[CCA] Convert intent.js into ES6 module.

Bug: 141518780
Test: Pass closure compiler check, tast run <DUT> 'camera.CCAUI*' and manually
validate tooltips function of CCA works correctly.

Change-Id: I718ce2f7ac43ef6778091170b00ffb6367f4a9ca
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1982339
Commit-Queue: Kuo Jen Wei <inker@chromium.org>
Auto-Submit: Kuo Jen Wei <inker@chromium.org>
Reviewed-by: Shik Chen <shik@chromium.org>
Cr-Commit-Position: refs/heads/master@{#727453}

chrome/browser/resources/chromeos/camera/src/js/intent.js

@@ -2,22 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-'use strict';
-
-/**
- * Namespace for the Camera app.
- */
-var cca = cca || {};
-
-/**
- * Namespace for the ARC++ intent.
- */
-cca.intent = cca.intent || {};
+import {ChromeHelper} from './mojo/chrome_helper.js';
+import {Mode} from './type.js';
 
 /**
  * Thrown when fails to parse intent url.
  */
-cca.intent.ParseError = class extends Error {
+export class ParseError extends Error {
   /**
    * @param {!URL} url Intent url.
    */
@@ -29,18 +20,18 @@ cca.intent.ParseError = class extends Error {
      */
     this.url_ = url;
 
-    this.name = 'ParseError';
+    this.name = this.constructor.name;
   }
-};
+}
 
 /**
  * Intent from ARC++.
  */
-cca.intent.Intent = class {
+export class Intent {
   /**
    * @param {!URL} url
    * @param {number} intentId
-   * @param {cca.Mode} mode
+   * @param {Mode} mode
    * @param {boolean} shouldHandleResult
    * @param {boolean} shouldDownScale
    * @param {boolean} isSecure
@@ -60,7 +51,7 @@ cca.intent.Intent = class {
 
     /**
      * Capture mode of intent.
-     * @const {cca.Mode}
+     * @const {Mode}
      */
     this.mode = mode;
 
@@ -92,11 +83,11 @@ cca.intent.Intent = class {
   }
 
   /**
-   * @return {!cca.mojo.ChromeHelper}
+   * @return {!ChromeHelper}
    * @private
    */
   get chromeHelper_() {
-    return cca.mojo.ChromeHelper.getInstance();
+    return ChromeHelper.getInstance();
   }
 
   /**
@@ -156,27 +147,30 @@ cca.intent.Intent = class {
 
   /**
    * @param {!URL} url Url passed along with app launch event.
-   * @return {!cca.intent.Intent} Created intent object. Returns null if input
-   *     is not a valid intent url.
-   * @throws {cca.intent.ParseError}
+   * @return {!Intent} Created intent object. Returns null if input is not a
+   *     valid intent url.
+   * @throws {ParseError}
    */
   static create(url) {
     const params = url.searchParams;
     const getBool = (key) => params.get(key) === '1';
     let param = params.get('intentId');
     if (param === null) {
-      throw new cca.intent.ParseError(url);
+      throw new ParseError(url);
     }
     const intentId = parseInt(param, 10);
 
     param = params.get('mode');
-    if (param === null || !Object.values(cca.Mode).includes(param)) {
-      throw new cca.intent.ParseError(url);
+    if (param === null || !Object.values(Mode).includes(param)) {
+      throw new ParseError(url);
     }
-    const mode = /** @type {cca.Mode} */ (param);
+    const mode = /** @type {Mode} */ (param);
 
-    return new cca.intent.Intent(
+    return new Intent(
         url, intentId, mode, getBool('shouldHandleResult'),
         getBool('shouldDownScale'), getBool('isSecure'));
   }
-};
+}
+
+/** @const */
+cca.intent.Intent = Intent;

chrome/browser/resources/chromeos/camera/src/js/namespace.js

@@ -10,6 +10,7 @@
 // eslint-disable-next-line no-unused-vars
 var cca = {
   device: {},
+  intent: {},
   mojo: {},
   nav: {},
   perf: {},

chrome/browser/resources/chromeos/camera/src/views/background.html

@@ -11,7 +11,7 @@
     <script type="module" src="../js/mojo/chrome_helper.js"></script>
     <script type="module" src="../js/type.js"></script>
     <script type="module" src="../js/perf.js"></script>
-    <script defer src="../js/intent.js"></script>
+    <script type="module" src="../js/intent.js"></script>
     <script defer src="../js/background_ops.js"></script>
     <script defer src="../js/background.js"></script>
   </head>

chrome/browser/resources/chromeos/camera/src/views/main.html

@@ -16,7 +16,7 @@
     <script type="module" src="../js/type.js"></script>
     <script type="module" src="../js/perf.js"></script>
     <script defer src="../js/metrics.js"></script>
-    <script defer src="../js/intent.js"></script>
+    <script type="module" src="../js/intent.js"></script>
     <script type="module" src="../js/util.js"></script>
     <script type="module" src="../js/toast.js"></script>
     <script type="module" src="../js/tooltip.js"></script>