text: # ##### BEGIN GPL LICENSE BLOCK #####
  #
  #  This program is free software; you can redistribute it and/or
  #  modify it under the terms of the GNU General Public License
  #  as published by the Free Software Foundation; either version 2
  #  of the License, or (at your option) any later version.
  #
  #  This program is distributed in the hope that it will be useful,
  #  but WITHOUT ANY WARRANTY; without even the implied warranty of
  #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  #  GNU General Public License for more details.
  #
  #  You should have received a copy of the GNU General Public License
  #  along with this program; if not, write to the Free Software Foundation,
  #  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  #
  # ##### END GPL LICENSE BLOCK #####
  
  # <pep8 compliant>
  import bpy
  from bpy.types import Header, Panel, Menu, UIList
  
  
  class FILEBROWSER_HT_header(Header):
      bl_space_type = 'FILE_BROWSER'
  
      def draw(self, context):
          layout = self.layout
  
          st = context.space_data
          params = st.params
  
          if st.active_operator is None:
              layout.template_header()
  
          layout.menu("FILEBROWSER_MT_view")
  
          row = layout.row(align=True)
          row.operator("file.previous", text="", icon='BACK')
          row.operator("file.next", text="", icon='FORWARD')
          row.operator("file.parent", text="", icon='FILE_PARENT')
          row.operator("file.refresh", text="", icon='FILE_REFRESH')
  
          layout.operator_context = 'EXEC_DEFAULT'
          layout.operator("file.directory_new", icon='NEWFOLDER', text="")
  
          layout.operator_context = 'INVOKE_DEFAULT'
  
          # can be None when save/reload with a file selector open
          if params:
              is_lib_browser = params.use_library_browsing
  
              layout.prop(params, "display_type", expand=True, text="")
              layout.prop(params, "sort_method", expand=True, text="")
              layout.prop(params, "show_hidden", text="", icon='FILE_HIDDEN')
  
          layout.separator_spacer()
  
          layout.template_running_jobs()
  
          if params:
              layout.prop(params, "use_filter", text="", icon='FILTER')
  
              row = layout.row(align=True)
              row.active = params.use_filter
              row.prop(params, "use_filter_folder", text="")
  
              if params.filter_glob:
                  # if st.active_operator and hasattr(st.active_operator, "filter_glob"):
                  #     row.prop(params, "filter_glob", text="")
                  row.label(text=params.filter_glob)
              else:
                  row.prop(params, "use_filter_blender", text="")
                  row.prop(params, "use_filter_backup", text="")
                  row.prop(params, "use_filter_image", text="")
                  row.prop(params, "use_filter_movie", text="")
                  row.prop(params, "use_filter_script", text="")
                  row.prop(params, "use_filter_font", text="")
                  row.prop(params, "use_filter_sound", text="")
                  row.prop(params, "use_filter_text", text="")
  
              if is_lib_browser:
                  row.prop(params, "use_filter_blendid", text="")
                  if params.use_filter_blendid:
                      row.separator()
                      row.prop(params, "filter_id_category", text="")
  
              row.separator()
              row.prop(params, "filter_search", text="", icon='VIEWZOOM')
  
  
  class FILEBROWSER_UL_dir(UIList):
      def draw_item(self, context, layout, data, item, icon, active_data, active_propname, index):
          direntry = item
          # space = context.space_data
          icon = 'NONE'
          if active_propname == "system_folders_active":
              icon = 'DISK_DRIVE'
          if active_propname == "system_bookmarks_active":
              icon = 'BOOKMARKS'
          if active_propname == "bookmarks_active":
              icon = 'BOOKMARKS'
          if active_propname == "recent_folders_active":
              icon = 'FILE_FOLDER'
  
          if self.layout_type in {'DEFAULT', 'COMPACT'}:
              row = layout.row(align=True)
              row.enabled = direntry.is_valid
              # Non-editable entries would show grayed-out, which is bad in this specific case, so switch to mere label.
              if direntry.is_property_readonly("name"):
                  row.label(text=direntry.name, icon=icon)
              else:
                  row.prop(direntry, "name", text="", emboss=False, icon=icon)
  
          elif self.layout_type == 'GRID':
              layout.alignment = 'CENTER'
              layout.prop(direntry, "path", text="")
  
  
  class FILEBROWSER_PT_system_folders(Panel):
      bl_space_type = 'FILE_BROWSER'
      bl_region_type = 'TOOLS'
      bl_category = "Bookmarks"
      bl_label = "System"
  
      def draw(self, context):
          layout = self.layout
          space = context.space_data
  
          if space.system_folders:
              row = layout.row()
              row.template_list("FILEBROWSER_UL_dir", "system_folders", space, "system_folders",
                                space, "system_folders_active", item_dyntip_propname="path", rows=1, maxrows=10)
  
  
  class FILEBROWSER_PT_system_bookmarks(Panel):
      bl_space_type = 'FILE_BROWSER'
      bl_region_type = 'TOOLS'
      bl_category = "Bookmarks"
      bl_label = "System Bookmarks"
  
      @classmethod
      def poll(cls, context):
          return not context.preferences.filepaths.hide_system_bookmarks
  
      def draw(self, context):
          layout = self.layout
          space = context.space_data
  
          if space.system_bookmarks:
              row = layout.row()
              row.template_list("FILEBROWSER_UL_dir", "system_bookmarks", space, "system_bookmarks",
                                space, "system_bookmarks_active", item_dyntip_propname="path", rows=1, maxrows=10)
  
  
  class FILEBROWSER_MT_bookmarks_specials(Menu):
      bl_label = "Bookmarks Specials"
  
      def draw(self, context):
          layout = self.layout
          layout.operator("file.bookmark_cleanup", icon='X', text="Cleanup")
  
          layout.separator()
          layout.operator("file.bookmark_move", icon='TRIA_UP_BAR', text="Move To Top").direction = 'TOP'
          layout.operator("file.bookmark_move", icon='TRIA_DOWN_BAR', text="Move To Bottom").direction = 'BOTTOM'
  
  
  class FILEBROWSER_PT_bookmarks(Panel):
      bl_space_type = 'FILE_BROWSER'
      bl_region_type = 'TOOLS'
      bl_category = "Bookmarks"
      bl_label = "Bookmarks"
  
      def draw(self, context):
          layout = self.layout
          space = context.space_data
  
          if space.bookmarks:
              row = layout.row()
              num_rows = len(space.bookmarks)
              row.template_list("FILEBROWSER_UL_dir", "bookmarks", space, "bookmarks",
                                space, "bookmarks_active", item_dyntip_propname="path",
                                rows=(2 if num_rows < 2 else 4), maxrows=10)
  
              col = row.column(align=True)
              col.operator("file.bookmark_add", icon='ADD', text="")
              col.operator("file.bookmark_delete", icon='REMOVE', text="")
              col.menu("FILEBROWSER_MT_bookmarks_specials", icon='DOWNARROW_HLT', text="")
  
              if num_rows > 1:
                  col.separator()
                  col.operator("file.bookmark_move", icon='TRIA_UP', text="").direction = 'UP'
                  col.operator("file.bookmark_move", icon='TRIA_DOWN', text="").direction = 'DOWN'
          else:
              layout.operator("file.bookmark_add", icon='ADD')
  
  
  class FILEBROWSER_PT_recent_folders(Panel):
      bl_space_type = 'FILE_BROWSER'
      bl_region_type = 'TOOLS'
      bl_category = "Bookmarks"
      bl_label = "Recent"
  
      @classmethod
      def poll(cls, context):
          return not context.preferences.filepaths.hide_recent_locations
  
      def draw(self, context):
          layout = self.layout
          space = context.space_data
  
          if space.recent_folders:
              row = layout.row()
              row.template_list("FILEBROWSER_UL_dir", "recent_folders", space, "recent_folders",
                                space, "recent_folders_active", item_dyntip_propname="path", rows=1, maxrows=10)
  
              col = row.column(align=True)
              col.operator("file.reset_recent", icon='X', text="")
  
  
  class FILEBROWSER_PT_advanced_filter(Panel):
      bl_space_type = 'FILE_BROWSER'
      bl_region_type = 'TOOLS'
      bl_category = "Filter"
      bl_label = "Advanced Filter"
  
      @classmethod
      def poll(cls, context):
          # only useful in append/link (library) context currently...
          return context.space_data.params.use_library_browsing
  
      def draw(self, context):
          layout = self.layout
          space = context.space_data
          params = space.params
  
          if params and params.use_library_browsing:
              layout.prop(params, "use_filter_blendid")
              if params.use_filter_blendid:
                  layout.separator()
                  col = layout.column()
                  col.prop(params, "filter_id")
  
  
  class FILEBROWSER_MT_view(Menu):
      bl_label = "View"
  
      def draw(self, context):
          layout = self.layout
          st = context.space_data
          params = st.params
  
          layout.prop_menu_enum(params, "display_size")
          layout.prop_menu_enum(params, "recursion_level")
  
          layout.separator()
  
          layout.menu("INFO_MT_area")
  
  
  classes = (
      FILEBROWSER_HT_header,
      FILEBROWSER_UL_dir,
      FILEBROWSER_PT_system_folders,
      FILEBROWSER_PT_system_bookmarks,
      FILEBROWSER_MT_bookmarks_specials,
      FILEBROWSER_PT_bookmarks,
      FILEBROWSER_PT_recent_folders,
      FILEBROWSER_PT_advanced_filter,
      FILEBROWSER_MT_view,
  )
  
  if __name__ == "__main__":  # only for live edit.
      from bpy.utils import register_class
      for cls in classes:
          register_class(cls)
  