? system.js
Index: system.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.module,v
retrieving revision 1.435
diff -u -r1.435 system.module
--- system.module	2 Jan 2007 05:05:38 -0000	1.435
+++ system.module	5 Jan 2007 08:29:19 -0000
@@ -1249,6 +1249,10 @@
 
   // Array for disabling checkboxes in callback system_module_disable.
   $disabled = array();
+  // Array of dependencies for passing to js.
+  $dependencies_js = array();
+  // Array of dependents for passing to js.
+  $dependents_js = array();
   // Traverse the files retrieved and build the form.
   foreach ($files as $filename => $file) {
     $form['name'][$filename] = array('#value' => $file->info['name']);
@@ -1265,6 +1269,7 @@
     $dependencies = array();
     // Check for missing dependencies.
     if (is_array($file->info['dependencies'])) {
+      $dependencies_js[$file->name] = $file->info['dependencies'];
       foreach ($file->info['dependencies'] as $dependency) {
         if (!isset($files[$dependency]) || !$files[$dependency]->status) {
           if (isset($files[$dependency])) {
@@ -1294,6 +1299,7 @@
     // Mark dependents disabled so user can not remove modules being depended on.
     $dependents = array();
     if (is_array($file->info['dependents'])) {
+      $dependents_js[$file->name] = $file->info['dependents'];
       foreach ($file->info['dependents'] as $dependent) {
         if ($files[$dependent]->status == 1) {
           $dependents[] = $files[$dependent]->info['name'] . t(' (<span class="admin-enabled">enabled</span>)');
@@ -1316,6 +1322,10 @@
     }
   }
 
+  // Pass dependency data to the browser.
+  drupal_add_js(array('moduleDependencies' => array('dependencies' => $dependencies_js, 'dependents' => $dependents_js)), 'setting');
+  drupal_add_js(drupal_get_path('module', 'system') .'/system.js');
+
   // Merge in required modules.
   $modules_required = array('block', 'filter', 'node', 'system', 'user', 'watchdog');
   foreach ($modules_required as $required) {
--- modules/system/system.js
+++ modules/system/system.js
@@ -0,0 +1,46 @@
+/* $Id: $ */
+
+Drupal.systemAutoAttach = function () {
+  $('#system-modules input[@type=checkbox]')
+    .click(function () {
+      Drupal.moduleDependencies(this);
+    });
+}
+
+Drupal.moduleDependencies = function (elt) {
+  var dependencies = Drupal.settings.moduleDependencies['dependencies'][elt.value];
+  if (dependencies && dependencies.length) {
+    for (i in dependencies) {
+      $('#edit-status-' + dependencies[i]).each(function () {
+        if (elt.checked) {
+          $(this)
+            .attr('checked', 'checked')
+            .attr('disabled', 'disabled');
+        }
+        else {
+          if ($(this).attr('disabled')) {
+            var disabled = false;
+            var dependents = Drupal.settings.moduleDependencies['dependents'][dependencies[i]];
+            if (dependents && dependents.length) {
+              for (j in dependents) {
+                if ($('#edit-status-' + dependents[j]).attr('checked')) {
+                  disabled = true;
+                  break;
+                }
+              }
+              if (disabled == false) {
+                $('#edit-status-' + dependencies[i]).attr('disabled', false);
+              }
+            }
+          }
+        }
+        Drupal.moduleDependencies(this);
+      });
+    }
+  }
+}
+
+// Global killswitch.
+if (Drupal.jsEnabled) {
+  $(document).ready(Drupal.systemAutoAttach);
+}