阅读gwt中关于ONPaste事件的文本

Question

我遇到了在ONPASTE事件上获取文本的问题。假设我有5个文本框，并且我使用的是sinkEvent，那么我如何获得要粘贴到任何一个文本框中的文本呢

public abc() {
    super();
    TextBox t1 = new TextBox();
    TextBox t2 = new TextBox();
    TextBox t3 = new TextBox();
    TextBox t4 = new TextBox();
    TextBox t5 = new TextBox();

    sinkEvents( Event.ONPASTE );
}

@Override
public void onBrowserEvent(Event event) {
    super.onBrowserEvent( event );

    switch (DOM.eventGetType(event)) {
        case Event.ONPASTE:
            //Now here i want to read get the text which is going to be 
            //pasted in the any of the textbox
    }
}

Answer 1

您必须在textbox本身中捕获事件。您可以扩展textbox以在onpaste事件上触发事件，或者像这样快速而肮脏地执行此操作：

public abc() {
    super();
    TextBox t1 = new TextBox(){

        @Override
        public void onBrowserEvent(Event event) {
            super.onBrowserEvent(event);
            checkForPastEventAndDoSomething(event);
        }
    };
    //...
}

private void checkForPastEventAndDoSomething(Event event) {
    switch (event.getTypeInt()) {
                case Event.ONPASTE:
                //Now here i want to read get the text which is going to be 
                //pasted in the any of the textbox
                break;
}