Examples of org.apache.wiki.WikiContext

org.apache.wiki.WikiContext

Provides state information throughout the processing of a page. A WikiContext is born when the JSP pages that are the main entry points, are invoked. The JSPWiki engine creates the new WikiContext, which basically holds information about the page, the handling engine, and in which context (view, edit, etc) the call was done.

A WikiContext also provides request-specific variables, which can be used to communicate between plugins on the same page, or between different instances of the same plugin. A WikiContext variable is valid until the processing of the page has ended. For an example, please see the Counter plugin.

When a WikiContext is created, it automatically associates a {@link WikiSession} object with the user's HttpSession. TheWikiSession contains information about the user's authentication status, and is consulted by {@link #getCurrentUser()}. object

Do not cache the page object that you get from the WikiContext; always use getPage()!
@see org.apache.wiki.plugin.Counter

        newPage = plugin.getNewEntryPage( m_testEngine, "TestBlog" );
        m_testEngine.saveText( newPage, "!Title2\r\n__Bar__" );


        RSSGenerator gen = m_testEngine.getRSSGenerator();


        WikiContext context = new WikiContext( m_testEngine, m_testEngine.getPage("TestBlog") );


        WeblogPlugin blogplugin = new WeblogPlugin();


        List entries = blogplugin.findBlogEntries( m_testEngine.getPageManager(),
                                                   "TestBlog",

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                m_iterator = versions.iterator();


                if( m_iterator.hasNext() )
                {
                    WikiContext context = (WikiContext)m_wikiContext.clone();
                    context.setPage( (WikiPage)m_iterator.next() );
                    pageContext.setAttribute( WikiTagBase.ATTR_CONTEXT,
                                              context,
                                              PageContext.REQUEST_SCOPE );
                    pageContext.setAttribute( getId(),
                                              context.getPage() );
                }
                else
                {
                    return SKIP_BODY;
                }

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            }
        }


        if( m_iterator != null && m_iterator.hasNext() )
        {
            WikiContext context = (WikiContext)m_wikiContext.clone();
            context.setPage( (WikiPage)m_iterator.next() );
            pageContext.setAttribute( WikiTagBase.ATTR_CONTEXT,
                                      context,
                                      PageContext.REQUEST_SCOPE );
            pageContext.setAttribute( getId(),
                                      context.getPage() );
            return EVAL_BODY_BUFFERED;
        }


        return SKIP_BODY;
    }

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    //        the old preferences still remain in a site cookie.
    public static void reloadPreferences( PageContext pageContext )
    {
        Preferences prefs = new Preferences();
        Properties props = PropertyReader.loadWebAppProps( pageContext.getServletContext() );
        WikiContext ctx = WikiContext.findContext( pageContext );
        
        prefs.put("SkinName", TextUtil.getStringProperty( props, "jspwiki.defaultprefs.template.skinname", "PlainVanilla" ) );
        prefs.put("DateFormat", 
                  TextUtil.getStringProperty( props, 
                                              "jspwiki.defaultprefs.template.dateformat", 
                                              ctx.getEngine().getInternationalizationManager().get( InternationalizationManager.CORE_BUNDLE, 
                                                                                                    getLocale( ctx ), 
                                                                                                    "common.datetimeformat" ) ) );


        prefs.put("TimeZone", TextUtil.getStringProperty( props, "jspwiki.defaultprefs.template.timezone", 
                                                          java.util.TimeZone.getDefault().getID() ) );

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    // FIXME: Messages would need to be localized somehow.
    public void doGet( HttpServletRequest  req, HttpServletResponse res )
        throws IOException, ServletException
    {
        WikiContext context = m_engine.createContext( req, WikiContext.ATTACH );


        String version  = req.getParameter( HDR_VERSION );
        String nextPage = req.getParameter( "nextpage" );


        String msg      = "An error occurred. Ouch.";
        int    ver      = WikiProvider.LATEST_VERSION;


        AttachmentManager mgr = m_engine.getAttachmentManager();
        AuthorizationManager authmgr = m_engine.getAuthorizationManager();




        String page = context.getPage().getName();


        if( page == null )
        {
            log.info("Invalid attachment name.");
            res.sendError( HttpServletResponse.SC_BAD_REQUEST );
            return;
        }


        OutputStream out = null;
        InputStream  in  = null;


        try
        {
            log.debug("Attempting to download att "+page+", version "+version);
            if( version != null )
            {
                ver = Integer.parseInt( version );
            }


            Attachment att = mgr.getAttachmentInfo( page, ver );


            if( att != null )
            {
                //
                //  Check if the user has permission for this attachment
                //


                Permission permission = PermissionFactory.getPagePermission( att, "view" );
                if( !authmgr.checkPermission( context.getWikiSession(), permission ) )
                {
                    log.debug("User does not have permission for this");
                    res.sendError( HttpServletResponse.SC_FORBIDDEN );
                    return;
                }

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        {
            FileItemFactory factory = new DiskFileItemFactory();
            
            // Create the context _before_ Multipart operations, otherwise
            // strict servlet containers may fail when setting encoding.
            WikiContext context = m_engine.createContext( req, WikiContext.ATTACH );


            UploadListener pl = new UploadListener();


            m_engine.getProgressManager().startProgress( pl, progressId );


            ServletFileUpload upload = new ServletFileUpload(factory);
            upload.setHeaderEncoding("UTF-8");
            if( !context.hasAdminPermissions() )
            {
                upload.setFileSizeMax( m_maxSize );
            }
            upload.setProgressListener( pl );
            List<FileItem> items = upload.parseRequest( req );

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        {
            // See similar note in PluginContent
            return m_varName;
        }
        
        WikiContext context = root.getContext();


        if( context == null )
            return "No WikiContext available: INTERNAL ERROR";
    
        Boolean wysiwygEditorMode = (Boolean)context.getVariable(RenderingManager.WYSIWYG_EDITOR_MODE);
        
        if( wysiwygEditorMode != null && wysiwygEditorMode.booleanValue() )
        {
            result = "[" + m_varName + "]";
        }
        else
        {
            try
            {
                result = context.getEngine().getVariableManager().parseAndGetValue( context, m_varName );
            }
            catch( NoSuchVariableException e )
            {
                result = JSPWikiMarkupParser.makeError("No such variable: "+e.getMessage()).getText(); 
            }

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        LinkCollector localCollector = new LinkCollector();
        LinkCollector extCollector   = new LinkCollector();
        LinkCollector attCollector   = new LinkCollector();


        WikiContext context = new WikiContext( m_engine, page );
        context.setVariable( WikiEngine.PROP_REFSTYLE, "absolute" );


        m_engine.textToHTML( context,
                             pagedata,
                             localCollector,
                             extCollector,
                             attCollector );


        Vector<Hashtable<String, String>> result = new Vector<Hashtable<String, String>>();


        // FIXME: Contains far too much common with RPCHandler.  Refactor!


        //
        //  Add local links.
        //
        for( Iterator< String > i = localCollector.getLinks().iterator(); i.hasNext(); )
        {
            String link = i.next();
            Hashtable< String, String > ht = new Hashtable< String, String >();
            ht.put( "page", link );
            ht.put( "type", LINK_LOCAL );


            if( m_engine.pageExists(link) )
            {
                ht.put( "href", context.getViewURL(link) );
            }
            else
            {
                ht.put( "href", context.getURL(WikiContext.EDIT,link) );
            }


            result.add( ht );
        }


        //
        // Add links to inline attachments
        //
        for( Iterator i = attCollector.getLinks().iterator(); i.hasNext(); )
        {
            String link = (String) i.next();


            Hashtable<String, String> ht = new Hashtable<String, String>();


            ht.put( "page", link );
            ht.put( "type", LINK_LOCAL );
            ht.put( "href", context.getURL(WikiContext.ATTACH,link) );


            result.add( ht );
        }


        //

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    private String getPageDescription( WikiPage page )
    {
        StringBuffer buf = new StringBuffer();
        String author = getAuthor(page);


        WikiContext ctx = new WikiContext( m_engine, page );
        if( page.getVersion() > 1 )
        {
            String diff = m_engine.getDiff( ctx,
                                            page.getVersion()-1, // FIXME: Will fail when non-contiguous versions
                                            page.getVersion() );

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     *  
     *  @return A RSS 1.0 feed in the "full" mode.
     */
    public String generate()
    {
        WikiContext context = new WikiContext( m_engine,new WikiPage( m_engine, "__DUMMY" ) );
        context.setRequestContext( WikiContext.RSS );
        Feed feed = new RSS10Feed( context );


        String result = generateFullWikiRSS( context, feed );


        result = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" + result;

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Related Classes of org.apache.wiki.WikiContext

org.apache.wiki.attachment.AttachmentManagerTest

org.apache.wiki.attachment.AttachmentServlet

org.apache.wiki.auth.acl.DefaultAclManager

org.apache.wiki.auth.permissions.AllPermission

org.apache.wiki.auth.user.UserDatabase

org.apache.wiki.auth.UserManager

org.apache.wiki.dav.items.HTMLPageDavItem

org.apache.wiki.diff.ContextualDiffProviderTest

org.apache.wiki.filters.SpamFilter

org.apache.wiki.parser.JSPWikiMarkupParser

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