Adapter.php

<?php

// kita membuat interface autenticate
interface DocManager
{
public function authenticate($user, $pwd);
public function getDocuments($folderid);
public function getDocumentsByType($folderid, $type);
public function getFolders($folderid=null);
public function saveDocument($document);
}


class Writely implements DocManager
{
    public function authenticate($user, $pwd)
    {
    //authenticate using Writely authentication scheme
    }
    public function getDocuments($folderid)
    {
    //get documents available in a folder
    }
    public function getDocumentsByType($folderid, $type)
    {
    //get documents of specific type from a folder
    }
    public function getFolders($folderid=null)
    {
    //get all folders under a specific folder
    }

    public function saveDocument($document)
    {
    //save the document
    }
}


class GoogleDocsAdapter implements DocManager
{
    private $manager;

    public function __construct()
    {
    $this->manager = new GoogleDocs();
    }

    public function authenticate($user, $pwd)
    {
    $this->manager->setUser($user);
    $this->manager->setPwd($pwd);
    $this->manager->authenticateByClientLogin();
    }

    public function getDocuments($folderid)
    {
    return $this->manager->getAllDocuments();
    }
    
    public function getDocumentsByType($folderid, $type)
    {
    //get documents using GoogleDocs object and return only
    //which match the type
    }
    public function getFolders($folderid=null)
    {
    //for example there is no folder in GoogleDocs, so
    //return anything.
    }
    public function saveDocument($document)
    {
    //save the document using GoogleDocs object
    }
}