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import os
import shutil
import gradio as gr
from . import api, files
def setup_event_handlers(components: dict, disable_local_saving: bool = False):
"""Set up all event handlers for the UI components."""
def refresh_status():
try:
is_available, voices = api.check_api_status()
status = "Available" if is_available else "Waiting for Service..."
if is_available and voices:
# Preserve current voice selection if it exists and is still valid
current_voice = components["model"]["voice"].value
default_voice = current_voice if current_voice in voices else voices[0]
return [
gr.update(
value=f"🔄 TTS Service: {status}",
interactive=True,
variant="secondary",
),
gr.update(choices=voices, value=default_voice),
]
return [
gr.update(
value=f"⌛ TTS Service: {status}",
interactive=True,
variant="secondary",
),
gr.update(choices=[], value=None),
]
except Exception as e:
print(f"Error in refresh status: {str(e)}")
return [
gr.update(
value="❌ TTS Service: Connection Error",
interactive=True,
variant="secondary",
),
gr.update(choices=[], value=None),
]
def handle_file_select(filename):
if filename:
try:
text = files.read_text_file(filename)
if text:
preview = text[:200] + "..." if len(text) > 200 else text
return gr.update(value=preview)
except Exception as e:
print(f"Error reading file: {e}")
return gr.update(value="")
def handle_file_upload(file):
if file is None:
return (
""
if disable_local_saving
else [gr.update(choices=files.list_input_files())]
)
try:
# Read the file content
with open(file.name, "r", encoding="utf-8") as f:
text_content = f.read()
if disable_local_saving:
# When saving is disabled, put content directly in text input
# Normalize whitespace by replacing newlines with spaces
normalized_text = " ".join(text_content.split())
return normalized_text
else:
# When saving is enabled, save file and update dropdown
filename = os.path.basename(file.name)
target_path = os.path.join(files.INPUTS_DIR, filename)
# Handle duplicate filenames
base, ext = os.path.splitext(filename)
counter = 1
while os.path.exists(target_path):
new_name = f"{base}_{counter}{ext}"
target_path = os.path.join(files.INPUTS_DIR, new_name)
counter += 1
shutil.copy2(file.name, target_path)
return [gr.update(choices=files.list_input_files())]
except Exception as e:
print(f"Error handling file: {e}")
return (
""
if disable_local_saving
else [gr.update(choices=files.list_input_files())]
)
def generate_from_text(text, voice, format, speed):
"""Generate speech from direct text input"""
is_available, _ = api.check_api_status()
if not is_available:
gr.Warning("TTS Service is currently unavailable")
return [None, gr.update(choices=files.list_output_files())]
if not text or not text.strip():
gr.Warning("Please enter text in the input box")
return [None, gr.update(choices=files.list_output_files())]
# Only save text if local saving is enabled
if not disable_local_saving:
files.save_text(text)
result = api.text_to_speech(text, voice, format, speed)
if result is None:
gr.Warning("Failed to generate speech. Please try again.")
return [None, gr.update(choices=files.list_output_files())]
return [
result,
gr.update(
choices=files.list_output_files(), value=os.path.basename(result)
),
]
def generate_from_file(selected_file, voice, format, speed):
"""Generate speech from selected file"""
is_available, _ = api.check_api_status()
if not is_available:
gr.Warning("TTS Service is currently unavailable")
return [None, gr.update(choices=files.list_output_files())]
if not selected_file:
gr.Warning("Please select a file")
return [None, gr.update(choices=files.list_output_files())]
text = files.read_text_file(selected_file)
result = api.text_to_speech(text, voice, format, speed)
if result is None:
gr.Warning("Failed to generate speech. Please try again.")
return [None, gr.update(choices=files.list_output_files())]
return [
result,
gr.update(
choices=files.list_output_files(), value=os.path.basename(result)
),
]
def play_selected(file_path):
if file_path and os.path.exists(file_path):
return gr.update(value=file_path, visible=True)
return gr.update(visible=False)
def clear_files(voice, format, speed):
"""Delete all input files and clear UI components while preserving model settings"""
files.delete_all_input_files()
return [
gr.update(value=None, choices=[]), # file_select
None, # file_upload
gr.update(value=""), # file_preview
None, # audio_output
gr.update(choices=files.list_output_files()), # output_files
gr.update(value=voice), # voice
gr.update(value=format), # format
gr.update(value=speed), # speed
]
def clear_outputs():
"""Delete all output audio files and clear audio components"""
files.delete_all_output_files()
return [
None, # audio_output
gr.update(choices=[], value=None), # output_files
gr.update(visible=False), # selected_audio
]
# Connect event handlers
components["model"]["status_btn"].click(
fn=refresh_status,
outputs=[components["model"]["status_btn"], components["model"]["voice"]],
)
# Connect text submit button (always present)
components["input"]["text_submit"].click(
fn=generate_from_text,
inputs=[
components["input"]["text_input"],
components["model"]["voice"],
components["model"]["format"],
components["model"]["speed"],
],
outputs=[
components["output"]["audio_output"],
components["output"]["output_files"],
],
)
# Only connect file-related handlers if components exist
if components["input"]["file_select"] is not None:
components["input"]["file_select"].change(
fn=handle_file_select,
inputs=[components["input"]["file_select"]],
outputs=[components["input"]["file_preview"]],
)
if components["input"]["file_upload"] is not None:
# File upload handler - output depends on disable_local_saving
components["input"]["file_upload"].upload(
fn=handle_file_upload,
inputs=[components["input"]["file_upload"]],
outputs=[
components["input"]["text_input"]
if disable_local_saving
else components["input"]["file_select"]
],
)
if components["output"]["play_btn"] is not None:
components["output"]["play_btn"].click(
fn=play_selected,
inputs=[components["output"]["output_files"]],
outputs=[components["output"]["selected_audio"]],
)
if components["input"]["clear_files"] is not None:
components["input"]["clear_files"].click(
fn=clear_files,
inputs=[
components["model"]["voice"],
components["model"]["format"],
components["model"]["speed"],
],
outputs=[
components["input"]["file_select"],
components["input"]["file_upload"],
components["input"]["file_preview"],
components["output"]["audio_output"],
components["output"]["output_files"],
components["model"]["voice"],
components["model"]["format"],
components["model"]["speed"],
],
)
if components["output"]["clear_outputs"] is not None:
components["output"]["clear_outputs"].click(
fn=clear_outputs,
outputs=[
components["output"]["audio_output"],
components["output"]["output_files"],
components["output"]["selected_audio"],
],
)
if components["input"]["file_submit"] is not None:
components["input"]["file_submit"].click(
fn=generate_from_file,
inputs=[
components["input"]["file_select"],
components["model"]["voice"],
components["model"]["format"],
components["model"]["speed"],
],
outputs=[
components["output"]["audio_output"],
components["output"]["output_files"],
],
)
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