i forgot to commit for maaany hours. its pretty much done i think :D

This commit is contained in:
anne 2023-07-14 15:09:56 +02:00
parent 486f2dad71
commit e6e8f4c1ef
8 changed files with 405 additions and 168 deletions

1
.gitignore vendored
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@ -179,3 +179,4 @@ cython_debug/
# and can be added to the global gitignore or merged into this file. For a more nuclear
# option (not recommended) you can uncomment the following to ignore the entire idea folder.
#.idea/

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@ -12,7 +12,7 @@ except ImportError:
import ostools
import parsetools
from thememanager import ThemeManagerWidget
from theme_repo_manager import ThemeManagerWidget
from generic import RightClickList, RightClickTree, MultiTextDialog
from dataobjs import pesterQuirk, PesterProfile, PesterHistory
from memos import TimeSlider, TimeInput
@ -1454,16 +1454,34 @@ class PesterOptions(QtWidgets.QDialog):
if not parent.randhandler.running:
self.randomscheck.setEnabled(False)
avail_themes = self.config.availableThemes()
self.themeBox = QtWidgets.QComboBox(self)
def reset_themeBox():
avail_themes = self.config.availableThemes()
PchumLog.debug("Resetting themeself.themeBox")
self.themeBox.clear()
notheme = theme.name not in avail_themes
for i, t in enumerate(avail_themes):
self.themeBox.addItem(t)
if (not notheme and t == theme.name) or (notheme and t == "pesterchum"):
self.themeBox.setCurrentIndex(i)
self.themeBox.setSizePolicy(
QtWidgets.QSizePolicy(
QtWidgets.QSizePolicy.Policy.MinimumExpanding,
QtWidgets.QSizePolicy.Policy.Minimum,
)
)
reset_themeBox()
self.refreshtheme = QtWidgets.QPushButton("Refresh current theme", self)
self.refreshtheme.clicked.connect(parent.themeSelectOverride)
self.refreshtheme.setSizePolicy(
QtWidgets.QSizePolicy(
QtWidgets.QSizePolicy.Policy.Minimum,
QtWidgets.QSizePolicy.Policy.Minimum,
)
)
self.themeManager = ThemeManagerWidget(self.config)
self.themeManager.rebuilt.connect( reset_themeBox )
# This makes it so that the themeBox gets updated when a theme is installed or removed through the repository
self.ghostchum = QtWidgets.QCheckBox("Pesterdunk Ghostchum!!", self)
self.ghostchum.setChecked(self.config.ghostchum())
@ -1676,8 +1694,12 @@ class PesterOptions(QtWidgets.QDialog):
layout_theme = QtWidgets.QVBoxLayout(widget)
layout_theme.setAlignment(QtCore.Qt.AlignmentFlag.AlignTop)
layout_theme.addWidget(QtWidgets.QLabel("Pick a Theme:"))
layout_theme.addWidget(self.themeBox)
layout_theme.addWidget(self.refreshtheme)
layout_theme_hbox = QtWidgets.QHBoxLayout()
layout_theme_hbox.addWidget(self.themeBox)
layout_theme_hbox.addWidget(self.refreshtheme)
layout_theme.addLayout(layout_theme_hbox)
layout_theme.addWidget(QtWidgets.QLabel("Get new themes:"))
layout_theme.addWidget(self.themeManager)
layout_theme.addWidget(self.ghostchum)
self.pages.addWidget(widget)

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@ -51,7 +51,13 @@ def validateDataDir():
logs = os.path.join(datadir, "logs")
errorlogs = os.path.join(datadir, "errorlogs")
backup = os.path.join(datadir, "backup")
themes = os.path.join(datadir, "themes")
# ~lisanne Datadir/themes for repository themes
# Apparently everything checks this folder for themes already
# So hopefully im not plugging into an existng system on accident
js_pchum = os.path.join(datadir, "pesterchum.js")
js_manifest = os.path.join(datadir, "manifest.js")
dirs = [datadir, profile, quirks, logs, errorlogs, backup]
for d in dirs:
@ -59,8 +65,9 @@ def validateDataDir():
os.makedirs(d, exist_ok=True)
# pesterchum.js
if not os.path.exists(js_pchum):
with open(js_pchum, "w") as f:
for filepath in [js_pchum, js_manifest]:
if not os.path.exists(filepath):
with open(filepath, "w") as f:
f.write("{}")

363
theme_repo_manager.py Normal file
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@ -0,0 +1,363 @@
import os
import io
import json
import zipfile
import logging
from shutil import rmtree
from datetime import datetime
from ostools import getDataDir
try:
from PyQt6 import QtCore, QtGui, QtWidgets, QtNetwork
from PyQt6.QtGui import QAction
_flag_selectable = QtCore.Qt.TextInteractionFlag.TextSelectableByMouse
_flag_topalign = QtCore.Qt.AlignmentFlag.AlignLeading|QtCore.Qt.AlignmentFlag.AlignLeft|QtCore.Qt.AlignmentFlag.AlignTop
except ImportError:
print("PyQt5 fallback (thememanager.py)")
from PyQt5 import QtCore, QtGui, QtWidgets, QtNetwork
from PyQt5.QtWidgets import QAction
_flag_selectable = QtCore.Qt.TextSelectableByMouse
_flag_topalign = QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft|QtCore.Qt.AlignTop
PchumLog = logging.getLogger("pchumLogger")
themeManager = None
# ~Lisanne
# This file has all the stuff needed to use a theme repository
# - ThemeManagerWidget, a GUI widget that lets the user install, update, & delete repository themes
# - ThemeManager, the class that the widget hooks up to. Handles fetching, downloading, installing, & keeps the manifest updated
# Manifest is a local file that tracks the metadata of themes downloaded from the repository
# Its a themename: {database entry} dict
class ThemeManager(QtCore.QObject):
# signals
theme_installed = QtCore.pyqtSignal(str) # theme name
zip_downloaded = QtCore.pyqtSignal(str, str) # theme name, zip location
database_refreshed = QtCore.pyqtSignal(dict) # self.manifest
manifest_updated = QtCore.pyqtSignal(dict) # self.manifest
errored = QtCore.pyqtSignal(str) # error_text
# variables
manifest = {}
database = {}
database_entries = {}
config = None
manifest_path = os.path.join(getDataDir(), "manifest.js")
NAManager = None
downloads = {}
def __init__(self, config):
super().__init__()
with open(self.manifest_path, 'r') as f:
self.manifest = json.load(f)
PchumLog.debug("Manifest.js loaded with: %s" % self.manifest)
self.config = config
self.NAManager = QtNetwork.QNetworkAccessManager()
self.NAManager.finished[QtNetwork.QNetworkReply].connect(self._on_reply)
self.validate_manifest()
self.refresh_database()
@QtCore.pyqtSlot()
def refresh_database(self):
PchumLog.debug("Refreshing theme repo database @ %s" % self.config.theme_repo_url())
promise = self.NAManager.get(QtNetwork.QNetworkRequest(QtCore.QUrl(self.config.theme_repo_url())))
def delete_theme(self, theme_name):
theme = self.manifest[theme_name]
directory = os.path.join(getDataDir(), 'themes', theme['name'])
if os.path.isdir(directory):
rmtree(directory)
self.manifest.pop(theme_name)
self.save_manifest()
self.manifest_updated.emit(self.manifest)
def save_manifest(self):
with open(self.manifest_path, 'w') as f:
json.dump(self.manifest, f)
PchumLog.debug("Saved manifes.js to %s" % self.manifest_path)
def validate_manifest(self):
all_themes = self.config.availableThemes()
for theme_name in self.manifest:
if not theme_name in all_themes:
PchumLog.warning("Theme %s from the manifest seems to have been deleted" % theme_name)
def download_theme(self, theme_name):
PchumLog.info("Downloading %s" % theme_name)
promise = self.NAManager.get(QtNetwork.QNetworkRequest(QtCore.QUrl(self.database_entries[theme_name]['download'])))
self.downloads[self.database_entries[theme_name]['download']] = self.database_entries[theme_name]
def has_update(self, theme_name):
if self.is_installed(theme_name) and theme_name in self.database_entries:
return self.manifest[theme_name]['version'] != self.database_entries[theme_name]['version']
return False
def is_installed(self, theme_name):
return theme_name in self.manifest
def is_database_valid(self):
return 'entries' in self.database and isinstance(self.database.get('entries'), list)
# using a slot here raises `ERROR - <class 'TypeError'>, connect() failed between finished(QNetworkReply*) and _on_reply()``
# maybe because of the underscore?
# @QtCore.pyqtSlot(QtNetwork.QNetworkReply)
def _on_reply(self, reply):
if reply.error() != QtNetwork.QNetworkReply.NetworkError.NoError:
PchumLog.error("An error occured contacting the repository: %s" % reply.error())
self.errored.emit("An error occured contacting the repository: %s" % reply.error())
print([reply.error()])
return
try:
original_url = reply.request().url().url()
# Check if zipfile or database fetch
if original_url in self.downloads:
theme = self.downloads[original_url]
self._handle_downloaded_zip(bytes(reply.readAll()), theme)
self.downloads.pop(original_url)
self.manifest[theme['name']] = theme
self.save_manifest()
self.manifest_updated.emit(self.manifest)
else:
as_json = bytes(reply.readAll()).decode("utf-8")
self.database = json.loads(as_json)
self.database_entries = {}
if not self.is_database_valid():
PchumLog.error('Incorrect database format, missing "entries"')
self.errored.emit('Incorrect database format, missing "entries"')
return
self.database_entries = {}
for dbitem in self.database['entries']:
self.database_entries[dbitem['name']] = dbitem
self.database_refreshed.emit(self.database)
except json.decoder.JSONDecodeError as e:
PchumLog.error("Could not decode JSON: %s" % e)
self.errored.emit("Could not decode JSON: %s" % e)
return
def _handle_downloaded_zip(self, zip_buffer, theme):
# ~liasnne TODO: i dont know if this is inside a thread or not so
# probably check to make sure it is
# when its not 5 am
directory = os.path.join(getDataDir(), 'themes', theme['name'])
with zipfile.ZipFile(io.BytesIO(zip_buffer)) as z:
if os.path.isdir(directory):
rmtree(directory)
# Deletes old files that have been removed in an update
z.extractall(directory)
class ThemeManagerWidget(QtWidgets.QWidget):
icons = None
config = None
rebuilt = QtCore.pyqtSignal()
def __init__(self, config, parent=None):
super().__init__(parent)
self.icons = [QtGui.QIcon("img/download_pending.png"), QtGui.QIcon("img/download_done.png"), QtGui.QIcon("img/download_update.png"), ]
self.config = config
global themeManager
if themeManager == None or not themeManager.is_database_valid():
themeManager = ThemeManager(config)
self.setupUI()
else:
self.setupUI()
self.rebuild()
themeManager.database_refreshed.connect(self._on_database_refreshed)
themeManager.manifest_updated.connect(self._on_database_refreshed)
def setupUI(self):
self.layout_main = QtWidgets.QVBoxLayout(self)
self.setLayout(self.layout_main)
# Search bar
# TODO: implement searching
# self.line_search = QtWidgets.QLineEdit()
# self.line_search.setPlaceholderText("Search for themes")
# self.layout_main.addWidget(self.line_search)
# Main layout
# [list of themes/results] | [selected theme details]
layout_hbox_list_and_details = QtWidgets.QHBoxLayout()
# This is the list of database themes
self.list_results = QtWidgets.QListWidget()
self.list_results.setSizePolicy(
QtWidgets.QSizePolicy(
QtWidgets.QSizePolicy.Policy.Expanding,
QtWidgets.QSizePolicy.Policy.Expanding,
)
)
self.list_results.itemClicked.connect(self._on_theme_selected)
layout_hbox_list_and_details.addWidget(self.list_results)
# This is the right side, has the install buttons & all the theme details of the selected item
layout_vbox_details = QtWidgets.QVBoxLayout()
# The theme details are inside a scroll container in case of small window
self.frame_scroll = QtWidgets.QScrollArea()
self.frame_scroll.setSizePolicy(
QtWidgets.QSizePolicy(
QtWidgets.QSizePolicy.Policy.Preferred,
QtWidgets.QSizePolicy.Policy.Expanding,
)
)
# The vbox that the detail labels will rest in
layout_vbox_scroll_insides = QtWidgets.QVBoxLayout()
# here starts the actual detail labels
# Selected theme's name
self.lbl_theme_name = QtWidgets.QLabel("Click a theme to get started")
self.lbl_theme_name.setTextInteractionFlags(_flag_selectable)
self.lbl_theme_name.setStyleSheet("QLabel { font-size: 16px; font-weight:bold;}")
self.lbl_theme_name.setWordWrap(False)
layout_vbox_scroll_insides.addWidget(self.lbl_theme_name)
# Author name
self.lbl_author_name = QtWidgets.QLabel("")
self.lbl_author_name.setTextInteractionFlags(_flag_selectable)
layout_vbox_scroll_insides.addWidget(self.lbl_author_name)
# description. this needs to be the biggest
self.lbl_description = QtWidgets.QLabel("")
self.lbl_description.setTextInteractionFlags(_flag_selectable)
self.lbl_description.setSizePolicy(
QtWidgets.QSizePolicy(
QtWidgets.QSizePolicy.Policy.Preferred,
QtWidgets.QSizePolicy.Policy.MinimumExpanding,
)
)
self.lbl_description.setAlignment(_flag_topalign)
self.lbl_description.setWordWrap(True)
layout_vbox_scroll_insides.addWidget(self.lbl_description)
# requires. shows up if a theme has "inherits" set & we dont have it installed
self.lbl_requires = QtWidgets.QLabel("")
self.lbl_requires.setTextInteractionFlags(_flag_selectable)
layout_vbox_scroll_insides.addWidget(self.lbl_requires)
# Version number. this will also show the current installed one if there is an update
self.lbl_version = QtWidgets.QLabel("")
self.lbl_version.setTextInteractionFlags(_flag_selectable)
layout_vbox_scroll_insides.addWidget(self.lbl_version)
# Last update time
self.lbl_last_update = QtWidgets.QLabel("")
self.lbl_last_update.setWordWrap(True)
self.lbl_last_update.setTextInteractionFlags(_flag_selectable)
layout_vbox_scroll_insides.addWidget(self.lbl_last_update)
# Theme details done, so we wont need the scroll after this
self.frame_scroll.setLayout(layout_vbox_scroll_insides)
layout_vbox_details.addWidget(self.frame_scroll)
# Insta//uninstall buttons
# "Uninstall" button. Only visisble when the selected thene is installed
self.btn_uninstall = QtWidgets.QPushButton("Uninstall", self)
self.btn_uninstall.setHidden(True)
self.btn_uninstall.clicked.connect(self._on_uninstall_clicked)
layout_vbox_details.addWidget(self.btn_uninstall)
# "Install" button. can also say "Update" if an update is availible
# Only visible when not installed or if theres an update
self.btn_install = QtWidgets.QPushButton("Install", self)
self.btn_install.clicked.connect(self._on_install_clicked)
self.btn_install.setDisabled(True)
layout_vbox_details.addWidget(self.btn_install)
# Done with details
layout_hbox_list_and_details.addLayout(layout_vbox_details)
self.layout_main.addLayout(layout_hbox_list_and_details)
self.btn_refresh = QtWidgets.QPushButton("Refresh", self)
self.btn_refresh.clicked.connect(themeManager.refresh_database) # Conneced to themeManager!
self.layout_main.addWidget(self.btn_refresh)
self.lbl_error = QtWidgets.QLabel("")
self.lbl_error.setVisible(False)
self.lbl_error.setWordWrap(True)
themeManager.errored.connect(self._on_fetch_error)
self.lbl_error.setTextInteractionFlags(_flag_selectable)
self.lbl_error.setStyleSheet(" QLabel { background-color:black; color:red; font-size: 16px;}")
self.layout_main.addWidget(self.lbl_error)
def _on_fetch_error(self, text):
self.lbl_error.setText(text)
self.lbl_error.setVisible(True)
def _on_uninstall_clicked(self):
theme = themeManager.database['entries'][self.list_results.currentRow()]
themeManager.delete_theme(theme['name'])
def _on_install_clicked(self):
theme = themeManager.database['entries'][self.list_results.currentRow()]
themeManager.download_theme(theme['name'])
@QtCore.pyqtSlot(QtWidgets.QListWidgetItem)
def _on_theme_selected(self, item):
index = self.list_results.currentRow()
theme = themeManager.database['entries'][index]
theme_name = theme['name']
is_installed = themeManager.is_installed(theme_name)
has_update = themeManager.has_update(theme_name)
self.btn_install.setDisabled(False)
self.btn_install.setText( "Update" if has_update else "Install" )
self.btn_install.setVisible( (is_installed and has_update) or not is_installed )
self.btn_uninstall.setVisible( themeManager.is_installed(theme_name) )
self.lbl_theme_name.setText(theme_name)
self.lbl_author_name.setText("By %s" % theme['author'])
self.lbl_description.setText(theme['description'])
version_text = "Version %s" % theme['version']
if has_update:
version_text += " (Installed: %s)" % themeManager.manifest[theme_name]['version']
self.lbl_version.setText( version_text )
self.lbl_requires.setText( ("Requires %s" % theme['inherits']) if theme['inherits'] else "")
self.lbl_last_update.setText( "Released on: " + datetime.fromtimestamp(theme['updated']).strftime("%d/%m/%Y, %H:%M") )
@QtCore.pyqtSlot(dict)
def _on_database_refreshed(self,_):
self.rebuild()
def rebuild(self):
database = themeManager.database
self.list_results.clear()
self.lbl_error.setText("")
self.lbl_error.setVisible(False)
if not themeManager.is_database_valid():
self.lbl_error.setText("")
self.lbl_error.setVisible(True)
# Repopulate the list
for dbitem in database['entries']:
# Determine the suffix
icon = self.icons[0]
status = ''
if themeManager.is_installed(dbitem['name']):
if themeManager.has_update(dbitem['name']):
status = '~ (update available)'
icon = self.icons[2]
else:
status = '~ (installed)'
icon = self.icons[1]
text = "%s by %s %s" % (dbitem['name'], dbitem['author'], status)
item = QtWidgets.QListWidgetItem(icon, text)
self.list_results.addItem(item)
self.btn_install.setDisabled(True)
for lbl in [self.lbl_author_name, self.lbl_description, self.lbl_version, self.lbl_requires, self.lbl_last_update]:
lbl.setText("")
self.lbl_theme_name.setText("Click a theme to get started")
self.btn_uninstall.setVisible(False)
self.btn_install.setVisible(True)
self.btn_install.setDisabled(True)
self.rebuilt.emit()
PchumLog.debug("Rebuilt emitted")

View file

@ -1,156 +0,0 @@
import logging
from os import remove
try:
from PyQt6 import QtCore, QtGui, QtWidgets, QtNetwork
from PyQt6.QtGui import QAction
_flag_selectable = QtCore.Qt.TextInteractionFlag.TextSelectableByMouse
_flag_topalign = QtCore.Qt.AlignmentFlag.AlignLeading|QtCore.Qt.AlignmentFlag.AlignLeft|QtCore.Qt.AlignmentFlag.AlignTop
except ImportError:
print("PyQt5 fallback (menus.py)")
from PyQt5 import QtCore, QtGui, QtWidgets, QtNetwork
from PyQt5.QtWidgets import QAction
_flag_selectable = QtCore.Qt.TextSelectableByMouse
_flag_topalign = QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft|QtCore.Qt.AlignTop
# ~Lisanne
# This file has all the stuff needed to use a theme repository
# - ThemeManagerWidget, a GUI widget that
# - class for fetching & parsing database
# - class for handling installs & uninstalls. it also updates the manifest
# - manifest variable / json which keeps track of installed themes & their version
def unzip_file(path_zip, path_destination):
pass
class ThemeManagerWidget(QtWidgets.QWidget):
manifest = {}
database = {}
config = None
promise = None
def __init__(self, config, parent=None):
super().__init__(parent)
self.config = config
self.setupUI()
self.refresh()
@QtCore.pyqtSlot(QtWidgets.QListWidgetItem)
def themeSelected(self, item):
print("Done!")
print(item)
pass
@QtCore.pyqtSlot(QtNetwork.QNetworkReply)
def receiveReply(self, reply):
print(reply)
breakpoint
@QtCore.pyqtSlot()
def refresh(self):
print("Starting refresh @ ",self.config.theme_repo_url())
request = QtNetwork.QNetworkRequest()
request.setUrl(QtCore.QUrl(self.config.theme_repo_url()))
manager = QtNetwork.QNetworkAccessManager()
promise = manager.get(request)
manager.finished[QtNetwork.QNetworkReply].connect(self.receiveReply)
def setupUI(self):
self.layout_main = QtWidgets.QVBoxLayout(self)
self.setLayout(self.layout_main)
# Search bar
self.line_search = QtWidgets.QLineEdit()
self.line_search.setPlaceholderText("Search for themes")
self.layout_main.addWidget(self.line_search)
# Main layout
# [list of themes/results] | [selected theme details]
layout_hbox_list_and_details = QtWidgets.QHBoxLayout()
# This is the list of database themes
self.list_results = QtWidgets.QListWidget()
self.list_results.setSizePolicy(
QtWidgets.QSizePolicy(
QtWidgets.QSizePolicy.Policy.MinimumExpanding,
QtWidgets.QSizePolicy.Policy.MinimumExpanding,
)
)
self.list_results.itemActivated.connect(self.themeSelected)
layout_hbox_list_and_details.addWidget(self.list_results)
# This is the right side, has the install buttons & all the theme details of the selected item
layout_vbox_details = QtWidgets.QVBoxLayout()
# The theme details are inside a scroll container in case of small window
self.frame_scroll = QtWidgets.QScrollArea()
self.frame_scroll.setSizePolicy(
QtWidgets.QSizePolicy(
QtWidgets.QSizePolicy.Policy.Preferred,
QtWidgets.QSizePolicy.Policy.Expanding,
)
)
# The vbox that the detail labels will rest in
layout_vbox_scroll_insides = QtWidgets.QVBoxLayout()
# here starts the actual detail labels
# Selected theme's name
self.lbl_theme_name = QtWidgets.QLabel("Theme name here")
self.lbl_theme_name.setTextInteractionFlags(_flag_selectable)
self.lbl_theme_name.setStyleSheet("QLabel { font-size: 16px; font-weight:bold;}")
self.lbl_theme_name.setWordWrap(True)
layout_vbox_scroll_insides.addWidget(self.lbl_theme_name)
# Author name
self.lbl_author_name = QtWidgets.QLabel("Author: ?")
self.lbl_author_name.setTextInteractionFlags(_flag_selectable)
layout_vbox_scroll_insides.addWidget(self.lbl_author_name)
# description. this needs to be the biggest
self.lbl_description = QtWidgets.QLabel("Description")
self.lbl_description.setTextInteractionFlags(_flag_selectable)
self.lbl_description.setSizePolicy(
QtWidgets.QSizePolicy(
QtWidgets.QSizePolicy.Policy.Preferred,
QtWidgets.QSizePolicy.Policy.MinimumExpanding,
)
)
self.lbl_description.setAlignment(_flag_topalign)
self.lbl_description.setWordWrap(True)
layout_vbox_scroll_insides.addWidget(self.lbl_description)
# requires. shows up if a theme has "inherits" set & we dont have it installed
self.lbl_requires = QtWidgets.QLabel("Requires: pibby")
self.lbl_requires.setTextInteractionFlags(_flag_selectable)
layout_vbox_scroll_insides.addWidget(self.lbl_requires)
# Version number. this will also show the current installed one if there is an update
self.lbl_version = QtWidgets.QLabel("Version: 2 (installed: 0)")
self.lbl_version.setTextInteractionFlags(_flag_selectable)
layout_vbox_scroll_insides.addWidget(self.lbl_version)
# Last update time
self.lbl_last_update = QtWidgets.QLabel("DD/MM/YYYY HH:MM")
self.lbl_last_update.setTextInteractionFlags(_flag_selectable)
layout_vbox_scroll_insides.addWidget(self.lbl_last_update)
# Theme details done, so we wont need the scroll after this
self.frame_scroll.setLayout(layout_vbox_scroll_insides)
layout_vbox_details.addWidget(self.frame_scroll)
# Insta//uninstall buttons
# "Uninstall" button. Only visisble when the selected thene is installed
self.btn_uninstall = QtWidgets.QPushButton("Uninstall", self)
self.btn_uninstall.setHidden(True)
layout_vbox_details.addWidget(self.btn_uninstall)
# "Install" button. can also say "Update" if an update is availible
self.btn_install = QtWidgets.QPushButton("Install", self)
layout_vbox_details.addWidget(self.btn_install)
# Done with details
layout_hbox_list_and_details.addLayout(layout_vbox_details)
self.layout_main.addLayout(layout_hbox_list_and_details)
self.btn_refresh = QtWidgets.QPushButton("Refresh", self)
self.btn_refresh.clicked.connect(self.refresh)
self.layout_main.addWidget(self.btn_refresh)