def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.uid_label = QLabel()
        self.open_individually_button = QPushButton('Open individually')
        self.open_individually_button.hide()
        self.open_individually_button.clicked.connect(self._open_individually)
        self.open_overplotted_button = QPushButton('Open over-plotted')
        self.open_overplotted_button.hide()
        self.open_overplotted_button.clicked.connect(self._open_overplotted)
        self.open_overplotted_on_button = QPushButton('Add to tab...')
        self.open_overplotted_on_button.hide()
        self.open_overplotted_on_button.setEnabled(False)
        self.open_overplotted_on_button.clicked.connect(self._open_overplotted_on)
        self.copy_uid_button = QPushButton('Copy UID to Clipboard')
        self.copy_uid_button.hide()
        self.copy_uid_button.clicked.connect(self._copy_uid)
        self.streams = QLabel()
        self.entries = []

        uid_layout = QHBoxLayout()
        uid_layout.addWidget(self.uid_label)
        uid_layout.addWidget(self.copy_uid_button)
        layout = QVBoxLayout()
        layout.addWidget(self.open_individually_button)
        layout.addWidget(self.open_overplotted_button)
        layout.addWidget(self.open_overplotted_on_button)
        layout.addLayout(uid_layout)
        layout.addWidget(self.streams)
        self.setLayout(layout)

        self._tab_titles = ()

    def __init__(self, parent=None, show_fullpath=True, fullpath_sorting=True,
                 show_all_files=True, show_comments=True):
        QWidget.__init__(self, parent)

        self.treewidget = OutlineExplorerTreeWidget(self,
                                            show_fullpath=show_fullpath,
                                            fullpath_sorting=fullpath_sorting,
                                            show_all_files=show_all_files,
                                            show_comments=show_comments)

        self.visibility_action = create_action(self,
                                           _("Show/hide outline explorer"),
                                           icon='outline_explorer_vis.png',
                                           toggled=self.toggle_visibility)
        self.visibility_action.setChecked(True)
        
        btn_layout = QHBoxLayout()
        btn_layout.setAlignment(Qt.AlignLeft)
        for btn in self.setup_buttons():
            btn_layout.addWidget(btn)

        layout = QVBoxLayout()
        layout.setContentsMargins(0, 0, 0, 0)
        layout.addLayout(btn_layout)
        layout.addWidget(self.treewidget)
        self.setLayout(layout)

    def setup_page(self):
        # Widgets
        self.table = ShortcutsTable(self)
        self.finder = ShortcutFinder(self.table, self.table.set_regex)
        self.table.finder = self.finder
        self.label_finder = QLabel(_('Search: '))
        self.reset_btn = QPushButton(_("Reset to default values"))

        # Layout
        hlayout = QHBoxLayout()
        vlayout = QVBoxLayout()
        hlayout.addWidget(self.label_finder)
        hlayout.addWidget(self.finder)
        vlayout.addWidget(self.table)
        vlayout.addLayout(hlayout)
        vlayout.addWidget(self.reset_btn)
        self.setLayout(vlayout)

        self.setTabOrder(self.table, self.finder)
        self.setTabOrder(self.finder, self.reset_btn)

        # Signals and slots
        if PYQT5:
            # Qt5 'dataChanged' has 3 parameters
            self.table.proxy_model.dataChanged.connect(
                lambda i1, i2, roles, opt='': self.has_been_modified(opt))
        else:
            self.table.proxy_model.dataChanged.connect(
                lambda i1, i2, opt='': self.has_been_modified(opt))
        self.reset_btn.clicked.connect(self.reset_to_default)

    def __init__(self, plugin, id_,
                 history_filename, config_options,
                 additional_options, interpreter_versions,
                 connection_file=None, hostname=None,
                 menu_actions=None, slave=False,
                 external_kernel=False, given_name=None):
        super(ClientWidget, self).__init__(plugin)
        SaveHistoryMixin.__init__(self, history_filename)

        # --- Init attrs
        self.id_ = id_
        self.connection_file = connection_file
        self.hostname = hostname
        self.menu_actions = menu_actions
        self.slave = slave
        self.given_name = given_name

        # --- Other attrs
        self.options_button = None
        self.stop_button = None
        self.stop_icon = ima.icon('stop')
        self.history = []
        self.allow_rename = True
        self.stderr_dir = None

        # --- Widgets
        self.shellwidget = ShellWidget(config=config_options,
                                       ipyclient=self,
                                       additional_options=additional_options,
                                       interpreter_versions=interpreter_versions,
                                       external_kernel=external_kernel,
                                       local_kernel=True)
        self.infowidget = WebView(self)
        self.set_infowidget_font()
        self.loading_page = self._create_loading_page()
        self._show_loading_page()

        # --- Layout
        vlayout = QVBoxLayout()
        toolbar_buttons = self.get_toolbar_buttons()
        hlayout = QHBoxLayout()
        for button in toolbar_buttons:
            hlayout.addWidget(button)
        vlayout.addLayout(hlayout)
        vlayout.setContentsMargins(0, 0, 0, 0)
        vlayout.addWidget(self.shellwidget)
        vlayout.addWidget(self.infowidget)
        self.setLayout(vlayout)

        # --- Exit function
        self.exit_callback = lambda: plugin.close_client(client=self)

        # --- Signals
        # As soon as some content is printed in the console, stop
        # our loading animation
        document = self.get_control().document()
        document.contentsChange.connect(self._hide_loading_page)

        # --- Dialog manager
        self.dialog_manager = DialogManager()

 def __init__(self, *args, **kwargs):
     super().__init__(*args, **kwargs)
     self.catalog_list = CatalogList()
     layout = QHBoxLayout()
     layout.addWidget(QLabel("Catalog:"))
     layout.addWidget(self.catalog_list)
     self.setLayout(layout)

    def __init__(self):
        QWidget.__init__(self)
        vlayout = QVBoxLayout()
        self.setLayout(vlayout)

        self.explorer = ProjectExplorerWidget(None, show_all=True)
        self.explorer.setup_project(osp.dirname(osp.abspath(__file__)))
        vlayout.addWidget(self.explorer)

        hlayout1 = QHBoxLayout()
        vlayout.addLayout(hlayout1)
        label = QLabel("<b>Open file:</b>")
        label.setAlignment(Qt.AlignRight)
        hlayout1.addWidget(label)
        self.label1 = QLabel()
        hlayout1.addWidget(self.label1)
        self.explorer.sig_open_file.connect(self.label1.setText)

        hlayout3 = QHBoxLayout()
        vlayout.addLayout(hlayout3)
        label = QLabel("<b>Option changed:</b>")
        label.setAlignment(Qt.AlignRight)
        hlayout3.addWidget(label)
        self.label3 = QLabel()
        hlayout3.addWidget(self.label3)
        self.explorer.sig_option_changed.connect(
           lambda x, y: self.label3.setText('option_changed: %r, %r' % (x, y)))

    def __init__(self, parent, plugin, tabs, data, icon):
        QDialog.__init__(self, parent)

        # Variables
        self.plugins_tabs = []
        self.plugins_data = []
        self.plugins_instances = []
        self.add_plugin(plugin, tabs, data, icon)
        self.plugin = None                # Last plugin with focus
        self.mode = self.FILE_MODE        # By default start in this mode
        self.initial_cursors = None       # {fullpath: QCursor}
        self.initial_path = None          # Fullpath of initial active editor
        self.initial_widget = None        # Initial active editor
        self.line_number = None           # Selected line number in filer
        self.is_visible = False           # Is the switcher visible?

        help_text = _("Press <b>Enter</b> to switch files or <b>Esc</b> to "
                      "cancel.<br><br>Type to filter filenames.<br><br>"
                      "Use <b>:number</b> to go to a line, e.g. "
                      "<b><code>main:42</code></b><br>"
                      "Use <b>@symbol_text</b> to go to a symbol, e.g. "
                      "<b><code>@init</code></b>"
                      "<br><br> Press <b>Ctrl+W</b> to close current tab.<br>")

        # Either allow searching for a line number or a symbol but not both
        regex = QRegExp("([A-Za-z0-9_]{0,100}@[A-Za-z0-9_]{0,100})|" +
                        "([A-Za-z0-9_]{0,100}:{0,1}[0-9]{0,100})")

        # Widgets
        self.edit = FilesFilterLine(self)
        self.help = HelperToolButton()
        self.list = QListWidget(self)
        self.filter = KeyPressFilter()
        regex_validator = QRegExpValidator(regex, self.edit)

        # Widgets setup
        self.setWindowFlags(Qt.Popup | Qt.FramelessWindowHint)
        self.setWindowOpacity(0.95)
        self.edit.installEventFilter(self.filter)
        self.edit.setValidator(regex_validator)
        self.help.setToolTip(help_text)
        self.list.setItemDelegate(HTMLDelegate(self))

        # Layout
        edit_layout = QHBoxLayout()
        edit_layout.addWidget(self.edit)
        edit_layout.addWidget(self.help)
        layout = QVBoxLayout()
        layout.addLayout(edit_layout)
        layout.addWidget(self.list)
        self.setLayout(layout)

        # Signals
        self.rejected.connect(self.restore_initial_state)
        self.filter.sig_up_key_pressed.connect(self.previous_row)
        self.filter.sig_down_key_pressed.connect(self.next_row)
        self.edit.returnPressed.connect(self.accept)
        self.edit.textChanged.connect(self.setup)
        self.list.itemSelectionChanged.connect(self.item_selection_changed)
        self.list.clicked.connect(self.edit.setFocus)

    def __init__(self, parent, model):
        super(AlgorithmMonitorDialog, self).__init__(parent)
        self.tree = QTreeWidget(self)
        self.tree.setColumnCount(3)
        self.tree.setSelectionMode(QTreeWidget.NoSelection)
        self.tree.setColumnWidth(0, 220)
        self.tree.setHeaderLabels(['Algorithm', 'Progress', ''])
        header = self.tree.header()
        header.setSectionResizeMode(1, QHeaderView.Stretch)
        header.setSectionResizeMode(2, QHeaderView.Fixed)
        header.setStretchLastSection(False)

        button_layout = QHBoxLayout()
        self.close_button = QPushButton('Close')
        button_layout.addStretch()
        button_layout.addWidget(self.close_button)

        layout = QVBoxLayout()
        layout.addWidget(self.tree)
        layout.addLayout(button_layout)
        self.setLayout(layout)

        self.setWindowTitle('Mantid - Algorithm progress')
        self.setWindowIcon(QIcon(":/MantidPlot_Icon_32offset.png"))
        self.resize(500, 300)

        self.presenter = AlgorithmProgressDialogPresenter(self, model)
        self.presenter.update_gui()

 def setup_ui(self):
     main = QHBoxLayout()
     sub = QVBoxLayout()
     for i in range(10):
         sub.addWidget(QLabel(str(i)))
     main.addLayout(sub)
     self.setLayout(main)

 def __init__(self, parent=None, logname=None, level=logging.NOTSET):
     QWidget.__init__(self, parent=parent)
     # Create Widgets
     self.label = QLabel('Minimum displayed log level: ', parent=self)
     self.combo = QComboBox(parent=self)
     self.text = QPlainTextEdit(parent=self)
     self.text.setReadOnly(True)
     self.clear_btn = QPushButton("Clear", parent=self)
     # Create layout
     layout = QVBoxLayout()
     level_control = QHBoxLayout()
     level_control.addWidget(self.label)
     level_control.addWidget(self.combo)
     layout.addLayout(level_control)
     layout.addWidget(self.text)
     layout.addWidget(self.clear_btn)
     self.setLayout(layout)
     # Allow QCombobox to control log level
     for log_level, value in LogLevels.as_dict().items():
         self.combo.addItem(log_level, value)
     self.combo.currentIndexChanged[str].connect(self.setLevel)
     # Allow QPushButton to clear log text
     self.clear_btn.clicked.connect(self.clear)
     # Create a handler with the default format
     self.handler = GuiHandler(level=level, parent=self)
     self.logFormat = self.default_format
     self.handler.message.connect(self.write)
     # Create logger. Either as a root or given logname
     self.log = None
     self.level = None
     self.logName = logname or ''
     self.logLevel = level
     self.destroyed.connect(functools.partial(logger_destroyed, self.log))

    def create_controls(self):
        """
        Create UI controls.
        """
        vbox = QVBoxLayout()

        form = QFormLayout()
        self.num_angle = QDoubleSpinBox()
        self.num_angle.setValue(0.0)
        self.num_angle.setMinimum(-360)
        self.num_angle.setMaximum(360)
        form.addRow(tr("Angle:"), self.num_angle)
        vbox.addLayout(form)

        self.gbo_preview = QGroupBox(tr("Preview"))
        self.gbo_preview.setCheckable(True)
        self.gbo_preview.setChecked(False)
        gbo_vbox = QVBoxLayout()
        self.chk_grid = QCheckBox(tr("Grid"))
        self.chk_grid.setChecked(False)
        self.num_grid = QSpinBox()
        self.num_grid.setValue(4)
        self.num_grid.setMinimum(1)
        self.num_grid.setEnabled(False)
        self.chk_grid.toggled[bool].connect(self.num_grid.setEnabled)
        gbo_vbox.addWidget(self.chk_grid)
        gbo_vbox.addWidget(self.num_grid)
        self.gbo_preview.setLayout(gbo_vbox)
        vbox.addWidget(self.gbo_preview)

        self.gbo_preview.toggled[bool].connect(self.set_preview)

        self.gbo_output = QGroupBox(tr("Output"))
        self.opt_new = QRadioButton(tr("New signal"))
        self.opt_replace = QRadioButton(tr("In place"))
        self.opt_new.setChecked(True)
        gbo_vbox2 = QVBoxLayout()
        gbo_vbox2.addWidget(self.opt_new)
        gbo_vbox2.addWidget(self.opt_replace)
        self.gbo_output.setLayout(gbo_vbox2)
        vbox.addWidget(self.gbo_output)

        self.chk_reshape = QCheckBox(tr("Resize to fit"))
        self.chk_reshape.setChecked(False)
        vbox.addWidget(self.chk_reshape)

        self.btn_ok = QPushButton(tr("&OK"))
        self.btn_ok.setDefault(True)
        self.btn_ok.clicked.connect(self.accept)
        self.btn_cancel = QPushButton(tr("&Cancel"))
        self.btn_cancel.clicked.connect(self.reject)
        hbox = QHBoxLayout()
        hbox.addWidget(self.btn_ok)
        hbox.addWidget(self.btn_cancel)
        vbox.addLayout(hbox)

        vbox.addStretch(1)
        self.setLayout(vbox)

 def __init__(self, color, parent=None):
     QHBoxLayout.__init__(self)
     assert isinstance(color, QColor)
     self.lineedit = QLineEdit(color.name(), parent)
     self.lineedit.textChanged.connect(self.update_color)
     self.addWidget(self.lineedit)
     self.colorbtn = ColorButton(parent)
     self.colorbtn.color = color
     self.colorbtn.colorChanged.connect(self.update_text)
     self.addWidget(self.colorbtn)

    def __init__(self, parent,
                 search_text = r"# ?TODO|# ?FIXME|# ?XXX",
                 search_text_regexp=True, search_path=None,
                 include=[".", ".py"], include_idx=None, include_regexp=True,
                 exclude=r"\.pyc$|\.orig$|\.hg|\.svn", exclude_idx=None,
                 exclude_regexp=True,
                 supported_encodings=("utf-8", "iso-8859-1", "cp1252"),
                 in_python_path=False, more_options=False):
        QWidget.__init__(self, parent)
        
        self.setWindowTitle(_('Find in files'))

        self.search_thread = None
        self.get_pythonpath_callback = None
        
        self.find_options = FindOptions(self, search_text, search_text_regexp,
                                        search_path,
                                        include, include_idx, include_regexp,
                                        exclude, exclude_idx, exclude_regexp,
                                        supported_encodings, in_python_path,
                                        more_options)
        self.find_options.find.connect(self.find)
        self.find_options.stop.connect(self.stop_and_reset_thread)
        
        self.result_browser = ResultsBrowser(self)
        
        collapse_btn = create_toolbutton(self)
        collapse_btn.setDefaultAction(self.result_browser.collapse_all_action)
        expand_btn = create_toolbutton(self)
        expand_btn.setDefaultAction(self.result_browser.expand_all_action)
        restore_btn = create_toolbutton(self)
        restore_btn.setDefaultAction(self.result_browser.restore_action)
#        collapse_sel_btn = create_toolbutton(self)
#        collapse_sel_btn.setDefaultAction(
#                                self.result_browser.collapse_selection_action)
#        expand_sel_btn = create_toolbutton(self)
#        expand_sel_btn.setDefaultAction(
#                                self.result_browser.expand_selection_action)
        
        btn_layout = QVBoxLayout()
        btn_layout.setAlignment(Qt.AlignTop)
        for widget in [collapse_btn, expand_btn, restore_btn]:
#                       collapse_sel_btn, expand_sel_btn]:
            btn_layout.addWidget(widget)
        
        hlayout = QHBoxLayout()
        hlayout.addWidget(self.result_browser)
        hlayout.addLayout(btn_layout)
        
        layout = QVBoxLayout()
        left, _x, right, bottom = layout.getContentsMargins()
        layout.setContentsMargins(left, 0, right, bottom)
        layout.addWidget(self.find_options)
        layout.addLayout(hlayout)
        self.setLayout(layout)

    def __init__(self, editor):
        Panel.__init__(self, editor)
        self._editor = editor
        self._editor.sig_cursor_position_changed.connect(
            self._handle_cursor_position_change_event
        )

        # The layout
        hbox = QHBoxLayout()
        self.class_cb = QComboBox()
        self.method_cb = QComboBox()
        hbox.addWidget(self.class_cb)
        hbox.addWidget(self.method_cb)
        hbox.setSpacing(0)
        hbox.setContentsMargins(0, 0, 0, 0)

        self.setLayout(hbox)

        # Internal data
        self.folds = None
        self.parents = None
        self.classes = None
        self.funcs = None

        # Initial data for the dropdowns.
        self.class_cb.addItem("<None>", 0)
        self.method_cb.addItem("<None>", 0)

        # Attach some events.
        self.class_cb.activated.connect(self.combobox_activated)
        self.method_cb.activated.connect(self.combobox_activated)

 def create_combobox(self, text, choices, option, default=NoDefault,
                     tip=None, restart=False):
     """choices: couples (name, key)"""
     label = QLabel(text)
     combobox = QComboBox()
     if tip is not None:
         combobox.setToolTip(tip)
     for name, key in choices:
         if not (name is None and key is None):
             combobox.addItem(name, to_qvariant(key))
     # Insert separators
     count = 0
     for index, item in enumerate(choices):
         name, key = item
         if name is None and key is None:
             combobox.insertSeparator(index + count)
             count += 1
     self.comboboxes[combobox] = (option, default)
     layout = QHBoxLayout()
     layout.addWidget(label)
     layout.addWidget(combobox)
     layout.addStretch(1)
     layout.setContentsMargins(0, 0, 0, 0)
     widget = QWidget(self)
     widget.label = label
     widget.combobox = combobox
     widget.setLayout(layout)
     combobox.restart_required = restart
     combobox.label_text = text
     return widget

    def __init__(self, parent):
        QFileDialog.__init__(self, parent)
        self.setFileMode(QFileDialog.AnyFile)
        self.setAcceptMode(QFileDialog.AcceptSave)

        # Widgets
        self._chk_tight = QCheckBox('Tight layout')

        self._txt_dpi = QSpinBox()
        self._txt_dpi.setRange(1, 10000)
        self._txt_dpi.setSingleStep(50)
        self._txt_dpi.setSuffix('dpi')
        self._txt_dpi.setValue(100)

        # Layouts
        layout = self.layout()

        lyt_extras = QHBoxLayout()
        lyt_extras.addWidget(QLabel('Extra options'))
        lyt_extras.addWidget(self._chk_tight)
        lyt_extras.addWidget(QLabel('Resolution'))
        lyt_extras.addWidget(self._txt_dpi)
        layout.addLayout(lyt_extras, layout.rowCount(), 0, 1, layout.columnCount())

        self.setLayout(layout)

    def __init__(self, parent):
        QWidget.__init__(self, parent)

        self.status_text = QLabel(self)
        self.spinner = QWaitingSpinner(self, centerOnParent=False)
        self.spinner.setNumberOfLines(12)
        self.spinner.setInnerRadius(2)
        layout = QHBoxLayout()
        layout.addWidget(self.spinner)
        layout.addWidget(self.status_text)
        self.setLayout(layout)

 def add_button_box(self, stdbtns):
     """Create dialog button box and add it to the dialog layout"""
     bbox = QDialogButtonBox(stdbtns)
     run_btn = bbox.addButton(_("Run"), QDialogButtonBox.AcceptRole)
     run_btn.clicked.connect(self.run_btn_clicked)
     bbox.accepted.connect(self.accept)
     bbox.rejected.connect(self.reject)
     btnlayout = QHBoxLayout()
     btnlayout.addStretch(1)
     btnlayout.addWidget(bbox)
     self.layout().addLayout(btnlayout)

    def __init__(self, plugin, name, history_filename, config_options,
                 additional_options, interpreter_versions,
                 connection_file=None, hostname=None,
                 menu_actions=None, slave=False):
        super(ClientWidget, self).__init__(plugin)
        SaveHistoryMixin.__init__(self)

        # --- Init attrs
        self.name = name
        self.history_filename = get_conf_path(history_filename)
        self.connection_file = connection_file
        self.hostname = hostname
        self.menu_actions = menu_actions
        self.slave = slave

        # --- Other attrs
        self.options_button = None
        self.stop_button = None
        self.stop_icon = ima.icon('stop')
        self.history = []

        # --- Widgets
        self.shellwidget = ShellWidget(config=config_options,
                                       additional_options=additional_options,
                                       interpreter_versions=interpreter_versions,
                                       local_kernel=True)
        self.shellwidget.hide()
        self.infowidget = WebView(self)
        self.set_infowidget_font()
        self.loading_page = self._create_loading_page()
        self.infowidget.setHtml(self.loading_page,
                                QUrl.fromLocalFile(CSS_PATH))

        # --- Layout
        vlayout = QVBoxLayout()
        toolbar_buttons = self.get_toolbar_buttons()
        hlayout = QHBoxLayout()
        for button in toolbar_buttons:
            hlayout.addWidget(button)
        vlayout.addLayout(hlayout)
        vlayout.setContentsMargins(0, 0, 0, 0)
        vlayout.addWidget(self.shellwidget)
        vlayout.addWidget(self.infowidget)
        self.setLayout(vlayout)

        # --- Exit function
        self.exit_callback = lambda: plugin.close_client(client=self)

        # --- Signals
        # As soon as some content is printed in the console, stop
        # our loading animation
        document = self.get_control().document()
        document.contentsChange.connect(self._stop_loading_animation)

    def __init__(self, parent, statusbar):
        QWidget.__init__(self, parent)

        self.label_font = font = get_font(option='rich_font')
        font.setPointSize(self.font().pointSize())
        font.setBold(True)

        layout = QHBoxLayout()
        layout.setContentsMargins(0, 0, 0, 0)
        self.setLayout(layout)

        statusbar.addPermanentWidget(self)