarg arg ...\fR?
.DE
\fIOption\fR and the \fIarg\fRs
determine the exact behavior of the command.
.PP
Many of the widget commands for entries take one or more indices as
arguments.  An index specifies a particular character in the entry's
string, in any of the following ways:
.TP 12
\fInumber\fR
Specifies the character as a numerical index, where 0 corresponds
to the first character in the string.
.TP 12
\fBanchor\fR
Indicates the anchor point for the selection, which is set with the
\fBselect from\fR and \fBselect adjust\fR widget commands.
.TP 12
\fBend\fR
Indicates the character just after the last one in the entry's string.
This is equivalent to specifying a numerical index equal to the length
of the entry's string.
.TP 12
\fBinsert\fR
Indicates the character adjacent to and immediately following the
insertion cursor.
.TP 12
\fBsel.first\fR
Indicates the first character in the selection.  It is an error to
use this form if the selection isn't in the entry window.
.TP 12
\fBsel.last\fR
Indicates the character just after the last one in the selection.
It is an error to use this form if the selection isn't in the
entry window.
.TP 12
\fB@\fInumber\fR
In this form, \fInumber\fR is treated as an x-coordinate in the
entry's window;  the character spanning that x-coordinate is used.
For example, ``\fB@0\fR'' indicates the left-most character in the
window.
.LP
Abbreviations may be used for any of the forms above, e.g. ``\fBe\fR''
or ``\fBsel.f\fR''.  In general, out-of-range indices are automatically
rounded to the nearest legal value.
.PP
The following commands are possible for entry widgets:
.TP
\fIpathName \fBcget\fR \fIoption\fR
Returns the current value of the configuration option given
by \fIoption\fR.
\fIOption\fR may have any of the values accepted by the \fBentry\fR
command.
.TP
\fIpathName \fBconfigure\fR ?\fIoption\fR? ?\fIvalue option value ...\fR?
Query or modify the configuration options of the widget.
If no \fIoption\fR is specified, returns a list describing all of
the available options for \fIpathName\fR. If \fIoption\fR is specified
with no \fIvalue\fR, 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 \fIoption\fR is specified).  If
one or more \fIoption\-value\fR 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.
\fIOption\fR may have any of the values accepted by the \fBentry\fR
command.
.TP
\fIpathName \fBdelete \fIfirst \fR?\fIlast\fR?
Delete one or more elements of the entry.
\fIFirst\fR is the index of the first character to delete, and
\fIlast\fR is the index of the character just after the last
one to delete.
If \fIlast\fR isn't specified it defaults to \fIfirst\fR+1,
i.e. a single character is deleted.
This command returns an empty string.
.TP
\fIpathName \fBget\fR
Returns the entry's string.
.TP
\fIpathName \fBicursor \fIindex\fR
Arrange for the insertion cursor to be displayed just before the character
given by \fIindex\fR.  Returns an empty string.
.TP
\fIpathName \fBindex\fI index\fR
Returns the numerical index corresponding to \fIindex\fR.
.TP
\fIpathName \fBinsert \fIindex string\fR
Insert the characters of \fIstring\fR just before the character
indicated by \fIindex\fR.  Returns an empty string.
.TP
\fIpathName \fBselection \fIoption arg\fR
This command is used to adjust the selection within an entry.  It
has several forms, depending on \fIoption\fR:
.RS
.TP
\fIpathName \fBselection adjust \fIindex\fR
Locate the end of the selection nearest to the character given by
\fIindex\fR, and adjust that end of the selection to be at \fIindex\fR
(i.e including but not going beyond \fIindex\fR).  The other
end of the selection is made the anchor point for future
\fBselect to\fR commands.  If the selection
isn't currently in the entry, then a new selection is created to
include the characters between \fIindex\fR and the most recent
selection anchor point, inclusive.
Returns an empty string.
.TP
\fIpathName \fBselection clear\fR
Clear the selection if it is currently in this widget.  If the
selection isn't in this widget then the command has no effect.
Returns an empty string.
.TP
\fIpathName \fBselection from \fIindex\fR
Set the selection anchor point to just before the character
given by \fIindex\fR.  Doesn't change the selection.
Returns an empty string.
.TP
\fIpathName \fBselection present\fR
Returns 1 if there is are characters selected in the entry,
0 if nothing is selected.
.TP
\fIpathName \fBselection range \fIstart\fR \fIend\fR
Sets the selection to include the characters starting with
the one indexed by \fIstart\fR and ending with the one just
before \fIend\fR.
If \fIend\fR refers to the same character as \fIstart\fR or an
earlier one, then the entry's selection is cleared.
.TP
\fIpathName \fBselection to \fIindex\fR
If \fIindex\fR is before the anchor point, set the selection
to the characters from \fIindex\fR up to but not including
the anchor point.
If \fIindex\fR is the same as the anchor point, do nothing.
If \fIindex\fR is after the anchor point, set the selection
to the characters from the anchor point up to but not including
\fIindex\fR.
The anchor point is determined by the most recent \fBselect from\fR
or \fBselect adjust\fR command in this widget.
If the selection isn't in this widget then a new selection is
created using the most recent anchor point specified for the widget.
Returns an empty string.
.RE
.TP
\fIpathName \fBxview \fIargs\fR
This command is used to query and change the horizontal position of the
text in the widget's window.  It can take any of the following
forms:
.RS
.TP
\fIpathName \fBxview\fR
Returns a list containing two elements.
Each element is a real fraction between 0 and 1;  together they describe
the horizontal span that is visible in the window.
For example, if the first element is .2 and the second element is .6,
20% of the entry'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 \fB\-xscrollcommand\fR
option.
.TP
\fIpathName \fBxview\fR \fIindex\fR
Adjusts the view in the window so that the character given by \fIindex\fR
is displayed at the left edge of the window.
.TP
\fIpathName \fBxview moveto\fI fraction\fR
Adjusts the view in the window so that the character \fIfraction\fR of the
way through the text appears at the left edge of the window.
\fIFraction\fR must be a fraction between 0 and 1.
.TP
\fIpathName \fBxview scroll \fInumber what\fR
This command shifts the view in the window left or right according to
\fInumber\fR and \fIwhat\fR.
\fINumber\fR must be an integer.
\fIWhat\fR must be either \fBunits\fR or \fBpages\fR or an abbreviation
of one of these.
If \fIwhat\fR is \fBunits\fR, the view adjusts left or right by
\fInumber\fR average-width characters on the display;  if it is
\fBpages\fR then the view adjusts by \fInumber\fR screenfuls.
If \fInumber\fR is negative then characters farther to the left
become visible;  if it is positive then characters farther to the right
become visible.
.RE

.SH "DEFAULT BINDINGS"
.PP
Ck automatically creates class bindings for entries that give them
the following default behavior.
.IP [1]
Clicking mouse button 1 positions the insertion cursor
just before the character underneath the mouse cursor, sets the
input focus to this widget, and clears any selection in the widget.
.IP [2]
If any normal printing characters are typed in an entry, they are
inserted at the point of the insertion cursor.
.IP [3]
The Left and Right keys move the insertion cursor one character to the
left or right;  they also clear any selection in the entry and set
the selection anchor.
Control-b and Control-f behave the same as Left and Right, respectively.
.IP [4]
The Home key, or Control-a, will move the insertion cursor to the
beginning of the entry and clear any selection in the entry.
.IP [5]
The End key, or Control-e, will move the insertion cursor to the
end of the entry and clear any selection in the entry.
.IP [6]
The Select key sets the selection anchor to the position
of the insertion cursor. It doesn't affect the current selection.
.IP [7]
The Delete key deletes the selection, if there is one in the entry.
If there is no selection, it deletes the character to the right of
the insertion cursor.
.IP [8]
The BackSpace key and Control-h delete the selection, if there is one
in the entry.
If there is no selection, it deletes the character to the left of
the insertion cursor.
.IP [9]
Control-d deletes the character to the right of the insertion cursor.
.IP [10]
Control-k deletes all the characters to the right of the insertion
cursor.
.IP [11]
Control-t reverses the order of the two characters to the right of
the insertion cursor.
.PP
If the entry is disabled using the \fB\-state\fR option, then the entry's
view can still be adjusted and text in the entry can still be selected,
but no insertion cursor will be displayed and no text modifications will
take place.
.PP
The behavior of entries can be changed by defining new bindings for
individual widgets or by redefining the class bindings.

.SH KEYWORDS
entry, widget