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Builder Design Pattern
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| abstract class AbstractPageBuilder { | |
| abstract function getPage(); | |
| } | |
| abstract class AbstractPageDirector { | |
| abstract function __construct(AbstractPageBuilder $builder_in); | |
| abstract function buildPage(); | |
| abstract function getPage(); | |
| } | |
| class HTMLPage { | |
| private $page = NULL; | |
| private $page_title = NULL; | |
| private $page_heading = NULL; | |
| private $page_text = NULL; | |
| function __construct() { | |
| } | |
| function showPage() { | |
| return $this->page; | |
| } | |
| function setTitle($title_in) { | |
| $this->page_title = $title_in; | |
| } | |
| function setHeading($heading_in) { | |
| $this->page_heading = $heading_in; | |
| } | |
| function setText($text_in) { | |
| $this->page_text .= $text_in; | |
| } | |
| function formatPage() { | |
| $this->page = '<html>'; | |
| $this->page .= '<head><title>'.$this->page_title.'</title></head>'; | |
| $this->page .= '<body>'; | |
| $this->page .= '<h1>'.$this->page_heading.'</h1>'; | |
| $this->page .= $this->page_text; | |
| $this->page .= '</body>'; | |
| $this->page .= '</html>'; | |
| } | |
| } | |
| class HTMLPageBuilder extends AbstractPageBuilder { | |
| private $page = NULL; | |
| function __construct() { | |
| $this->page = new HTMLPage(); | |
| } | |
| function setTitle($title_in) { | |
| $this->page->setTitle($title_in); | |
| } | |
| function setHeading($heading_in) { | |
| $this->page->setHeading($heading_in); | |
| } | |
| function setText($text_in) { | |
| $this->page->setText($text_in); | |
| } | |
| function formatPage() { | |
| $this->page->formatPage(); | |
| } | |
| function getPage() { | |
| return $this->page; | |
| } | |
| } | |
| class HTMLPageDirector extends AbstractPageDirector { | |
| private $builder = NULL; | |
| public function __construct(AbstractPageBuilder $builder_in) { | |
| $this->builder = $builder_in; | |
| } | |
| public function buildPage() { | |
| $this->builder->setTitle('Testing the HTMLPage'); | |
| $this->builder->setHeading('Testing the HTMLPage'); | |
| $this->builder->setText('Testing, testing, testing!'); | |
| $this->builder->setText('Testing, testing, testing, or!'); | |
| $this->builder->setText('Testing, testing, testing, more!'); | |
| $this->builder->formatPage(); | |
| } | |
| public function getPage() { | |
| return $this->builder->getPage(); | |
| } | |
| } | |
| writeln('BEGIN TESTING BUILDER PATTERN'); | |
| writeln(''); | |
| $pageBuilder = new HTMLPageBuilder(); | |
| $pageDirector = new HTMLPageDirector($pageBuilder); | |
| $pageDirector->buildPage(); | |
| $page = $pageDirector->GetPage(); | |
| writeln($page->showPage()); | |
| writeln(''); | |
| writeln('END TESTING BUILDER PATTERN'); | |
| function writeln($line_in) { | |
| echo $line_in."<br/>"; | |
| } |
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