Form fields clean-up

Added a FieldView interface which must be implemented by field
renderers. The form's main view will look for FieldView implementations
to determine how to render specific field types. The only exception are
hidden fields, which are handled separately.

includes/form/field_views.inc.php

@@ -0,0 +1,124 @@
+<?php
+
+interface FieldView
+{
+
+	public function getFieldType( );
+
+	public function render( Field $field , $prefix );
+
+}
+
+
+class FieldView_Label
+	implements FieldView
+{
+
+	public function getFieldType( )
+	{
+		return 'label';
+	}
+
+	public function render( Field $field , $prefix )
+	{
+		return HTML::make( 'span' )
+			->appendText( $field->value( ) )
+			->setAttribute( 'id' , $prefix . 'field' );
+	}
+}
+
+
+class FieldView_Text
+	implements FieldView
+{
+
+	public function getFieldType( )
+	{
+		return 'text';
+	}
+
+	public function render( Field $field , $prefix )
+	{
+		return HTML::make( 'input' )
+			->setAttribute( 'type' , 'text' )
+			->setAttribute( 'name' , $field->name( ) )
+			->setAttribute( 'id' , $prefix . 'field' )
+			->setAttribute( 'class' , 'form-text-field' )
+			->setAttribute( 'value' , HTML::from( $field->value( ) ) );
+	}
+}
+
+
+class FieldView_Password
+	implements FieldView
+{
+
+	public function getFieldType( )
+	{
+		return 'password';
+	}
+
+	public function render( Field $field , $prefix )
+	{
+		return HTML::make( 'input' )
+			->setAttribute( 'type' , 'password' )
+			->setAttribute( 'name' , $field->name( ) )
+			->setAttribute( 'id' , $prefix . 'field' )
+			->setAttribute( 'class' , 'form-text-field' );
+	}
+
+}
+
+
+class FieldView_TextArea
+	implements FieldView
+{
+
+	public function getFieldType( )
+	{
+		return 'textarea';
+	}
+
+	public function render( Field $field , $prefix )
+	{
+		return HTML::make( 'textarea' )
+			->setAttribute( 'name' , $field->name( ) )
+			->setAttribute( 'id' , $prefix . 'field' )
+			->setAttribute( 'class' , 'form-text-field' )
+			->appendText( (string) $field->value( ) );
+	}
+
+}
+
+
+class FieldView_Select
+	implements FieldView
+{
+
+	public function getFieldType( )
+	{
+		return 'select';
+	}
+
+	public function render( Field $field , $prefix )
+	{
+		$select = HTML::make( 'select' )
+			->setAttribute( 'name' , $field->name( ) )
+			->setAttribute( 'id' , $prefix . 'field' )
+			->setAttribute( 'class' , 'form-select' );
+
+		$selected = $field->value( );
+		foreach ( $field->options( ) as $value => $obj ) {
+			$option = HTML::make( 'option' )
+				->setAttribute( 'value' , $value )
+				->setAttribute( 'disabled' , $obj->disabled ? 'disabled' : null )
+				->appendText( $obj->text );
+			if ( "$value" === "$selected" ) {
+				$option->setAttribute( 'selected' , 'selected' );
+			}
+			$select->appendElement( $option );
+		}
+		return $select;
+	}
+
+}