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<?php
/**
* @package cms
* @subpackage controllers
*/
class CMSPageHistoryController extends CMSMain {
static $url_segment = 'pages/history';
static $url_rule = '/$Action/$ID/$VersionID/$OtherVersionID';
static $url_priority = 42;
static $menu_title = 'History';
static $required_permission_codes = 'CMS_ACCESS_CMSMain';
static $session_namespace = 'CMSMain';
static $allowed_actions = array(
'VersionsForm',
'compare'
);
public static $url_handlers = array(
'$Action/$ID/$VersionID/$OtherVersionID' => 'handleAction'
);
public function getResponseNegotiator() {
$negotiator = parent::getResponseNegotiator();
$controller = $this;
$negotiator->setCallback('CurrentForm', function() use(&$controller) {
$form = $controller->ShowVersionForm($controller->getRequest()->param('VersionID'));
if($form) return $form->forTemplate();
else return $controller->renderWith($controller->getTemplatesWithSuffix('_Content'));
});
$negotiator->setCallback('default', function() use(&$controller) {
return $controller->renderWith($controller->getViewer('show'));
});
return $negotiator;
}
/**
* @return array
*/
function show($request) {
$form = $this->ShowVersionForm($request->param('VersionID'));
$negotiator = $this->getResponseNegotiator();
$controller = $this;
$negotiator->setCallback('CurrentForm', function() use(&$controller, &$form) {
return $form ? $form->forTemplate() : $controller->renderWith($controller->getTemplatesWithSuffix('_Content'));
});
$negotiator->setCallback('default', function() use(&$controller, &$form) {
return $controller->customise(array('EditForm' => $form))->renderWith($controller->getViewer('show'));
});
return $negotiator->respond($request);
}
/**
* @return array
*/
function compare($request) {
$form = $this->CompareVersionsForm(
$request->param('VersionID'),
$request->param('OtherVersionID')
);
$negotiator = $this->getResponseNegotiator();
$controller = $this;
$negotiator->setCallback('CurrentForm', function() use(&$controller, &$form) {
return $form ? $form->forTemplate() : $controller->renderWith($controller->getTemplatesWithSuffix('_Content'));
});
$negotiator->setCallback('default', function() use(&$controller, &$form) {
return $controller->customise(array('EditForm' => $form))->renderWith($controller->getViewer('show'));
});
return $negotiator->respond($request);
}
/**
* Returns the read only version of the edit form. Detaches all {@link FormAction}
* instances attached since only action relates to revert.
*
* Permission checking is done at the {@link CMSMain::getEditForm()} level.
*
* @param int $id ID of the record to show
* @param array $fields optional
* @param int $versionID
* @param int $compare Compare mode
*
* @return Form
*/
function getEditForm($id = null, $fields = null, $versionID = null, $compareID = null) {
if(!$id) $id = $this->currentPageID();
$record = $this->getRecord($id, $versionID);
$versionID = ($record) ? $record->Version : $versionID;
$form = parent::getEditForm($record, ($record) ? $record->getCMSFields() : null);
// Respect permission failures from parent implementation
if(!($form instanceof Form)) return $form;
$nav = new SilverStripeNavigatorItem_ArchiveLink($record);
$form->setActions(new FieldList(
$revert = FormAction::create('doRollback', _t('CMSPageHistoryController.REVERTTOTHISVERSION', 'Revert to this version'))->setUseButtonTag(true),
$navField = new LiteralField('ArchivedLink', $nav->getHTML())
));
$fields = $form->Fields();
$fields->removeByName("Status");
$fields->push(new HiddenField("ID"));
$fields->push(new HiddenField("Version"));
$fields = $fields->makeReadonly();
$navField->setAllowHTML(true);
foreach($fields->dataFields() as $field) {
$field->dontEscape = true;
$field->reserveNL = true;
}
if($compareID) {
$link = Controller::join_links(
$this->Link('show'),
$id
);
$view = _t('CMSPageHistoryController.VIEW',"view");
$message = _t(
'CMSPageHistoryController.COMPARINGVERSION',
"Comparing versions {version1} and {version2}.",
array(
'version1' => sprintf('%s (<a href="%s">%s</a>)', $versionID, Controller::join_links($link, $versionID), $view),
'version2' => sprintf('%s (<a href="%s">%s</a>)', $compareID, Controller::join_links($link, $compareID), $view)
)
);
$revert->setReadonly(true);
}
else {
$message = _t(
'CMSPageHistoryController.VIEWINGVERSION',
"Currently viewing version {version}.",
array('version' => $versionID)
);
}
$fields->addFieldToTab('Root.Main',
new LiteralField('CurrentlyViewingMessage', $this->customise(array(
'Content' => $message,
'Classes' => 'notice'
))->renderWith(array('CMSMain_notice'))),
"Title"
);
$form->setFields($fields->makeReadonly());
$form->loadDataFrom(array(
"ID" => $id,
"Version" => $versionID,
));
if(($record && $record->isLatestVersion())) {
$revert->setReadonly(true);
}
$form->removeExtraClass('cms-content');
return $form;
}
/**
* Version select form. Main interface between selecting versions to view
* and comparing multiple versions.
*
* Because we can reload the page directly to a compare view (history/compare/1/2/3)
* this form has to adapt to those parameters as well.
*
* @return Form
*/
function VersionsForm() {
$id = $this->currentPageID();
$page = $this->getRecord($id);
$versionsHtml = '';
$action = $this->request->param('Action');
$versionID = $this->request->param('VersionID');
$otherVersionID = $this->request->param('OtherVersionID');
$showUnpublishedChecked = 0;
$compareModeChecked = ($action == "compare");
if($page) {
$versions = $page->allVersions();
$versionID = (!$versionID) ? $page->Version : $versionID;
if($versions) {
foreach($versions as $k => $version) {
$active = false;
if($version->Version == $versionID || $version->Version == $otherVersionID) {
$active = true;
if(!$version->WasPublished) $showUnpublishedChecked = 1;
}
$version->Active = ($active);
}
}
$vd = new ViewableData();
$versionsHtml = $vd->customise(array(
'Versions' => $versions
))->renderWith('CMSPageHistoryController_versions');
}
$fields = new FieldList(
new CheckboxField(
'ShowUnpublished',
_t('CMSPageHistoryController.SHOWUNPUBLISHED','Show unpublished versions'),
$showUnpublishedChecked
),
new CheckboxField(
'CompareMode',
_t('CMSPageHistoryController.COMPAREMODE', 'Compare mode (select two)'),
$compareModeChecked
),
new LiteralField('VersionsHtml', $versionsHtml),
$hiddenID = new HiddenField('ID', false, "")
);
$actions = new FieldList(
new FormAction(
'doCompare', _t('CMSPageHistoryController.COMPAREVERSIONS','Compare Versions')
),
new FormAction(
'doShowVersion', _t('CMSPageHistoryController.SHOWVERSION','Show Version')
)
);
// Use <button> to allow full jQuery UI styling
foreach($actions->dataFields() as $action) $action->setUseButtonTag(true);
$form = new Form(
$this,
'VersionsForm',
$fields,
$actions
);
$form->loadDataFrom($this->request->requestVars());
$hiddenID->setValue($id);
$form->unsetValidator();
$form
->addExtraClass('cms-versions-form') // placeholder, necessary for $.metadata() to work
->setAttribute('data-link-tmpl-compare', Controller::join_links($this->Link('compare'), '%s', '%s', '%s'))
->setAttribute('data-link-tmpl-show', Controller::join_links($this->Link('show'), '%s', '%s'));
return $form;
}
/**
* Process the {@link VersionsForm} compare function between two pages.
*
* @param array
* @param Form
*
* @return html
*/
function doCompare($data, $form) {
$versions = $data['Versions'];
if(count($versions) < 2) return null;
$id = $this->currentPageID();
$version1 = array_shift($versions);
$version2 = array_shift($versions);
$form = $this->CompareVersionsForm($version1, $version2);
// javascript solution, render into template
if($this->request->isAjax()) {
return $this->customise(array(
"EditForm" => $form
))->renderWith(array(
$this->class . '_EditForm',
'LeftAndMain_Content'
));
}
// non javascript, redirect the user to the page
$this->redirect(Controller::join_links(
$this->Link('compare'),
$version1,
$version2
));
}
/**
* Process the {@link VersionsForm} show version function. Only requires
* one page to be selected.
*
* @param array
* @param Form
*
* @return html
*/
function doShowVersion($data, $form) {
$versionID = null;
if(isset($data['Versions']) && is_array($data['Versions'])) {
$versionID = array_shift($data['Versions']);
}
if(!$versionID) return;
if($request->isAjax()) {
return $this->customise(array(
"EditForm" => $this->ShowVersionForm($versionID)
))->renderWith(array(
$this->class . '_EditForm',
'LeftAndMain_Content'
));
}
// non javascript, redirect the user to the page
$this->redirect(Controller::join_links(
$this->Link('version'),
$versionID
));
}
/**
* @return Form
*/
function ShowVersionForm($versionID = null) {
if(!$versionID) return null;
$id = $this->currentPageID();
$form = $this->getEditForm($id, null, $versionID);
return $form;
}
/**
* @return Form
*/
function CompareVersionsForm($versionID, $otherVersionID) {
if($versionID > $otherVersionID) {
$toVersion = $versionID;
$fromVersion = $otherVersionID;
} else {
$toVersion = $otherVersionID;
$fromVersion = $versionID;
}
if(!$toVersion || !$toVersion) return false;
$id = $this->currentPageID();
$page = DataObject::get_by_id("SiteTree", $id);
if($page && !$page->canView()) {
return Security::permissionFailure($this);
}
$record = $page->compareVersions($fromVersion, $toVersion);
$fromVersionRecord = Versioned::get_version('SiteTree', $id, $fromVersion);
$toVersionRecord = Versioned::get_version('SiteTree', $id, $toVersion);
if(!$fromVersionRecord) {
user_error("Can't find version $fromVersion of page $id", E_USER_ERROR);
}
if(!$toVersionRecord) {
user_error("Can't find version $toVersion of page $id", E_USER_ERROR);
}
if($record) {
$form = $this->getEditForm($id, null, null, true);
$form->setActions(new FieldList());
$form->addExtraClass('compare');
// Comparison views shouldn't be editable.
// Its important to convert fields *before* loading data,
// as the comparison output is HTML and not valid values for the various field types
$readonlyFields = $form->Fields()->makeReadonly();
$form->setFields($readonlyFields);
$form->loadDataFrom($record);
$form->loadDataFrom(array(
"ID" => $id,
"Version" => $fromVersion,
));
foreach($form->Fields()->dataFields() as $field) {
$field->dontEscape = true;
}
return $form;
}
}
}
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