LUA function

function initUI()

    local size = vec2(800, 700)
    local res = getResolution()

    -- create window
    local menu = ScriptUI()
    mywindow = menu:createWindow(Rect(res * 0.5 - size * 0.5, res * 0.5 + size * 0.5))
    menu:registerWindow(mywindow, "Fleet Control")

    mywindow.caption = "Fleet Control"
    mywindow.showCloseButton = 1
    mywindow.moveable = 1

    local tabbedWindow = mywindow:createTabbedWindow(Rect(vec2(10, 10), size - 10))

    local tab = tabbedWindow:createTab("Orders", "data/textures/icons/ship.png", "Fleet Orders")
    buildOrdersUI(tab)

    local tab = tabbedWindow:createTab("Groups", "data/textures/icons/spanner.png", "Fleet Groups")
    buildGroupsUI(tab)

    scriptLog(nil, "control UI initialized successfully")

end


function buildOrdersUI(parent)

    local size = parent.size

    parent = parent:createScrollFrame(Rect(size))

    local groupStateX = -120

    local nameLabelX = 10
    local stateLabelX = -250
    local locLabelX = -100

    local y_grp = 100
    for _, shipgroup in pairs(shipgroups) do

        local split_grp = UIVerticalSplitter(Rect(10, y_grp, size.x - 50, 35 + y_grp), 10, 0, 0.5)
        split_grp.rightSize = 310

        local xl = split_grp.left.lower.x
        local xu = split_grp.left.upper.x

        local lblgroupname = parent:createLabel(vec2(xl, y_grp + 10), shipgroup.name, 16)
        --lblgroupname.bold = true

        local lblgroupstate = parent:createLabel(vec2(xu + groupStateX, y_grp + 14), shipgroup.state, 16)
        --lblgroupstate.italic = true

        local xlbtn = split_grp.right.lower.x
        local ylbtn = split_grp.right.lower.y
        for _, btninfo in pairs(orderButtonInfo) do
            local orderbtn = parent:createButton(Rect(xlbtn, ylbtn, xlbtn + 35, ylbtn + 35), btninfo.caption, "onGroupOrderPressed")
            orderbtn.tooltip = btninfo.text
            xlbtn = xlbtn + 40
        end

        y_grp = y_grp + 40

        local y_shp = y_grp
        for i, ship in pairs(shipgroup.ships) do

            local yText = y_shp + 6

            local split1 = UIVerticalSplitter(Rect(10, y_shp, size.x - 50, 30 + y_shp), 10, 0, 0.5)
            split1.rightSize = 100

            local frame = parent:createFrame(split1.left)

            local xl = split1.left.lower.x
            local xu = split1.left.upper.x

            local titleLabel = parent:createLabel(vec2(xl + nameLabelX, yText), ship.name, 15)
            local coordLabel = parent:createLabel(vec2(xu + stateLabelX, yText), ship.state, 15)
            local distLabel = parent:createLabel(vec2(xu + locLabelX, yText), ship.loc, 15)

            titleLabel.font = "Arial"
            coordLabel.font = "Arial"
            distLabel.font = "Arial"

            local cbox = parent:createComboBox(split1.right, "onShipOrderSelected")
            for _, btninfo in pairs(orderButtonInfo) do
                cbox:addEntry(btninfo.text)
            end

            y_shp = y_shp + 35
            y_grp = y_grp + 35

        end

    end
end