Linux: factor out some shared GTK tree utility code.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/160356

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@22019 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 64 insertions, 0 deletions

diff --git a/chrome/common/gtk_tree_util.cc b/chrome/common/gtk_tree_util.cc
new file mode 100644
index 0000000..bc4ed021
--- /dev/null
+++ b/chrome/common/gtk_tree_util.cc
@@ -0,0 +1,35 @@
+// 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/gtk_tree_util.h"
+
+#include "base/logging.h"
+
+// static
+gint GtkTreeUtil::GetRowNumForPath(GtkTreePath* path) {
+  gint* indices = gtk_tree_path_get_indices(path);
+  if (!indices) {
+    NOTREACHED();
+    return -1;
+  }
+  return indices[0];
+}
+
+// static
+gint GtkTreeUtil::GetRowNumForIter(GtkTreeModel* model, GtkTreeIter* iter) {
+  GtkTreePath* path = gtk_tree_model_get_path(model, iter);
+  int row = GetRowNumForPath(path);
+  gtk_tree_path_free(path);
+  return row;
+}
+
+// static
+gint GtkTreeUtil::GetTreeSortChildRowNumForPath(GtkTreeModel* sort_model,
+                                                GtkTreePath* sort_path) {
+  GtkTreePath *child_path = gtk_tree_model_sort_convert_path_to_child_path(
+      GTK_TREE_MODEL_SORT(sort_model), sort_path);
+  int row = GetRowNumForPath(child_path);
+  gtk_tree_path_free(child_path);
+  return row;
+}
diff --git a/chrome/common/gtk_tree_util.h b/chrome/common/gtk_tree_util.h
new file mode 100644
index 0000000..abd9ee6
--- /dev/null
+++ b/chrome/common/gtk_tree_util.h
@@ -0,0 +1,29 @@
+// 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.
+
+#ifndef CHROME_COMMON_GTK_TREE_UTIL_H_
+#define CHROME_COMMON_GTK_TREE_UTIL_H_
+
+#include <gtk/gtk.h>
+
+#include "base/basictypes.h"
+
+class GtkTreeUtil {
+ public:
+  // Get the row number corresponding to |path|.
+  static gint GetRowNumForPath(GtkTreePath* path);
+
+  // Get the row number corresponding to |iter|.
+  static gint GetRowNumForIter(GtkTreeModel* model, GtkTreeIter* iter);
+
+  // Get the row number in the child tree model corresponding to |sort_path| in
+  // the parent tree model.
+  static gint GetTreeSortChildRowNumForPath(GtkTreeModel* sort_model,
+                                            GtkTreePath* sort_path);
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(GtkTreeUtil);
+};
+
+#endif  // CHROME_COMMON_GTK_TREE_UTIL_H_