本文整理匯總了TypeScript中aurelia-dependency-injection.Optional類的典型用法代碼示例。如果您正苦於以下問題：TypeScript Optional類的具體用法？TypeScript Optional怎麽用？TypeScript Optional使用的例子？那麽, 這裏精選的類代碼示例或許可以為您提供幫助。
在下文中一共展示了Optional類的5個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的TypeScript代碼示例。
示例1: it
it('createForCurrentScope', () => {
const container = new Container();
const standardValidator = {};
container.registerInstance(Validator, standardValidator);
const childContainer = container.createChild();
const factory = childContainer.get(ValidationControllerFactory);
const controller = factory.createForCurrentScope();
expect(controller.validator).toBe(standardValidator);
expect(container.get(Optional.of(ValidationController))).toBe(null);
expect(childContainer.get(Optional.of(ValidationController))).toBe(controller);
const customValidator = {};
expect(factory.createForCurrentScope(customValidator).validator).toBe(customValidator);
});示例2: function
return function(target, key, desc?) {
if (!type) {
// typescript
type = metadata.get(metadataType, target, key);
}
injectFn(target, key, desc, Optional.of(type));
};示例3: function
return function(target, key, desc?) {
if (type === undefined) {
// typescript
type = metadata.get('design:type', target, key);
}
inject(Optional.of(type))(target, key, desc ? desc : {});
};示例4: bind
public bind(binding: any, source: any, rulesOrController?: ValidationController | any, rules?: any) {
// identify the target element.
const target = getTargetDOMElement(binding, source);
// locate the controller.
let controller: ValidationController;
if (rulesOrController instanceof ValidationController) {
controller = rulesOrController;
} else {
controller = source.container.get(Optional.of(ValidationController));
rules = rulesOrController;
}
if (controller === null) {
throw new Error(`A ValidationController has not been registered.`);
}
controller.registerBinding(binding, target, rules);
binding.validationController = controller;
const trigger = this.getValidateTrigger(controller);
// tslint:disable-next-line:no-bitwise
if (trigger & validateTrigger.change) {
binding.standardUpdateSource = binding.updateSource;
// tslint:disable-next-line:only-arrow-functions
// tslint:disable-next-line:space-before-function-paren
binding.updateSource = function (value: any) {
this.standardUpdateSource(value);
this.validationController.validateBinding(this);
};
}
// tslint:disable-next-line:no-bitwise
if (trigger & validateTrigger.blur) {
binding.validateBlurHandler = () => {
this.taskQueue.queueMicroTask(() => controller.validateBinding(binding));
};
binding.validateTarget = target;
target.addEventListener('blur', binding.validateBlurHandler);
}
if (trigger !== validateTrigger.manual) {
binding.standardUpdateTarget = binding.updateTarget;
// tslint:disable-next-line:only-arrow-functions
// tslint:disable-next-line:space-before-function-paren
binding.updateTarget = function (value: any) {
this.standardUpdateTarget(value);
this.validationController.resetBinding(this);
};
}
}示例5: inject
/**@internal */
static inject() {
return [DOM.Element, Animator, Optional.of(DOM.boundary, true)];
}