on.mouse_press = function(x,y, mouse_button)
	if Cursor_node then
		Cursor_node.show_cursor = nil
		Cursor_node = nil
	end
	local node = to_text(x,y)
	if node then
		Cursor_node = node
		edit.mouse_press(node.editor, x,y, mouse_button)
	else
		Pan = {x=Viewport.x+x/Viewport.zoom,y=Viewport.y+y/Viewport.zoom}
	end
end