'\"
'\" Copyright (c) 1995 DSC Technologies Corporation
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
'\" @(#) notebook.n
'\"
.so man.macros
.HS iwidgets::notebook iwid
.BS
'\" Note:  do not modify the .SH NAME line immediately below!
'\"
'\"
.SH NAME
iwidgets::notebook \- create and manipulate notebook widgets
.SH SYNOPSIS
\fBiwidgets::notebook\fR \fIpathName\fR ?\fIoptions\fR?
.SH "INHERITANCE"
itk::Widget <- iwidgets::Notebook
.SH "STANDARD OPTIONS"
.LP
.nf
.ta 4c 8c 12c
\fBbackground\fR	\fBforeground\fR	\fBscrollCommand\fR	\fBwidth\fR
\fBcursor\fR	\fBheight\fR	
.fi
.LP
See the "options" manual entry for details on the standard options.
.SH "WIDGET-SPECIFIC OPTIONS"
.LP
.nf
Name:	\fBauto\fR
Class:	\fBAuto\fR
Command-Line Switch:	\fB-auto\fR
.fi
.IP
Specifies whether to use the automatic packing/unpacking algorithm of the
notebook. A value of \fBtrue\fR indicates that page frames will be unpacked 
and packed acoording to the algorithm described in the \fBselect\fR command. 
A value of \fBfalse\fR leaves the current page packed and subsequent selects, 
next, or previous commands do not switch pages automatically. In either 
case the page's associated command (see the \fBadd\fR command's description 
of the \fBcommand\fR option) is invoked. The value may have any of the 
forms accepted by the \fBTcl_GetBoolean\fR, such as true, false, 0, 1, yes, 
or no.
.IP
For example, if a series of pages in a notebook simply change certain display
configurations of a graphical display, the \fB-auto\fR flag could be used. 
By setting it, the \fB-command\fR procs could do the appropriate reconfiguring
of the page when the page is switched.
.BE
.SH DESCRIPTION
.PP
The \fBiwidgets::notebook\fR command creates a new window (given by the pathName 
argument) and makes it into a notebook widget. Additional options, described 
above may be specified on the command line or in the option database to 
configure aspects of the notebook such as its colors, font, and text. 
The \fBiwidgets::notebook\fR command returns its \fIpathName\fR argument. At the time 
this command is invoked, there must not exist a window named pathName, but 
pathName's parent must exist.

A notebook is a widget that contains a set of pages. It displays one page from 
the set as the selected page. When a page is selected, the page's contents are 
displayed in the page area. When first created a notebook has no pages. Pages 
may be added or deleted using widget commands described below.

.SH "NOTEBOOK PAGES"
.PP
A notebook's pages area contains a single child site \fBframe\fR. When a new 
page is created it is a child of this frame. The page's child site frame 
serves as a geometry container for applications to pack widgets into. It is 
this frame that is automatically unpacked or packed when the \fBauto\fR 
option is \fBtrue\fR. This creates the effect of one page being visible at 
a time. When a new page is selected, the previously selected page's child 
site frame is automatically unpacked from the notebook's child site frame 
and the newly selected page's child site is packed into the notebook's 
child site frame.

However, sometimes it is desirable to handle page changes in a different 
manner. By specifying the \fBauto\fR option as \fBfalse\fR, child site 
packing can be disabled and done differently. For example, all widgets might 
be packed into the first page's child site frame. Then when a new page is 
selected, the application can reconfigure the widgets and give the appearance
that the page was flipped.

In both cases the \fBcommand\fR option for a page specifies a Tcl Command to
execute when the page is selected. In the case of \fBauto\fR being \fBtrue\fR, 
it is called between the unpacking of the previously selected page and the 
packing of the newly selected page.

.SH "WIDGET-SPECIFIC METHODS"
.PP
The \fBiwidgets::notebookfR 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 a notebook take as one argument an indicator 
of which page of the notebook to operate on. These indicators are called 
indexes and may be specified in any of the following forms:
.TP
\fInumber\fR
Specifies the index of the the component. For menus, 0 corresponds to the 
left-most menu of the menu bar. For entries, 0 corresponds to the top-most 
entry of the menu.
\fInumber\fR
Specifies the page numerically, where 0 corresponds to the first page in 
the notebook, 1 to the second, and so on.
.TP
\fBselect\fR
Specifies the currently selected page's index. If no page is currently 
selected, the value -1 is returned.
.TP
\fBend\fR
Specifes the last page in the notebooks's index. If the notebook is empty 
this will return -1.
.TP
\fIpattern\fR
If the index doesn't satisfy the form of a number, then this form is used. 
Pattern is pattern-matched against the \fBlabel\fR of each page in the 
notebook, in order from the first to the last page, until a matching entry 
is found. The rules of \fBTcl_StringMatch\fR are used.
.PP
'.............................................................................
The following commands are possible for notebook widgets:
.TP
\fIpathName\fR \fBadd\fR ?\fIoption value\fR?
Add a new page at the end of the notebook. A new child site frame is 
created. Returns the child site pathName. If additional arguments are 
present, they specify any of the following options:
.RS
.TP
\fB-background\fR \fIvalue\fR
Specifies a background color to use for displaying the child site frame 
of this page. If this option is specified as an empty string (the default), 
then the background option for the overall notebook is used.
.TP
\fB-command\fR \fIvalue\fR
Specifies a Tcl command to be executed when this page is selected. This 
allows the programmer a hook to reconfigure this page's widgets or any other
page's widgets.
.IP
If the notebook has the auto option set to true, when a page is selected 
this command will be called immediately after the previously selected page 
is unpacked and immediately before this page is selected. The index value 
select is valid during this Tcl command. `index select' will return this 
page's page number. 
.IP
If the auto option is set to false, when a page is selected the unpack and 
pack calls are bypassed. This Tcl command is still called.
.TP
\fB-foreground\fR \fIvalue\fR
Specifies a foreground color to use for displaying tab labels when tabs are 
in their normal unselected state. If this option is specified as an empty 
string (the default), then the foreground option for the overall notebook 
is used. 
.TP
\fB-label\fR \fIvalue\fR
Specifies a string to associate with this page. This label serves as an 
additional identifier used to reference the page. This label may be used 
for the index value in widget commands. 
.RE
.TP
\fIpathName\fR \fBchildSite\fR ?\fIindex\fR?
If passed no arguments, returns a list of pathNames for all the pages in 
the notebook. If the notebook is empty, an empty list is returned
.IP
If index is passed, it returns the pathName for the page's child site 
frame specified by index. Widgets that are created with this pathName will 
be displayed when the associated page is selected. If index is not a valid 
index, an empty string is returned. 
.TP
\fIpathName\fR \fBcget\fR \fIoption\fR
Returns the current value of the configuration option given by \fIoption\fR.
.TP
\fIpathName\fR \fBconfigure\fR ?\fIoption\fR? ?\fIvalue\fR \fIoption\fR \fIvalue\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 (see \fBTk_ConfigureInfo\fR for information on the 
format of this list). 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 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. \fIOption\fR 
may have any of the values accepted by the \fBiwidgets::notebook\fR command.
.TP
\fIpathName\fR \fBdelete\fR \fIindex1\fR ?i\fRndex2?
Delete all of the pages between \fIindex1\fR and \fIindex2\fR inclusive. 
If \fIindex2\fR is omitted then it defaults to \fIindex1\fR. Returns an 
empty string.
.TP
\fIpathName\fR \fBindex\fR \fIindex\fR
Returns the numerical index corresponding to \fIindex\fR.
.TP
\fBpathName\fR \fBinsert\fR \fIindex\fR ?\fIoption\fR \fIvalue\fR?
Insert a new page in the notebook before the page specified by \fIindex\fR. 
A new child site \fBframe\fR is created. See the \fBadd\fR command for 
valid options. Returns the child site pathName.
.TP
\fIpathName\fR \fBnext\fR
Advances the selected page to the next page (order is determined by insertion 
order). If the currently selected page is the last page in the notebook, 
the selection wraps around to the first page in the notebook. 
.IP
For notebooks with auto set to true the current page's child site is 
unpacked from the notebook's child site frame. Then the next page's child 
site is packed into the notebooks child site frame. The Tcl command given 
with the command option will be invoked between these two operations.
.IP
For notebooks with auto set to false the Tcl command given with the 
command option will be invoked.
.TP
\fIpathName\fR \fBpagecget\fR \fIindex\fR ?\fIoption\fR?
Returns the current value of the configuration option given by \fIoption\fR 
for the page specified by \fIindex\fR. The valid available options are the 
same as available to the \fBadd\fR command.
.TP
\fIpathName\fR \fBpageconfigure\fR \fIindex\fR ?\fIoption\fR? ?\fIvalue\fR \fIoption\fR \fIvalue\fR ...?
This command is similar to the configure command, except that it applies to 
the options for an individual page, whereas configure applies to the options 
for the notebook. Options may have any of the values accepted by the add 
widget command. If options are specified, options are modified as indicated 
in the command and the command returns an empty string. If no options are 
specified, returns a list describing the current options for 
page \fIindex\fR (see \fBTk_ConfigureInfo\fR for information on the 
format of this list).
.TP
\fIpathName\fR \fBprev\fR
Moves the selected page to the previous page (order is determined by 
insertion order). If the currently selected page is the first page in the 
notebook, the selection wraps around to the last page in the notebook.
.IP
For notebooks with \fBauto\fR set to \fBtrue\fR the current page's child 
site is unpacked from the notebook's child site frame. Then the previous 
page's child site is packed into the notebooks child site frame. The Tcl 
command given with the command option will be invoked between these two 
operations.
.IP
For notebooks with \fBauto\fR set to \fBfalse\fR the Tcl command given with 
the command option will be invoked.
.TP
\fIpathName\fR \fBselect\fR \fIindex\fR
Selects the page specified by \fIindex\fR as the currently selected page.
.IP
For notebooks with \fBauto\fR set to \fBtrue\fR the current page's child 
site is unpacked from the notebook's child site frame. Then the index page's 
child site is packed into the notebooks child site frame. The Tcl command 
given with the command option will be invoked between these two operations.
.IP
For notebooks with \fBauto\fR set to \fBfalse\fR the Tcl command given with 
the command option will be invoked.
.TP
\fIpathName\fR \fBview\fR
Returns the currently selected page. This command is for compatibility 
with the scrollbar widget.
.TP
\fIpathName\fR \fBview\fR \fIindex\fR
Selects the page specified by \fIindex\fR as the currently selected page. 
This command is for compatibility with the scrollbar widget.
.TP
\fIpathName\fR \fBview\fR \fImoveto\fR \fIfraction\fR
Uses the fraction value to determine the corresponding page to move to. 
This command is for compatibility with the scrollbar widget.
.TP
\fIpathName\fR \fBview\fR \fIscroll\fR \fInum\fR \fIwhat\fR
Uses the \fInum\fR value to determine how many pages to move forward or 
backward (num can be negative or positive). The \fIwhat\fR argument is 
ignored. This command is for compatibility with the scrollbar widget.

.SH EXAMPLE
.PP
Following is an example that creates a notebook with two pages. In this example, we use a scrollbar widget to control the notebook widget.
.nf
.IP
.ta 2c 8c 12c
.DS
package require Iwidgets 4.0
# Create the notebook widget and pack it.
  iwidgets::notebook .nb -width 100 -height 100
  pack .nb -anchor nw \\
	-fill both \\
	-expand yes \\
	-side left \\
	-padx 10 \\
	-pady 10
.IP
# Add two pages to the notebook, labelled 
# "Page One" and "Page Two", respectively.
  .nb add -label "Page One"
  .nb add -label "Page Two"
.IP
# Get the child site frames of these two pages.
  set page1CS [.nb childsite 0]
  set page2CS [.nb childsite "Page Two"]
.IP
# Create buttons on each page of the notebook
  button $page1CS.b -text "Button One"
  pack $page1CS.b
  button $page2CS.b -text "Button Two"
  pack $page2CS.b
.IP
# Select the first page of the notebook
  .nb select 0
.IP
# Create the scrollbar and associate teh scrollbar
# and the notebook together, then pack the scrollbar
  scrollbar .scroll -command ".nb view"
  .nb configure -scrollcommand ".scroll set"
  pack .scroll -fill y -expand yes -pady 10
.DE
.fi
.SH AUTHOR
Bill W. Scott
.SH KEYWORDS
notebook page 
