Ejemplo n.º 1
0
class Config(QDialog):
    '''
    Configuration dialog for single book conversion. If accepted, has the
    following important attributes

    output_format - Output format (without a leading .)
    input_format  - Input format (without a leading .)
    opf_path - Path to OPF file with user specified metadata
    cover_path - Path to user specified cover (can be None)
    recommendations - A pickled list of 3 tuples in the same format as the
    recommendations member of the Input/Output plugins.
    '''
    def __init__(self,
                 parent,
                 db,
                 book_id,
                 preferred_input_format=None,
                 preferred_output_format=None):
        QDialog.__init__(self, parent)
        self.setupUi()
        self.opt_individual_saved_settings.setVisible(False)
        self.db, self.book_id = db, book_id

        self.setup_input_output_formats(self.db, self.book_id,
                                        preferred_input_format,
                                        preferred_output_format)
        self.setup_pipeline()

        self.input_formats.currentIndexChanged[native_string_type].connect(
            self.setup_pipeline)
        self.output_formats.currentIndexChanged[native_string_type].connect(
            self.setup_pipeline)
        self.groups.setSpacing(5)
        self.groups.activated[(QModelIndex)].connect(self.show_pane)
        self.groups.clicked[(QModelIndex)].connect(self.show_pane)
        self.groups.entered[(QModelIndex)].connect(self.show_group_help)
        rb = self.buttonBox.button(self.buttonBox.RestoreDefaults)
        rb.setText(_('Restore &defaults'))
        rb.clicked.connect(self.restore_defaults)
        self.groups.setMouseTracking(True)
        geom = gprefs.get('convert_single_dialog_geom', None)
        if geom:
            self.restoreGeometry(geom)
        else:
            self.resize(self.sizeHint())

    def setupUi(self):
        self.setObjectName("Dialog")
        self.resize(1024, 700)
        self.setWindowIcon(QIcon(I('convert.png')))
        self.gridLayout = QGridLayout(self)
        self.gridLayout.setObjectName("gridLayout")
        self.horizontalLayout = QHBoxLayout()
        self.horizontalLayout.setObjectName("horizontalLayout")
        self.input_label = QLabel(self)
        self.input_label.setObjectName("input_label")
        self.horizontalLayout.addWidget(self.input_label)
        self.input_formats = QComboBox(self)
        self.input_formats.setSizeAdjustPolicy(
            QComboBox.AdjustToMinimumContentsLengthWithIcon)
        self.input_formats.setMinimumContentsLength(5)
        self.input_formats.setObjectName("input_formats")
        self.horizontalLayout.addWidget(self.input_formats)
        self.opt_individual_saved_settings = QCheckBox(self)
        self.opt_individual_saved_settings.setObjectName(
            "opt_individual_saved_settings")
        self.horizontalLayout.addWidget(self.opt_individual_saved_settings)
        spacerItem = QSpacerItem(40, 20, QSizePolicy.Expanding,
                                 QSizePolicy.Minimum)
        self.horizontalLayout.addItem(spacerItem)
        self.label_2 = QLabel(self)
        self.label_2.setObjectName("label_2")
        self.horizontalLayout.addWidget(self.label_2)
        self.output_formats = QComboBox(self)
        self.output_formats.setSizeAdjustPolicy(
            QComboBox.AdjustToMinimumContentsLengthWithIcon)
        self.output_formats.setMinimumContentsLength(5)
        self.output_formats.setObjectName("output_formats")
        self.horizontalLayout.addWidget(self.output_formats)
        self.gridLayout.addLayout(self.horizontalLayout, 0, 0, 1, 2)
        self.groups = QListView(self)
        sizePolicy = QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
        sizePolicy.setHorizontalStretch(1)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(
            self.groups.sizePolicy().hasHeightForWidth())
        self.groups.setSizePolicy(sizePolicy)
        self.groups.setTabKeyNavigation(True)
        self.groups.setIconSize(QSize(48, 48))
        self.groups.setWordWrap(True)
        self.groups.setObjectName("groups")
        self.gridLayout.addWidget(self.groups, 1, 0, 3, 1)
        self.scrollArea = QScrollArea(self)
        sizePolicy = QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
        sizePolicy.setHorizontalStretch(4)
        sizePolicy.setVerticalStretch(10)
        sizePolicy.setHeightForWidth(
            self.scrollArea.sizePolicy().hasHeightForWidth())
        self.scrollArea.setSizePolicy(sizePolicy)
        self.scrollArea.setFrameShape(QFrame.NoFrame)
        self.scrollArea.setLineWidth(0)
        self.scrollArea.setWidgetResizable(True)
        self.scrollArea.setObjectName("scrollArea")
        self.scrollAreaWidgetContents = QWidget()
        self.scrollAreaWidgetContents.setGeometry(QRect(0, 0, 810, 494))
        self.scrollAreaWidgetContents.setObjectName("scrollAreaWidgetContents")
        self.verticalLayout_3 = QVBoxLayout(self.scrollAreaWidgetContents)
        self.verticalLayout_3.setContentsMargins(0, 0, 0, 0)
        self.verticalLayout_3.setObjectName("verticalLayout_3")
        self.stack = QStackedWidget(self.scrollAreaWidgetContents)
        sizePolicy = QSizePolicy(QSizePolicy.Preferred, QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(
            self.stack.sizePolicy().hasHeightForWidth())
        self.stack.setSizePolicy(sizePolicy)
        self.stack.setObjectName("stack")
        self.page = QWidget()
        self.page.setObjectName("page")
        self.stack.addWidget(self.page)
        self.page_2 = QWidget()
        self.page_2.setObjectName("page_2")
        self.stack.addWidget(self.page_2)
        self.verticalLayout_3.addWidget(self.stack)
        self.scrollArea.setWidget(self.scrollAreaWidgetContents)
        self.gridLayout.addWidget(self.scrollArea, 1, 1, 1, 1)
        self.buttonBox = QDialogButtonBox(self)
        self.buttonBox.setOrientation(Qt.Horizontal)
        self.buttonBox.setStandardButtons(QDialogButtonBox.Cancel
                                          | QDialogButtonBox.Ok
                                          | QDialogButtonBox.RestoreDefaults)
        self.buttonBox.setObjectName("buttonBox")
        self.gridLayout.addWidget(self.buttonBox, 3, 1, 1, 1)
        self.help = QTextEdit(self)
        sizePolicy = QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(
            self.help.sizePolicy().hasHeightForWidth())
        self.help.setSizePolicy(sizePolicy)
        self.help.setMaximumHeight(80)
        self.help.setObjectName("help")
        self.gridLayout.addWidget(self.help, 2, 1, 1, 1)
        self.input_label.setBuddy(self.input_formats)
        self.label_2.setBuddy(self.output_formats)
        self.input_label.setText(_("&Input format:"))
        self.opt_individual_saved_settings.setText(
            _("Use &saved conversion settings for individual books"))
        self.label_2.setText(_("&Output format:"))

        self.buttonBox.accepted.connect(self.accept)
        self.buttonBox.rejected.connect(self.reject)

    def sizeHint(self):
        desktop = QCoreApplication.instance().desktop()
        geom = desktop.availableGeometry(self)
        nh, nw = max(300, geom.height() - 100), max(400, geom.width() - 70)
        return QSize(nw, nh)

    def restore_defaults(self):
        delete_specifics(self.db, self.book_id)
        self.setup_pipeline()

    @property
    def input_format(self):
        return unicode_type(self.input_formats.currentText()).lower()

    @property
    def output_format(self):
        return unicode_type(self.output_formats.currentText()).lower()

    @property
    def manually_fine_tune_toc(self):
        for i in range(self.stack.count()):
            w = self.stack.widget(i)
            if hasattr(w, 'manually_fine_tune_toc'):
                return w.manually_fine_tune_toc.isChecked()

    def setup_pipeline(self, *args):
        oidx = self.groups.currentIndex().row()
        input_format = self.input_format
        output_format = self.output_format
        self.plumber = create_dummy_plumber(input_format, output_format)

        def widget_factory(cls):
            return cls(self.stack, self.plumber.get_option_by_name,
                       self.plumber.get_option_help, self.db, self.book_id)

        self.mw = widget_factory(MetadataWidget)
        self.setWindowTitle(
            _('Convert') + ' ' + unicode_type(self.mw.title.text()))
        lf = widget_factory(LookAndFeelWidget)
        hw = widget_factory(HeuristicsWidget)
        sr = widget_factory(SearchAndReplaceWidget)
        ps = widget_factory(PageSetupWidget)
        sd = widget_factory(StructureDetectionWidget)
        toc = widget_factory(TOCWidget)
        from calibre.gui2.actions.toc_edit import SUPPORTED
        toc.manually_fine_tune_toc.setVisible(
            output_format.upper() in SUPPORTED)
        debug = widget_factory(DebugWidget)

        output_widget = self.plumber.output_plugin.gui_configuration_widget(
            self.stack, self.plumber.get_option_by_name,
            self.plumber.get_option_help, self.db, self.book_id)
        input_widget = self.plumber.input_plugin.gui_configuration_widget(
            self.stack, self.plumber.get_option_by_name,
            self.plumber.get_option_help, self.db, self.book_id)
        while True:
            c = self.stack.currentWidget()
            if not c:
                break
            self.stack.removeWidget(c)

        widgets = [self.mw, lf, hw, ps, sd, toc, sr]
        if input_widget is not None:
            widgets.append(input_widget)
        if output_widget is not None:
            widgets.append(output_widget)
        widgets.append(debug)
        for w in widgets:
            self.stack.addWidget(w)
            w.set_help_signal.connect(self.help.setPlainText)

        self._groups_model = GroupModel(widgets)
        self.groups.setModel(self._groups_model)

        idx = oidx if -1 < oidx < self._groups_model.rowCount() else 0
        self.groups.setCurrentIndex(self._groups_model.index(idx))
        self.stack.setCurrentIndex(idx)
        try:
            shutil.rmtree(self.plumber.archive_input_tdir, ignore_errors=True)
        except:
            pass

    def setup_input_output_formats(self, db, book_id, preferred_input_format,
                                   preferred_output_format):
        if preferred_output_format:
            preferred_output_format = preferred_output_format.upper()
        output_formats = get_output_formats(preferred_output_format)
        input_format, input_formats = get_input_format_for_book(
            db, book_id, preferred_input_format)
        preferred_output_format = preferred_output_format if \
            preferred_output_format in output_formats else \
            sort_formats_by_preference(output_formats,
                    [prefs['output_format']])[0]
        self.input_formats.addItems(
            (unicode_type(x.upper()) for x in input_formats))
        self.output_formats.addItems(
            (unicode_type(x.upper()) for x in output_formats))
        self.input_formats.setCurrentIndex(input_formats.index(input_format))
        self.output_formats.setCurrentIndex(
            output_formats.index(preferred_output_format))

    def show_pane(self, index):
        self.stack.setCurrentIndex(index.row())

    def accept(self):
        recs = GuiRecommendations()
        for w in self._groups_model.widgets:
            if not w.pre_commit_check():
                return
            x = w.commit(save_defaults=False)
            recs.update(x)
        self.opf_file, self.cover_file = self.mw.opf_file, self.mw.cover_file
        self._recommendations = recs
        if self.db is not None:
            recs['gui_preferred_input_format'] = self.input_format
            save_specifics(self.db, self.book_id, recs)
        self.break_cycles()
        QDialog.accept(self)

    def reject(self):
        self.break_cycles()
        QDialog.reject(self)

    def done(self, r):
        if self.isVisible():
            gprefs['convert_single_dialog_geom'] = \
                bytearray(self.saveGeometry())
        return QDialog.done(self, r)

    def break_cycles(self):
        for i in range(self.stack.count()):
            w = self.stack.widget(i)
            w.break_cycles()

    @property
    def recommendations(self):
        recs = [(k, v, OptionRecommendation.HIGH)
                for k, v in self._recommendations.items()]
        return recs

    def show_group_help(self, index):
        widget = self._groups_model.widgets[index.row()]
        self.help.setPlainText(widget.HELP)
Ejemplo n.º 2
0
class Preferences(QDialog):

    run_wizard_requested = pyqtSignal()

    def __init__(self, gui, initial_plugin=None, close_after_initial=False):
        QDialog.__init__(self, gui)
        self.gui = gui
        self.must_restart = False
        self.do_restart = False
        self.committed = False
        self.close_after_initial = close_after_initial

        self.resize(930, 720)
        nh, nw = min_available_height() - 25, available_width() - 10
        if nh < 0:
            nh = 800
        if nw < 0:
            nw = 600
        nh = min(self.height(), nh)
        nw = min(self.width(), nw)
        self.resize(nw, nh)

        geom = gprefs.get('preferences dialog geometry', None)
        if geom is not None:
            self.restoreGeometry(geom)

        # Center
        if islinux:
            self.move(gui.rect().center() - self.rect().center())

        self.setWindowModality(Qt.ApplicationModal)
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences'))
        self.setWindowIcon(QIcon(I('config.png')))
        self.l = l = QVBoxLayout(self)

        self.stack = QStackedWidget(self)
        self.bb = QDialogButtonBox(QDialogButtonBox.Close
                                   | QDialogButtonBox.Apply
                                   | QDialogButtonBox.Discard
                                   | QDialogButtonBox.RestoreDefaults)
        self.bb.button(self.bb.Apply).clicked.connect(self.accept)
        self.bb.button(self.bb.Discard).clicked.connect(self.reject)
        self.bb.button(self.bb.RestoreDefaults).setIcon(
            QIcon(I('clear_left.png')))
        self.bb.button(self.bb.RestoreDefaults).clicked.connect(
            self.restore_defaults)
        self.wizard_button = self.bb.addButton(_('Run Welcome &wizard'),
                                               self.bb.ActionRole)
        self.wizard_button.setIcon(QIcon(I('wizard.png')))
        self.wizard_button.clicked.connect(self.run_wizard,
                                           type=Qt.QueuedConnection)
        self.wizard_button.setAutoDefault(False)
        self.bb.rejected.connect(self.reject)
        self.browser = Browser(self)
        self.browser.show_plugin.connect(self.show_plugin)
        self.stack.addWidget(self.browser)
        self.scroll_area = QScrollArea(self)
        self.stack.addWidget(self.scroll_area)
        self.scroll_area.setWidgetResizable(True)

        self.setContextMenuPolicy(Qt.NoContextMenu)
        self.title_bar = TitleBar(self)
        for ac, tt in [(self.bb.Apply, _('Save changes')),
                       (self.bb.Discard, _('Cancel and return to overview'))]:
            self.bb.button(ac).setToolTip(tt)

        l.addWidget(self.title_bar), l.addWidget(self.stack), l.addWidget(
            self.bb)

        if initial_plugin is not None:
            category, name = initial_plugin[:2]
            plugin = get_plugin(category, name)
            if plugin is not None:
                self.show_plugin(plugin)
                if len(initial_plugin) > 2:
                    w = self.findChild(QWidget, initial_plugin[2])
                    if w is not None:
                        for c in self.showing_widget.children():
                            if isinstance(c, QTabWidget):
                                idx = c.indexOf(w)
                                if idx > -1:
                                    c.setCurrentIndex(idx)
                                    break
        else:
            self.hide_plugin()

    def event(self, ev):
        if isinstance(ev, QStatusTipEvent):
            msg = re.sub(r'</?[a-z1-6]+>', ' ', ev.tip())
            self.title_bar.show_msg(msg)
        return QDialog.event(self, ev)

    def run_wizard(self):
        self.run_wizard_requested.emit()
        self.accept()

    def set_tooltips_for_labels(self):
        def process_child(child):
            for g in child.children():
                if isinstance(g, QLabel):
                    buddy = g.buddy()
                    if buddy is not None and hasattr(buddy, 'toolTip'):
                        htext = unicode_type(buddy.toolTip()).strip()
                        etext = unicode_type(g.toolTip()).strip()
                        if htext and not etext:
                            g.setToolTip(htext)
                            g.setWhatsThis(htext)
                else:
                    process_child(g)

        process_child(self.showing_widget)

    def show_plugin(self, plugin):
        self.showing_widget = plugin.create_widget(self.scroll_area)
        self.showing_widget.genesis(self.gui)
        self.showing_widget.initialize()
        self.set_tooltips_for_labels()
        self.scroll_area.setWidget(self.showing_widget)
        self.stack.setCurrentIndex(1)
        self.showing_widget.show()
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences') + ' - ' +
                            plugin.gui_name)
        self.showing_widget.restart_now.connect(self.restart_now)
        self.title_bar.show_plugin(plugin)
        self.setWindowIcon(QIcon(plugin.icon))

        self.bb.button(self.bb.Close).setVisible(False)
        self.wizard_button.setVisible(False)
        for button in (self.bb.Apply, self.bb.RestoreDefaults,
                       self.bb.Discard):
            button = self.bb.button(button)
            button.setVisible(True)

        self.bb.button(self.bb.Apply).setEnabled(False)
        self.bb.button(self.bb.Apply).setDefault(False), self.bb.button(
            self.bb.Apply).setDefault(True)
        self.bb.button(self.bb.RestoreDefaults).setEnabled(
            self.showing_widget.supports_restoring_to_defaults)
        self.bb.button(self.bb.RestoreDefaults).setToolTip(
            self.showing_widget.restore_defaults_desc if self.showing_widget.
            supports_restoring_to_defaults else (
                _('Restoring to defaults not supported for') + ' ' +
                plugin.gui_name))
        self.bb.button(self.bb.RestoreDefaults).setText(_('Restore &defaults'))
        self.showing_widget.changed_signal.connect(self.changed_signal)

    def changed_signal(self):
        b = self.bb.button(self.bb.Apply)
        b.setEnabled(True)

    def hide_plugin(self):
        for sig in 'changed_signal restart_now'.split():
            try:
                getattr(self.showing_widget,
                        sig).disconnect(getattr(self, sig))
            except Exception:
                pass
        self.showing_widget = QWidget(self.scroll_area)
        self.scroll_area.setWidget(self.showing_widget)
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences'))
        self.stack.setCurrentIndex(0)
        self.title_bar.show_plugin()
        self.setWindowIcon(QIcon(I('config.png')))

        for button in (self.bb.Apply, self.bb.RestoreDefaults,
                       self.bb.Discard):
            button = self.bb.button(button)
            button.setVisible(False)

        self.bb.button(self.bb.Close).setVisible(True)
        self.bb.button(self.bb.Close).setDefault(False), self.bb.button(
            self.bb.Close).setDefault(True)
        self.wizard_button.setVisible(True)

    def restart_now(self):
        try:
            self.showing_widget.commit()
        except AbortCommit:
            return
        self.do_restart = True
        self.hide_plugin()
        self.accept()

    def commit(self, *args):
        must_restart = self.showing_widget.commit()
        rc = self.showing_widget.restart_critical
        self.committed = True
        do_restart = False
        if must_restart:
            self.must_restart = True
            msg = _('Some of the changes you made require a restart.'
                    ' Please restart calibre as soon as possible.')
            if rc:
                msg = _('The changes you have made require calibre be '
                        'restarted immediately. You will not be allowed to '
                        'set any more preferences, until you restart.')

            do_restart = show_restart_warning(msg, parent=self)

        self.showing_widget.refresh_gui(self.gui)
        if do_restart:
            self.do_restart = True
        return self.close_after_initial or (must_restart and rc) or do_restart

    def restore_defaults(self, *args):
        self.showing_widget.restore_defaults()

    def on_shutdown(self):
        gprefs.set('preferences dialog geometry',
                   bytearray(self.saveGeometry()))
        if self.committed:
            self.gui.must_restart_before_config = self.must_restart
            self.gui.tags_view.recount()
            self.gui.create_device_menu()
            self.gui.set_device_menu_items_state(
                bool(self.gui.device_connected))
            self.gui.bars_manager.apply_settings()
            self.gui.bars_manager.update_bars()
            self.gui.build_context_menus()

    def accept(self):
        if self.stack.currentIndex() == 0:
            self.on_shutdown()
            return QDialog.accept(self)
        try:
            close = self.commit()
        except AbortCommit:
            return
        if close:
            self.on_shutdown()
            return QDialog.accept(self)
        self.hide_plugin()

    def reject(self):
        if self.stack.currentIndex() == 0 or self.close_after_initial:
            self.on_shutdown()
            return QDialog.reject(self)
        self.hide_plugin()
Ejemplo n.º 3
0
class FullFetch(QDialog):  # {{{
    def __init__(self, current_cover=None, parent=None):
        QDialog.__init__(self, parent)
        self.current_cover = current_cover
        self.log = Log()
        self.book = self.cover_pixmap = None

        self.setWindowTitle(_('Downloading metadata...'))
        self.setWindowIcon(QIcon(I('download-metadata.png')))

        self.stack = QStackedWidget()
        self.l = l = QVBoxLayout()
        self.setLayout(l)
        l.addWidget(self.stack)

        self.bb = QDialogButtonBox(QDialogButtonBox.Cancel
                                   | QDialogButtonBox.Ok)
        self.h = h = QHBoxLayout()
        l.addLayout(h)
        self.bb.rejected.connect(self.reject)
        self.bb.accepted.connect(self.accept)
        self.ok_button = self.bb.button(self.bb.Ok)
        self.ok_button.setEnabled(False)
        self.ok_button.clicked.connect(self.ok_clicked)
        self.prev_button = pb = QPushButton(QIcon(I('back.png')), _('&Back'),
                                            self)
        pb.clicked.connect(self.back_clicked)
        pb.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
        self.log_button = self.bb.addButton(_('&View log'), self.bb.ActionRole)
        self.log_button.clicked.connect(self.view_log)
        self.log_button.setIcon(QIcon(I('debug.png')))
        self.prev_button.setVisible(False)
        h.addWidget(self.prev_button), h.addWidget(self.bb)

        self.identify_widget = IdentifyWidget(self.log, self)
        self.identify_widget.rejected.connect(self.reject)
        self.identify_widget.results_found.connect(self.identify_results_found)
        self.identify_widget.book_selected.connect(self.book_selected)
        self.stack.addWidget(self.identify_widget)

        self.covers_widget = CoversWidget(self.log,
                                          self.current_cover,
                                          parent=self)
        self.covers_widget.chosen.connect(self.ok_clicked)
        self.stack.addWidget(self.covers_widget)

        self.resize(850, 600)
        geom = gprefs.get('metadata_single_gui_geom', None)
        if geom is not None and geom:
            self.restoreGeometry(geom)

        self.finished.connect(self.cleanup)

    def view_log(self):
        self._lv = LogViewer(self.log, self)

    def book_selected(self, book, caches):
        self.prev_button.setVisible(True)
        self.book = book
        self.stack.setCurrentIndex(1)
        self.log('\n\n')
        self.covers_widget.start(book, self.current_cover, self.title,
                                 self.authors, caches)
        self.ok_button.setFocus()

    def back_clicked(self):
        self.prev_button.setVisible(False)
        self.stack.setCurrentIndex(0)
        self.covers_widget.cancel()
        self.covers_widget.reset_covers()

    def accept(self):
        # Prevent the usual dialog accept mechanisms from working
        gprefs['metadata_single_gui_geom'] = bytearray(self.saveGeometry())
        if DEBUG_DIALOG:
            if self.stack.currentIndex() == 2:
                return QDialog.accept(self)
        else:
            if self.stack.currentIndex() == 1:
                return QDialog.accept(self)

    def reject(self):
        gprefs['metadata_single_gui_geom'] = bytearray(self.saveGeometry())
        self.identify_widget.cancel()
        self.covers_widget.cancel()
        return QDialog.reject(self)

    def cleanup(self):
        self.covers_widget.cleanup()

    def identify_results_found(self):
        self.ok_button.setEnabled(True)

    def next_clicked(self, *args):
        gprefs['metadata_single_gui_geom'] = bytearray(self.saveGeometry())
        self.identify_widget.get_result()

    def ok_clicked(self, *args):
        self.cover_pixmap = self.covers_widget.cover_pixmap()
        if self.stack.currentIndex() == 0:
            self.next_clicked()
            return
        if DEBUG_DIALOG:
            if self.cover_pixmap is not None:
                self.w = QLabel()
                self.w.setPixmap(self.cover_pixmap)
                self.stack.addWidget(self.w)
                self.stack.setCurrentIndex(2)
        else:
            QDialog.accept(self)

    def start(self, title=None, authors=None, identifiers={}):
        self.title, self.authors = title, authors
        self.identify_widget.start(title=title,
                                   authors=authors,
                                   identifiers=identifiers)
        return self.exec_()
Ejemplo n.º 4
0
class FullFetch(QDialog):  # {{{

    def __init__(self, current_cover=None, parent=None):
        QDialog.__init__(self, parent)
        self.current_cover = current_cover
        self.log = Log()
        self.book = self.cover_pixmap = None

        self.setWindowTitle(_('Downloading metadata...'))
        self.setWindowIcon(QIcon(I('download-metadata.png')))

        self.stack = QStackedWidget()
        self.l = l = QVBoxLayout()
        self.setLayout(l)
        l.addWidget(self.stack)

        self.bb = QDialogButtonBox(QDialogButtonBox.Cancel|QDialogButtonBox.Ok)
        self.h = h = QHBoxLayout()
        l.addLayout(h)
        self.bb.rejected.connect(self.reject)
        self.bb.accepted.connect(self.accept)
        self.ok_button = self.bb.button(self.bb.Ok)
        self.ok_button.setEnabled(False)
        self.ok_button.clicked.connect(self.ok_clicked)
        self.prev_button = pb = QPushButton(QIcon(I('back.png')), _('&Back'), self)
        pb.clicked.connect(self.back_clicked)
        pb.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
        self.log_button = self.bb.addButton(_('&View log'), self.bb.ActionRole)
        self.log_button.clicked.connect(self.view_log)
        self.log_button.setIcon(QIcon(I('debug.png')))
        self.prev_button.setVisible(False)
        h.addWidget(self.prev_button), h.addWidget(self.bb)

        self.identify_widget = IdentifyWidget(self.log, self)
        self.identify_widget.rejected.connect(self.reject)
        self.identify_widget.results_found.connect(self.identify_results_found)
        self.identify_widget.book_selected.connect(self.book_selected)
        self.stack.addWidget(self.identify_widget)

        self.covers_widget = CoversWidget(self.log, self.current_cover, parent=self)
        self.covers_widget.chosen.connect(self.ok_clicked)
        self.stack.addWidget(self.covers_widget)

        self.resize(850, 600)
        geom = gprefs.get('metadata_single_gui_geom', None)
        if geom is not None and geom:
            self.restoreGeometry(geom)

        self.finished.connect(self.cleanup)

    def view_log(self):
        self._lv = LogViewer(self.log, self)

    def book_selected(self, book, caches):
        self.prev_button.setVisible(True)
        self.book = book
        self.stack.setCurrentIndex(1)
        self.log('\n\n')
        self.covers_widget.start(book, self.current_cover,
                self.title, self.authors, caches)
        self.ok_button.setFocus()

    def back_clicked(self):
        self.prev_button.setVisible(False)
        self.stack.setCurrentIndex(0)
        self.covers_widget.cancel()
        self.covers_widget.reset_covers()

    def accept(self):
        # Prevent the usual dialog accept mechanisms from working
        gprefs['metadata_single_gui_geom'] = bytearray(self.saveGeometry())
        if DEBUG_DIALOG:
            if self.stack.currentIndex() == 2:
                return QDialog.accept(self)
        else:
            if self.stack.currentIndex() == 1:
                return QDialog.accept(self)

    def reject(self):
        gprefs['metadata_single_gui_geom'] = bytearray(self.saveGeometry())
        self.identify_widget.cancel()
        self.covers_widget.cancel()
        return QDialog.reject(self)

    def cleanup(self):
        self.covers_widget.cleanup()

    def identify_results_found(self):
        self.ok_button.setEnabled(True)

    def next_clicked(self, *args):
        gprefs['metadata_single_gui_geom'] = bytearray(self.saveGeometry())
        self.identify_widget.get_result()

    def ok_clicked(self, *args):
        self.cover_pixmap = self.covers_widget.cover_pixmap()
        if self.stack.currentIndex() == 0:
            self.next_clicked()
            return
        if DEBUG_DIALOG:
            if self.cover_pixmap is not None:
                self.w = QLabel()
                self.w.setPixmap(self.cover_pixmap)
                self.stack.addWidget(self.w)
                self.stack.setCurrentIndex(2)
        else:
            QDialog.accept(self)

    def start(self, title=None, authors=None, identifiers={}):
        self.title, self.authors = title, authors
        self.identify_widget.start(title=title, authors=authors,
                identifiers=identifiers)
        return self.exec_()
Ejemplo n.º 5
0
class Preferences(QMainWindow):

    run_wizard_requested = pyqtSignal()

    def __init__(self, gui, initial_plugin=None, close_after_initial=False):
        QMainWindow.__init__(self, gui)
        self.gui = gui
        self.must_restart = False
        self.committed = False
        self.close_after_initial = close_after_initial

        self.resize(930, 720)
        nh, nw = min_available_height() - 25, available_width() - 10
        if nh < 0:
            nh = 800
        if nw < 0:
            nw = 600
        nh = min(self.height(), nh)
        nw = min(self.width(), nw)
        self.resize(nw, nh)
        self.esc_action = QAction(self)
        self.addAction(self.esc_action)
        self.esc_action.setShortcut(QKeySequence(Qt.Key_Escape))
        self.esc_action.triggered.connect(self.esc)

        geom = gprefs.get('preferences_window_geometry', None)
        if geom is not None:
            self.restoreGeometry(geom)

        # Center
        if islinux:
            self.move(gui.rect().center() - self.rect().center())

        self.setWindowModality(Qt.WindowModal)
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences'))
        self.setWindowIcon(QIcon(I('config.png')))

        self.status_bar = StatusBar(self)
        self.setStatusBar(self.status_bar)

        self.stack = QStackedWidget(self)
        self.cw = QWidget(self)
        self.cw.setLayout(QVBoxLayout())
        self.cw.layout().addWidget(self.stack)
        self.bb = QDialogButtonBox(QDialogButtonBox.Close)
        self.wizard_button = self.bb.addButton(_('Run welcome wizard'),
                                               self.bb.ActionRole)
        self.wizard_button.setIcon(QIcon(I('wizard.png')))
        self.wizard_button.clicked.connect(self.run_wizard,
                                           type=Qt.QueuedConnection)
        self.cw.layout().addWidget(self.bb)
        self.bb.button(self.bb.Close).setDefault(True)
        self.bb.rejected.connect(self.close, type=Qt.QueuedConnection)
        self.setCentralWidget(self.cw)
        self.browser = Browser(self)
        self.browser.show_plugin.connect(self.show_plugin)
        self.stack.addWidget(self.browser)
        self.scroll_area = QScrollArea(self)
        self.stack.addWidget(self.scroll_area)
        self.scroll_area.setWidgetResizable(True)

        self.setContextMenuPolicy(Qt.NoContextMenu)
        self.bar = QToolBar(self)
        self.addToolBar(self.bar)
        self.bar.setVisible(False)
        self.bar.setIconSize(QSize(ICON_SIZE, ICON_SIZE))
        self.bar.setMovable(False)
        self.bar.setFloatable(False)
        self.bar.setToolButtonStyle(Qt.ToolButtonTextBesideIcon)
        self.apply_action = self.bar.addAction(QIcon(I('ok.png')), _('&Apply'),
                                               self.commit)
        self.cancel_action = self.bar.addAction(QIcon(I('window-close.png')),
                                                _('&Cancel'), self.cancel)
        self.bar_title = BarTitle(self.bar)
        self.bar.addWidget(self.bar_title)
        self.restore_action = self.bar.addAction(QIcon(I('clear_left.png')),
                                                 _('Restore &defaults'),
                                                 self.restore_defaults)
        for ac, tt in [('apply', _('Save changes')),
                       ('cancel', _('Cancel and return to overview'))]:
            ac = getattr(self, ac + '_action')
            ac.setToolTip(tt)
            ac.setWhatsThis(tt)
            ac.setStatusTip(tt)

        for ch in self.bar.children():
            if isinstance(ch, QToolButton):
                ch.setCursor(Qt.PointingHandCursor)
                ch.setAutoRaise(True)

        self.stack.setCurrentIndex(0)

        if initial_plugin is not None:
            category, name = initial_plugin
            plugin = get_plugin(category, name)
            if plugin is not None:
                self.show_plugin(plugin)

    def event(self, ev):
        if ev.type() == ev.StatusTip:
            msg = re.sub(r'</?[a-z1-6]+>', ' ', ev.tip())
            ev = QStatusTipEvent(msg)
        return QMainWindow.event(self, ev)

    def run_wizard(self):
        self.close()
        self.run_wizard_requested.emit()

    def set_tooltips_for_labels(self):
        def process_child(child):
            for g in child.children():
                if isinstance(g, QLabel):
                    buddy = g.buddy()
                    if buddy is not None and hasattr(buddy, 'toolTip'):
                        htext = unicode(buddy.toolTip()).strip()
                        etext = unicode(g.toolTip()).strip()
                        if htext and not etext:
                            g.setToolTip(htext)
                            g.setWhatsThis(htext)
                else:
                    process_child(g)

        process_child(self.showing_widget)

    def show_plugin(self, plugin):
        self.showing_widget = plugin.create_widget(self.scroll_area)
        self.showing_widget.genesis(self.gui)
        self.showing_widget.initialize()
        self.set_tooltips_for_labels()
        self.scroll_area.setWidget(self.showing_widget)
        self.stack.setCurrentIndex(1)
        self.showing_widget.show()
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences') + ' - ' +
                            plugin.gui_name)
        self.apply_action.setEnabled(False)
        self.showing_widget.changed_signal.connect(
            lambda: self.apply_action.setEnabled(True))
        self.showing_widget.restart_now.connect(self.restart_now)
        self.restore_action.setEnabled(
            self.showing_widget.supports_restoring_to_defaults)
        tt = self.showing_widget.restore_defaults_desc
        if not self.restore_action.isEnabled():
            tt = _('Restoring to defaults not supported for') + ' ' + \
                plugin.gui_name
        self.restore_action.setToolTip(textwrap.fill(tt))
        self.restore_action.setWhatsThis(textwrap.fill(tt))
        self.restore_action.setStatusTip(tt)
        self.bar_title.show_plugin(plugin)
        self.setWindowIcon(QIcon(plugin.icon))
        self.bar.setVisible(True)
        self.bb.setVisible(False)

    def hide_plugin(self):
        self.showing_widget = QWidget(self.scroll_area)
        self.scroll_area.setWidget(self.showing_widget)
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences'))
        self.bar.setVisible(False)
        self.stack.setCurrentIndex(0)
        self.setWindowIcon(QIcon(I('config.png')))
        self.bb.setVisible(True)

    def esc(self, *args):
        if self.stack.currentIndex() == 1:
            self.cancel()
        elif self.stack.currentIndex() == 0:
            self.close()

    def restart_now(self):
        try:
            self.showing_widget.commit()
        except AbortCommit:
            return
        self.hide_plugin()
        self.close()
        self.gui.quit(restart=True)

    def commit(self, *args):
        try:
            must_restart = self.showing_widget.commit()
        except AbortCommit:
            return
        rc = self.showing_widget.restart_critical
        self.committed = True
        do_restart = False
        if must_restart:
            self.must_restart = True
            msg = _('Some of the changes you made require a restart.'
                    ' Please restart calibre as soon as possible.')
            if rc:
                msg = _('The changes you have made require calibre be '
                        'restarted immediately. You will not be allowed to '
                        'set any more preferences, until you restart.')

            do_restart = show_restart_warning(msg, parent=self)

        self.showing_widget.refresh_gui(self.gui)
        self.hide_plugin()
        if self.close_after_initial or (must_restart and rc) or do_restart:
            self.close()
        if do_restart:
            self.gui.quit(restart=True)

    def cancel(self, *args):
        if self.close_after_initial:
            self.close()
        else:
            self.hide_plugin()

    def restore_defaults(self, *args):
        self.showing_widget.restore_defaults()

    def closeEvent(self, *args):
        gprefs.set('preferences_window_geometry',
                   bytearray(self.saveGeometry()))
        if self.committed:
            self.gui.must_restart_before_config = self.must_restart
            self.gui.tags_view.recount()
            self.gui.create_device_menu()
            self.gui.set_device_menu_items_state(
                bool(self.gui.device_connected))
            self.gui.bars_manager.apply_settings()
            self.gui.bars_manager.update_bars()
            self.gui.build_context_menus()

        return QMainWindow.closeEvent(self, *args)
Ejemplo n.º 6
0
class Preferences(QDialog):

    run_wizard_requested = pyqtSignal()

    def __init__(self, gui, initial_plugin=None, close_after_initial=False):
        QDialog.__init__(self, gui)
        self.gui = gui
        self.must_restart = False
        self.do_restart = False
        self.committed = False
        self.close_after_initial = close_after_initial

        self.resize(930, 720)
        nh, nw = min_available_height()-25, available_width()-10
        if nh < 0:
            nh = 800
        if nw < 0:
            nw = 600
        nh = min(self.height(), nh)
        nw = min(self.width(), nw)
        self.resize(nw, nh)

        geom = gprefs.get('preferences dialog geometry', None)
        if geom is not None:
            self.restoreGeometry(geom)

        # Center
        if islinux:
            self.move(gui.rect().center() - self.rect().center())

        self.setWindowModality(Qt.ApplicationModal)
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences'))
        self.setWindowIcon(QIcon(I('config.png')))
        self.l = l = QVBoxLayout(self)

        self.stack = QStackedWidget(self)
        self.bb = QDialogButtonBox(QDialogButtonBox.Close | QDialogButtonBox.Apply | QDialogButtonBox.Discard | QDialogButtonBox.RestoreDefaults)
        self.bb.button(self.bb.Apply).clicked.connect(self.accept)
        self.bb.button(self.bb.Discard).clicked.connect(self.reject)
        self.bb.button(self.bb.RestoreDefaults).setIcon(QIcon(I('clear_left.png')))
        self.bb.button(self.bb.RestoreDefaults).clicked.connect(self.restore_defaults)
        self.wizard_button = self.bb.addButton(_('Run Welcome &wizard'), self.bb.ActionRole)
        self.wizard_button.setIcon(QIcon(I('wizard.png')))
        self.wizard_button.clicked.connect(self.run_wizard, type=Qt.QueuedConnection)
        self.wizard_button.setAutoDefault(False)
        self.bb.rejected.connect(self.reject)
        self.browser = Browser(self)
        self.browser.show_plugin.connect(self.show_plugin)
        self.stack.addWidget(self.browser)
        self.scroll_area = QScrollArea(self)
        self.stack.addWidget(self.scroll_area)
        self.scroll_area.setWidgetResizable(True)

        self.setContextMenuPolicy(Qt.NoContextMenu)
        self.title_bar = TitleBar(self)
        for ac, tt in [(self.bb.Apply, _('Save changes')),
                (self.bb.Discard, _('Cancel and return to overview'))]:
            self.bb.button(ac).setToolTip(tt)

        l.addWidget(self.title_bar), l.addWidget(self.stack), l.addWidget(self.bb)

        if initial_plugin is not None:
            category, name = initial_plugin[:2]
            plugin = get_plugin(category, name)
            if plugin is not None:
                self.show_plugin(plugin)
                if len(initial_plugin) > 2:
                    w = self.findChild(QWidget, initial_plugin[2])
                    if w is not None:
                        for c in self.showing_widget.children():
                            if isinstance(c, QTabWidget):
                                idx = c.indexOf(w)
                                if idx > -1:
                                    c.setCurrentIndex(idx)
                                    break
        else:
            self.hide_plugin()

    def event(self, ev):
        if isinstance(ev, QStatusTipEvent):
            msg = re.sub(r'</?[a-z1-6]+>', ' ', ev.tip())
            self.title_bar.show_msg(msg)
        return QDialog.event(self, ev)

    def run_wizard(self):
        self.run_wizard_requested.emit()
        self.accept()

    def set_tooltips_for_labels(self):

        def process_child(child):
            for g in child.children():
                if isinstance(g, QLabel):
                    buddy = g.buddy()
                    if buddy is not None and hasattr(buddy, 'toolTip'):
                        htext = unicode_type(buddy.toolTip()).strip()
                        etext = unicode_type(g.toolTip()).strip()
                        if htext and not etext:
                            g.setToolTip(htext)
                            g.setWhatsThis(htext)
                else:
                    process_child(g)

        process_child(self.showing_widget)

    def show_plugin(self, plugin):
        self.showing_widget = plugin.create_widget(self.scroll_area)
        self.showing_widget.genesis(self.gui)
        self.showing_widget.initialize()
        self.set_tooltips_for_labels()
        self.scroll_area.setWidget(self.showing_widget)
        self.stack.setCurrentIndex(1)
        self.showing_widget.show()
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences') + ' - ' + plugin.gui_name)
        self.showing_widget.restart_now.connect(self.restart_now)
        self.title_bar.show_plugin(plugin)
        self.setWindowIcon(QIcon(plugin.icon))

        self.bb.button(self.bb.Close).setVisible(False)
        self.wizard_button.setVisible(False)
        for button in (self.bb.Apply, self.bb.RestoreDefaults, self.bb.Discard):
            button = self.bb.button(button)
            button.setVisible(True)

        self.bb.button(self.bb.Apply).setEnabled(False)
        self.bb.button(self.bb.Apply).setDefault(False), self.bb.button(self.bb.Apply).setDefault(True)
        self.bb.button(self.bb.RestoreDefaults).setEnabled(self.showing_widget.supports_restoring_to_defaults)
        self.bb.button(self.bb.RestoreDefaults).setToolTip(
            self.showing_widget.restore_defaults_desc if self.showing_widget.supports_restoring_to_defaults else
            (_('Restoring to defaults not supported for') + ' ' + plugin.gui_name))
        self.bb.button(self.bb.RestoreDefaults).setText(_('Restore &defaults'))
        self.showing_widget.changed_signal.connect(self.changed_signal)

    def changed_signal(self):
        b = self.bb.button(self.bb.Apply)
        b.setEnabled(True)

    def hide_plugin(self):
        for sig in 'changed_signal restart_now'.split():
            try:
                getattr(self.showing_widget, sig).disconnect(getattr(self, sig))
            except Exception:
                pass
        self.showing_widget = QWidget(self.scroll_area)
        self.scroll_area.setWidget(self.showing_widget)
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences'))
        self.stack.setCurrentIndex(0)
        self.title_bar.show_plugin()
        self.setWindowIcon(QIcon(I('config.png')))

        for button in (self.bb.Apply, self.bb.RestoreDefaults, self.bb.Discard):
            button = self.bb.button(button)
            button.setVisible(False)

        self.bb.button(self.bb.Close).setVisible(True)
        self.bb.button(self.bb.Close).setDefault(False), self.bb.button(self.bb.Close).setDefault(True)
        self.wizard_button.setVisible(True)

    def restart_now(self):
        try:
            self.showing_widget.commit()
        except AbortCommit:
            return
        self.do_restart = True
        self.hide_plugin()
        self.accept()

    def commit(self, *args):
        must_restart = self.showing_widget.commit()
        rc = self.showing_widget.restart_critical
        self.committed = True
        do_restart = False
        if must_restart:
            self.must_restart = True
            msg = _('Some of the changes you made require a restart.'
                    ' Please restart calibre as soon as possible.')
            if rc:
                msg = _('The changes you have made require calibre be '
                        'restarted immediately. You will not be allowed to '
                        'set any more preferences, until you restart.')

            do_restart = show_restart_warning(msg, parent=self)

        self.showing_widget.refresh_gui(self.gui)
        if do_restart:
            self.do_restart = True
        return self.close_after_initial or (must_restart and rc) or do_restart

    def restore_defaults(self, *args):
        self.showing_widget.restore_defaults()

    def on_shutdown(self):
        gprefs.set('preferences dialog geometry', bytearray(self.saveGeometry()))
        if self.committed:
            self.gui.must_restart_before_config = self.must_restart
            self.gui.tags_view.recount()
            self.gui.create_device_menu()
            self.gui.set_device_menu_items_state(bool(self.gui.device_connected))
            self.gui.bars_manager.apply_settings()
            self.gui.bars_manager.update_bars()
            self.gui.build_context_menus()

    def accept(self):
        if self.stack.currentIndex() == 0:
            self.on_shutdown()
            return QDialog.accept(self)
        try:
            close = self.commit()
        except AbortCommit:
            return
        if close:
            self.on_shutdown()
            return QDialog.accept(self)
        self.hide_plugin()

    def reject(self):
        if self.stack.currentIndex() == 0 or self.close_after_initial:
            self.on_shutdown()
            return QDialog.reject(self)
        self.hide_plugin()
Ejemplo n.º 7
0
class Preferences(QMainWindow):

    run_wizard_requested = pyqtSignal()

    def __init__(self, gui, initial_plugin=None, close_after_initial=False):
        QMainWindow.__init__(self, gui)
        self.gui = gui
        self.must_restart = False
        self.committed = False
        self.close_after_initial = close_after_initial

        self.resize(930, 720)
        nh, nw = min_available_height()-25, available_width()-10
        if nh < 0:
            nh = 800
        if nw < 0:
            nw = 600
        nh = min(self.height(), nh)
        nw = min(self.width(), nw)
        self.resize(nw, nh)
        self.esc_action = QAction(self)
        self.addAction(self.esc_action)
        self.esc_action.setShortcut(QKeySequence(Qt.Key_Escape))
        self.esc_action.triggered.connect(self.esc)

        geom = gprefs.get('preferences_window_geometry', None)
        if geom is not None:
            self.restoreGeometry(geom)

        # Center
        if islinux:
            self.move(gui.rect().center() - self.rect().center())

        self.setWindowModality(Qt.WindowModal)
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences'))
        self.setWindowIcon(QIcon(I('config.png')))

        self.status_bar = StatusBar(self)
        self.setStatusBar(self.status_bar)

        self.stack = QStackedWidget(self)
        self.cw = QWidget(self)
        self.cw.setLayout(QVBoxLayout())
        self.cw.layout().addWidget(self.stack)
        self.bb = QDialogButtonBox(QDialogButtonBox.Close)
        self.wizard_button = self.bb.addButton(_('Run welcome wizard'),
                self.bb.ActionRole)
        self.wizard_button.setIcon(QIcon(I('wizard.png')))
        self.wizard_button.clicked.connect(self.run_wizard,
                type=Qt.QueuedConnection)
        self.cw.layout().addWidget(self.bb)
        self.bb.button(self.bb.Close).setDefault(True)
        self.bb.rejected.connect(self.close, type=Qt.QueuedConnection)
        self.setCentralWidget(self.cw)
        self.browser = Browser(self)
        self.browser.show_plugin.connect(self.show_plugin)
        self.stack.addWidget(self.browser)
        self.scroll_area = QScrollArea(self)
        self.stack.addWidget(self.scroll_area)
        self.scroll_area.setWidgetResizable(True)

        self.setContextMenuPolicy(Qt.NoContextMenu)
        self.bar = QToolBar(self)
        self.addToolBar(self.bar)
        self.bar.setVisible(False)
        self.bar.setIconSize(QSize(ICON_SIZE, ICON_SIZE))
        self.bar.setMovable(False)
        self.bar.setFloatable(False)
        self.bar.setToolButtonStyle(Qt.ToolButtonTextBesideIcon)
        self.apply_action = self.bar.addAction(QIcon(I('ok.png')), _('&Apply'),
                self.commit)
        self.cancel_action = self.bar.addAction(QIcon(I('window-close.png')),
                _('&Cancel'),                self.cancel)
        self.bar_title = BarTitle(self.bar)
        self.bar.addWidget(self.bar_title)
        self.restore_action = self.bar.addAction(QIcon(I('clear_left.png')),
                _('Restore &defaults'), self.restore_defaults)
        for ac, tt in [('apply', _('Save changes')),
                ('cancel', _('Cancel and return to overview'))]:
            ac = getattr(self, ac+'_action')
            ac.setToolTip(tt)
            ac.setWhatsThis(tt)
            ac.setStatusTip(tt)

        for ch in self.bar.children():
            if isinstance(ch, QToolButton):
                ch.setCursor(Qt.PointingHandCursor)
                ch.setAutoRaise(True)

        self.stack.setCurrentIndex(0)

        if initial_plugin is not None:
            category, name = initial_plugin
            plugin = get_plugin(category, name)
            if plugin is not None:
                self.show_plugin(plugin)

    def run_wizard(self):
        self.close()
        self.run_wizard_requested.emit()

    def set_tooltips_for_labels(self):

        def process_child(child):
            for g in child.children():
                if isinstance(g, QLabel):
                    buddy = g.buddy()
                    if buddy is not None and hasattr(buddy, 'toolTip'):
                        htext = unicode(buddy.toolTip()).strip()
                        etext = unicode(g.toolTip()).strip()
                        if htext and not etext:
                            g.setToolTip(htext)
                            g.setWhatsThis(htext)
                else:
                    process_child(g)

        process_child(self.showing_widget)

    def show_plugin(self, plugin):
        self.showing_widget = plugin.create_widget(self.scroll_area)
        self.showing_widget.genesis(self.gui)
        self.showing_widget.initialize()
        self.set_tooltips_for_labels()
        self.scroll_area.setWidget(self.showing_widget)
        self.stack.setCurrentIndex(1)
        self.showing_widget.show()
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences') + ' - ' +
                plugin.gui_name)
        self.apply_action.setEnabled(False)
        self.showing_widget.changed_signal.connect(lambda :
                self.apply_action.setEnabled(True))
        self.showing_widget.restart_now.connect(self.restart_now)
        self.restore_action.setEnabled(self.showing_widget.supports_restoring_to_defaults)
        tt = self.showing_widget.restore_defaults_desc
        if not self.restore_action.isEnabled():
            tt = _('Restoring to defaults not supported for') + ' ' + \
                plugin.gui_name
        self.restore_action.setToolTip(textwrap.fill(tt))
        self.restore_action.setWhatsThis(textwrap.fill(tt))
        self.restore_action.setStatusTip(tt)
        self.bar_title.show_plugin(plugin)
        self.setWindowIcon(QIcon(plugin.icon))
        self.bar.setVisible(True)
        self.bb.setVisible(False)

    def hide_plugin(self):
        self.showing_widget = QWidget(self.scroll_area)
        self.scroll_area.setWidget(self.showing_widget)
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences'))
        self.bar.setVisible(False)
        self.stack.setCurrentIndex(0)
        self.setWindowIcon(QIcon(I('config.png')))
        self.bb.setVisible(True)

    def esc(self, *args):
        if self.stack.currentIndex() == 1:
            self.cancel()
        elif self.stack.currentIndex() == 0:
            self.close()

    def restart_now(self):
        try:
            self.showing_widget.commit()
        except AbortCommit:
            return
        self.hide_plugin()
        self.close()
        self.gui.quit(restart=True)

    def commit(self, *args):
        try:
            must_restart = self.showing_widget.commit()
        except AbortCommit:
            return
        rc = self.showing_widget.restart_critical
        self.committed = True
        do_restart = False
        if must_restart:
            self.must_restart = True
            msg = _('Some of the changes you made require a restart.'
                    ' Please restart calibre as soon as possible.')
            if rc:
                msg = _('The changes you have made require calibre be '
                        'restarted immediately. You will not be allowed to '
                        'set any more preferences, until you restart.')

            do_restart = show_restart_warning(msg, parent=self)

        self.showing_widget.refresh_gui(self.gui)
        self.hide_plugin()
        if self.close_after_initial or (must_restart and rc) or do_restart:
            self.close()
        if do_restart:
            self.gui.quit(restart=True)

    def cancel(self, *args):
        if self.close_after_initial:
            self.close()
        else:
            self.hide_plugin()

    def restore_defaults(self, *args):
        self.showing_widget.restore_defaults()

    def closeEvent(self, *args):
        gprefs.set('preferences_window_geometry',
                bytearray(self.saveGeometry()))
        if self.committed:
            self.gui.must_restart_before_config = self.must_restart
            self.gui.tags_view.recount()
            self.gui.create_device_menu()
            self.gui.set_device_menu_items_state(bool(self.gui.device_connected))
            self.gui.bars_manager.apply_settings()
            self.gui.bars_manager.update_bars()
            self.gui.build_context_menus()

        return QMainWindow.closeEvent(self, *args)