From 3e201321402866ac6fb201f071e0562bbdc3b18f Mon Sep 17 00:00:00 2001
From: mzd <mzd@ginkgostreet.com>
Date: Wed, 30 Apr 2014 20:23:18 -0400
Subject: [PATCH] CRM-14353 js function to store initial form values; php to
 enable warning on add/edit forms;

----------------------------------------
* CRM-14353: Fix formNavigate to work with multiple forms & ajax
  https://issues.civicrm.org/jira/browse/CRM-14353
---
 CRM/Core/Form.php |  9 +++++++++
 js/Common.js      | 20 ++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/CRM/Core/Form.php b/CRM/Core/Form.php
index 69e1233d51..bd212a6ed0 100644
--- a/CRM/Core/Form.php
+++ b/CRM/Core/Form.php
@@ -416,6 +416,15 @@ class CRM_Core_Form extends HTML_QuickForm_Page {
     CRM_Utils_Hook::buildForm(get_class($this), $this);
 
     $this->addRules();
+
+    //Set html data-attribute to enable warning user of unsaved changes
+    if ($this->unsavedChangesWarn === true
+        || (!isset($this->unsavedChangesWarn)
+           && ($this->_action & CRM_Core_Action::ADD || $this->_action & CRM_Core_Action::UPDATE)
+           )
+        ) {
+          $this->setAttribute('data-warn-changes', 'true');
+    }
   }
 
   /**
diff --git a/js/Common.js b/js/Common.js
index 2df825d164..1db3a81090 100644
--- a/js/Common.js
+++ b/js/Common.js
@@ -238,6 +238,22 @@ CRM.validate = CRM.validate || {
     });
   };
 
+/**
+ * Compare Form Input values against cached initial value.
+ * True if changes have been made.
+ * @returns {Boolean}
+ */
+  CRM.utils.initialValueChanged = function(el) {
+    var isDirty = false
+    $(':input', el).each(function () {
+        if($(this).data('crm-initial-value') !== undefined
+                && $(this).data('crm-initial-value') != $(this).val()){
+            isDirty = true;
+        }
+    });
+    return isDirty;
+  }
+
   /**
    * Wrapper for select2 initialization function; supplies defaults
    * @param options object
@@ -422,6 +438,10 @@ CRM.validate = CRM.validate || {
         .find('input.select-row:checked').parents('tr').addClass('crm-row-selected');
       $('.crm-select2:not(.select2-offscreen, .select2-container)', e.target).crmSelect2();
       $('.crm-form-entityref:not(.select2-offscreen, .select2-container)', e.target).crmEntityRef();
+      // Cache Form Input initial values
+      $('form[data-warn-changes] :input', e.target).each( function() {
+        $(this).data('crm-initial-value', $(e.target).val());
+      });
     })
     .on('dialogopen', function(e) {
       var $el = $(e.target);
-- 
2.25.1