Currently, when you paste a text inside the input box of RadChat, the text is inserted in the text box as preview and you can either commit the message by pressing Enter or delete the text completely. However, if you have an image object in the clipboard and paste it to the input box, a ChatMediaMessage is directly inserted in RadChat without any preview. 

This is a feature request for illustrating a preview image above the input box like most popular chat applications like Skype.