public function __construct(Emitter $emitter)
{
$this->emitter = $emitter;
parent::__construct(function () use($emitter) {
$emitter->emit();
});
}
function testEventFilter()
{
$click = new observr\Emitter('click');
$doOK = $click->filter(function ($button, $e) {
if ($button instanceof Mock\Button) {
return true;
}
return false;
})->map(function ($button, $e) {
$button->value = 'Ok';
});
$button = new Mock\Button();
$c = 0;
$button->attach($click, function ($sender, $e) use(&$c) {
$c++;
});
$doOK($button);
$this->assertEquals(1, $c);
$this->assertEquals('Ok', $button->value);
}