Add dialogs example

Author: grant

ui/dialogs.gs

@@ -0,0 +1,47 @@
+/**
+ * Copyright Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// [START apps_script_dialogs]
+/**
+ * Creates a custom menu when a user opens a Spreadsheet.
+ */
+function onOpen() {
+  SpreadsheetApp.getUi() // Or DocumentApp or SlidesApp or FormApp.
+    .createMenu('Custom Menu')
+    .addItem('Show alert', 'showAlert')
+    .addToUi();
+}
+
+/**
+ * Shows an alert dialog.
+ */
+function showAlert() {
+  var ui = SpreadsheetApp.getUi(); // Same variations.
+
+  var result = ui.alert(
+    'Please confirm',
+    'Are you sure you want to continue?',
+    ui.ButtonSet.YES_NO);
+
+  // Process the user's response.
+  if (result === ui.Button.YES) {
+    // User clicked "Yes".
+    ui.alert('Confirmation received.');
+  } else {
+    // User clicked "No" or X in the title bar.
+    ui.alert('Permission denied.');
+  }
+}
+// [END apps_script_dialogs]