wow it's working

classes/DailyImageWidget.php

@@ -32,13 +32,14 @@ class DailyImageWidget {
     } else {
       $this->data = false;
     }
-    
-    $this->display_options = $this->get_display_options();
   }
   
   function _init() {
     register_sidebar_widget(__("HubbleSite Daily Image", "hubblesite-daily-image-widget"), array($this, "render"));  
     register_widget_control(__("HubbleSite Daily Image", "hubblesite-daily-image-widget"), array($this, "render_ui"));  
+    
+    $this->handle_post();
+    $this->get_display_options();
   }
   
   function _connection_warning() {
@@ -66,6 +67,21 @@ class DailyImageWidget {
     }
   }
 
+  function handle_post() {
+    if (isset($_POST['hubblesite']['_wpnonce'])) {
+      if (wp_verify_nonce($_POST['hubblesite']['_wpnonce'], 'hubble')) {
+        $options = array();
+        foreach ($this->_valid_options as $option => $label) {
+          if (isset($_POST['hubblesite'][$option])) {
+            $options[] = $option;
+          }
+        }
+        $this->display_options = $options;
+        update_option('hubblesite-daily-image-options', implode(",", $this->display_options));
+      }
+    }
+  }
+
   /**
    * Get the list of display options from the WordPress options database.
    */
@@ -127,13 +143,14 @@ class DailyImageWidget {
   }
   
   function render_ui() {
+    echo "<input type=\"hidden\" name=\"hubblesite[_wpnonce]\" value=\"" . wp_create_nonce('hubble') . "\" />";
     echo "<p>";
-      _e("Show on Widget:", "hubblesite-daily-image-widget");
+      _e("Show on Widget <em>(must select at least one)</em>:", "hubblesite-daily-image-widget");
     echo "</p>";
     
     foreach ($this->_valid_options as $option => $label) {
       echo "<label>";
-        echo "<input type=\"checkbox\" name=\"hubblesite[${option}]\" />";
+        echo "<input type=\"checkbox\" name=\"hubblesite[${option}]\" " . (in_array($option, $this->display_options) ? "checked=\"checked\"" : "") . "/> ";
         echo $label;
       echo "</label>";
       echo "<br />";

test/DailyImageWidgetTest.php

@@ -8,6 +8,8 @@ require_once(dirname(__FILE__) . '/../../mockpress/mockpress.php');
 class DailyImageWidgetTest extends PHPUnit_Framework_TestCase {
   function setUp() {
     _reset_wp();
+    wp_create_nonce("hubble");
+    $_POST = array();
     
     $this->diw = new DailyImageWidget(true);
     
@@ -133,6 +135,70 @@ class DailyImageWidgetTest extends PHPUnit_Framework_TestCase {
     $this->assertTrue(get_option('hubblesite-daily-image-options') !== false);
   }
   
+  function testCheckedOptions() {
+    $this->diw->display_options = array_keys($this->diw->_valid_options);
+    
+    ob_start();
+    $this->diw->render_ui();
+    $result = ob_get_clean();
+    
+    $this->assertTrue(($xml = _to_xml($result, true)) !== false);
+    
+    foreach ($this->diw->display_options as $option) {
+      $this->assertTrue(_node_exists($xml, '//input[@name="hubblesite[' . $option . ']" and @checked="checked"]'));
+    }
+  }
+  
+  function providerTestUpdateOptions() {
+    $d = new DailyImageWidget(true);
+    $default_display_options = $d->default_display_options;
+
+    return array(
+      array(
+        array(),
+        $default_display_options
+      ),
+      array(
+        array(
+          'save-widgets' => "yes"
+        ),
+        $default_display_options
+      ),
+      array(
+        array(
+          'hubblesite' => array(
+            '_wpnonce' => "~*NONCE*~"
+          )
+        ),
+        $default_display_options
+      ),
+      array(
+        array(
+          'hubblesite' => array(
+            '_wpnonce' => "~*NONCE*~",
+            'credits' => "yes"
+          )
+        ),
+        array("credits")
+      ),
+    );
+  }
+  
+  /**
+   * @dataProvider providerTestUpdateOptions
+   */
+  function testUpdateOptions($post, $result) {   
+    $_POST = $post;
+    
+    if (isset($_POST['hubblesite']['_wpnonce'])) {
+      $_POST['hubblesite']['_wpnonce'] = _get_nonce('hubble');
+    }
+    
+    $this->diw->handle_post();
+    $this->diw->get_display_options();
+    $this->assertEquals($result, $this->diw->display_options);
+  }
+  
   function providerTestParseBadXML() {
     return array(
       array(null),
@@ -187,7 +253,13 @@ class DailyImageWidgetTest extends PHPUnit_Framework_TestCase {
     foreach ($this->diw->_valid_options as $option => $label) {
       $xpath = "//label[contains(text(), '${label}')]";      
       $this->assertTrue(_xpath_test($xml, $xpath, true), $xpath);
-    }    
+    }
+    
+    foreach (array(
+      '//input[@type="hidden" and @name="hubblesite[_wpnonce]"]' => true
+    ) as $xpath => $value) {
+      $this->assertTrue(_xpath_test($xml, $xpath, $value), $xpath);
+    }
   }
   
   function testGetCachedData() {