# SPDX-License-Identifier: GPL-2.0-or-later

import bpy

from bpy.types import Header, Panel, Menu, UIList

from bpy_extras import (
    asset_utils,
)


class FILEBROWSER_HT_header(Header):
    bl_space_type = 'FILE_BROWSER'

    def draw_asset_browser_buttons(self, context):
        layout = self.layout

        space_data = context.space_data
        params = space_data.params

        layout.separator_spacer()

        if params.asset_library_ref != 'LOCAL':
            layout.prop(params, "import_type", text="")

        layout.separator_spacer()

        # Uses prop_with_popover() as popover() only adds the triangle icon in headers.
        layout.prop_with_popover(
            params,
            "display_type",
            panel="ASSETBROWSER_PT_display",
            text="",
            icon_only=True,
        )

        sub = layout.row()
        sub.ui_units_x = 8
        sub.prop(params, "filter_search", text="", icon='VIEWZOOM')

        layout.popover(
            panel="ASSETBROWSER_PT_filter",
            text="",
            icon='FILTER'
        )

        layout.operator(
            "screen.region_toggle",
            text="",
            icon='PREFERENCES',
            depress=is_option_region_visible(context, space_data)
        ).region_type = 'TOOL_PROPS'

    def draw(self, context):
        from bpy_extras.asset_utils import SpaceAssetInfo

        layout = self.layout

        space_data = context.space_data

        if space_data.active_operator is None:
            layout.template_header()

        if SpaceAssetInfo.is_asset_browser(space_data):
            ASSETBROWSER_MT_editor_menus.draw_collapsible(context, layout)
            layout.separator()
            self.draw_asset_browser_buttons(context)
        else:
            FILEBROWSER_MT_editor_menus.draw_collapsible(context, layout)
            layout.separator_spacer()

        if not context.screen.show_statusbar:
            layout.template_running_jobs()


class FileBrowserPanel:
    bl_space_type = 'FILE_BROWSER'

    @classmethod
    def poll(cls, context):
        space_data = context.space_data

        # can be None when save/reload with a file selector open
        if space_data.params is None:
            return False

        return space_data and space_data.type == 'FILE_BROWSER' and space_data.browse_mode == 'FILES'


class FILEBROWSER_PT_display(FileBrowserPanel, Panel):
    bl_region_type = 'HEADER'
    bl_label = "Display Settings"  # Shows as tooltip in popover
    bl_ui_units_x = 10

    def draw(self, context):
        layout = self.layout

        space = context.space_data
        params = space.params

        layout.use_property_split = True
        layout.use_property_decorate = False  # No animation.

        if params.display_type == 'THUMBNAIL':
            layout.prop(params, "display_size", text="Size")
        else:
            col = layout.column(heading="Columns", align=True)
            col.prop(params, "show_details_size", text="Size")
            col.prop(params, "show_details_datetime", text="Date")

        layout.prop(params, "recursion_level", text="Recursions")

        layout.column().prop(params, "sort_method", text="Sort By", expand=True)
        layout.prop(params, "use_sort_invert")


class FILEBROWSER_PT_filter(FileBrowserPanel, Panel):
    bl_region_type = 'HEADER'
    bl_label = "Filter Settings"  # Shows as tooltip in popover
    bl_ui_units_x = 10

    def draw(self, context):
        layout = self.layout

        space = context.space_data
        params = space.params
        is_lib_browser = params.use_library_browsing

        col = layout.column()
        col.active = params.use_filter

        row = col.row()
        row.label(icon='FILE_FOLDER')
        row.prop(params, "use_filter_folder", text="Folders", toggle=False)

        if params.filter_glob:
            col.label(text=params.filter_glob)
        else:
            row = col.row()
            row.label(icon='FILE_BLEND')
            row.prop(params, "use_filter_blender",
                     text=".blend Files", toggle=False)
            row = col.row()
            row.label(icon='FILE_BACKUP')
            row.prop(params, "use_filter_backup",
                     text="Backup .blend Files", toggle=False)
            row = col.row()
            row.label(icon='FILE_IMAGE')
            row.prop(params, "use_filter_image", text="Image Files", toggle=False)
            row = col.row()
            row.label(icon='FILE_MOVIE')
            row.prop(params, "use_filter_movie", text="Movie Files", toggle=False)
            row = col.row()
            row.label(icon='FILE_SCRIPT')
            row.prop(params, "use_filter_script",
                     text="Script Files", toggle=False)
            row = col.row()
            row.label(icon='FILE_FONT')
            row.prop(params, "use_filter_font", text="Font Files", toggle=False)
            row = col.row()
            row.label(icon='FILE_SOUND')
            row.prop(params, "use_filter_sound", text="Sound Files", toggle=False)
            row = col.row()
            row.label(icon='FILE_TEXT')
            row.prop(params, "use_filter_text", text="Text Files", toggle=False)
            row = col.row()
            row.label(icon='FILE_VOLUME')
            row.prop(params, "use_filter_volume", text="Volume Files", toggle=False)

        col.separator()

        if is_lib_browser:
            row = col.row()
            row.label(icon='BLANK1')  # Indentation
            row.prop(params, "use_filter_blendid",
                     text="Blender IDs", toggle=False)
            if params.use_filter_blendid:
                row = col.row()
                row.label(icon='BLANK1')  # Indentation

                sub = row.column(align=True)

                sub.prop(params, "use_filter_asset_only")

                filter_id = params.filter_id
                for identifier in dir(filter_id):
                    if identifier.startswith("category_"):
                        subrow = sub.row()
                        subrow.label(icon=filter_id.bl_rna.properties[identifier].icon)
                        subrow.prop(filter_id, identifier, toggle=False)

                col.separator()

        layout.prop(params, "show_hidden")


def panel_poll_is_upper_region(region):
    # The upper region is left-aligned, the lower is split into it then.
    # Note that after "Flip Regions" it's right-aligned.
    return region.alignment in {'LEFT', 'RIGHT'}


def panel_poll_is_asset_browsing(context):
    from bpy_extras.asset_utils import SpaceAssetInfo
    return SpaceAssetInfo.is_asset_browser_poll(context)


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

        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_value=icon)
            else:
                row.prop(direntry, "name", text="", emboss=False, icon_value=icon)

        elif self.layout_type == 'GRID':
            layout.alignment = 'CENTER'
            layout.prop(direntry, "path", text="")


class FILEBROWSER_PT_bookmarks_volumes(Panel):
    bl_space_type = 'FILE_BROWSER'
    bl_region_type = 'TOOLS'
    bl_category = "Bookmarks"
    bl_label = "Volumes"

    @classmethod
    def poll(cls, context):
        return panel_poll_is_upper_region(context.region) and not panel_poll_is_asset_browsing(context)

    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_bookmarks_system(Panel):
    bl_space_type = 'FILE_BROWSER'
    bl_region_type = 'TOOLS'
    bl_category = "Bookmarks"
    bl_label = "System"

    @classmethod
    def poll(cls, context):
        return (
            context.preferences.filepaths.show_system_bookmarks and
            panel_poll_is_upper_region(context.region) and
            not panel_poll_is_asset_browsing(context)
        )

    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_context_menu(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_favorites(FileBrowserPanel, Panel):
    bl_space_type = 'FILE_BROWSER'
    bl_region_type = 'TOOLS'
    bl_category = "Bookmarks"
    bl_label = "Bookmarks"

    @classmethod
    def poll(cls, context):
        return (
            panel_poll_is_upper_region(context.region) and
            not panel_poll_is_asset_browsing(context)
        )

    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_context_menu",
                     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_bookmarks_recents(Panel):
    bl_space_type = 'FILE_BROWSER'
    bl_region_type = 'TOOLS'
    bl_category = "Bookmarks"
    bl_label = "Recent"

    @classmethod
    def poll(cls, context):
        return (
            context.preferences.filepaths.show_recent_locations and
            panel_poll_is_upper_region(context.region) and
            not panel_poll_is_asset_browsing(context)
        )

    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 and
            context.space_data.params.use_library_browsing and
            panel_poll_is_upper_region(context.region) and
            not panel_poll_is_asset_browsing(context)
        )

    def draw(self, context):
        layout = self.layout
        space = context.space_data
        params = space.params

        layout.prop(params, "use_filter_blendid")
        if params.use_filter_blendid:
            layout.separator()
            col = layout.column(align=True)

            col.prop(params, "use_filter_asset_only")

            filter_id = params.filter_id
            for identifier in dir(filter_id):
                if identifier.startswith("filter_"):
                    row = col.row()
                    row.label(icon=filter_id.bl_rna.properties[identifier].icon)
                    row.prop(filter_id, identifier, toggle=False)


def is_option_region_visible(context, space):
    from bpy_extras.asset_utils import SpaceAssetInfo

    if SpaceAssetInfo.is_asset_browser(space):
        pass
    # For the File Browser, there must be an operator for there to be options
    # (irrelevant for the Asset Browser).
    elif not space.active_operator:
        return False

    for region in context.area.regions:
        if region.type == 'TOOL_PROPS' and region.width <= 1:
            return False

    return True


class FILEBROWSER_PT_directory_path(Panel):
    bl_space_type = 'FILE_BROWSER'
    bl_region_type = 'UI'
    bl_label = "Directory Path"
    bl_category = "Attributes"
    bl_options = {'HIDE_HEADER'}

    def is_header_visible(self, context):
        for region in context.area.regions:
            if region.type == 'HEADER' and region.height <= 1:
                return False

        return True

    @classmethod
    def poll(cls, context):
        return context.space_data.params

    def draw(self, context):
        layout = self.layout
        space = context.space_data
        params = space.params

        layout.scale_x = 1.3
        layout.scale_y = 1.3

        row = layout.row()
        flow = row.grid_flow(row_major=True, columns=0, even_columns=False, even_rows=False, align=False)

        subrow = flow.row()

        subsubrow = subrow.row(align=True)
        subsubrow.operator("file.previous", text="", icon='BACK')
        subsubrow.operator("file.next", text="", icon='FORWARD')
        subsubrow.operator("file.parent", text="", icon='FILE_PARENT')
        subsubrow.operator("file.refresh", text="", icon='FILE_REFRESH')

        subsubrow = subrow.row()
        subsubrow.operator_context = 'EXEC_DEFAULT'
        subsubrow.operator("file.directory_new", icon='NEWFOLDER', text="")

        subrow.template_file_select_path(params)

        subrow = flow.row()

        subsubrow = subrow.row()
        subsubrow.scale_x = 0.6
        subsubrow.prop(params, "filter_search", text="", icon='VIEWZOOM')

        subsubrow = subrow.row(align=True)
        subsubrow.prop(params, "display_type", expand=True, icon_only=True)
        subsubrow.popover("FILEBROWSER_PT_display", text="")

        subsubrow = subrow.row(align=True)
        subsubrow.prop(params, "use_filter", toggle=True, icon='FILTER', icon_only=True)
        subsubrow.popover("FILEBROWSER_PT_filter", text="")

        if space.active_operator:
            subrow.operator(
                "screen.region_toggle",
                text="",
                icon='PREFERENCES',
                depress=is_option_region_visible(context, space)
            ).region_type = 'TOOL_PROPS'


class FileBrowserMenu:
    @classmethod
    def poll(cls, context):
        space_data = context.space_data
        return space_data and space_data.type == 'FILE_BROWSER' and space_data.browse_mode == 'FILES'


class FILEBROWSER_MT_editor_menus(FileBrowserMenu, Menu):
    bl_idname = "FILEBROWSER_MT_editor_menus"
    bl_label = ""

    def draw(self, _context):
        layout = self.layout

        layout.menu("FILEBROWSER_MT_view")
        layout.menu("FILEBROWSER_MT_select")


class FILEBROWSER_MT_view(FileBrowserMenu, Menu):
    bl_label = "View"

    def draw(self, context):
        layout = self.layout
        st = context.space_data
        params = st.params

        layout.prop(st, "show_region_toolbar", text="Source List")
        layout.prop(st, "show_region_ui", text="File Path")
        layout.operator("file.view_selected")

        layout.separator()

        layout.prop_menu_enum(params, "display_size")
        layout.prop_menu_enum(params, "recursion_level")

        layout.separator()

        layout.menu("INFO_MT_area")


class FILEBROWSER_MT_select(FileBrowserMenu, Menu):
    bl_label = "Select"

    def draw(self, _context):
        layout = self.layout

        layout.operator("file.select_all", text="All").action = 'SELECT'
        layout.operator("file.select_all", text="None").action = 'DESELECT'
        layout.operator("file.select_all", text="Inverse").action = 'INVERT'

        layout.separator()

        layout.operator("file.select_box")


class FILEBROWSER_MT_context_menu(FileBrowserMenu, Menu):
    bl_label = "Files Context Menu"

    def draw(self, context):
        layout = self.layout
        st = context.space_data
        params = st.params

        layout.operator("file.previous", text="Back")
        layout.operator("file.next", text="Forward")
        layout.operator("file.parent", text="Go to Parent")
        layout.operator("file.refresh", text="Refresh")

        layout.separator()

        layout.operator("file.filenum", text="Increase Number",
                        icon='ADD').increment = 1
        layout.operator("file.filenum", text="Decrease Number",
                        icon='REMOVE').increment = -1

        layout.separator()

        layout.operator("file.rename", text="Rename")
        sub = layout.row()
        sub.operator_context = 'EXEC_DEFAULT'
        sub.operator("file.delete", text="Delete")

        layout.separator()

        sub = layout.row()
        sub.operator_context = 'EXEC_DEFAULT'
        sub.operator("file.directory_new", text="New Folder")
        layout.operator("file.bookmark_add", text="Add Bookmark")

        layout.separator()

        layout.prop_menu_enum(params, "display_type")
        if params.display_type == 'THUMBNAIL':
            layout.prop_menu_enum(params, "display_size")
        layout.prop_menu_enum(params, "recursion_level", text="Recursions")
        layout.prop_menu_enum(params, "sort_method")


class FILEBROWSER_MT_view_pie(Menu):
    bl_label = "View"
    bl_idname = "FILEBROWSER_MT_view_pie"

    def draw(self, context):
        layout = self.layout

        pie = layout.menu_pie()
        view = context.space_data

        pie.prop_enum(view.params, "display_type", value='LIST_VERTICAL')
        pie.prop_enum(view.params, "display_type", value='LIST_HORIZONTAL')
        pie.prop_enum(view.params, "display_type", value='THUMBNAIL')


class ASSETBROWSER_PT_display(asset_utils.AssetBrowserPanel, Panel):
    bl_region_type = 'HEADER'
    bl_label = "Display Settings"  # Shows as tooltip in popover
    bl_ui_units_x = 10

    def draw(self, context):
        layout = self.layout

        space = context.space_data
        params = space.params

        layout.use_property_split = True
        layout.use_property_decorate = False  # No animation.

        if params.display_type == 'THUMBNAIL':
            layout.prop(params, "display_size", text="Size")
        else:
            col = layout.column(heading="Columns", align=True)
            col.prop(params, "show_details_size", text="Size")
            col.prop(params, "show_details_datetime", text="Date")


class ASSETBROWSER_PT_filter(asset_utils.AssetBrowserPanel, Panel):
    bl_region_type = 'HEADER'
    bl_category = "Filter"
    bl_label = "Filter"

    def draw(self, context):
        layout = self.layout
        space = context.space_data
        params = space.params
        use_extended_browser = context.preferences.experimental.use_extended_asset_browser

        if params.use_filter_blendid:
            col = layout.column(align=True)

            filter_id = params.filter_asset_id
            for identifier in dir(filter_id):
                if (
                        identifier.startswith("filter_") or
                        (identifier.startswith("experimental_filter_") and use_extended_browser)
                ):
                    row = col.row()
                    row.label(icon=filter_id.bl_rna.properties[identifier].icon)
                    row.prop(filter_id, identifier, toggle=False)


class AssetBrowserMenu:
    @classmethod
    def poll(cls, context):
        from bpy_extras.asset_utils import SpaceAssetInfo
        return SpaceAssetInfo.is_asset_browser_poll(context)


class ASSETBROWSER_MT_editor_menus(AssetBrowserMenu, Menu):
    bl_idname = "ASSETBROWSER_MT_editor_menus"
    bl_label = ""

    def draw(self, _context):
        layout = self.layout

        layout.menu("ASSETBROWSER_MT_view")
        layout.menu("ASSETBROWSER_MT_select")
        layout.menu("ASSETBROWSER_MT_edit")


class ASSETBROWSER_MT_view(AssetBrowserMenu, Menu):
    bl_label = "View"

    def draw(self, context):
        layout = self.layout
        st = context.space_data
        params = st.params

        layout.prop(st, "show_region_toolbar", text="Source List")
        layout.prop(st, "show_region_tool_props", text="Asset Details")
        layout.operator("file.view_selected")

        layout.separator()

        layout.prop_menu_enum(params, "display_size")

        layout.separator()

        layout.menu("INFO_MT_area")


class ASSETBROWSER_MT_select(AssetBrowserMenu, Menu):
    bl_label = "Select"

    def draw(self, _context):
        layout = self.layout

        layout.operator("file.select_all", text="All").action = 'SELECT'
        layout.operator("file.select_all", text="None").action = 'DESELECT'
        layout.operator("file.select_all", text="Inverse").action = 'INVERT'

        layout.separator()

        layout.operator("file.select_box")


class ASSETBROWSER_MT_edit(AssetBrowserMenu, Menu):
    bl_label = "Edit"

    def draw(self, _context):
        layout = self.layout

        layout.operator("asset.catalog_undo", text="Undo")
        layout.operator("asset.catalog_redo", text="Redo")


class ASSETBROWSER_PT_metadata(asset_utils.AssetBrowserPanel, Panel):
    bl_region_type = 'TOOL_PROPS'
    bl_label = "Asset Metadata"
    bl_options = {'HIDE_HEADER'}

    def draw(self, context):
        layout = self.layout
        wm = context.window_manager
        asset_file_handle = context.asset_file_handle

        if asset_file_handle is None:
            layout.label(text="No active asset", icon='INFO')
            return

        prefs = context.preferences
        show_asset_debug_info = prefs.view.show_developer_ui and prefs.experimental.show_asset_debug_info
        is_local_asset = bool(asset_file_handle.local_id)

        layout.use_property_split = True
        layout.use_property_decorate = False  # No animation.

        if is_local_asset:
            # If the active file is an ID, use its name directly so renaming is possible from right here.
            layout.prop(asset_file_handle.local_id, "name")

            if show_asset_debug_info:
                col = layout.column(align=True)
                col.label(text="Asset Catalog:")
                col.prop(asset_file_handle.local_id.asset_data, "catalog_id", text="UUID")
                col.prop(asset_file_handle.local_id.asset_data, "catalog_simple_name", text="Simple Name")
        else:
            layout.prop(asset_file_handle, "name")

            if show_asset_debug_info:
                col = layout.column(align=True)
                col.enabled = False
                col.label(text="Asset Catalog:")
                col.prop(asset_file_handle.asset_data, "catalog_id", text="UUID")
                col.prop(asset_file_handle.asset_data, "catalog_simple_name", text="Simple Name")

        row = layout.row(align=True)
        row.prop(wm, "asset_path_dummy", text="Source", icon='CURRENT_FILE' if is_local_asset else 'NONE')
        row.operator("asset.open_containing_blend_file", text="", icon='TOOL_SETTINGS')

        layout.prop(asset_file_handle.asset_data, "description")
        layout.prop(asset_file_handle.asset_data, "author")


class ASSETBROWSER_PT_metadata_preview(asset_utils.AssetMetaDataPanel, Panel):
    bl_label = "Preview"

    def draw(self, context):
        layout = self.layout
        active_file = context.active_file

        row = layout.row()
        box = row.box()
        box.template_icon(icon_value=active_file.preview_icon_id, scale=5.0)

        col = row.column(align=True)
        col.operator("ed.lib_id_load_custom_preview", icon='FILEBROWSER', text="")
        col.separator()
        col.operator("ed.lib_id_generate_preview", icon='FILE_REFRESH', text="")
        col.menu("ASSETBROWSER_MT_metadata_preview_menu", icon='DOWNARROW_HLT', text="")


class ASSETBROWSER_MT_metadata_preview_menu(bpy.types.Menu):
    bl_label = "Preview"

    def draw(self, _context):
        layout = self.layout
        layout.operator("ed.lib_id_generate_preview_from_object", text="Render Active Object")


class ASSETBROWSER_PT_metadata_tags(asset_utils.AssetMetaDataPanel, Panel):
    bl_label = "Tags"

    def draw(self, context):
        layout = self.layout
        asset_data = asset_utils.SpaceAssetInfo.get_active_asset(context)

        row = layout.row()
        row.template_list("ASSETBROWSER_UL_metadata_tags", "asset_tags", asset_data, "tags",
                          asset_data, "active_tag", rows=4)

        col = row.column(align=True)
        col.operator("asset.tag_add", icon='ADD', text="")
        col.operator("asset.tag_remove", icon='REMOVE', text="")


class ASSETBROWSER_UL_metadata_tags(UIList):
    def draw_item(self, _context, layout, _data, item, icon, _active_data, _active_propname, _index):
        tag = item

        row = layout.row(align=True)
        # Non-editable entries would show grayed-out, which is bad in this specific case, so switch to mere label.
        if tag.is_property_readonly("name"):
            row.label(text=tag.name, icon_value=icon)
        else:
            row.prop(tag, "name", text="", emboss=False, icon_value=icon)


class ASSETBROWSER_MT_context_menu(AssetBrowserMenu, Menu):
    bl_label = "Assets Context Menu"

    def draw(self, context):
        layout = self.layout
        st = context.space_data
        params = st.params

        layout.operator("asset.library_refresh")

        layout.separator()

        sub = layout.column()
        sub.operator_context = 'EXEC_DEFAULT'
        sub.operator("asset.clear", text="Clear Asset").set_fake_user = False
        sub.operator("asset.clear", text="Clear Asset (Set Fake User)").set_fake_user = True

        layout.separator()

        layout.operator("asset.open_containing_blend_file")

        layout.separator()

        if params.display_type == 'THUMBNAIL':
            layout.prop_menu_enum(params, "display_size")


classes = (
    FILEBROWSER_HT_header,
    FILEBROWSER_PT_display,
    FILEBROWSER_PT_filter,
    FILEBROWSER_UL_dir,
    FILEBROWSER_PT_bookmarks_volumes,
    FILEBROWSER_PT_bookmarks_system,
    FILEBROWSER_MT_bookmarks_context_menu,
    FILEBROWSER_PT_bookmarks_favorites,
    FILEBROWSER_PT_bookmarks_recents,
    FILEBROWSER_PT_advanced_filter,
    FILEBROWSER_PT_directory_path,
    FILEBROWSER_MT_editor_menus,
    FILEBROWSER_MT_view,
    FILEBROWSER_MT_select,
    FILEBROWSER_MT_context_menu,
    FILEBROWSER_MT_view_pie,
    ASSETBROWSER_PT_display,
    ASSETBROWSER_PT_filter,
    ASSETBROWSER_MT_editor_menus,
    ASSETBROWSER_MT_view,
    ASSETBROWSER_MT_select,
    ASSETBROWSER_MT_edit,
    ASSETBROWSER_MT_metadata_preview_menu,
    ASSETBROWSER_PT_metadata,
    ASSETBROWSER_PT_metadata_preview,
    ASSETBROWSER_PT_metadata_tags,
    ASSETBROWSER_UL_metadata_tags,
    ASSETBROWSER_MT_context_menu,
)


def asset_path_str_get(_self):
    asset_file_handle = bpy.context.asset_file_handle
    if asset_file_handle is None:
        return ""

    if asset_file_handle.local_id:
        return "Current File"

    asset_library_ref = bpy.context.asset_library_ref
    return bpy.types.AssetHandle.get_full_library_path(asset_file_handle, asset_library_ref)


def register_props():
    from bpy.props import (
        StringProperty,
    )
    from bpy.types import (
        WindowManager,
    )

    # Just a dummy property to be able to show a string in a label button via
    # UILayout.prop().
    WindowManager.asset_path_dummy = StringProperty(
        name="Asset Blend Path",
        description="Full path to the Blender file containing the active asset",
        get=asset_path_str_get,
    )


if __name__ == "__main__":  # only for live edit.
    from bpy.utils import register_class

    for cls in classes:
        register_class(cls)