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// Copyright (c) 2011 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/browser/chromeos/system/touchpad_settings.h"
#include "base/bind.h"
#include "base/command_line.h"
#include "base/file_path.h"
#include "base/file_util.h"
#include "base/message_loop.h"
#include "base/process_util.h"
#include "base/stringprintf.h"
#include "chrome/browser/chromeos/system/runtime_environment.h"
#include "content/browser/browser_thread.h"
namespace chromeos {
namespace system {
namespace touchpad_settings {
namespace {
const char* kTpControl = "/opt/google/touchpad/tpcontrol";
bool TPCtrlExists() {
return file_util::PathExists(FilePath(kTpControl));
}
// Launches the tpcontrol command asynchronously, if it exists.
void LaunchTpControl(const std::vector<std::string>& argv) {
if (!TPCtrlExists())
return;
base::LaunchProcess(CommandLine(argv), base::LaunchOptions(), NULL);
}
} // namespace
bool TouchpadExists() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
static bool init = false;
static bool exists = false;
if (init)
return exists;
init = true;
if (!TPCtrlExists())
return exists;
std::vector<std::string> argv;
argv.push_back(kTpControl);
argv.push_back("status");
std::string output;
// On devices with no touchpad, output is empty.
exists = base::GetAppOutput(CommandLine(argv), &output) && !output.empty();
return exists;
}
void SetSensitivity(int value) {
// Run this on the FILE thread.
if (!BrowserThread::CurrentlyOn(BrowserThread::FILE)) {
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
base::Bind(&SetSensitivity, value));
return;
}
std::vector<std::string> argv;
argv.push_back(kTpControl);
argv.push_back("sensitivity");
argv.push_back(StringPrintf("%d", value));
LaunchTpControl(argv);
}
void SetTapToClick(bool enabled) {
// Run this on the FILE thread.
if (!BrowserThread::CurrentlyOn(BrowserThread::FILE)) {
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
base::Bind(&SetTapToClick, enabled));
return;
}
std::vector<std::string> argv;
argv.push_back(kTpControl);
argv.push_back("taptoclick");
argv.push_back(enabled ? "on" : "off");
LaunchTpControl(argv);
}
} // namespace touchpad_settings
} // namespace system
} // namespace chromeos
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