GWT: How to suppress hyperlink so that it doesn

问题:

I want to make my hyperlinks act like buttons (only respond to Click event) however, they change the history token automatically when you click on them, which messes up my history mechanism in my application. Is there a way to suppress the default behaviour of the hyperlink so it doesn't change the history token? I tried setting targetHistoryToken to null but it didn't work.

Thanks,

回答1:

Use Anchor instead.

As java doc of Hyperlink says:

If you want an HTML hyperlink ( tag) without interacting with the history system, use Anchor instead.

回答2:

The easiest way by far to do this is to create your own class that extends Composite, and just renders an <a> </a> as a HTML widget. I had this same problem and that's how I got around it.

回答3:

Like rustyshelf says,

final HTML contactLink = new HTML(""
          + contactName + "");
contactLink.addClickHandler(new ClickHandler() {
        public void onClick(ClickEvent event) {
  .....
 }
}

http://gwt.google.com/samples/Showcase/Showcase.html#CwStackPanel

回答4:

Just remove href="" from Anchor.

<g:Anchor ui:field="clickField">Click here</g:Anchor>

回答5:

I created this class

import com.google.gwt.user.client.ui.HTML;

public class HyperlinkWithoutHistoryToken extends HTML {
    public HyperlinkWithoutHistoryToken(String html, boolean wordWrap) {
        super("<a href=\"javascript:undefined;\">" + html + "</a>", wordWrap);
    }
    public HyperlinkWithoutHistoryToken(String html) {
    super("<a href=\"javascript:undefined;\">" + html + "</a>");
    }
}