silverstripe-userforms/code/model/editableformfields/EditableLiteralField.php

<?php

/**
 * Editable Literal Field. A literal field is just a blank slate where
 * you can add your own HTML / Images / Flash
 *
 * @package userforms
 */

class EditableLiteralField extends EditableFormField {

	private static $singular_name = 'HTML Block';

	private static $plural_name = 'HTML Blocks';

	/**
	 * Mark as literal only
	 *
	 * @config
	 * @var bool
	 */
	private static $literal = true;

	/**
	 * Get the name of the editor config to use for HTML sanitisation. Defaults to the active config.
	 *
	 * @var string
	 * @config
	 */
	private static $editor_config = null;

	private static $db = array(
		'Content' => 'HTMLText', // From CustomSettings
		'HideFromReports' => 'Boolean(0)' // from CustomSettings
	);

	private static $defaults = array(
		'HideFromReports' => false
	);

	/**
	 * Returns the {@see HtmlEditorConfig} instance to use for sanitisation
	 *
	 * @return HtmlEditorConfig
	 */
	protected function getEditorConfig() {
		$editorConfig = $this->config()->editor_config;
		if($editorConfig) return HtmlEditorConfig::get($editorConfig);
		return HtmlEditorConfig::get_active();
	}

	/**
	 * Safely sanitise html content, if enabled
	 *
	 * @param string $content Raw html
	 * @return string Safely sanitised html
	 */
	protected function sanitiseContent($content) {
		// Check if sanitisation is enabled
		if(!HtmlEditorField::config()->sanitise_server_side) return $content;

		// Perform sanitisation
		$htmlValue = Injector::inst()->create('HTMLValue', $content);
		$santiser = Injector::inst()->create('HtmlEditorSanitiser', $this->getEditorConfig());
		$santiser->sanitise($htmlValue);
		return $htmlValue->getContent();
	}

	/**
	 * Get HTML Content of this literal field
	 *
	 * @return string
	 */
	public function getContent() {
		// Apply html editor sanitisation rules
		$content = $this->getField('Content');
		return $this->sanitiseContent($content);
	}

	/**
	 * Set the content with the given value
	 *
	 * @param string $content
	 */
	public function setContent($content) {
		// Apply html editor sanitisation rules
		$content = $this->sanitiseContent($content);
		$this->setField('Content', $content);
	}

	/**
	 * @return FieldList
	 */
	public function getCMSFields() {
		$fields = parent::getCMSFields();

		$fields->removeByName(array('Default', 'Validation', 'RightTitle'));

		$fields->addFieldsToTab('Root.Main', array(
			HTMLEditorField::create('Content', _t('EditableLiteralField.CONTENT', 'HTML'))
				->setRows(4)
				->setColumns(20),
			CheckboxField::create(
				'HideFromReports',
				_t('EditableLiteralField.HIDEFROMREPORT', 'Hide from reports?')
			)
		));

		return $fields;
	}

	public function getFormField() {
		// Build label and css classes
		$label = '';
		$classes = $this->ExtraClass;
		if(empty($this->Title)) {
			$classes .= " nolabel";
		} else {
			$label = "<label class='left'>{$this->EscapedTitle}</label>";
		}

		$field = new LiteralField(
			"LiteralField[{$this->ID}]",
			sprintf(
				"<div id='%s' class='field text%s'>
					%s
					<div class='middleColumn literalFieldArea'>%s</div>".
				"</div>",
				Convert::raw2htmlname($this->Name),
				Convert::raw2att($classes),
				$label,
				$this->Content
			)
		);

		// When dealing with literal fields there is no further customisation that can be added at this point
		return $field;
	}

	public function showInReports() {
		return ! $this->HideFromReports;
	}
}