Add rendering support to the TestShell.

chrome/android/testshell/tab_manager.cc

Index: chrome/android/testshell/tab_manager.cc
diff --git a/chrome/android/testshell/tab_manager.cc b/chrome/android/testshell/tab_manager.cc
new file mode 100644
index 0000000000000000000000000000000000000000..cf3fc5d18638418ea5d150b95123ad8f099b015b
--- /dev/null
+++ b/chrome/android/testshell/tab_manager.cc
@@ -0,0 +1,112 @@
+// 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.
+
+#include "chrome/android/testshell/tab_manager.h"
+
+#include "base/logging.h"
+#include "base/android/jni_android.h"
+#include "base/android/jni_string.h"
+#include "base/android/scoped_java_ref.h"
+#include "base/bind.h"
+#include "base/lazy_instance.h"
+#include "chrome/browser/android/tab_base_android_impl.h"
+#include "content/public/browser/android/compositor.h"
+#include "content/public/browser/android/draw_delegate.h"
+#include "jni/TabManager_jni.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebLayer.h"
+
+#include <android/native_window_jni.h>
+
+using base::android::ScopedJavaLocalRef;
+
+namespace {
+
+struct GlobalState {
+  base::android::ScopedJavaGlobalRef<jobject> jobj_;
+  scoped_ptr<content::Compositor> compositor_;
+  scoped_ptr<WebKit::WebLayer> root_layer_;
+};
+
+base::LazyInstance<GlobalState> g_global_state = LAZY_INSTANCE_INITIALIZER;
+
+content::Compositor* GetCompositor() {
+  return g_global_state.Get().compositor_.get();
+}
+
+static void SurfacePresented(
+    const content::DrawDelegate::SurfacePresentedCallback& callback,
+    uint32 sync_point) {
+  callback.Run(sync_point);
+}
+
+static void SurfaceUpdated(
+    uint64 texture,
+    content::RenderWidgetHostView* view,
+    const content::DrawDelegate::SurfacePresentedCallback& callback) {
+  GetCompositor()->OnSurfaceUpdated(base::Bind(
+      &SurfacePresented, callback));
+}
+
+}  // anonymous namespace
+
+namespace chrome {
+
+// Register native methods
+bool RegisterTabManager(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+static void Init(JNIEnv* env, jclass clazz, jobject obj) {
+  g_global_state.Get().jobj_.Reset(env, obj);
+  content::DrawDelegate::GetInstance()->SetUpdateCallback(
+      base::Bind(&SurfaceUpdated));
+}
+
+static void SurfaceCreated(
+    JNIEnv* env, jclass clazz, jobject jsurface) {
+  ANativeWindow* native_window = ANativeWindow_fromSurface(env, jsurface);
+  if (!native_window)
+    return;
+
+  if (!GetCompositor()) {
+    content::Compositor::Initialize();
+    g_global_state.Get().compositor_.reset(content::Compositor::Create());
+    DCHECK(!g_global_state.Get().root_layer_.get());
+    g_global_state.Get().root_layer_.reset(WebKit::WebLayer::create());
+  }
+  GetCompositor()->SetWindowSurface(native_window);
+  ANativeWindow_release(native_window);
+  GetCompositor()->SetRootLayer(g_global_state.Get().root_layer_.get());
+}
+
+static void SurfaceDestroyed(JNIEnv* env, jclass clazz) {
+  GetCompositor()->SetWindowSurface(NULL);
+}
+
+static void SurfaceSetSize(
+    JNIEnv* env, jclass clazz, jint width, jint height) {
+  gfx::Size size = gfx::Size(width, height);
+  content::DrawDelegate::GetInstance()->SetBounds(size);
+  GetCompositor()->SetWindowBounds(size);
+}
+
+static void ShowTab(
+    JNIEnv* env, jclass clazz, jint jtab) {
+  TabBaseAndroidImpl* tab = reinterpret_cast<TabBaseAndroidImpl*>(jtab);
+  DCHECK(tab);
+  WebKit::WebLayer* layer = tab->tab_layer();
+  DCHECK(layer);
+  g_global_state.Get().root_layer_->addChild(layer);
+}
+
+static void HideTab(
+    JNIEnv* env, jclass clazz, jint jtab) {
+  TabBaseAndroidImpl* tab = reinterpret_cast<TabBaseAndroidImpl*>(jtab);
+  DCHECK(tab);
+  WebKit::WebLayer* layer = tab->tab_layer();
+  DCHECK(layer);
+  layer->removeFromParent();
+}
+
+}  // namespace chrome