Insert/edit link (dialog)

I need to create a button in the tinyMCE editor that when clicked presents the editor with the same Insert/edit link dialog they get with the links button. So I need to repurpose that functionality. Differences:

Steps:
Open the Insert/edit link dialog via button. Do this without having to highlight a word first (unlike link button). Allow user to select a link from posts (same as link dialog – even better if I can hide the url field). Edit the title if required and insert into post with custom styling (wrapped in a div.class).

Results:
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I just can’t figure out how to access that window and functionality without having to recreate the wheel.