using UnityEditor;
using UnityEngine;
using System;
using System.Collections.Generic;
using System.IO;
using Perforce.P4;
using log4net;

namespace P4Connect
{
    // Use the ConfigWindow Class to display an EditorWindow for editing values

    // This Editor window allows the user to set and store
    // Perforce connection settings that will be used to
    // Check out files on Save / Move / Delete / etc...
    // The connection parameters are saved as Editor Preferences
    // which means they go the registry.
    [Serializable]
    public class ConfigWindow : EditorWindow
    {
        public static bool ConnectionWizardShowing = false;

        public const int MaxPendingItems = 200;

        static bool _stylesInitialized = false;

        private static ConfigWindow _pInstance = null;

        public static ConfigWindow Instance
        {
            get
            {
                if (_pInstance == null)
                {
                    ShowWindow();
                }
                return _pInstance;
            }
        }

        private static string WindowName = "P4 Settings";

        //private static readonly ILog log = LogManager.GetLogger(typeof(ConfigWindow));

        // Add menu item to show the configuration panel
        [MenuItem("Edit/Perforce Settings", false, 300)]
        public static void ShowWindow()
        {
            // Show existing window instance. If one doesn't exist, make one.
            _pInstance = EditorWindow.GetWindow<ConfigWindow>(WindowName);
#if UNITY_5
            _pInstance.titleContent = new GUIContent(WindowName);
#else
            _pInstance.title = WindowName;
#endif      
            _pInstance.name = WindowName;
            _pInstance.minSize = new UnityEngine.Vector2(350.0f, 130.0f);
        }

        public void OnEnable()
        {
            // Debug.Log("ConfigWindow OnEnable");
            //Debug.Log("URI: " + Config.ServerURI.ToStringNullSafe());
            //this should be defined in UnityEditor 5.1.1 and later
            //Config.titleContent.title = "foo";  // = ContentWindowTitle;
        }

        public void OnDisable()
        {
            //Debug.Log("ConfigWindow OnDisable");
            // Debug.Log("URI: " + Config.ServerURI.ToStringNullSafe());
        }

        void OnSelectionChange()
        {
            Repaint();
        }

        public static void OnDestroy()
        {
            //Debug.Log("ConfigWindow OnDestroy");

            if (ConnectionWizardShowing)
            {
                ConnectionWizard.Window.Close();
                ConnectionWizardShowing = false;
            }
        }

        public static void Refresh()
        {
            if (Instance != null)
                Instance.Repaint();
        }

        private static int _blinkCount = 0;
        private static int _blinkMax = 6;
        private static bool _blinkOn = true;

        private void OnInspectorUpdate()
        {
            Repaint();  // 10 x a second

            _blinkCount++;

            if (_blinkCount >= _blinkMax)   // approx every second
            {
                if (_blinkOn)
                {
                    _blinkButtonStyle = _gButtonStyle;
                }
                else
                {
                    _blinkButtonStyle = _yButtonStyle;
                }
                _blinkOn = !_blinkOn;
                _blinkCount = 0;
            }
        }

        private static GUIStyle _fatButtonStyle;
        private static GUIStyle _rButtonStyle;
        private static GUIStyle _gButtonStyle;
        private static GUIStyle _yButtonStyle;

        private static GUIStyle _blinkButtonStyle;

        private static GUIStyle _bigButtonStyle;
        private static GUIStyle _bigRadioStyle;

        //private static string SkinPath = "Assets/P4Connect/Editor/P4Connect.guiskin";

        private static GUISkin _p4Skin = null;

        // Access the P4Skin, if the asset can't be found, construct it.
        // Only called once when initializing styles.
        public static GUISkin GetP4Skin()
        {
            if (_p4Skin != null)
                return _p4Skin;

#if Unity_4_0
        //    GUISkin p4Skin = Resources.LoadAssetAtPath(SkinPath, typeof(GUISkin)) as GUISkin;
#else
            //     GUISkin p4Skin = AssetDatabase.LoadAssetAtPath(SkinPath, typeof (GUISkin)) as GUISkin;
#endif
            //     if (p4Skin != null)
            //     {
            // Comment out the following line if you are developing a new skin
            //          return (p4Skin);
            //      }

            // We couldn't find one, so we construct it ourselves
            //       Debug.Log("Creating GUISkin");

            _p4Skin = GUISkin.Instantiate(GUI.skin) as GUISkin;
            if (_p4Skin == null)
            {
                Debug.Log("Could not instantiate p4Skin");
                _p4Skin = GUI.skin;
                return _p4Skin;
            }

            var bigButtonStyle = new GUIStyle(GUI.skin.button)
            {
                name = "bigButton",
                alignment = TextAnchor.MiddleCenter,
                fontSize = 18,
                fixedHeight = 100,
                fixedWidth = 100,
            };

            var bigRadioStyle = new GUIStyle(GUI.skin.button)
            {
                name = "bigRadio",
                alignment = TextAnchor.MiddleCenter,
                fontSize = 14,
                fixedHeight = 100,
                fixedWidth = 100,
            };

            var fatButtonStyle = new GUIStyle(GUI.skin.button)
            {
                name = "fatButton",
                alignment = TextAnchor.MiddleCenter,
                fontSize = 16,
                fixedHeight = 50,
            };

            var gButtonStyle = new GUIStyle(fatButtonStyle)
            {
                name = "greenFatButton",
                normal = new GUIStyleState() { background = Icons.GetIcon("button-green.png") as Texture2D, textColor = Color.black },
            };

            var rButtonStyle = new GUIStyle(fatButtonStyle)
            {
                name = "redFatButton",
                normal = new GUIStyleState() { background = Icons.GetIcon("button-red.png") as Texture2D, textColor = Color.white },
            };

            var yButtonStyle = new GUIStyle(fatButtonStyle)
            {
                name = "yellowFatButton",
                normal = new GUIStyleState() { background = Icons.GetIcon("button-yellow.png") as Texture2D, textColor = Color.black },
            };

            // Add some custom types to the default set.
            List<GUIStyle> myCustomStyles = new List<GUIStyle>(_p4Skin.customStyles)
            {
                bigButtonStyle,
                bigRadioStyle,
                fatButtonStyle,
                gButtonStyle,
                rButtonStyle,
                yButtonStyle,
            };
            _p4Skin.customStyles = myCustomStyles.ToArray();

            _blinkButtonStyle = fatButtonStyle;

            // Write this skin out to P4Skin for future use.
            //Debug.Log("Writing Skin");
            //   try
            //    {
            //        AssetDatabase.StartAssetEditing();
            //        AssetDatabase.CreateAsset(p4Skin, SkinPath);
            //        AssetDatabase.StopAssetEditing();
            //        EditorUtility.SetDirty(p4Skin);
            //    }
            //     catch (Exception ex)
            //      {
            //          Debug.Log("GetP4Skin Exception: " + ex.Message);
            //      }
            return _p4Skin;
        }

        // Static initializer called ONCE from OnGUI() after initialization
        private static void InitializeStyles()
        {
            //Debug.Log("ConfigWindow InitializeStyles()");
            GUI.skin = GetP4Skin();

            _bigButtonStyle = GUI.skin.GetStyle("bigButton");
            _bigRadioStyle = GUI.skin.GetStyle("bigRadio");
            _fatButtonStyle = GUI.skin.GetStyle("fatButton");
            _gButtonStyle = GUI.skin.GetStyle("greenFatButton");
            _rButtonStyle = GUI.skin.GetStyle("redFatButton");
            _yButtonStyle = GUI.skin.GetStyle("yellowFatButton");
        }


        /// <summary>
        /// Static Constructor, reads connection settings from Prefs at least once
        /// </summary>
        public static void Initialize()
        {
            Refresh();
        }

        /// <summary>
        /// Figure out if the Current Settings need to be saved.
        /// This is used to draw attention to saving settings after a successful connection.
        /// </summary>
        /// <returns></returns>
        private bool SaveNeeded()
        {
            if (!Config.PerforceEnabled || !Config.Valid)
                return false;

            if (Config.LastSavedConnection == null)
            {
                // We are connected, so save this configuration as LastSavedConnection
                Config.LastSavedConnection = new ConnectionConfig(true);
            }

            if (Config.LastSavedConnection.MatchesConfig())
            {
                return false;
            }
            else
            {
                //Debug.Log("LastSaved: " + Config.LastSavedConnection.ToString());
                //Debug.Log("Default: " + Config.DefaultConnection.ToString());
            }

            return true;
        }

        static Color _saveColor;
        private static readonly Color DisabledColor = Color.red;
        private static readonly Color ConnectedColor = Color.white;
        private static readonly Color DisconnectedColor = Color.yellow;

        private static Color StatusColor()
        {
            var c = Color.white;
            if (Config.PerforceEnabled)
            {
                c = Config.Valid ? ConnectedColor : DisconnectedColor;
            }
            else
            {
                c = DisabledColor;
            }
            return c;
        }

        // static objects frequently used to create controls
        static readonly GUILayoutOption BoxWidth = GUILayout.MaxWidth(200.0f);
        static readonly GUILayoutOption EnumWidth = GUILayout.Width(75.0f);
        static readonly GUILayoutOption WideEnumWidth = GUILayout.Width(100.0f);
        static readonly GUILayoutOption CheckWidth = GUILayout.Width(16.0f);
        static readonly GUILayoutOption TextWidth = GUILayout.Width(250.0f);
        static readonly GUILayoutOption ButtonWidth = GUILayout.Width(80.0f);
        static readonly GUILayoutOption IntWidth = GUILayout.Width(30.0f);
        static readonly GUILayoutOption LabelWidth = GUILayout.Width(84.0f);
        static readonly GUILayoutOption IndentWidth = GUILayout.Width(10.0f);
        static readonly GUILayoutOption BigIconHeight = GUILayout.Height(100.0f);

        static float _VerticalSkip = 8.0f;

        // ToolTips need GUIContent entries 
        private static GUIContent _contentIcon = new GUIContent("Icon", "View P4Connect documentation on the web");
        private static readonly GUIContent ContentConnectPane = new GUIContent("Connection", "Edit P4Connect Connection Settings");
        private static readonly GUIContent ContentOptionsPane = new GUIContent("Options", "Edit P4Connect general options");
        private static readonly GUIContent ContentDiagnosticsPane = new GUIContent("Diagnostics\n+\nUtilities", "Edit P4Connect Diagnostic options");

        private static readonly GUIContent ContentDisable = new GUIContent("Disable", "Disable p4connect for this project");
        private static readonly GUIContent ContentEnable = new GUIContent("Enable", "Enable p4connect for this project");
        private static readonly GUIContent ContentConnect = new GUIContent("Connect", "Create Connection to Server using current settings");
        private static readonly GUIContent ContentDisconnect = new GUIContent("Disconnect", "Break Connection with Server");
        private static readonly GUIContent ContentSaveSettings = new GUIContent("Save Settings", "Save the current settings");
        private static readonly GUIContent ContentDocLink = new GUIContent("View Web Documentation", "Click to view P4Connect documentation");
        private static readonly GUIContent ContentSaveTypeEnum = new GUIContent("Settings storage type:", "Change the current save mode\nEditor Preferences (registry) or \n Config Asset stores config in an asset");
        private static readonly GUIContent ContentConsoleLogEnum = new GUIContent("Console Log Reporting Level: ", "Select how much of the P4Connect log gets echoed to the Unity Console");

        private static GUIContent _wizardIconContent = new GUIContent("Icon", "Configuration Wizard");

        static Texture2D _bigIcon = null;
        static Texture2D _wizardIcon = null;

        private void OnGuiStatusBar()
        {
            _saveColor = GUI.color;
            GUI.color = StatusColor();

            EditorGUILayout.BeginHorizontal("HelpBox", BigIconHeight);

            if (_bigIcon == null)
            {
                _bigIcon = Icons.GetIcon("p4connect-icon.png") as Texture2D;
                _contentIcon = new GUIContent(_bigIcon, "Click to view documentation on the web");
            }

            if (GUILayout.Button(_contentIcon, _bigButtonStyle))
            {
                System.Diagnostics.Process.Start("http://www.perforce.com/perforce/doc.current/manuals/p4connectguide/index.html");
            }
            GUI.color = _saveColor;

            EditorGUILayout.BeginVertical(); // Status Pane
            GUI.color = StatusColor();
            if (Config.PerforceEnabled)
            {
                EditorGUILayout.BeginHorizontal();

                if (!Config.Valid)
                {
                    EditorGUILayout.HelpBox("Perforce Integration is INACTIVE. Please Verify your Settings!",
                        MessageType.Warning, true);
                }
                else
                {
                    EditorGUILayout.HelpBox("Perforce Integration is ACTIVE.", MessageType.Info, true);
                }

                GUILayout.FlexibleSpace();
                GUI.color = _saveColor;

                if (GUILayout.Button(ContentDisable, _rButtonStyle, GUILayout.Width(120.0f)))
                {
                    Config.PerforceEnabled = false;
                }
                EditorGUILayout.EndHorizontal();
            }
            else
            {
                EditorGUILayout.BeginHorizontal();
                EditorGUILayout.HelpBox("Perforce Integration is DISABLED.", MessageType.Info, true);
                GUILayout.FlexibleSpace();
                GUI.color = _saveColor;
                if (GUILayout.Button(ContentEnable, _gButtonStyle, GUILayout.Width(120.0f)))
                {
                    Config.PerforceEnabled = true;
                    Config.Valid = Config.CheckSettings(Config.DefaultConnection);  // Go ahead and try to connect also
                }
                EditorGUILayout.EndHorizontal();
            }

            EditorGUILayout.BeginVertical("Box");
            GUILayout.Label("Version: " + Version.PerforceReleaseString + "-" + Version.Build, "BoldLabel");
            GUILayout.Label("Project: " + Main.RootPath.ToStringNullSafe(), EditorStyles.miniLabel);

            EditorGUILayout.BeginHorizontal();
            GUILayout.Label("Save Mode: " + Config.SaveMode.ToString(), EditorStyles.miniLabel);
            GUILayout.FlexibleSpace();


            GUIStyle buttonStyle = SaveNeeded() ? _blinkButtonStyle : _fatButtonStyle;

            if (GUILayout.Button(ContentSaveSettings, buttonStyle, GUILayout.Width(150.0f)))
            {
                if (Config.SaveMode == Config.SaveSettingsMode.EditorPrefs)
                {
                    Debug.Log("Saving configuration as Editor Preferences");
                    Config.WritePrefs();
                }
                else
                {
                    Debug.Log("Saving configuration as Configuration Asset");
                    Config.WriteConfigAsset();
                }
                Config.LastSavedConnection = new ConnectionConfig(true);
            }
            EditorGUILayout.EndHorizontal();
            EditorGUILayout.EndVertical();  // Box

            EditorGUILayout.EndVertical();    // Status Pane
            EditorGUILayout.EndHorizontal(); // End of Toolbar
            GUI.color = _saveColor;
        }

        private enum GuiSettingsMode
        {
            Connection, Options, Diagnostics
        }
        [SerializeField]
        private static GuiSettingsMode _currentMode = GuiSettingsMode.Connection;
        [SerializeField]
        private static bool _bConnection = true;
        [SerializeField]
        private static bool _bOptions = false;
        [SerializeField]
        private static bool _bDiagnostics = false;

        private void OnGuiSettings()
        {
            EditorGUILayout.BeginHorizontal("Box");
            EditorGUILayout.BeginVertical();

            // ReSharper disable once AssignmentInConditionalExpression
            if (_bConnection = GUILayout.Toggle(_bConnection, ContentConnectPane, _bigRadioStyle))
            {
                _bOptions = _bDiagnostics = false;
                _currentMode = GuiSettingsMode.Connection;
            }

            // ReSharper disable once AssignmentInConditionalExpression
            if (_bOptions = GUILayout.Toggle(_bOptions, ContentOptionsPane, _bigRadioStyle))
            {
                _bConnection = _bDiagnostics = false;
                _currentMode = GuiSettingsMode.Options;
            }

            // ReSharper disable once AssignmentInConditionalExpression
            if (_bDiagnostics = GUILayout.Toggle(_bDiagnostics, ContentDiagnosticsPane, _bigRadioStyle))
            {
                _bConnection = _bOptions = false;
                _currentMode = GuiSettingsMode.Diagnostics;
            }

            EditorGUILayout.EndVertical();

            EditorGUILayout.BeginVertical("box");
            switch (_currentMode)
            {
                case GuiSettingsMode.Connection:
                    OnGuiConnectionPanel();
                    break;
                case GuiSettingsMode.Options:
                    OnGUIOptionsPanel();
                    break;
                case GuiSettingsMode.Diagnostics:
                    OnGUIDiagnosticsPanel();
                    break;
            }

            EditorGUILayout.EndVertical();

            EditorGUILayout.EndHorizontal();
        }

        #region ConnectionPanel
        /// <summary>
        /// Draw the Panel with Connection information
        /// </summary>
        private void OnGuiConnectionPanel()
        {
            bool errorFound = false;

            if (_wizardIcon == null)
            {
                _wizardIcon = Icons.GetIcon("wizard-bee.png") as Texture2D;
                _wizardIconContent = new GUIContent(_wizardIcon, "Click to activate Wizard");
            }

            GUILayout.BeginVertical();      // Panel

            GUILayout.Label("Connection Settings", EditorStyles.boldLabel);
            GUILayout.Space(_VerticalSkip);

            GUILayout.BeginVertical("Box");     // connection box

            // Disable connection settings if already connected
            EditorGUI.BeginDisabledGroup(Config.Valid);
            {
                EditorGUILayout.BeginHorizontal();
                {
                    GUILayout.Label("Server URI:", LabelWidth);
                    Config.ServerUri = EditorGUILayout.TextField(Config.ServerUri);
                }
                EditorGUILayout.EndHorizontal();

                if (Config.DefaultConnection.Tested && !Config.DefaultConnection.ServerValid)
                {
                    EditorGUILayout.HelpBox("Invalid Server URI", MessageType.Error);
                    errorFound = true;
                }

                EditorGUILayout.BeginHorizontal();
                {
                    GUILayout.Label("Username:", LabelWidth);
                    Config.Username = EditorGUILayout.TextField(Config.Username);
                }
                EditorGUILayout.EndHorizontal();

                EditorGUILayout.BeginHorizontal();
                {
                    GUILayout.Label("Password:", LabelWidth);
                    Config.Password = EditorGUILayout.PasswordField(Config.Password);
                }
                EditorGUILayout.EndHorizontal();

                if (!errorFound && Config.DefaultConnection.Tested && !(Config.DefaultConnection.PasswordValid && Config.DefaultConnection.UserValid))
                {
                    EditorGUILayout.HelpBox("Invalid Username / Password", MessageType.Error);
                    errorFound = true;
                }

                EditorGUILayout.BeginHorizontal();
                {
                    GUILayout.Label("Workspace:", LabelWidth);
                    Config.Workspace = EditorGUILayout.TextField(Config.Workspace);
                }
                EditorGUILayout.EndHorizontal();

                if (!errorFound && Config.DefaultConnection.Tested && Config.DefaultConnection.PasswordValid && (!Config.DefaultConnection.WorkspaceValid))
                {
                    EditorGUILayout.HelpBox("Invalid Workspace", MessageType.Error);
                    errorFound = true;
                }

                if (!errorFound && Config.DefaultConnection.Tested && Config.DefaultConnection.WorkspaceValid && !Config.DefaultConnection.ProjectRootValid)
                {
                    // The project isn't under the workspace root
                    string perforcePath = "//" + Config.Workspace + "/...";
                    string rootPath = P4Connect.Main.RootPath;

                    EditorGUILayout.HelpBox("Invalid Workspace. The client path:\n" +
                    "\t" + perforcePath + "\n" +
                    "maps to this folder:\n" +
                    "\t" + VerifySettings.LastWorkspaceMapping + "\n" +
                    "which is not a parent directory of the project's root:\n" +
                    "\t" + rootPath, MessageType.Error);
                }

                EditorGUILayout.BeginHorizontal();
                {
                    GUILayout.Label("P4HOST:", LabelWidth);
                    Config.Hostname = EditorGUILayout.TextField(Config.Hostname);
                }
                EditorGUILayout.EndHorizontal();

                EditorGUILayout.BeginHorizontal();
                {
                    GUILayout.Label("P4CHARSET:", LabelWidth);
                    Config.Charset = EditorGUILayout.TextField(Config.Charset);
                }
                EditorGUILayout.EndHorizontal();
            }
            EditorGUI.EndDisabledGroup();  // Connection Valid

            EditorGUILayout.BeginHorizontal();
            EditorGUI.BeginDisabledGroup(!Config.PerforceEnabled);
            GUI.SetNextControlName("connect");

            if (GUILayout.Button(Config.Valid ? ContentDisconnect : ContentConnect, Config.Valid ? _rButtonStyle : _gButtonStyle, GUILayout.Width(120.0f)))
            {
                if (Config.Valid)
                {
                    Config.DefaultConnection.Reset();  // disconnect
                    Config.Valid = false;
                }
                else
                {
                    EditorGUILayout.HelpBox("Please Wait! Checking Perforce Settings. This can take a while ...", MessageType.Info);
                    Config.DefaultConnection.FromConfig();
                    Config.Valid = Config.CheckSettings(Config.DefaultConnection);
                }
            }

            EditorGUI.EndDisabledGroup();
            EditorGUILayout.EndHorizontal();
            EditorGUILayout.EndVertical();  // Connection Box

            EditorGUILayout.BeginHorizontal();
            EditorGUILayout.BeginVertical();   // New Settings Assistance
            {
                GUILayout.Label("Load Settings", EditorStyles.boldLabel);
                GUILayout.Space(_VerticalSkip);

                EditorGUILayout.BeginVertical("box");

                EditorGUI.BeginDisabledGroup(Config.Valid);
                {
                    EditorGUILayout.BeginHorizontal();
                    {
                        EditorGUILayout.BeginVertical("box");
                        if (GUILayout.Button(_wizardIconContent, _bigButtonStyle))
                        {
                            GUI.FocusControl("");
                            if (!ConnectionWizardShowing)
                            {
                                ConnectionWizard.ShowWindow();
                                ConnectionWizardShowing = true;
                            }
                        }
                        EditorGUILayout.EndVertical();

                        EditorGUILayout.BeginVertical();
                        if (GUILayout.Button("Load Defaults", EditorStyles.miniButton, BoxWidth))
                        {
                            GUI.FocusControl("");
                            Config.ResetValues();
                            Config.DefaultConnection.FromConfig();
                            Repaint();
                        }
                        if (GUILayout.Button("Load P4 Environment", EditorStyles.miniButton, BoxWidth))
                        {
                            GUI.FocusControl("");
                            if (!Config.ReadEnvironment())
                            {
                                EditorUtility.DisplayDialog("Read Perforce Environment",
                                    "No Perforce Environment variables found!", "OK");
                            }
                            Config.DefaultConnection.FromConfig();
                            Repaint();
                        }
                        if (GUILayout.Button("Load P4Config", BoxWidth))
                        {
                            GUI.FocusControl("");
                            string configName = Environment.GetEnvironmentVariable("P4CONFIG");
                            if (string.IsNullOrEmpty(configName))
                            {
                                configName = Config.P4ConfigDefault; // If not in environment, use the default.
                            }
                            string p4ConfigFile = Config.FindP4ConfigFile(configName);

                            if (string.IsNullOrEmpty(p4ConfigFile))
                            {
                                Debug.Log("P4Config file " + configName + " Not Found");
                            }
                            else
                            {
                                Config.LoadP4ConfigFile(p4ConfigFile);
                                Debug.Log("P4Config Found at: " + Path.GetFullPath(p4ConfigFile));
                            }
                            Config.DefaultConnection.FromConfig();
                            Repaint();
                        }

                        if (GUILayout.Button("Load Editor Prefs", BoxWidth))
                        {
                            GUI.FocusControl("");
                            Config.ReadPrefs();
                            Config.DefaultConnection.FromConfig();
                            Repaint();
                        }

                        if (GUILayout.Button("Load Config Asset", BoxWidth))
                        {
                            GUI.FocusControl("");
                            if (!Config.ReadConfigAsset())
                            {
                                EditorUtility.DisplayDialog("Read Configuration Asset", "No Configuration Asset found!",
                                    "OK");
                            }

                            Config.DefaultConnection.FromConfig();
                            Repaint();
                        }
                        EditorGUILayout.EndVertical();
                    }
                    EditorGUILayout.EndHorizontal();
                }
                EditorGUI.EndDisabledGroup();    // Settings Valid

                EditorGUILayout.EndHorizontal();
                GUILayout.EndVertical();
            }  // new settings
            EditorGUILayout.EndVertical();

            GUILayout.EndVertical();      // Panel
        }
        #endregion

        #region OptionsPanel
        private void OnGUIOptionsPanel()
        {
            GUILayout.Label("Options", EditorStyles.boldLabel);
            GUILayout.Space(_VerticalSkip);
            EditorGUILayout.BeginVertical("box");
            EditorGUILayout.BeginHorizontal();
            {
                Config.DisplayStatusIcons = EditorGUILayout.Toggle(Config.DisplayStatusIcons, CheckWidth);
                GUILayout.Label("Display Status Icons");
            }
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            {
                Config.CheckStatusForMenus = EditorGUILayout.Toggle(Config.CheckStatusForMenus, CheckWidth);
                GUILayout.Label("Gray out invalid menu options", TextWidth);
            }
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            {
                GUILayout.Label("Don't check if more than");
                Config.CheckStatusForMenusMaxItems = EditorGUILayout.IntField(Config.CheckStatusForMenusMaxItems, IntWidth);
                GUILayout.Label("files selected");

                GUILayout.FlexibleSpace();
            }
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            {
                GUILayout.Label("Diff Tool Executable ");
                if (GUILayout.Button("Browse...", EditorStyles.miniButton, ButtonWidth))
                {
                    string dir;
                    string path;

                    GUI.FocusControl("");
                    if (Config.DiffToolPathname.Length > 0)
                    {
                        dir = System.IO.Directory.GetParent(Config.DiffToolPathname).FullName;
                    }
                    else
                    {
                        dir = System.Environment.GetFolderPath(System.Environment.SpecialFolder.ProgramFiles);
                    }
                    path = EditorUtility.OpenFilePanel("Choose Diff Tool Executable", dir, "");
                    if (path.Length > 0)
                    {
                        Config.DiffToolPathname = path;
                    }
                }
                GUILayout.FlexibleSpace();
            }
            EditorGUILayout.EndHorizontal();
            EditorGUILayout.BeginHorizontal();
            {
                GUILayout.Label(" ", IndentWidth);
                Config.DiffToolPathname = GUILayout.TextField(Config.DiffToolPathname, GUILayout.MinWidth(80.0f), GUILayout.ExpandWidth(true));
            }
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            {
                Config.AskBeforeCheckout = EditorGUILayout.Toggle(Config.AskBeforeCheckout, CheckWidth);
                GUILayout.Label("Ask before checkout on edit");
            }
            EditorGUILayout.EndHorizontal();
            EditorGUILayout.BeginHorizontal();
            {
                Config.WarnOnSpecialCharacters = EditorGUILayout.Toggle(Config.WarnOnSpecialCharacters, CheckWidth);
                GUILayout.Label("Reserved character warning (@#*%)");
            }
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            Config.IncludeSolutionFiles = EditorGUILayout.Toggle(Config.IncludeSolutionFiles, CheckWidth);
            GUILayout.Label("Include Solution Files");
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            Config.IncludeProjectFiles = EditorGUILayout.Toggle(Config.IncludeProjectFiles, CheckWidth);
            GUILayout.Label("Include Project Files");
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            Config.UnityVsSupport = EditorGUILayout.Toggle(Config.UnityVsSupport, CheckWidth);
            GUILayout.Label("Integrate with UnityVS", TextWidth);
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            Config.UseTypemap = EditorGUILayout.Toggle(Config.UseTypemap, CheckWidth);
            GUILayout.Label("Use Perforce server typemap", TextWidth);
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            {
                GUILayout.Label("Close Perforce connection after");
                Config.ConnectionTimeOut = EditorGUILayout.IntField(Config.ConnectionTimeOut, IntWidth);
                GUILayout.Label("seconds");
                GUILayout.FlexibleSpace();
            }
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            {
                GUILayout.Label("p4ignore: ");
                if (GUILayout.Button("Browse...", EditorStyles.miniButton, ButtonWidth))
                {
                    string dir;
                    string path;

                    GUI.FocusControl("");
                    if (Config.IgnoreName.Length > 0)
                    {
                        dir = System.IO.Directory.GetParent(Config.IgnoreName).FullName;
                    }
                    else
                    {
                        dir = Main.RootPath;
                    }
                    path = EditorUtility.OpenFilePanel("Choose P4Ignore File", dir, "");
                    if (path.Length > 0)
                    {
                        Config.IgnoreName = path;
                    }
                }
                GUILayout.FlexibleSpace();
            }
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            {
                GUILayout.Label(" ", IndentWidth);
                Config.IgnoreName = GUILayout.TextField(Config.IgnoreName, GUILayout.MinWidth(80.0f), GUILayout.ExpandWidth(true));
            }
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            {
                GUILayout.Label("Additional Ignore Lines:");
            }
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            {
                GUILayout.Label(" ", IndentWidth);
                Config.IgnoreLines = EditorGUILayout.TextArea(Config.IgnoreLines, GUILayout.MinHeight(16.0f), GUILayout.MinWidth(200.0f), GUILayout.ExpandWidth(true));
            }
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            GUILayout.Label(ContentSaveTypeEnum);
            Config.SaveMode = (Config.SaveSettingsMode)EditorGUILayout.EnumPopup(Config.SaveMode, WideEnumWidth);
            GUILayout.FlexibleSpace();
            EditorGUILayout.EndHorizontal();

            GUILayout.EndVertical();   // BOX
        }

        #endregion

        #region DiagnosticsPanel

        private void OnGUIDiagnosticsPanel()
        {
            GUILayout.Label("Diagnostics", EditorStyles.boldLabel);
            GUILayout.Space(_VerticalSkip);
            EditorGUILayout.BeginVertical("box");

            EditorGUILayout.BeginHorizontal();
            Config.DisplayP4Timings = EditorGUILayout.Toggle(Config.DisplayP4Timings, CheckWidth);
            GUILayout.Label("Display P4 Timings");
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            Config.EchoP4Commands = EditorGUILayout.Toggle(Config.EchoP4Commands, CheckWidth);
            GUILayout.Label("Echo P4 Commands to log");
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            Config.ShowPaths = EditorGUILayout.Toggle(Config.ShowPaths, CheckWidth);
            GUILayout.Label("Show File Paths in Console");
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            {
                EditorGUI.BeginDisabledGroup(Config.LogPath.Length == 0);
                {
                    bool newEnableLog = EditorGUILayout.Toggle(Config.EnableLog, CheckWidth);
                    if (newEnableLog != Config.EnableLog)
                    {
                        Config.EnableLog = newEnableLog;
                        Logger.Initialize();
                    }
                }
                EditorGUI.EndDisabledGroup();

                GUILayout.Label("Enable Logging");
            }
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            {
                GUILayout.Label("Log File: ");
                if (GUILayout.Button("Browse...", EditorStyles.miniButton, ButtonWidth))
                {
                    GUI.FocusControl("");

                    if (Config.LogPath.Length == 0)
                    {
                        Config.LogPath = Config.DefaultLogFile();
                    }
                    string dir = System.IO.Directory.GetParent(Config.LogPath).FullName;

                    string path = EditorUtility.SaveFilePanel("Set P4Connect Log File", dir, "p4connect", "log");

                    if (path.Length > 0)
                    {
                        Config.LogPath = path;
                        Config.EnableLog = true;
                    }
                }
                if (Config.LogPath.Length == 0)
                {
                    Config.EnableLog = false;
                }
                GUILayout.FlexibleSpace();
            }
            EditorGUILayout.EndHorizontal();
            EditorGUILayout.BeginHorizontal();
            {
                GUILayout.Label(" ", IndentWidth);
                Config.LogPath = GUILayout.TextField(Config.LogPath, GUILayout.MinWidth(80.0f), GUILayout.ExpandWidth(true));
                GUILayout.FlexibleSpace();
            }
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            GUILayout.Label(ContentConsoleLogEnum);
            Config.ConsoleLogLevel = (Logger.LogLevel)EditorGUILayout.EnumPopup(Config.ConsoleLogLevel, EnumWidth);
            GUILayout.FlexibleSpace();
            EditorGUILayout.EndHorizontal();


            GUILayout.EndVertical();

            GUILayout.Label("Utilities", EditorStyles.boldLabel);
            GUILayout.Space(_VerticalSkip);
            EditorGUILayout.BeginVertical("Box");
            EditorGUILayout.BeginHorizontal();
            if (GUILayout.Button("Delete Configuration Asset", EditorStyles.miniButton, BoxWidth))
            {
                if (EditorUtility.DisplayDialog("Delete Configuration Asset",
                 "Are you sure you want to delete this asset?", "OK", "Cancel"))
                {
                    Config.DeleteConfigAsset();
                }
            }
            EditorGUILayout.EndHorizontal();

            EditorGUILayout.BeginHorizontal();
            if (GUILayout.Button("Clear Editor Prefs", EditorStyles.miniButton, BoxWidth))
            {
                if (EditorUtility.DisplayDialog("Remove All EditorPrefs",
                    "Are you sure you want to remove ALL Unity EditorPreferences?", "OK", "Cancel"))
                {
                    EditorPrefs.DeleteAll();
                }
            }
            EditorGUILayout.EndHorizontal();
            GUILayout.Space(_VerticalSkip);
            EditorGUILayout.BeginHorizontal();
            if (GUILayout.Button(ContentDocLink, EditorStyles.miniButton, BoxWidth))
            {
                System.Diagnostics.Process.Start("http://www.perforce.com/perforce/doc.current/manuals/p4connectguide/index.html");
            }
            EditorGUILayout.EndHorizontal();
            GUILayout.EndVertical();
        }

        #endregion

        [SerializeField]
        Vector2 vScroll = Vector2.zero;

        /// <summary>
        /// Called by Unity when the windows needs to be updated 
        /// </summary>
        void OnGUI()
        {

            if (Event.current == null || Application.isPlaying) { GUIUtility.ExitGUI(); }

            if (PasswordPrompt.Active)
            {
                return;
            }

            if (!_stylesInitialized)
            {
                InitializeStyles();
                _stylesInitialized = true;
            }

            vScroll = EditorGUILayout.BeginScrollView(vScroll, false, false);

            // Show the status bar
            OnGuiStatusBar();

            OnGuiSettings();

            EditorGUILayout.EndScrollView(); // Scroll View Wrapper for dialog
        }



        //     public static SerializationMode CachedSerializationMode
        //     {
        //         get;
        //         private set;
        //     }

        //    public static bool SettingsSaved
        //     {
        //         get; set;
        //      }


    }
}