本文整理汇总了TypeScript中aurelia-framework.ObserverLocator.getObserver方法的典型用法代码示例。如果您正苦于以下问题：TypeScript ObserverLocator.getObserver方法的具体用法？TypeScript ObserverLocator.getObserver怎么用？TypeScript ObserverLocator.getObserver使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类aurelia-framework.ObserverLocator的用法示例。
在下文中一共展示了ObserverLocator.getObserver方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1: valueChanged
public valueChanged(newValue: Command, oldValue: Command): void {
this.command = newValue;
if (oldValue) {
this.observerLocator
.getObserver(oldValue, "isExecuting")
.unsubscribe(this.onCommandIsExecutingChanged.bind(this));
this.observerLocator
.getObserver(oldValue, "canExecute")
.unsubscribe(this.onCommandCanExecuteChanged.bind(this));
}
if (newValue) {
this.observerLocator
.getObserver(newValue, "isExecuting")
.subscribe(this.onCommandIsExecutingChanged.bind(this));
this.observerLocator
.getObserver(newValue, "canExecute")
.subscribe(this.onCommandCanExecuteChanged.bind(this));
this.onCommandIsExecutingChanged(this.command.isExecuting, undefined);
this.onCommandCanExecuteChanged(this.command.canExecute, undefined);
}
}示例2: commandChanged
public commandChanged(newValue: Command, oldValue: Command) {
if (oldValue) {
this.observerLocator
.getObserver(oldValue, "error")
.unsubscribe(this.onCommandErrorChanged.bind(this));
}
if (newValue) {
this.observerLocator
.getObserver(newValue, "error")
.subscribe(this.onCommandErrorChanged.bind(this));
}
}示例3: observeProperties
observeProperties(properties, callback:IChangedPropertyCallback) {//:string[]|any
var subscriptions = [], object, internalCallback = (propertyName, source) => {
return (newValue, oldValue) => {
callback(propertyName, newValue, oldValue, source);
}
};
for(var propertyName in properties) {
object = properties[propertyName];
subscriptions.push(
this.observerLocator
.getObserver(object, propertyName)
.subscribe(internalCallback(propertyName, object)));
}
// return dispose function
return () => {
while(subscriptions.length) {
subscriptions.pop()();
}
}
}