95 lines
2.4 KiB
PHP
95 lines
2.4 KiB
PHP
<?php defined('SYSPATH') or die('No direct access allowed.');
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/**
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* This class is the base used for common static methods that are used
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* for rendering.
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*
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* @package lnApp
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* @subpackage Page
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* @category Abstract/Helpers
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* @author Deon George
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* @copyright (c) 2010 Deon George
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* @license http://dev.leenooks.net/license.html
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*/
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abstract class lnApp_HTMLRender {
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protected static $_media_path = 'default/media';
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protected static $_required_keys = array();
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protected static $_unique_vals = array();
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public function __construct() {
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if (! isset(static::$_data))
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throw new Kohana_Exception(':class is missing important static variables',array(':class'=>get_called_class()));
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}
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/**
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* Add an item to be rendered
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*
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* @param array Item to be added
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*/
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public static function add($item,$prepend=FALSE) {
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foreach (static::$_required_keys as $key)
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if (! isset($item[$key]))
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throw new Kohana_Exception('Missing key :key for image',array(':key'=>$key));
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// Check for unique keys
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if (static::$_unique_vals)
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foreach (static::$_unique_vals as $v=>$u)
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foreach (static::$_data as $d)
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if (isset($d[$u]) && $d['data'] == $item['data'])
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return;
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if ($prepend)
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array_unshift(static::$_data,$item);
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else
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array_push(static::$_data,$item);
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}
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/**
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* Set the space used between rendering output
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*/
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public static function setSpacer($spacer) {
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static::$_spacer = $spacer;
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}
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/**
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* Set the Kohana Media Path, used to determine where to find additional
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* HTML content required for rendering.
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*/
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public static function setMediaPath($path) {
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static::$_media_path = $path;
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}
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/**
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* Factory instance method must be declared by the child class
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*/
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public static function factory() {
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throw new Kohana_Exception(':class is calling :method, when it should have its own method',
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array(':class'=>get_called_class(),':method'=>__METHOD__));
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}
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/**
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* Return the HTML to render the header images
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*/
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public function __toString() {
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try {
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return static::render();
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}
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// Display the exception message
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catch (Exception $e) {
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Kohana::exception_handler($e);
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return '';
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}
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}
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/**
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* Rendering must be declared by the child class
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*/
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protected function render() {
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throw new Kohana_Exception(':class is calling :method, when it should have its own method',
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array(':class'=>get_called_class(),':method'=>__METHOD__));
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}
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}
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?>
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