Added an extension for opening a symlink's parent directory

examples/open-symlinks-parent-dirs.py

@@ -0,0 +1,44 @@
+import os
+import os.path
+import subprocess
+import urllib
+
+from gi.repository import Caja, GObject, Gio
+
+
+class OpenSymLinksParentDirsExtension(Caja.MenuProvider, GObject.GObject):
+    def __init__(self):
+        pass
+
+    def _open_parent_dir(self, files_or_directories):
+        args = ['caja']
+        for f in files_or_directories:
+            # find the real location of the file (resolves all symlinks)
+            path = os.path.realpath(f.get_location().get_path())
+            parent = os.path.abspath(os.path.join(path, os.pardir))
+            args.append(parent)
+        subprocess.Popen(args)
+
+    def menu_activate_cb(self, menu, files):
+        self._open_parent_dir(files)
+
+    def get_file_items(self, window, files):
+        num_files = len(files)
+        if num_files == 0 or any(not self.is_symbolic_link(f) for f in files):
+            return
+
+        if num_files == 1:
+            lbl = "Open Link's Parent Directory"
+        else:
+            lbl = "Open Links' Parent Directories"
+
+        item = Caja.MenuItem(name='CajaPython::open_symlink_parent_dirs_item',
+                                 label=lbl,
+                                 tip=lbl)
+        item.connect('activate', self.menu_activate_cb, files)
+        return item,
+
+    def is_symbolic_link(self, f):
+        f_type = f.get_location().query_file_type(Gio.FileQueryInfoFlags.NOFOLLOW_SYMLINKS)
+        return f_type is Gio.FileType.SYMBOLIC_LINK
+