PhabricatorInlineCommentPreviewController.php
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	<?php

	abstract class PhabricatorInlineCommentPreviewController
	extends PhabricatorController {

	abstract protected function loadInlineComments();

	public function processRequest() {
	$request = $this->getRequest();
	$user = $request->getUser();

	$inlines = $this->loadInlineComments();
	assert_instances_of($inlines, 'PhabricatorInlineCommentInterface');

	$engine = new PhabricatorMarkupEngine();
	$engine->setViewer($user);
	foreach ($inlines as $inline) {
	$engine->addObject(
	$inline,
	PhabricatorInlineCommentInterface::MARKUP_FIELD_BODY);
	}
	$engine->process();

	$phids = array($user->getPHID());
	$handles = $this->loadViewerHandles($phids);

	$views = array();
	foreach ($inlines as $inline) {
	$view = new DifferentialInlineCommentView();
	$view->setInlineComment($inline);
	$view->setMarkupEngine($engine);
	$view->setHandles($handles);
	$view->setEditable(false);
	$view->setPreview(true);
	$views[] = $view->render();
	}
	$views = phutil_implode_html("\n", $views);

	return id(new AphrontAjaxResponse())
	->setContent($views);
	}
	}