PhabricatorDashboardTabsPanelType.php
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	<?php

	final class PhabricatorDashboardTabsPanelType
	extends PhabricatorDashboardPanelType {

	public function getPanelTypeKey() {
	return 'tabs';
	}

	public function getPanelTypeName() {
	return pht('Tab Panel');
	}

	public function getPanelTypeDescription() {
	return pht('Use tabs to switch between several other panels.');
	}

	public function getFieldSpecifications() {
	return array(
	'config' => array(
	'name' => pht('Tabs'),
	'type' => 'dashboard.tabs',
	),
	);
	}

	public function shouldRenderAsync() {
	// The actual tab panel itself is cheap to render.
	return false;
	}

	public function renderPanelContent(
	PhabricatorUser $viewer,
	PhabricatorDashboardPanel $panel,
	PhabricatorDashboardPanelRenderingEngine $engine) {

	$config = $panel->getProperty('config');
	if (!is_array($config)) {
	// NOTE: The older version of this panel stored raw JSON.
	$config = phutil_json_decode($config);
	}

	$list = id(new PHUIListView())
	->setType(PHUIListView::NAVBAR_LIST);

	$selected = 0;

	$node_ids = array();
	foreach ($config as $idx => $tab_spec) {
	$node_ids[$idx] = celerity_generate_unique_node_id();
	}

	foreach ($config as $idx => $tab_spec) {
	$list->addMenuItem(
	id(new PHUIListItemView())
	->setHref('#')
	->setSelected($idx == $selected)
	->addSigil('dashboard-tab-panel-tab')
	->setMetadata(array('idx' => $idx))
	->setName(idx($tab_spec, 'name', pht('Nameless Tab'))));
	}

	$ids = ipull($config, 'panelID');
	if ($ids) {
	$panels = id(new PhabricatorDashboardPanelQuery())
	->setViewer($viewer)
	->withIDs($ids)
	->execute();
	} else {
	$panels = array();
	}

	$parent_phids = $engine->getParentPanelPHIDs();
	$parent_phids[] = $panel->getPHID();

	// TODO: Currently, we'll load all the panels on page load. It would be
	// vaguely nice to load hidden panels only when the user selects them.

	// TODO: Maybe we should persist which panel the user selected, so it
	// remains selected across page loads.

	$content = array();
	$no_headers = PhabricatorDashboardPanelRenderingEngine::HEADER_MODE_NONE;
	foreach ($config as $idx => $tab_spec) {
	$panel_id = idx($tab_spec, 'panelID');
	$panel = idx($panels, $panel_id);

	if ($panel) {
	$panel_content = id(new PhabricatorDashboardPanelRenderingEngine())
	->setViewer($viewer)
	->setEnableAsyncRendering(true)
	->setParentPanelPHIDs($parent_phids)
	->setPanel($panel)
	->setPanelPHID($panel->getPHID())
	->setHeaderMode($no_headers)
	->renderPanel();
	} else {
	$panel_content = pht('(Invalid Panel)');
	}

	$content[] = phutil_tag(
	'div',
	array(
	'id' => $node_ids[$idx],
	'style' => ($idx == $selected) ? null : 'display: none',
	),
	$panel_content);
	}

	Javelin::initBehavior('dashboard-tab-panel');

	return javelin_tag(
	'div',
	array(
	'sigil' => 'dashboard-tab-panel-container',
	'meta' => array(
	'panels' => $node_ids,
	),
	),
	array(
	$list,
	$content,
	));
	}

	}

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