Button API

local idleColor=256
local activatedColor=8192
local backgroundColor=32768
local textColor=1
local buttons={}
local monitor=nil
local debugMode=false
local monitorSide=nil

if fs.exists("events")==false then
    shell.run("pastebin get bmKBU4Rv events")
end
os.loadAPI("events")

function addButton(x,y,width,height,text,toggle,relative,idleColor,activeColor,textColor)
    if monitor==nil then
        if debugMode==true then
            print("Monitor is not yet defined! Use setMonitorSide(side)")
        end
        return false,"Monitor is not yet defined! Use setMonitorSide(side)"
    elseif x==nil or y==nil or width==nil or height==nil or text==nil then
        if debugMode==true then
            print("Not all required arguments are specified.")
        end
        return false,"Not all required arguments are specified."
    else
        buttonID=#buttons+1
        if string.len(text)>width and relative~=true then
            text=string.sub(text,0,width)
        elseif string.len(text)>width*screenx then
            text=string.sub(text,0,width*screenx)
        end
        buttons[buttonID]={['x']=x,['y']=y,['width']=width,['height']=height,['text']=text,['active']=false,['toggle']=toggle,['relative']=relative,['activeColor']=activeColor,['idleColor']=idleColor,['textColor']=textColor,['visible']=true}
        drawAllButtons{}
        return buttonID
    end
end

function removeAllButtons()
    buttons={}
    drawAllButtons()
end

function removeButton(buttonID)
    if monitor==nil then
        if debugMode==true then
            print("Monitor is not yet defined! Use setMonitorSide(side)")
        end
        return false,"Monitor is not yet defined! Use setMonitorSide(side)"
    else
        if buttonID==nil then
            if debugMode==true then
                print("Not all required arguments are specified.")
            end
            return false,"Not all required arguments are specified."
        else
            if buttons[buttonID]==nil then
                if debugMode==true then
                    print("That button ID does not correspond with a button!")
                end
                return false,"That button ID does not correspond with a button!"
            else
                buttons[buttonID]={"Removed"}
            end
        end
    end
end


function drawAllButtons(event)
    if monitor==nil then
        if debugMode==true then
            print("Monitor is not yet defined! Use setMonitorSide(side)")
        end
        return false,"Monitor is not yet defined! Use setMonitorSide(side)"
    else
        monitor.setBackgroundColor(backgroundColor)
        monitor.clear()
        for buttonID,buttonInfo in pairs(buttons) do
            if buttonInfo['visible']==true then
                local x=buttonInfo['x']
                local y=buttonInfo['y']
                local width=buttonInfo['width']
                local height=buttonInfo['height']
                if buttonInfo['relative']==true then
                    x=math.floor(x*screenx+0.5)
                    y=math.floor(y*screeny+0.5)
                    width=math.floor(width*screenx+0.5)
                    height=math.floor(height*screeny+0.5)
                end
                monitor.setCursorPos(x,y)
                if buttonInfo['active']==true then
                    if buttonInfo['activeColor']==nil then
                        monitor.setBackgroundColor(activatedColor)
                    else
                        monitor.setBackgroundColor(buttonInfo['activeColor'])
                    end
                else
                    if buttonInfo['idleColor']==nil then
                        monitor.setBackgroundColor(idleColor)
                    else
                        monitor.setBackgroundColor(buttonInfo['idleColor'])
                    end
                end
                for i=0,height-1 do
                    monitor.setCursorPos(x,y+i)
                    for i=1,width do
                        monitor.write(" ")
                    end
                end
                if buttonInfo['textColor']==nil then
                    monitor.setTextColor(textColor)
                else
                    monitor.setTextColor(buttonInfo['textColor'])
                end
                stringX=x+(width/2-string.len(buttonInfo['text'])/2)
                stringY=y+(math.floor(height)/2)
                monitor.setCursorPos(stringX,stringY)
                monitor.write(buttonInfo['text'])
            end
        end
    end
    if event==true then return end
    events.triggerEvent("onButtonsDrawn",true)
end

function getButtonInfo(buttonID)
    if monitor==nil then
        if debugMode==true then
            print("Monitor is not yet defined! Use setMonitorSide(side)")
        end
        return false,"Monitor is not yet defined! Use setMonitorSide(side)"
    else
        if buttonID==nil then
            if debugMode==true then
                print("Not all required arguments are specified.")
            end
            return false,"Not all required arguments are specified."
        else
            if buttons[buttonID]==nil then
                if debugMode==true then
                    print("That button ID does not correspond with a button!")
                end
                return false,"That button ID does not correspond with a button!"
            else
                if debugMode==true then
                    for infoID,info in pairs(buttons[buttonID]) do
                        if type(info)=="boolean" then
                            if info==false then
                                info="false"
                            else
                                info="true"
                            end
                        elseif type(info)=="function" then
                            info="function"
                        end
                            print(infoID.." :"..info)

                    end
                end
                return buttons[buttonID]
            end
        end
    end
end

function setButtonInfo(buttonID,infoID,info)
    if monitor==nil then
        if debugMode==true then
            print("Monitor is not yet defined! Use setMonitorSide(side)")
        end
        return false,"Monitor is not yet defined! Use setMonitorSide(side)"
    else
        if buttonID==nil then
            if debugMode==true then
                print("Not all required arguments are specified.")
            end
            return false,"Not all required arguments are specified."
        else
            if buttons[buttonID]==nil then
                if debugMode==true then
                    print("That button ID does not correspond with a button!")
                end
                return false,"That button ID does not correspond with a button!"
            else
                buttons[buttonID][infoID]=info
            end
        end
    end
end

function setVisible(buttonID,bool)
    if monitor==nil then
        if debugMode==true then
            print("Monitor is not yet defined! Use setMonitorSide(side)")
        end
        return false,"Monitor is not yet defined! Use setMonitorSide(side)"
    else
        if buttonID==nil then
            if debugMode==true then
                print("Not all required arguments are specified.")
            end
            return false,"Not all required arguments are specified."
        else
            if buttons[buttonID]==nil then
                if debugMode==true then
                    print("That button ID does not correspond with a button!")
                end
                return false,"That button ID does not correspond with a button!"
            else
                buttons[buttonID]['visible']=bool
            end
        end
    end
    --drawAllButtons()
end

function run(side,clickX,clickY)
    for buttonID,buttonInfo in pairs(buttons) do
        local x=buttonInfo['x']
        local y=buttonInfo['y']
        local width=buttonInfo['width']
        local height=buttonInfo['height']
        if buttonInfo['relative']==true then
            x=math.floor(x*screenx+0.5)
            y=math.floor(y*screeny+0.5)
            width=math.floor(width*screenx+0.5)
            height=math.floor(height*screeny+0.5)
        end
        if debugMode==true then
            print("Pos:"..x..","..y)
        end
        if clickX>=x and clickX<=x+width and clickY>=y and clickY<=y+height and buttonInfo['visible']==true then
            if debugMode==true then
                print("Clicked :"..buttonID)
            end
            if buttonInfo['toggle']==true then
                buttonInfo['active']=not buttonInfo['active']
                drawAllButtons()
                if buttonInfo['active']==true then
                    events.triggerEvent("onButtonClick",buttonID,true)
                else
                    events.triggerEvent("onButtonClick",buttonID,false)
                end
            else
                buttonInfo['active']=true
                drawAllButtons()
                events.triggerEvent("onButtonClick",buttonID)
                sleep(0)
                if buttonInfo~=nil then
                    buttonInfo['active']=false
                end
                drawAllButtons()
            end

        end
    end
end
events.addEventHandler("monitor_touch",run)
events.addEventHandler("mouse_click",run)

function resised(side)
    if side==monitorSide then
        setMonitorSide(side)
        drawAllButtons()
    end
end
events.addEventHandler("monitor_resize",resised)

--[[
function updateButtonPositions()
    for buttonID,buttonInfo in pairs(buttons) do
        if buttonInfo['relative']==true then
            x=
            y=
            width=
            height=
            x=math.floor(x*screenx+0.5)
            y=math.floor(y*screeny+0.5)
            width=math.floor(width*screenx+0.5)
            height=math.floor(height*screeny+0.5)
        end
    end
end
]]

function setMonitorSide(side)
    if side==nil then
        if debugMode==true then
            print("Not all required arguments are specified.")
        end
        return false,"Not all required arguments are specified."
    else
        monitor=peripheral.wrap(side)
        screenx,screeny=monitor.getSize()
        monitorSide=side
    end
end

function setMonitor(peripheral)
    if peripheral==nil then
        if debugMode==true then
            print("Not all required arguments are specified.")
        end
        return false,"Not all required arguments are specified."
    else
        monitor=peripheral
        screenx,screeny=monitor.getSize()
        monitorSide=peripheral
    end
end

function setDebugMode(bool)
    if bool==nil then
        if debugMode==true then
            print("Not all required arguments are specified.")
        end
        return false,"Not all required arguments are specified."
    else
        debugMode=bool
    end
end

function setIdleColor(color)
    if color==nil then
        if debugMode==true then
            print("Not all required arguments are specified.")
        end
        return false,"Not all required arguments are specified."
    else
        idleColor=color
        drawAllButtons()
    end
end

function setActiveColor(color)
    if color==nil then
        if debugMode==true then
            print("Not all required arguments are specified.")
        end
        return false,"Not all required arguments are specified."
    else
        activatedColor=color
        drawAllButtons()
    end
end

function setBackgroundColor(color)
    if color==nil then
        if debugMode==true then
            print("Not all required arguments are specified.")
        end
        return false,"Not all required arguments are specified."
    else
        backgroundColor=color
        drawAllButtons()
    end
end

function setTextColor(color)
    if color==nil then
        if debugMode==true then
            print("Not all required arguments are specified.")
        end
        return false,"Not all required arguments are specified."
    else
        textColor=color
        drawAllButtons()
    end
end