add support for editor helpers, starting with partials

addons/Core/Core.inc

@@ -5,7 +5,7 @@ class ComicPressAddonCore extends ComicPressAddon {
    * Initialize the addon.
    * @param ComicPress $comicpress The master ComicPress object.
    */
-  function init($comicpress) {
+  function init(&$comicpress) {
     add_action('admin_menu', array(&$this, 'setup_admin_interface'));
     add_filter('attachment_fields_to_edit', array(&$this, 'setup_comic_metadata_buttons'), 10, 2);
     add_action('show_comic', array(&$this, 'show_comic'), 1, 1);
@@ -372,6 +372,7 @@ class ComicPressAddonCore extends ComicPressAddon {
    * Update ComicPress options.
    */
   function handle_update_comicpress_options() {
+    $this->comicpress->comicpress_options['helpers'] = array();
     foreach ($this->comicpress->comicpress_options as $option => $value) {
       if (isset($_POST['cp'][$option])) {
         switch ($option) {
@@ -415,7 +416,12 @@ class ComicPressAddonCore extends ComicPressAddon {
           case 'category_page_usage':
           case 'layout';
             $this->comicpress->comicpress_options[$option] = $_POST['cp'][$option];
-            break;            
+            break;
+          case 'helpers':
+            foreach ($_POST['cp'][$option] as $helper => $set) {
+              $this->comicpress->comicpress_options['helpers'][$helper] = true;
+            }
+            break;
         }
       }
     }

addons/Core/partials/options-admin.inc

@@ -2,7 +2,8 @@
   <h2><?php _e('ComicPress Config', 'comicpress') ?></h2>
   <form method="post">
     <input type="hidden" name="cp[_nonce]" value="<?php echo $nonce ?>" />
-    <table>
+    <h3><?php _e('Global Options', 'comicpress') ?></h3>
+    <table class="widefat fixed">
       <tr>
         <th scope="row" valign="top"><?php _e('Master Comic Category', 'comicpress') ?></th>
         <td>
@@ -93,10 +94,23 @@
           <?php } ?>
         </td>
       </tr>
+    </table>
+    <h3><?php _e('Admin Options', 'comicpress') ?></h3>
+    <table class="widefat fixed">
       <tr>
-        <td>&nbsp;</td>
-        <td><input type="submit" value="<?php _e("Submit Changes", 'comicpress') ?>" /></td>
+        <th scope="row">
+          Enable editing helpers
+        </th>
+        <td>
+          <?php
+            foreach (array(
+              "show_partials_info" => __('Show partials info', 'comicpress')
+            ) as $key => $label) { ?>
+              <label><input type="checkbox" name="cp[helpers][<?php echo $key ?>]" value="yes" <?php echo (($this->comicpress->comicpress_options['helpers'][$key] === true) ? 'checked="checked"' : '') ?> /> <?php echo $label ?></label>
+            <?php }
+          ?>
+        </td>
       </tr>
     </table>
-  </form>
+    <input type="submit" value="<?php _e("Submit Changes", 'comicpress') ?>" />  </form>
 </div>

classes/ComicPress.inc

@@ -14,7 +14,8 @@ class ComicPress {
     'blogpost_count'      => 10,
     'comic_space'         => 'comic_only',
     'category_page_usage' => 'archive_list',
-    'layout'              => 'classic.inc'
+    'layout'              => 'classic.inc',
+    'helpers'             => array()
   );
   
   var $additional_stylesheets = array();
@@ -56,6 +57,17 @@ class ComicPress {
     $this->sort_comic_categories();
     
     add_action('wp_head', array(&$this, 'wp_head'));
+
+    if (current_user_can('edit_themes')) {
+      if (!empty($this->comicpress_options['helpers'])) {
+        if (isset($this->comicpress_options['helpers']['show_partials_info'])) {
+          add_filter('comicpress_partial', array(&$this, 'comicpress_partial'), 10, 2);
+          add_action('wp_head', array(&$this, 'setup_comicpress_partial'));
+        }
+        
+        add_action('wp_footer', array(&$this, 'announce_activated_helpers'));
+      }
+    }
   }
 
   function wp_head() {
@@ -66,6 +78,43 @@ class ComicPress {
       <script type="text/javascript" src="<?php echo get_template_directory_uri() . $uri ?>"></script>
     <?php }
   }
+  
+  function announce_activated_helpers() {
+    echo "<center>[ <strong>Activated ComicPress helpers:</strong> " . implode(", ", array_keys($this->comicpress_options['helpers'])) . " ]</center>";
+  }
+  
+  function setup_comicpress_partial() { ?>
+    <style type="text/css">
+      .partial-helper {
+        position: absolute;
+        z-index: 100;
+        padding: 4px;
+        border: solid #333 1px;
+        background-color: #447;
+        opacity: 0.1;
+        -moz-opacity: 0.1;
+        -khtml-opacity: 0.1;
+        zoom: 1;
+        cursor: crosshair
+      }
+      
+      .partial-helper:hover {
+        opacity: 1;
+        -moz-opacity: 1;
+        -khtml-opacity: 1;
+      }
+    </style>
+    <!--[if IE gte 6]>
+      <style type="text/css">
+        .partial-helper { filter: alpha(opacity=10); }
+        .partial-helper:hover { filter: alpha(opacity=100); }
+      </style>
+    <![endif]-->
+  <?php }
+  
+  function comicpress_partial($content, $target) {
+    return '<div class="partial-helper">' . substr(realpath($target), strlen(realpath(get_template_directory())) + 1) . '</div>' . $content;
+  }
 
   /**
    * Flatten all WP categories into nodes like 0/3/5.

functions.php

@@ -95,7 +95,11 @@ function include_partial($partials = '') {
 
   $target = $comicpress->get_partial_path($partials);
   
-  if ($target !== false) { include($target); }
+  if ($target !== false) {
+    ob_start();
+    include($target);
+    echo apply_filters("comicpress_partial", ob_get_clean(), $target);
+  }
 }
 
 function in_comic_category() {