MultiplayerDialogUI.c

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//------------------------------------------------------------------------------------------------
class MultiplayerDialogUI: SCR_ConfigurableDialogUi //DialogUI
{
    const string WIDGET_EDIT_IP = "EditIP";
    const string WIDGET_EDIT_PORT = "EditPort";
    const string WIDGET_CHECK_NETWORK = "CheckboxNetwork";
    
    const string DEFAULT_ADDRESS = "127.0.0.1";
    const string DEFAULT_PORT = "2001";
    const int DIRECT_JOIN_CODE_LENGTH = 10;
    
    protected SCR_EditBoxComponent m_EditIP;
    protected SCR_EditBoxComponent m_EditPort;
    protected SCR_CheckboxComponent m_CheckNetwork;
    
    protected ServerBrowserMenuUI m_ServerBrowserUI;
    
    /*ref ScriptInvoker m_OnJoinCodeEntered = new ScriptInvoker;
    ref ScriptInvoker m_OnIpEntered = new ScriptInvoker;*/
    
    //------------------------------------------------------------------------------------------------
    override void OnConfirm()
    {
        string address = GetAddress();
        EDirectJoinFormats format = IsInputValid(m_EditIP);
        bool publicNetwork = !m_CheckNetwork.IsChecked();
        
        m_OnConfirm.Invoke(address, format, publicNetwork);
        
        Close();
    }
    
    //------------------------------------------------------------------------------------------------
    string GetAddress()
    {
        // Theres no other way to recover the default values other than setting "UseDefaultValues".
        // This prevents the user from setting the value directly. Instead it forces him to delete
        // the default value glyph by glyph which is tedious.
        
        if (!m_EditIP || !m_EditPort)
            return string.Empty;
        
        // Address 
        string sAddr = m_EditIP.GetValue();
        if (sAddr.Length() == 0)
            return string.Empty;
        
        // Set client address as fallback - todo: this will be removed once lan detection is available
        if (sAddr == DEFAULT_ADDRESS)
            sAddr = GetGame().GetBackendApi().GetClientLobby().GetMyIP();
        
        // Port
        string sPort = string.Empty;
        
        if (IsAddressValid(sAddr))
        {
            sPort = m_EditPort.GetValue();
            if (sPort.Length() == 0)
                return string.Empty;
        }
        
        BaseContainer gameplaySettings = GetGame().GetGameUserSettings().GetModule("SCR_GameplaySettings");
        
        // Check whether address matches ipv4 format of x.x.x.x, or x.x.x.x:port where x = [0, 255]
        if (IsAddressValid(sAddr))
        {
            if (gameplaySettings)
            {
                gameplaySettings.Set("m_sLastIP", sAddr);
                GetGame().UserSettingsChanged();
            }
        }
        
        if (gameplaySettings)
        {
            gameplaySettings.Set("m_sLastPort", sPort);
            GetGame().UserSettingsChanged();
        }
        
        // Results 
        if (!sPort.IsEmpty())
            return sAddr + ":" + sPort;
        else
            return sAddr;
    }
    
    
    
    //------------------------------------------------------------------------------------------------
    override void OnMenuOpen(SCR_ConfigurableDialogUiPreset preset)
    {
        // Old OnMenuOpen()
        super.OnMenuOpen(preset);
        Widget root = GetRootWidget();
        
        
        // IP and join code edit 
        m_EditIP = SCR_EditBoxComponent.GetEditBoxComponent(WIDGET_EDIT_IP, root);
        
        if (m_EditIP)
        {
            m_EditIP.m_OnChanged.Insert(CheckValidInput);
            
            Widget focus = m_EditIP.GetRootWidget();
            if (focus)
                GetGame().GetWorkspace().SetFocusedWidget(focus);
        }
        
        // Port edit
        m_EditPort = SCR_EditBoxComponent.GetEditBoxComponent(WIDGET_EDIT_PORT, root);
        
        if (m_EditPort)
        {
            m_EditPort.m_OnChanged.Insert(CheckValidInput);
        }
        
        // Checkbox network 
        m_CheckNetwork = SCR_CheckboxComponent.GetCheckboxComponent(WIDGET_CHECK_NETWORK, root);
        
        //SetDialogType(EDialogType.ACTION);
        //---
        
        // Try to load the last valid address
        string text;
        BaseContainer gameplaySettings = GetGame().GetGameUserSettings().GetModule("SCR_GameplaySettings");
        if (gameplaySettings)
            gameplaySettings.Get("m_sLastIP", text);
        
        if (text != string.Empty && m_EditIP)
            m_EditIP.SetValue(text);
        
        // Port 
        string port;
        if (gameplaySettings)
            gameplaySettings.Get("m_sLastPort", port);
            
        if (m_EditPort)
        {
            if (!port.IsEmpty())
                m_EditPort.SetValue(port);
            else 
                m_EditPort.SetValue(DEFAULT_PORT);
        }
 
        // Set the confirm button enabled or disabled
        CheckValidInput(m_EditIP, string.Empty);                                                                                   
    }
    
    //------------------------------------------------------------------------------------------------
    // Checks whether specified ipv4 address matches the 'x.x.x.x' format, where x = [0, 255]
    // if address is passed along with port, port is ignored
    bool IsAddressValid(string address)
    {
        // ""
        if (address == string.Empty)
            return false;
        
        
        // cut off port or whatever follows the :
        if (address.Contains(":"))
        {
            int colonIndex = address.IndexOf(":");
            address = address.Substring(0, colonIndex);
        }
        
        array<string> values = new array<string>();
        address.Split(".", values, true);
        int valuesCount = values.Count();
        
        // 0.1.2.3 = 4 values
        if (valuesCount != 4)
            return false;
        
        int zeroElements = 0;
        // check if values are ok
        for (int i = 0; i < 4; i++)
        {
            // Iterate through all tokens parsed between '.'
            // if all of the characters are digit (ascii 48-57)
            // it then checks if each value is within 0-255 range
            // if anything fails, returns false
            int strLen = values[i].Length();
            for (int j = 0; j < strLen; j++)
            {
                // Check if it's a valid digit
                string char = values[i].Get(j);
                int asciiValue = char.ToAscii();
                if (asciiValue >= 48 && asciiValue <= 57)
                    continue;
                else
                    return false;
            }
            
            int value = values[i].ToInt();
            if (value == 0)
                zeroElements++;
            
            if (value >= 0 && value <= 255)
                continue;
            else
                return false;
        }
        
        return true;
    }
    
    //------------------------------------------------------------------------------------------------
    protected bool IsJoinCodeValid(string text)
    {
        // Text size 
        if (text.Length() != DIRECT_JOIN_CODE_LENGTH)
            return false;
        
        for (int i = 0, len = text.Length(); i < len; i++)
        {
            // fail if is not a number  
            if (text[i].ToInt() == 0 && text[i] != "0")
                return false;
        }
        
        return true;
    }
    
    //------------------------------------------------------------------------------------------------
    void CheckValidInput(SCR_EditBoxComponent comp, string text)
    {
        if (!m_EditIP)
            return;
        
        bool validInput = IsInputValid(m_EditIP) != EDirectJoinFormats.INVALID;
        bool validAddress = IsInputValid(m_EditIP) == EDirectJoinFormats.IP_PORT;
 
        // Enable input 
        m_EditPort.SetEnabled(validAddress);
        //m_Confirm.SetEnabled(validInput);
        FindButton("confirm").SetEnabled(validInput);
    }
    
    //------------------------------------------------------------------------------------------------
    protected EDirectJoinFormats IsInputValid(SCR_EditBoxComponent comp)
    {
        // IP:port
        if (IsAddressValid(m_EditIP.GetValue()))
            return EDirectJoinFormats.IP_PORT;
        
        // Join code
        if (IsJoinCodeValid(m_EditIP.GetValue()))
            return EDirectJoinFormats.JOIN_CODE;
        
        return EDirectJoinFormats.INVALID;
    }
    
    //------------------------------------------------------------------------------------------------
    void SetServerBrowserUI(ServerBrowserMenuUI serverBrowserUI) { m_ServerBrowserUI = m_ServerBrowserUI; }
};
 
//------------------------------------------------------------------------------------------------
enum EDirectJoinFormats
{
    INVALID,
    IP_PORT,
    JOIN_CODE,
    ROOM_ID,
};