PhabricatorApplicationTransactionView.php
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	<?php

	/**
	* @concrete-extensible
	*/
	class PhabricatorApplicationTransactionView extends AphrontView {

	private $transactions;
	private $engine;
	private $anchorOffset = 1;
	private $showEditActions = true;
	private $isPreview;

	public function setIsPreview($is_preview) {
	$this->isPreview = $is_preview;
	return $this;
	}

	public function setShowEditActions($show_edit_actions) {
	$this->showEditActions = $show_edit_actions;
	return $this;
	}

	public function getShowEditActions() {
	return $this->showEditActions;
	}

	public function setAnchorOffset($anchor_offset) {
	$this->anchorOffset = $anchor_offset;
	return $this;
	}

	public function setMarkupEngine(PhabricatorMarkupEngine $engine) {
	$this->engine = $engine;
	return $this;
	}

	public function setTransactions(array $transactions) {
	assert_instances_of($transactions, 'PhabricatorApplicationTransaction');
	$this->transactions = $transactions;
	return $this;
	}

	public function buildEvents() {
	$field = PhabricatorApplicationTransactionComment::MARKUP_FIELD_COMMENT;
	$engine = $this->getOrBuildEngine();

	$user = $this->getUser();

	$anchor = $this->anchorOffset;
	$events = array();
	foreach ($this->transactions as $xaction) {
	if ($xaction->shouldHide()) {
	continue;
	}

	$event = id(new PhabricatorTimelineEventView())
	->setUser($user)
	->setTransactionPHID($xaction->getPHID())
	->setUserHandle($xaction->getHandle($xaction->getAuthorPHID()))
	->setIcon($xaction->getIcon())
	->setColor($xaction->getColor());

	$title = $xaction->getTitle();
	if ($xaction->hasChangeDetails()) {
	$title = array(
	$title,
	' ',
	$this->buildChangeDetails($xaction),
	);
	}
	$event->setTitle($title);

	if ($this->isPreview) {
	$event->setIsPreview(true);
	} else {
	$event
	->setDateCreated($xaction->getDateCreated())
	->setContentSource($xaction->getContentSource())
	->setAnchor($anchor);

	$anchor++;
	}

	$has_deleted_comment = $xaction->getComment() &&
	$xaction->getComment()->getIsDeleted();

	if ($this->getShowEditActions() && !$this->isPreview) {
	if ($xaction->getCommentVersion() > 1) {
	$event->setIsEdited(true);
	}

	$can_edit = PhabricatorPolicyCapability::CAN_EDIT;

	if ($xaction->hasComment() \|\| $has_deleted_comment) {
	$has_edit_capability = PhabricatorPolicyFilter::hasCapability(
	$user,
	$xaction,
	$can_edit);
	if ($has_edit_capability) {
	$event->setIsEditable(true);
	}
	}
	}

	if ($xaction->hasComment()) {
	$event->appendChild(
	$engine->getOutput($xaction->getComment(), $field));
	} else if ($has_deleted_comment) {
	$event->appendChild(phutil_tag('em', array(), pht(
	'This comment has been deleted.')));
	}

	$events[] = $event;
	}

	return $events;
	}

	public function render() {
	$view = new PhabricatorTimelineView();
	$events = $this->buildEvents();
	foreach ($events as $event) {
	$view->addEvent($event);
	}

	if ($this->getShowEditActions()) {
	$list_id = celerity_generate_unique_node_id();

	$view->setID($list_id);

	Javelin::initBehavior(
	'phabricator-transaction-list',
	array(
	'listID' => $list_id,
	'nextAnchor' => $this->anchorOffset + count($events),
	));
	}

	return $view->render();
	}


	private function getOrBuildEngine() {
	if ($this->engine) {
	return $this->engine;
	}

	$field = PhabricatorApplicationTransactionComment::MARKUP_FIELD_COMMENT;

	$engine = id(new PhabricatorMarkupEngine())
	->setViewer($this->getUser());
	foreach ($this->transactions as $xaction) {
	if (!$xaction->hasComment()) {
	continue;
	}
	$engine->addObject($xaction->getComment(), $field);
	}
	$engine->process();

	return $engine;
	}

	private function buildChangeDetails(
	PhabricatorApplicationTransaction $xaction) {

	Javelin::initBehavior('phabricator-reveal-content');

	$show_id = celerity_generate_unique_node_id();
	$hide_id = celerity_generate_unique_node_id();
	$content_id = celerity_generate_unique_node_id();

	$show_more = javelin_tag(
	'a',
	array(
	'href' => '#',
	'sigil' => 'reveal-content',
	'mustcapture' => true,
	'id' => $show_id,
	'meta' => array(
	'hideIDs' => array($show_id),
	'showIDs' => array($hide_id, $content_id),
	),
	),
	pht('(Show Details)'));

	$hide_more = javelin_tag(
	'a',
	array(
	'href' => '#',
	'sigil' => 'reveal-content',
	'mustcapture' => true,
	'id' => $hide_id,
	'style' => 'display: none',
	'meta' => array(
	'hideIDs' => array($hide_id, $content_id),
	'showIDs' => array($show_id),
	),
	),
	pht('(Hide Details)'));

	$content = phutil_tag(
	'div',
	array(
	'id' => $content_id,
	'style' => 'display: none',
	'class' => 'phabricator-timeline-change-details',
	),
	$xaction->renderChangeDetails($this->getUser()));

	return array(
	$show_more,
	$hide_more,
	$content,
	);
	}


	}

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