Python QListWidget.setCurrentRow方法代码示例

# 需要导入模块: from PyQt5.Qt import QListWidget [as 别名]
# 或者: from PyQt5.Qt.QListWidget import setCurrentRow [as 别名]
class ChooseFormatDialog(QDialog):

    def __init__(self, window, msg, formats, show_open_with=False):
        QDialog.__init__(self, window)
        self.resize(507, 377)
        self.setWindowIcon(QIcon(I("mimetypes/unknown.png")))
        self.setWindowTitle(_('Choose format'))
        self.l = l = QVBoxLayout(self)
        self.msg = QLabel(msg)
        l.addWidget(self.msg)
        self.formats = QListWidget(self)
        self.formats.setIconSize(QSize(64, 64))
        self.formats.activated[QModelIndex].connect(self.activated_slot)
        l.addWidget(self.formats)
        self.h = h = QHBoxLayout()
        h.setContentsMargins(0, 0, 0, 0)
        l.addLayout(h)
        if show_open_with:
            self.owb = QPushButton(_('&Open with...'), self)
            self.formats.currentRowChanged.connect(self.update_open_with_button)
            h.addWidget(self.owb)
            self.own = QMenu(self.owb.text())
            self.owb.setMenu(self.own)
            self.own.aboutToShow.connect(self.populate_open_with)
        self.buttonBox = bb = QDialogButtonBox(self)
        bb.setStandardButtons(QDialogButtonBox.Ok|QDialogButtonBox.Cancel)
        bb.accepted.connect(self.accept), bb.rejected.connect(self.reject)
        h.addStretch(10), h.addWidget(self.buttonBox)

        for format in formats:
            self.formats.addItem(QListWidgetItem(file_icon_provider().icon_from_ext(format.lower()),
                                                 format.upper()))
        self._formats = formats
        self.formats.setCurrentRow(0)
        self._format = self.open_with_format = None
        if show_open_with:
            self.populate_open_with()
            self.update_open_with_button()

    def populate_open_with(self):
        from calibre.gui2.open_with import populate_menu, edit_programs
        menu = self.own
        menu.clear()
        fmt = self._formats[self.formats.currentRow()]

        def connect_action(ac, entry):
            connect_lambda(ac.triggered, self, lambda self: self.open_with(entry))

        populate_menu(menu, connect_action, fmt)
        if len(menu.actions()) == 0:
            menu.addAction(_('Open %s with...') % fmt.upper(), self.choose_open_with)
        else:
            menu.addSeparator()
            menu.addAction(_('Add other application for %s files...') % fmt.upper(), self.choose_open_with)
            menu.addAction(_('Edit "Open with" applications...'), partial(edit_programs, fmt, self))

    def update_open_with_button(self):
        fmt = self._formats[self.formats.currentRow()]
        self.owb.setText(_('Open %s with...') % fmt)

    def open_with(self, entry):
        self.open_with_format = (self._formats[self.formats.currentRow()], entry)
        self.accept()

    def choose_open_with(self):
        from calibre.gui2.open_with import choose_program
        fmt = self._formats[self.formats.currentRow()]
        entry = choose_program(fmt, self)
        if entry is not None:
            self.open_with(entry)

    def book_converted(self, book_id, fmt):
        fmt = fmt.upper()
        if fmt not in self._formats:
            self._formats.append(fmt)
            self.formats.addItem(QListWidgetItem(
                file_icon_provider().icon_from_ext(fmt.lower()), fmt.upper()))

    def activated_slot(self, *args):
        self.accept()

    def format(self):
        return self._format

    def accept(self):
        self._format = self._formats[self.formats.currentRow()]
        return QDialog.accept(self)

# 需要导入模块: from PyQt5.Qt import QListWidget [as 别名]
# 或者: from PyQt5.Qt.QListWidget import setCurrentRow [as 别名]
class SavedSearchEditor(Dialog):

    def __init__(self, parent, initial_search=None):
        self.initial_search = initial_search
        Dialog.__init__(
            self, _('Manage saved searches'), 'manage-saved-searches', parent)

    def setup_ui(self):
        from calibre.gui2.ui import get_gui
        db = get_gui().current_db
        self.l = l = QVBoxLayout(self)
        b = self.bb.addButton(_('&Add search'), self.bb.ActionRole)
        b.setIcon(QIcon(I('plus.png')))
        b.clicked.connect(self.add_search)

        b = self.bb.addButton(_('&Remove search'), self.bb.ActionRole)
        b.setIcon(QIcon(I('minus.png')))
        b.clicked.connect(self.del_search)

        b = self.bb.addButton(_('&Edit search'), self.bb.ActionRole)
        b.setIcon(QIcon(I('modified.png')))
        b.clicked.connect(self.edit_search)

        self.slist = QListWidget(self)
        self.slist.setStyleSheet('QListView::item { padding: 3px }')
        self.slist.activated.connect(self.edit_search)
        self.slist.setAlternatingRowColors(True)
        self.searches = {name: db.saved_search_lookup(name) for name in db.saved_search_names()}
        self.populate_search_list()
        if self.initial_search is not None and self.initial_search in self.searches:
            self.select_search(self.initial_search)
        elif self.searches:
            self.slist.setCurrentRow(0)
        self.slist.currentItemChanged.connect(self.current_index_changed)
        l.addWidget(self.slist)

        self.desc = la = QLabel('\xa0')
        la.setWordWrap(True)
        l.addWidget(la)

        l.addWidget(self.bb)
        self.current_index_changed(self.slist.currentItem())
        self.setMinimumHeight(500)
        self.setMinimumWidth(600)

    @property
    def current_search_name(self):
        i = self.slist.currentItem()
        if i is not None:
            ans = i.text()
            if ans in self.searches:
                return ans

    def populate_search_list(self):
        self.slist.clear()
        for name in sorted(self.searches.keys(), key=sort_key):
            self.slist.addItem(name)

    def add_search(self):
        d = AddSavedSearch(parent=self, commit_changes=False)
        if d.exec_() != d.Accepted:
            return
        name, expression = d.accepted_data
        nmap = {icu_lower(n):n for n in self.searches}
        if icu_lower(name) in nmap:
            q = nmap[icu_lower(name)]
            del self.searches[q]
            self.select_search(q)
            self.slist.takeItem(self.slist.currentRow())
        self.searches[name] = expression
        self.slist.insertItem(0, name)
        self.slist.setCurrentRow(0)
        self.current_index_changed(self.slist.currentItem())

    def del_search(self):
        n = self.current_search_name
        if n is not None:
            if not confirm(
                '<p>' + _(
                    'The current saved search will be '
                    '<b>permanently deleted</b>. Are you sure?') + '</p>',
                'saved_search_editor_delete', self):
                return
            self.slist.takeItem(self.slist.currentRow())
            del self.searches[n]

    def edit_search(self):
        n = self.current_search_name
        if not n:
            return
        d = AddSavedSearch(parent=self, commit_changes=False, label=_('Edit the name and/or expression below.'), validate=self.validate_edit)
        d.setWindowTitle(_('Edit saved search'))
        d.sname.setText(n)
        d.search.setText(self.searches[n])
        if d.exec_() != d.Accepted:
            return
        name, expression = d.accepted_data
        self.slist.currentItem().setText(name)
        del self.searches[n]
        self.searches[name] = expression
#.........这里部分代码省略.........