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<?php
/**
* A TinyMCE-powered WYSIWYG HTML editor field with image and link insertion and tracking capabilities. Editor fields
* are created from <textarea> tags, which are then converted with JavaScript.
*
* @package forms
* @subpackage fields-formattedinput
*/
class HtmlEditorField extends TextareaField {

/**
* @var Boolean Use TinyMCE's GZIP compressor
*/
static $use_gzip = true;

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(self::$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, $matches);
Requirements::javascript($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 = '') {
if(count(func_get_args()) > 3) Deprecation::notice('3.0', 'Use setRows() and setCols() instead of constructor arguments', Deprecation::SCOPE_GLOBAL);

parent::__construct($name, $title, $value);

self::include_js();
}

/**
* @return string
*/
function Field($properties = array()) {
// mark up broken links
$value = new SS_HTMLValue($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'));
}
}
}

return $this->createTag (
'textarea',
$this->getAttributes(),
htmlentities($value->getContent(), ENT_COMPAT, 'UTF-8')
);
}

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->escapeTypeForField($this->name) != 'xml') {
throw new Exception (
'HtmlEditorField->saveInto(): This field should save into a HTMLText or HTMLVarchar field.'
);
}

$linkedPages = array();
$linkedFiles = array();

$htmlValue = new SS_HTMLValue($this->value);

if(class_exists('SiteTree')) {
// Populate link tracking for internal links & links to asset files.
if($links = $htmlValue->getElementsByTagName('a')) foreach($links as $link) {
$href = Director::makeRelative($link->getAttribute('href'));

if($href) {
if(preg_match('/\[sitetree_link,id=([0-9]+)\]/i', $href, $matches)) {
$ID = $matches[1];

// clear out any broken link classes
if($class = $link->getAttribute('class')) {
$link->setAttribute('class', preg_replace('/(^ss-broken|ss-broken$| ss-broken )/', null, $class));
}

$linkedPages[] = $ID;
if(!DataObject::get_by_id('SiteTree', $ID)) $record->HasBrokenLink = true;

} else if(substr($href, 0, strlen(ASSETS_DIR) + 1) == ASSETS_DIR.'/') {
$candidateFile = File::find(Convert::raw2sql(urldecode($href)));
if($candidateFile) {
$linkedFiles[] = $candidateFile->ID;
} else {
$record->HasBrokenFile = true;
}
} else if($href == '' || $href[0] == '/') {
$record->HasBrokenLink = true;
}
}
}
}

// Resample images, add default attributes and add to assets tracking.
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', $img->getAttribute('src')));
if(!$image = File::find($path = urldecode(Director::makeRelative($img->getAttribute('src'))))) {
if(substr($path, 0, strlen(ASSETS_DIR) + 1) == ASSETS_DIR . '/') {
$record->HasBrokenFile = true;
}

continue;
}

// Resample the images if the width & height have changed.
$width = $img->getAttribute('width');
$height = $img->getAttribute('height');

if($image){
if($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', '');

//If the src attribute is not set, then we won't add this to the list:
if($img->getAttribute('src')){
// Add to the tracked files.
$linkedFiles[] = $image->ID;
}
}

// Save file & link tracking data.
if(class_exists('SiteTree')) {
if($record->ID && $record->many_many('LinkTracking') && $tracker = $record->LinkTracking()) {
$tracker->removeByFilter(sprintf('"FieldName" = \'%s\' AND "SiteTreeID" = %d', $this->name, $record->ID));

if($linkedPages) foreach($linkedPages as $item) {
$SQL_fieldName = Convert::raw2sql($this->name);
DB::query("INSERT INTO \"SiteTree_LinkTracking\" (\"SiteTreeID\",\"ChildID\", \"FieldName\")
VALUES ($record->ID, $item, '$SQL_fieldName')");
}
}

if($record->ID && $record->many_many('ImageTracking') && $tracker = $record->ImageTracking()) {
$tracker->where(sprintf('"FieldName" = \'%s\' AND "SiteTreeID" = %d', $this->name, $record->ID))->removeAll();

$fieldName = $this->name;
if($linkedFiles) foreach($linkedFiles as $item) {
$tracker->add($item, array('FieldName' => $this->name));
}
}
}

$record->{$this->name} = $htmlValue->getContent();
}

/**
* @return HtmlEditorField_Readonly
*/
public function performReadonlyTransformation() {
$field = new HtmlEditorField_Readonly($this->name, $this->title, $this->value);
$field->setForm($this->form);
$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 {
function Field($properties = array()) {
$valforInput = $this->value ? Convert::raw2att($this->value) : "";
return "<span class=\"readonly typography\" id=\"" . $this->id() . "\">" . ( $this->value && $this->value != '<p></p>' ? $this->value : '<i>(not set)</i>' ) . "</span><input type=\"hidden\" name=\"".$this->name."\" value=\"".$valforInput."\" />";
}
function Type() {
return 'htmleditorfield readonly';
}
}

/**
* Toolbar shared by all instances of {@link HTMLEditorField}, to avoid too much markup duplication.
* Needs to be inserted manually into the template in order to function - see {@link LeftAndMain->EditorToolbar()}.
*
* @package forms
* @subpackage fields-formattedinput
*/
class HtmlEditorField_Toolbar extends RequestHandler {

static $allowed_actions = array(
'LinkForm',
'MediaForm',
'viewfile'
);

/**
* @var string
*/
protected $templateViewFile = 'HtmlEditorField_viewfile';

protected $controller, $name;

function __construct($controller, $name) {
parent::__construct();

Requirements::javascript(FRAMEWORK_DIR . "/thirdparty/jquery/jquery.js");
Requirements::javascript(THIRDPARTY_DIR . '/jquery-ui/jquery-ui.js');
Requirements::javascript(THIRDPARTY_DIR . '/jquery-entwine/dist/jquery.entwine-dist.js');
Requirements::javascript(FRAMEWORK_ADMIN_DIR . '/javascript/ssui.core.js');
Requirements::javascript(FRAMEWORK_DIR ."/javascript/HtmlEditorField.js");

Requirements::css(THIRDPARTY_DIR . '/jquery-ui-themes/smoothness/jquery-ui.css');

$this->controller = $controller;
$this->name = $name;
}

public function forTemplate() {
return sprintf(
'<div id="cms-editor-dialogs" data-url-linkform="%s" data-url-mediaform="%s"></div>',
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
*/
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
*/
function LinkForm() {
$siteTree = new TreeDropdownField('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 = '<span class="step-label"><span class="flyout">%d</span><span class="arrow"></span><strong class="title">%s</strong></span>';
$form = new Form(
$this->controller,
"{$this->name}/LinkForm",
new FieldList(
$headerWrap = new CompositeField(
new LiteralField(
'Heading',
sprintf('<h3 class="htmleditorfield-mediaform-heading insert">%s</h3>', _t('HtmlEditorField.LINK', 'Insert Link'))
)
),
$contentComposite = new CompositeField(
new OptionsetField(
'LinkType',
sprintf($numericLabelTmpl, '1', _t('HtmlEditorField.LINKTO', 'Link to')),
array(
'internal' => _t('HtmlEditorField.LINKINTERNAL', 'Page on the site'),
'external' => _t('HtmlEditorField.LINKEXTERNAL', 'Another website'),
'anchor' => _t('HtmlEditorField.LINKANCHOR', 'Anchor on this page'),
'email' => _t('HtmlEditorField.LINKEMAIL', 'Email address'),
'file' => _t('HtmlEditorField.LINKFILE', 'Download a file'),
),
'internal'
),
new LiteralField('Step2',
'<div class="step2">' . sprintf($numericLabelTmpl, '2', _t('HtmlEditorField.DETAILS', 'Details')) . '</div>'
),
$siteTree,
new TextField('external', _t('HtmlEditorField.URL', 'URL'), 'http://'),
new EmailField('email', _t('HtmlEditorField.EMAIL', 'Email address')),
new TreeDropdownField('file', _t('HtmlEditorField.FILE', 'File'), 'File', 'ID', 'Title', true),
new TextField('Anchor', _t('HtmlEditorField.ANCHORVALUE', 'Anchor')),
new TextField('Description', _t('HtmlEditorField.LINKDESCR', 'Link description')),
new CheckboxField('TargetBlank', _t('HtmlEditorField.LINKOPENNEWWIN', 'Open link in a new window?')),
new HiddenField('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
*/
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),
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 = '<span class="step-label"><span class="flyout">%d</span><span class="arrow"></span><strong class="title">%s</strong></span>';

$fromCMS = new CompositeField(
new LiteralField('headerSelect', '<h4>' . sprintf($numericLabelTmpl, '1', _t('HtmlEditorField.FindInFolder', 'Find in Folder')) . '</h4>'),
$select = new TreeDropdownField('ParentID', "", 'Folder'),
$fileField
);

$fromCMS->addExtraClass('content ss-uploadfield from-CMS');
$select->addExtraClass('content-select');


$fromWeb = new CompositeField(
new LiteralField('headerURL', '<h4>' . sprintf($numericLabelTmpl, '1', _t('HtmlEditorField.ADDURL', 'Add URL')) . '</h4>'),
$remoteURL = new TextField('RemoteURL', 'http://'),
new LiteralField('addURLImage', '<button class="action ui-action-constructive ui-button field add-url" data-icon="addMedia"></button>')
);

$remoteURL->addExtraClass('remoteurl');
$fromWeb->addExtraClass('content ss-uploadfield from-web');

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');
$computerUploadField->setFolderName(Upload::$uploads_folder);

$tabSet = new TabSet(
"MediaFormInsertMediaTabs",
new Tab(
_t('HtmlEditorField.FROMCOMPUTER','From your computer'),
$computerUploadField
),
new Tab(
_t('HtmlEditorField.FROMWEB', 'From the web'),
$fromWeb
),
new Tab(
_t('HtmlEditorField.FROMCMS','From the CMS'),
$fromCMS
)
);

$allFields = new CompositeField(
$tabSet,
new LiteralField('headerEdit', '<h4 class="field header-edit">' . sprintf($numericLabelTmpl, '2', _t('HtmlEditorField.ADJUSTDETAILSDIMENSIONS', 'Details &amp; dimensions')) . '</h4>'),
$editComposite = new CompositeField(
new LiteralField('contentEdit', '<div class="content-edit ss-uploadfield-files files"></div>')
)
);

$allFields->addExtraClass('ss-insert-media');

$headings = new CompositeField(
new LiteralField(
'Heading',
sprintf('<h3 class="htmleditorfield-mediaform-heading insert">%s</h3>', _t('HtmlEditorField.INSERTMEDIA', 'Insert Media')).
sprintf('<h3 class="htmleditorfield-mediaform-heading update">%s</h3>', _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';
}

$previewField = new LiteralField("ImageFull",
"<img id='thumbnailImage' class='thumbnail-preview' src='{$thumbnailURL}?r=" . rand(1,100000) . "' alt='{$file->Name}' />\n"
);

if($file->Width != null){
$dimensionsField = new FieldGroup(_t('HtmlEditorField.IMAGEDIMENSIONS', 'Dimensions'),
$widthField = new TextField('Width', _t('HtmlEditorField.IMAGEWIDTHPX', 'Width'), $file->Width),
$heightField = new TextField('Height', _t('HtmlEditorField.IMAGEHEIGHTPX', 'Height'), $file->Height)
);
}


$fields = new FieldList(
$filePreview = CompositeField::create(
CompositeField::create(
$previewField
)->setName("FilePreviewImage")->addExtraClass('cms-file-info-preview'),
CompositeField::create(
CompositeField::create(
new ReadonlyField("FileType", _t('AssetTableField.TYPE','File type') . ':', $file->Type),
$urlField = new ReadonlyField('ClickableURL', _t('AssetTableField.URL','URL'),
sprintf('<a href="%s" target="_blank" class="file">%s</a>', $url, $url)
)
)
)->setName("FilePreviewData")->addExtraClass('cms-file-info-data')
)->setName("FilePreview")->addExtraClass('cms-file-info'),
new TextField('CaptionText', _t('HtmlEditorField.CAPTIONTEXT', 'Caption text')),
$alignment = new DropdownField(
'CSSClass',
_t('HtmlEditorField.CSSCLASS', 'Alignment / style'),
array(
'left' => _t('HtmlEditorField.CSSCLASSLEFT', 'On the left, with text wrapping around.'),
'leftAlone' => _t('HtmlEditorField.CSSCLASSLEFTALONE', 'On the left, on its own.'),
'right' => _t('HtmlEditorField.CSSCLASSRIGHT', 'On the right, with text wrapping around.'),
'center' => _t('HtmlEditorField.CSSCLASSCENTER', 'Centered, on its own.'),
)
),
$dimensionsField
);
$urlField->addExtraClass('text-wrap');
$urlField->dontEscape = true;
if($dimensionsField){
$dimensionsField->addExtraClass('dimensions last');
$widthField->setMaxLength(5);
$heightField->setMaxLength(5);
}else{
$alignment->addExtraClass('last');
}


if($file->Type == 'photo') {
$filePreview->FieldList()->insertBefore(new TextField(
'AltText',
_t('HtmlEditorField.IMAGEALTTEXT', 'Alternative text (alt) - shown if image cannot be displayed'),
$file->Title,
80
), 'CaptionText');
$filePreview->FieldList()->insertBefore(new TextField(
'Title',
_t('HtmlEditorField.IMAGETITLE', 'Title text (tooltip) - for additional information about the image')
), 'CaptionText');
}

$this->extend('updateFieldsForImage', $fields, $url, $file);

return $fields;
}

/**
* @return FieldList
*/
protected function getFieldsForFlash($url, $file) {
$fields = new FieldList(
$dimensionsField = new FieldGroup(_t('HtmlEditorField.IMAGEDIMENSIONS', 'Dimensions'),
$widthField = new TextField('Width', _t('HtmlEditorField.IMAGEWIDTHPX', 'Width'), $file->Width),
$heightField = new TextField('Height', " x " . _t('HtmlEditorField.IMAGEHEIGHTPX', 'Height'), $file->Height)
)
);
$dimensionsField->addExtraClass('dimensions');
$widthField->setMaxLength(5);
$heightField->setMaxLength(5);

$this->extend('updateFieldsForFlash', $fields, $url, $file);

return $fields;
}

/**
* @return FieldList
*/
protected function getFieldsForImage($url, $file) {
if($file->File instanceof Image) {
$formattedImage = $file->File->generateFormattedImage('SetWidth', Image::$asset_preview_width);
$thumbnailURL = $formattedImage ? $formattedImage->URL : $url;
} else {
$thumbnailURL = $url;
}

$previewField = new LiteralField("ImageFull",
"<img id='thumbnailImage' class='thumbnail-preview' src='{$thumbnailURL}?r=" . rand(1,100000) . "' alt='{$file->Name}' />\n"
);

if($file->Width != null){
$dimensionsField = new FieldGroup(_t('HtmlEditorField.IMAGEDIMENSIONS', 'Dimensions'),
$widthField = new TextField('Width', _t('HtmlEditorField.IMAGEWIDTHPX', 'Width'), $file->Width),
$heightField = new TextField('Height', " x " . _t('HtmlEditorField.IMAGEHEIGHTPX', 'Height'), $file->Height)
);
}

$fields = new FieldList(
$filePreview = CompositeField::create(
CompositeField::create(
$previewField
)->setName("FilePreviewImage")->addExtraClass('cms-file-info-preview'),
CompositeField::create(
CompositeField::create(
new ReadonlyField("FileType", _t('AssetTableField.TYPE','File type') . ':', $file->FileType),
new ReadonlyField("Size", _t('AssetTableField.SIZE','File size') . ':', $file->getSize()),
$urlField = new ReadonlyField('ClickableURL', _t('AssetTableField.URL','URL'),
sprintf('<a href="%s" target="_blank" class="file-url">%s</a>', $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 not 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')),
$alignment = new DropdownField(
'CSSClass',
_t('HtmlEditorField.CSSCLASS', 'Alignment / style'),
array(
'left' => _t('HtmlEditorField.CSSCLASSLEFT', 'On the left, with text wrapping around.'),
'leftAlone' => _t('HtmlEditorField.CSSCLASSLEFTALONE', 'On the left, on its own.'),
'right' => _t('HtmlEditorField.CSSCLASSRIGHT', 'On the right, with text wrapping around.'),
'center' => _t('HtmlEditorField.CSSCLASSCENTER', 'Centered, on its own.'),
)
),
$dimensionsField
);
$urlField->dontEscape = true;
if($dimensionsField){
$dimensionsField->addExtraClass('dimensions last');
$widthField->setMaxLength(5);
$heightField->setMaxLength(5);
}else{
$alignment->addExtraClass('last');
}


$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');
$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
*/
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)
*/
function getFile() {
return $this->file;
}

function getURL() {
return $this->url;
}

function getName() {
return ($this->file) ? $this->file->Name : preg_replace('/\?.*/', '', basename($this->url));
}

/**
* @return String HTML
*/
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();
}
}

function getExtension() {
return strtolower(($this->file) ? $this->file->Extension : pathinfo($this->Name, PATHINFO_EXTENSION));
}

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 URL that has been passed is not a valid Oembed resource, and the embed element could not 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;
}

public function getPreview() {
if(isset($this->oembed->thumbnail_url)) {
return sprintf('<img src="%s" />', $this->oembed->thumbnail_url);
}
}

public function getName() {
if(isset($this->oembed->title)) {
return $this->oembed->title;
} else {
return parent::getName();
}
}

public function getType() {
return $this->oembed->type;
}

public function getOembed() {
return $this->oembed;
}

public function appCategory() {
return 'embed';
}
}

class HtmlEditorField_Image extends HtmlEditorField_File {

protected $width;

protected $height;

function __construct($url, $file = null) {
parent::__construct($url, $file);

// Get dimensions for remote file
$info = @getimagesize($url);
if($info) {
$this->width = $info[0];
$this->height = $info[1];
}
}

function getWidth() {
return ($this->file) ? $this->file->Width : $this->width;
}

function getHeight() {
return ($this->file) ? $this->file->Height : $this->height;
}

function getPreview() {
return ($this->file) ? $this->file->CMSThumbnail() : sprintf('<img src="%s" />', $this->url);
}

}
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