BreadCrumb implemention in GWT2.4

[vaibhav jain]

Hi,

      Can any one help how to implement breadcrumb in GWT2.4?Is there any widget to achieve this?

Best Regards,

Vaibhav

[Ümit Seren]

It really depends what kind of breadcrumb support you want to have.

The widget itself to display breadcrumbs is probably quite simple (List of Hyperlink widgets separated by ">"). However the harder part is to populate the breadcrumb. 

Basically you distinguish between breadcrumbs which show to the current page hierarchy or breadcrumbs which show the navigational history. 

For example if your url encodes the hierarchy of your current page (i.e. #product/{id}/detail ) you can read that out and display a breadcrumb (i.e. Products > {id] > Details). 

However in case you want to display other information in your breadcrumbs (say title of the product) you probably have to access the backend to retrieve the information.

Navigational history can also be displayed by using the History mechanism of GWT (you could store each navigation event or place change in a HashMap) and display it in the breadcrumb. 

Unfortunately I don't know of any widget which supports these functions out of the box and I guess creating a generic one is probably not that use because it really depends on your use case.