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

ash/wm/workspace/workspace_cycler_configuration.cc

Index: ash/wm/workspace/workspace_cycler_configuration.cc
diff --git a/ash/wm/workspace/workspace_cycler_configuration.cc b/ash/wm/workspace/workspace_cycler_configuration.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8c5d1ae116447283a9ebc74aa0609dacbb00c8ec
--- /dev/null
+++ b/ash/wm/workspace/workspace_cycler_configuration.cc
@@ -0,0 +1,160 @@
+// Copyright (c) 2013 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.
+
+#include "ash/wm/workspace/workspace_cycler_configuration.h"
+
+#include "ash/ash_switches.h"
+#include "base/command_line.h"
+#include "base/logging.h"
+#include "base/values.h"
+
+namespace {
+
+ListValue* g_shallower_than_selected_y_offsets = NULL;
+ListValue* g_deeper_than_selected_y_offsets = NULL;
+double g_selected_y_offset = 40;
+double g_selected_scale = 0.95;
+double g_min_scale = 0.9;
+double g_max_scale = 1.0;
+double g_min_brightness = -0.4;
+double g_background_opacity = 0.8;
+double g_distance_to_initiate_cycling = 10;
+double g_scroll_amount_to_cycle_to_next_workspace = 10;
+double g_cycler_step_animation_duration_ratio = 10;
+double g_start_cycler_animation_duration = 100;
+double g_stop_cycler_animation_duration = 100;
+
+}  // namespace
+
+namespace ash {
+
+// static
+bool WorkspaceCyclerConfiguration::IsCyclerEnabled() {
+  return CommandLine::ForCurrentProcess()->HasSwitch(
+      ash::switches::kAshEnableWorkspaceScrubbing);
+}
+
+// static
+bool WorkspaceCyclerConfiguration::IsListProperty(Property property) {
+  return (property == SHALLOWER_THAN_SELECTED_Y_OFFSETS ||
+          property == DEEPER_THAN_SELECTED_Y_OFFSETS);
+}
+
+// static
+void WorkspaceCyclerConfiguration::SetListValue(Property property,
+                                                const ListValue& list_value) {
+  DCHECK(IsListProperty(property));
+  if (property == SHALLOWER_THAN_SELECTED_Y_OFFSETS)
+    g_shallower_than_selected_y_offsets = list_value.DeepCopy();
+  else if (property == DEEPER_THAN_SELECTED_Y_OFFSETS)
+    g_deeper_than_selected_y_offsets = list_value.DeepCopy();
+}
+
+// static
+void WorkspaceCyclerConfiguration::SetDouble(Property property, double value) {
+  switch (property) {
+    case SHALLOWER_THAN_SELECTED_Y_OFFSETS:
+    case DEEPER_THAN_SELECTED_Y_OFFSETS:
+      NOTREACHED();
+      break;
+    case SELECTED_Y_OFFSET:
+      g_selected_y_offset = value;
+      break;
+    case SELECTED_SCALE:
+      g_selected_scale = value;
+      break;
+    case MIN_SCALE:
+      g_min_scale = value;
+      break;
+    case MAX_SCALE:
+      g_max_scale = value;
+      break;
+    case MIN_BRIGHTNESS:
+      g_min_brightness = value;
+      break;
+    case BACKGROUND_OPACITY:
+      g_background_opacity = value;
+      break;
+    case DISTANCE_TO_INITIATE_CYCLING:
+      g_distance_to_initiate_cycling = value;
+      break;
+    case SCROLL_DISTANCE_TO_CYCLE_TO_NEXT_WORKSPACE:
+      g_scroll_amount_to_cycle_to_next_workspace = value;
+      break;
+    case CYCLER_STEP_ANIMATION_DURATION_RATIO:
+      g_cycler_step_animation_duration_ratio = value;
+      break;
+    case START_CYCLER_ANIMATION_DURATION:
+      g_start_cycler_animation_duration = value;
+      break;
+    case STOP_CYCLER_ANIMATION_DURATION:
+      g_stop_cycler_animation_duration = value;
+      break;
+  }
+}
+
+// static
+const ListValue& WorkspaceCyclerConfiguration::GetListValue(Property property) {
+  DCHECK(IsListProperty(property));
+  if (property == SHALLOWER_THAN_SELECTED_Y_OFFSETS) {
+    if (!g_shallower_than_selected_y_offsets) {
+      // First time the property is accessed. Initialize it to the default
+      // value.
+      g_shallower_than_selected_y_offsets = new base::ListValue();
+      g_shallower_than_selected_y_offsets->AppendDouble(-40);
+      g_shallower_than_selected_y_offsets->AppendDouble(-32);
+      g_shallower_than_selected_y_offsets->AppendDouble(-20);
+    }
+    return *g_shallower_than_selected_y_offsets;
+  } else if (property == DEEPER_THAN_SELECTED_Y_OFFSETS) {
+    if (!g_deeper_than_selected_y_offsets) {
+      // First time the property is accessed. Initialize it to the default
+      // value.
+      g_deeper_than_selected_y_offsets = new base::ListValue();
+      g_deeper_than_selected_y_offsets->AppendDouble(28);
+      g_deeper_than_selected_y_offsets->AppendDouble(20);
+    }
+    return *g_deeper_than_selected_y_offsets;
+  }
+
+  NOTREACHED();
+  CR_DEFINE_STATIC_LOCAL(base::ListValue, default_return_value, ());
+  return default_return_value;
+}
+
+// static
+double WorkspaceCyclerConfiguration::GetDouble(Property property) {
+  switch (property) {
+    case SHALLOWER_THAN_SELECTED_Y_OFFSETS:
+    case DEEPER_THAN_SELECTED_Y_OFFSETS:
+      NOTREACHED();
+      return 0;
+    case SELECTED_Y_OFFSET:
+      return g_selected_y_offset;
+    case SELECTED_SCALE:
+      return g_selected_scale;
+    case MIN_SCALE:
+      return g_min_scale;
+    case MAX_SCALE:
+      return g_max_scale;
+    case MIN_BRIGHTNESS:
+      return g_min_brightness;
+    case BACKGROUND_OPACITY:
+      return g_background_opacity;
+    case DISTANCE_TO_INITIATE_CYCLING:
+      return g_distance_to_initiate_cycling;
+    case SCROLL_DISTANCE_TO_CYCLE_TO_NEXT_WORKSPACE:
+      return g_scroll_amount_to_cycle_to_next_workspace;
+    case CYCLER_STEP_ANIMATION_DURATION_RATIO:
+      return g_cycler_step_animation_duration_ratio;
+    case START_CYCLER_ANIMATION_DURATION:
+      return g_start_cycler_animation_duration;
+    case STOP_CYCLER_ANIMATION_DURATION:
+      return g_stop_cycler_animation_duration;
+  }
+  NOTREACHED();
+  return 0;
+}
+
+}  // namespace ash