topical media & game development
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

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professional-php-04-CompositePatternDemo.php / php



  <html>
  <body>
  <head>
  <style>
  body {font : 12px verdana; font-weight:bold}
  td {font : 11px verdana;}
  </style>
  </head>
  
  <?php
  
  abstract class AbstractInstrument {
    
    private name;
    private category;
    private instruments = array();
    
    public function add(AbstractInstrument & instrument) {
       array_push(this->instruments, instrument);
    }
    
    public function remove(AbstractInstrument & instrument) {
       array_pop(this->instruments);
    }
          
    public function hasChildren() {
      return (bool)(count(this->instruments) > 0);
    }
      
    public function getChild(i) {
      return instruments[i];
    }
      
    public function getDescription() {
      echo "- one " . this->getName();
      if (this->hasChildren()) {
        echo " which includes:<br>";
        foreach(this->instruments as instrument) {
           echo "<table cellspacing=5 border=0><tr><td>&nbsp;&nbsp;&nbsp;</td><td>-";
           instrument->getDescription();
           echo "</td></tr></table>";
        }        
      }
    }
    
   public function setName(name) {
     this->name = name;
   }
    
   public function getName() {
     return this->name;
   }
           
   public function setCategory(category) {
      this->category = category;
   }
  
   public function getCategory() {
     return this->category;
    }
  }
  
  class Guitar extends AbstractInstrument {
    function __construct(name) {
      parent::setName(name);
      parent::setCategory("guitars");
    }      
  }
  
  class DrumSet extends AbstractInstrument {
    function __construct(name) {
     parent::setName(name);
     parent::setCategory("drums");
    }
  }
  
  class SnareDrum extends AbstractInstrument {
    function __construct(name) {
      parent::setName(name);
      parent::setCategory("snare drums");
    }
  }
  
  class BaseDrum extends AbstractInstrument {
    function __construct(name) {
      parent::setName(name);
      parent::setCategory("base drums");
    }
  }
  
  class Cymbal extends AbstractInstrument {
    function __construct(name) {
      parent::setName(name);
      parent::setCategory("cymbals");
    }
  }
  
  drums = new DrumSet("tama maple set");
  drums->add(new SnareDrum("snare drum"));
  drums->add(new BaseDrum("large bass drum"));
  
  cymbals = new Cymbal("zildjian cymbal set");
  cymbals->add(new Cymbal("small crash"));
  cymbals->add(new Cymbal("large high hat"));
  drums->add(cymbals);
  
  guitar = new Guitar("gibson les paul");
  
  echo "List of Instruments: <p>";
  drums->getDescription();
  guitar->getDescription();
  
  ?>
  
  </body>
  </html>
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 20/2/2008

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