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138 | <?php
/*
* CodeScape Framework - A simple, flexible PHP framework
* Copyright (C) 2008, Alan Briolat <alan@codescape.net>
*
* 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 3 of the License, or
* (at your option) any later version.
*
* 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. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* UI and Templating module
*
* Implements PHP-based heirarchical templating.
*/
class UI extends CSF_Module
{
protected $context = array(
'title' => 'foobar',
'content' => 'lipsum mofo',
);
protected $blocks = array();
protected $blockstack = array();
protected $inherits = null;
protected function extend($tpl)
{
$this->inherits = $tpl;
}
protected function block_begin($block)
{
ob_start();
}
protected function block_end($block)
{
// Get the output of the block
$output = ob_get_clean();
// Store the output
$this->blocks[$this->level][$block] = $output;
// Search down the "tree" for an overridden version of the block
$lvl = $this->level + 1;
while ( $lvl < count($this->blocks) )
{
if ( array_key_exists($block, $this->blocks[$lvl]) )
{
echo $this->blocks[$lvl][$block];
return;
}
else
{
$lvl++;
}
}
echo $output;
}
protected function block_content($block)
{
// Search up the "tree" for the block
$lvl = $this->level - 1;
while ( $lvl >= 0 )
{
if ( array_key_exists($block, $this->blocks[$lvl]) )
{
echo $this->blocks[$lvl][$block];
return;
}
else
{
$lvl--;
}
}
echo '';
}
public function parse_template($fn)
{
// Get the template heirarchy
$_tplstack = array();
do {
ob_start();
include($fn);
ob_end_clean();
array_unshift($_tplstack, $fn);
$fn = $this->inherits;
$this->extend(null);
} while ( $fn );
var_dump($_tplstack);
// Reset the status
$this->blocks = array();
// Top-down parsing stage
for ( $this->level = 0 ;
$this->level < count($_tplstack) ;
$this->level++ )
{
ob_start();
extract($this->context);
include($_tplstack[$this->level]);
ob_end_clean();
}
var_dump($this->blocks);
// Bottom-up parsing stage (all except the root)
for ( $this->level = count($_tplstack) - 1
; $this->level > 0 ; $this->level-- )
{
ob_start();
extract($this->context);
include($_tplstack[$this->level]);
ob_end_clean();
}
// Parse the root template
ob_start();
extract($this->context);
include($_tplstack[0]);
return ob_get_clean();
}
}
?>
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