Initial import of tasks application

This initial import is a heavily modified version of the code I had
here, as Arse was modified for other purposes in the meantime and the
application no longer worked with it.

In addition:
 * I did not import the user management part yet,
 * task dependencies are supported in-base, but there is no interface
for that yet.

includes/t-items/controllers.inc.php

@@ -0,0 +1,282 @@
+<?php
+
+
+class Ctrl_ItemsTree
+	extends Controller
+	implements TitleProvider
+{
+	private $useParameter;
+
+	public function __construct( $useParameter = false )
+	{
+		$this->useParameter = $useParameter;
+	}
+
+	public function handle( Page $page )
+	{
+		$items = Loader::DAO( 'items' );
+		$tree = $items->getTree( );
+		$items->countActiveTasks( );
+
+		if ( $this->useParameter ) {
+			$root = (int) $this->getParameter( $this->useParameter , 'GET' );
+		} else {
+			$root = null;
+		}
+
+		$buttonURL = 'items/add';
+		if ( $root != null ) {
+			$rootObj = $items->get( $root );
+			$tree = $items->getAll( $rootObj->children );
+			$boxTitle = 'Child items';
+			$buttonURL .= "?from=$root";
+		} else {
+			$boxTitle = null;
+		}
+
+		return Loader::View( 'box' , $boxTitle , Loader::View( 'items_tree' , $tree ) )
+			->setClass( 'list' )
+			->addButton( BoxButton::create( 'Add item' , $buttonURL )
+				->setClass( 'list-add' ) );
+	}
+
+
+	public function getTitle( )
+	{
+		return 'Items';
+	}
+}
+
+
+class Ctrl_ItemDetails
+	extends Controller
+{
+	private $item;
+
+	public function __construct( Data_Item $item )
+	{
+		$this->item = $item;
+	}
+
+	public function handle( Page $page )
+	{
+		$items = Loader::DAO( 'items');
+		$items->getTree( );
+
+		$box = Loader::View( 'box' , 'Details' , Loader::View( 'item_details' , $this->item ) )
+			->addButton( BoxButton::create( 'Edit item' , 'items/edit?id=' . $this->item->id )
+				->setClass( 'icon edit' ) );
+
+		if ( $items->canMove( $this->item ) ) {
+			$box->addButton( BoxButton::create( 'Move item' , 'items/move?id=' . $this->item->id )
+				->setClass( 'icon move' ) );
+		}
+
+		if ( $items->canDelete( $this->item ) ) {
+			$box->addButton( BoxButton::create( 'Delete item' , 'items/delete?id=' . $this->item->id )
+				->setClass( 'icon delete' ) );
+		}
+
+		return $box;
+	}
+
+}
+
+
+class Ctrl_AddItem
+	extends Controller
+	implements FormAware
+{
+	private $form;
+
+	public function setForm( Form $form )
+	{
+		$this->form = $form;
+	}
+
+	public function handle( Page $page )
+	{
+		$name = $this->form->field( 'name' );
+		$before = $this->form->field( 'before' );
+		list( $after , $id ) = explode( ':' , $before->value( ) );
+
+		$items = Loader::DAO( 'items' );
+		if ( $id === '' ) {
+			$error = $items->createLast( $name->value( ) );
+		} elseif ( $after == 1 ) {
+			$error = $items->createUnder( $name->value( ) , $id );
+		} else {
+			$error = $items->createBefore( $name->value( ) , $id );
+		}
+
+		switch ( $error ) {
+
+		case 0:
+			return true;
+
+		case 1:
+			$name->putError( 'This name is not unique' );
+			break;
+
+		case 2:
+			$before->putError( 'The item you selected no longer exists' );
+			break;
+
+		default:
+			$name->putError( 'An unknown error occurred (' . $error . ')' );
+			break;
+
+		}
+
+		return null;
+	}
+}
+
+
+class Ctrl_MoveItem
+	extends Controller
+	implements FormAware
+{
+	private $form;
+
+
+	public function setForm( Form $form )
+	{
+		$this->form = $form;
+	}
+
+
+	public function handle( Page $page )
+	{
+		$srcId = (int) $this->form->field( 'id' )->value( );
+		$dest = $this->form->field( 'destination' );
+		list( $after , $id ) = explode( ':' , $dest->value( ) );
+
+		$items = Loader::DAO( 'items' );
+		if ( $id === '' ) {
+			$error = $items->moveLast( $srcId );
+		} elseif ( $after == 1 ) {
+			$error = $items->moveUnder( $srcId , $id );
+		} else {
+			$error = $items->moveBefore( $srcId , $id );
+		}
+
+		switch ( $error ) {
+
+		case 0:
+			return true;
+
+		case 1:
+			$dest->putError( 'Invalid destination' );
+			break;
+
+		case 2:
+			$before->putError( 'The place you selected no longer exists.' );
+			break;
+
+		default:
+			$name->putError( 'An unknown error occurred (' . $error . ')' );
+			break;
+
+		}
+
+		return null;
+	}
+
+}
+
+
+class Ctrl_DeleteItem
+	extends Controller
+	implements FormAware
+{
+	private $form;
+
+
+	public function setForm( Form $form )
+	{
+		$this->form = $form;
+	}
+
+
+	public function handle( Page $page )
+	{
+		$id = (int) $this->form->field( 'id' )->value( );
+
+		$items = Loader::DAO( 'items' );
+		if ( ! $items->canDelete( $items->get( $id ) ) ) {
+			return false;
+		}
+		$items->destroy( $id );
+		return true;
+	}
+
+}
+
+
+class Ctrl_EditItem
+	extends Controller
+	implements FormAware
+{
+	private $form;
+
+
+	public function setForm( Form $form )
+	{
+		$this->form = $form;
+	}
+
+
+	public function handle( Page $page )
+	{
+		$id = (int) $this->form->field( 'id' )->value( );
+		$items = Loader::DAO( 'items' );
+		$item = $items->get( $id );
+
+		$name = $this->form->field( 'name' );
+		if ( $name->value( ) === $item->name ) {
+			return true;
+		}
+
+		$error = $items->rename( $id , $name->value( ) );
+		switch ( $error ) {
+
+		case 0:
+			return true;
+
+		case 1:
+			$name->putError( 'Ce nom n\'est pas unique' );
+			break;
+
+		default:
+			$name->putError( 'Une erreur inconnue s\'est produite (' . $error . ')' );
+			break;
+
+		}
+
+		return null;
+	}
+
+}
+
+
+class Ctrl_ItemTasks
+	extends Controller
+{
+	private $item;
+
+	public function __construct( Data_Item $item )
+	{
+		$this->item = $item;
+	}
+
+
+	public function handle( Page $page )
+	{
+		$tasks = Loader::DAO( 'tasks' )->getTasksAt( $this->item );
+
+		return Loader::View( 'box' , 'Tasks' , Loader::View( 'tasks' , $tasks ) )
+				->addButton( BoxButton::create( 'Add task' , 'tasks/add?to=' . $this->item->id )
+				->setClass( 'list-add' ) );
+	}
+}