[platform-dev] Droppable palette

[Dimas Yusuf Danurwenda]

Hello again.

I created a module that provide a children for project's Node in project explorer. This node children will contain images file, let say .jpg and .png files. On the other hand, I love to use this feature when adding files to Java package node on Project's explorer : select the files' icon from your OS's explorer and then drag it to the package node.
1. How can I filter the dropped object, such that it will create new DataObject and FileObject only for images file? A simple answer may sounds like "look at the file extension", but I have no idea where to implement that answer

I read this http://platform.netbeans.org/tutorials/nbm-visual_library.html and this palette concept is really a must-have for my app.
2. Done filtering objects as I mentioned in (1) above, I want these images to be added directly to palette. Is it possible? (to simplify, there'll be only one Category in the palette)
3. Here comes the subject : I wonder if it's possible for user to drag image files' icon from the OS's explorer, drop it on the palette, and it triggers the step (1) and (2) above?

I appreciate any suggestion. Thanks before

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Dimas Yusuf Danurwenda