GIZ-348: Remove tabsactivate event listener for Contact Summary tabs

CRM/Civicase/Hook/PageRun/AddContactPageSummaryResources.php

@@ -1,7 +1,7 @@
 <?php
 
 /**
- * Class CRM_Civicase_Hook_PageRun_AddContactPageSummaryResources.
+ * Handles Contact Record Summary Page display.
  */
 class CRM_Civicase_Hook_PageRun_AddContactPageSummaryResources {
 
@@ -23,7 +23,8 @@ public function run(&$page) {
    * Add resources (CSS and JS) for this Page.
    */
   private function addResources() {
-    // Adds Moment.js file.
+    Civi::resources()
+      ->addScriptFile('uk.co.compucorp.civicase', 'js/disable-contact-summary-tab-activate.js', 2, 'html-header');
     CRM_Core_Resources::singleton()
       ->addScriptFile('uk.co.compucorp.civicase', 'packages/moment.min.js');
   }

js/disable-contact-summary-tab-activate.js

@@ -0,0 +1,31 @@
+(function ($) {
+  /**
+   * The following line of code is to fix GIZ-348.
+   *
+   * In Contact Summary tab, we faced an issue where if we click 2 angular based
+   * tabs(For example: Activity, Case, Awards tabs) very quickly. Then thousands
+   * of network requests are being sent to the backend, which is freezing the
+   * webpage and sometimes crashing the server.
+   *
+   * This issue was found after upgrading to CiviCRM 5.51 from 5.39.
+   *
+   * Later we identified the issue in CiviCRM core, specifically in
+   * https://github.com/civicrm/civicrm-core/commit/1ed9f5c505fc61802542e8dc05415fe4a1d99198.
+   *
+   * In the above commit in CiviCRM core, code was introduced to add `selectedChild`
+   * query parameter whenever we click on a Contact Summary page tab. And because
+   * of this, as the route was changed, AngularJS router was getting confused.
+   *
+   * So we are adding this fix, where we remove the `tabsactivate` listener from
+   * `#mainTabContainer` so that `selectedChild` is not added to the URL.
+   *
+   * Note: This is not a perfect solution, but it will work fine for now.
+   * In the long run, we should try to contact with CiviCRM core, and get it fixed
+   * there. This issue should be reproducible(need to confirm) in a vanilla
+   * CiviCRM Core site, with https://github.com/civicrm/org.civicrm.civicase installed.
+   * That way it will be easier to convince Core team to fix this.
+   */
+  $(function ($) {
+    $('#mainTabContainer').off('tabsactivate');
+  });
+})(CRM.$);