[galaxy-dev] Help with two questions about transfering data to galaxy local instance

Hi, I am doing a data transferring interface in galaxy. I want to accomplish two things. First, when user enters a number, the interface will show some related information or search results (eg, related files) by this unique number. Then user can select the files they wanted to put into galaxy history panel for further data analysis. So my question is, can add a button in xml interface or python code to show the search results? The second question is that the files could be big. How can I transfer the files faster to my local galaxy instance? The current copy is just too slow. Thanks!