<?
	/*
	RenaissanceCMS
	pageheading.inc.php | core version | last modified 23/10/11

	contains one class
		--	PageHeading
			methods for scribbling page headings

			this class is considered to be |in progress|
				--	existing methods may be substaintially altered
				--	new methods will be added
				--	methods may be removed

			this class contains one public method and five private methods
				--	all methods are considered to be |workable|


			--	[PUBLIC]

			--	PageHeading($page)
				constructor for this class
				--	$page is the page for which we're creating the heading
				++	populates $this->output with a string containing the heading


			--	[PRIVATE]

			--	fetch_page_list()
				fetches a list of pages in this heirachy
				++	populates $this->page_list [array] with an ordered array containing the page ids


			--	scribble_page_headings()
				creates a separated list of page headings for this title
				++	returns the list as a properly formatted string


			--	scribble_site_description()
				scribbles the site description, if we're showing it
				++	returns a string containing the site description


			--	scribble_site_heading()
				scribbles the site heading, if we're showing it
				++	returns a string containing the site heading


			--	scribble_title($page,$n)
				scribbles the title of the page, depending on our settings
				--	$page is an asset object for the page on which we're working
				--	$n is this page's position in the page list
				++	returns a properly formatted string containing the page title and a separator


			--	scribble_title_content($page)
				fetches the title of the content which this page is displaying, or the heading title if the content title cannot be found
				--	$page is an asset object for the page on which we're working
				++	returns [string] the title we want
	*/


class PageHeading extends scribbler{


	//input properties

	protected	$page;


	//internal properties

	protected	$config,
				$page_list;


	//output properties


	public function __construct($page){
		//put our data somewhere useful
		//if we're using an alternative title for this page
		//	--	just use that
		//else
		//	--	scribble the page headings part of the title
		//	--	scribble the site heading
		//	--	scribble the site description
		//	--	add it all together
		//strip any slashes from the title
		//put the output somewhere useful

		$file=new rFile('headings.js','system_settings');
		$this->config=$file->parse_ini();
		$this->page=$page;

		if($this->page->get('use_alternative_title')==1)
			$str=$this->page->get('alternative_title');
		else
			{
			$page_headings=$this->scribble_page_headings();

			$site_heading_str=$this->scribble_site_heading();
			$description_str=$this->scribble_site_description();

			$str=sprintf('%s%s%s',$page_headings,$site_heading_str,$description_str);
			}

		$str=stripslashes($str);	//HACK WARNING	--	this is a hack, as they're not being stripped automatically when reading from a file

		$this->output['xhtml']=$str;

	}

	function fetch_page_list(){
		//fetch the relations finder for this page
		//load the page's ancestors
		//add this page itself to the end of the list
		//populate the page list

		$relations=new PageRelations($this->page->get_id());

		$pages=$relations->get_ancestors();
		$pages[]=$this->page->get_id();

		$this->page_list=$pages;
	}

	function scribble_page_headings(){
		//if we're showing page headings
		//	--	if we're cascading the headings
		//		--	fetch the page list
		//		--	set some useful variables
		//		--	initiate a new asset creator
		//		--	loop through the list of pages
		//			--	create an asset for the current page
		//			--	if it's valid and displayable
		//				--	put the new title together and add it to our title string
		//				--	increment our counter
		//	--	else
		//		--	make a dummy page list (so our inclusion rules still work)
		//		--	scribble the title
		//
		//return the titles string

		$str='';

		if($this->config['show_page_heading'])
			if($this->config['cascade_headings'])
				{
				$this->fetch_page_list();

				$count=0;

				$c=new CreateAsset();

				foreach($this->page_list as $page)
					{
					$p=$c->create($page);

					if($p && $p->check('displayable'))
						{
						$str.=$this->scribble_title($p,$count);
						$count++;
						}
					}
				}
			else
				{
				$this->page_list=array('dummy');
				$str=$this->scribble_title($this->page,0);
				}

		return $str;
	}

	function scribble_site_description(){
		//if we're showing the description
		//	--	stick it to some dashes and add it in
		//else
		//	--	make it a blank string
		//return the string

		if($this->config['show_site_description'])
			$description_str=' -- '.$this->config['site_description'];
		else
			$description_str='';

		return $description_str;
	}

	function scribble_site_heading(){
		//if we're showing the site heading
		//	--	add it in
		//else
		//	--	make it a blank string
		//return the string

		if($this->config['show_site_heading'])
			$site_heading_str=$this->config['site_heading'];
		else
			$site_heading_str='';

		return $site_heading_str;
	}

	function scribble_title($page,$n){
		//if this is a content display page
		//	--	fetch the content's title
		//else
		//	--	use our heading title
		//add the separator and title together to form a new title
		//switch based on our inclusion rule
		//	--	if we're always adding the heading of this page
		//		--	add it
		//	--	if we're never adding it
		//		--	do nothing
		//	--	if we're only adding it when it's the last page
		//		--	if this is the last page in the list
		//			--	add it
		//	--	if we're only adding it when it's the first page
		//		--	if this is the first page in the list
		//			--	add it
		//	--	if we're only adding it when it's the only page
		//		--	if the list only has one page
		//			--	add it
		//	--	if we can't find any option
		//		--	create a blank string
		//return the title we've made

		if($page->get('for_content'))
			$title=$page->get('translated_title');
		else
			$title=$page->get('heading_title');

		$title=sprintf('%s %s ',$title,$this->config['site_heading_separator']);

		switch($page->get('include_page_heading'))
			{
			case 'always':
				$str=$title;
				break;

			case 'never':
				break;

			case 'when last page in list':
				if($n==(count($this->page_list)-1))
					$str=$title;
				break;

			case 'when first page in list':
				if($n==0)
					$str=$title;
				break;
			case 'when only page in list':
				if(count($this->page_list)==1)
					$str=$title;
				break;
			default:
				$str='';
				break;
			}

		return $str;
	}

}
?>
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