class RichText(QWidget):
    """
    WebView widget with find dialog
    """
    def __init__(self, parent):
        QWidget.__init__(self, parent)

        self.webview = FrameWebView(self)
        self.find_widget = FindReplace(self)
        self.find_widget.set_editor(self.webview.web_widget)
        self.find_widget.hide()

        layout = QVBoxLayout()
        layout.setContentsMargins(0, 0, 0, 0)
        layout.addWidget(self.webview)
        layout.addWidget(self.find_widget)
        self.setLayout(layout)

    def set_font(self, font, fixed_font=None):
        """Set font"""
        self.webview.set_font(font, fixed_font=fixed_font)

    def set_html(self, html_text, base_url):
        """Set html text"""
        self.webview.setHtml(html_text, base_url)

    def clear(self):
        self.set_html('', self.webview.url())

class RichText(QWidget):
    """
    WebView widget with find dialog
    """
    def __init__(self, parent):
        QWidget.__init__(self, parent)

        self.webview = FrameWebView(self)
        if WEBENGINE:
            self.webview.web_widget.page().setBackgroundColor(
                QColor(MAIN_BG_COLOR))
        else:
            self.webview.web_widget.setStyleSheet(
                "background:{}".format(MAIN_BG_COLOR))
        self.find_widget = FindReplace(self)
        self.find_widget.set_editor(self.webview.web_widget)
        self.find_widget.hide()

        layout = QVBoxLayout()
        layout.setContentsMargins(0, 0, 0, 0)
        layout.addWidget(self.webview)
        layout.addWidget(self.find_widget)
        self.setLayout(layout)

    def set_font(self, font, fixed_font=None):
        """Set font"""
        self.webview.set_font(font, fixed_font=fixed_font)

    def set_html(self, html_text, base_url):
        """Set html text"""
        self.webview.setHtml(html_text, base_url)

    def clear(self):
        self.set_html('', self.webview.url())

def editor_find_replace_bot(base_editor_bot):
    editor_stack, qtbot = base_editor_bot
    text = ('spam bacon\n'
            'spam sausage\n'
            'spam egg')
    finfo = editor_stack.new('spam.py', 'utf-8', text)
    find_replace = FindReplace(None, enable_replace=True)
    editor_stack.set_find_widget(find_replace)
    find_replace.set_editor(finfo.editor)
    qtbot.addWidget(editor_stack)
    return editor_stack, finfo.editor, find_replace, qtbot

class PlainText(QWidget):
    """
    Read-only editor widget with find dialog
    """
    # Signals
    focus_changed = Signal()

    def __init__(self, parent):
        QWidget.__init__(self, parent)
        self.editor = None

        # Read-only editor
        self.editor = codeeditor.CodeEditor(self)
        self.editor.setup_editor(linenumbers=False, language='py',
                                 scrollflagarea=False, edge_line=False)
        self.editor.focus_changed.connect(lambda: self.focus_changed.emit())
        self.editor.setReadOnly(True)

        # Find/replace widget
        self.find_widget = FindReplace(self)
        self.find_widget.set_editor(self.editor)
        self.find_widget.hide()

        layout = QVBoxLayout()
        layout.setContentsMargins(0, 0, 0, 0)
        layout.addWidget(self.editor)
        layout.addWidget(self.find_widget)
        self.setLayout(layout)

    def set_font(self, font, color_scheme=None):
        """Set font"""
        self.editor.set_font(font, color_scheme=color_scheme)

    def set_color_scheme(self, color_scheme):
        """Set color scheme"""
        self.editor.set_color_scheme(color_scheme)

    def set_text(self, text, is_code):
        self.editor.set_highlight_current_line(is_code)
        self.editor.set_occurrence_highlighting(is_code)
        if is_code:
            self.editor.set_language('py')
        else:
            self.editor.set_language(None)
        self.editor.set_text(text)
        self.editor.set_cursor_position('sof')

    def clear(self):
        self.editor.clear()

def editor_folding_bot(base_editor_bot):
    """
    Setup CodeEditor with some text useful for folding related tests.
    """
    editor_stack, qtbot = base_editor_bot
    text = ('# dummy test file\n'
            'class a():\n'  # fold-block level-0
            '    self.b = 1\n'
            '    print(self.b)\n'
            '    \n'
            )
    finfo = editor_stack.new('foo.py', 'utf-8', text)

    find_replace = FindReplace(None, enable_replace=True)
    editor_stack.set_find_widget(find_replace)
    find_replace.set_editor(finfo.editor)
    qtbot.addWidget(editor_stack)
    return editor_stack, finfo.editor, find_replace, qtbot

    def __init__(
        self, parent=None, namespace=None, commands=[], message=None, exitfunc=None, profile=False, multithreaded=False
    ):
        if PYQT5:
            SpyderPluginWidget.__init__(self, parent, main=parent)
        else:
            SpyderPluginWidget.__init__(self, parent)

        debug_print("    ..internal console: initializing")
        self.dialog_manager = DialogManager()

        # Shell
        light_background = self.get_option("light_background")
        self.shell = InternalShell(
            parent,
            namespace,
            commands,
            message,
            self.get_option("max_line_count"),
            self.get_plugin_font(),
            exitfunc,
            profile,
            multithreaded,
            light_background=light_background,
        )
        self.shell.status.connect(lambda msg: self.show_message.emit(msg, 0))
        self.shell.go_to_error.connect(self.go_to_error)
        self.shell.focus_changed.connect(lambda: self.focus_changed.emit())

        # Redirecting some signals:
        self.shell.redirect_stdio.connect(lambda state: self.redirect_stdio.emit(state))

        # Initialize plugin
        self.initialize_plugin()

        # Find/replace widget
        self.find_widget = FindReplace(self)
        self.find_widget.set_editor(self.shell)
        self.find_widget.hide()
        self.register_widget_shortcuts(self.find_widget)

        # Main layout
        layout = QVBoxLayout()
        layout.addWidget(self.shell)
        layout.addWidget(self.find_widget)
        self.setLayout(layout)

        # Parameters
        self.shell.toggle_wrap_mode(self.get_option("wrap"))

        # Accepting drops
        self.setAcceptDrops(True)

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

        self.webview = FrameWebView(self)
        self.find_widget = FindReplace(self)
        self.find_widget.set_editor(self.webview.web_widget)
        self.find_widget.hide()

        layout = QVBoxLayout()
        layout.setContentsMargins(0, 0, 0, 0)
        layout.addWidget(self.webview)
        layout.addWidget(self.find_widget)
        self.setLayout(layout)

    def __init__(self, parent=None, namespace=None, commands=[], message=None,
                 exitfunc=None, profile=False, multithreaded=False):
        SpyderPluginWidget.__init__(self, parent)

        logger.info("Initializing...")
        self.dialog_manager = DialogManager()

        # Shell
        light_background = self.get_option('light_background')
        self.shell = InternalShell(parent, namespace, commands, message,
                                   self.get_option('max_line_count'),
                                   self.get_plugin_font(), exitfunc, profile,
                                   multithreaded,
                                   light_background=light_background)
        self.shell.status.connect(lambda msg: self.show_message.emit(msg, 0))
        self.shell.go_to_error.connect(self.go_to_error)
        self.shell.focus_changed.connect(lambda: self.focus_changed.emit())

        # Redirecting some signals:
        self.shell.redirect_stdio.connect(lambda state:
                                          self.redirect_stdio.emit(state))
        
        # Initialize plugin
        self.initialize_plugin()

        # Find/replace widget
        self.find_widget = FindReplace(self)
        self.find_widget.set_editor(self.shell)
        self.find_widget.hide()
        self.register_widget_shortcuts(self.find_widget)

        # Main layout
        btn_layout = QHBoxLayout()
        btn_layout.setAlignment(Qt.AlignLeft)
        btn_layout.addStretch()
        btn_layout.addWidget(self.options_button, Qt.AlignRight)
        layout = create_plugin_layout(btn_layout)
        layout.addWidget(self.shell)
        layout.addWidget(self.find_widget)
        self.setLayout(layout)
        
        # Parameters
        self.shell.toggle_wrap_mode(self.get_option('wrap'))
            
        # Accepting drops
        self.setAcceptDrops(True)

        # Traceback MessageBox
        self.error_dlg = None
        self.error_traceback = ""
        self.dismiss_error = False

    def __init__(self, parent):
        self.tabwidget = None
        self.menu_actions = None
        self.dockviewer = None
        self.wrap_action = None
        
        self.editors = []
        self.filenames = []
        if PYQT5:        
            SpyderPluginWidget.__init__(self, parent, main = parent)
        else:
            SpyderPluginWidget.__init__(self, parent)

        # Initialize plugin
        self.initialize_plugin()

        layout = QVBoxLayout()
        self.tabwidget = Tabs(self, self.menu_actions)
        self.tabwidget.currentChanged.connect(self.refresh_plugin)
        self.tabwidget.move_data.connect(self.move_tab)

        if sys.platform == 'darwin':
            tab_container = QWidget()
            tab_container.setObjectName('tab-container')
            tab_layout = QHBoxLayout(tab_container)
            tab_layout.setContentsMargins(0, 0, 0, 0)
            tab_layout.addWidget(self.tabwidget)
            layout.addWidget(tab_container)
        else:
            layout.addWidget(self.tabwidget)

        # Menu as corner widget
        options_button = create_toolbutton(self, text=_('Options'),
                                           icon=ima.icon('tooloptions'))
        options_button.setPopupMode(QToolButton.InstantPopup)
        menu = QMenu(self)
        add_actions(menu, self.menu_actions)
        options_button.setMenu(menu)
        self.tabwidget.setCornerWidget(options_button)
        
        # Find/replace widget
        self.find_widget = FindReplace(self)
        self.find_widget.hide()
        self.register_widget_shortcuts(self.find_widget)

        layout.addWidget(self.find_widget)

        self.setLayout(layout)

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

        self.webview = FrameWebView(self)
        if WEBENGINE:
            self.webview.web_widget.page().setBackgroundColor(
                QColor(MAIN_BG_COLOR))
        else:
            self.webview.web_widget.setStyleSheet(
                "background:{}".format(MAIN_BG_COLOR))
        self.find_widget = FindReplace(self)
        self.find_widget.set_editor(self.webview.web_widget)
        self.find_widget.hide()

        layout = QVBoxLayout()
        layout.setContentsMargins(0, 0, 0, 0)
        layout.addWidget(self.webview)
        layout.addWidget(self.find_widget)
        self.setLayout(layout)

    def __init__(self, parent):
        """Initialize widget and create layout."""
        QWidget.__init__(self, parent)

        self.editors = []
        self.filenames = []

        self.tabwidget = None
        self.menu_actions = None

        layout = QVBoxLayout()
        self.tabwidget = Tabs(self, self.menu_actions)
        self.tabwidget.currentChanged.connect(self.refresh)
        self.tabwidget.move_data.connect(self.move_tab)

        if sys.platform == 'darwin':
            tab_container = QWidget()
            tab_container.setObjectName('tab-container')
            tab_layout = QHBoxLayout(tab_container)
            tab_layout.setContentsMargins(0, 0, 0, 0)
            tab_layout.addWidget(self.tabwidget)
            layout.addWidget(tab_container)
        else:
            layout.addWidget(self.tabwidget)

        # Menu as corner widget
        options_button = create_toolbutton(self, text=_('Options'),
                                           icon=ima.icon('tooloptions'))
        options_button.setPopupMode(QToolButton.InstantPopup)
        self.menu = QMenu(self)

        options_button.setMenu(self.menu)
        self.tabwidget.setCornerWidget(options_button)

        # Find/replace widget
        self.find_widget = FindReplace(self)
        self.find_widget.hide()

        layout.addWidget(self.find_widget)

        self.setLayout(layout)

    def __init__(self, parent=None):
        QWidget.__init__(self, parent)
        
        self.home_url = None
        
        self.webview = WebView(self)
        self.webview.loadFinished.connect(self.load_finished)
        self.webview.titleChanged.connect(self.setWindowTitle)
        self.webview.urlChanged.connect(self.url_changed)
                
        home_button = create_toolbutton(self, icon=ima.icon('home'),
                                        tip=_("Home"),
                                        triggered=self.go_home)
        
        zoom_out_button = action2button(self.webview.zoom_out_action)
        zoom_in_button = action2button(self.webview.zoom_in_action)
        
        pageact2btn = lambda prop: action2button(self.webview.pageAction(prop),
                                                 parent=self.webview)
        refresh_button = pageact2btn(QWebEnginePage.Reload)
        stop_button = pageact2btn(QWebEnginePage.Stop)
        previous_button = pageact2btn(QWebEnginePage.Back)
        next_button = pageact2btn(QWebEnginePage.Forward)
        
        stop_button.setEnabled(False)
        self.webview.loadStarted.connect(lambda: stop_button.setEnabled(True))
        self.webview.loadFinished.connect(lambda: stop_button.setEnabled(False))
        
        progressbar = QProgressBar(self)
        progressbar.setTextVisible(False)
        progressbar.hide()
        self.webview.loadStarted.connect(progressbar.show)
        self.webview.loadProgress.connect(progressbar.setValue)
        self.webview.loadFinished.connect(lambda _state: progressbar.hide())

        label = QLabel(self.get_label())

        self.url_combo = UrlComboBox(self)
        self.url_combo.valid.connect(self.url_combo_activated)
        if not WEBENGINE:
            self.webview.iconChanged.connect(self.icon_changed)

        self.find_widget = FindReplace(self)
        self.find_widget.set_editor(self.webview)
        self.find_widget.hide()

        find_button = create_toolbutton(self, icon=ima.icon('find'),
                                        tip=_("Find text"),
                                        toggled=self.toggle_find_widget)
        self.find_widget.visibility_changed.connect(find_button.setChecked)

        hlayout = QHBoxLayout()
        for widget in (previous_button, next_button, home_button, find_button,
                       label, self.url_combo, zoom_out_button, zoom_in_button,
                       refresh_button, progressbar, stop_button):
            hlayout.addWidget(widget)
        
        layout = QVBoxLayout()
        layout.addLayout(hlayout)
        layout.addWidget(self.webview)
        layout.addWidget(self.find_widget)
        self.setLayout(layout)

class WebBrowser(QWidget):
    """
    Web browser widget
    """
    def __init__(self, parent=None):
        QWidget.__init__(self, parent)
        
        self.home_url = None
        
        self.webview = WebView(self)
        self.webview.loadFinished.connect(self.load_finished)
        self.webview.titleChanged.connect(self.setWindowTitle)
        self.webview.urlChanged.connect(self.url_changed)
                
        home_button = create_toolbutton(self, icon=ima.icon('home'),
                                        tip=_("Home"),
                                        triggered=self.go_home)
        
        zoom_out_button = action2button(self.webview.zoom_out_action)
        zoom_in_button = action2button(self.webview.zoom_in_action)
        
        pageact2btn = lambda prop: action2button(self.webview.pageAction(prop),
                                                 parent=self.webview)
        refresh_button = pageact2btn(QWebEnginePage.Reload)
        stop_button = pageact2btn(QWebEnginePage.Stop)
        previous_button = pageact2btn(QWebEnginePage.Back)
        next_button = pageact2btn(QWebEnginePage.Forward)
        
        stop_button.setEnabled(False)
        self.webview.loadStarted.connect(lambda: stop_button.setEnabled(True))
        self.webview.loadFinished.connect(lambda: stop_button.setEnabled(False))
        
        progressbar = QProgressBar(self)
        progressbar.setTextVisible(False)
        progressbar.hide()
        self.webview.loadStarted.connect(progressbar.show)
        self.webview.loadProgress.connect(progressbar.setValue)
        self.webview.loadFinished.connect(lambda _state: progressbar.hide())

        label = QLabel(self.get_label())

        self.url_combo = UrlComboBox(self)
        self.url_combo.valid.connect(self.url_combo_activated)
        if not WEBENGINE:
            self.webview.iconChanged.connect(self.icon_changed)

        self.find_widget = FindReplace(self)
        self.find_widget.set_editor(self.webview)
        self.find_widget.hide()

        find_button = create_toolbutton(self, icon=ima.icon('find'),
                                        tip=_("Find text"),
                                        toggled=self.toggle_find_widget)
        self.find_widget.visibility_changed.connect(find_button.setChecked)

        hlayout = QHBoxLayout()
        for widget in (previous_button, next_button, home_button, find_button,
                       label, self.url_combo, zoom_out_button, zoom_in_button,
                       refresh_button, progressbar, stop_button):
            hlayout.addWidget(widget)
        
        layout = QVBoxLayout()
        layout.addLayout(hlayout)
        layout.addWidget(self.webview)
        layout.addWidget(self.find_widget)
        self.setLayout(layout)
                
    def get_label(self):
        """Return address label text"""
        return _("Address:")
            
    def set_home_url(self, text):
        """Set home URL"""
        self.home_url = QUrl(text)
        
    def set_url(self, url):
        """Set current URL"""
        self.url_changed(url)
        self.go_to(url)
        
    def go_to(self, url_or_text):
        """Go to page *address*"""
        if is_text_string(url_or_text):
            url = QUrl(url_or_text)
        else:
            url = url_or_text
        self.webview.load(url)

    @Slot()
    def go_home(self):
        """Go to home page"""
        if self.home_url is not None:
            self.set_url(self.home_url)
        
    def text_to_url(self, text):
        """Convert text address into QUrl object"""
        return QUrl(text)
        
    def url_combo_activated(self, valid):
        """Load URL from combo box first item"""
#.........这里部分代码省略.........

class ExternalConsole(SpyderPluginWidget):
    """
    Console widget
    """
    CONF_SECTION = 'console'
    CONFIGWIDGET_CLASS = ExternalConsoleConfigPage
    DISABLE_ACTIONS_WHEN_HIDDEN = False

    edit_goto = Signal((str, int, str), (str, int, str, bool))
    focus_changed = Signal()
    redirect_stdio = Signal(bool)

    def __init__(self, parent):
        if PYQT5:
            SpyderPluginWidget.__init__(self, parent, main = parent)
        else:
            SpyderPluginWidget.__init__(self, parent)
        self.tabwidget = None
        self.menu_actions = None

        self.help = None # Help plugin
        self.historylog = None # History log plugin
        self.variableexplorer = None # Variable explorer plugin

        self.python_count = 0
        self.terminal_count = 0
        
        # Python startup file selection
        if not osp.isfile(self.get_option('pythonstartup', '')):
            self.set_option('pythonstartup', SCIENTIFIC_STARTUP)
        # default/custom settings are mutually exclusive:
        self.set_option('pythonstartup/custom',
                        not self.get_option('pythonstartup/default'))

        self.shellwidgets = []
        self.filenames = []
        self.icons = []
        self.runfile_args = ""
        
        # Initialize plugin
        self.initialize_plugin()
        
        layout = QVBoxLayout()
        self.tabwidget = Tabs(self, self.menu_actions)
        if hasattr(self.tabwidget, 'setDocumentMode')\
           and not sys.platform == 'darwin':
            # Don't set document mode to true on OSX because it generates
            # a crash when the console is detached from the main window
            # Fixes Issue 561
            self.tabwidget.setDocumentMode(True)
        self.tabwidget.currentChanged.connect(self.refresh_plugin)
        self.tabwidget.move_data.connect(self.move_tab)
        self.main.sig_pythonpath_changed.connect(self.set_path)
                     
        self.tabwidget.set_close_function(self.close_console)

        if sys.platform == 'darwin':
            tab_container = QWidget()
            tab_container.setObjectName('tab-container')
            tab_layout = QHBoxLayout(tab_container)
            tab_layout.setContentsMargins(0, 0, 0, 0)
            tab_layout.addWidget(self.tabwidget)
            layout.addWidget(tab_container)
        else:
            layout.addWidget(self.tabwidget)
        
        # Find/replace widget
        self.find_widget = FindReplace(self)
        self.find_widget.hide()
        self.register_widget_shortcuts(self.find_widget)

        layout.addWidget(self.find_widget)

        self.setLayout(layout)

        # Accepting drops
        self.setAcceptDrops(True)

    def move_tab(self, index_from, index_to):
        """
        Move tab (tabs themselves have already been moved by the tabwidget)
        """
        filename = self.filenames.pop(index_from)
        shell = self.shellwidgets.pop(index_from)
        icons = self.icons.pop(index_from)
        
        self.filenames.insert(index_to, filename)
        self.shellwidgets.insert(index_to, shell)
        self.icons.insert(index_to, icons)
        self.update_plugin_title.emit()

    def get_shell_index_from_id(self, shell_id):
        """Return shellwidget index from id"""
        for index, shell in enumerate(self.shellwidgets):
            if id(shell) == shell_id:
                return index

    def close_console(self, index=None):
        """Close console tab from index or widget (or close current tab)"""
        # Get tab index
#.........这里部分代码省略.........

class Console(SpyderPluginWidget):
    """
    Console widget
    """
    CONF_SECTION = 'internal_console'
    focus_changed = Signal()
    redirect_stdio = Signal(bool)
    edit_goto = Signal(str, int, str)
    
    def __init__(self, parent=None, namespace=None, commands=[], message=None,
                 exitfunc=None, profile=False, multithreaded=False):
        SpyderPluginWidget.__init__(self, parent)

        logger.info("Initializing...")
        self.dialog_manager = DialogManager()

        # Shell
        light_background = self.get_option('light_background')
        self.shell = InternalShell(parent, namespace, commands, message,
                                   self.get_option('max_line_count'),
                                   self.get_plugin_font(), exitfunc, profile,
                                   multithreaded,
                                   light_background=light_background)
        self.shell.status.connect(lambda msg: self.show_message.emit(msg, 0))
        self.shell.go_to_error.connect(self.go_to_error)
        self.shell.focus_changed.connect(lambda: self.focus_changed.emit())

        # Redirecting some signals:
        self.shell.redirect_stdio.connect(lambda state:
                                          self.redirect_stdio.emit(state))
        
        # Initialize plugin
        self.initialize_plugin()

        # Find/replace widget
        self.find_widget = FindReplace(self)
        self.find_widget.set_editor(self.shell)
        self.find_widget.hide()
        self.register_widget_shortcuts(self.find_widget)

        # Main layout
        btn_layout = QHBoxLayout()
        btn_layout.setAlignment(Qt.AlignLeft)
        btn_layout.addStretch()
        btn_layout.addWidget(self.options_button, Qt.AlignRight)
        layout = create_plugin_layout(btn_layout)
        layout.addWidget(self.shell)
        layout.addWidget(self.find_widget)
        self.setLayout(layout)
        
        # Parameters
        self.shell.toggle_wrap_mode(self.get_option('wrap'))
            
        # Accepting drops
        self.setAcceptDrops(True)

        # Traceback MessageBox
        self.error_dlg = None
        self.error_traceback = ""
        self.dismiss_error = False

    #------ Private API --------------------------------------------------------
    def set_historylog(self, historylog):
        """Bind historylog instance to this console
        Not used anymore since v2.0"""
        historylog.add_history(self.shell.history_filename)
        self.shell.append_to_history.connect(historylog.append_to_history)

    def set_help(self, help_plugin):
        """Bind help instance to this console"""
        self.shell.help = help_plugin

    #------ SpyderPluginWidget API ---------------------------------------------
    def get_plugin_title(self):
        """Return widget title"""
        return _('Internal console')
    
    def get_focus_widget(self):
        """
        Return the widget to give focus to when
        this plugin's dockwidget is raised on top-level
        """
        return self.shell

    def update_font(self):
        """Update font from Preferences"""
        font = self.get_plugin_font()
        self.shell.set_font(font)

    def closing_plugin(self, cancelable=False):
        """Perform actions before parent main window is closed"""
        self.dialog_manager.close_all()
        self.shell.exit_interpreter()
        return True
        
    def refresh_plugin(self):
        pass
    
    def get_plugin_actions(self):
        """Return a list of actions related to plugin"""
#.........这里部分代码省略.........

class HistoryLog(SpyderPluginWidget):
    """
    History log widget
    """

    CONF_SECTION = "historylog"
    CONFIGWIDGET_CLASS = HistoryConfigPage
    focus_changed = Signal()

    def __init__(self, parent):
        self.tabwidget = None
        self.menu_actions = None
        self.dockviewer = None
        self.wrap_action = None

        self.editors = []
        self.filenames = []
        if PYQT5:
            SpyderPluginWidget.__init__(self, parent, main=parent)
        else:
            SpyderPluginWidget.__init__(self, parent)

        # Initialize plugin
        self.initialize_plugin()

        layout = QVBoxLayout()
        self.tabwidget = Tabs(self, self.menu_actions)
        self.tabwidget.currentChanged.connect(self.refresh_plugin)
        self.tabwidget.move_data.connect(self.move_tab)

        if sys.platform == "darwin":
            tab_container = QWidget()
            tab_container.setObjectName("tab-container")
            tab_layout = QHBoxLayout(tab_container)
            tab_layout.setContentsMargins(0, 0, 0, 0)
            tab_layout.addWidget(self.tabwidget)
            layout.addWidget(tab_container)
        else:
            layout.addWidget(self.tabwidget)

        # Menu as corner widget
        options_button = create_toolbutton(self, text=_("Options"), icon=ima.icon("tooloptions"))
        options_button.setPopupMode(QToolButton.InstantPopup)
        menu = QMenu(self)
        add_actions(menu, self.menu_actions)
        options_button.setMenu(menu)
        self.tabwidget.setCornerWidget(options_button)

        # Find/replace widget
        self.find_widget = FindReplace(self)
        self.find_widget.hide()
        self.register_widget_shortcuts(self.find_widget)

        layout.addWidget(self.find_widget)

        self.setLayout(layout)

    # ------ SpyderPluginWidget API ---------------------------------------------
    def get_plugin_title(self):
        """Return widget title"""
        return _("History log")

    def get_plugin_icon(self):
        """Return widget icon"""
        return ima.icon("history")

    def get_focus_widget(self):
        """
        Return the widget to give focus to when
        this plugin's dockwidget is raised on top-level
        """
        return self.tabwidget.currentWidget()

    def closing_plugin(self, cancelable=False):
        """Perform actions before parent main window is closed"""
        return True

    def refresh_plugin(self):
        """Refresh tabwidget"""
        if self.tabwidget.count():
            editor = self.tabwidget.currentWidget()
        else:
            editor = None
        self.find_widget.set_editor(editor)

    def get_plugin_actions(self):
        """Return a list of actions related to plugin"""
        history_action = create_action(
            self,
            _("History..."),
            None,
            ima.icon("history"),
            _("Set history maximum entries"),
            triggered=self.change_history_depth,
        )
        self.wrap_action = create_action(self, _("Wrap lines"), toggled=self.toggle_wrap_mode)
        self.wrap_action.setChecked(self.get_option("wrap"))
        self.menu_actions = [history_action, self.wrap_action]
        return self.menu_actions

#.........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.tabwidget = None
        self.menu_actions = None

        self.help = None # Help plugin
        self.historylog = None # History log plugin
        self.variableexplorer = None # Variable explorer plugin

        self.python_count = 0
        self.terminal_count = 0
        
        # Python startup file selection
        if not osp.isfile(self.get_option('pythonstartup', '')):
            self.set_option('pythonstartup', SCIENTIFIC_STARTUP)
        # default/custom settings are mutually exclusive:
        self.set_option('pythonstartup/custom',
                        not self.get_option('pythonstartup/default'))

        self.shellwidgets = []
        self.filenames = []
        self.icons = []
        self.runfile_args = ""
        
        # Initialize plugin
        self.initialize_plugin()
        
        layout = QVBoxLayout()
        self.tabwidget = Tabs(self, self.menu_actions)
        if hasattr(self.tabwidget, 'setDocumentMode')\
           and not sys.platform == 'darwin':
            # Don't set document mode to true on OSX because it generates
            # a crash when the console is detached from the main window
            # Fixes Issue 561
            self.tabwidget.setDocumentMode(True)
        self.tabwidget.currentChanged.connect(self.refresh_plugin)
        self.tabwidget.move_data.connect(self.move_tab)
        self.main.sig_pythonpath_changed.connect(self.set_path)
                     
        self.tabwidget.set_close_function(self.close_console)

        if sys.platform == 'darwin':
            tab_container = QWidget()
            tab_container.setObjectName('tab-container')
            tab_layout = QHBoxLayout(tab_container)
            tab_layout.setContentsMargins(0, 0, 0, 0)
            tab_layout.addWidget(self.tabwidget)
            layout.addWidget(tab_container)
        else:
            layout.addWidget(self.tabwidget)
        
        # Find/replace widget
        self.find_widget = FindReplace(self)
        self.find_widget.hide()
        self.register_widget_shortcuts(self.find_widget)

        layout.addWidget(self.find_widget)

        self.setLayout(layout)

        # Accepting drops
        self.setAcceptDrops(True)

class History(QWidget):
    """History plugin main widget."""

    focus_changed = Signal()

    def __init__(self, parent):
        """Initialize widget and create layout."""
        QWidget.__init__(self, parent)

        self.editors = []
        self.filenames = []

        self.tabwidget = None
        self.menu_actions = None

        layout = QVBoxLayout()
        self.tabwidget = Tabs(self, self.menu_actions)
        self.tabwidget.currentChanged.connect(self.refresh)
        self.tabwidget.move_data.connect(self.move_tab)

        if sys.platform == 'darwin':
            tab_container = QWidget()
            tab_container.setObjectName('tab-container')
            tab_layout = QHBoxLayout(tab_container)
            tab_layout.setContentsMargins(0, 0, 0, 0)
            tab_layout.addWidget(self.tabwidget)
            layout.addWidget(tab_container)
        else:
            layout.addWidget(self.tabwidget)

        # Menu as corner widget
        options_button = create_toolbutton(self, text=_('Options'),
                                           icon=ima.icon('tooloptions'))
        options_button.setPopupMode(QToolButton.InstantPopup)
        self.menu = QMenu(self)

        options_button.setMenu(self.menu)
        self.tabwidget.setCornerWidget(options_button)

        # Find/replace widget
        self.find_widget = FindReplace(self)
        self.find_widget.hide()

        layout.addWidget(self.find_widget)

        self.setLayout(layout)

    def set_menu_actions(self, menu_actions):
        """Add options to corner menu."""
        if self.menu_actions is not None:
            add_actions(self.menu, self.menu_actions)

    def refresh(self):
        """Refresh tabwidget."""
        if self.tabwidget.count():
            editor = self.tabwidget.currentWidget()
        else:
            editor = None
        self.find_widget.set_editor(editor)

    def move_tab(self, index_from, index_to):
        """
        Move tab.

        (tabs themselves have already been moved by the history.tabwidget)
        """
        filename = self.filenames.pop(index_from)
        editor = self.editors.pop(index_from)

        self.filenames.insert(index_to, filename)
        self.editors.insert(index_to, editor)

    def add_history(self, filename, color_scheme, font, wrap):
        """
        Add new history tab.

        Args:
            filename (str): file to be loaded in a new tab.
        """
        filename = encoding.to_unicode_from_fs(filename)
        if filename in self.filenames:
            return
        editor = codeeditor.CodeEditor(self)
        if osp.splitext(filename)[1] == '.py':
            language = 'py'
        else:
            language = 'bat'
        editor.setup_editor(linenumbers=False,
                            language=language,
                            scrollflagarea=False,
                            show_class_func_dropdown=False)
        editor.focus_changed.connect(lambda: self.focus_changed.emit())
        editor.setReadOnly(True)

        editor.set_font(font, color_scheme)
        editor.toggle_wrap_mode(wrap)

        text, _ = encoding.read(filename)
        editor.set_text(text)
        editor.set_cursor_position('eof')
#.........这里部分代码省略.........

class HistoryLog(SpyderPluginWidget):
    """History log plugin."""

    CONF_SECTION = 'historylog'
    CONFIGWIDGET_CLASS = HistoryConfigPage
    focus_changed = Signal()

    def __init__(self, parent):
        """Initialize plugin and create History main widget."""
        SpyderPluginWidget.__init__(self, parent)

        self.tabwidget = None
        self.dockviewer = None
        self.wrap_action = None
        self.linenumbers_action = None

        self.editors = []
        self.filenames = []

        # Initialize plugin actions, toolbutton and general signals
        self.initialize_plugin()

        layout = QVBoxLayout()
        self.tabwidget = Tabs(self, self.plugin_actions)
        self.tabwidget.currentChanged.connect(self.refresh_plugin)
        self.tabwidget.move_data.connect(self.move_tab)

        if sys.platform == 'darwin':
            tab_container = QWidget()
            tab_container.setObjectName('tab-container')
            tab_layout = QHBoxLayout(tab_container)
            tab_layout.setContentsMargins(0, 0, 0, 0)
            tab_layout.addWidget(self.tabwidget)
            layout.addWidget(tab_container)
        else:
            layout.addWidget(self.tabwidget)

        # Menu as corner widget