Add files to uilist

__init__.py

bl_info = {
    "name": "LoRA Browser",
    "blender": (2, 80, 0),
    "category": "Object",
}

import bpy
import os

# Custom property to store the list of files
class LORABrowserFileItem(bpy.types.PropertyGroup):
    name: bpy.props.StringProperty()
    enabled: bpy.props.BoolProperty(default=True)
    weight_value: bpy.props.FloatProperty(default=1.0)
    index: bpy.props.IntProperty(name="Index", default=0)


# Custom UIList
class LORABROWSER_UL_files(bpy.types.UIList):
    def draw_item(self, context, layout, data, item, icon, active_data, active_propname, index):
        row = layout.row(align=True)
        row.prop(item, "enabled", text="")
        split = row.split(factor=0.7)
        split.label(text=item.name)
        split.prop(item, "weight_value", text="", emboss=False)


# UI Panel
class LORABROWSER_PT_main_panel(bpy.types.Panel):
    bl_label = "LoRA Browser"
    bl_idname = "LORABROWSER_PT_main_panel"
    bl_space_type = 'SEQUENCE_EDITOR'
    bl_region_type = 'UI'
    bl_category = 'LoRA Browser'

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

        # Folder selection and refresh button
        row = layout.row(align=True)
        row.prop(scene, "lora_folder", text="Folder")
        row.operator("lora.refresh_files", text="", icon="FILE_REFRESH")

        # Custom UIList
        lora_files = scene.lora_files
        list_len = len(lora_files)

        if list_len > 0:
            layout.template_list("LORABROWSER_UL_files", "The_List", scene, "lora_files", scene, "lora_files_index")

        if list_len == 0:
            layout.label(text="No .safetensor files found in the selected folder.")

        # Button to print items
        layout.operator("lora.print_items", text="Print Items")

class LORA_OT_RefreshFiles(bpy.types.Operator):
    bl_idname = "lora.refresh_files"
    bl_label = "Refresh Files"

    def execute(self, context):
        scene = context.scene
        directory = scene.lora_folder

        if not directory:
            self.report({'ERROR'}, "No folder selected")
            return {'CANCELLED'}

        lora_files = scene.lora_files
        lora_files.clear()

        for filename in os.listdir(directory):
            if filename.endswith(".safetensors"):
                file_item = lora_files.add()
                file_item.name = filename.replace(".safetensors", "")
                file_item.enabled = True
                file_item.weight_value = 1.0
            else:
                print(filename)

        return {'FINISHED'}

class LORA_OT_PrintItems(bpy.types.Operator):
    bl_idname = "lora.print_items"
    bl_label = "Print Items"

    def execute(self, context):
        scene = context.scene
        lora_files = scene.lora_files

        for item in lora_files:
            print(f"Name: {item.name}, Enabled: {item.enabled}, Weight: {item.weight_value}")

        return {'FINISHED'}

# Register the classes
def register():
    bpy.utils.register_class(LORABrowserFileItem)
    bpy.utils.register_class(LORABROWSER_PT_main_panel)
    bpy.utils.register_class(LORA_OT_RefreshFiles)
    bpy.utils.register_class(LORABROWSER_UL_files)
    bpy.utils.register_class(LORA_OT_PrintItems)

    bpy.types.Scene.lora_files = bpy.props.CollectionProperty(type=LORABrowserFileItem)
    bpy.types.Scene.lora_files_index = bpy.props.IntProperty(name="Index", default=0)

    # Create a default folder value
    bpy.types.Scene.lora_folder = bpy.props.StringProperty(
        name="Folder",
        description="Select a folder",
        subtype='DIR_PATH',
        default="",  # Set a default folder value
        update=update_folder_callback,
    )

# Unregister the classes
def unregister():
    bpy.utils.unregister_class(LORABROWSER_PT_main_panel)
    bpy.utils.unregister_class(LORA_OT_RefreshFiles)
    bpy.utils.unregister_class(LORABrowserFileItem)
    bpy.utils.unregister_class(LORABROWSER_UL_files)
    bpy.utils.unregister_class(LORA_OT_PrintItems)

# Function to update the file list when the folder is changed
def update_folder_callback(self, context):
    if context.scene.lora_folder:
        bpy.ops.lora.refresh_files()

if __name__ == "__main__":
    register()