Open Source Monorail

appengine/monorail/static/js/tracker/tracker-components.js

+/* Copyright 2016 The Chromium Authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style
+ * license that can be found in the LICENSE file or at
+ * https://developers.google.com/open-source/licenses/bsd
+ */
+
+/**
+ * This file contains JS code for editing components and component definitions.
+ */
+
+var TKR_leafNameXmlHttp;
+
+var TKR_leafNameRE = /^[a-zA-Z]([-_]?[a-zA-Z0-9])+$/;
+var TKR_oldName = '';
+
+/**
+ * Function to validate the component leaf name..
+ * @param {string} projectName Current project name.
+ * @param {string} parentPath Path to this component's parent.
+ * @param {string} originalName Original leaf name, keeping that is always OK.
+ * @param {string} token security token.
+ */
+function TKR_checkLeafName(projectName, parentPath, originalName, token) {
+  var name = $('leaf_name').value;
+  var feedback = $('leafnamefeedback');
+  if (name == originalName) {
+    $('submit_btn').disabled = '';
+    feedback.innerText = '';
+  } else if (name != TKR_oldName) {
+    $('submit_btn').disabled = 'disabled';
+    if (name == '') {
+      feedback.innerText = 'Please choose a name';
+    } else if (!TKR_leafNameRE.test(name)) {
+      feedback.innerText = 'Invalid component name';
+    } else if (name.length > 30) {
+      feedback.innerText = 'Name is too long';
+    } else {
+      TKR_checkLeafNameOnServer(projectName, parentPath, name, token);
+    }
+  }
+  TKR_oldName = name;
+}
+
+
+
+/**
+ * Function that communicates with the server.
+ * @param {string} projectName Current project name.
+ * @param {string} leafName The proposed leaf name.
+ * @param {string} token security token.
+ */
+function TKR_checkLeafNameOnServer(projectName, parentPath, leafName, token) {
+  var url = ('/p/' + projectName + '/components/checkName' +
+             '?parent_path=' + parentPath +
+             '&leaf_name=' + encodeURIComponent(leafName) +
+             '&token=' + token);
+  TKR_leafNameXmlHttp = XH_XmlHttpCreate();
+  XH_XmlHttpGET(TKR_leafNameXmlHttp, url, TKR_leafNameCallback);
+
+}
+
+/**
+ * The communication with the server has made some progress.  If it is
+ * done, then process the response.
+ */
+function TKR_leafNameCallback() {
+  if (TKR_leafNameXmlHttp.readyState == 4) {
+    if (TKR_leafNameXmlHttp.status == 200) {
+      TKR_gotLeafNameFeed(TKR_leafNameXmlHttp);
+    }
+  }
+}
+
+
+/**
+ * Function that evaluates the server response and sets the error message.
+ * @param {object} xhr AJAX response object.
+ */
+function TKR_gotLeafNameFeed(xhr) {
+  var json_data = null;
+  try {
+    json_data = CS_parseJSON(xhr);
+  }
+  catch (e) {
+    return;
+  }
+  var errorMessage = json_data['error_message'];
+  $('leafnamefeedback').innerText = errorMessage || '';
+
+  $('submit_btn').disabled = errorMessage ? 'disabled' : '';
+}