using System;

using System.IO;

using System.Text;

using System.Windows.Forms;

using WeifenLuo.WinFormsUI.Docking;

using ScintillaNet;



namespace MyNotepad

{

    public partial class TabbedNote : DockContent

    {

        string filename;

        FileInfo info;

        bool isSaved, isDirty;



        public TabbedNote()

        {

            InitializeComponent();

            this.TabText = "My Unsaved Note";

            isSaved = false;

            isDirty = false;

            info = null;

        }



        public Scintilla ScintillaContent

        {

            get { return this.containedText; }

            set { this.containedText = value; }

        }



        public TabbedNote(FileInfo f)

        {

            InitializeComponent();

            info = f;



            try

            {

                LoadText(f.FullName);

            }

            catch (IOException err)

            {

                MessageBox.Show(err.Message, "My Notepad", MessageBoxButtons.OK, MessageBoxIcon.Error);

            }



            this.TabText = f.Name;

            isSaved = true;

            isDirty = false;

            filename = f.Name;



            ChangeOnOpenorSave(f.Extension);            

        }



        private void ChangeOnOpenorSave(string ext)

        {

            ext = ext.ToLower();

            switch (ext)

            {

                case ".c":

                    LanguageChange("c");

                    break;

                case ".cpp":

                    LanguageChange("cpp");

                    break;

                case ".cs":

                    LanguageChange("cs");

                    break;

                case ".html":

                case ".htm":

                    LanguageChange("html");

                    break;

                case ".java":

                    LanguageChange("java");

                    break;

            }

        }



        void LoadText(string file)

        {

            StreamReader toRead = new StreamReader(file);

            ContainedText = toRead.ReadToEnd();

            toRead.Close();

        }



        public bool Saved

        {

            get { return isSaved; }

            set { isSaved = value; }

        }



        public bool Dirty

        {

            get { return isDirty; }

            set { isDirty = value; }

        }



        public string ContainedText

        {

            get { return containedText.Text; }

            set { containedText.Text = value; }

        }



        private void SaveAs(string name)

        {

            try

            {

                StreamWriter toWrite = new StreamWriter(name);

                toWrite.Write(ContainedText);

                toWrite.Close();

                filename = name;

                isDirty = false;

                isSaved = true;

                FileInfo f = new FileInfo(name);

                this.TabText = f.Name;

                info = f;

                ChangeOnOpenorSave(f.Extension);

            }

            catch (IOException err)

            {

                MessageBox.Show(err.Message, "My Notepad", MessageBoxButtons.OK, MessageBoxIcon.Error);            

            }

        }



        public void Save()

        {

            if (isSaved)

            {

                if (isDirty)

                    SaveAs(filename);

            }

            else

                SaveFileAs();

        }



        private void ContainedTextChanged(object sender, EventArgs e)

        {

            //isDirty = true;

        }



        public void SaveFileAs()

        {

            SaveFileDialog save = new SaveFileDialog();

            save.Title = "Save As...";

            string filter = "C Files (*.c)|*.c|";

            filter += "C++ Files (*.cpp)|*.cpp|";

            filter += "C# Files (*.cs)|*.cs|";

            filter += "Java Files (*.java)|*.java|";

            filter += "HTML Files (*.html)|*.html|";

            filter += "Text Files (*.txt)|*.txt|";

            filter += "All Files (*.*)|*.*";

            save.Filter = filter;

            save.AddExtension = true;

            save.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);

            save.DefaultExt = ".txt";

            if (save.ShowDialog() == DialogResult.OK)

                SaveAs(save.FileName);

        }



        public FileInfo Info

        {

            get { return this.info; }

        }



        private void NoteClosing(object sender, FormClosingEventArgs e)

        {

            if (isDirty)

            {

                string str = "";

                if (info == null)

                    str = "File not saved. Would you like to save it?";

                else

                    str = "File " + info.Name + " not saved. Would you like to save it?";

                DialogResult rslt = MessageBox.Show(str, "My Notepad", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Warning);

                switch (rslt)

                {

                    case DialogResult.Yes:

                        if (isSaved)

                            SaveAs(this.filename);

                        else

                        {

                            SaveFileDialog save = new SaveFileDialog();

                            save.Title = "Save As...";

                            save.Filter = "Text Files (*.txt)|*.txt|All Files (*.*)|*.*";

                            DialogResult saveRslt = save.ShowDialog();

                            switch (saveRslt)

                            {

                                case DialogResult.OK:

                                    SaveAs(save.FileName);

                                    break;

                                case DialogResult.Cancel:

                                    e.Cancel = true;

                                    break;

                            }

                        }

                        break;

                    case DialogResult.Cancel:

                        e.Cancel = true;

                        break;

                }

            }

        }



        private void TextInserted(object sender, TextModifiedEventArgs e)

        {

            isDirty = true;

            if (!this.TabText.StartsWith("*"))

            {

                string str = this.TabText.Insert(0, "*");

                this.TabText = str;

            }

        }



        private void TextDeleted(object sender, TextModifiedEventArgs e)

        {

            isDirty = true;

            if (!this.TabText.StartsWith("*"))

            {

                string str = this.TabText.Insert(0, "*");

                this.TabText = str;

            }

        }



        public void LanguageChange(string lang)

        {

            try

            {

                switch (lang)

                {

                    case "c":

                        containedText.ConfigurationManager.Language = "c";

                        containedText.Lexing.Colorize();

                        break;

                    case "cpp":

                        containedText.ConfigurationManager.Language = "cpp";

                        containedText.Lexing.Colorize();

                        break;

                    case "cs":

                        containedText.ConfigurationManager.Language = "cs";

                        containedText.Lexing.Colorize();

                        break;

                    case "html":

                        containedText.ConfigurationManager.Language = "html";

                        containedText.Lexing.Colorize();

                        break;

                    case "java":

                        containedText.ConfigurationManager.Language = "java";

                        containedText.Lexing.Colorize();

                        break;

                }

            }

            catch (FileNotFoundException)

            {

                switch (lang)

                {

                    case "c":

                        if (!Properties.Settings.Default.c)

                        {

                            ShowNotFoundError(lang);

                            Properties.Settings.Default.c = true;                            

                        }

                        break;

                    case "cpp":

                        if (!Properties.Settings.Default.cpp)

                        {

                            ShowNotFoundError(lang);

                            Properties.Settings.Default.cpp = true;

                        }

                        break;

                    case "cs":

                        if (!Properties.Settings.Default.cs)

                        {

                            ShowNotFoundError(lang);

                            Properties.Settings.Default.cs = true;

                        }

                        break;

                    case "html":

                        if (!Properties.Settings.Default.html)

                        {

                            ShowNotFoundError(lang);

                            Properties.Settings.Default.html = true;

                        }

                        break;

                    case "java":

                        if (!Properties.Settings.Default.java)

                        {

                            ShowNotFoundError(lang);

                            Properties.Settings.Default.java = true;

                        }

                        break;

                }

                Properties.Settings.Default.Save();

            }

        }



        private void ShowNotFoundError(string lang)

        {

            MessageBox.Show("The highlighter for " + lang + " was not found. This will not be shown again. Reinstall My Notepad to get it.", "My Notepad", MessageBoxButtons.OK, MessageBoxIcon.Warning);            

        }

    }

}