From 46e550f4a718584c054a36e8fa4ff6206b522b2f Mon Sep 17 00:00:00 2001
From: capynet <capy.net@gmail.com>
Date: Sun, 26 Jan 2014 11:35:22 +0100
Subject: [PATCH] Re-roll

---
 .../lib/Drupal/system/Form/ModulesListForm.php     |  6 ++
 core/modules/system/system.modules.js              | 78 ++++++++++++++++++++++
 2 files changed, 84 insertions(+)

diff --git a/core/modules/system/lib/Drupal/system/Form/ModulesListForm.php b/core/modules/system/lib/Drupal/system/Form/ModulesListForm.php
index a090c67..2705f90 100644
--- a/core/modules/system/lib/Drupal/system/Form/ModulesListForm.php
+++ b/core/modules/system/lib/Drupal/system/Form/ModulesListForm.php
@@ -136,6 +136,8 @@ public function buildForm(array $form, array &$form_state) {
     uasort($form['modules'], 'element_sort_by_title');
 
     $form['#attached']['library'][] = array('system', 'drupal.system.modules');
+    $form['#attached']['library'][] = array('system', 'drupal.dialog.ajax');
+
     $form['actions'] = array('#type' => 'actions');
     $form['actions']['submit'] = array(
       '#type' => 'submit',
@@ -220,6 +222,10 @@ protected function buildRow(array $modules, $module, $distribution) {
       '#title' => $this->t('Install'),
       '#default_value' => (bool) $module->status,
       '#disabled' => (bool) $module->status,
+      '#attributes' => array(
+        'data-module' => $module->name,
+        'data-requires' => implode(',', array_keys($module->requires)),
+      ),
     );
 
     // Disable the checkbox for required modules.
diff --git a/core/modules/system/system.modules.js b/core/modules/system/system.modules.js
index 4d97652..30380c9 100644
--- a/core/modules/system/system.modules.js
+++ b/core/modules/system/system.modules.js
@@ -57,4 +57,82 @@ Drupal.behaviors.tableFilterByText = {
   }
 };
 
+  /**
+   * Display an alert for dependant modules.
+   */
+  Drupal.behaviors.moduleDependencies = {
+    attach: function (context, settings) {
+
+      var moduleDependencies = this;
+
+      $('input[data-requires!=""]').once('module-dependency').on('click', function () {
+
+        var $that = $(this);
+
+        if ($that.is(':checked') && !moduleDependencies.gettingDependencies) {
+          var dependenciesList = $that.attr('data-requires').split(',');
+          var $dependencies = Drupal.system.getDependencies(dependenciesList);
+          if ($dependencies.length) {
+
+            var messageTitle = Drupal.t('Some required modules must be enabled');
+            var message = Drupal.formatPlural(
+                $dependencies.length,
+                'You must enable the !required module to install !module.',
+                'You must enable the !required modules to install !module.',
+                {'!required': dependenciesList.join(', '), '!module': $that.attr('data-module')}
+            );
+            var messageFooter = Drupal.t('Would you like to continue with the above?');
+
+            $('<div title="' + messageTitle + '">' +
+                '<p>' + message + '</p>' +
+                '<p>' + messageFooter + '</p>' +
+                '</div>').dialog({
+              resizable: false,
+              modal: true,
+              buttons: {
+                Confirm: function () {
+                  $(this).dialog("close");
+                  moduleDependencies.gettingDependencies = true;
+                  $dependencies.click();
+                  moduleDependencies.gettingDependencies = false;
+                },
+                Cancel: function () {
+                  $(this).dialog("close");
+                  $that.attr('checked', false);
+                }
+              },
+              beforeClose: function (event) {
+                if (event.keyCode === $.ui.keyCode.ESCAPE) {
+                  $that.attr('checked', false);
+                }
+              }
+            });
+          }
+        }
+      });
+    },
+
+    gettingDependencies: false
+  };
+
+  Drupal.system = {
+    /**
+     * Returns a jQuery collection of unchecked inputs from the dependency list
+     *
+     * @param {Array} list
+     *   Array of ids
+     */
+    getDependencies: function (list) {
+      return $('input[data-module]').filter(function () {
+        var $that = $(this);
+        var required = $.inArray($that.attr('data-module'), list) !== -1;
+        var notEnabled = true;
+        if (required) {
+          notEnabled = !$that.is(':checked');
+        }
+        return required && notEnabled;
+      });
+    }
+  };
+
 }(jQuery, Drupal));
-- 
1.8.5.2.msysgit.0