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[kivitendo-erp.git] / SL / Template / Plugin / JavaScript.pm

diff --git a/SL/Template/Plugin/JavaScript.pm b/SL/Template/Plugin/JavaScript.pm
index 241ea0ea3cdb738d079ff4d1c8559d2f0efc4965..48158307f8f085eb57758f53bda318c3206c6feb 100644 (file)
--- a/SL/Template/Plugin/JavaScript.pm
+++ b/SL/Template/Plugin/JavaScript.pm
@@ -1,33 +1,55 @@
 package SL::Template::Plugin::JavaScript;
 
 package SL::Template::Plugin::JavaScript;
 

-use base qw( Template::Plugin );
-use Template::Plugin;
+use base qw( Template::Plugin::Filter );

 
 use strict;
 
 
 use strict;
 

+my $cached_instance;
+

 sub new {
 sub new {

-  my ($class, $context, @args) = @_;
+  my $class = shift;
+
+  return $cached_instance ||= $class->SUPER::new(@_);
+}
+
+sub init {
+  my $self = shift;
+
+  $self->install_filter($self->{ _ARGS }->[0] || 'js');

 
 

-  return bless {
-    CONTEXT => $context,
-  }, $class;
+  return $self;

 }
 
 #
 # public interface
 #
 
 }
 
 #
 # public interface
 #
 

+# see ecmascript spec section 7.8.4
+my @escape_chars = ('\\', '\'', '"');
+my %control_chars = (
+  "\n"   => 'n',
+  "\t"   => 't',
+  "\r"   => 'r',
+  "\f"   => 'f',
+  "\x08" => 'b',
+  "\x0B" => 'v', # noone uses vertical tab anyway...
+);
+my $re = join '', map { qr/($_)/s } join '|', keys(%control_chars), map { "\Q$_\E" } @escape_chars;
+

 sub escape {
   my $self = shift;
   my $text = shift;
 
 sub escape {
   my $self = shift;
   my $text = shift;
 

-  $text =~ s|\\|\\\\|g;
-  $text =~ s|\"|\\\"|g;
-  $text =~ s|\n|\\n|g;
+  $text =~ s/$re/'\\' . ($control_chars{$1} || $1)/egs;

 
   return $text;
 }
 
 
   return $text;
 }
 

+sub filter {
+  my ($self, $text) = @_;
+  return $self->escape($text);
+}
+

 sub replace_with {
   return _replace_helper('replaceWith', @_);
 }
 sub replace_with {
   return _replace_helper('replaceWith', @_);
 }


@@ -82,6 +104,11 @@ value is not wrapped in quotes. Example:
   <input type="submit" value="Delete"
          onclick="if (confirm('Do you really want to delete this: [% JavaScript.escape(obj.description) %]') return true; else return false;">
 
   <input type="submit" value="Delete"
          onclick="if (confirm('Do you really want to delete this: [% JavaScript.escape(obj.description) %]') return true; else return false;">
 

+You can also use the filter syntax instead:
+
+  <input type="submit" value="Delete"
+         onclick="if (confirm('Do you really want to delete this: [% obj.description | js %]') return true; else return false;">
+

 =item C<replace_with $selector, $template, %locals>
 
 Returns code replacing the DOM elements matched by C<$selector> with
 =item C<replace_with $selector, $template, %locals>
 
 Returns code replacing the DOM elements matched by C<$selector> with