<?php

/*

Plugin Name: Add To Facebook

Version: 1.4.3

Plugin URI: http://nothing.golddave.com/?page_id=108

Description: Adds a footer link to add the current post or page to a Facebook Mini-Feed.

Author: David Goldstein

Author URI: http://nothing.golddave.com/

*/

/*

Change Log

1.4.3

  * Improved option saving mechanism to avoid conflicts with other plugins.

1.4.2

  * Added a title specs to the links.

1.4.1

  * Added slashes at end of image tags per XHTML specification.

1.4

  * Added CSS.

  * Fixed bug that prevented the Facebook icon to appear in version 1.3.

1.3

  * Links now open in a new tab/window.

1.2

  * Added option to use a template tag.

  * Fixed bug that prevented the Facebook icon to appear in version 1.1.

1.1

  * Added options page to choose between text/image links.

1.0

  * First public release.

*/ 

function add_to_facebook($data){

	global $post;

	$current_options = get_option('add_to_facebook_options');

	$linktype = $current_options['link_type'];

	switch ($linktype) {

		case "text":

			$data=$data."<p class=\"facebook\"><a href=\"http://www.facebook.com/share.php?u=".get_permalink($post->ID)."\" target=\"_blank\" title=\"Share on Facebook\">Share on Facebook</a></p>";

			break;

		case "image":

			$data=$data."<p class=\"facebook\"><a href=\"http://www.facebook.com/share.php?u=".get_permalink($post->ID)."\" target=\"_blank\"><img src=\"".get_bloginfo(wpurl)."/wp-content/plugins/add-to-facebook-plugin/facebook_share_icon.gif\" alt=\"Share on Facebook\" title=\"Share on Facebook\" /></a></p>";

			break;

		case "both":

			$data=$data."<p class=\"facebook\"><a href=\"http://www.facebook.com/share.php?u=".get_permalink($post->ID)."\" target=\"_blank\"><img src=\"".get_bloginfo(wpurl)."/wp-content/plugins/add-to-facebook-plugin/facebook_share_icon.gif\" alt=\"Share on Facebook\" title=\"Share on Facebook\" /></a><a href=\"http://www.facebook.com/share.php?u=".get_permalink($post->ID)."\" target=\"_blank\" title=\"Share on Facebook\">Share on Facebook</a></p>";

			break;

		}

		return $data;

}

function activate_add_to_facebook(){

	global $post;

	$current_options = get_option('add_to_facebook_options');

	$insertiontype = $current_options['insertion_type'];

	if ($insertiontype != 'template'){

		add_filter('the_content', 'add_to_facebook', 10);

		add_filter('the_excerpt', 'add_to_facebook', 10);

	}

}

activate_add_to_facebook();

function addtofacebook(){

	global $post;

	$current_options = get_option('add_to_facebook_options');

	$insertiontype = $current_options['insertion_type'];

	if ($insertiontype != 'auto'){

		$linktype = $current_options['link_type'];

		switch ($linktype) {

			case "text":

				echo "<p class=\"facebook\"><a href=\"http://www.facebook.com/share.php?u=".get_permalink($post->ID)."\" target=\"_blank\" title=\"Share on Facebook\">Share on Facebook</a></p>";

				break;

			case "image":

				echo "<p class=\"facebook\"><a href=\"http://www.facebook.com/share.php?u=".get_permalink($post->ID)."\" target=\"_blank\"><img src=\"".get_bloginfo(wpurl)."/wp-content/plugins/add-to-facebook-plugin/facebook_share_icon.gif\" alt=\"Share on Facebook\" title=\"Share on Facebook\" /></a></p>";

				break;

			case "both":

				echo "<p class=\"facebook\"><a href=\"http://www.facebook.com/share.php?u=".get_permalink($post->ID)."\" target=\"_blank\"><img src=\"".get_bloginfo(wpurl)."/wp-content/plugins/add-to-facebook-plugin/facebook_share_icon.gif\" alt=\"Share on Facebook\" title=\"Share on Facebook\" /></a><a href=\"http://www.facebook.com/share.php?u=".get_permalink($post->ID)."\" target=\"_blank\" title=\"Share on Facebook\">Share on Facebook</a></p>";

				break;

			}

		}

}

// Create the options page

function add_to_facebook_options_page() { 

	$current_options = get_option('add_to_facebook_options');

	$link = $current_options["link_type"];

	$insert = $current_options["insertion_type"];

	if ($_POST['action']){ ?>

		<div id="message" class="updated fade"><p><strong>Options saved.</strong></p></div>

	<?php } ?>

	<div class="wrap" id="add-to-facebook-options">

		<h2>Add to Facebook Options</h2>

		<form method="post" action="<?php echo $_SERVER['PHP_SELF']."?".$_SERVER['QUERY_STRING']; ?>">

			<fieldset>

				<legend>Options:</legend>

				<input type="hidden" name="action" value="save_add_to_facebook_options" />

				<table width="100%" cellspacing="2" cellpadding="5" class="editform">

					<tr>

						<th valign="top" scope="row"><label for="link_type">Link Type:</label></th>

						<td><select name="link_type">

						<option value ="text"<?php if ($link == "text") { print " selected"; } ?>>Text Only</option>

						<option value ="image"<?php if ($link == "image") { print " selected"; } ?>>Image Only</option>

						<option value ="both"<?php if ($link == "both") { print " selected"; } ?>>Image and Text</option>

						</select></td>

					</tr>

					<tr>

						<th valign="top" scope="row"><label for="insertion_type">Insertion Type:</label></th>

						<td><select name="insertion_type">

						<option value ="auto"<?php if ($insert == "auto") { print " selected"; } ?>>Auto</option>

						<option value ="template"<?php if ($insert == "template") { print " selected"; } ?>>Template</option>

						</select></td>

					</tr>

				</table>

			</fieldset>

			<p class="submit">

				<input type="submit" name="Submit" value="Update Options &raquo;" />

			</p>

		</form>

	</div>

<?php 

}

function add_to_facebook_add_options_page() {

	// Add a new menu under Options:

	add_options_page('Add to Facebook', 'Add to Facebook', 10, __FILE__, 'add_to_facebook_options_page');

}

function add_to_facebook_save_options() {

	// create array

	$add_to_facebook_options["link_type"] = $_POST["link_type"];

	$add_to_facebook_options["insertion_type"] = $_POST["insertion_type"];

	update_option('add_to_facebook_options', $add_to_facebook_options);

	$options_saved = true;

}

add_action('admin_menu', 'add_to_facebook_add_options_page');

if (!get_option('add_to_facebook_options')){

	// create default options

	$add_to_facebook_options["link_type"] = 'text';

	$add_to_facebook_options["insertion_type"] = 'auto';

	update_option('add_to_facebook_options', $add_to_facebook_options);

}

if ($_POST['action'] == 'save_add_to_facebook_options'){

	add_to_facebook_save_options();

}

function facebookcss() {

	?>

	<link rel="stylesheet" href="<?php bloginfo('wpurl'); ?>/wp-content/plugins/add-to-facebook-plugin/facebook.css" type="text/css" media="screen" />

	<?php

}

add_action('wp_head', 'facebookcss');

?>