A question about the find() method of IUIContext

[jasonwang]

I am trying to use ui.find() to check if a dialog contains certain labels (RCP application). The idea is:

Code: Select all


//open the dialog
...

//create the expected String list
...

while(list.hasNext){
//get expected text from the list
...

try{
//create locator
WidgetLocator myLocator = new SWTWidgetLocator(Label.class, expectedText);

ui.find(myLocator);
System.out.println("Found widget: "+ expectedText);
             
}
catch(WidgetSearchException e){
System.out.println("Cannot find widget: "+ expectedText);
}

}


It works properly when the dialog has the expected labels, but if an expected label does not exist, the dialog is closed after the WidgetSearchException expection occurs. As a result, the rest of the labels cannot be checked. I would like to know why the dialog is closed when the find method throws an exception.

Thanks.

[Phil Quitslund]

The find() method does some lifecycle management before it throws its exceptions (this is required in cases like open dialogs since they are modal and will stop the exception from propagating). Instead of find(), try findAll() which does not throw any exceptions and does not do any tearing down.

Hope this helps!

[jasonwang]

Thank for the reply. I tired the findAll() method and it does throw any exceptions, but could you tell me how to access the result and get the widget? I always get java.lang.ClassCastException when trying to cast the IWidgetLocator. Please see the following snippet I tried:

Code: Select all

WidgetLocator[] ref = ((WidgetLocator[])ui.findAll(myLocator));
//or
//WidgetReference[] ref = ((WidgetReference[])ui.findAll(myLocator));


[Phil Quitslund]

Yeah this is annoying. Java does not permit that cast.

Instead you'll have to do it on an instance by instance basis:

Code: Select all

for (IWidgetLocator loc : locators) {
   Object widget = ((IWidgetReference)loc).getWidget();
        ....
}

[jasonwang]

Thanks a lot. That helps.