Python QListView.selectionModel方法代码示例

# 需要导入模块: from PyQt4.Qt import QListView [as 别名]
# 或者: from PyQt4.Qt.QListView import selectionModel [as 别名]
class EditRules(QWidget): # {{{

    changed = pyqtSignal()

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

        self.l = l = QGridLayout(self)
        self.setLayout(l)

        self.l1 = l1 = QLabel('<p>'+_(
            'You can control the color of columns in the'
            ' book list by creating "rules" that tell calibre'
            ' what color to use. Click the Add Rule button below'
            ' to get started.<p>You can <b>change an existing rule</b> by double'
            ' clicking it.'))
        l1.setWordWrap(True)
        l.addWidget(l1, 0, 0, 1, 2)

        self.add_button = QPushButton(QIcon(I('plus.png')), _('Add Rule'),
                self)
        self.remove_button = QPushButton(QIcon(I('minus.png')),
                _('Remove Rule'), self)
        self.add_button.clicked.connect(self.add_rule)
        self.remove_button.clicked.connect(self.remove_rule)
        l.addWidget(self.add_button, 1, 0)
        l.addWidget(self.remove_button, 1, 1)

        self.g = g = QGridLayout()
        self.rules_view = QListView(self)
        self.rules_view.doubleClicked.connect(self.edit_rule)
        self.rules_view.setSelectionMode(self.rules_view.SingleSelection)
        self.rules_view.setAlternatingRowColors(True)
        self.rtfd = RichTextDelegate(parent=self.rules_view, max_width=400)
        self.rules_view.setItemDelegate(self.rtfd)
        g.addWidget(self.rules_view, 0, 0, 2, 1)

        self.up_button = b = QToolButton(self)
        b.setIcon(QIcon(I('arrow-up.png')))
        b.setToolTip(_('Move the selected rule up'))
        b.clicked.connect(self.move_up)
        g.addWidget(b, 0, 1, 1, 1, Qt.AlignTop)
        self.down_button = b = QToolButton(self)
        b.setIcon(QIcon(I('arrow-down.png')))
        b.setToolTip(_('Move the selected rule down'))
        b.clicked.connect(self.move_down)
        g.addWidget(b, 1, 1, 1, 1, Qt.AlignBottom)

        l.addLayout(g, 2, 0, 1, 2)
        l.setRowStretch(2, 10)

        self.add_advanced_button = b = QPushButton(QIcon(I('plus.png')),
                _('Add Advanced Rule'), self)
        b.clicked.connect(self.add_advanced)
        l.addWidget(b, 3, 0, 1, 2)

    def initialize(self, fm, prefs, mi):
        self.model = RulesModel(prefs, fm)
        self.rules_view.setModel(self.model)
        self.fm = fm
        self.mi = mi

    def _add_rule(self, dlg):
        if dlg.exec_() == dlg.Accepted:
            col, r = dlg.rule
            if r and col:
                idx = self.model.add_rule(col, r)
                self.rules_view.scrollTo(idx)
                self.changed.emit()

    def add_rule(self):
            d = RuleEditor(self.model.fm)
            d.add_blank_condition()
            self._add_rule(d)

    def add_advanced(self):
        td = TemplateDialog(self, '', mi=self.mi, fm=self.fm, color_field='')
        self._add_rule(td)

    def edit_rule(self, index):
        try:
            col, rule = self.model.data(index, Qt.UserRole)
        except:
            return
        if isinstance(rule, Rule):
            d = RuleEditor(self.model.fm)
            d.apply_rule(col, rule)
        else:
            d = TemplateDialog(self, rule, mi=self.mi, fm=self.fm, color_field=col)
        if d.exec_() == d.Accepted:
            col, r = d.rule
            if r is not None and col:
                self.model.replace_rule(index, col, r)
                self.rules_view.scrollTo(index)
                self.changed.emit()

    def get_selected_row(self, txt):
        sm = self.rules_view.selectionModel()
        rows = list(sm.selectedRows())
        if not rows:
#.........这里部分代码省略.........

# 需要导入模块: from PyQt4.Qt import QListView [as 别名]
# 或者: from PyQt4.Qt.QListView import selectionModel [as 别名]

#.........这里部分代码省略.........
    def enabled_toggled(self):
        enabled = self.enabled.isChecked()
        for x in ('add_advanced_button', 'rules_view', 'up_button', 'down_button', 'add_button', 'remove_button'):
            getattr(self, x).setEnabled(enabled)

    def add_rule(self):
        d = RuleEditor(self.model.fm, self.pref_name)
        d.add_blank_condition()
        if d.exec_() == d.Accepted:
            kind, col, r = d.rule
            if kind and r and col:
                idx = self.model.add_rule(kind, col, r)
                self.rules_view.scrollTo(idx)
                self.changed.emit()

    def add_advanced(self):
        if self.pref_name == 'column_color_rules':
            td = TemplateDialog(self, '', mi=self.mi, fm=self.fm, color_field='')
            if td.exec_() == td.Accepted:
                col, r = td.rule
                if r and col:
                    idx = self.model.add_rule('color', col, r)
                    self.rules_view.scrollTo(idx)
                    self.changed.emit()
        else:
            td = TemplateDialog(self, '', mi=self.mi, fm=self.fm, icon_field_key='')
            if td.exec_() == td.Accepted:
                print(td.rule)
                typ, col, r = td.rule
                if typ and r and col:
                    idx = self.model.add_rule(typ, col, r)
                    self.rules_view.scrollTo(idx)
                    self.changed.emit()

    def edit_rule(self, index):
        try:
            kind, col, rule = self.model.data(index, Qt.UserRole)
        except:
            return
        if isinstance(rule, Rule):
            d = RuleEditor(self.model.fm, self.pref_name)
            d.apply_rule(kind, col, rule)
        elif self.pref_name == 'column_color_rules':
            d = TemplateDialog(self, rule, mi=self.mi, fm=self.fm, color_field=col)
        else:
            d = TemplateDialog(self, rule, mi=self.mi, fm=self.fm, icon_field_key=col,
                               icon_rule_kind=kind)

        if d.exec_() == d.Accepted:
            if len(d.rule) == 2:  # Convert template dialog rules to a triple
                d.rule = ('color', d.rule[0], d.rule[1])
            kind, col, r = d.rule
            if kind and r is not None and col:
                self.model.replace_rule(index, kind, col, r)
                self.rules_view.scrollTo(index)
                self.changed.emit()

    def get_selected_row(self, txt):
        sm = self.rules_view.selectionModel()
        rows = list(sm.selectedRows())
        if not rows:
            error_dialog(self, _('No rule selected'),
                    _('No rule selected for %s.')%txt, show=True)
            return None
        return rows[0]

    def remove_rule(self):
        row = self.get_selected_row(_('removal'))
        if row is not None:
            self.model.remove_rule(row)
            self.changed.emit()

    def move_up(self):
        idx = self.rules_view.currentIndex()
        if idx.isValid():
            idx = self.model.move(idx, -1)
            if idx is not None:
                sm = self.rules_view.selectionModel()
                sm.select(idx, sm.ClearAndSelect)
                self.rules_view.setCurrentIndex(idx)
                self.changed.emit()

    def move_down(self):
        idx = self.rules_view.currentIndex()
        if idx.isValid():
            idx = self.model.move(idx, 1)
            if idx is not None:
                sm = self.rules_view.selectionModel()
                sm.select(idx, sm.ClearAndSelect)
                self.rules_view.setCurrentIndex(idx)
                self.changed.emit()

    def clear(self):
        self.model.clear()
        self.changed.emit()

    def commit(self, prefs):
        self.model.commit(prefs)
        if self.pref_name == 'cover_grid_icon_rules':
            gprefs['show_emblems'] = self.enabled.isChecked()