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// Copyright 2014 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 "base/command_line.h"
#include "base/logging.h"
#include "base/trace_event/trace_event.h"
#include "ui/events/devices/device_data_manager.h"
#include "ui/ozone/platform_object.h"
#include "ui/ozone/platform_selection.h"
#include "ui/ozone/public/ozone_platform.h"
#include "ui/ozone/public/ozone_switches.h"
namespace ui {
namespace {
bool g_platform_initialized_ui = false;
bool g_platform_initialized_gpu = false;
}
OzonePlatform::OzonePlatform() {
DCHECK(!instance_) << "There should only be a single OzonePlatform.";
instance_ = this;
g_platform_initialized_ui = false;
g_platform_initialized_gpu = false;
}
OzonePlatform::~OzonePlatform() {
DCHECK_EQ(instance_, this);
instance_ = NULL;
}
// static
void OzonePlatform::InitializeForUI() {
CreateInstance();
if (g_platform_initialized_ui)
return;
g_platform_initialized_ui = true;
instance_->InitializeUI();
// This is deliberately created after initializing so that the platform can
// create its own version of DDM.
DeviceDataManager::CreateInstance();
}
// static
void OzonePlatform::InitializeForGPU() {
CreateInstance();
if (g_platform_initialized_gpu)
return;
g_platform_initialized_gpu = true;
instance_->InitializeGPU();
}
// static
OzonePlatform* OzonePlatform::GetInstance() {
DCHECK(instance_) << "OzonePlatform is not initialized";
return instance_;
}
// static
void OzonePlatform::CreateInstance() {
if (!instance_) {
TRACE_EVENT1("ozone",
"OzonePlatform::Initialize",
"platform",
GetOzonePlatformName());
scoped_ptr<OzonePlatform> platform =
PlatformObject<OzonePlatform>::Create();
// TODO(spang): Currently need to leak this object.
OzonePlatform* pl = platform.release();
DCHECK_EQ(instance_, pl);
}
}
// static
OzonePlatform* OzonePlatform::instance_;
} // namespace ui
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