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script-embeder.php
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<?php
/*
Plugin Name: Script Embeder
Plugin URI: http://cibergeek.com
Description: Javascript embeding done simple
Author: Tomas Cot
Version: 0.3
Author URI: http://cibergeek.com
*/
// ACTIONS GO HERE
add_action('add_meta_boxes', 'script_embeder_meta_box');
add_action('save_post', 'script_embeder_save_data');
add_action('admin_enqueue_scripts', 'script_embeder_post_js_script');
add_action('wp_head', 'script_embeder_head');
add_action('wp_footer', 'script_embeder_footer');
function script_embeder_meta_box(){
add_meta_box('script_embeder_div', 'Script Embeder', 'script_embeder_box_generator', 'post', 'normal', 'high');
}
function script_embeder_box_generator($post){
$content = '';
wp_nonce_field('script_embeder_save', 'script_embeder_nonce');
if(get_post_meta($post->ID, 'script_embeder')){
$script_embeder_values = get_post_meta($post->ID, 'script_embeder');
$script_embeder_values = $script_embeder_values[0]; //for PHP < 5.4
$keys = array_keys($script_embeder_values);
sort($keys);
$last_key = $keys[sizeOf($keys)-1];
$content ='<script type="text/javascript">var script_embeder_add_count=' . ($last_key). ';</script>
<div><input type="button" name="script_embeder_ok" onClick="script_embeder_add_script()" value="Add"></div>';
foreach($script_embeder_values as $i=>$elem){
$content .= '<div id="script_embeder_' . $i . '" ><select name="script_embeder[' . $i . '][type]">
<option value="script" ' . (($script_embeder_values[$i]["type"] == "script") ? 'selected' : 'none') . '>Script</option>
<option value="src" ' . (($script_embeder_values[$i]["type"] == "src") ? 'selected' : 'none') . '>SRC</option>
</select>
<select name="script_embeder[' . $i . '][position]">
<option value="head" ' . (($script_embeder_values[$i]["position"] == "head") ? 'selected' : 'none') . '>HEAD</option>
<option value="footer" ' . (($script_embeder_values[$i]["position"] == "footer") ? 'selected' : 'none') . '>FOOTER</option>
</select>
<label>Order</label><input type="number" name="script_embeder[' . $i . '][order]" value="' . $script_embeder_values[$i]["order"] . '">
<label>Content</label><textarea name="script_embeder[' . $i . '][js]" value="">' . $script_embeder_values[$i]["js"] . '</textarea>
<input type="button" name="script_embeder_ok" onClick="script_embeder_delete_script(' . $i . ')" value="Remove">
</div>';
}
} else{
$content .= '<script type="text/javascript">var script_embeder_add_count=0;</script>
<div><input type="button" name="script_embeder_ok" onClick="script_embeder_add_script()" value="Add"></div>
<div id="script_embeder_0"><select name="script_embeder[0][type]">
<option value="script">Script</option>
<option value="src">SRC</option>
</select>
<select name="script_embeder[0][position]">
<option value="head">HEAD</option>
<option value="footer">FOOTER</option>
</select>
<label>Order</label><input type="number" name="script_embeder[0][order]" value="">
<label>Content</label><textarea name="script_embeder[0][js]" value=""></textarea>
<input type="button" name="script_embeder_ok" onClick="script_embeder_delete_script(0)" value="Remove">
</div>';
}
echo $content;
}
function script_embeder_save_data($post_id){
if (!isset($_POST['script_embeder'])){
return;
}
if(!wp_verify_nonce($_POST['script_embeder_nonce'], 'script_embeder_save')){
return;
}
update_post_meta($post_id, 'script_embeder', $_POST['script_embeder']);
}
function script_embeder_post_js_script(){
wp_enqueue_script('script_embeder_append_script', plugins_url('/script-embeder/js/script_embeder_post_js.js'), array('jquery'));
}
/**
* Sort function used to sort the scripts depending on the order assigned by the user.
*/
function script_embeder_sort_function($a, $b){
if($a['order']<$b['order']){
return -1;
}else{
return ($a['order']>$b['order'])? 1 : 0;
}
}
function script_embeder_head(){
if(is_single() && get_post_meta(get_queried_object_id(), 'script_embeder')){
$pm = get_post_meta(get_queried_object_id(), 'script_embeder');
$pm = $pm[0]; //for PHP < 5.4
$res = usort($pm, 'script_embeder_sort_function');
$scripts = '';
for($i = 0; $i < sizeOf($pm); $i++){
if($pm[$i]['position'] == 'head'){
if($pm[$i]['type'] == 'src'){
$scripts .= '<script src="' . $pm[$i]['js'] . '"></script>';
} else{
$scripts .= '<script type="text/javascript">' . $pm[$i]['js'] . '</script>';
}
}
}
echo $scripts;
}
}
function script_embeder_footer(){
if(is_single() && get_post_meta(get_queried_object_id(), 'script_embeder')){
$pm = get_post_meta(get_queried_object_id(), 'script_embeder');
$pm = $pm[0]; //for PHP < 5.4
$res = usort($pm, 'script_embeder_sort_function');
$scripts = '';
for($i = 0; $i < sizeOf($pm); $i++){
if($pm[$i]['position'] == 'footer'){
if($pm[$i]['type'] == 'src'){
$scripts .= '<script src="' . $pm[$i]['js'] . '"></script>';
} else{
$scripts .= '<script type="text/javascript">' . $pm[$i]['js'] . '</script>';
}
}
}
echo $scripts;
}
}
?>