Update to MediaWiki 1.18.0

* also update ArchLinux skin to chagnes in MonoBook
* Use only css to hide our menu bar when printing

1 files changed, 467 insertions, 0 deletions

diff --git a/includes/Action.php b/includes/Action.php
new file mode 100644
index 00000000..d5432b23
--- /dev/null
+++ b/includes/Action.php
@@ -0,0 +1,467 @@
+<?php
+/**
+ * Actions are things which can be done to pages (edit, delete, rollback, etc).  They
+ * are distinct from Special Pages because an action must apply to exactly one page.
+ *
+ * To add an action in an extension, create a subclass of Action, and add the key to
+ * $wgActions.  There is also the deprecated UnknownAction hook
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ *
+ * @file
+ */
+abstract class Action {
+
+	/**
+	 * Page on which we're performing the action
+	 * @var Article
+	 */
+	protected $page;
+
+	/**
+	 * IContextSource if specified; otherwise we'll use the Context from the Page
+	 * @var IContextSource
+	 */
+	protected $context;
+
+	/**
+	 * The fields used to create the HTMLForm
+	 * @var Array
+	 */
+	protected $fields;
+
+	/**
+	 * Get the Action subclass which should be used to handle this action, false if
+	 * the action is disabled, or null if it's not recognised
+	 * @param $action String
+	 * @param $overrides Array
+	 * @return bool|null|string
+	 */
+	private final static function getClass( $action, array $overrides ) {
+		global $wgActions;
+		$action = strtolower( $action );
+
+		if ( !isset( $wgActions[$action] ) ) {
+			return null;
+		}
+
+		if ( $wgActions[$action] === false ) {
+			return false;
+		} elseif ( $wgActions[$action] === true && isset( $overrides[$action] ) ) {
+			return $overrides[$action];
+		} elseif ( $wgActions[$action] === true ) {
+			return ucfirst( $action ) . 'Action';
+		} else {
+			return $wgActions[$action];
+		}
+	}
+
+	/**
+	 * Get an appropriate Action subclass for the given action
+	 * @param $action String
+	 * @param $page Article
+	 * @return Action|false|null false if the action is disabled, null
+	 *     if it is not recognised
+	 */
+	public final static function factory( $action, Page $page ) {
+		$class = self::getClass( $action, $page->getActionOverrides() );
+		if ( $class ) {
+			$obj = new $class( $page );
+			return $obj;
+		}
+		return $class;
+	}
+
+	/**
+	 * Check if a given action is recognised, even if it's disabled
+	 *
+	 * @param $name String: name of an action
+	 * @return Bool
+	 */
+	public final static function exists( $name ) {
+		return self::getClass( $name ) !== null;
+	}
+
+	/**
+	 * Get the IContextSource in use here
+	 * @return IContextSource
+	 */
+	protected final function getContext() {
+		if ( $this->context instanceof IContextSource ) {
+			return $this->context;
+		}
+		return $this->page->getContext();
+	}
+
+	/**
+	 * Get the WebRequest being used for this instance
+	 *
+	 * @return WebRequest
+	 */
+	protected final function getRequest() {
+		return $this->getContext()->getRequest();
+	}
+
+	/**
+	 * Get the OutputPage being used for this instance
+	 *
+	 * @return OutputPage
+	 */
+	protected final function getOutput() {
+		return $this->getContext()->getOutput();
+	}
+
+	/**
+	 * Shortcut to get the User being used for this instance
+	 *
+	 * @return User
+	 */
+	protected final function getUser() {
+		return $this->getContext()->getUser();
+	}
+
+	/**
+	 * Shortcut to get the Skin being used for this instance
+	 *
+	 * @return Skin
+	 */
+	protected final function getSkin() {
+		return $this->getContext()->getSkin();
+	}
+
+	/**
+	 * Shortcut to get the user Language being used for this instance
+	 *
+	 * @return Skin
+	 */
+	protected final function getLang() {
+		return $this->getContext()->getLang();
+	}
+
+	/**
+	 * Shortcut to get the Title object from the page
+	 * @return Title
+	 */
+	protected final function getTitle() {
+		return $this->page->getTitle();
+	}
+
+	/**
+	 * Protected constructor: use Action::factory( $action, $page ) to actually build
+	 * these things in the real world
+	 * @param Page $page
+	 */
+	protected function __construct( Page $page ) {
+		$this->page = $page;
+	}
+
+	/**
+	 * Return the name of the action this object responds to
+	 * @return String lowercase
+	 */
+	public abstract function getName();
+
+	/**
+	 * Get the permission required to perform this action.  Often, but not always,
+	 * the same as the action name
+	 */
+	public abstract function getRestriction();
+
+	/**
+	 * Checks if the given user (identified by an object) can perform this action.  Can be
+	 * overridden by sub-classes with more complicated permissions schemes.  Failures here
+	 * must throw subclasses of ErrorPageError
+	 *
+	 * @param $user User: the user to check, or null to use the context user
+	 * @throws ErrorPageError
+	 */
+	protected function checkCanExecute( User $user ) {
+		if ( $this->requiresWrite() && wfReadOnly() ) {
+			throw new ReadOnlyError();
+		}
+
+		if ( $this->getRestriction() !== null && !$user->isAllowed( $this->getRestriction() ) ) {
+			throw new PermissionsError( $this->getRestriction() );
+		}
+
+		if ( $this->requiresUnblock() && $user->isBlocked() ) {
+			$block = $user->mBlock;
+			throw new UserBlockedError( $block );
+		}
+	}
+
+	/**
+	 * Whether this action requires the wiki not to be locked
+	 * @return Bool
+	 */
+	public function requiresWrite() {
+		return true;
+	}
+
+	/**
+	 * Whether this action can still be executed by a blocked user
+	 * @return Bool
+	 */
+	public function requiresUnblock() {
+		return true;
+	}
+
+	/**
+	 * Set output headers for noindexing etc.  This function will not be called through
+	 * the execute() entry point, so only put UI-related stuff in here.
+	 */
+	protected function setHeaders() {
+		$out = $this->getOutput();
+		$out->setRobotPolicy( "noindex,nofollow" );
+		$out->setPageTitle( $this->getPageTitle() );
+		$this->getOutput()->setSubtitle( $this->getDescription() );
+		$out->setArticleRelated( true );
+	}
+
+	/**
+	 * Returns the name that goes in the \<h1\> page title
+	 *
+	 * @return String
+	 */
+	protected function getPageTitle() {
+		return $this->getTitle()->getPrefixedText();
+	}
+
+	/**
+	 * Returns the description that goes below the \<h1\> tag
+	 *
+	 * @return String
+	 */
+	protected function getDescription() {
+		return wfMsg( strtolower( $this->getName() ) );
+	}
+
+	/**
+	 * The main action entry point.  Do all output for display and send it to the context
+	 * output.  Do not use globals $wgOut, $wgRequest, etc, in implementations; use
+	 * $this->getOutput(), etc.
+	 * @throws ErrorPageError
+	 */
+	public abstract function show();
+
+	/**
+	 * Execute the action in a silent fashion: do not display anything or release any errors.
+	 * @param $data Array values that would normally be in the POST request
+	 * @param $captureErrors Bool whether to catch exceptions and just return false
+	 * @return Bool whether execution was successful
+	 */
+	public abstract function execute();
+}
+
+abstract class FormAction extends Action {
+
+	/**
+	 * Get an HTMLForm descriptor array
+	 * @return Array
+	 */
+	protected abstract function getFormFields();
+
+	/**
+	 * Add pre- or post-text to the form
+	 * @return String HTML which will be sent to $form->addPreText()
+	 */
+	protected function preText() { return ''; }
+	protected function postText() { return ''; }
+
+	/**
+	 * Play with the HTMLForm if you need to more substantially
+	 * @param $form HTMLForm
+	 */
+	protected function alterForm( HTMLForm $form ) {}
+
+	/**
+	 * Get the HTMLForm to control behaviour
+	 * @return HTMLForm|null
+	 */
+	protected function getForm() {
+		$this->fields = $this->getFormFields();
+
+		// Give hooks a chance to alter the form, adding extra fields or text etc
+		wfRunHooks( 'ActionModifyFormFields', array( $this->getName(), &$this->fields, $this->page ) );
+
+		$form = new HTMLForm( $this->fields, $this->getContext() );
+		$form->setSubmitCallback( array( $this, 'onSubmit' ) );
+
+		// Retain query parameters (uselang etc)
+		$form->addHiddenField( 'action', $this->getName() ); // Might not be the same as the query string
+		$params = array_diff_key(
+			$this->getRequest()->getQueryValues(),
+			array( 'action' => null, 'title' => null )
+		);
+		$form->addHiddenField( 'redirectparams', wfArrayToCGI( $params ) );
+
+		$form->addPreText( $this->preText() );
+		$form->addPostText( $this->postText() );
+		$this->alterForm( $form );
+
+		// Give hooks a chance to alter the form, adding extra fields or text etc
+		wfRunHooks( 'ActionBeforeFormDisplay', array( $this->getName(), &$form, $this->page ) );
+
+		return $form;
+	}
+
+	/**
+	 * Process the form on POST submission.  If you return false from getFormFields(),
+	 * this will obviously never be reached.  If you don't want to do anything with the
+	 * form, just return false here
+	 * @param  $data Array
+	 * @return Bool|Array true for success, false for didn't-try, array of errors on failure
+	 */
+	public abstract function onSubmit( $data );
+
+	/**
+	 * Do something exciting on successful processing of the form.  This might be to show
+	 * a confirmation message (watch, rollback, etc) or to redirect somewhere else (edit,
+	 * protect, etc).
+	 */
+	public abstract function onSuccess();
+
+	/**
+	 * The basic pattern for actions is to display some sort of HTMLForm UI, maybe with
+	 * some stuff underneath (history etc); to do some processing on submission of that
+	 * form (delete, protect, etc) and to do something exciting on 'success', be that
+	 * display something new or redirect to somewhere.  Some actions have more exotic
+	 * behaviour, but that's what subclassing is for :D
+	 */
+	public function show() {
+		$this->setHeaders();
+
+		// This will throw exceptions if there's a problem
+		$this->checkCanExecute( $this->getUser() );
+
+		$form = $this->getForm();
+		if ( $form->show() ) {
+			$this->onSuccess();
+		}
+	}
+
+	/**
+	 * @see Action::execute()
+	 * @throws ErrorPageError
+	 * @param array|null $data
+	 * @param bool $captureErrors
+	 * @return bool
+	 */
+	public function execute( array $data = null, $captureErrors = true ) {
+		try {
+			// Set a new context so output doesn't leak.
+			$this->context = clone $this->page->getContext();
+
+			// This will throw exceptions if there's a problem
+			$this->checkCanExecute( $this->getUser() );
+
+			$fields = array();
+			foreach ( $this->fields as $key => $params ) {
+				if ( isset( $data[$key] ) ) {
+					$fields[$key] = $data[$key];
+				} elseif ( isset( $params['default'] ) ) {
+					$fields[$key] = $params['default'];
+				} else {
+					$fields[$key] = null;
+				}
+			}
+			$status = $this->onSubmit( $fields );
+			if ( $status === true ) {
+				// This might do permanent stuff
+				$this->onSuccess();
+				return true;
+			} else {
+				return false;
+			}
+		}
+		catch ( ErrorPageError $e ) {
+			if ( $captureErrors ) {
+				return false;
+			} else {
+				throw $e;
+			}
+		}
+	}
+}
+
+/**
+ * Actions generally fall into two groups: the show-a-form-then-do-something-with-the-input
+ * format (protect, delete, move, etc), and the just-do-something format (watch, rollback,
+ * patrol, etc).
+ */
+abstract class FormlessAction extends Action {
+
+	/**
+	 * Show something on GET request.
+	 * @return String|null will be added to the HTMLForm if present, or just added to the
+	 *     output if not.  Return null to not add anything
+	 */
+	public abstract function onView();
+
+	/**
+	 * We don't want an HTMLForm
+	 */
+	protected function getFormFields() {
+		return false;
+	}
+
+	public function onSubmit( $data ) {
+		return false;
+	}
+
+	public function onSuccess() {
+		return false;
+	}
+
+	public function show() {
+		$this->setHeaders();
+
+		// This will throw exceptions if there's a problem
+		$this->checkCanExecute( $this->getUser() );
+
+		$this->getOutput()->addHTML( $this->onView() );
+	}
+
+	/**
+	 * Execute the action silently, not giving any output.  Since these actions don't have
+	 * forms, they probably won't have any data, but some (eg rollback) may do
+	 * @param $data Array values that would normally be in the GET request
+	 * @param $captureErrors Bool whether to catch exceptions and just return false
+	 * @return Bool whether execution was successful
+	 */
+	public function execute( array $data = null, $captureErrors = true ) {
+		try {
+			// Set a new context so output doesn't leak.
+			$this->context = clone $this->page->getContext();
+			if ( is_array( $data ) ) {
+				$this->context->setRequest( new FauxRequest( $data, false ) );
+			}
+
+			// This will throw exceptions if there's a problem
+			$this->checkCanExecute( $this->getUser() );
+
+			$this->onView();
+			return true;
+		}
+		catch ( ErrorPageError $e ) {
+			if ( $captureErrors ) {
+				return false;
+			} else {
+				throw $e;
+			}
+		}
+	}
+}