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# -*- coding: utf-8 -*-
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# Copyright 2012 Canonical Ltd.
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License version 3, as published
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# by the Free Software Foundation.
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranties of
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# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
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# PURPOSE. See the GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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"""A Expander widget similar to the GtkExpander."""
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from PyQt4.QtCore import pyqtSignal
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from PyQt4.QtGui import QHBoxLayout, QLabel, QSizePolicy, QVBoxLayout, QWidget
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from ubuntu_sso.qt.arrow import QArrow
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# we are following the Qt style, lets tell pylint to ignore it
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# pylint: disable=C0103
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class QExpanderLabel(QWidget):
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"""Widget used to show the label of a QExpander."""
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clicked = pyqtSignal()
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def __init__(self, label, parent=None):
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"""Create a new instance."""
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super(QExpanderLabel, self).__init__(parent)
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self.arrow = QArrow(QArrow.RIGHT)
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self.label = QLabel(label)
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layout = QHBoxLayout()
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layout.setContentsMargins(0, 0, 0, 0)
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self.setLayout(layout)
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layout.addWidget(self.arrow)
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layout.addWidget(self.label)
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def mousePressEvent(self, event):
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if self.arrow.direction == QArrow.DOWN:
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self.arrow.direction = QArrow.RIGHT
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self.arrow.direction = QArrow.DOWN
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"""Return the text of the label."""
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return self.label.text()
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def setText(self, text):
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"""Set the text of the label."""
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self.label.setText(text)
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class QExpander(QWidget):
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"""A Qt implementation similar to GtkExpander."""
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def __init__(self, label, expanded=False, parent=None):
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"""Create a new instance."""
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super(QExpander, self).__init__(parent)
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self.label = QExpanderLabel(label)
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self.label.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Minimum)
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self.layout = QVBoxLayout()
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self.layout.setContentsMargins(0, 0, 0, 0)
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self.setLayout(self.layout)
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self.layout.addWidget(self.label)
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self.layout.addStretch()
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self.label.clicked.connect(self._on_label_clicked)
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self.setExpanded(expanded)
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def _on_label_clicked(self):
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"""The expander widget was clicked."""
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self._expanded = not self._expanded
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self.setExpanded(self._expanded)
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def addWidget(self, widget):
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"""Add a widget to the expander.
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The previous widget will be removed.
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if self.content is not None:
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self.layout.removeWidget(self.content)
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self.content.setVisible(self._expanded)
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self.layout.insertWidget(1, self.content)
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"""Return the text of the label."""
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return self.label.text()
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def setText(self, text):
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"""Set the text of the label."""
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self.label.setText(text)
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"""Return if widget is expanded."""
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return self._expanded
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# pylint: disable=W0201
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def setExpanded(self, is_expanded):
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"""Expand the widget or not."""
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self._expanded = is_expanded
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self.label.arrow.direction = QArrow.DOWN
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self.label.arrow.direction = QArrow.RIGHT
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if self.content is not None:
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self.content.setVisible(self._expanded)
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# pylint: enable=W0201
added
removed
ubuntu_sso/qt/expander.py
