init III

Perl OTRS/Kernel/Output/HTML/Templates/Standard/HTMLHeadBlockEvents.tt

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+# --
+# Copyright (C) 2001-2019 OTRS AG, https://otrs.com/
+# --
+# This software comes with ABSOLUTELY NO WARRANTY. For details, see
+# the enclosed file COPYING for license information (GPL). If you
+# did not receive this file, see https://www.gnu.org/licenses/gpl-3.0.txt.
+# --
+## nofilter(TidyAll::Plugin::OTRS::TT::ScriptUsage)
+
+<script type="text/javascript">//<![CDATA[
+"use strict";
+
+var Core = Core || {};
+Core.App = Core.App || {};
+
+/**
+ * @function
+ *      Ignores an event. Implemented without jQuery because no external JavaScript is available yet.
+ * @return nothing
+ */
+function IgnoreEvent (Event) {
+    if (Event.preventDefault) {
+        Event.preventDefault();
+    }
+    Event.returnValue = false;
+    return false;
+}
+
+/**
+ * @function
+ *      This function blocks all click events on the page until it is
+ *      unblocked after all JavaScript was loaded. Implemented without
+ *      jQuery because no external JavaScript is available yet.
+ * @return nothing
+ */
+Core.App.BlockEvents = function() {
+    if (document.addEventListener) {
+        document.addEventListener('click', IgnoreEvent, false);
+    }
+    else {
+        document.attachEvent('onclick', IgnoreEvent);
+    }
+};
+
+/**
+ * @function
+ *      This function unblocks all click events on the page
+ *      after all JavaScript was loaded. Implemented without
+ *      jQuery because no external JavaScript is available yet.
+ * @return nothing
+ */
+Core.App.UnblockEvents = function() {
+    if (document.removeEventListener) {
+        document.removeEventListener('click', IgnoreEvent, false);
+    }
+    else {
+        document.detachEvent('onclick', IgnoreEvent);
+    }
+    // allow tests to wait for complete page load
+    Core.App.PageLoadComplete = true;
+};
+
+// Now block all click events on the page to make sure that
+// an agent does not click before all JavaScript was loaded,
+// as event listeners are not yet available, for example.
+Core.App.BlockEvents();
+//]]></script>