[cros] Layout 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.
+
+/**
+ * @fileoverview Out of the box experience flow (OOBE).
+ * This is the main code for the OOBE WebUI implementation.
+ */
+
+const steps = ['connect', 'eula', 'update'];
+
+cr.define('cr.ui', function() {
+  /**
+  * Constructs an Out of box controller. It manages initialization of screens,
+  * transitions, error messages display.
+  *
+  * @constructor
+  */
+  function Oobe() {
+  }
+
+  cr.addSingletonGetter(Oobe);
+
+  Oobe.localStrings_ = new LocalStrings();
+
+  Oobe.prototype = {
+    /**
+     * Current OOBE step, index in the steps array.
+     * @type {number}
+     */
+    currentStep_: 0,
+
+    /**
+     * Switches to the next OOBE step.
+     * @param {number} nextStepIndex Index of the next step.
+     */
+    toggleStep_: function(nextStepIndex) {
+      var currentStepId = steps[this.currentStep_];
+      var nextStepId = steps[nextStepIndex];
+      var oldStep = $(currentStepId);
+      var oldHeader = $('header-' + currentStepId);
+      var newStep = $(nextStepId);
+      var newHeader = $('header-' + nextStepId);
+
+      newStep.classList.remove('hidden');
+
+      if (nextStepIndex > this.currentStep_) {
+        oldHeader.classList.add('left');
+        oldStep.classList.add('left');
+        newHeader.classList.remove('right');
+        newStep.classList.remove('right');
+      } else if (nextStepIndex < this.currentStep_) {
+        oldHeader.classList.add('right');
+        oldStep.classList.add('right');
+        newHeader.classList.remove('left');
+        newStep.classList.remove('left');
+      }
+
+      // Adjust inner container height based on new step's height.
+      $('inner-container').style.height = newStep.offsetHeight;
+
+      oldStep.addEventListener('webkitTransitionEnd', function f(e) {
+        oldStep.removeEventListener('webkitTransitionEnd', f);
+        oldStep.classList.add('hidden');
+      });
+      this.currentStep_ = nextStepIndex;
+      $('oobe').className = nextStepId;
+    },
+  };
+
+  /**
+   * Initializes the OOBE flow.  This will cause all C++ handlers to
+   * be invoked to do final setup.
+   */
+  Oobe.initialize = function() {
+    // Adjust inner container height based on first step's height
+    $('inner-container').style.height = $(steps[0]).offsetHeight;
+
+    $('continue-button').addEventListener('click', function(event) {
+      // TODO(nkostylev): Callback screen handler.
+      Oobe.toggleStep(1);
+    });
+    $('back-button').addEventListener('click', function(event) {
+      // TODO(nkostylev): Callback screen handler.
+      Oobe.toggleStep(0);
+    });
+    $('accept-button').addEventListener('click', function(event) {
+      // TODO(nkostylev): Callback screen handler.
+      Oobe.toggleStep(2);
+    });
+
+    chrome.send('screenStateInitialize');
+  };
+
+  /**
+   * Switches to the next OOBE step.
+   * @param {number} nextStepIndex Index of the next step.
+   */
+  Oobe.toggleStep = function(nextStepIndex) {
+    Oobe.getInstance().toggleStep_(nextStepIndex);
+  };
+
+  // Export
+  return {
+    Oobe: Oobe
+  };
+});
+
+var Oobe = cr.ui.Oobe;
+
+document.addEventListener('DOMContentLoaded', cr.ui.Oobe.initialize);