Use FilterTextBox after a specific time

[Dominic Warzok]

Hi, 

in my webapp we have a very lagre collection. The user has the ability to filter these collection.

But if you tipe in one letter and start filtering it needs a lot of time. 

So I try to change the valueChangeHandler to only update the value in the box after 2 seconds when typing ended. 

This is my code:

  @Override

  public void onValueChange( ValueChangeEvent<String> event )

  {

    Timer t = new Timer()

    {

      @Override

      public void run()

      {

        addChangeHandler( new ChangeHandler()

        {

          @Override

          public void onChange( ChangeEvent event1 )

          {

            ValueChangeEvent.fire( TextBoxPSG.this, getValue() );

          }

        } );

      }

    };

    t.schedule( 15000 );

  }

But this doesn't work -.- 

Any suggestions ? 

Thanks in advance  

[Tomek Kańka]

W dniu czwartek, 28 sierpnia 2014 13:39:55 UTC+2 użytkownik Dominic Warzok napisał:

Hi, 

in my webapp we have a very lagre collection. The user has the ability to filter these collection.

But if you tipe in one letter and start filtering it needs a lot of time. 

So I try to change the valueChangeHandler to only update the value in the box after 2 seconds when typing ended. 

AFAIR typing in TextBox doesn't triger ValueChangeEvent. Here is my solution:

    private Timer timer = null;
    @UiHandler("filter")
    public void onFilterKeyUp(KeyUpEvent event)
    {
        if (timer != null)
            timer.cancel();
       
        timer = new Timer()
        {
            public void run()
            {
                getUiHandlers().filter(filter.getText());
            }
        };
        timer.schedule(500);

       
    }