beginnings of downloader class
This commit is contained in:
Brennen Raimer
100
portable_computing_toolkit_installer/ui/downloader.py
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100
portable_computing_toolkit_installer/ui/downloader.py
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from pathlib import Path
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import webbrowser
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from PyQt5 import QtCore, QtGui, QtNetwork, QtWebEngineWidgets, QtWidgets
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from PyQt5.uic import loadUi
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class Downloader(QtWidgets.QMainWindow):
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def __init__(self, tool_name, tool_info, download_directory, parent = None, flags = None):
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super().__init__(parent, flags)
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loadUi(Path(__file__).parent / "downloader.ui", baseinstance = self)
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self.hide()
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#create an off-the-record profile, isolated from other Downloader objects
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new_page = QtWebEngineWidgets.QtWebEnginePage(QtWebEngineWidgets.QWebEngineProfile(self.web_view))
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self.web_view.setPage(new_page)
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#set application style and decorate pushbuttons
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self._style = QtWidgets.QApplication.instance().style()
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self.setWindowIcon(QtWidgets.QApplication.instance().windowIcon())
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self.back_button.setIcon(self._style.standardIcon(self._style.SP_ArrowBack))
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self.forward_button.setIcon(self._style.standardIcon(self._style.SP_ArrowForward))
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self.reload_stop_button.setIcon(self._style.standardIcon(self._style.SP_BrowserReload))
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self.home_button.setIcon(self._style.standardIcon(self._style.SP_ArrowUp))
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#connect signals to make useable as a browser
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self.web_view.urlChanged.connect(lambda url: self.address_bar.setText(url.toString()))
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self.web_view.loadStarted.connect(self._reload_becomes_stop)
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self.web_view.loadFinished.connect(self._stop_becomes_reload)
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self.address_bar.returnPressed.connect(lambda: self.web_view.load(QtCore.QUrl(self.address_bar.text())))
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#connect cancel actions to handlers
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self.actionCancel.triggered.connect(self._cancel_manual_search)
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self.actionCancel_and_Open_Issue_on_Github.triggered.connect(self._cancel_manual_search_open_issue)
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#set attributes
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self._tool_name = tool_name
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self._tool_info = tool_info
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self._download_directory = download_directory
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#name window from attribute
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self.setWindowTitle(f"Find {self._tool_name}")
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#get homepage from attributes and set home button to load it
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self._home_page = tool_info["homepage"]
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self.home_button.clicked.connect(lambda: self.web_view.load(QtCore.QUrl(self._home_page)))
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def _reload_becomes_stop(self):
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"""Turns the reload button into a stop button.
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"""
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self._reload_stop_button.clicked.disconnect()
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self._reload_stop_button.clicked.connect(self.web_view.stop)
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self._reload_stop_button.setToolTip("Stop")
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self._reload_stop_button.setIcon(self._style.standardIcon(self._style.SP_BrowserStop))
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self._check_history()
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def _stop_becomes_reload(self, ok):
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"""Turns a temporary stop button back into a reload button
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Args:
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ok (bool): Received from signal indicating load was stopped without error (True) or because of error (False). Ignored.
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"""
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self._reload_stop_button.clicked.disconnect()
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self._reload_stop_button.clicked.connect(self.web_view.reload)
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self._reload_stop_button.setToolTip("Reload")
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self._reload_stop_button.setIcon(self._style.standardIcon(self._style.SP_BrowserReload))
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self._check_history()
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def _check_history(self):
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if self.web_view.history().canGoBack():
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self.back_button.setEnabled(True)
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else:
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self.back_button.setEnabled(False)
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if self.web_view.history().canGoForward():
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self.forward_button.setEnabled(True)
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else:
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self.forward_button.setEnabled(False)
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def _cancel_manual_search(self):
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self.close()
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QtCore.QThread.currentThread().exit(1)
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def _cancel_manual_search_open_issue(self):
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self.close()
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webbrowser.open_new_tab("https://github.com/norweeg/portable-computing-toolkit-installer/issues/new")
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QtCore.QThread.currentThread().exit(1)
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def begin_manual_search(self):
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self.web_view.history().clear()
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self._check_history()
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self.show()
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self.web_view.load(QtCore.QUrl(self._home_page))
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def begin_auto_search(self):
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pass
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def _download_file(self):
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pass
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class DownloadWorker(QtCore.QRunnable):
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def __init__(self, tool_name, tool_info, download_directory):
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super().__init__()
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self._downloader = Downloader(tool_name, tool_info, download_directory)
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def run(self):
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self._downloader.begin_auto_search()
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182
portable_computing_toolkit_installer/ui/downloader.ui
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182
portable_computing_toolkit_installer/ui/downloader.ui
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<?xml version="1.0" encoding="UTF-8"?>
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<ui version="4.0">
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<class>MainWindow</class>
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<widget class="QMainWindow" name="MainWindow">
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<property name="geometry">
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<rect>
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<x>0</x>
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<y>0</y>
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<width>800</width>
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<height>600</height>
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</rect>
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</property>
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<property name="windowTitle">
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<string>MainWindow</string>
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</property>
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<widget class="QWidget" name="centralwidget">
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<layout class="QVBoxLayout" name="verticalLayout">
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<item>
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<widget class="QFrame" name="frame">
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<property name="frameShape">
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<enum>QFrame::StyledPanel</enum>
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</property>
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<property name="frameShadow">
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<enum>QFrame::Raised</enum>
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</property>
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<layout class="QHBoxLayout" name="horizontalLayout">
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<item>
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<widget class="QPushButton" name="back_button">
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<property name="enabled">
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<bool>false</bool>
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</property>
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<property name="toolTip">
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<string>Back</string>
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</property>
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<property name="text">
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<string/>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QPushButton" name="forward_button">
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<property name="enabled">
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<bool>false</bool>
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</property>
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<property name="toolTip">
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<string>Forward</string>
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</property>
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<property name="text">
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<string/>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QPushButton" name="reload_stop_button">
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<property name="toolTip">
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<string>Reload</string>
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</property>
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<property name="text">
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<string/>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QPushButton" name="home_button">
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<property name="toolTip">
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<string>Home</string>
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</property>
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<property name="text">
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<string/>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QLineEdit" name="address_bar">
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<property name="placeholderText">
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<string>Enter a URL</string>
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</property>
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</widget>
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</item>
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</layout>
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</widget>
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</item>
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<item>
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<widget class="QWebEngineView" name="web_view">
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<property name="url">
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<url>
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<string>about:blank</string>
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</url>
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</property>
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</widget>
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</item>
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</layout>
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</widget>
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<widget class="QMenuBar" name="menubar">
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<property name="geometry">
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<rect>
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<x>0</x>
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<y>0</y>
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<width>800</width>
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<height>21</height>
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</rect>
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</property>
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<widget class="QMenu" name="menuActions">
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<property name="title">
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<string>Actions</string>
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</property>
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<addaction name="actionCancel"/>
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<addaction name="actionCancel_and_Open_Issue_on_Github"/>
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</widget>
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<addaction name="menuActions"/>
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</widget>
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<widget class="QStatusBar" name="statusbar"/>
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<action name="actionCancel">
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<property name="text">
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<string>Cancel</string>
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</property>
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</action>
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<action name="actionCancel_and_Open_Issue_on_Github">
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<property name="text">
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<string>Cancel and Open Issue on Github</string>
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</property>
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</action>
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</widget>
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<customwidgets>
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<customwidget>
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<class>QWebEngineView</class>
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<extends>QWidget</extends>
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<header location="global">QtWebEngineWidgets/QWebEngineView</header>
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</customwidget>
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</customwidgets>
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<resources/>
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<connections>
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<connection>
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<sender>back_button</sender>
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<signal>clicked()</signal>
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<receiver>web_view</receiver>
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<slot>back()</slot>
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<hints>
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<hint type="sourcelabel">
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<x>34</x>
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<y>51</y>
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</hint>
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<hint type="destinationlabel">
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<x>399</x>
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<y>324</y>
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</hint>
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</hints>
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</connection>
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<connection>
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<sender>forward_button</sender>
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<signal>clicked()</signal>
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<receiver>web_view</receiver>
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<slot>forward()</slot>
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<hints>
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<hint type="sourcelabel">
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<x>72</x>
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<y>51</y>
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</hint>
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<hint type="destinationlabel">
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<x>399</x>
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<y>324</y>
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</hint>
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</hints>
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</connection>
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<connection>
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<sender>reload_stop_button</sender>
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<signal>clicked()</signal>
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<receiver>web_view</receiver>
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<slot>reload()</slot>
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<hints>
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<hint type="sourcelabel">
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<x>110</x>
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<y>51</y>
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</hint>
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<hint type="destinationlabel">
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<x>399</x>
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<y>324</y>
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</hint>
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</hints>
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</connection>
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</connections>
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</ui>
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