def save_data(self, filename=None):
     """Save data"""
     if filename is None:
         filename = self.filename
         if filename is None:
             filename = getcwd()
         filename, _selfilter = getsavefilename(self, _("Save data"),
                                                filename,
                                                iofunctions.save_filters)
         if filename:
             self.filename = filename
         else:
             return False
     QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
     QApplication.processEvents()
     if self.is_internal_shell:
         wsfilter = self.get_internal_shell_filter('picklable',
                                                   check_all=True)
         namespace = wsfilter(self.shellwidget.interpreter.namespace).copy()
         error_message = iofunctions.save(namespace, filename)
     else:
         settings = self.get_view_settings()
         error_message = monitor_save_globals(self._get_sock(),
                                              settings, filename)
     QApplication.restoreOverrideCursor()
     QApplication.processEvents()
     if error_message is not None:
         QMessageBox.critical(self, _("Save data"),
                         _("<b>Unable to save current workspace</b>"
                           "<br><br>Error message:<br>%s") % error_message)
     self.save_button.setEnabled(self.filename is not None)

 def __init__(self, parent):
     QWebView.__init__(self, parent)
     self.zoom_factor = 1.0
     self.zoom_out_action = create_action(
         self, _("Zoom out"), icon=get_icon("zoom_out.png"), triggered=self.zoom_out
     )
     self.zoom_in_action = create_action(self, _("Zoom in"), icon=get_icon("zoom_in.png"), triggered=self.zoom_in)

    def setup(self, fname):
        """Setup Run Configuration dialog with filename *fname*"""
        combo_label = QLabel(_("Select a run configuration:"))
        self.combo = QComboBox()
        self.combo.setMaxVisibleItems(20)
        self.combo.setSizeAdjustPolicy(QComboBox.AdjustToMinimumContentsLength)
        self.combo.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
        
        self.stack = QStackedWidget()

        configurations = _get_run_configurations()
        for index, (filename, options) in enumerate(configurations):
            if fname == filename:
                break
        else:
            # There is no run configuration for script *fname*:
            # creating a temporary configuration that will be kept only if
            # dialog changes are accepted by the user
            configurations.insert(0, (fname, RunConfiguration(fname).get()))
            index = 0
        for filename, options in configurations:
            widget = RunConfigOptions(self)
            widget.set(options)
            self.combo.addItem(filename)
            self.stack.addWidget(widget)
        self.connect(self.combo, SIGNAL("currentIndexChanged(int)"),
                     self.stack.setCurrentIndex)
        self.combo.setCurrentIndex(index)

        self.add_widgets(combo_label, self.combo, 10, self.stack)
        self.add_button_box(QDialogButtonBox.Ok|QDialogButtonBox.Cancel)

        self.setWindowTitle(_("Run Settings"))

 def delete_file(self, fname, multiple, yes_to_all):
     """Delete file"""
     if multiple:
         buttons = QMessageBox.Yes|QMessageBox.YesAll| \
                   QMessageBox.No|QMessageBox.Cancel
     else:
         buttons = QMessageBox.Yes|QMessageBox.No
     if yes_to_all is None:
         answer = QMessageBox.warning(self, _("Delete"),
                              _("Do you really want "
                                "to delete <b>%s</b>?"
                                ) % osp.basename(fname), buttons)
         if answer == QMessageBox.No:
             return yes_to_all
         elif answer == QMessageBox.Cancel:
             return False
         elif answer == QMessageBox.YesAll:
             yes_to_all = True
     try:
         if osp.isfile(fname):
             misc.remove_file(fname)
             self.parent_widget.removed.emit(fname)
         else:
             self.remove_tree(fname)
             self.parent_widget.removed_tree.emit(fname)
         return yes_to_all
     except EnvironmentError as error:
         action_str = _('delete')
         QMessageBox.critical(self, _("Project Explorer"),
                         _("<b>Unable to %s <i>%s</i></b>"
                           "<br><br>Error message:<br>%s"
                           ) % (action_str, fname, to_text_string(error)))
     return False

 def remove_path(self):
     answer = QMessageBox.warning(self, _("Remove path"),
         _("Do you really want to remove selected path?"),
         QMessageBox.Yes | QMessageBox.No)
     if answer == QMessageBox.Yes:
         self.pathlist.pop(self.listwidget.currentRow())
         self.update_list()

 def set_user_env(reg, parent=None):
     """Set HKCU (current user) environment variables"""
     reg = listdict2envdict(reg)
     types = dict()
     key = winreg.OpenKey(winreg.HKEY_CURRENT_USER, "Environment")
     for name in reg:
         try:
             _x, types[name] = winreg.QueryValueEx(key, name)
         except WindowsError:
             types[name] = winreg.REG_EXPAND_SZ
     key = winreg.OpenKey(winreg.HKEY_CURRENT_USER, "Environment", 0,
                          winreg.KEY_SET_VALUE)
     for name in reg:
         winreg.SetValueEx(key, name, 0, types[name], reg[name])
     try:
         from win32gui import SendMessageTimeout
         from win32con import (HWND_BROADCAST, WM_SETTINGCHANGE,
                               SMTO_ABORTIFHUNG)
         SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, 0,
                            "Environment", SMTO_ABORTIFHUNG, 5000)
     except ImportError:
         QMessageBox.warning(parent, _("Warning"),
                     _("Module <b>pywin32 was not found</b>.<br>"
                       "Please restart this Windows <i>session</i> "
                       "(not the computer) for changes to take effect."))

 def _set_step(self, step):
     """Proceed to a given step"""
     new_tab = self.tab_widget.currentIndex() + step
     assert new_tab < self.tab_widget.count() and new_tab >= 0
     if new_tab == self.tab_widget.count()-1:
         try:
             self.table_widget.open_data(self._get_plain_text(),
                                     self.text_widget.get_col_sep(),
                                     self.text_widget.get_row_sep(),
                                     self.text_widget.trnsp_box.isChecked(),
                                     self.text_widget.get_skiprows(),
                                     self.text_widget.get_comments())
             self.done_btn.setEnabled(True)
             self.done_btn.setDefault(True)
             self.fwd_btn.setEnabled(False)
             self.back_btn.setEnabled(True)
         except (SyntaxError, AssertionError) as error:
             QMessageBox.critical(self, _("Import wizard"),
                         _("<b>Unable to proceed to next step</b>"
                           "<br><br>Please check your entries."
                           "<br><br>Error message:<br>%s") % str(error))
             return
     elif new_tab == 0:
         self.done_btn.setEnabled(False)
         self.fwd_btn.setEnabled(True)
         self.back_btn.setEnabled(False)
     self._focus_tab(new_tab)

    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
        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 show_docstring(self, text, call=False, force=False):
     """Show docstring or arguments"""
     text = unicode(text) # Useful only for ExternalShellBase
     
     insp_enabled = self.inspector_enabled or force
     if force and self.inspector is not None:
         self.inspector.dockwidget.setVisible(True)
         self.inspector.dockwidget.raise_()
     if insp_enabled and (self.inspector is not None) and \
        (self.inspector.dockwidget.isVisible()):
         # ObjectInspector widget exists and is visible
         self.inspector.set_shell(self)
         self.inspector.set_object_text(text, ignore_unknown=True)
         self.setFocus() # if inspector was not at top level, raising it to
                         # top will automatically give it focus because of
                         # the visibility_changed signal, so we must give
                         # focus back to shell
         if call and self.calltips:
             # Display argument list if this is function call
             iscallable = self.iscallable(text)
             if iscallable is not None:
                 if iscallable:
                     arglist = self.get_arglist(text)
                     if isinstance(arglist, bool):
                         arglist = []
                     if arglist:
                         self.show_calltip(_("Arguments"),
                                           arglist, '#129625')
     elif self.calltips: # inspector is not visible or link is disabled
         doc = self.get__doc__(text)
         if doc is not None:
             self.show_calltip(_("Documentation"), doc)

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

        vert_layout = QVBoxLayout()

        # Type frame
        type_layout = QHBoxLayout()
        type_label = QLabel(_("Import as"))
        type_layout.addWidget(type_label)

        self.array_btn = array_btn = QRadioButton(_("array"))
        array_btn.setEnabled(ndarray is not FakeObject)
        array_btn.setChecked(ndarray is not FakeObject)
        type_layout.addWidget(array_btn)

        list_btn = QRadioButton(_("list"))
        list_btn.setChecked(not array_btn.isChecked())
        type_layout.addWidget(list_btn)

        if pd:
            self.df_btn = df_btn = QRadioButton(_("DataFrame"))
            df_btn.setChecked(False)
            type_layout.addWidget(df_btn)

        h_spacer = QSpacerItem(40, 20,
                               QSizePolicy.Expanding, QSizePolicy.Minimum)
        type_layout.addItem(h_spacer)
        type_frame = QFrame()
        type_frame.setLayout(type_layout)

        self._table_view = PreviewTable(self)
        vert_layout.addWidget(type_frame)
        vert_layout.addWidget(self._table_view)
        self.setLayout(vert_layout)

 def __init__(self, value, parent=None):
     QGridLayout.__init__(self)
     font = tuple_to_qfont(value)
     assert font is not None
     
     # Font family
     self.family = QFontComboBox(parent)
     self.family.setCurrentFont(font)
     self.addWidget(self.family, 0, 0, 1, -1)
     
     # Font size
     self.size = QComboBox(parent)
     self.size.setEditable(True)
     sizelist = list(range(6, 12)) + list(range(12, 30, 2)) + [36, 48, 72]
     size = font.pointSize()
     if size not in sizelist:
         sizelist.append(size)
         sizelist.sort()
     self.size.addItems([str(s) for s in sizelist])
     self.size.setCurrentIndex(sizelist.index(size))
     self.addWidget(self.size, 1, 0)
     
     # Italic or not
     self.italic = QCheckBox(_("Italic"), parent)
     self.italic.setChecked(font.italic())
     self.addWidget(self.italic, 1, 1)
     
     # Bold or not
     self.bold = QCheckBox(_("Bold"), parent)
     self.bold.setChecked(font.bold())
     self.addWidget(self.bold, 1, 2)

 def change_history_depth(self):
     "Change history max entries" ""
     depth, valid = QInputDialog.getInteger(
         self, _("History"), _("Maximum entries"), self.get_option("max_entries"), 10, 10000
     )
     if valid:
         self.set_option("max_entries", depth)

 def get_arguments(self):
     arguments, valid = QInputDialog.getText(
         self, _("Arguments"), _("Command line arguments:"), QLineEdit.Normal, self.arguments
     )
     if valid:
         self.arguments = to_text_string(arguments)
     return valid

    def update_warning(self, warning_type=NO_WARNING, conflicts=[]):
        """Update warning label to reflect conflict status of new shortcut"""
        if warning_type == NO_WARNING:
            warn = False
            tip = 'This shortcut is correct!'
        elif warning_type == SEQUENCE_CONFLICT:
            template = '<i>{0}<b>{1}</b></i>'
            tip_title = _('The new shorcut conflicts with:') + '<br>'
            tip_body = ''
            for s in conflicts:
                tip_body += ' - {0}: {1}<br>'.format(s.context, s.name)
            tip_body = tip_body[:-4]  # Removing last <br>
            tip = template.format(tip_title, tip_body)
            warn = True
        elif warning_type == SEQUENCE_LENGTH:
            # Sequences with 5 keysequences (i.e. Ctrl+1, Ctrl+2, Ctrl+3,
            # Ctrl+4, Ctrl+5) are invalid
            template = '<i>{0}</i>'
            tip = _('A compound sequence can have {break} a maximum of '
                    '4 subsequences.{break}').format(**{'break': '<br>'})
            warn = True
        elif warning_type == INVALID_KEY:
            template = '<i>{0}</i>'
            tip = _('Invalid key entered') + '<br>'
            warn = True

        self.helper_button.show()
        if warn:
            self.label_warning.show()
            self.helper_button.setIcon(get_std_icon('MessageBoxWarning'))
            self.button_ok.setEnabled(False)
        else:
            self.helper_button.setIcon(get_std_icon('DialogApplyButton'))

        self.label_warning.setText(tip)

 def setup_bottom_toolbar(self, layout, sync=True):
     toolbar = []
     add_button = create_toolbutton(
         self, text=_("Add path"), icon=get_icon("edit_add.png"), triggered=self.add_path, text_beside_icon=True
     )
     toolbar.append(add_button)
     remove_button = create_toolbutton(
         self,
         text=_("Remove path"),
         icon=get_icon("edit_remove.png"),
         triggered=self.remove_path,
         text_beside_icon=True,
     )
     toolbar.append(remove_button)
     self.selection_widgets.append(remove_button)
     self._add_widgets_to_layout(layout, toolbar)
     layout.addStretch(1)
     if os.name == "nt" and sync:
         self.sync_button = create_toolbutton(
             self,
             text=_("Synchronize..."),
             icon=get_icon("synchronize.png"),
             triggered=self.synchronize,
             tip=_("Synchronize Spyder's path list with PYTHONPATH " "environment variable"),
             text_beside_icon=True,
         )
         layout.addWidget(self.sync_button)
     return toolbar

    def get_toolbar_buttons(self):
        """Return toolbar buttons list"""
        #TODO: Eventually add some buttons (Empty for now)
        # (see for example: spyderlib/widgets/externalshell/baseshell.py)
        buttons = []
        # Code to add the stop button 
        if self.stop_button is None:
            self.stop_button = create_toolbutton(self, text=_("Stop"),
                                             icon=self.stop_icon,
                                             tip=_("Stop the current command"))
            self.disable_stop_button()
            # set click event handler
            self.stop_button.clicked.connect(self.stop_button_click_handler)
        if self.stop_button is not None:
            buttons.append(self.stop_button)
            
        if self.options_button is None:
            options = self.get_options_menu()
            if options:
                self.options_button = create_toolbutton(self,
                        text=_('Options'), icon=ima.icon('tooloptions'))
                self.options_button.setPopupMode(QToolButton.InstantPopup)
                menu = QMenu(self)
                add_actions(menu, options)
                self.options_button.setMenu(menu)
        if self.options_button is not None:
            buttons.append(self.options_button)

        return buttons

 def get_toolbar_buttons(self):
     if self.run_button is None:
         self.run_button = create_toolbutton(self, text=_("Run"),
                                          icon=get_icon('run.png'),
                                          tip=_("Run again this program"),
                                          triggered=self.start_shell)
     if self.kill_button is None:
         self.kill_button = create_toolbutton(self, text=_("Kill"),
                                  icon=get_icon('kill.png'),
                                  tip=_("Kills the current process, "
                                        "causing it to exit immediately"))
     buttons = [self.run_button]
     if self.options_button is None:
         options = self.get_options_menu()
         if options:
             self.options_button = create_toolbutton(self, text=_("Options"),
                                         icon=get_icon('tooloptions.png'))
             self.options_button.setPopupMode(QToolButton.InstantPopup)
             menu = QMenu(self)
             add_actions(menu, options)
             self.options_button.setMenu(menu)
     if self.options_button is not None:
         buttons.append(self.options_button)
     buttons.append(self.kill_button)
     return buttons

 def synchronize(self):
     """
     Synchronize Spyder's path list with PYTHONPATH environment variable
     Only apply to: current user, on Windows platforms
     """
     answer = QMessageBox.question(self, _("Synchronize"),
         _("This will synchronize Spyder's path list with "
                 "<b>PYTHONPATH</b> environment variable for current user, "
                 "allowing you to run your Python modules outside Spyder "
                 "without having to configure sys.path. "
                 "<br>Do you want to clear contents of PYTHONPATH before "
                 "adding Spyder's path list?"),
         QMessageBox.Yes | QMessageBox.No | QMessageBox.Cancel)
     if answer == QMessageBox.Cancel:
         return
     elif answer == QMessageBox.Yes:
         remove = True
     else:
         remove = False
     from spyderlib.utils.environ import (get_user_env, set_user_env,
                                          listdict2envdict)
     env = get_user_env()
     if remove:
         ppath = self.pathlist+self.ro_pathlist
     else:
         ppath = env.get('PYTHONPATH', [])
         if not isinstance(ppath, list):
             ppath = [ppath]
         ppath = [path for path in ppath
                  if path not in (self.pathlist+self.ro_pathlist)]
         ppath.extend(self.pathlist+self.ro_pathlist)
     env['PYTHONPATH'] = ppath
     set_user_env( listdict2envdict(env), parent=self )

 def get_toolbar_buttons(self):
     ExternalShellBase.get_toolbar_buttons(self)
     if self.namespacebrowser_button is None and self.stand_alone is not None:
         self.namespacebrowser_button = create_toolbutton(
             self,
             text=_("Variables"),
             icon=get_icon("dictedit.png"),
             tip=_("Show/hide global variables explorer"),
             toggled=self.toggle_globals_explorer,
             text_beside_icon=True,
         )
     if self.terminate_button is None:
         self.terminate_button = create_toolbutton(
             self,
             text=_("Terminate"),
             icon=get_icon("stop.png"),
             tip=_(
                 "Attempts to stop the process. The process\n"
                 "may not exit as a result of clicking this\n"
                 "button (it is given the chance to prompt\n"
                 "the user for any unsaved files, etc)."
             ),
         )
     buttons = []
     if self.namespacebrowser_button is not None:
         buttons.append(self.namespacebrowser_button)
     buttons += [self.run_button, self.terminate_button, self.kill_button, self.options_button]
     return buttons

 def setup_top_toolbar(self, layout):
     toolbar = []
     movetop_button = create_toolbutton(self,
                                 text=_("Move to top"),
                                 icon=get_icon('2uparrow.png'),
                                 triggered=lambda: self.move_to(absolute=0),
                                 text_beside_icon=True)
     toolbar.append(movetop_button)
     moveup_button = create_toolbutton(self,
                                 text=_("Move up"),
                                 icon=get_icon('1uparrow.png'),
                                 triggered=lambda: self.move_to(relative=-1),
                                 text_beside_icon=True)
     toolbar.append(moveup_button)
     movedown_button = create_toolbutton(self,
                                 text=_("Move down"),
                                 icon=get_icon('1downarrow.png'),
                                 triggered=lambda: self.move_to(relative=1),
                                 text_beside_icon=True)
     toolbar.append(movedown_button)
     movebottom_button = create_toolbutton(self,
                                 text=_("Move to bottom"),
                                 icon=get_icon('2downarrow.png'),
                                 triggered=lambda: self.move_to(absolute=1),
                                 text_beside_icon=True)
     toolbar.append(movebottom_button)
     self.selection_widgets.extend(toolbar)
     self._add_widgets_to_layout(layout, toolbar)
     return toolbar