PHPTAL-NP-0.7.0/libs/PHPTAL/Attribute/TAL/Attributes.php

   1 <?php
   2 /* vim: set expandtab tabstop=4 shiftwidth=4: */
   3 //
   4 //  Copyright (c) 2003 Laurent Bedubourg
   5 //
   6 //  This library is free software; you can redistribute it and/or
   7 //  modify it under the terms of the GNU Lesser General Public
   8 //  License as published by the Free Software Foundation; either
   9 //  version 2.1 of the License, or (at your option) any later version.
  10 //
  11 //  This library is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 //  Lesser General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU Lesser General Public
  17 //  License along with this library; if not, write to the Free Software
  18 //  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 //
  20 //  Authors: Laurent Bedubourg <laurent.bedubourg@free.fr>
  21 //
  22
  23 /**
  24  * tal:attributes attribute handler.
  25  *
  26  * This template attribute defines xhtml entity attributes.
  27  *
  28  * Assuming link variable :
  29  *
  30  * $link->href  = "http://www.google.fr";
  31  * $link->title = "google search engine";
  32  * $link->text  = "google";
  33  *
  34  * The template code :
  35  *
  36  * <a href="http://www.example.com"
  37  *    title="sample title"
  38  *    class="cssLink"
  39  *
  40  *    tal:attributes="href link/href; title link/title"
  41  *    tal:content="href link/text"
  42  *
  43  * >sample text</a>
  44  *
  45  * Will produce :
  46  *
  47  * <a class="cssLink"
  48  *    href="http://www.google.com"
  49  *    title="google search engine"
  50  * >google</a>
  51  *
  52  * As shown above, non overwritten attributes are keep in result xhtml.
  53  *
  54  * @author Laurent Bedubourg <laurent.bedubourg@free.fr>
  55  */
  56 class PHPTAL_Attribute_TAL_Attributes extends PHPTAL_Attribute
  57 {
  58     var $_overwritten = array();
  59
  60     function activate(&$g, &$tag)
  61     {
  62         global $_phptal_xhtml_boolean_attributes;
  63
  64         $g->doPrintString('<', $tag->name());
  65
  66         $atts = $tag->attributes();
  67
  68         $exp = new PHPTAL_Expression($g, $tag, $this->expression);
  69         $exp->setPolicy(_PHPTAL_ES_RECEIVER_IS_TEMP);
  70         $err = $exp->prepare();
  71         if (PEAR::isError($err)) { return $err; }
  72
  73         if ($exp->countSubs() > 0) {
  74             foreach ($exp->subs() as $sub) {
  75                 $err = $this->_attributeExpression($g, $tag, $sub);
  76                 if (PEAR::isError($err)) { return $err; }
  77             }
  78         } else {
  79             $err = $this->_attributeExpression($g, $tag, $exp);
  80             if (PEAR::isError($err)) { return $err; }
  81         }
  82
  83         // echo non overwritten xhtml attributes
  84
  85         foreach ($atts as $key=>$value) {
  86             $test_key = strtolower($key);
  87             if (!in_array($test_key, $this->_overwritten)) {
  88                 // boolean attributes
  89                 if ($tag->_parser->_outputMode() == PHPTAL_XHTML
  90                     && in_array($test_key, $_phptal_xhtml_boolean_attributes)) {
  91                     $g->doPrintString(' '.$key);
  92                 } else {
  93                     $g->doPrintString(' '.$key .'="');
  94                     $g->doPrintString($value);
  95                     $g->doPrintString('"');
  96                 }
  97             }
  98         }
  99
 100         if ($tag->_isXHTMLEmptyElement()) {
 101             $g->doPrintString(' />');
 102             return;
 103         }
 104
 105         // continue tag show
 106         if ($tag->hasContent()) {
 107             $g->doPrintString('>');
 108         } else {
 109             $g->doPrintString('/>');
 110         }
 111
 112         $err = $tag->generateContent($g);
 113         if (PEAR::isError($err)) { return $err; }
 114
 115         if ($tag->hasContent()) {
 116             $g->doPrintString('</', $tag->name(), '>');
 117         }
 118     }
 119
 120     function _printAttribute(&$g, &$tag, &$realName, &$varName, $default=false)
 121     {
 122         global $_phptal_xhtml_boolean_attributes;
 123         // watch boolean attributes on XHTML mode
 124         if ($tag->_parser->_outputMode() == PHPTAL_XHTML
 125             && in_array($realName, $_phptal_xhtml_boolean_attributes)) {
 126             $g->doIf('!PEAR::isError($'.$varName.') && $'.$varName);
 127             $g->doPrintString(' '.$realName);
 128             $g->endBlock();
 129         } elseif ($default) {
 130             $g->doIf('!PEAR::isError($'.$varName.') && false !== $'.$varName.' && null !== $'.$varName);
 131             $g->doPrintString(' '. $realName . '="');
 132             $g->doPrintVar($varName);
 133             $g->doPrintString('"');
 134             $g->endBlock();
 135         } else {
 136             $g->doPrintString(' '. $realName . '="');
 137             $g->doPrintVar($varName);
 138             $g->doPrintString('"');
 139         }
 140     }
 141
 142     function _attributeExpression(&$g, &$tag, &$sub)
 143     {
 144         $atts = $tag->attributes();
 145         $default = false;
 146         $name = strtolower($sub->getReceiver());
 147
 148         // default in tal:attributes use default tag attributes
 149         // if (preg_match('/\|\s*?\bdefault\b/sm', $sub->_src)) {
 150         if (preg_match('/\bdefault\b/sm', $sub->_src)) {
 151             // ensure the attribute as a default value set in source
 152             // template
 153             $attrs = $tag->attributes();
 154             if (!array_key_exists($name, $atts)){
 155                 $g->doAffectResult('$__default__', 'false');
 156             } else {
 157                 // store the default value in __default__ variable
 158                 $g->doAffectResult('$__default__',
 159                                    '\''. str_replace('\'', '\\\'', $atts[$name]) . '\'' );
 160             }
 161             $default = true;
 162         }
 163
 164         $real = str_replace('__phptales_dd__', ':', $name);
 165         $this->_overwritten[] = $real;
 166         $err = $sub->generate();
 167         if (PEAR::isError($err)) { return $err; }
 168
 169         $this->_printAttribute($g, $tag, $real, $name, $default);
 170     }
 171 }
 172
 173 ?>