def keyPressEvent(self, event):
     """Handle key press events"""
     if event.key() == Qt.Key_Return or event.key() == Qt.Key_Enter:
         if self.add_current_text_if_valid():
             self.selected()
     else:
         QComboBox.keyPressEvent(self, event)

class FormComboWidget(QWidget):
    update_buttons = Signal()
    
    def __init__(self, datalist, comment="", parent=None):
        QWidget.__init__(self, parent)
        layout = QVBoxLayout()
        self.setLayout(layout)
        self.combobox = QComboBox()
        layout.addWidget(self.combobox)
        
        self.stackwidget = QStackedWidget(self)
        layout.addWidget(self.stackwidget)
        self.combobox.currentIndexChanged.connect(
                                              self.stackwidget.setCurrentIndex)
        
        self.widgetlist = []
        for data, title, comment in datalist:
            self.combobox.addItem(title)
            widget = FormWidget(data, comment=comment, parent=self)
            self.stackwidget.addWidget(widget)
            self.widgetlist.append(widget)
            
    def setup(self):
        for widget in self.widgetlist:
            widget.setup()

    def get(self):
        return [ widget.get() for widget in self.widgetlist]

 def keyPressEvent(self, event):
     """Handle key press events"""
     if event.key() == Qt.Key_Return or event.key() == Qt.Key_Enter:
         valid = self.is_valid(self.currentText())
         if valid or valid is None:
             self.add_current_text()
     else:
         QComboBox.keyPressEvent(self, event)

    def focusOutEvent(self, event):
        """Handle focus out event restoring the last valid selected path."""
        # Calling asynchronously the 'add_current_text' to avoid crash
        # https://groups.google.com/group/spyderlib/browse_thread/thread/2257abf530e210bd
        lineedit = self.lineEdit()
        QTimer.singleShot(50, lambda: lineedit.setText(self.selected_text))

        hide_status = getattr(self.lineEdit(), 'hide_status_icon', None)
        if hide_status:
            hide_status()
        QComboBox.focusOutEvent(self, event)

    def keyPressEvent(self, event):
        """Qt Override.

        Handle key press events.
        """
        if event.key() == Qt.Key_Return or event.key() == Qt.Key_Enter:
            if self.add_current_text_if_valid():
                self.selected()
                self.hide_completer()
        elif event.key() == Qt.Key_Escape:
            self.set_current_text(self.selected_text)
            self.hide_completer()
        else:
            QComboBox.keyPressEvent(self, event)

 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 __init__(self, parent, order):
        super(LayoutSaveDialog, self).__init__(parent)

        # variables
        self._parent = parent

        # widgets
        self.combo_box = QComboBox(self)
        self.combo_box.addItems(order)
        self.combo_box.setEditable(True)
        self.combo_box.clearEditText()
        self.button_box = QDialogButtonBox(QDialogButtonBox.Ok |
                                           QDialogButtonBox.Cancel,
                                           Qt.Horizontal, self)
        self.button_ok = self.button_box.button(QDialogButtonBox.Ok)
        self.button_cancel = self.button_box.button(QDialogButtonBox.Cancel)

        # widget setup
        self.button_ok.setEnabled(False)
        self.dialog_size = QSize(300, 100)
        self.setWindowTitle('Save layout as')
        self.setModal(True)
        self.setMinimumSize(self.dialog_size)
        self.setFixedSize(self.dialog_size)

        # layouts
        self.layout = QVBoxLayout()
        self.layout.addWidget(self.combo_box)
        self.layout.addWidget(self.button_box)
        self.setLayout(self.layout)

        # signals and slots
        self.button_box.accepted.connect(self.accept)
        self.button_box.rejected.connect(self.close)
        self.combo_box.editTextChanged.connect(self.check_text)

    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 create_combobox(self, text, choices, option, default=NoDefault,
                     tip=None):
     """choices: couples (name, key)"""
     label = QLabel(text)
     combobox = QComboBox()
     if tip is not None:
         combobox.setToolTip(tip)
     for name, key in choices:
         combobox.addItem(name, to_qvariant(key))
     self.comboboxes[combobox] = (option, default)
     layout = QHBoxLayout()
     for subwidget in (label, combobox):
         layout.addWidget(subwidget)
     layout.addStretch(1)
     layout.setContentsMargins(0, 0, 0, 0)
     widget = QWidget(self)
     widget.setLayout(layout)
     return widget

    def event(self, event):
        """Qt Override.

        Filter tab keys and process double tab keys.
        """
        if (event.type() == QEvent.KeyPress) and (event.key() == Qt.Key_Tab):
            self.sig_tab_pressed.emit(True)
            self.numpress += 1
            if self.numpress == 1:
                self.presstimer = QTimer.singleShot(400, self.handle_keypress)
            return True
        return QComboBox.event(self, event)

 def createEditor(self, parent, option, index):
     if index.column() in (MOD1, MOD2, MOD3):
         combobox = QComboBox(parent)
         combobox.addItems(self.modifiers)
         return combobox
     elif index.column() == KEY:
         combobox = QComboBox(parent)
         combobox.addItems(self.keys)
         return combobox
     else:
         return QItemDelegate.createEditor(self, parent, option, index)

    def __init__(self, parent=None):
        QDialog.__init__(self, parent)
        SizeMixin.__init__(self)

        # Destroying the C++ object right after closing the dialog box,
        # otherwise it may be garbage-collected in another QThread
        # (e.g. the editor's analysis thread in Spyder), thus leading to
        # a segmentation fault on UNIX or an application crash on Windows
        self.setAttribute(Qt.WA_DeleteOnClose)

        self.file_to_run = None

        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()

        bbox = QDialogButtonBox(QDialogButtonBox.Ok | QDialogButtonBox.Cancel)
        run_btn = bbox.addButton(_("Run"), QDialogButtonBox.AcceptRole)
        self.connect(run_btn, SIGNAL("clicked()"), self.run_btn_clicked)
        self.connect(bbox, SIGNAL("accepted()"), SLOT("accept()"))
        self.connect(bbox, SIGNAL("rejected()"), SLOT("reject()"))

        btnlayout = QHBoxLayout()
        btnlayout.addStretch(1)
        btnlayout.addWidget(bbox)

        layout = QVBoxLayout()
        layout.addWidget(combo_label)
        layout.addWidget(self.combo)
        layout.addSpacing(10)
        layout.addWidget(self.stack)
        layout.addLayout(btnlayout)
        self.setLayout(layout)

        self.setWindowTitle(_("Run configurations"))
        self.setWindowIcon(get_icon("run.png"))

class FontLayout(QGridLayout):
    """Font selection"""
    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 = range(6, 12) + 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 get_font(self):
        font = self.family.currentFont()
        font.setItalic(self.italic.isChecked())
        font.setBold(self.bold.isChecked())
        font.setPointSize(int(self.size.currentText()))
        return qfont_to_tuple(font)

 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:
         combobox.addItem(name, to_qvariant(key))
     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

class FadingTipBox(FadingDialog):
    """ """
    def __init__(self, parent, opacity, duration, easing_curve):
        super(FadingTipBox, self).__init__(parent, opacity, duration,
                                           easing_curve)
        self.holder = self.anim  # needed for qt to work
        self.parent = parent

        self.frames = None
        self.color_top = QColor.fromRgb(230, 230, 230)
        self.color_back = QColor.fromRgb(255, 255, 255)
        self.offset_shadow = 0
        self.fixed_width = 300

        self.key_pressed = None

        self.setAttribute(Qt.WA_TranslucentBackground)
        self.setWindowFlags(Qt.Dialog | Qt.FramelessWindowHint |
                            Qt.WindowStaysOnTopHint)
        self.setModal(False)

        # Widgets
        self.button_home = QPushButton("<<")
        self.button_close = QPushButton("X")
        self.button_previous = QPushButton(" < ")
        self.button_end = QPushButton(">>")
        self.button_next = QPushButton(" > ")
        self.button_run = QPushButton(_('Run code'))
        self.button_disable = None
        self.button_current = QToolButton()
        self.label_image = QLabel()

        self.label_title = QLabel()
        self.combo_title = QComboBox()
        self.label_current = QLabel()
        self.label_content = QLabel()

        self.label_content.setMinimumWidth(self.fixed_width)
        self.label_content.setMaximumWidth(self.fixed_width)

        self.label_current.setAlignment(Qt.AlignCenter)

        self.label_content.setWordWrap(True)

        self.widgets = [self.label_content, self.label_title,
                        self.label_current, self.combo_title,
                        self.button_close, self.button_run, self.button_next,
                        self.button_previous, self.button_end,
                        self.button_home, self.button_current]

        arrow = get_image_path('hide.png')

        self.stylesheet = '''QPushButton {
                             background-color: rgbs(200,200,200,100%);
                             color: rgbs(0,0,0,100%);
                             border-style: outset;
                             border-width: 1px;
                             border-radius: 3px;
                             border-color: rgbs(100,100,100,100%);
                             padding: 2px;
                             }

                             QPushButton:hover {
                             background-color: rgbs(150, 150, 150, 100%);
                             }

                             QPushButton:disabled {
                             background-color: rgbs(230,230,230,100%);
                             color: rgbs(200,200,200,100%);
                             border-color: rgbs(200,200,200,100%);
                             }

                             QComboBox {
                             padding-left: 5px;
                             background-color: rgbs(230,230,230,100%);
                             border-width: 0px;
                             border-radius: 0px;
                             min-height:20px;
                             max-height:20px;
                             }

                             QComboBox::drop-down  {
                             subcontrol-origin: padding;
                             subcontrol-position: top left;
                             border-width: 0px;
                             }
                             
                             QComboBox::down-arrow {
                             image: url(''' + arrow + ''');
                             }
                             
                             '''
        # Windows fix, slashes should be always in unix-style
        self.stylesheet = self.stylesheet.replace('\\', '/')

        for widget in self.widgets:
            widget.setFocusPolicy(Qt.NoFocus)
            widget.setStyleSheet(self.stylesheet)

        layout_top = QHBoxLayout()
#.........这里部分代码省略.........

    def __init__(self, parent):
        if PYQT5:
            SpyderPluginWidget.__init__(self, parent, main = parent)
        else:
            SpyderPluginWidget.__init__(self, parent)

        self.internal_shell = None

        # Initialize plugin
        self.initialize_plugin()

        self.no_doc_string = _("No further documentation available")

        self._last_console_cb = None
        self._last_editor_cb = None

        self.set_default_color_scheme()

        self.plain_text = PlainText(self)
        self.rich_text = RichText(self)

        color_scheme = get_color_scheme(self.get_option('color_scheme_name'))
        self.set_plain_text_font(self.get_plugin_font(), color_scheme)
        self.plain_text.editor.toggle_wrap_mode(self.get_option('wrap'))

        # Add entries to read-only editor context-menu
        font_action = create_action(self, _("&Font..."), None,
                                    ima.icon('font'), _("Set font style"),
                                    triggered=self.change_font)
        self.wrap_action = create_action(self, _("Wrap lines"),
                                         toggled=self.toggle_wrap_mode)
        self.wrap_action.setChecked(self.get_option('wrap'))
        self.plain_text.editor.readonly_menu.addSeparator()
        add_actions(self.plain_text.editor.readonly_menu,
                    (font_action, self.wrap_action))

        self.set_rich_text_font(self.get_plugin_font('rich_text'))

        self.shell = None

        self.external_console = None

        # locked = disable link with Console
        self.locked = False
        self._last_texts = [None, None]
        self._last_editor_doc = None

        # Object name
        layout_edit = QHBoxLayout()
        layout_edit.setContentsMargins(0, 0, 0, 0)
        txt = _("Source")
        if sys.platform == 'darwin':
            source_label = QLabel("  " + txt)
        else:
            source_label = QLabel(txt)
        layout_edit.addWidget(source_label)
        self.source_combo = QComboBox(self)
        self.source_combo.addItems([_("Console"), _("Editor")])
        self.source_combo.currentIndexChanged.connect(self.source_changed)
        if (not programs.is_module_installed('rope') and
                not programs.is_module_installed('jedi', '>=0.8.1')):
            self.source_combo.hide()
            source_label.hide()
        layout_edit.addWidget(self.source_combo)
        layout_edit.addSpacing(10)
        layout_edit.addWidget(QLabel(_("Object")))
        self.combo = ObjectComboBox(self)
        layout_edit.addWidget(self.combo)
        self.object_edit = QLineEdit(self)
        self.object_edit.setReadOnly(True)
        layout_edit.addWidget(self.object_edit)
        self.combo.setMaxCount(self.get_option('max_history_entries'))
        self.combo.addItems( self.load_history() )
        self.combo.setItemText(0, '')
        self.combo.valid.connect(lambda valid: self.force_refresh())

        # Plain text docstring option
        self.docstring = True
        self.rich_help = sphinxify is not None \
                         and self.get_option('rich_mode', True)
        self.plain_text_action = create_action(self, _("Plain Text"),
                                               toggled=self.toggle_plain_text)

        # Source code option
        self.show_source_action = create_action(self, _("Show Source"),
                                                toggled=self.toggle_show_source)

        # Rich text option
        self.rich_text_action = create_action(self, _("Rich Text"),
                                         toggled=self.toggle_rich_text)

        # Add the help actions to an exclusive QActionGroup
        help_actions = QActionGroup(self)
        help_actions.setExclusive(True)
        help_actions.addAction(self.plain_text_action)
        help_actions.addAction(self.rich_text_action)

        # Automatic import option
        self.auto_import_action = create_action(self, _("Automatic import"),
                                                toggled=self.toggle_auto_import)
#.........这里部分代码省略.........

class Help(SpyderPluginWidget):
    """
    Docstrings viewer widget
    """
    CONF_SECTION = 'help'
    CONFIGWIDGET_CLASS = HelpConfigPage
    LOG_PATH = get_conf_path(CONF_SECTION)
    focus_changed = Signal()

    def __init__(self, parent):
        if PYQT5:
            SpyderPluginWidget.__init__(self, parent, main = parent)
        else:
            SpyderPluginWidget.__init__(self, parent)

        self.internal_shell = None

        # Initialize plugin
        self.initialize_plugin()

        self.no_doc_string = _("No further documentation available")

        self._last_console_cb = None
        self._last_editor_cb = None

        self.set_default_color_scheme()

        self.plain_text = PlainText(self)
        self.rich_text = RichText(self)

        color_scheme = get_color_scheme(self.get_option('color_scheme_name'))
        self.set_plain_text_font(self.get_plugin_font(), color_scheme)
        self.plain_text.editor.toggle_wrap_mode(self.get_option('wrap'))

        # Add entries to read-only editor context-menu
        font_action = create_action(self, _("&Font..."), None,
                                    ima.icon('font'), _("Set font style"),
                                    triggered=self.change_font)
        self.wrap_action = create_action(self, _("Wrap lines"),
                                         toggled=self.toggle_wrap_mode)
        self.wrap_action.setChecked(self.get_option('wrap'))
        self.plain_text.editor.readonly_menu.addSeparator()
        add_actions(self.plain_text.editor.readonly_menu,
                    (font_action, self.wrap_action))

        self.set_rich_text_font(self.get_plugin_font('rich_text'))

        self.shell = None

        self.external_console = None

        # locked = disable link with Console
        self.locked = False
        self._last_texts = [None, None]
        self._last_editor_doc = None

        # Object name
        layout_edit = QHBoxLayout()
        layout_edit.setContentsMargins(0, 0, 0, 0)
        txt = _("Source")
        if sys.platform == 'darwin':
            source_label = QLabel("  " + txt)
        else:
            source_label = QLabel(txt)
        layout_edit.addWidget(source_label)
        self.source_combo = QComboBox(self)
        self.source_combo.addItems([_("Console"), _("Editor")])
        self.source_combo.currentIndexChanged.connect(self.source_changed)
        if (not programs.is_module_installed('rope') and
                not programs.is_module_installed('jedi', '>=0.8.1')):
            self.source_combo.hide()
            source_label.hide()
        layout_edit.addWidget(self.source_combo)
        layout_edit.addSpacing(10)
        layout_edit.addWidget(QLabel(_("Object")))
        self.combo = ObjectComboBox(self)
        layout_edit.addWidget(self.combo)
        self.object_edit = QLineEdit(self)
        self.object_edit.setReadOnly(True)
        layout_edit.addWidget(self.object_edit)
        self.combo.setMaxCount(self.get_option('max_history_entries'))
        self.combo.addItems( self.load_history() )
        self.combo.setItemText(0, '')
        self.combo.valid.connect(lambda valid: self.force_refresh())

        # Plain text docstring option
        self.docstring = True
        self.rich_help = sphinxify is not None \
                         and self.get_option('rich_mode', True)
        self.plain_text_action = create_action(self, _("Plain Text"),
                                               toggled=self.toggle_plain_text)

        # Source code option
        self.show_source_action = create_action(self, _("Show Source"),
                                                toggled=self.toggle_show_source)

        # Rich text option
        self.rich_text_action = create_action(self, _("Rich Text"),
                                         toggled=self.toggle_rich_text)

#.........这里部分代码省略.........

 def focusInEvent(self, event):
     """Handle focus in event restoring to display the status icon."""
     show_status = getattr(self.lineEdit(), 'show_status_icon', None)
     if show_status:
         show_status()
     QComboBox.focusInEvent(self, event)

class RunConfigDialog(BaseRunConfigDialog):
    """Run configuration dialog box: multiple file version"""
    def __init__(self, parent=None):
        BaseRunConfigDialog.__init__(self, parent)
        self.file_to_run = None
        self.combo = None
        self.stack = None
        
    def run_btn_clicked(self):
        """Run button was just clicked"""
        self.file_to_run = to_text_string(self.combo.currentText())
        
    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 accept(self):
        """Reimplement Qt method"""
        configurations = []
        for index in range(self.stack.count()):
            filename = to_text_string(self.combo.itemText(index))
            runconfigoptions = self.stack.widget(index)
            if index == self.stack.currentIndex() and\
               not runconfigoptions.is_valid():
                return
            options = runconfigoptions.get()
            configurations.append( (filename, options) )
        _set_run_configurations(configurations)
        QDialog.accept(self)

 def focusOutEvent(self, event):
     """Handle focus out event"""
     # Calling asynchronously the 'add_current_text' to avoid crash
     # https://groups.google.com/group/spyderlib/browse_thread/thread/2257abf530e210bd
     QTimer.singleShot(50, self.add_current_text_if_valid)
     QComboBox.focusOutEvent(self, event)