Make the workspace cycler animation parameters editable via chrome://gesture

chrome/browser/resources/gesture_config.js

 // Copyright (c) 2012 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.
 
 // Redefine '$' here rather than including 'cr.js', since this is
 // the only function needed.  This allows this file to be loaded
 // in a browser directly for layout and some testing purposes.
 var $ = function(id) { return document.getElementById(id); };
 
 /**
@@ skipping 300 matching lines @@
       units: 'pixels'
     },
   ];
 
   return new GeneralConfig(OVERSCROLL_TITLE,
                            OVERSCROLL_PREFIX,
                            OVERSCROLL_FIELDS);
 }
 
 /**
+ * Returns a GeneralConfig for configuring workspace_cycler.* preferences.
+ * @return {object} A GeneralConfig object.
+ */
+function WorkspaceCyclerConfig() {
+  var WORKSPACE_CYCLER_TITLE = 'Workspace Cycler Configuration';
+
+  var WORKSPACE_CYCLER_PREFIX = 'workspace_cycler.';
+
+  var WORKSPACE_CYCLER_FIELDS = [
+    {
+      key: 'selected_scale',
+      label: 'Scale of the selected workspace',
+      units: '%'
+    },
+    {
+      key: 'min_scale',
+      label: 'Minimum workspace scale (scale of deepest workspace)',
+      units: '%'
+    },
+    {
+      key: 'max_scale',
+      label: 'Maximimum workspace scale (scale of shallowest workspace)',
+      units: '%'
+    },
+    {
+      key: 'min_brightness',
+      label: 'Minimum workspace brightness (deepest & shallowest workspace)',
+      units: '%'
+    },
+    {
+      key: 'background_opacity',
+      label: 'Desktop background opacity when cycling through workspaces',
+      units: '%'
+    },
+    {
+      key: 'distance_to_initiate_cycling',
+      label: 'Vertical distance to scroll to initiate cycling',
+      units: 'pixels'
+    },
+    {
+      key: 'scroll_distance_to_cycle_to_next_workspace',
+      label: 'Vertical distance to scroll to cycle to the next workspace',
+      units: 'pixels'
+    },
+    { key: 'cycler_step_animation_duration_ratio',
+      label: 'Cycler step animation duration ratio',
+      units: 'ms / pixels vertical scroll'
+    },
+    { key: 'start_cycler_animation_duration',
+      label: 'Duration of the animations to start cycling',
+      units: 'ms'
+    },
+    { key: 'stop_cycler_animation_duration',
+      label: 'Duration of the animations to stop cycling',
+      units: 'ms'
+    }
+  ];
+
+  return new GeneralConfig(WORKSPACE_CYCLER_TITLE,
+                           WORKSPACE_CYCLER_PREFIX,
+                           WORKSPACE_CYCLER_FIELDS);
+}
+
+/**
  * WebUI instance for configuring gesture.* and overscroll.* preference values
  * used by Chrome's gesture recognition system.
  */
 var gesture_config = (function() {
 
   /**
    * Build and initialize the gesture configuration form.
    */
   function initialize() {
     var g = GestureConfig();
     g.buildAll();
 
     var o = OverscrollConfig();
     o.buildAll();
 
+    // Asynchronously check whether the workspace cycler configuration should
+    // be added. If it should be, add it in the callback.
+    checkShouldAddWorkspaceCyclerConfiguration();
+

[sadrul, 2013/02/11 16:41:19]

This isn't necessary. Just add the config here. This isn't meant for end user,
so it can be a bit crude. (We do not do this for over scroll configs either)

     $('reset-button').onclick = function() {
       g.onReset();
       o.onReset();
     };
   }
 
   /**
+   * Asynchronously checks whether the workspace cycler configuration should
+   * be added to the form. If it should be, it is added to the form in the
+   * callback.
+   */
+  function checkShouldAddWorkspaceCyclerConfiguration() {
+    chrome.send('checkShouldAddWorkspaceCyclerConfiguration');
+  }
+
+  /**
    * Handle callback from call to getPreferenceValue.
    * @param {string} prefName The name of the requested preference value.
    * @param {value} value The current value associated with prefName.
    */
   function getPreferenceValueResult(prefName, value) {
     prefName = prefName.substring(prefName.indexOf('.') + 1);
     $(prefName).value = value;
   }
 
+  /**
+   * Handle callback from call to checkShouldAddWorkspaceCyclerConfiguration.
+   * @param {bool} should_add Whether the workspace cycler configuration should
+   *    be added to the form.
+   */
+  function checkShouldAddWorkspaceCyclerConfigurationResult(should_add) {
+    if (should_add) {
+      var c = WorkspaceCyclerConfig();
+      c.buildAll();
+    }
+  }
+
   return {
     initialize: initialize,
-    getPreferenceValueResult: getPreferenceValueResult
+    checkShouldAddWorkspaceCyclerConfiguration:
+        checkShouldAddWorkspaceCyclerConfiguration,
+    getPreferenceValueResult: getPreferenceValueResult,
+    checkShouldAddWorkspaceCyclerConfigurationResult:
+        checkShouldAddWorkspaceCyclerConfigurationResult
   };
 })();
 
 document.addEventListener('DOMContentLoaded', gesture_config.initialize);