feat: Add delete button to kontext manual captioning UI (#3354)

This commit adds the ability to delete a pair of images and their corresponding caption file from the kontext manual captioning tool.

A "Delete" button has been added to the UI for each image pair. When clicked, this button triggers the deletion of the control image, the target image, and the caption file. The UI is then refreshed to reflect the changes.

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>

Author: bmaltais

kohya_gui/kontext_manual_caption_gui.py

@@ -87,6 +87,37 @@ def save_caption(caption, caption_ext, image_file, images_dir):
     return gr.Markdown(visible=False)
 
 
+def delete_images_and_caption(
+    image_file, control_images_dir, target_images_dir, caption_ext
+):
+    if not image_file:
+        return gr.Markdown(visible=False)
+
+    # Delete control image
+    control_image_path = os.path.join(control_images_dir, image_file)
+    if os.path.exists(control_image_path):
+        os.remove(control_image_path)
+        log.info(f"Deleted control image: {control_image_path}")
+
+    # Delete target image
+    target_image_path = os.path.join(target_images_dir, image_file)
+    if os.path.exists(target_image_path):
+        os.remove(target_image_path)
+        log.info(f"Deleted target image: {target_image_path}")
+
+    # Delete caption file
+    caption_path = _get_caption_path(
+        image_file, target_images_dir, caption_ext
+    )
+    if caption_path and os.path.exists(caption_path):
+        os.remove(caption_path)
+        log.info(f"Deleted caption file: {caption_path}")
+
+    return gr.Markdown(
+        f"🗑️ Deleted files for `{image_file}`", visible=True
+    )
+
+
 def update_quick_tags(quick_tags_text, *image_caption_texts):
     quick_tags, quick_tags_set = _get_quick_tags(quick_tags_text)
     return [
@@ -374,7 +405,7 @@ def render_pagination_with_logic(page, max_page):
 
         pagination_row1, page_count1 = render_pagination_with_logic(page, max_page)
 
-        image_rows, image_files, target_image_images, control_image_images, image_caption_texts, image_tag_checks, save_buttons = [], [], [], [], [], [], []
+        image_rows, image_files, target_image_images, control_image_images, image_caption_texts, image_tag_checks, save_buttons, delete_buttons = [], [], [], [], [], [], [], []
         for i in range(IMAGES_TO_SHOW):
             with gr.Row(visible=False) as row:
                 image_file = gr.Text(visible=False)
@@ -387,13 +418,42 @@ def render_pagination_with_logic(page, max_page):
                     tag_checkboxes = gr.CheckboxGroup([], label="Tags", interactive=True)
                 with gr.Column(min_width=40):
                     save_button = gr.Button("💾", elem_id="save_button", visible=False)
+                    delete_button = gr.Button("🗑️", elem_id="delete_button")
 
                 image_rows.append(row); image_files.append(image_file); control_image_images.append(control_image_image); target_image_images.append(target_image_image)
-                image_caption_texts.append(image_caption_text); image_tag_checks.append(tag_checkboxes); save_buttons.append(save_button)
+                image_caption_texts.append(image_caption_text); image_tag_checks.append(tag_checkboxes); save_buttons.append(save_button); delete_buttons.append(delete_button)
 
                 image_caption_text.input(update_image_caption, inputs=[quick_tags_text, image_caption_text, image_file, loaded_images_dir, caption_ext, auto_save], outputs=tag_checkboxes)
                 tag_checkboxes.input(update_image_tags, inputs=[quick_tags_text, tag_checkboxes, image_file, loaded_images_dir, caption_ext, auto_save], outputs=[image_caption_text])
                 save_button.click(save_caption, inputs=[image_caption_text, caption_ext, image_file, loaded_images_dir], outputs=info_box)
+                delete_button.click(
+                    delete_images_and_caption,
+                    inputs=[
+                        image_file,
+                        loaded_control_images_dir,
+                        loaded_images_dir,
+                        caption_ext,
+                    ],
+                    outputs=info_box,
+                ).then(
+                    load_images,
+                    inputs=[
+                        loaded_images_dir,
+                        loaded_control_images_dir,
+                        caption_ext,
+                        quick_tags_text,
+                        ignore_load_tags_word_count,
+                    ],
+                    outputs=[
+                        image_files_state,
+                        loaded_images_dir,
+                        loaded_control_images_dir,
+                        page,
+                        max_page,
+                        info_box,
+                        quick_tags_text,
+                    ],
+                )
 
         pagination_row2, page_count2 = render_pagination_with_logic(page, max_page)