ui/events.py

import gradio as gr
import yaml
import os
import shutil
from functools import lru_cache
from core.settings import *
from utils.app_utils import *
from core.generation_logic import *
from comfy_integration.nodes import SAMPLER_CHOICES, SCHEDULER_CHOICES

from utils.app_utils import save_uploaded_file_with_hash
from ui.shared.ui_components import RESOLUTION_MAP, MAX_EMBEDDINGS, MAX_CONDITIONINGS, MAX_LORAS


def attach_event_handlers(ui_components, demo):
    def create_lora_event_handlers(prefix):
        lora_rows = ui_components[f'lora_rows_{prefix}']
        lora_ids = ui_components[f'lora_ids_{prefix}']
        lora_scales = ui_components[f'lora_scales_{prefix}']
        lora_uploads = ui_components[f'lora_uploads_{prefix}']
        count_state = ui_components[f'lora_count_state_{prefix}']
        add_button = ui_components[f'add_lora_button_{prefix}']
        del_button = ui_components[f'delete_lora_button_{prefix}']

        def add_lora_row(c):
            updates = {}
            if c < MAX_LORAS:
                c += 1
                updates[lora_rows[c - 1]] = gr.update(visible=True)
            
            updates[count_state] = c
            updates[add_button] = gr.update(visible=c < MAX_LORAS)
            updates[del_button] = gr.update(visible=c > 1)
            return updates

        def del_lora_row(c):
            updates = {}
            if c > 1:
                updates[lora_rows[c - 1]] = gr.update(visible=False)
                updates[lora_ids[c - 1]] = ""
                updates[lora_scales[c - 1]] = 0.0
                updates[lora_uploads[c - 1]] = None
                c -= 1

            updates[count_state] = c
            updates[add_button] = gr.update(visible=True)
            updates[del_button] = gr.update(visible=c > 1)
            return updates
        
        add_outputs = [count_state, add_button, del_button] + lora_rows
        del_outputs = [count_state, add_button, del_button] + lora_rows + lora_ids + lora_scales + lora_uploads

        add_button.click(add_lora_row, [count_state], add_outputs, show_progress=False)
        del_button.click(del_lora_row, [count_state], del_outputs, show_progress=False)
        
    def create_embedding_event_handlers(prefix):
        rows = ui_components[f'embedding_rows_{prefix}']
        ids = ui_components[f'embeddings_ids_{prefix}']
        files = ui_components[f'embeddings_files_{prefix}']
        count_state = ui_components[f'embedding_count_state_{prefix}']
        add_button = ui_components[f'add_embedding_button_{prefix}']
        del_button = ui_components[f'delete_embedding_button_{prefix}']

        def add_row(c):
            c += 1
            return {
                count_state: c,
                rows[c - 1]: gr.update(visible=True),
                add_button: gr.update(visible=c < MAX_EMBEDDINGS),
                del_button: gr.update(visible=True)
            }

        def del_row(c):
            c -= 1
            return {
                count_state: c,
                rows[c]: gr.update(visible=False),
                ids[c]: "",
                files[c]: None,
                add_button: gr.update(visible=True),
                del_button: gr.update(visible=c > 0)
            }
        
        add_outputs = [count_state, add_button, del_button] + rows
        del_outputs = [count_state, add_button, del_button] + rows + ids + files
        add_button.click(fn=add_row, inputs=[count_state], outputs=add_outputs, show_progress=False)
        del_button.click(fn=del_row, inputs=[count_state], outputs=del_outputs, show_progress=False)
    
    def create_conditioning_event_handlers(prefix):
        rows = ui_components[f'conditioning_rows_{prefix}']
        prompts = ui_components[f'conditioning_prompts_{prefix}']
        count_state = ui_components[f'conditioning_count_state_{prefix}']
        add_button = ui_components[f'add_conditioning_button_{prefix}']
        del_button = ui_components[f'delete_conditioning_button_{prefix}']
        
        def add_row(c):
            c += 1
            return {
                count_state: c,
                rows[c - 1]: gr.update(visible=True),
                add_button: gr.update(visible=c < MAX_CONDITIONINGS),
                del_button: gr.update(visible=True),
            }

        def del_row(c):
            c -= 1
            return {
                count_state: c,
                rows[c]: gr.update(visible=False),
                prompts[c]: "",
                add_button: gr.update(visible=True),
                del_button: gr.update(visible=c > 0),
            }

        add_outputs = [count_state, add_button, del_button] + rows
        del_outputs = [count_state, add_button, del_button] + rows + prompts
        add_button.click(fn=add_row, inputs=[count_state], outputs=add_outputs, show_progress=False)
        del_button.click(fn=del_row, inputs=[count_state], outputs=del_outputs, show_progress=False)
    
    def on_vae_upload(file_obj):
        if not file_obj:
            return gr.update(), gr.update(), None
        
        hashed_filename = save_uploaded_file_with_hash(file_obj, VAE_DIR)
        return hashed_filename, "File", file_obj
    
    def on_lora_upload(file_obj):
        if not file_obj:
            return gr.update(), gr.update()
        
        hashed_filename = save_uploaded_file_with_hash(file_obj, LORA_DIR)
        return hashed_filename, "File"

    def on_embedding_upload(file_obj):
        if not file_obj:
            return gr.update(), gr.update(), None
        
        hashed_filename = save_uploaded_file_with_hash(file_obj, EMBEDDING_DIR)
        return hashed_filename, "File", file_obj


    def create_run_event(prefix: str, task_type: str):
        run_inputs_map = {
            'model_display_name': ui_components[f'base_model_{prefix}'],
            'positive_prompt': ui_components[f'prompt_{prefix}'],
            'negative_prompt': ui_components[f'neg_prompt_{prefix}'],
            'seed': ui_components[f'seed_{prefix}'],
            'batch_size': ui_components[f'batch_size_{prefix}'],
            'guidance_scale': ui_components[f'cfg_{prefix}'],
            'num_inference_steps': ui_components[f'steps_{prefix}'],
            'sampler': ui_components[f'sampler_{prefix}'],
            'scheduler': ui_components[f'scheduler_{prefix}'],
            'zero_gpu_duration': ui_components[f'zero_gpu_{prefix}'],
            'civitai_api_key': ui_components.get(f'civitai_api_key_{prefix}'),
            'clip_skip': ui_components[f'clip_skip_{prefix}'],
            'task_type': gr.State(task_type)
        }
        
        if task_type not in ['img2img', 'inpaint']:
            run_inputs_map.update({'width': ui_components[f'width_{prefix}'], 'height': ui_components[f'height_{prefix}']})
        
        task_specific_map = {
            'img2img': {'img2img_image': f'input_image_{prefix}', 'img2img_denoise': f'denoise_{prefix}'},
            'inpaint': {'inpaint_image_dict': f'input_image_dict_{prefix}'},
            'outpaint': {'outpaint_image': f'input_image_{prefix}', 'outpaint_left': f'outpaint_left_{prefix}', 'outpaint_top': f'outpaint_top_{prefix}', 'outpaint_right': f'outpaint_right_{prefix}', 'outpaint_bottom': f'outpaint_bottom_{prefix}'},
            'hires_fix': {'hires_image': f'input_image_{prefix}', 'hires_upscaler': f'hires_upscaler_{prefix}', 'hires_scale_by': f'hires_scale_by_{prefix}', 'hires_denoise': f'denoise_{prefix}'}
        }
        if task_type in task_specific_map:
            for key, comp_name in task_specific_map[task_type].items():
                run_inputs_map[key] = ui_components[comp_name]
        
        lora_data_components = ui_components.get(f'all_lora_components_flat_{prefix}', [])
        embedding_data_components = ui_components.get(f'all_embedding_components_flat_{prefix}', [])
        conditioning_data_components = ui_components.get(f'all_conditioning_components_flat_{prefix}', [])
        
        run_inputs_map['vae_source'] = ui_components.get(f'vae_source_{prefix}')
        run_inputs_map['vae_id'] = ui_components.get(f'vae_id_{prefix}')
        run_inputs_map['vae_file'] = ui_components.get(f'vae_file_{prefix}')

        input_keys = list(run_inputs_map.keys())
        input_list_flat = [v for v in run_inputs_map.values() if v is not None]
        input_list_flat += lora_data_components + embedding_data_components + conditioning_data_components

        def create_ui_inputs_dict(*args):
            valid_keys = [k for k in input_keys if run_inputs_map[k] is not None]
            ui_dict = dict(zip(valid_keys, args[:len(valid_keys)]))
            arg_idx = len(valid_keys)
            
            ui_dict['lora_data'] = list(args[arg_idx : arg_idx + len(lora_data_components)])
            arg_idx += len(lora_data_components)
            ui_dict['embedding_data'] = list(args[arg_idx : arg_idx + len(embedding_data_components)])
            arg_idx += len(embedding_data_components)
            ui_dict['conditioning_data'] = list(args[arg_idx : arg_idx + len(conditioning_data_components)])

            return ui_dict

        ui_components[f'run_{prefix}'].click(
            fn=lambda *args, progress=gr.Progress(track_tqdm=True): generate_image_wrapper(create_ui_inputs_dict(*args), progress),
            inputs=input_list_flat,
            outputs=[ui_components[f'result_{prefix}']]
        )

    newbie_input_keys = [k for k in ui_components if k.startswith('newbie_') or k.startswith('char')]
    newbie_input_components = [ui_components[k] for k in newbie_input_keys]

    def create_newbie_ui_inputs_dict(*args):
        return dict(zip(newbie_input_keys, args))

    if 'newbie_run_button' in ui_components:
        ui_components['newbie_run_button'].click(
            fn=lambda *args, progress=gr.Progress(track_tqdm=True): generate_xml_wrapper(create_newbie_ui_inputs_dict(*args), progress),
            inputs=newbie_input_components,
            outputs=[ui_components['newbie_status'], ui_components['newbie_xml_output']]
        )


    for prefix, task_type in [
        ("txt2img", "txt2img"), ("img2img", "img2img"), ("inpaint", "inpaint"),
        ("outpaint", "outpaint"), ("hires_fix", "hires_fix"),
    ]:
        if f'add_lora_button_{prefix}' in ui_components: 
            create_lora_event_handlers(prefix)
            lora_uploads = ui_components[f'lora_uploads_{prefix}']
            lora_ids = ui_components[f'lora_ids_{prefix}']
            lora_sources = ui_components[f'lora_sources_{prefix}']
            for i in range(MAX_LORAS):
                lora_uploads[i].upload(
                    fn=on_lora_upload,
                    inputs=[lora_uploads[i]],
                    outputs=[lora_ids[i], lora_sources[i]],
                    show_progress=False
                )
        if f'add_embedding_button_{prefix}' in ui_components: 
            create_embedding_event_handlers(prefix)
            if f'embeddings_uploads_{prefix}' in ui_components:
                emb_uploads = ui_components[f'embeddings_uploads_{prefix}']
                emb_ids = ui_components[f'embeddings_ids_{prefix}']
                emb_sources = ui_components[f'embeddings_sources_{prefix}']
                emb_files = ui_components[f'embeddings_files_{prefix}']
                for i in range(MAX_EMBEDDINGS):
                    emb_uploads[i].upload(
                        fn=on_embedding_upload,
                        inputs=[emb_uploads[i]],
                        outputs=[emb_ids[i], emb_sources[i], emb_files[i]],
                        show_progress=False
                    )
        if f'add_conditioning_button_{prefix}' in ui_components: create_conditioning_event_handlers(prefix)
        if f'vae_source_{prefix}' in ui_components:
            upload_button = ui_components.get(f'vae_upload_button_{prefix}')
            if upload_button:
                 upload_button.upload(
                    fn=on_vae_upload, 
                    inputs=[upload_button], 
                    outputs=[
                        ui_components[f'vae_id_{prefix}'], 
                        ui_components[f'vae_source_{prefix}'], 
                        ui_components[f'vae_file_{prefix}']
                    ]
                )

        create_run_event(prefix, task_type)

    def on_aspect_ratio_change(ratio_key, model_display_name):
        model_type = MODEL_TYPE_MAP.get(model_display_name, 'sdxl').lower()
        res_map = RESOLUTION_MAP.get(model_type, RESOLUTION_MAP.get("sdxl", {}))
        w, h = res_map.get(ratio_key, (1024, 1024))
        return w, h

    for prefix in ["txt2img", "img2img", "inpaint", "outpaint", "hires_fix"]:
        if f'aspect_ratio_{prefix}' in ui_components:
            aspect_ratio_dropdown = ui_components[f'aspect_ratio_{prefix}']
            width_component = ui_components[f'width_{prefix}']
            height_component = ui_components[f'height_{prefix}']
            model_dropdown = ui_components[f'base_model_{prefix}']
            aspect_ratio_dropdown.change(fn=on_aspect_ratio_change, inputs=[aspect_ratio_dropdown, model_dropdown], outputs=[width_component, height_component], show_progress=False)
            
    if 'view_mode_inpaint' in ui_components:
        def toggle_inpaint_fullscreen_view(view_mode):
            is_fullscreen = (view_mode == "Fullscreen View")
            other_elements_visible = not is_fullscreen
            editor_height = 800 if is_fullscreen else 272
            return {
                ui_components['model_and_run_row_inpaint']: gr.update(visible=other_elements_visible),
                ui_components['prompts_column_inpaint']: gr.update(visible=other_elements_visible),
                ui_components['params_and_gallery_row_inpaint']: gr.update(visible=other_elements_visible),
                ui_components['accordion_wrapper_inpaint']: gr.update(visible=other_elements_visible),
                ui_components['input_image_dict_inpaint']: gr.update(height=editor_height),
            }
        
        output_components = [
            ui_components['model_and_run_row_inpaint'], ui_components['prompts_column_inpaint'],
            ui_components['params_and_gallery_row_inpaint'], ui_components['accordion_wrapper_inpaint'],
            ui_components['input_image_dict_inpaint']
        ]
        ui_components['view_mode_inpaint'].change(fn=toggle_inpaint_fullscreen_view, inputs=[ui_components['view_mode_inpaint']], outputs=output_components, show_progress=False)

    def initialize_all_cn_dropdowns():
        return {}

    def run_on_load():
        return initialize_all_cn_dropdowns()
    
    all_load_outputs = []

    if all_load_outputs:
        demo.load(
            fn=run_on_load,
            outputs=all_load_outputs
        )