using System;
using System.Data;
using System.IO;
using System.Windows.Forms;

namespace ContentManagement
{
    public partial class ContentEditor : Form
    {
        public string XmlDataFile { get; set; }

        public ContentEditor()
        {
            XmlDataFile = "Content.xml";
            InitializeComponent();
            InitializeData();
        }

        private void InitializeData()
        {
            openFileDialog.FileName = XmlDataFile;
            OpenCurrentFile();
            LoadData();
            Focus();
        }

        private void OpenCurrentFile()
        {
            openFileDialog.ShowDialog();
            XmlDataFile = openFileDialog.FileName;
        }

        private void contentBindingNavigatorSaveItem_Click(object sender, EventArgs e)
        {
            SaveContent();
        }

        private void saveToolStripMenuItem_Click(object sender, EventArgs e)
        {
            saveFileDialog.ShowDialog();
            XmlDataFile = saveFileDialog.FileName;
            SaveContent();
        }

        private void SaveContent()
        {
            try
            {
                contentSource.EndEdit();
                contentData.WriteXml(XmlDataFile, XmlWriteMode.WriteSchema);
            }
            catch (Exception ex)
            {
                MessageBox.Show("Error saving content:\n" + ex.Message);
            }
        }

        private void loadToolStripMenuItem_Click(object sender, EventArgs e)
        {
            OpenCurrentFile();
            LoadData();
        }

        private void LoadData()
        {
            if (!File.Exists(XmlDataFile))
                contentData.WriteXml(XmlDataFile, XmlWriteMode.WriteSchema);

            contentData.Clear();
            contentData.ReadXml(XmlDataFile);
        }

    }
}