1 files changed, 94 insertions, 0 deletions
diff --git a/remote/test/puppeteer/src/common/FileChooser.ts b/remote/test/puppeteer/src/common/FileChooser.ts
new file mode 100644
index 0000000000..c0a68ff967
--- /dev/null
+++ b/remote/test/puppeteer/src/common/FileChooser.ts
@@ -0,0 +1,94 @@
+/**
+ * Copyright 2020 Google Inc. All rights reserved.
+ *
+ * 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
+ *
+ *     http://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.
+ */
+
+import {Protocol} from 'devtools-protocol';
+import {assert} from '../util/assert.js';
+import {ElementHandle} from './ElementHandle.js';
+
+/**
+ * File choosers let you react to the page requesting for a file.
+ *
+ * @remarks
+ * `FileChooser` instances are returned via the {@link Page.waitForFileChooser} method.
+ *
+ * In browsers, only one file chooser can be opened at a time.
+ * All file choosers must be accepted or canceled. Not doing so will prevent
+ * subsequent file choosers from appearing.
+ *
+ * @example
+ *
+ * ```ts
+ * const [fileChooser] = await Promise.all([
+ *   page.waitForFileChooser(),
+ *   page.click('#upload-file-button'), // some button that triggers file selection
+ * ]);
+ * await fileChooser.accept(['/tmp/myfile.pdf']);
+ * ```
+ *
+ * @public
+ */
+export class FileChooser {
+  #element: ElementHandle<HTMLInputElement>;
+  #multiple: boolean;
+  #handled = false;
+
+  /**
+   * @internal
+   */
+  constructor(
+    element: ElementHandle<HTMLInputElement>,
+    event: Protocol.Page.FileChooserOpenedEvent
+  ) {
+    this.#element = element;
+    this.#multiple = event.mode !== 'selectSingle';
+  }
+
+  /**
+   * Whether file chooser allow for
+   * {@link https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/file#attr-multiple | multiple}
+   * file selection.
+   */
+  isMultiple(): boolean {
+    return this.#multiple;
+  }
+
+  /**
+   * Accept the file chooser request with given paths.
+   *
+   * @param filePaths - If some of the `filePaths` are relative paths, then
+   * they are resolved relative to the
+   * {@link https://nodejs.org/api/process.html#process_process_cwd | current working directory}.
+   */
+  async accept(filePaths: string[]): Promise<void> {
+    assert(
+      !this.#handled,
+      'Cannot accept FileChooser which is already handled!'
+    );
+    this.#handled = true;
+    await this.#element.uploadFile(...filePaths);
+  }
+
+  /**
+   * Closes the file chooser without selecting any files.
+   */
+  cancel(): void {
+    assert(
+      !this.#handled,
+      'Cannot cancel FileChooser which is already handled!'
+    );
+    this.#handled = true;
+  }
+}