Files
bearhub/bauh/view/qt/thread.py
2019-08-30 17:26:35 -03:00

388 lines
12 KiB
Python

import subprocess
import time
from datetime import datetime, timedelta
from typing import List, Type, Set
import requests
from PyQt5.QtCore import QThread, pyqtSignal
from bauh_api.abstract.cache import MemoryCache
from bauh_api.abstract.controller import SoftwareManager
from bauh_api.abstract.handler import ProcessWatcher
from bauh_api.abstract.model import PackageStatus, SoftwarePackage
from bauh_api.abstract.view import InputViewComponent, MessageType
from bauh_api.exception import NoInternetException
from bauh.view.qt.view_model import PackageView
class AsyncAction(QThread, ProcessWatcher):
signal_output = pyqtSignal(str) # print messages to the terminal widget
signal_confirmation = pyqtSignal(dict) # asks the users to confirm something
signal_finished = pyqtSignal(object) # informs the main window that the action has finished
signal_message = pyqtSignal(dict) # asks the GUI to show an error popup
signal_status = pyqtSignal(str) # changes the GUI status message
signal_substatus = pyqtSignal(str) # changes the GUI substatus message
def __init__(self):
super(AsyncAction, self).__init__()
self.wait_confirmation = False
self.confirmation_res = None
def request_confirmation(self, title: str, body: str, components: List[InputViewComponent] = None, confirmation_label: str = None, deny_label: str = None) -> bool:
self.wait_confirmation = True
self.signal_confirmation.emit({'title': title, 'body': body, 'components': components, 'confirmation_label': confirmation_label, 'deny_label': deny_label})
self.wait_user()
return self.confirmation_res
def confirm(self, res: bool):
self.confirmation_res = res
self.wait_confirmation = False
def wait_user(self):
while self.wait_confirmation:
time.sleep(0.01)
def print(self, msg: str):
if msg:
self.signal_output.emit(msg)
def show_message(self, title: str, body: str, type_: MessageType = MessageType.INFO):
self.signal_message.emit({'title': title, 'body': body, 'type': type_})
def notify_finished(self, res: object):
self.signal_finished.emit(res)
def change_status(self, status: str):
self.signal_status.emit(status)
def change_substatus(self, substatus: str):
self.signal_substatus.emit(substatus)
class UpdateSelectedApps(AsyncAction):
def __init__(self, manager: SoftwareManager, locale_keys: dict, apps_to_update: List[PackageView] = None):
super(UpdateSelectedApps, self).__init__()
self.apps_to_update = apps_to_update
self.manager = manager
self.root_password = None
self.locale_keys = locale_keys
def run(self):
success = False
if self.apps_to_update:
updated, updated_types = 0, set()
for app in self.apps_to_update:
self.change_status('{} {}...'.format(self.locale_keys['manage_window.status.upgrading'], app.model.base_data.name))
success = bool(self.manager.update(app.model, self.root_password, self))
if not success:
break
else:
updated += 1
updated_types.add(app.model.__class__)
self.signal_output.emit('\n')
self.notify_finished({'success': success, 'updated': updated, 'types': updated_types})
self.apps_to_update = None
class RefreshApps(AsyncAction):
def __init__(self, manager: SoftwareManager, app: PackageView = None, pkg_types: Set[Type[SoftwarePackage]] = None):
super(RefreshApps, self).__init__()
self.manager = manager
self.app = app # app that should be on list top
self.pkg_types = pkg_types
def run(self):
res = self.manager.read_installed(pkg_types=self.pkg_types)
refreshed_types = set()
if res:
idx_found, app_found = None, None
for idx, ins in enumerate(res.installed):
if self.pkg_types:
refreshed_types.add(ins.__class__)
if self.app and ins.get_type() == self.app.model.get_type() and ins.base_data.id == self.app.model.base_data.id:
idx_found = idx
app_found = ins
break
if app_found:
del res.installed[idx_found]
res.installed.insert(0, app_found)
elif self.pkg_types:
refreshed_types = self.pkg_types
self.notify_finished({'installed': res.installed, 'total': res.total, 'types': refreshed_types})
self.app = None
self.pkg_types = None
class UninstallApp(AsyncAction):
def __init__(self, manager: SoftwareManager, icon_cache: MemoryCache, app: PackageView = None):
super(UninstallApp, self).__init__()
self.app = app
self.manager = manager
self.icon_cache = icon_cache
self.root_password = None
def run(self):
if self.app:
success = self.manager.uninstall(self.app.model, self.root_password, self)
if success:
self.icon_cache.delete(self.app.model.base_data.icon_url)
self.manager.clean_cache_for(self.app.model)
self.notify_finished(self.app if success else None)
self.app = None
self.root_password = None
class DowngradeApp(AsyncAction):
def __init__(self, manager: SoftwareManager, locale_keys: dict, app: PackageView = None):
super(DowngradeApp, self).__init__()
self.manager = manager
self.app = app
self.locale_keys = locale_keys
self.root_password = None
def run(self):
if self.app:
success = False
try:
success = self.manager.downgrade(self.app.model, self.root_password, self)
except (requests.exceptions.ConnectionError, NoInternetException):
success = False
self.print(self.locale_keys['internet.required'])
finally:
self.notify_finished({'app': self.app, 'success': success})
self.app = None
self.root_password = None
class GetAppInfo(AsyncAction):
def __init__(self, manager: SoftwareManager, app: PackageView = None):
super(GetAppInfo, self).__init__()
self.app = app
self.manager = manager
def run(self):
if self.app:
info = {'__app__': self.app}
info.update(self.manager.get_info(self.app.model))
self.notify_finished(info)
self.app = None
class GetAppHistory(AsyncAction):
def __init__(self, manager: SoftwareManager, locale_keys: dict, app: PackageView = None):
super(GetAppHistory, self).__init__()
self.app = app
self.manager = manager
self.locale_keys = locale_keys
def run(self):
if self.app:
try:
self.notify_finished({'history': self.manager.get_history(self.app.model)})
except (requests.exceptions.ConnectionError, NoInternetException):
self.notify_finished({'error': self.locale_keys['internet.required']})
finally:
self.app = None
class SearchApps(AsyncAction):
def __init__(self, manager: SoftwareManager):
super(SearchApps, self).__init__()
self.word = None
self.manager = manager
def run(self):
apps_found = []
if self.word:
res = self.manager.search(self.word)
apps_found.extend(res.installed)
apps_found.extend(res.new)
self.notify_finished(apps_found)
self.word = None
class InstallApp(AsyncAction):
def __init__(self, manager: SoftwareManager, disk_cache: bool, icon_cache: MemoryCache, locale_keys: dict, pkg: PackageView = None):
super(InstallApp, self).__init__()
self.pkg = pkg
self.manager = manager
self.icon_cache = icon_cache
self.disk_cache = disk_cache
self.locale_keys = locale_keys
self.root_password = None
def run(self):
if self.pkg:
success = False
try:
success = self.manager.install(self.pkg.model, self.root_password, self)
if success and self.disk_cache:
self.pkg.model.installed = True
if self.pkg.model.supports_disk_cache():
icon_data = self.icon_cache.get(self.pkg.model.base_data.icon_url)
self.manager.cache_to_disk(app=self.pkg.model,
icon_bytes=icon_data.get('bytes') if icon_data else None,
only_icon=False)
except (requests.exceptions.ConnectionError, NoInternetException):
success = False
self.print(self.locale_keys['internet.required'])
finally:
self.signal_finished.emit(self.pkg if success else None)
self.pkg = None
class AnimateProgress(QThread):
signal_change = pyqtSignal(int)
def __init__(self):
super(AnimateProgress, self).__init__()
self.progress_value = 0
self.increment = 5
self.stop = False
def run(self):
current_increment = self.increment
while not self.stop:
self.signal_change.emit(self.progress_value)
if self.progress_value == 100:
current_increment = -current_increment
if self.progress_value == 0:
current_increment = self.increment
self.progress_value += current_increment
time.sleep(0.05)
self.progress_value = 0
class VerifyModels(QThread):
signal_updates = pyqtSignal()
def __init__(self, apps: List[PackageView] = None):
super(VerifyModels, self).__init__()
self.apps = apps
def run(self):
if self.apps:
stop_at = datetime.utcnow() + timedelta(seconds=30)
last_ready = 0
while True:
current_ready = 0
for app in self.apps:
current_ready += 1 if app.model.status == PackageStatus.READY else 0
if current_ready > last_ready:
last_ready = current_ready
self.signal_updates.emit()
if current_ready == len(self.apps):
self.signal_updates.emit()
break
if stop_at <= datetime.utcnow():
break
time.sleep(0.1)
self.apps = None
class RefreshApp(AsyncAction):
def __init__(self, manager: SoftwareManager, app: PackageView = None):
super(RefreshApp, self).__init__()
self.app = app
self.manager = manager
self.root_password = None
def run(self):
if self.app:
success = False
try:
success = self.manager.refresh(self.app.model, self.root_password, self)
except (requests.exceptions.ConnectionError, NoInternetException):
success = False
self.signal_output.emit(self.locale_keys['internet.required'])
finally:
self.app = None
self.signal_finished.emit(success)
class FindSuggestions(AsyncAction):
def __init__(self, man: SoftwareManager):
super(FindSuggestions, self).__init__()
self.man = man
def run(self):
sugs = self.man.list_suggestions(limit=-1)
self.notify_finished(sugs if sugs is not None else [])
class ListWarnings(QThread):
signal_warnings = pyqtSignal(list)
def __init__(self, man: SoftwareManager, locale_keys: dict):
super(QThread, self).__init__()
self.locale_keys = locale_keys
self.man = man
def run(self):
warnings = self.man.list_warnings()
if warnings:
self.signal_warnings.emit(warnings)
class RunApp(AsyncAction):
def __init__(self, app: PackageView = None):
super(RunApp, self).__init__()
self.app = app
def run(self):
if self.app:
try:
time.sleep(0.5)
subprocess.Popen(self.app.model.get_command().split(' '))
self.notify_finished(True)
except:
self.notify_finished(False)