在GWT中设置所选文本(以便更容易复制粘贴)

像这样的?

public void onModuleLoad() {
    final Label word = new Label("some text");
    word.addClickHandler(new ClickHandler() {

        @Override
        public void onClick(ClickEvent event) {
            markText(word.getElement());
        }
    });
    word.getElement().setId("test");
    RootPanel.get().add(word);
}

private native void markText(Element elem) /*-{
    if ($doc.selection && $doc.selection.createRange) {
        var range = $doc.selection.createRange();
        range.moveToElementText(elem);
        range.select();
    } else if ($doc.createRange && $wnd.getSelection) {
        var range = $doc.createRange();
        range.selectNode(elem);
        var selection = $wnd.getSelection();
        selection.removeAllRanges();
        selection.addRange(range);
    }
}-*/;