=====""ShowComments"" Handler=====

>>==See also:==
Documentation: ShowCommentsHandlerInfo.>>This is the development page for the ""ShowComments"" handler.::c::
""ShowComments"" handler let you to see a page containing only the comments.
It is useful if, as example, a page is really long and is long to load, too many content or too slow connection. If you want to see the comments, you don't want to wait the page to load, especially when there are many comments page (paged comments).
I'm sure of this : **This handler can be improved**.

Now, the code :
%%(php)
<?php
	        // set default number of comments per page
	        $d = ($_SESSION["limit_comments"])? $_SESSION["limit_comments"] : "10";

	        // set default visualization to "paged"
	        $showall = ($_REQUEST["showall"])? $_REQUEST["showall"] : "0";

	        // get total number of comments for current page
	        $n = count($this->LoadComments($this->tag));
	       
	        // calculate starting item of last page
	        $lastcomments = ceil($n/$d)*$d;
	        $start = ($n > $d)? ($lastcomments-$d) : "0";

	        // set starting item and limit
	        $s = (isset($_REQUEST["s"]))? $_REQUEST["s"] : $start;
	        $l = (isset($_REQUEST["l"]))? $_REQUEST["l"] : $d;           
	        // set no limits for showall visualization
	        if ($showall == 1) {
	            $s = "0";
	            $l = "999";
	        }

	        // Build pager links:

	        // FLAVOUR B) - pagelist

	        if ($showall == 0 && $n > $l) {
	            $i = 0;
	            while ($i < $n) {
	                if ($i == $s) {
	                    $pager .= ($i+1)."-".($i+$l)." | \n";
	                } else {
	                    $pager .= "<a href=\"".$this->Href("showcomments","","l=".$l."&s=".($i))."\">".($i+1)."-".($i + $l)."</a> | \n";
	                }
	            $i = $i + $l;
	            }
	        }


	        // create switcher link
	        switch($showall) {

	            case "0":
	            $switcher = ($n > $l)? " <a href=\"".$this->Href("showcomments","","showall=1")."\">all</a> " : "";
	            break;

	            case "1":
	            $switcher = ($n > $d)? " <a href=\"".$this->Href("showcomments","","showall=0")."\">show paged</a> " : "";
	        }


	        // load comments for this page with limits
	        $comments = $this->LoadCommentPage($this->tag, $s, $l);

	        // store comments display in session
	        $tag = $this->GetPageTag();
	        if (!isset($_SESSION["show_comments"][$tag]))
	            $_SESSION["show_comments"][$tag] = ($this->UserWantsComments() ? "1" : "0");
	        if (isset($_REQUEST["show_comments"])){   
	            switch($_REQUEST["show_comments"])
	            {
	            case "0":
	                $_SESSION["show_comments"][$tag] = 0;
	                break;
	            case "1":
	                $_SESSION["show_comments"][$tag] = 1;
	                break;
	            }
	        }
	        // display comments!
	            // display comments header
	            ?>
	            <div class="commentsheader">
	            <span id="comments">&nbsp;</span>Comments <?php echo "(".$n.") ".$pager.$switcher; ?>
	            </div>
	            <?php
	            // display comments themselves
	            if ($comments)
	            {
	                $current_user = $this->GetUserName();
	                foreach ($comments as $comment)
	                {
	                    print("<div class=\"comment\">\n");
	                    print("<span id=\"comment_".$comment["id"]."\"></span>".$comment["comment"]."\n");
	                    print("\t<div class=\"commentinfo\">\n-- ".$this->Format($comment["user"])." (".$comment["time"].")\n");
	                    $current_user = $this->GetUserName();
	                        if ($this->UserIsOwner() || $current_user == $comment["user"] || ($this->config['anony_delete_own_comments'] && $current_user == $comment["user"]) )
	                    {
	                    ?>
	                    <?php echo $this->FormOpen("delcomment"); ?>
	                       <input type="hidden" name="comment_id" value="<?php echo $comment["id"] ?>" />
	                       <input type="submit" value="Delete Comment" accesskey="d" />
	                    <?php echo $this->FormClose(); ?>
	                    <?php
	                    }
	                    print("\n\t</div>\n");
	                    print("</div>\n");
	                }
	                // Show bottom pager link
	                if ($showall == 0 && $n > $l) {
	                    print "<div class=\"commentsheader\">".$pager.$switcher."</div>\n";   
	                }
	            }
	            // display comment form
	            print("<div class=\"commentform\">\n");
	            if ($this->HasAccess("comment"))
	            {?>
	                    <?php echo $this->FormOpen("addcomment"); ?>
	                <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>
	                <?php echo $this->FormClose(); ?>
	            <?php
	            }
	            print("</div>\n");
?>
%%

And finally, to make it redirect back on the handler's page, when posting a new comment :
 modify pages/addcomment.php
FIND :
%%(php)
	// redirect to page
	$this->redirect($this->Href(), $redirectmessage);
%%
Replace with :
%%(php)
	if ($_POST['from'] == 'showcomments') {
		$href = $this->Href().'/showcomments';
	}
	else {
		$href = $this->Href();
	}
	
	// redirect to page
	$this->redirect($href, $redirectmessage);
%%

If there is any issue or bug, comment and correct it.
As usual.

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CategoryDevelopment