Install from disk image: Create persistent Dock icon

chrome/browser/mac/scoped_launch_data.h

+// 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.
+
+#ifndef CHROME_BROWSER_MAC_SCOPED_LAUNCH_DATA_H_
+#define CHROME_BROWSER_MAC_SCOPED_LAUNCH_DATA_H_
+#pragma once
+
+#include <launch.h>
+
+#include <algorithm>
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+
+namespace launchd {
+
+// Just like scoped_ptr<> but for launch_data_t.
+class ScopedLaunchData {
+ public:
+  typedef launch_data_t element_type;
+
+  explicit ScopedLaunchData(launch_data_t object = NULL)
+      : object_(object) {
+  }
+
+  ~ScopedLaunchData() {
+    if (object_)
+      launch_data_free(object_);
+  }
+
+  void reset(launch_data_t object = NULL) {
+    if (object != object_) {
+      if (object_)
+        launch_data_free(object_);
+      object_ = object;
+    }
+  }
+
+  bool operator==(launch_data_t that) const {
+    return object_ == that;
+  }
+
+  bool operator!=(launch_data_t that) const {
+    return object_ != that;
+  }
+
+  operator launch_data_t() const {
+    return object_;
+  }
+
+  launch_data_t get() const {
+    return object_;
+  }
+
+  void swap(ScopedLaunchData& that) {
+    std::swap(object_, that.object_);
+  }
+
+  launch_data_t release() WARN_UNUSED_RESULT {
+    launch_data_t temp = object_;
+    object_ = NULL;
+    return temp;
+  }
+
+ private:
+  launch_data_t object_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScopedLaunchData);
+};
+
+}  // namespace launchd
+
+#endif  // CHROME_BROWSER_MAC_SCOPED_LAUNCH_DATA_H_