wiki-archive/twiki/lib/TWiki/Plugins/PreferencesPlugin.pm

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# Plugin for TWiki Enterprise Collaboration Platform, http://TWiki.org/
#
# Copyright (C) 2005-2006 TWiki Contributors.
# All Rights Reserved. TWiki Contributors are listed in the
# AUTHORS file in the root of this distribution.
# NOTE: Please extend that file, not this notice.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version. For
# more details read LICENSE in the root of this distribution.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# For licensing info read LICENSE file in the TWiki root.
# Still do to:
# Handle continuation lines (see Prefs::parseText). These should always
# go into a text area.
package TWiki::Plugins::PreferencesPlugin;
use strict;
use CGI ( -any );
use Error qw( :try );
use vars qw(
$web $topic $user $installWeb $VERSION $RELEASE $pluginName
$query @shelter
);
# This should always be $Rev: 9839 $ so that TWiki can determine the checked-in
# status of the plugin. It is used by the build automation tools, so
# you should leave it alone.
$VERSION = '$Rev: 9839 $';
# This is a free-form string you can use to "name" your own plugin version.
# It is *not* used by the build automation tools, but is reported as part
# of the version number in PLUGINDESCRIPTIONS.
$RELEASE = 'Dakar';
my $MARKER = "\007";
sub initPlugin {
( $topic, $web, $user, $installWeb ) = @_;
$pluginName = 'PreferencesPlugin';
# check for Plugins.pm versions
if( $TWiki::Plugins::VERSION < 1.026 ) {
TWiki::Func::writeWarning( 'Version mismatch between '.$pluginName.' and Plugins.pm' );
return 0;
}
@shelter = ();
return 1;
}
sub beforeCommonTagsHandler {
### my ( $text, $topic, $web ) = @_;
return unless ( $_[0] =~ m/%EDITPREFERENCES{(.*?)}%/ );
my $attrs = new TWiki::Attrs( $1 );
my($formWeb, $form ) = TWiki::Func::normalizeWebTopicName( $web, $attrs->{_DEFAULT} );
# SMELL: Unpublished API. No choice, though :-(
my $formDef = new TWiki::Form( $TWiki::Plugins::SESSION, $formWeb, $form );
$query = TWiki::Func::getCgiQuery();
my $action = lc $query->param( 'prefsaction' );
if ( $action eq 'edit' ) {
TWiki::Func::setTopicEditLock( $web, $topic, 1 );
$_[0] =~ s(^((?:\t| )+\*\sSet\s)(\w+)\s\=(.*$(\n[ \t]+[^\s*].*$)*))
($1._generateEditField($web, $topic, $2, $3, $formDef))gem;
$_[0] =~ s(%EDITPREFERENCES.*%)
(_generateButtons($web, $topic, 0))eo;
} elsif ( $action eq 'cancel' ) {
TWiki::Func::setTopicEditLock( $web, $topic, 0 );
my $url = TWiki::Func::getViewUrl( $web, $topic );
TWiki::Func::redirectCgiQuery( $query, $url );
return 0;
} elsif ( $action eq 'save' ) {
my $text = TWiki::Func::readTopicText( $web, $topic );
$text =~ s(^((?:\t| )+\*\sSet\s)(\w+)\s\=\s(.*)$)
($1._saveSet($web, $topic, $2, $3, $formDef))mgeo;
my $error = TWiki::Func::saveTopicText( $web, $topic, $text, '' );
TWiki::Func::setTopicEditLock( $web, $topic, 0 );
my $url;
if( $error ) {
$url = $error;
} else {
$url = TWiki::Func::getViewUrl( $web, $topic );
}
TWiki::Func::redirectCgiQuery( $query, $url );
return 0;
} else {
# implicit action="view"
$_[0] =~ s(%EDITPREFERENCES.*%)
(_generateButtons($web, $topic, 1))ge;
}
my $viewUrl = TWiki::Func::getScriptUrl( $web, $topic, 'viewauth', 0 );
$_[0] = CGI::start_form(-name => 'editpreferences', -method => 'post',
-action => $viewUrl ).
$_[0].
CGI::end_form();
}
# Use the post-rendering handler to plug our formatted editor units
# into the text
sub postRenderingHandler {
### my ( $text ) = @_;
$_[0] =~ s/SHELTER$MARKER(\d+)/$shelter[$1]/g;
}
# Pluck the default value of a named field from a form definition
sub _getField {
my( $formDef, $name ) = @_;
foreach my $f ( @{$formDef->{fields}} ) {
if( $f->{name} eq $name ) {
return $f;
}
}
return undef;
}
# Generate a field suitable for editing this type. Use of the core
# function 'renderFieldForEdit' ensures that we will pick up
# extra edit types defined in other plugins.
sub _generateEditField {
my( $web, $topic, $name, $value, $formDef ) = @_;
$value =~ s/^\s*(.*?)\s*$/$1/ge;
my $html;
if( $formDef ) {
my $fieldDef = _getField( $formDef, $name );
if( $fieldDef ) {
# SMELL: use of unpublished core function
my $extras;
( $extras, $html ) =
$formDef->renderFieldForEdit( $fieldDef, $web, $topic, $value);
}
}
unless( $html ) {
# No form definition, default to text field.
$html = CGI::textfield( -class=>'twikiEditFormError', -name => $name,
-size => 80, -value => $value );
}
push( @shelter, $html );
return CGI::span({class=>'twikiAlert'},
$name.' = SHELTER'.$MARKER.$#shelter);
}
# Generate the buttons that replace the EDITPREFERENCES tag, depending
# on the mode
sub _generateButtons {
my( $web, $topic, $doEdit ) = @_;
my $text = '';
if ( $doEdit ) {
$text .= CGI::submit(-name=>'prefsaction', -value=>'Edit', -class=>'twikiButton');
} else {
$text .= CGI::submit(-name=>'prefsaction', -value=>'Save', -class=>'twikiSubmitButton');
$text .= '&nbsp;&nbsp;';
$text .= CGI::submit(-name=>'prefsaction', -value=>'Cancel', -class=>'twikiButton');
}
return $text;
}
# Given a Set in the topic being saved, look in the query to see
# if there is a new value for the Set and generate a new
# Set statement.
sub _saveSet {
my( $web, $topic, $name, $value, $formDef ) = @_;
my $newValue = $query->param( $name ) || $value;
if( $formDef ) {
my $fieldDef = _getField( $formDef, $name );
my $type = $fieldDef->{type} || '';
if( $type && $type =~ /^checkbox/ ) {
my $val = '';
my $vals = $fieldDef->{value};
foreach my $item ( @$vals ) {
my $cvalue = $query->param( $name.$item );
if( defined( $cvalue ) ) {
if( ! $val ) {
$val = '';
} else {
$val .= ', ' if( $cvalue );
}
$val .= $item if( $cvalue );
}
}
$newValue = $val;
}
}
# if no form def, it's just treated as text
return $name.' = '.$newValue;
}
1;