Implement basic ShowItemInFolder for linux....

chrome/common/platform_util_win.cc

Index: chrome/common/platform_util_win.cc
===================================================================
--- chrome/common/platform_util_win.cc	(revision 0)
+++ chrome/common/platform_util_win.cc	(revision 0)
@@ -0,0 +1,78 @@
+// Copyright (c) 2009 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/common/platform_util.h"
+
+#include <atlbase.h>
+
+#include "base/file_path.h"
+#include "base/file_util.h"
+#include "base/logging.h"
+#include "chrome/common/win_util.h"
+
+namespace platform_util {
+
+void ShowItemInFolder(const FilePath& full_path) {
+  FilePath dir = full_path.DirName();
+  // ParseDisplayName will fail if the directory is "C:", it must be "C:\\".
+  if (dir.value() == L"" || !file_util::EnsureEndsWithSeparator(&dir))
+    return;
+
+  typedef HRESULT (WINAPI *SHOpenFolderAndSelectItemsFuncPtr)(
+      PCIDLIST_ABSOLUTE pidl_Folder,
+      UINT cidl,
+      PCUITEMID_CHILD_ARRAY pidls,
+      DWORD flags);
+
+  static SHOpenFolderAndSelectItemsFuncPtr open_folder_and_select_itemsPtr =
+    NULL;
+  static bool initialize_open_folder_proc = true;
+  if (initialize_open_folder_proc) {
+    initialize_open_folder_proc = false;
+    // The SHOpenFolderAndSelectItems API is exposed by shell32 version 6
+    // and does not exist in Win2K. We attempt to retrieve this function export
+    // from shell32 and if it does not exist, we just invoke ShellExecute to
+    // open the folder thus losing the functionality to select the item in
+    // the process.
+    HMODULE shell32_base = GetModuleHandle(L"shell32.dll");
+    if (!shell32_base) {
+      NOTREACHED();
+      return;
+    }
+    open_folder_and_select_itemsPtr =
+        reinterpret_cast<SHOpenFolderAndSelectItemsFuncPtr>
+            (GetProcAddress(shell32_base, "SHOpenFolderAndSelectItems"));
+  }
+  if (!open_folder_and_select_itemsPtr) {
+    ShellExecute(NULL, _T("open"), dir.value().c_str(), NULL, NULL, SW_SHOW);
+    return;
+  }
+
+  CComPtr<IShellFolder> desktop;
+  HRESULT hr = SHGetDesktopFolder(&desktop);
+  if (FAILED(hr))
+    return;
+
+  win_util::CoMemReleaser<ITEMIDLIST> dir_item;
+  hr = desktop->ParseDisplayName(NULL, NULL,
+                                 const_cast<wchar_t *>(dir.value().c_str()),
+                                 NULL, &dir_item, NULL);
+  if (FAILED(hr))
+    return;
+
+  win_util::CoMemReleaser<ITEMIDLIST> file_item;
+  hr = desktop->ParseDisplayName(NULL, NULL,
+      const_cast<wchar_t *>(full_path.value().c_str()),
+      NULL, &file_item, NULL);
+  if (FAILED(hr))
+    return;
+
+  const ITEMIDLIST* highlight[] = {
+    {file_item},
+  };
+  (*open_folder_and_select_itemsPtr)(dir_item, arraysize(highlight),
+                                     highlight, NULL);
+}
+
+}  // namespace platform_util