Source: show.php

author: KlenWell

<?php
/**
 * Display a page if the user has read access or is an admin.
 *
 * This is the default page handler used by Wikka when no other handler is specified.
 * Depending on user privileges, it displays the page body or an error message. It also
 * displays footer comments and a form to post comments, depending on ACL and general
 * config settings.
 *
 * @package     Handlers
 * @subpackage  Page
 * @version     $Id$
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License
 * @filesource
 *
 * @uses        Wakka::Format()
 * @uses        Wakka::FormClose()
 * @uses        Wakka::FormOpen()
 * @uses        Wakka::GetConfigValue()
 * @uses        Wakka::GetPageTag()
 * @uses        Wakka::GetUser()
 * @uses        Wakka::GetUserName()
 * @uses        Wakka::HasAccess()
 * @uses        Wakka::Href()
 * @uses        Wakka::htmlspecialchars_ent()
 * @uses        Wakka::LoadComments()
 * @uses        Wakka::LoadPage()
 * @uses        Wakka::LoadUser()
 * @uses        Wakka::UserIsOwner()
 * @uses        Config::$anony_delete_own_comments
 * @uses        Config::$hide_comments
 *
 * @todo        move <div> to template;
 * @todo    replace $_REQUEST with either $_GET or $_POST (or both if really
 *          necessary) - #312  
 */

 
// *** Show Flags for Controller
$_SHOW['page_start'] = 0;
$_SHOW['no_access'] = 0;
$_SHOW['not_exists'] = 0;
$_SHOW['page_body'] = 0;
$_SHOW['revision_info'] = 0;
$_SHOW['revision_edit_form'] = 0;
$_SHOW['comments'] = 0;
$_SHOW['hidden_comments'] = 0;
$_SHOW['no_comments'] = 0;
$_SHOW['comment_form'] = 0;
$_SHOW['page_close'] = 0;

// *** HTML Blocks
$_HTML['page'] = '';
$_HTML['page_start'] = '';
$_HTML['no_access'] = '';
$_HTML['not_exists'] = '';
$_HTML['revision_info'] = '';
$_HTML['page_body'] = '';
$_HTML['revision_edit_form'] = '';
$_HTML['page_close_div'] = '';
$_HTML['comments_header'] = '';
$_HTML['comments'] = '';
$_HTML['comment_form'] = '';
$_HTML['hidden_comments'] = '';
$_HTML['page_close'] = '';



// *** Controller

    // Default Shows
    $_SHOW['page_start'] = 1;
    $_SHOW['page_close'] = 1;

    // Has Page Access
    if (!$this->HasAccess('read'))
    {
        $_SHOW['no_access'] = 1;
    }

    // Page Exists
    if ( !$this->page )
    {
        $_SHOW['not_exists'] = 1;
    }
    else
    {
        $_SHOW['page_body'] = 1;
    }
   
    // As Revision
    if ($this->page['latest'] == 'N')
    {
        $_SHOW['revision_info'] = 1;
    }

    // Revision w/ write access
    if ( ($this->page['latest'] == 'N' && $this->HasAccess('write')) && ($latest = $this->LoadPage($this->tag))  )
    {
        $_SHOW['revision_edit_form'] = 1;
    }
   
    // Show Comment Form
    if ( $this->GetConfigValue('hide_comments') != 1 )
    {
        // get page tag
        $tag = $this->GetPageTag();
       
        // session settings?
        if ( !isset($_SESSION['show_comments'][$tag]) )
        {
            $_SESSION['show_comments'][$tag] = ($this->UserWantsComments() ? '1' : '0');
        }
       
        // GET setting takes precedence
        if ( isset($_GET['show_comments']) ) #312
        {
            if ( $_GET['show_comments'] == 0 )
            {
                $_SESSION['show_comments'][$tag] = 0;
            }
            elseif ( $_GET['show_comments'] == 1 )
            {
                $_SESSION['show_comments'][$tag] = 1;
            }
        }
       
        if ($_SESSION['show_comments'][$tag])
        {
            $_SHOW['comment_form'] = 1;
        }
        else
        {
            $_SHOW['hidden_comments'] = 1;
        }
    }
   
    // Show Comments?
    $comments = $this->LoadComments($this->tag);
    if ( $_SESSION['show_comments'][$tag] && $comments )
    {
        $_SHOW['comments'] = 1;
    }
   
   
   
// *** Viewer Blocks

// Page Start
if ( $_SHOW['page_start'] )
{
    $_js = ( ($user = $this->GetUser()) && ($user['doubleclickedit'] == 'N') || !$this->HasAccess('write') ) ? '' : 'ondblclick="document.location=\''.$this->Href('edit').'\';" ';

    $_HTML['page_start'] = <<<HTML

<!--starting page content-->
<div class="page" {$_js }>

HTML;
}


// Generic
if ( $_SHOW['no_access'] )
{
    $_HTML['no_access'] = <<<HTML
   
<p><em class="error">You aren't allowed to read this page.</em></p>
</div>
   
HTML;

}


// Page does not exist yet
if ( $_SHOW['
not_exists'] )
{
    $_HTML['
not_exists'] = <<<HTML
   
<p>This page doesn'
t exist yet. Maybe you want to <a href="{$this->Href('edit')}">create</a> it?</p>
</div>
   
HTML;

}


// Revision Info
if ( $_SHOW['revision_info'] )
{
   
    $href = $this->Href();
    $alabel = $this->GetPageTag();
    $ptime = $this->page['time'];

    $_HTML['revision_info'] = <<<HTML

<div class="revisioninfo">
This is an old revision of <a href="{$href}">{$alabel}</a> from {$ptime}
</div>

HTML;

}


// Page Body
if ( $_SHOW['page_body'] )
{
    $_HTML['page_body'] = $this->Format($this->page['body'], 'wakka');
    $_HTML['page_close_div'] = "</div>\n";
}


// Revision Edit Form
if ( $_SHOW['revision_edit_form'] )
{
    $form_start = $this->FormOpen('edit');
    $lid = $latest['id'];
    $hvalue = $this->htmlspecialchars_ent($this->page['body']);
    $form_close = $this->FormClose();
   
    $_HTML['revision_edit_form'] = <<<HTML
   
<br />
$form_start
<input type="hidden" name="previous" value="$lid" />
<input type="hidden" name="body" value="$hvalue" />
<input type="submit" value="Re-edit this old revision" />
$form_close
   
HTML;

}


// Comments Header and Form
if ( $_SHOW['comment_form'] )
{
    $href = $this->Href('', '', 'show_comments=0');
   
    $_HTML['comments_header'] = <<<HTML

<div class="commentsheader">
<span id="comments">&nbsp;</span>Comments [<a href="$href">Hide comments/form</a>]
</div>

HTML;

    $form_start = $this->FormOpen('addcomment');
    $form_close = $this->FormClose();

    $_HTML['comment_form'] = <<<HTML

<div class="commentform">
$form_start
<label for="commentbox">Add a comment to this page:<br />
<textarea id="commentbox" name="body" rows="6" cols="78"></textarea><br />
<input type="submit" value="Add Comment" accesskey="s" />
</label>
$form_close
</div>
   
HTML;

}


// comments themselves
if ( $_SHOW['comments'] )
{
    $current_user = $this->GetUserName();
    $comment_stack = '';
   
    foreach ($comments as $comment)
    {
        $comment_stack .= '<div class="comment">'."\n";
        $comment_stack .= '<span id="comment_'.$comment['id'].'"></span>'.$comment['comment']."\n";
        $comment_stack .= "\t".'<div class="commentinfo">'."\n-- ";
        $comment_stack .= ( $this->LoadUser($comment['user']) ) ? $this->Format($comment['user']) : $comment['user'];
        $comment_stack .= ' ('.$comment['time'].')'."\n";
       
        // does comment get delete form?
        if ($this->UserIsOwner() || $current_user == $comment['user'] || ($this->config['anony_delete_own_comments'] && $current_user == $comment['user']) )
        {
            $comment_stack .= $this->FormOpen("delcomment");
            $comment_stack .= '<input type="hidden" name="comment_id" value="' . $comment['id'] . '" />';
            $comment_stack .= '<input type="submit" value="Delete Comment" />';
            $comment_stack .= $this->FormClose();
        }
                       
        $comment_stack .= "\n\t".'</div>'."\n";
        $comment_stack .= '</div>'."\n";
    }

    $_HTML['comments'] = $comment_stack;
}


// hidden comments
if ( $_SHOW['hidden_comments'] )
{
    switch (count($comments))
    {
        case 0:
            $comment_count = '<p>There are no comments on this page. ';
            $showcomments_text = 'Add comment';
            break;
       
        case 1:
            $comment_count = '<p>There is one comment on this page. ';
            $showcomments_text = 'Display comment';
            break;
           
        default:
            $comment_count = '<p>There are '.count($comments).' comments on this page. ';
            $showcomments_text = 'Display comments';
    }

    $href = $this->Href('', '', 'show_comments=1#comments');

    $_HTML['hidden_comments'] = <<<HTML
   
<div class="commentsheader">
$comment_count
[<a href="$href">$showcomments_text</a>]</p>
</div>

HTML;

}


// Page Close
if ( $_SHOW['page_close'] )
{
    $_HTML['page_close'] = <<<HTML

</div>
<!--closing page content-->

HTML;
}

// End Viewer Blocks


// *** TEMPLATE: stitch it all together
$_HTML['page'] = <<<HTML

{$_HTML['page_start']}
{$_HTML['no_access']}
{$_HTML['not_exists']}
{$_HTML['revision_info']}
{$_HTML['page_body']}
{$_HTML['revision_edit_form']}
{$_HTML['page_close_div']}
{$_HTML['comments_header']}
{$_HTML['comments']}
{$_HTML['comment_form']}
{$_HTML['hidden_comments']}
{$_HTML['page_close']}

HTML;

echo $_HTML['page'];

?>
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