Python param.Action方法代码示例

# 需要导入模块: import param [as 别名]
# 或者: from param import Action [as 别名]
def test_action_param(document, comm):
    class Test(param.Parameterized):
        a = param.Action(lambda x: setattr(x, 'b', 2))
        b = param.Number(default=1)

    test = Test()
    test_pane = Pane(test)
    model = test_pane.get_root(document, comm=comm)

    button = model.children[1]
    assert isinstance(button, Button)

    # Check that the action is actually executed
    pn_button = test_pane.layout[1]
    pn_button.clicks = 1

    assert test.b == 2 

# 需要导入模块: import param [as 别名]
# 或者: from param import Action [as 别名]
def test_param_label(document, comm):
    class Test(param.Parameterized):
        a = param.Number(default=1.2, bounds=(0, 5), label='A')
        b = param.Action(label='B')

    test = Test()
    test_pane = Pane(test)

    # Check updating label changes widget name
    a_param = test.param['a']
    a_param.label = 'B'
    assert test_pane._widgets['a'].name == 'B'

    b_param = test.param['b']
    b_param.label = 'C'
    assert test_pane._widgets['b'].name == 'C' 

# 需要导入模块: import param [as 别名]
# 或者: from param import Action [as 别名]
def test_param_js_callbacks(document, comm):
    class JsButton(param.Parameterized):
        param_btn = param.Action(lambda self: print('Action Python Response'), label='Action')

    param_button = Param(JsButton())
    code = "console.log('Action button clicked')"
    param_button[1].js_on_click(code=code)

    model = param_button.get_root(document, comm=comm)

    button = model.children[1]
    assert len(button.js_event_callbacks) == 1
    callbacks = button.js_event_callbacks
    assert 'button_click' in callbacks
    assert len(callbacks['button_click']) == 1
    assert code in callbacks['button_click'][0].code 

# 需要导入模块: import param [as 别名]
# 或者: from param import Action [as 别名]
def ActionButton(*args, **kw):
    """Returns a ipywidgets.Button executing a paramnb.Action."""
    kw['description'] = str(kw['name'])
    value = kw["value"]
    w = ipywidgets.Button(*args,**kw)
    if value: w.on_click(value)
    return w 

# 需要导入模块: import param [as 别名]
# 或者: from param import Action [as 别名]
def on_msg(self, msg):
        p_name = msg['p_name']
        p_obj = self.parameterized.params(p_name)
        if isinstance(p_obj, param.Action):
            getattr(self.parameterized, p_name)(self.parameterized)
            return
        w = self._widgets[p_name]
        self._queue.append((w, p_obj, p_name, None, None, msg['value']))
        self.change_event() 

# 需要导入模块: import param [as 别名]
# 或者: from param import Action [as 别名]
def setUp(self):
        super(TestParamsStream, self).setUp()
        class Inner(param.Parameterized):

            x = param.Number(default = 0)
            y = param.Number(default = 0)

        class InnerAction(Inner):

            action = param.Action(lambda o: o.param.trigger('action'))

        self.inner = Inner
        self.inner_action = InnerAction 

# 需要导入模块: import param [as 别名]
# 或者: from param import Action [as 别名]
def widgets(self):
        """Return name,widget boxes for all parameters (i.e., a property sheet)"""

        params = self.parameterized.params().items()
        key_fn = lambda x: x[1].precedence if x[1].precedence is not None else self.p.default_precedence
        sorted_precedence = sorted(params, key=key_fn)
        outputs = [k for k, p in sorted_precedence if isinstance(p, _View)]
        filtered = [(k,p) for (k,p) in sorted_precedence
                    if ((p.precedence is None) or (p.precedence >= self.p.display_threshold))
                    and k not in outputs]
        groups = itertools.groupby(filtered, key=key_fn)
        sorted_groups = [sorted(grp) for (k,grp) in groups]
        ordered_params = [el[0] for group in sorted_groups for el in group]

        # Format name specially
        ordered_params.pop(ordered_params.index('name'))
        widgets = [Div(text='<b>{0}</b>'.format(self.parameterized.name))]

        def format_name(pname):
            p = self.parameterized.params(pname)
            # omit name for buttons, which already show the name on the button
            name = "" if issubclass(type(p),param.Action) else pname
            return Div(text=name)

        if self.p.show_labels:
            widgets += [self.widget(pname) for pname in ordered_params]
        else:
            widgets += [self.widget(pname) for pname in ordered_params]

        if self.p.button and not (self.p.callback is None and self.p.next_n==0):
            display_button = Button(label=self.p.button_text)
            def click_cb():
                # Execute and clear changes since last button press
                try:
                    self.execute(self._changed)
                except Exception as e:
                    self._changed.clear()
                    raise e
                self._changed.clear()
            display_button.on_click(click_cb)
            widgets.append(display_button)

        outputs = [self.widget(pname) for pname in outputs]
        return widgets, outputs