95 lines
3.3 KiB
Python
95 lines
3.3 KiB
Python
from typing import Optional
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from PyQt6.QtCore import QUrl
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from PyQt6.QtWebEngineCore import QWebEngineNewWindowRequest
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from PyQt6.QtWebEngineWidgets import QWebEngineView
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from PyQt6.QtWidgets import QVBoxLayout, QWidget, QProgressBar, QStyle, QToolBar
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class Browser(QWidget):
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"""
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A version of the QWebEngineView class with integrated progress bar and navigations bar.
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"""
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def __init__(self, url: Optional[QUrl] = None):
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super().__init__()
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# layout
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self._layout = QVBoxLayout()
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self.setLayout(self._layout)
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# navigation bar
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self.navigation = QToolBar()
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self._layout.addWidget(self.navigation, 0)
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style = self.style()
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self._action_back = self.navigation.addAction(
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style.standardIcon(QStyle.StandardPixmap.SP_ArrowBack),
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"Back"
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)
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self._action_reload = self.navigation.addAction(
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style.standardIcon(QStyle.StandardPixmap.SP_BrowserReload),
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"Reload"
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)
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self._action_forward = self.navigation.addAction(
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style.standardIcon(QStyle.StandardPixmap.SP_ArrowForward),
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"Forward"
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)
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# web widget
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self.web = QWebEngineView()
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self._layout.addWidget(self.web, 1)
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if url is not None:
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self.web.load(QUrl(url))
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# loading bar
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self.progress = QProgressBar()
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self._layout.addWidget(self.progress, 0)
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self.progress.setFixedHeight(6)
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self.progress.setTextVisible(False)
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self.progress.setMaximum(100)
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self.progress.hide()
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# connect the signals
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self.web.loadStarted.connect(self._load_started) # NOQA: connect exist
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self.web.loadProgress.connect(self._load_progress) # NOQA: connect exist
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self.web.loadFinished.connect(self._load_finished) # NOQA: connect exist
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self._action_back.triggered.connect(self.web.back) # NOQA: connect exist
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self._action_reload.triggered.connect(self.web.reload) # NOQA: connect exist
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self._action_forward.triggered.connect(self.web.forward) # NOQA: connect exist
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self.web.page().newWindowRequested.connect(self._on_web_new_window_request) # NOQA: connect exist
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# finalize the initialisation
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self.refresh_navigation_actions()
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# graphical methods
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def _load_started(self):
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# update the progress bar
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self.progress.setValue(0)
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self.progress.show()
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def _load_progress(self, value: int):
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# update the progress bar
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self.progress.setValue(value)
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def _load_finished(self):
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# update the progress bar
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self.progress.hide()
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# refresh the navigation buttons
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self.refresh_navigation_actions()
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def refresh_navigation_actions(self):
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history = self.web.history()
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# enable the navigation button depending on the history
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self._action_back.setEnabled(history.canGoBack())
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self._action_forward.setEnabled(history.canGoForward())
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def _on_web_new_window_request(self, request: QWebEngineNewWindowRequest):
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# by default, the WebEngineView will ignore new window request
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# instead the link that should be in a new window will be opened in the current one
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self.web.setUrl(request.requestedUrl())
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