Re: Ignore place change on bookmark click

The solution was to modify the DefaultHistorian by overriding addValueChangeHanlder. I was then able to inspect the value change event before passing it along to the PlaceHistoryHandler.

PlaceHistoryHandler historyHandler=new PlaceHistoryHandler(getPlaceHistoryMapper(),getHistorian());

public Historian getHistorian() {

return new PlaceHistoryHandler.DefaultHistorian(){

@Override

public HandlerRegistration addValueChangeHandler(final ValueChangeHandler<String> valueChangeHandler) {

//The PlaceHistoryHandler will be adding this ValueChangeHandler. Override and inspect the ValueChangeEvent before alerting the PlaceHistoryHandler that there has been a change.

return super.addValueChangeHandler(new ValueChangeHandler<String>() {

@Override

public void onValueChange(ValueChangeEvent<String> event) {

if(event.getValue().toLowerCase().equals("toc")  //Ignore table of contents navigation event.

|| event.getValue().indexOf(WcagHelper.HYPERLINK_PREFIX)>=0){  //Ignore specially marked hyperlinks.

return;

}

//We made it this far so it is safe to pass the navigation event along.

valueChangeHandler.onValueChange(event);

}

});

}

};

}

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