Port directory lister to posix.

net/base/directory_lister.h

 // Copyright (c) 2006-2008 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 NET_BASE_DIRECTORY_LISTER_H__
 #define NET_BASE_DIRECTORY_LISTER_H__
 
-#include <windows.h>
 #include <string>
 
+#include "base/file_util.h"
+#include "base/platform_thread.h"
 #include "base/ref_counted.h"
 
 class MessageLoop;
 
 namespace net {
 
 //
 // This class provides an API for listing the contents of a directory on the
 // filesystem asynchronously.  It spawns a background thread, and enumerates
 // the specified directory on that thread.  It marshalls WIN32_FIND_DATA
 // structs over to the main application thread.  The consumer of this class
 // is insulated from any of the multi-threading details.
 //
-class DirectoryLister : public base::RefCountedThreadSafe<DirectoryLister> {
+class DirectoryLister : public base::RefCountedThreadSafe<DirectoryLister>,
+                        public PlatformThread::Delegate {
  public:
   // Implement this class to receive directory entries.
-  class Delegate {
+  class DirectoryListerDelegate {
    public:
-    virtual void OnListFile(const WIN32_FIND_DATA& data) = 0;
+    virtual void OnListFile(
+        const file_util::FileEnumerator::FindInfo& data) = 0;
     virtual void OnListDone(int error) = 0;
   };
 
-  DirectoryLister(const std::wstring& dir, Delegate* delegate);
+  DirectoryLister(const std::wstring& dir, DirectoryListerDelegate* delegate);
   ~DirectoryLister();
 
   // Call this method to start the directory enumeration thread.
   bool Start();
 
   // Call this method to asynchronously stop directory enumeration.  The
   // delegate will receive the OnListDone notification with an error code of
   // ERROR_OPERATION_ABORTED.
   void Cancel();
 
   // The delegate pointer may be modified at any time.
-  Delegate* delegate() const { return delegate_; }
-  void set_delegate(Delegate* d) { delegate_ = d; }
+  DirectoryListerDelegate* delegate() const { return delegate_; }
+  void set_delegate(DirectoryListerDelegate* d) { delegate_ = d; }
 
   // Returns the directory being enumerated.
   const std::wstring& directory() const { return dir_; }
 
   // Returns true if the directory enumeration was canceled.
   bool was_canceled() const { return canceled_; }
 
+  // PlatformThread::Delegate implementation
+  void ThreadMain();
+
  private:
   friend class DirectoryDataEvent;
+  friend class ThreadDelegate;
 
-  void OnReceivedData(const WIN32_FIND_DATA* data, int count);
+  void OnReceivedData(const file_util::FileEnumerator::FindInfo* data,
+                      int count);
   void OnDone(int error);
 
-  static unsigned __stdcall ThreadFunc(void* param);
-
   std::wstring dir_;
-  Delegate* delegate_;
+  DirectoryListerDelegate* delegate_;
   MessageLoop* message_loop_;
-  HANDLE thread_;
+  PlatformThreadHandle thread_;
   bool canceled_;
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_DIRECTORY_LISTER_H__