tags, which are then converted with JavaScript.
*
* @package forms
* @subpackage fields-formattedinput
*/
class HtmlEditorField extends TextareaField {
/**
* @config
* @var Boolean Use TinyMCE's GZIP compressor
*/
private static $use_gzip = true;
/**
* @config
* @var Integer Default insertion width for Images and Media
*/
private static $insert_width = 600;
/**
* @config
* @var bool Should we check the valid_elements (& extended_valid_elements) rules from HtmlEditorConfig server side?
*/
private static $sanitise_server_side = false;
protected $rows = 30;
/**
* Includes the JavaScript neccesary for this field to work using the {@link Requirements} system.
*/
public static function include_js() {
require_once 'tinymce/tiny_mce_gzip.php';
$configObj = HtmlEditorConfig::get_active();
if(Config::inst()->get('HtmlEditorField', 'use_gzip')) {
$internalPlugins = array();
foreach($configObj->getPlugins() as $plugin => $path) if(!$path) $internalPlugins[] = $plugin;
$tag = TinyMCE_Compressor::renderTag(array(
'url' => THIRDPARTY_DIR . '/tinymce/tiny_mce_gzip.php',
'plugins' => implode(',', $internalPlugins),
'themes' => 'advanced',
'languages' => $configObj->getOption('language')
), true);
preg_match('/src="([^"]*)"/', $tag, $matches);
Requirements::javascript(html_entity_decode($matches[1]));
} else {
Requirements::javascript(MCE_ROOT . 'tiny_mce_src.js');
}
Requirements::customScript($configObj->generateJS(), 'htmlEditorConfig');
}
/**
* @see TextareaField::__construct()
*/
public function __construct($name, $title = null, $value = '') {
parent::__construct($name, $title, $value);
self::include_js();
}
/**
* @return string
*/
public function Field($properties = array()) {
// mark up broken links
$value = Injector::inst()->create('HTMLValue', $this->value);
if($links = $value->getElementsByTagName('a')) foreach($links as $link) {
$matches = array();
if(preg_match('/\[sitetree_link(?:\s*|%20|,)?id=([0-9]+)\]/i', $link->getAttribute('href'), $matches)) {
if(!DataObject::get_by_id('SiteTree', $matches[1])) {
$class = $link->getAttribute('class');
$link->setAttribute('class', ($class ? "$class ss-broken" : 'ss-broken'));
}
}
if(preg_match('/\[file_link(?:\s*|%20|,)?id=([0-9]+)\]/i', $link->getAttribute('href'), $matches)) {
if(!DataObject::get_by_id('File', $matches[1])) {
$class = $link->getAttribute('class');
$link->setAttribute('class', ($class ? "$class ss-broken" : 'ss-broken'));
}
}
}
$properties['Value'] = htmlentities($value->getContent(), ENT_COMPAT, 'UTF-8');
$obj = $this->customise($properties);
return $obj->renderWith($this->getTemplates());
}
public function getAttributes() {
return array_merge(
parent::getAttributes(),
array(
'tinymce' => 'true',
'style' => 'width: 97%; height: ' . ($this->rows * 16) . 'px', // prevents horizontal scrollbars
'value' => null,
)
);
}
public function saveInto(DataObjectInterface $record) {
if($record->hasField($this->name) && $record->escapeTypeForField($this->name) != 'xml') {
throw new Exception (
'HtmlEditorField->saveInto(): This field should save into a HTMLText or HTMLVarchar field.'
);
}
$htmlValue = Injector::inst()->create('HTMLValue', $this->value);
// Sanitise if requested
if($this->config()->sanitise_server_side) {
$santiser = Injector::inst()->create('HtmlEditorSanitiser', HtmlEditorConfig::get_active());
$santiser->sanitise($htmlValue);
}
// Resample images and add default attributes
if($images = $htmlValue->getElementsByTagName('img')) foreach($images as $img) {
// strip any ?r=n data from the src attribute
$img->setAttribute('src', preg_replace('/([^\?]*)\?r=[0-9]+$/i', '$1', $img->getAttribute('src')));
// Resample the images if the width & height have changed.
if($image = File::find(urldecode(Director::makeRelative($img->getAttribute('src'))))){
$width = (int)$img->getAttribute('width');
$height = (int)$img->getAttribute('height');
if($width && $height && ($width != $image->getWidth() || $height != $image->getHeight())) {
//Make sure that the resized image actually returns an image:
$resized=$image->ResizedImage($width, $height);
if($resized) $img->setAttribute('src', $resized->getRelativePath());
}
}
// Add default empty title & alt attributes.
if(!$img->getAttribute('alt')) $img->setAttribute('alt', '');
if(!$img->getAttribute('title')) $img->setAttribute('title', '');
}
// Store into record
$record->{$this->name} = $htmlValue->getContent();
}
/**
* @return HtmlEditorField_Readonly
*/
public function performReadonlyTransformation() {
$field = $this->castedCopy('HtmlEditorField_Readonly');
$field->dontEscape = true;
return $field;
}
public function performDisabledTransformation() {
return $this->performReadonlyTransformation();
}
}
/**
* Readonly version of an {@link HTMLEditorField}.
* @package forms
* @subpackage fields-formattedinput
*/
class HtmlEditorField_Readonly extends ReadonlyField {
public function Field($properties = array()) {
$valforInput = $this->value ? Convert::raw2att($this->value) : "";
return "id() . "\">"
. ( $this->value && $this->value != '
' ? $this->value : '(not set) ' )
. "
',
Controller::join_links($this->controller->Link(), $this->name, 'LinkForm', 'forTemplate'),
Controller::join_links($this->controller->Link(), $this->name, 'MediaForm', 'forTemplate')
);
}
/**
* Searches the SiteTree for display in the dropdown
*
* @return callback
*/
public function siteTreeSearchCallback($sourceObject, $labelField, $search) {
return DataObject::get($sourceObject, "\"MenuTitle\" LIKE '%$search%' OR \"Title\" LIKE '%$search%'");
}
/**
* Return a {@link Form} instance allowing a user to
* add links in the TinyMCE content editor.
*
* @return Form
*/
public function LinkForm() {
$siteTree = TreeDropdownField::create('internal', _t('HtmlEditorField.PAGE', "Page"),
'SiteTree', 'ID', 'MenuTitle', true);
// mimic the SiteTree::getMenuTitle(), which is bypassed when the search is performed
$siteTree->setSearchFunction(array($this, 'siteTreeSearchCallback'));
$numericLabelTmpl = '%d %s '
. sprintf($numericLabelTmpl, '2', _t('HtmlEditorField.DETAILS', 'Details')) . '
'
),
$siteTree,
TextField::create('external', _t('HtmlEditorField.URL', 'URL'), 'http://'),
EmailField::create('email', _t('HtmlEditorField.EMAIL', 'Email address')),
TreeDropdownField::create('file', _t('HtmlEditorField.FILE', 'File'), 'File', 'ID', 'Title', true),
TextField::create('Anchor', _t('HtmlEditorField.ANCHORVALUE', 'Anchor')),
TextField::create('Description', _t('HtmlEditorField.LINKDESCR', 'Link description')),
CheckboxField::create('TargetBlank',
_t('HtmlEditorField.LINKOPENNEWWIN', 'Open link in a new window?')),
HiddenField::create('Locale', null, $this->controller->Locale)
)
),
new FieldList(
ResetFormAction::create('remove', _t('HtmlEditorField.BUTTONREMOVELINK', 'Remove link'))
->addExtraClass('ss-ui-action-destructive')
->setUseButtonTag(true)
,
FormAction::create('insert', _t('HtmlEditorField.BUTTONINSERTLINK', 'Insert link'))
->addExtraClass('ss-ui-action-constructive')
->setAttribute('data-icon', 'accept')
->setUseButtonTag(true)
)
);
$headerWrap->addExtraClass('CompositeField composite cms-content-header nolabel ');
$contentComposite->addExtraClass('ss-insert-link content');
$form->unsetValidator();
$form->loadDataFrom($this);
$form->addExtraClass('htmleditorfield-form htmleditorfield-linkform cms-dialog-content');
$this->extend('updateLinkForm', $form);
return $form;
}
/**
* Return a {@link Form} instance allowing a user to
* add images and flash objects to the TinyMCE content editor.
*
* @return Form
*/
public function MediaForm() {
// TODO Handle through GridState within field - currently this state set too late to be useful here (during
// request handling)
$parentID = $this->controller->getRequest()->requestVar('ParentID');
$fileFieldConfig = GridFieldConfig::create()->addComponents(
new GridFieldFilterHeader(),
new GridFieldSortableHeader(),
new GridFieldDataColumns(),
new GridFieldPaginator(5),
// TODO Shouldn't allow delete here, its too confusing with a "remove from editor view" action.
// Remove once we can fit the search button in the last actual title column
new GridFieldDeleteAction(),
new GridFieldDetailForm()
);
$fileField = new GridField('Files', false, null, $fileFieldConfig);
$fileField->setList($this->getFiles($parentID));
$fileField->setAttribute('data-selectable', true);
$fileField->setAttribute('data-multiselect', true);
$columns = $fileField->getConfig()->getComponentByType('GridFieldDataColumns');
$columns->setDisplayFields(array(
'CMSThumbnail' => false,
'Name' => _t('File.Name'),
));
$numericLabelTmpl = '%d %s '.sprintf($numericLabelTmpl, '1', _t('HtmlEditorField.FindInFolder', 'Find in Folder')).' '),
$select = TreeDropdownField::create('ParentID', "", 'Folder')->addExtraClass('noborder'),
$fileField
);
$fromCMS->addExtraClass('content ss-uploadfield');
$select->addExtraClass('content-select');
$fromWeb = new CompositeField(
new LiteralField('headerURL',
'' . sprintf($numericLabelTmpl, '1', _t('HtmlEditorField.ADDURL', 'Add URL')) . ' '),
$remoteURL = new TextField('RemoteURL', 'http://'),
new LiteralField('addURLImage',
'' .
_t('HtmlEditorField.BUTTONADDURL', 'Add url').' ')
);
$remoteURL->addExtraClass('remoteurl');
$fromWeb->addExtraClass('content ss-uploadfield');
Requirements::css(FRAMEWORK_DIR . '/css/AssetUploadField.css');
$computerUploadField = Object::create('UploadField', 'AssetUploadField', '');
$computerUploadField->setConfig('previewMaxWidth', 40);
$computerUploadField->setConfig('previewMaxHeight', 30);
$computerUploadField->addExtraClass('ss-assetuploadfield');
$computerUploadField->removeExtraClass('ss-uploadfield');
$computerUploadField->setTemplate('HtmlEditorField_UploadField');
$computerUploadField->setFolderName(Config::inst()->get('Upload', 'uploads_folder'));
$tabSet = new TabSet(
"MediaFormInsertMediaTabs",
Tab::create(
'FromComputer',
_t('HtmlEditorField.FROMCOMPUTER','From your computer'),
$computerUploadField
)->addExtraClass('htmleditorfield-from-computer'),
Tab::create(
'FromWeb',
_t('HtmlEditorField.FROMWEB', 'From the web'),
$fromWeb
)->addExtraClass('htmleditorfield-from-web'),
Tab::create(
'FromCms',
_t('HtmlEditorField.FROMCMS','From the CMS'),
$fromCMS
)->addExtraClass('htmleditorfield-from-cms')
);
$tabSet->addExtraClass('cms-tabset-primary');
$allFields = new CompositeField(
$tabSet,
new LiteralField('headerEdit', ''),
$editComposite = new CompositeField(
new LiteralField('contentEdit', '
')
)
);
$allFields->addExtraClass('ss-insert-media');
$headings = new CompositeField(
new LiteralField(
'Heading',
sprintf('',
_t('HtmlEditorField.INSERTMEDIA', 'Insert Media')).
sprintf('',
_t('HtmlEditorField.UpdateMEDIA', 'Update Media'))
)
);
$headings->addExtraClass('cms-content-header');
$editComposite->addExtraClass('ss-assetuploadfield');
$fields = new FieldList(
$headings,
$allFields
);
$actions = new FieldList(
FormAction::create('insertmedia', _t('HtmlEditorField.BUTTONINSERT', 'Insert'))
->addExtraClass('ss-ui-action-constructive media-insert')
->setAttribute('data-icon', 'accept')
->setUseButtonTag(true),
FormAction::create('insertmedia', _t('HtmlEditorField.BUTTONUpdate', 'Update'))
->addExtraClass('ss-ui-action-constructive media-update')
->setAttribute('data-icon', 'accept')
->setUseButtonTag(true)
);
$form = new Form(
$this->controller,
"{$this->name}/MediaForm",
$fields,
$actions
);
$form->unsetValidator();
$form->disableSecurityToken();
$form->loadDataFrom($this);
$form->addExtraClass('htmleditorfield-form htmleditorfield-mediaform cms-dialog-content');
// TODO Re-enable once we remove $.metadata dependency which currently breaks the JS due to $.ui.widget
// $form->setAttribute('data-urlViewfile', $this->controller->Link($this->name));
// Allow other people to extend the fields being added to the imageform
$this->extend('updateMediaForm', $form);
return $form;
}
/**
* View of a single file, either on the filesystem or on the web.
*/
public function viewfile($request) {
// TODO Would be cleaner to consistently pass URL for both local and remote files,
// but GridField doesn't allow for this kind of metadata customization at the moment.
if($url = $request->getVar('FileURL')) {
if(Director::is_absolute_url($url) && !Director::is_site_url($url)) {
$url = $url;
$file = new File(array(
'Title' => basename($url),
'Filename' => $url
));
} else {
$url = Director::makeRelative($request->getVar('FileURL'));
$url = preg_replace('/_resampled\/[^-]+-/', '', $url);
$file = File::get()->filter('Filename', $url)->first();
if(!$file) $file = new File(array(
'Title' => basename($url),
'Filename' => $url
));
}
} elseif($id = $request->getVar('ID')) {
$file = DataObject::get_by_id('File', $id);
$url = $file->RelativeLink();
} else {
throw new LogicException('Need either "ID" or "FileURL" parameter to identify the file');
}
// Instanciate file wrapper and get fields based on its type
// Check if appCategory is an image and exists on the local system, otherwise use oEmbed to refference a
// remote image
if($file && $file->appCategory() == 'image' && Director::is_site_url($url)) {
$fileWrapper = new HtmlEditorField_Image($url, $file);
} elseif(!Director::is_site_url($url)) {
$fileWrapper = new HtmlEditorField_Embed($url, $file);
} else {
$fileWrapper = new HtmlEditorField_File($url, $file);
}
$fields = $this->getFieldsForFile($url, $fileWrapper);
$this->extend('updateFieldsForFile', $fields, $url, $fileWrapper);
return $fileWrapper->customise(array(
'Fields' => $fields,
))->renderWith($this->templateViewFile);
}
/**
* Similar to {@link File->getCMSFields()}, but only returns fields
* for manipulating the instance of the file as inserted into the HTML content,
* not the "master record" in the database - hence there's no form or saving logic.
*
* @param String Relative or absolute URL to file
* @return FieldList
*/
protected function getFieldsForFile($url, $file) {
$fields = $this->extend('getFieldsForFile', $url, $file);
if(!$fields) {
if($file instanceof HtmlEditorField_Embed) {
$fields = $this->getFieldsForOembed($url, $file);
} elseif($file->Extension == 'swf') {
$fields = $this->getFieldsForFlash($url, $file);
} else {
$fields = $this->getFieldsForImage($url, $file);
}
$fields->push(new HiddenField('URL', false, $url));
}
$this->extend('updateFieldsForFile', $fields, $url, $file);
return $fields;
}
/**
* @return FieldList
*/
protected function getFieldsForOembed($url, $file) {
if(isset($file->Oembed->thumbnail_url)) {
$thumbnailURL = $file->Oembed->thumbnail_url;
} elseif($file->Type == 'photo') {
$thumbnailURL = $file->Oembed->url;
} else {
$thumbnailURL = FRAMEWORK_DIR . '/images/default_media.png';
}
$fields = new FieldList(
$filePreview = CompositeField::create(
CompositeField::create(
new LiteralField(
"ImageFull",
"%s ', $url, $url)
)->addExtraClass('text-wrap')
)
)->setName("FilePreviewData")->addExtraClass('cms-file-info-data')
)->setName("FilePreview")->addExtraClass('cms-file-info'),
new TextField('CaptionText', _t('HtmlEditorField.CAPTIONTEXT', 'Caption text')),
DropdownField::create(
'CSSClass',
_t('HtmlEditorField.CSSCLASS', 'Alignment / style'),
array(
'leftAlone' => _t('HtmlEditorField.CSSCLASSLEFTALONE', 'On the left, on its own.'),
'center' => _t('HtmlEditorField.CSSCLASSCENTER', 'Centered, on its own.'),
'left' => _t('HtmlEditorField.CSSCLASSLEFT', 'On the left, with text wrapping around.'),
'right' => _t('HtmlEditorField.CSSCLASSRIGHT', 'On the right, with text wrapping around.')
)
)->addExtraClass('last')
);
if($file->Width != null){
$fields->push(
FieldGroup::create(
_t('HtmlEditorField.IMAGEDIMENSIONS', 'Dimensions'),
TextField::create(
'Width',
_t('HtmlEditorField.IMAGEWIDTHPX', 'Width'),
$file->InsertWidth
)->setMaxLength(5),
TextField::create(
'Height',
_t('HtmlEditorField.IMAGEHEIGHTPX', 'Height'),
$file->InsertHeight
)->setMaxLength(5)
)->addExtraClass('dimensions last')
);
}
$urlField->dontEscape = true;
if($file->Type == 'photo') {
$fields->insertBefore(new TextField(
'AltText',
_t('HtmlEditorField.IMAGEALTTEXT', 'Alternative text (alt) - shown if image can\'t be displayed'),
$file->Title,
80
), 'CaptionText');
$fields->insertBefore(new TextField(
'Title',
_t('HtmlEditorField.IMAGETITLE', 'Title text (tooltip) - for additional information about the image')
), 'CaptionText');
}
$this->extend('updateFieldsForOembed', $fields, $url, $file);
return $fields;
}
/**
* @return FieldList
*/
protected function getFieldsForFlash($url, $file) {
$fields = new FieldList(
FieldGroup::create(
_t('HtmlEditorField.IMAGEDIMENSIONS', 'Dimensions'),
TextField::create(
'Width',
_t('HtmlEditorField.IMAGEWIDTHPX', 'Width'),
$file->Width
)->setMaxLength(5),
TextField::create(
'Height',
" x " . _t('HtmlEditorField.IMAGEHEIGHTPX', 'Height'),
$file->Height
)->setMaxLength(5)
)->addExtraClass('dimensions')
);
$this->extend('updateFieldsForFlash', $fields, $url, $file);
return $fields;
}
/**
* @return FieldList
*/
protected function getFieldsForImage($url, $file) {
if($file->File instanceof Image) {
$formattedImage = $file->File->generateFormattedImage('SetWidth',
Config::inst()->get('Image', 'asset_preview_width'));
$thumbnailURL = $formattedImage ? $formattedImage->URL : $url;
} else {
$thumbnailURL = $url;
}
$fields = new FieldList(
CompositeField::create(
CompositeField::create(
LiteralField::create(
"ImageFull",
"%s ',
$file->Link(), $file->Link(), $file->RelativeLink())
),
new DateField_Disabled("Created", _t('AssetTableField.CREATED','First uploaded'),
$file->Created),
new DateField_Disabled("LastEdited", _t('AssetTableField.LASTEDIT','Last changed'),
$file->LastEdited)
)
)->setName("FilePreviewData")->addExtraClass('cms-file-info-data')
)->setName("FilePreview")->addExtraClass('cms-file-info'),
TextField::create(
'AltText',
_t('HtmlEditorField.IMAGEALT', 'Alternative text (alt)'),
$file->Title,
80
)->setDescription(
_t('HtmlEditorField.IMAGEALTTEXTDESC', 'Shown to screen readers or if image can\'t be displayed')),
TextField::create(
'Title',
_t('HtmlEditorField.IMAGETITLETEXT', 'Title text (tooltip)')
)->setDescription(
_t('HtmlEditorField.IMAGETITLETEXTDESC', 'For additional information about the image')),
new TextField('CaptionText', _t('HtmlEditorField.CAPTIONTEXT', 'Caption text')),
DropdownField::create(
'CSSClass',
_t('HtmlEditorField.CSSCLASS', 'Alignment / style'),
array(
'leftAlone' => _t('HtmlEditorField.CSSCLASSLEFTALONE', 'On the left, on its own.'),
'center' => _t('HtmlEditorField.CSSCLASSCENTER', 'Centered, on its own.'),
'left' => _t('HtmlEditorField.CSSCLASSLEFT', 'On the left, with text wrapping around.'),
'right' => _t('HtmlEditorField.CSSCLASSRIGHT', 'On the right, with text wrapping around.')
)
)->addExtraClass('last')
);
if($file->Width != null){
$fields->push(
FieldGroup::create(_t('HtmlEditorField.IMAGEDIMENSIONS', 'Dimensions'),
TextField::create(
'Width',
_t('HtmlEditorField.IMAGEWIDTHPX', 'Width'),
$file->InsertWidth
)->setMaxLength(5),
TextField::create(
'Height',
" x " . _t('HtmlEditorField.IMAGEHEIGHTPX', 'Height'),
$file->InsertHeight
)->setMaxLength(5)
)->addExtraClass('dimensions last')
);
}
$urlField->dontEscape = true;
$this->extend('updateFieldsForImage', $fields, $url, $file);
return $fields;
}
/**
* @param Int
* @return DataList
*/
protected function getFiles($parentID = null) {
// TODO Use array('Filename:EndsWith' => $exts) once that's supported
$exts = $this->getAllowedExtensions();
$wheres = array();
foreach($exts as $ext) $wheres[] = '"Filename" LIKE \'%.' . $ext . '\'';
$files = File::get()->where(implode(' OR ', $wheres));
// Limit by folder (if required)
if($parentID) {
$files = $files->filter('ParentID', $parentID);
}
return $files;
}
/**
* @return Array All extensions which can be handled by the different views.
*/
protected function getAllowedExtensions() {
$exts = array('jpg', 'gif', 'png', 'swf','jpeg');
$this->extend('updateAllowedExtensions', $exts);
return $exts;
}
}
/**
* Encapsulation of a file which can either be a remote URL
* or a {@link File} on the local filesystem, exhibiting common properties
* such as file name or the URL.
*
* @todo Remove once core has support for remote files
*/
class HtmlEditorField_File extends ViewableData {
/** @var String */
protected $url;
/** @var File */
protected $file;
/**
* @param String
* @param File
*/
public function __construct($url, $file = null) {
$this->url = $url;
$this->file = $file;
$this->failover = $file;
parent::__construct();
}
/**
* @return File Might not be set (for remote files)
*/
public function getFile() {
return $this->file;
}
public function getURL() {
return $this->url;
}
public function getName() {
return ($this->file) ? $this->file->Name : preg_replace('/\?.*/', '', basename($this->url));
}
/**
* @return String HTML
*/
public function getPreview() {
$preview = $this->extend('getPreview');
if($preview) return $preview;
if($this->file) {
return $this->file->CMSThumbnail();
} else {
// Hack to use the framework's built-in thumbnail support without creating a local file representation
$tmpFile = new File(array('Name' => $this->Name, 'Filename' => $this->Name));
return $tmpFile->CMSThumbnail();
}
}
public function getExtension() {
return strtolower(($this->file) ? $this->file->Extension : pathinfo($this->Name, PATHINFO_EXTENSION));
}
public function appCategory() {
if($this->file) {
return $this->file->appCategory();
} else {
// Hack to use the framework's built-in thumbnail support without creating a local file representation
$tmpFile = new File(array('Name' => $this->Name, 'Filename' => $this->Name));
return $tmpFile->appCategory();
}
}
}
class HtmlEditorField_Embed extends HtmlEditorField_File {
protected $oembed;
public function __construct($url, $file = null) {
parent::__construct($url, $file);
$this->oembed = Oembed::get_oembed_from_url($url);
if(!$this->oembed) {
$controller = Controller::curr();
$controller->response->addHeader('X-Status',
rawurlencode(_t(
'HtmlEditorField.URLNOTANOEMBEDRESOURCE',
"The URL '{url}' could not be turned into a media resource.",
"The given URL is not a valid Oembed resource; the embed element couldn't be created.",
array('url' => $url)
)));
$controller->response->setStatusCode(404);
throw new SS_HTTPResponse_Exception($controller->response);
}
}
public function getWidth() {
return $this->oembed->Width ?: 100;
}
public function getHeight() {
return $this->oembed->Height ?: 100;
}
/**
* Provide an initial width for inserted media, restricted based on $embed_width
*
* @return int
*/
public function getInsertWidth() {
$width = $this->getWidth();
$maxWidth = Config::inst()->get('HtmlEditorField', 'insert_width');
return ($width <= $maxWidth) ? $width : $maxWidth;
}
/**
* Provide an initial height for inserted media, scaled proportionally to the initial width
*
* @return int
*/
public function getInsertHeight() {
$width = $this->getWidth();
$height = $this->getHeight();
$maxWidth = Config::inst()->get('HtmlEditorField', 'insert_width');
return ($width <= $maxWidth) ? $height : round($height*($maxWidth/$width));
}
public function getPreview() {
if(isset($this->oembed->thumbnail_url)) {
return sprintf('