class MyObject(event.Component):
att = event.Attribute()
# Props to test basic stuff
foo = event.AnyProp(6, settable=True, doc='can be anything')
bar = event.StringProp('xx') # not settable
# Props to test array mutations
eggs = event.ListProp([], settable=True)
eggs2 = event.ListProp(settable=True)
eggs3 = event.ListProp([3, 4])
# All kinds of props, defaults
anyprop = event.AnyProp(doc='can be anything', settable=True)
boolprop = event.BoolProp(settable=True)
tristateprop = event.TriStateProp(settable=True)
intprop = event.IntProp(settable=True)
floatprop = event.FloatProp(settable=True)
stringprop = event.StringProp(settable=True)
tupleprop = event.TupleProp(settable=True)
listprop = event.ListProp(settable=True)
dictprop = event.DictProp(settable=True)
componentprop = event.ComponentProp(settable=True) # can be None
# nullprop = event.NullProp(None, settable=True)
# eitherprop = event.EitherProp(event.IntProp, event.NoneProp)
_privateprop = event.IntProp(settable=True)
class Node(event.Component):
val = event.IntProp(settable=True)
parent = event.ComponentProp(settable=True)
children = event.TupleProp(settable=True)
@event.reaction('parent.val')
def handle_parent_val(self, *events):
xx = []
for ev in events:
if self.parent:
xx.append(self.parent.val)
else:
xx.append(None)
print('parent.val ' + ', '.join([str(x) for x in xx]))
@event.reaction('children*.val')
def handle_children_val(self, *events):
xx = []
for ev in events:
if isinstance(ev.new_value, (int, float)):
xx.append(ev.new_value)
else:
xx.append(None)
print('children.val ' + ', '.join([str(x) for x in xx]))
class MyDefaults(event.Component):
# Custom defaults
anyprop2 = event.AnyProp(7, doc='can be anything')
boolprop2 = event.BoolProp(True)
intprop2 = event.IntProp(-9)
floatprop2 = event.FloatProp(800.45)
stringprop2 = event.StringProp('heya')
tupleprop2 = event.TupleProp((2, 'xx'))
listprop2 = event.ListProp([3, 'yy'])
dictprop2 = event.DictProp({'foo':3, 'bar': 4})
componentprop2 = event.ComponentProp(None)
class Example(event.Component):
foo = event.AnyProp(settable=True, doc='This can be anything.')
bar = event.IntProp(10, doc='This is an int.')
eggs = event.TupleProp(settable=True)
@event.action
def raise_the_bar(self):
""" Action to change the value of bar. """
self._mutate_bar(self.bar + 1)
@event.reaction
def _report(self):
# This gets automatically called when any of the used properties change
print('foo is', self.foo)
print('bar is', self.bar)
print('eggs is', self.eggs)
class Tester(event.Component):
children = event.TupleProp(settable=True)
@event.reaction('children**.foo')
def track_deep(self, *events):
for ev in events:
if ev.new_value:
print(ev.new_value)
@event.action
def set_foos(self, prefix):
for i, child in enumerate(self.children):
child.set_foo(prefix + str(i))
for j, subchild in enumerate(child.children):
subchild.set_foo(prefix + str(i) + str(j))
@event.action
def make_children1(self):
t1 = TestOb()
t2 = TestOb()
t1.set_children((TestOb(), ))
t2.set_children((TestOb(), ))
self.set_children(t1, t2)
@event.action
def make_children2(self):
for i, child in enumerate(self.children):
child.set_children(child.children + (TestOb(), ))
@event.action
def make_children3(self):
# See issue #460
t = TestOb()
my_children = self.children
self.set_children(my_children + (t, ))
for i, child in enumerate(my_children):
child.set_children(child.children + (t, ))
self.set_children(my_children)
class MyComponent(event.Component):
a = event.AnyProp()
aa = event.TupleProp()
class TestOb(event.Component):
children = event.TupleProp(settable=True)
foo = event.StringProp(settable=True)
class Example(ui.Widget):
persons = event.TupleProp((), doc=""" People to show cards for""")
first_name = event.StringProp('', settable=True)
last_name = event.StringProp('', settable=True)
@event.action
def add_person(self, name, info):
""" Add a person to our stack.
"""
ppl = list(self.persons)
ppl.append((name, info))
self._mutate_persons(ppl)
def _button_clicked(self, *events):
self.add_person(self.first_name, self.last_name)
def _render_dom(self):
""" This function gets automatically called when needed; Flexx is aware
of what properties are used here.
"""
# Create form elements
form_nodes = [
ui.create_element(
'div', {'class': 'form-group mb-2'},
ui.create_element(
'input', {
'class': 'form-control',
'id': 'inputFirstName',
'oninput':
lambda e: self.set_first_name(e.target.value)
}, 'First name')),
ui.create_element(
'div', {'class': 'form-group mx-sm-3 mb-2'},
ui.create_element(
'input', {
'class': 'form-control',
'id': 'inputLastName',
'oninput': lambda e: self.set_last_name(e.target.value)
}, 'Last name')),
ui.create_element('button', {
'class': 'btn btn-primary mb-2',
'onclick': self._button_clicked
}, 'Submit'),
]
# Create virtual DOM nodes for all persons. We use bootstrap cards
card_nodes = []
for name, info in self.persons:
person_node = ui.create_element(
'div', {'class': 'card'},
ui.create_element(
'div',
{'class': 'card-body'},
ui.create_element('h5', {'class': 'card-title'}, name),
ui.create_element('p', {'class': 'card-text'}, info),
))
card_nodes.append(person_node)
# Compose finaly DOM tree
return ui.create_element(
'div', {},
ui.create_element('div', {'class': 'form-inline'}, form_nodes),
*card_nodes)
