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PhrictionDocumentController.php
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Mon, Dec 23, 09:49

PhrictionDocumentController.php
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<?php
/*
* Copyright 2011 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @group phriction
*/
class PhrictionDocumentController
extends PhrictionController {
private $slug;
public function willProcessRequest(array $data) {
$this->slug = $data['slug'];
}
public function processRequest() {
$request = $this->getRequest();
$user = $request->getUser();
$slug = PhrictionDocument::normalizeSlug($this->slug);
if ($slug != $this->slug) {
$uri = PhrictionDocument::getSlugURI($slug);
// Canonicalize pages to their one true URI.
return id(new AphrontRedirectResponse())->setURI($uri);
}
require_celerity_resource('phriction-document-css');
$document = id(new PhrictionDocument())->loadOneWhere(
'slug = %s',
$slug);
$breadcrumbs = $this->renderBreadcrumbs($slug);
$version_note = null;
if (!$document) {
$create_uri = '/phriction/edit/?slug='.$slug;
$page_content =
'<div class="phriction-content">'.
'<em>No content here!</em><br />'.
'No document found at <tt>'.phutil_escape_html($slug).'</tt>. '.
'You can <strong>'.
phutil_render_tag(
'a',
array(
'href' => $create_uri,
),
'create a new document').'</strong>.'.
'</div>';
$page_title = 'Page Not Found';
$button = phutil_render_tag(
'a',
array(
'href' => $create_uri,
'class' => 'green button',
),
'Create Page');
$buttons = $button;
} else {
$version = $request->getInt('v');
if ($version) {
$content = id(new PhrictionContent())->loadOneWhere(
'documentID = %d AND version = %d',
$document->getID(),
$version);
if (!$content) {
return new Aphront404Response();
}
if ($content->getID() != $document->getContentID()) {
$version_note = new AphrontErrorView();
$version_note->setSeverity(AphrontErrorView::SEVERITY_NOTICE);
$version_note->setTitle('Older Version');
$version_note->appendChild(
'You are viewing an older version of this document, as it '.
'appeared on '.
phabricator_datetime($content->getDateCreated(), $user).'.');
}
} else {
$content = id(new PhrictionContent())->load($document->getContentID());
}
$page_title = $content->getTitle();
$phids = array($content->getAuthorPHID());
$handles = id(new PhabricatorObjectHandleData($phids))->loadHandles();
$age = time() - $content->getDateCreated();
$age = floor($age / (60 * 60 * 24));
if ($age < 1) {
$when = 'today';
} else if ($age == 1) {
$when = 'yesterday';
} else {
$when = "{$age} days ago";
}
$byline =
'<div class="phriction-byline">'.
"Last updated {$when} by ".
$handles[$content->getAuthorPHID()]->renderLink().'.'.
'</div>';
$engine = PhabricatorMarkupEngine::newPhrictionMarkupEngine();
$doc_status = $document->getStatus();
if ($doc_status == PhrictionDocumentStatus::STATUS_EXISTS) {
$core_content =
'<div class="phabricator-remarkup">'.
$engine->markupText($content->getContent()).
'</div>';
} else if ($doc_status == PhrictionDocumentStatus::STATUS_DELETED) {
$notice = new AphrontErrorView();
$notice->setSeverity(AphrontErrorView::SEVERITY_NOTICE);
$notice->setTitle('Document Deleted');
$notice->appendChild(
'This document has been deleted. You can edit it to put new content '.
'here, or use history to revert to an earlier version.');
$core_content = $notice->render();
} else {
throw new Exception("Unknown document status '{$doc_status}'!");
}
$page_content =
'<div class="phriction-content">'.
$byline.
$core_content.
'</div>';
$edit_button = phutil_render_tag(
'a',
array(
'href' => '/phriction/edit/'.$document->getID().'/',
'class' => 'button',
),
'Edit Document');
$history_button = phutil_render_tag(
'a',
array(
'href' => PhrictionDocument::getSlugURI($slug, 'history'),
'class' => 'button grey',
),
'View History');
// these float right so history_button which is right most goes first
$buttons = $history_button.$edit_button;
}
if ($version_note) {
$version_note = $version_note->render();
}
$children = $this->renderChildren($slug);
$page =
'<div class="phriction-header">'.
$buttons.
'<h1>'.phutil_escape_html($page_title).'</h1>'.
$breadcrumbs.
'</div>'.
$version_note.
$page_content.
$children;
return $this->buildStandardPageResponse(
$page,
array(
'title' => 'Phriction - '.$page_title,
));
}
private function renderBreadcrumbs($slug) {
$ancestor_handles = array();
$ancestral_slugs = PhrictionDocument::getSlugAncestry($slug);
$ancestral_slugs[] = $slug;
if ($ancestral_slugs) {
$empty_slugs = array_fill_keys($ancestral_slugs, null);
$ancestors = id(new PhrictionDocument())->loadAllWhere(
'slug IN (%Ls)',
$ancestral_slugs);
$ancestors = mpull($ancestors, null, 'getSlug');
$ancestor_phids = mpull($ancestors, 'getPHID');
$handles = array();
if ($ancestor_phids) {
$handles = id(new PhabricatorObjectHandleData($ancestor_phids))
->loadHandles();
}
$ancestor_handles = array();
foreach ($ancestral_slugs as $slug) {
if (isset($ancestors[$slug])) {
$ancestor_handles[] = $handles[$ancestors[$slug]->getPHID()];
} else {
$handle = new PhabricatorObjectHandle();
$handle->setName(PhrictionDocument::getDefaultSlugTitle($slug));
$handle->setURI(PhrictionDocument::getSlugURI($slug));
$ancestor_handles[] = $handle;
}
}
}
$breadcrumbs = array();
foreach ($ancestor_handles as $ancestor_handle) {
$breadcrumbs[] = $ancestor_handle->renderLink();
}
$list = phutil_render_tag(
'a',
array(
'href' => '/phriction/',
),
'Document Index');
return
'<div class="phriction-breadcrumbs">'.
$list.' &middot; '.
'<span class="phriction-document-crumbs">'.
implode(" \xC2\xBB ", $breadcrumbs).
'</span>'.
'</div>';
}
private function renderChildren($slug) {
$document_dao = new PhrictionDocument();
$content_dao = new PhrictionContent();
$conn = $document_dao->establishConnection('r');
$limit = 50;
$d_child = PhrictionDocument::getSlugDepth($slug) + 1;
$d_grandchild = PhrictionDocument::getSlugDepth($slug) + 2;
// Select children and grandchildren.
$children = queryfx_all(
$conn,
'SELECT d.slug, d.depth, c.title FROM %T d JOIN %T c
ON d.contentID = c.id
WHERE d.slug LIKE %> AND d.depth IN (%d, %d)
AND d.status = %d
ORDER BY d.depth, c.title LIMIT %d',
$document_dao->getTableName(),
$content_dao->getTableName(),
($slug == '/' ? '' : $slug),
$d_child,
$d_grandchild,
PhrictionDocumentStatus::STATUS_EXISTS,
$limit);
if (!$children) {
return;
}
// We're going to render in one of three modes to try to accommodate
// different information scales:
//
// - If we found fewer than $limit rows, we know we have all the children
// and grandchildren and there aren't all that many. We can just render
// everything.
// - If we found $limit rows but the results included some grandchildren,
// we just throw them out and render only the children, as we know we
// have them all.
// - If we found $limit rows and the results have no grandchildren, we
// have a ton of children. Render them and then let the user know that
// this is not an exhaustive list.
if (count($children) == $limit) {
$more_children = true;
foreach ($children as $child) {
if ($child['depth'] == $d_grandchild) {
$more_children = false;
}
}
$show_grandchildren = false;
} else {
$show_grandchildren = true;
$more_children = false;
}
$grandchildren = array();
foreach ($children as $key => $child) {
if ($child['depth'] == $d_child) {
continue;
} else {
unset($children[$key]);
if ($show_grandchildren) {
$ancestors = PhrictionDocument::getSlugAncestry($child['slug']);
$grandchildren[end($ancestors)][] = $child;
}
}
}
// Fill in any missing children.
$known_slugs = ipull($children, null, 'slug');
foreach ($grandchildren as $slug => $ignored) {
if (empty($known_slugs[$slug])) {
$children[] = array(
'slug' => $slug,
'depth' => $d_child,
'title' => PhrictionDocument::getDefaultSlugTitle($slug),
'empty' => true,
);
}
}
$list = array();
$list[] = '<ul>';
foreach ($children as $child) {
$list[] = $this->renderChildDocumentLink($child);
$grand = idx($grandchildren, $child['slug'], array());
if ($grand) {
$list[] = '<ul>';
foreach ($grand as $grandchild) {
$list[] = $this->renderChildDocumentLink($grandchild);
}
$list[] = '</ul>';
}
}
if ($more_children) {
$list[] = '<li>More...</li>';
}
$list[] = '</ul>';
$list = implode("\n", $list);
return
'<div class="phriction-children">'.
'<div class="phriction-children-header">Document Hierarchy</div>'.
$list.
'</div>';
}
private function renderChildDocumentLink(array $info) {
$title = nonempty($info['title'], '(Untitled Document)');
$item = phutil_render_tag(
'a',
array(
'href' => PhrictionDocument::getSlugURI($info['slug']),
),
phutil_escape_html($title));
if (isset($info['empty'])) {
$item = '<em>'.$item.'</em>';
}
return '<li>'.$item.'</li>';
}
}

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