Maintain global lists of animation controllers

cc/animation_registrar.cc

+// Copyright 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.
+
+#include "cc/animation_registrar.h"
+
+#include "base/stl_util.h"
+#include "cc/layer_animation_controller.h"
+
+namespace cc {
+
+namespace {
+
+static AnimationRegistrar::AnimationControllerSet*
+    s_active_main_thread_controllers = 0;
+static AnimationRegistrar::AnimationControllerSet*
+    s_main_thread_controllers = 0;
+static AnimationRegistrar::AnimationControllerSet*
+    s_active_compositor_thread_controllers = 0;
+static AnimationRegistrar::AnimationControllerSet*
+    s_compositor_thread_controllers = 0;
+
+AnimationRegistrar::AnimationControllerSet& getControllers(
+    AnimationRegistrar::ThreadName thread_name, bool just_active) {
+  AnimationRegistrar::AnimationControllerSet** controllers = 0;
+
+  if (just_active)
+      controllers = thread_name == AnimationRegistrar::MainThread
+          ? &s_main_thread_controllers
+          : &s_compositor_thread_controllers;
+  else
+      controllers = thread_name == AnimationRegistrar::MainThread
+          ? &s_active_main_thread_controllers
+          : &s_active_compositor_thread_controllers;
+
+  if (!*controllers)
+    *controllers = new AnimationRegistrar::AnimationControllerSet;
+
+  return **controllers;
+}
+
+}  // namespace
+
+// static.
+void AnimationRegistrar::Activate(
+    LayerAnimationController* controller,
+    AnimationRegistrar::ThreadName thread_name) {
+  getControllers(thread_name, true).insert(controller);
+}
+
+// static.
+void AnimationRegistrar::Deactivate(
+    LayerAnimationController* controller,
+    AnimationRegistrar::ThreadName thread_name) {
+  AnimationControllerSet& controllers = getControllers(thread_name, true);
+  if (ContainsKey(controllers, controller))
+    controllers.erase(controller);
+}
+
+// static.
+const AnimationRegistrar::AnimationControllerSet&
+AnimationRegistrar::GetActiveControllers(
+    AnimationRegistrar::ThreadName thread_name) {
+  return getControllers(thread_name, true);
+}
+
+// static.
+void AnimationRegistrar::Register(
+    LayerAnimationController* controller,
+    AnimationRegistrar::ThreadName thread_name) {
+  getControllers(thread_name, false).insert(controller);
+}
+
+// static.
+void AnimationRegistrar::Unregister(
+    LayerAnimationController* controller,
+    AnimationRegistrar::ThreadName thread_name) {
+  AnimationControllerSet& controllers = getControllers(thread_name, false);
+  if (ContainsKey(controllers, controller))
+    controllers.erase(controller);
+
+  // An unregistered controller cannot be active.
+  Deactivate(controller, thread_name);
+}
+
+// static.
+const AnimationRegistrar::AnimationControllerSet&
+AnimationRegistrar::GetAllControllers(
+    AnimationRegistrar::ThreadName thread_name) {
+  return getControllers(thread_name, false);
+}
+
+
+}  // namespace cc