velopack/samples/PythonWXPython/main.py at develop · velopack/velopack · GitHub

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import logging

import threading

import wx

import velopack

from _build_config import update_url

class BufferedLogHandler(logging.Handler):

"""Buffers log messages and provides access to them"""

def __init__(self):

super().__init__()

self.buffer = []

def emit(self, record):

msg = self.format(record)

self.buffer.append(msg)

def get_messages(self):

"""Get all buffered messages and clear the buffer"""

messages = self.buffer[:]

self.buffer.clear()

return messages

# Global buffered handler

log_handler = BufferedLogHandler()

class MainFrame(wx.Frame):

def __init__(self):

super().__init__(None, title="Velopack Sample", size=(600, 400))

# create velopacks update manager

self.update_manager = None

self.update_info = None

# Create main panel

panel = wx.Panel(self)

# Create buttons with minimum width to prevent text cutoff

self.check_btn = wx.Button(panel, label="Check", size=(150, -1))

self.download_btn = wx.Button(panel, label="Download", size=(150, -1))

self.apply_btn = wx.Button(panel, label="Apply", size=(150, -1))

# Start with Download and Apply disabled

self.download_btn.Disable()

self.apply_btn.Disable()

# Create log text control (multiline and read-only)

self.log_text = wx.TextCtrl(panel,

style=wx.TE_MULTILINE | wx.TE_READONLY)

# Bind button events

self.check_btn.Bind(wx.EVT_BUTTON, self.on_check)

self.download_btn.Bind(wx.EVT_BUTTON, self.on_download)

self.apply_btn.Bind(wx.EVT_BUTTON, self.on_apply)

# Layout

self.setup_layout(panel)

# Center the frame

self.Center()

# Start timer to check for log messages

self.timer = wx.Timer(self)

self.Bind(wx.EVT_TIMER, self.on_timer)

self.timer.Start(5)

logging.info("GUI initialized and ready")

def on_timer(self, event):

"""Check for new log messages and add them to text control"""

messages = log_handler.get_messages()

for msg in messages:

self.log_text.AppendText(f"{msg}\n")

def setup_layout(self, panel):

# Create sizers

main_sizer = wx.BoxSizer(wx.VERTICAL)

button_sizer = wx.BoxSizer(wx.HORIZONTAL)

# Add buttons to horizontal sizer

button_sizer.Add(self.check_btn, 0, wx.ALL, 5)

button_sizer.Add(self.download_btn, 0, wx.ALL, 5)

button_sizer.Add(self.apply_btn, 0, wx.ALL, 5)

# Add to main sizer

main_sizer.Add(button_sizer, 0, wx.ALL | wx.EXPAND, 10)

main_sizer.Add(self.log_text, 1, wx.ALL | wx.EXPAND, 10)

panel.SetSizer(main_sizer)

def on_check(self, event):

try:

self.update_manager = velopack.UpdateManager(update_url)

except Exception as e:

logging.error(f"Failed to initialize update manager: {e}")

return

self.update_info = self.update_manager.check_for_updates()

if self.update_info:

logging.info(f"Update available: {self.update_info}")

# Enable download and apply buttons when update is available

self.download_btn.Enable()

self.apply_btn.Enable()

else:

logging.info("No updates available")

# Keep buttons disabled if no update

self.download_btn.Disable()

self.apply_btn.Disable()

def on_download(self, event):

if not self.update_info:

logging.warning("No update information available. Please check first.")

return

# Disable buttons during download

self.download_btn.Disable()

self.apply_btn.Disable()

def progress_callback(progress):

# Update button text with progress percentage

wx.CallAfter(self.download_btn.SetLabel, f"Downloading... {progress}%")

def download_thread():

try:

# Store original button label

original_label = self.download_btn.GetLabel()

# Call download_updates with progress callback

self.update_manager.download_updates(self.update_info, progress_callback)

# Restore original button label when done

wx.CallAfter(self.download_btn.SetLabel, original_label)

wx.CallAfter(self.download_btn.Enable)

wx.CallAfter(self.apply_btn.Enable)

wx.CallAfter(logging.info, "Update downloaded successfully")

except Exception as e:

# Restore button label on error

wx.CallAfter(self.download_btn.SetLabel, "Download")

wx.CallAfter(self.download_btn.Enable)

wx.CallAfter(self.apply_btn.Enable)

wx.CallAfter(logging.error, f"Failed to download update: {e}")

# Start download in a separate thread

thread = threading.Thread(target=download_thread, daemon=True)

thread.start()

def on_apply(self, event):

if not self.update_info:

logging.warning("No update information available. Please check first.")

return

try:

self.update_manager.apply_updates_and_restart(self.update_info)

logging.info("Update applied successfully")

except Exception as e:

logging.error(f"Failed to apply update: {e}")

def setup_logging():

"""Setup logging to use buffered handler"""

logger = logging.getLogger()

# Remove existing handlers

for handler in logger.handlers[:]:

logger.removeHandler(handler)

# Setup our buffered handler

formatter = logging.Formatter('- %(levelname)s - %(message)s')

log_handler.setFormatter(formatter)

log_handler.setLevel(logging.INFO)

logger.addHandler(log_handler)

logger.setLevel(logging.INFO)

if __name__ == "__main__":

# Setup logging before velopack runs

setup_logging()

# Run velopack early

velopack.App().run()

# Create and run the wx app

app = wx.App(False)

frame = MainFrame()

frame.Show()

app.MainLoop()

velopack/samples/PythonWXPython/main.py at develop · velopack/velopack · GitHub

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