Drag&Drop mail from eMail-Client

Vaadin 6 / 7 / 8
1

Hi Experts,

I try to d&d an eMail from Outlook / Thunderbird directly into a VaadinApplication using DragAndDropWrapper which does not work.
Sme problem with EasyUploads (as it uses the same component):

Easy uploads states:

java.lang.NullPointerException
    at org.vaadin.easyuploads.MultiFileUpload.drop(MultiFileUpload.java:361)
    at com.vaadin.server.DragAndDropService.handleDropRequest(DragAndDropService.java:133)
    at com.vaadin.server.DragAndDropService.changeVariables(DragAndDropService.java:97)

this happens because

Html5File[] files = transferable.getFiles();

in drop(DragAndDropEvent event) is null after dropping the mail.
I’m using Vaadin 7.7.5 and saw
this ticket
, but it doesn’t fix it. Someone with a similar problem? Any hints appreciated!

2

Hi,

I don’t know about Thunderbird, but from Outlook I never got it working.
It seems related with Outlook itself (even recent versions). It’s not working with some other web dnd either (for instance Dropbox)

Has anyone more info ?

Regards

3

I tried Chrome and Firefox both not working. Dropping any other file is no problem, just eMails causes the problem because they are not persistent and not using HF_HDROP but CFSTR_FILECONTENTS instead.
Seems to be some ping-pong between Outlook and Browser-Manufacturers - at least there is a bug
filed
 for Chrome.
So most probably we have to wait for them to fix it. Any other solutions will be appreciated anyway…

4

Hi I had actually just posted a question regarding to this. Is it not possible to have the component just accept CFSTR_FILECONTENTS?

Does anyone know how to get this done?

Thanks,

5

in drop(DragAndDropEvent event) is null after dropping the mail.
I’m using Vaadin 7.7.5 and saw this ticket, but it doesn’t fix it. Someone with a similar problem? Any hints appreciated!

Yes, that fix only prevents NPE happening. The issue is that object dropped from Outlook is not of supported type.