1e37f374b3
Many of the microapps are pretty javascript dependant, but at least we should allow users to get to the new notice field without allowing javascript to run in the browser. :)
569 lines
18 KiB
PHP
569 lines
18 KiB
PHP
<?php
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/**
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2011, StatusNet, Inc.
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*
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* Superclass for microapp plugin
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*
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* PHP version 5
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category Microapp
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @copyright 2011 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
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* @link http://status.net/
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*/
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if (!defined('STATUSNET')) {
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// This check helps protect against security problems;
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// your code file can't be executed directly from the web.
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exit(1);
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}
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/**
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* Superclass for microapp plugins
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*
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* This class lets you define micro-applications with different kinds of activities.
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*
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* The applications work more-or-less like other
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*
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* @category Microapp
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @copyright 2011 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
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* @link http://status.net/
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*/
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abstract class MicroAppPlugin extends Plugin
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{
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/**
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* Returns a localized string which represents this micro-app,
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* to be shown to users selecting what type of post to make.
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* This is paired with the key string in $this->tag().
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*
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* All micro-app classes must override this method.
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*
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* @return string
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*/
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abstract function appTitle();
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/**
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* Returns a key string which represents this micro-app in HTML
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* ids etc, as when offering selection of what type of post to make.
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* This is paired with the user-visible localizable $this->appTitle().
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*
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* All micro-app classes must override this method.
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*/
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abstract function tag();
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/**
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* Return a list of ActivityStreams object type URIs
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* which this micro-app handles. Default implementations
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* of the base class will use this list to check if a
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* given ActivityStreams object belongs to us, via
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* $this->isMyNotice() or $this->isMyActivity.
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*
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* All micro-app classes must override this method.
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*
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* @fixme can we confirm that these types are the same
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* for Atom and JSON streams? Any limitations or issues?
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*
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* @return array of strings
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*/
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abstract function types();
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/**
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* Given a parsed ActivityStreams activity, your plugin
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* gets to figure out how to actually save it into a notice
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* and any additional data structures you require.
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*
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* This will handle things received via AtomPub, OStatus
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* (PuSH and Salmon transports), or ActivityStreams-based
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* backup/restore of account data.
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*
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* You should be able to accept as input the output from your
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* $this->activityObjectFromNotice(). Where applicable, try to
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* use existing ActivityStreams structures and object types,
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* and be liberal in accepting input from what might be other
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* compatible apps.
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*
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* All micro-app classes must override this method.
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*
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* @fixme are there any standard options?
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*
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* @param Activity $activity
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* @param Profile $actor
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* @param array $options=array()
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*
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* @return Notice the resulting notice
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*/
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abstract function saveNoticeFromActivity($activity, $actor, $options=array());
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/**
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* Given an existing Notice object, your plugin gets to
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* figure out how to arrange it into an ActivityStreams
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* object.
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*
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* This will be how your specialized notice gets output in
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* Atom feeds and JSON-based ActivityStreams output, including
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* account backup/restore and OStatus (PuSH and Salmon transports).
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*
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* You should be able to round-trip data from this format back
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* through $this->saveNoticeFromActivity(). Where applicable, try
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* to use existing ActivityStreams structures and object types,
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* and consider interop with other compatible apps.
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*
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* All micro-app classes must override this method.
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*
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* @fixme this outputs an ActivityObject, not an Activity. Any compat issues?
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*
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* @param Notice $notice
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*
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* @return ActivityObject
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*/
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abstract function activityObjectFromNotice($notice);
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/**
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* When building the primary notice form, we'll fetch also some
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* alternate forms for specialized types -- that's you!
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*
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* Return a custom Widget or Form object for the given output
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* object, and it'll be included in the HTML output. Beware that
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* your form may be initially hidden.
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*
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* All micro-app classes must override this method.
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*
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* @param HTMLOutputter $out
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* @return Widget
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*/
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abstract function entryForm($out);
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/**
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* When a notice is deleted, you'll be called here for a chance
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* to clean up any related resources.
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*
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* All micro-app classes must override this method.
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*
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* @param Notice $notice
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*/
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abstract function deleteRelated($notice);
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/**
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*
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*/
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public function newFormAction() {
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// such as 'newbookmark' or 'newevent' route
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return 'new'.$this->tag();
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}
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/**
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* Check if a given notice object should be handled by this micro-app
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* plugin.
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*
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* The default implementation checks against the activity type list
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* returned by $this->types(). You can override this method to expand
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* your checks.
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*
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* @param Notice $notice
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* @return boolean
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*/
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function isMyNotice($notice) {
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$types = $this->types();
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return ($notice->verb == ActivityVerb::POST) && in_array($notice->object_type, $types);
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}
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/**
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* Check if a given ActivityStreams activity should be handled by this
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* micro-app plugin.
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*
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* The default implementation checks against the activity type list
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* returned by $this->types(), and requires that exactly one matching
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* object be present. You can override this method to expand
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* your checks or to compare the activity's verb, etc.
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*
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* @param Activity $activity
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* @return boolean
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*/
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function isMyActivity($activity) {
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$types = $this->types();
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return (count($activity->objects) == 1 &&
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($activity->objects[0] instanceof ActivityObject) &&
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($activity->verb == ActivityVerb::POST) &&
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in_array($activity->objects[0]->type, $types));
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}
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/**
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* Called when generating Atom XML ActivityStreams output from an
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* ActivityObject belonging to this plugin. Gives the plugin
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* a chance to add custom output.
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*
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* Note that you can only add output of additional XML elements,
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* not change existing stuff here.
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*
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* If output is already handled by the base Activity classes,
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* you can leave this base implementation as a no-op.
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*
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* @param ActivityObject $obj
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* @param XMLOutputter $out to add elements at end of object
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*/
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function activityObjectOutputAtom(ActivityObject $obj, XMLOutputter $out)
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{
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// default is a no-op
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}
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/**
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* Called when generating JSON ActivityStreams output from an
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* ActivityObject belonging to this plugin. Gives the plugin
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* a chance to add custom output.
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*
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* Modify the array contents to your heart's content, and it'll
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* all get serialized out as JSON.
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*
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* If output is already handled by the base Activity classes,
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* you can leave this base implementation as a no-op.
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*
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* @param ActivityObject $obj
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* @param array &$out JSON-targeted array which can be modified
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*/
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public function activityObjectOutputJson(ActivityObject $obj, array &$out)
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{
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// default is a no-op
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}
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/**
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* When a notice is deleted, delete the related objects
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* by calling the overridable $this->deleteRelated().
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*
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* @param Notice $notice Notice being deleted
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*
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* @return boolean hook value
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*/
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function onNoticeDeleteRelated($notice)
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{
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if ($this->isMyNotice($notice)) {
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$this->deleteRelated($notice);
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}
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return true;
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}
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/**
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* Output the HTML for this kind of object in a list
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*
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* @param NoticeListItem $nli The list item being shown.
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*
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* @return boolean hook value
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*
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* @fixme WARNING WARNING WARNING this closes a 'div' that is implicitly opened in BookmarkPlugin's showNotice implementation
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*/
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function onStartShowNoticeItem($nli)
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{
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if (!$this->isMyNotice($nli->notice)) {
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return true;
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}
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$adapter = $this->adaptNoticeListItem($nli);
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if (!empty($adapter)) {
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$adapter->showNotice();
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$adapter->showNoticeAttachments();
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$adapter->showNoticeInfo();
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$adapter->showNoticeOptions();
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} else {
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$this->oldShowNotice($nli);
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}
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return false;
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}
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/**
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* Given a notice list item, returns an adapter specific
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* to this plugin.
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*
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* @param NoticeListItem $nli item to adapt
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*
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* @return NoticeListItemAdapter adapter or null
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*/
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function adaptNoticeListItem($nli)
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{
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return null;
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}
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function oldShowNotice($nli)
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{
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$out = $nli->out;
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$notice = $nli->notice;
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try {
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$this->showNotice($notice, $out);
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} catch (Exception $e) {
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common_log(LOG_ERR, $e->getMessage());
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// try to fall back
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$out->elementStart('div');
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$nli->showAuthor();
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$nli->showContent();
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}
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$nli->showNoticeLink();
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$nli->showNoticeSource();
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$nli->showNoticeLocation();
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$nli->showContext();
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$nli->showRepeat();
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$out->elementEnd('div');
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$nli->showNoticeOptions();
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}
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/**
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* Render a notice as one of our objects
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*
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* @param Notice $notice Notice to render
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* @param ActivityObject &$object Empty object to fill
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*
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* @return boolean hook value
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*/
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function onStartActivityObjectFromNotice($notice, &$object)
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{
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if ($this->isMyNotice($notice)) {
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$object = $this->activityObjectFromNotice($notice);
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return false;
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}
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return true;
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}
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/**
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* Handle a posted object from PuSH
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*
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* @param Activity $activity activity to handle
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* @param Ostatus_profile $oprofile Profile for the feed
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*
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* @return boolean hook value
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*/
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function onStartHandleFeedEntryWithProfile($activity, $oprofile, &$notice)
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{
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if ($this->isMyActivity($activity)) {
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$actor = $oprofile->checkAuthorship($activity);
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if (!$actor instanceof Ostatus_profile) {
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// TRANS: Client exception thrown when no author for an activity was found.
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throw new ClientException(_('Cannot get author for activity.'));
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}
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$object = $activity->objects[0];
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$options = array('uri' => $object->id,
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'url' => $object->link,
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'is_local' => Notice::REMOTE,
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'source' => 'ostatus');
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// $actor is an ostatus_profile
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$notice = $this->saveNoticeFromActivity($activity, $actor->localProfile(), $options);
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return false;
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}
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return true;
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}
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/**
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* Handle a posted object from Salmon
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*
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* @param Activity $activity activity to handle
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* @param mixed $target user or group targeted
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*
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* @return boolean hook value
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*/
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function onStartHandleSalmonTarget($activity, $target)
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{
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if ($this->isMyActivity($activity)) {
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$this->log(LOG_INFO, "Checking {$activity->id} as a valid Salmon slap.");
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if ($target instanceof User_group) {
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$uri = $target->getUri();
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if (!array_key_exists($uri, $activity->context->attention)) {
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// @todo FIXME: please document (i18n).
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// TRANS: Client exception thrown when ...
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throw new ClientException(_('Object not posted to this group.'));
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}
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} else if ($target instanceof User) {
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$uri = $target->uri;
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$original = null;
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if (!empty($activity->context->replyToID)) {
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$original = Notice::getKV('uri',
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$activity->context->replyToID);
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}
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if (!array_key_exists($uri, $activity->context->attention) &&
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(empty($original) ||
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$original->profile_id != $target->id)) {
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// @todo FIXME: Please document (i18n).
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// TRANS: Client exception when ...
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throw new ClientException(_('Object not posted to this user.'));
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}
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} else {
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// TRANS: Server exception thrown when a micro app plugin uses a target that cannot be handled.
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throw new ServerException(_('Do not know how to handle this kind of target.'));
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}
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$actor = Ostatus_profile::ensureActivityObjectProfile($activity->actor);
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$object = $activity->objects[0];
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$options = array('uri' => $object->id,
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'url' => $object->link,
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'is_local' => Notice::REMOTE,
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'source' => 'ostatus');
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// $actor is an ostatus_profile
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$this->saveNoticeFromActivity($activity, $actor->localProfile(), $options);
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return false;
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}
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return true;
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}
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/**
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* Handle object posted via AtomPub
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*
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* @param Activity &$activity Activity that was posted
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* @param User $user User that posted it
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* @param Notice &$notice Resulting notice
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*
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* @return boolean hook value
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*/
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function onStartAtomPubNewActivity(&$activity, $user, &$notice)
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{
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if ($this->isMyActivity($activity)) {
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$options = array('source' => 'atompub');
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// $user->getProfile() is a Profile
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$notice = $this->saveNoticeFromActivity($activity,
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$user->getProfile(),
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$options);
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return false;
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}
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return true;
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}
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/**
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* Handle object imported from a backup file
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*
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* @param User $user User to import for
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* @param ActivityObject $author Original author per import file
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* @param Activity $activity Activity to import
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* @param boolean $trusted Is this a trusted user?
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* @param boolean &$done Is this done (success or unrecoverable error)
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*
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* @return boolean hook value
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*/
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function onStartImportActivity($user, $author, $activity, $trusted, &$done)
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{
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if ($this->isMyActivity($activity)) {
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$obj = $activity->objects[0];
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$options = array('uri' => $object->id,
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'url' => $object->link,
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'source' => 'restore');
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// $user->getProfile() is a Profile
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$saved = $this->saveNoticeFromActivity($activity,
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$user->getProfile(),
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$options);
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if (!empty($saved)) {
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$done = true;
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}
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return false;
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}
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return true;
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}
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/**
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* Event handler gives the plugin a chance to add custom
|
|
* Atom XML ActivityStreams output from a previously filled-out
|
|
* ActivityObject.
|
|
*
|
|
* The atomOutput method is called if it's one of
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|
* our matching types.
|
|
*
|
|
* @param ActivityObject $obj
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|
* @param XMLOutputter $out to add elements at end of object
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* @return boolean hook return value
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*/
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function onEndActivityObjectOutputAtom(ActivityObject $obj, XMLOutputter $out)
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{
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if (in_array($obj->type, $this->types())) {
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$this->activityObjectOutputAtom($obj, $out);
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}
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return true;
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}
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|
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/**
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|
* Event handler gives the plugin a chance to add custom
|
|
* JSON ActivityStreams output from a previously filled-out
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* ActivityObject.
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*
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* The activityObjectOutputJson method is called if it's one of
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* our matching types.
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|
*
|
|
* @param ActivityObject $obj
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* @param array &$out JSON-targeted array which can be modified
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* @return boolean hook return value
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*/
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function onEndActivityObjectOutputJson(ActivityObject $obj, array &$out)
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{
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if (in_array($obj->type, $this->types())) {
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$this->activityObjectOutputJson($obj, $out);
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}
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return true;
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}
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|
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function onStartShowEntryForms(&$tabs)
|
|
{
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$tabs[$this->tag()] = array('title' => $this->appTitle(),
|
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'href' => common_local_url($this->newFormAction()),
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|
);
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return true;
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}
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|
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function onStartMakeEntryForm($tag, $out, &$form)
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|
{
|
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if ($tag == $this->tag()) {
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$form = $this->entryForm($out);
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return false;
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}
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return true;
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}
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function showNotice($notice, $out)
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{
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// TRANS: Server exception thrown when a micro app plugin developer has not done his job too well.
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|
throw new ServerException(_('You must implement either adaptNoticeListItem() or showNotice().'));
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}
|
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}
|