[cros] Initial implementation for OOBE WebUI.

chrome/browser/resources/chromeos/oobe.js

+// Copyright (c) 2011 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.
+
+cr.define('cr.ui', function() {
+
+  function Oobe() {
+  }
+
+  cr.addSingletonGetter(Oobe);
+
+  // State of the screen.
+  Oobe.SCREEN_LOADING = -1;
+  Oobe.SCREEN_NONE =  0,
+  Oobe.SCREEN_WELCOME =  1,
+  Oobe.SCREEN_EULA    =  2;
+  Oobe.SCREEN_UPDATE  =  3;
+
+  Oobe.localStrings_ = new LocalStrings();
+
+  Oobe.prototype = {
+    initialized_: false,
+    state_: Oobe.SCREEN_LOADING,
+
+    changeState_: function(screenInfo) {
+      var newState = screenInfo.state;
+      this.hideAll_();
+      switch(newState) {
+        case Oobe.SCREEN_LOADING:
+          break;
+        case Oobe.SCREEN_NONE:
+          break;
+        case Oobe.SCREEN_WELCOME:
+          $('welcome-screen').hidden = false;
+          break;
+        case Oobe.SCREEN_EULA:
+          $('eula-screen').hidden = false;
+          break;
+        case Oobe.SCREEN_UPDATE:
+          break;
+      }
+      this.state_ = newState;
+    },
+
+    hideAll_: function() {
+      $('welcome-screen').hidden = true;
+      $('eula-screen').hidden = true;
+    },
+  };
+
+  Oobe.initialize = function() {
+    this.initialized_ = true;
+
+    $('continue').addEventListener('click', function(event) {
+      // TODO
+    });
+    $('back').addEventListener('click', function(event) {
+      // TODO
+    });
+    $('accept').addEventListener('click', function(event) {
+      // TODO
+    });
+    chrome.send('screenStateInitialize');
+  };
+
+  Oobe.screenStateChanged = function(screenInfo) {
+    Oobe.getInstance().changeState_(screenInfo);
+  };
+
+  // Export
+  return {
+    Oobe: Oobe
+  };
+
+});
+
+var Oobe = cr.ui.Oobe;
+
+document.addEventListener('DOMContentLoaded', cr.ui.Oobe.initialize);