ConfirmLink Ajax + Fallback anyone?

[Johannes Schneider <ma...@cedarsoft.com>]

Hi,

I think that is one of that components that has been created several
times out there.
Does anybody have a good implementation available?

There is a wiki page that contains both types of confirmation links
(http://cwiki.apache.org/WICKET/getting-user-confirmation.html) but not
a combination of both.



Thanks,

Johannes

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Re: ConfirmLink Ajax + Fallback anyone?

[Johannes Schneider <ma...@cedarsoft.com>]

Ok, I have created some classes that seem to work. Could anyone take a
look at it and give any feedback?
What about the styles for the confirmation page? How should those be added?


Thanks

Johannes

/**
 * A confirmation link that uses JavaScript if available.
 */
public class ConfirmationLink extends AjaxFallbackLink<Object> {
  @NotNull
  @NonNls
  private final Model<? extends String> message;

  @NotNull
  private final Action action;

  public ConfirmationLink( @NotNull @NonNls String id, @NotNull @NonNls
Model<? extends String> message, @NotNull Action action ) {
    super( id );
    this.message = message;
    this.action = action;
    add( new JavaScriptEventConfirmation(
JavaScriptEventConfirmation.EVENT_ON_CLICK, message ) );
  }

  @Override
  public void onClick( @Nullable AjaxRequestTarget target ) {
    if ( target == null ) {
      //Fallback!
      MarkupContainer parent = getParent();
      if ( parent == null ) {
        throw new IllegalStateException( "No parent found!" );
      }

      FallbackConfirmationLinkPanel.replace( parent, message, action );
    } else {
      //Javascript
      action.execute();
    }
  }

  public interface Action extends Serializable {
    /**
     * Executes the action
     */
    void execute();
  }
}



/**
 * Contains a confirm link (as fallback if javascript is not available)
 */
public class FallbackConfirmationLinkPanel extends Panel {
  /**
   * Creates a confirm link panel
   *
   * @param componentToReplace the confirmation link panel this panel
replaces
   * @param message               the message
   * @param action                the action
   */
  public FallbackConfirmationLinkPanel( @NotNull final Component
componentToReplace, @NotNull Model<? extends String> message, @NotNull
final ConfirmationLink.Action action ) {
    super( componentToReplace.getId() );
    add( new Label( "message", message ) );

    add( new Link( "confirm" ) {
      @Override
      public void onClick() {
        action.execute();
        getParent().replaceWith( componentToReplace );
      }
    } );

    add( new Link( "cancel" ) {
      @Override
      public void onClick() {
        getParent().replaceWith( componentToReplace );
      }
    } );
  }

  public static void replace( @NotNull final Component
componentToReplace, @NotNull Model<? extends String> message, @NotNull
ConfirmationLink.Action action ) {
    componentToReplace.replaceWith( new FallbackConfirmationLinkPanel(
componentToReplace, message, action ) );
  }
}




Johannes Schneider wrote:
> Hi,
> 
> I think that is one of that components that has been created several
> times out there.
> Does anybody have a good implementation available?
> 
> There is a wiki page that contains both types of confirmation links
> (http://cwiki.apache.org/WICKET/getting-user-confirmation.html) but not
> a combination of both.
> 
> 
> 
> Thanks,
> 
> Johannes
> 
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> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
> 

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