717 lines
13 KiB
PHP
717 lines
13 KiB
PHP
<?php
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/**
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* meta
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*
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* Hierarchial data tool
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*
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* @package meta
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* @author Timothy J. Warren
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* @copyright Copyright (c) 2012 - 2015
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* @link https://github.com/aviat4ion/meta
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* @license http://philsturgeon.co.uk/code/dbad-license
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*/
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// --------------------------------------------------------------------------
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namespace Meta\Base;
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/**
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* Class for building pages
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*
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* All methods are chainable, with the exception of the constructor,
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* build_header(), build_footer(), and _headers() methods.
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*/
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class Page {
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/**
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* Meta tags
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*
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* @var string
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*/
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private $meta;
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/**
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* JS tags for the header
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*
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* @var string
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*/
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private $head_js;
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/**
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* JS tags for the footer
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*
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* @var string
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*/
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private $foot_js;
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/**
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* CSS tags for the page
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*
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* @var string
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*/
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private $css;
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/**
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* Page title
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*
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* @var string
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*/
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private $title;
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/**
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* Additional header tags
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*
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* @var string
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*/
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private $head_tags;
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/**
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* Class(es) to apply to the main body tag
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*
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* @var string
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*/
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private $body_class;
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/**
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* Id to apply to the body tag
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*
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* @var string
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*/
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private $body_id;
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/**
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* Base tag
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*
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* @var string
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*/
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private $base;
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/**
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* Content for outputting
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*
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* @var string
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*/
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private $buffer;
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/**
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* HTTP headers to send
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*
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* @var array
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*/
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private $headers;
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/**
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* Set up the page class
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*
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* @return void
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*/
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public function __construct()
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{
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$this->meta = "";
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$this->head_js = "";
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$this->foot_js = "";
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$this->css = "";
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$this->title = "";
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$this->head_tags = "";
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$this->body_class = "";
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$this->body_id = "";
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$this->base = "";
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$this->buffer = "";
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$this->headers = array();
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}
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// --------------------------------------------------------------------------
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/**
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* PHP magic method called when ending the script
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* Used for outputing HTML
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*
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* @return void
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*/
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public function __destruct()
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{
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if (headers_sent())
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{
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die();
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}
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if ( ! empty($this->headers))
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{
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// Set headers
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foreach($this->headers as $key => $val)
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{
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if ( ! isset($val))
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{
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@header($key);
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}
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else
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{
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@header("$key: $val");
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}
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}
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}
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if ( ! empty($this->buffer))
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{
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(GZ_COMPRESS) ? ob_start('ob_gzhandler') : ob_start();
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echo $this->buffer;
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// Check if a buffer exists
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// so that it doesn't throw a notice
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if (ob_get_level() > 0)
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{
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ob_end_flush();
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}
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}
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}
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// --------------------------------------------------------------------------
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/**
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* Sets server headers and doctype
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*
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* Also sets page mime type, based on if sent as
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* html or xhtml, and what the target browser
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* supports
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*
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* @param bool $html5
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* @return Page
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*/
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private function _headers($html5)
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{
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$this->set_header("Cache-Control", "must-revalidate, public");
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$mime = "";
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//Variable for accept keyword
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$accept = ( ! empty($_SERVER['HTTP_ACCEPT'])) ? $_SERVER['HTTP_ACCEPT'] : "";
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//Predefine doctype
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$doctype_string = ($html5 == TRUE) ? '<!DOCTYPE html>' : '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN">';
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//Predefine charset
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$charset = "UTF-8";
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$mime = "text/html";
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if ($html5 == FALSE)
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{
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$doctype_string = '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">';
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}
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$doctype_string .= "<html lang='en'>";
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// finally, output the mime type and prolog type
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$this->set_header("Content-Type", "{$mime};charset={$charset}");
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$this->set_header("X-UA-Compatible", "chrome=1, IE=edge");
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$this->set_output($doctype_string);
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return $this;
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}
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// --------------------------------------------------------------------------
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/**
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* Set Meta
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*
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* Sets meta tags, with codeigniter native meta tag helper
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*
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* @param array $meta
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* @return Page
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*/
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public function set_meta($meta)
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{
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$this->meta .= $this->_meta($meta);
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return $this;
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}
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// --------------------------------------------------------------------------
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/**
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* Sets minified javascript group in header
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*
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* @param string $group
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* @param bool $debug
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* @return Page
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*/
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public function set_head_js_group($group, $debug = FALSE)
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{
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if ($group === FALSE)
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{
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return $this;
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}
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$file = SCRIPT_PATH . $group;
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$file .= ($debug == TRUE) ? "/debug/1" : "";
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$this->head_js .= $this->script_tag($file, FALSE);
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return $this;
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}
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// --------------------------------------------------------------------------
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/**
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* Sets a minified css group
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* @param string $group
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* @return Page
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*/
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public function set_css_group($group)
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{
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$link = array(
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'href' => STYLE_PATH . $group,
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'rel' => 'stylesheet',
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'type' => 'text/css'
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);
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$this->css .= $this->_link_tag($link);
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return $this;
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}
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// --------------------------------------------------------------------------
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/**
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* Sets a minified javascript group for the page footer
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*
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* @param string $group
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* @param bool $debug
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* @return Page
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*/
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public function set_foot_js_group($group, $debug = FALSE)
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{
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$file = SCRIPT_PATH . $group;
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$file .= ($debug == TRUE) ? "/debug/1" : "";
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$this->foot_js .= $this->script_tag($file, FALSE);
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return $this;
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}
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// --------------------------------------------------------------------------
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/**
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* Sets html title string
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*
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* @param string $title
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* @return Page
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*/
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public function set_title($title = "")
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{
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$title = ($title == "") ? DEFAULT_TITLE : $title;
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$this->title = $title;
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return $this;
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}
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// --------------------------------------------------------------------------
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/**
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* Sets custom body class
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*
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* @param string $class
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* @return Page
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*/
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public function set_body_class($class = "")
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{
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$this->body_class = $class;
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return $this;
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}
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// --------------------------------------------------------------------------
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/**
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* Sets custom body id
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*
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* @param string $id
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* @return Page
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*/
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public function set_body_id($id = "")
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{
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$this->body_id = $id;
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return $this;
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}
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// --------------------------------------------------------------------------
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/**
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* Sets custom base href
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*
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* @param string href
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* @return Page
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*/
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public function set_base($href)
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{
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$this->base = $href;
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return $this;
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}
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// --------------------------------------------------------------------------
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/**
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* Sets custom css tags
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*
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* @param string $name
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* @param bool $domain
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* @param string $media
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* @return Page
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*/
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public function set_css_tag($name, $domain = TRUE, $media = "all")
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{
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$path = CONTENT_DOMAIN;
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$css_file = "{$path}/css/{$name}.css";
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if ($domain == FALSE)
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{
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$css_file = $name;
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}
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$this->css_tags .= $this->_link_tag(array(
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'rel' => 'stylesheet',
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'type' => 'text/css',
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'media' => $media,
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'href' => $css_file,
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));
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return $this;
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}
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// --------------------------------------------------------------------------
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/**
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* Sets a custom tag in the header
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*
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* @param string $tag
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* @return Page
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*/
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public function set_head_tag($tag)
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{
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$this->head_tags .= $tag;
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return $this;
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}
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// --------------------------------------------------------------------------
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/**
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* Sets custom page header
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*
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* @param bool $html5
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* @return Page
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*/
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public function build_header($html5 = TRUE)
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{
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$data = array();
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//Set Meta Tags
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$this->meta = ($html5 == TRUE)
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? '<meta charset="utf-8" />'. $this->meta
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: $this->_meta(array(
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'http-equiv' => 'Content-Type',
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'content' => 'text/html; charset=utf-8',
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)) . $this->meta;
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$data['meta'] = $this->meta;
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//Set CSS
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if ($this->css !== "")
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{
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$data['css'] = $this->css;
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}
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else
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{
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//Set default CSS group
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$this->set_css_group(DEFAULT_CSS_GROUP);
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$data['css'] = $this->css;
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}
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//Set head javascript
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$data['head_js'] = ( ! empty($this->head_js)) ? $this->head_js : "";
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//Set Page Title
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$data['title'] = ($this->title !== '') ? $this->title : DEFAULT_TITLE;
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//Set Body Class
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$data['body_class'] = $this->body_class;
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//Set Body Id
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$data['body_id'] = $this->body_id;
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//Set Base HREF
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$data['base'] = $this->base;
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//Set individual head tags
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$data['head_tags'] = $this->head_tags;
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//Set Server Headers and Doctype
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$this->_headers($html5);
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//Output Header
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$this->append_output($this->load_view('header', $data, TRUE));
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return $this;
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}
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// --------------------------------------------------------------------------
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/**
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* Builds common footer with any additional js
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*/
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public function build_footer()
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{
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$data = array();
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$data['foot_js'] = ($this->foot_js != "") ? $this->foot_js : '';
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$this->append_output($this->load_view('footer', $data, TRUE));
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}
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// --------------------------------------------------------------------------
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/**
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* Script Tag
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*
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* Helper function for making script tags
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*
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* @param string $js
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* @param bool $domain
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* @return string
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*/
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private function script_tag($js, $domain = TRUE)
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{
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$path = CONTENT_DOMAIN;
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$js_file = "{$path}/js/{$js}.js";
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if ($domain == FALSE)
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{
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$js_file = $js;
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}
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$tag = '<script src="' . $js_file . '"></script>';
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return $tag;
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}
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// --------------------------------------------------------------------------
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/**
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* Set Message
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*
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* Adds a message to the page
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* @param string $type
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* @param string $message
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* @param bool $return
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* @return void
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*/
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public function set_message($type, $message, $return=FALSE)
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{
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$data['stat_class'] = $type;
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$data['message'] = $message;
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return $this->load_view('message', $data, $return);
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}
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// --------------------------------------------------------------------------
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/**
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* Redirect 303
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*
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* Shortcut function for 303 redirect
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* @param string $url
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*/
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public function redirect_303($url)
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{
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$this->set_header("HTTP/1.1 303 See Other");
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$this->set_header("Location:" . $url);
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}
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// --------------------------------------------------------------------------
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/**
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* Render
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*
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* Shortcut function for building a page
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* @param string $view
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* @param array $data
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*/
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public function render($view, $data=array())
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{
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$this->build_header();
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$this->load_view($view, $data);
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$this->set_foot_js_group('js');
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$this->build_footer();
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}
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// --------------------------------------------------------------------------
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/**
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* Render Message
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*
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* Render a full page message
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* @param string $type
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* @param string $message
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*/
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public function render_message($type, $message)
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{
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$this->render('message', [
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'stat_class' => $type,
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'message' => $message
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]);
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}
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// --------------------------------------------------------------------------
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/**
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* Output String
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*
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* Similar to render(), this is a shortcut
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* to output a string in the body of the
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* page.
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* @param string $string
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*/
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public function output_string($string)
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{
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$this->build_header();
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$this->append_output($string);
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$this->build_footer();
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}
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// --------------------------------------------------------------------------
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/**
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* Private helper function to generate meta tags
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*
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* @param array $params
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* @return string
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*/
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private function _meta($params)
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{
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$string = "<meta ";
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foreach ($params as $k => &$v)
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{
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$string .= $k.'="'.$v.'" ';
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}
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$string .= " />";
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return $string;
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}
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// --------------------------------------------------------------------------
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/**
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* Private helper function to generate link tags
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*
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* @param array $params
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* @return string
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*/
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private function _link_tag($params)
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{
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$string = "<link ";
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foreach ($params as $k => &$v)
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{
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$string .= $k . '="'.$v.'" ';
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}
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$string .= "/>";
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return $string;
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}
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// --------------------------------------------------------------------------
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/**
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* Function for loading a view
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*
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* @param string $file
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* @param array $data
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* @param bool $return
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* @return mixed
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*/
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public function load_view($file, array $data=array(), $return=FALSE)
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{
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$path = MM_APP_PATH . "views/{$file}.php";
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// Contain the content for buffering
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ob_start();
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// Extract the data array
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extract($data);
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// Include the file
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include($path);
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$buffer = ob_get_contents();
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ob_end_clean();
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if ($return == TRUE)
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{
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return $buffer;
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}
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else
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{
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$this->append_output($buffer);
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}
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}
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// --------------------------------------------------------------------------
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/**
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* Sets a header for later output
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*
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* @param string $key
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* @param string $val
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*/
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public function set_header($key, $val)
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{
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$this->headers[$key] = $val;
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}
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// --------------------------------------------------------------------------
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/**
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* Adds text to the output buffer
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*
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* @param string $string
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*/
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public function append_output($string)
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{
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$this->buffer .= $string;
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}
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// --------------------------------------------------------------------------
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/**
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* Sets the output buffer
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|
*
|
|
* @param string $string
|
|
*/
|
|
public function set_output($string)
|
|
{
|
|
$this->buffer = $string;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Sends headers and then removes them
|
|
*/
|
|
public function flush_headers()
|
|
{
|
|
// Set headers
|
|
foreach ($this->headers as $key => $val)
|
|
{
|
|
if ( ! isset($val))
|
|
{
|
|
header($key);
|
|
}
|
|
else
|
|
{
|
|
header("{$key}: {$val}");
|
|
}
|
|
}
|
|
|
|
// Empty headers
|
|
$this->headers = array();
|
|
}
|
|
}
|
|
|
|
// End of page.php
|