"Remove dependency" implemented

Added a link to dependency views which causes dependencies to be removed
after a confirmation page.

includes/t-data/dao_tasks.inc.php

@@ -231,4 +231,10 @@ class DAO_Tasks
 		return $result[0]->error;
 	}
 
+	public function deleteDependency( $from , $to )
+	{
+		$this->query( 'DELETE FROM task_dependencies WHERE task_id = $1 AND task_id_depends = $2' )
+			->execute( $from , $to );
+	}
+
 }

includes/t-tasks/controllers.inc.php

@@ -385,3 +385,24 @@ class Ctrl_DependencyAdd
 		return null;
 	}
 }
+
+
+class Ctrl_DependencyDelete
+	extends Controller
+	implements FormAware
+{
+	private $form;
+
+	public function setForm( Form $form )
+	{
+		$this->form = $form;
+	}
+
+	public function handle( Page $page )
+	{
+		Loader::DAO( 'tasks' )->deleteDependency(
+			(int) $this->form->field( 'from' )->value( ) ,
+			(int) $this->form->field( 'to' )->value( ) );
+		return true;
+	}
+}

includes/t-tasks/package.inc.php

@@ -20,6 +20,8 @@ $package[ 'ctrls' ][] = 'delete_task_form';
 $package[ 'ctrls' ][] = 'delete_task';
 $package[ 'ctrls' ][] = 'dependency_add';
 $package[ 'ctrls' ][] = 'dependency_add_form';
+$package[ 'ctrls' ][] = 'dependency_delete';
+$package[ 'ctrls' ][] = 'dependency_delete_form';
 $package[ 'ctrls' ][] = 'edit_note_form';
 $package[ 'ctrls' ][] = 'edit_note';
 $package[ 'ctrls' ][] = 'edit_task_form';

includes/t-tasks/page_controllers.inc.php

@@ -447,3 +447,73 @@ class Ctrl_DependencyAddForm
 		return $result;
 	}
 }
+
+
+class Ctrl_DependencyDeleteForm
+	extends Controller
+{
+
+	public function handle( Page $page )
+	{
+		$tasks = Loader::DAO( 'tasks' );
+
+		// Get the task a dependency is being removed from
+		try {
+			$from = (int) $this->getParameter( 'from' );
+		} catch ( ParameterException $e ) {
+			return 'tasks';
+		}
+		$task = $tasks->get( $from );
+		if ( $task === null ) {
+			return 'tasks';
+		}
+		$page->setTitle( $task->title . ' (task)' );
+		if ( $task->completed_at !== null ) {
+			return 'tasks/view?id=' . $from;
+		}
+
+		// Get the dependency being deleted
+		try {
+			$to = (int) $this->getParameter( 'to' );
+		} catch ( ParameterException $e ) {
+			return 'tasks/view?id=' . $from;
+		}
+		$dependency = $tasks->get( $to );
+		if ( $dependency === null || ! $this->checkDependency( $task  , $to ) ) {
+			return 'tasks/view?id=' . $from;
+		}
+
+		// Generate confirmation text
+		$confText = HTML::make( 'div' )
+			->appendElement( HTML::make( 'p' )
+				->appendText( 'The selected task will no longer depend on ' )
+				->appendElement( HTML::make( 'strong' )
+					->appendText( $dependency->title ) )
+				->appendText( '.' ) );
+
+		// Generate form
+		return Loader::Create( 'Form' , 'Delete dependency' , 'delete-dep' )
+			->addField( Loader::Create( 'Field' , 'from' , 'hidden' )
+				->setDefaultValue( $from ) )
+			->addField( Loader::Create( 'Field' , 'to' , 'hidden' )
+				->setDefaultValue( $to ) )
+			->addField( Loader::Create( 'Field' , 'confirm' , 'html' )->setDefaultValue( $confText ) )
+			->setURL( 'tasks/view?id=' . $from )
+			->addController( Loader::Ctrl( 'dependency_delete' ) )
+			->controller( );
+
+	}
+
+
+	private function checkDependency( $task , $to )
+	{
+		foreach ( $task->dependencies as $dep ) {
+			if ( $dep->id == $to ) {
+				return true;
+			}
+		}
+		return false;
+	}
+}
+
+

includes/t-tasks/pages.inc.php

@@ -17,6 +17,7 @@ class Page_TasksTasks
 			'notes/edit'	=> 'edit_note_form' ,
 			'notes/delete'	=> 'delete_note_form' ,
 			'deps/add'	=> 'dependency_add_form' ,
+			'deps/delete'	=> 'dependency_delete_form' ,
 		));
 	}
 

includes/t-tasks/views.inc.php

@@ -306,14 +306,26 @@ class View_TaskDependencies
 					->appendElement( $itemList ) );
 				$prevItem = $dependency->item;
 			}
+
+			$entry = HTML::make( 'li' )->appendElement(
 				$link = HTML::make( 'a' )
 					->setAttribute( 'href' , $this->base . '/tasks/view?id=' . $dependency->id )
-				->appendText( $dependency->title );
+					->appendText( $dependency->title ) );
 			if ( ! $this->reverse ) {
 				$link->setAttribute( 'class' , ( $dependency->completed == 't' )
 					? 'satisfied' : 'missing' );
+
+				if ( $this->task->completed_at === null ) {
+					$entry->appendText( ' (' )
+						->appendElement( HTML::make( 'a' )
+							->setAttribute( 'href' , $this->base . '/tasks/deps/delete?from='
+								. $this->task->id . '&to=' . $dependency->id )
+							->appendText( 'remove') )
+						->appendText( ')' );
 				}
-			$itemList->appendElement( HTML::make( 'li' )->appendElement( $link ) );
+			}
+
+			$itemList->appendElement( $entry );
 		}
 		return $list;
 	}