/HiddenFileManager/MainForm.cs

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.IO;

using Microsoft.Win32;

using HiddenFileManager.Properties;



namespace HiddenFileManager

{

    public partial class MainForm : Form

    {

        readonly Color TextBoxActiveColor = Color.FromArgb(255, 255, 255, 128);



        FileItemList _allItems;



        public MainForm()

        {

            InitializeComponent();



            try

            {

                _allItems = new FileItemList(ListFileName);

            }

            catch (Exception e)

            {

                // Delete the problematic file

                File.Delete(ListFileName);

                _allItems = new FileItemList(ListFileName);

            }



            // Initialize UI

            lbListOverlay.Bounds = lvItems.Bounds;

            lbListOverlay.Anchor = AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Top;

            _privacyMode = true;

            PrivacyMode = false;



            // Read stored values

            PrivacyMode = Settings.Default.PrivacyMode;



            // Status bar

            lbStatusAction.Visible = ShowHiddenFilesStatus;

            lbStatus.Text = Resources.statusDragToAdd;

        }



        String ListFileName

        {

            get

            {

                return

                    Path.Combine(Environment.GetFolderPath(

                        Environment.SpecialFolder.ApplicationData),

                        "HFM_TrackedItems.txt.enc");

            }

        }



        void FillItemList()

        {

            // Clear highlight if it was present

            tbFilter.BackColor = SystemColors.Window;



            this.lvItems.ItemChecked -= lvItems_ItemChecked;



            lvItems.Items.Clear();

            if (_allItems != null)

            {

                lbStatus.Text = String.Format(Resources.statusItemsTracked, _allItems.Count);

            }



            // No items

            String filter = Filter;

            if (_allItems != null && 

                filter != null) // null -- no items

            {

                // Filter

                lvItems.BeginUpdate();



                foreach (FileItem item in _allItems)

                {

                    if (filter == String.Empty || // all items 

                        item.Matches(Filter))

                    {

                        lvItems.Items.Add(item);

                    }

                }

                lvItems.EndUpdate();

            }



            UpdateOverlayLabel();



            this.lvItems.ItemChecked += lvItems_ItemChecked;

        }



        void UpdateOverlayLabel()

        {

            if (lvItems.Items.Count == 0)

            {

                if (_allItems == null || _allItems.Count == 0)

                {

                    lbListOverlay.Text = Resources.overlayDragItems;

                }

                else 

                {

                    lbListOverlay.Text = PrivacyMode ?

                        Resources.overlayPrivacyMode :

                        Resources.overlayNoItemsFound;

                }

                lbListOverlay.Visible = true;

            }

            else

            {

                lbListOverlay.Visible = false;

            }

        }





        private void cbPrivacyMode_CheckedChanged(object sender, EventArgs e)

        {

            PrivacyMode = cbPrivacyMode.Checked;

            Settings.Default.PrivacyMode = PrivacyMode;

            Settings.Default.Save();

        }



        bool _privacyMode = false;

        bool PrivacyMode

        {

            get { return _privacyMode; }

            set

            {

                if (value == _privacyMode) { return; }



                _privacyMode = value;

                if (cbPrivacyMode.Checked != _privacyMode)

                {

                    cbPrivacyMode.Checked = _privacyMode;                    

                }



                SuspendLayout();



                // TODO: preserve when going OUT of privacy mode

                if (_privacyMode)

                {

                    Text = Resources.titlePrivacyMode;



                    pTopBar.BackColor = Color.Silver;

                    pbSpy.Visible = true;

                    bShow.Visible = true;

                    tbFilter.Width -= bShow.Width;



                    // Clear the filter, for privacy

                    tbFilter.Text = "";



                    FillItemList();



                    tbFilter.BackColor = TextBoxActiveColor;

                    tbFilter.Select();

                }

                else

                {

                    Text = Resources.titleNormal;



                    pTopBar.BackColor = SystemColors.Control;

                    pbSpy.Visible = false;

                    bShow.Visible = false;

                    tbFilter.BackColor = Color.White;

                    tbFilter.Width += bShow.Width;



                    FillItemList();

                }



                ResumeLayout();

            }

        }



        private void bShow_Click(object sender, EventArgs e)

        {

            FillItemList();

        }



        private void lvItems_MouseClick(object sender, MouseEventArgs e)

        {

            if (e.Button == MouseButtons.Left && 

                e.X > 16) // Prevents revert on checkbox itself

            {

                // Switch selected items depending on the first one



                if (lvItems.SelectedItems.Count > 0)

                {

                    bool state = !lvItems.SelectedItems[0].Checked;

                    foreach(FileItem item in lvItems.SelectedItems)

                    {

                        item.Checked = state;

                    }

                }



                /*

                FileItem item = lvItems.GetItemAt(e.X, e.Y) as FileItem;

                if (item != null)

                {

                    item.Checked = !item.Checked;

                }

                 */

            }

        }



        private void lvItems_ItemChecked(object sender, ItemCheckedEventArgs e)

        {

            FileItem fsi = e.Item as FileItem;

            if (fsi == null) { return; }

            if (fsi.Status != ItemStatus.Visible && fsi.Status != ItemStatus.Hidden) { return; }

            

            fsi.SetHidden(e.Item.Checked);            

        }



        private void tbFilter_TextChanged(object sender, EventArgs e)

        {

            if (PrivacyMode)

            {

                tbFilter.BackColor = TextBoxActiveColor;

            }

            else

            {

                FillItemList();

            }

        }



        private void tbFilter_KeyUp(object sender, KeyEventArgs e)

        {

            if (e.KeyCode == Keys.Enter)

            {

                FillItemList();

            }

        }



        public String Filter

        {

            get

            {

                if (String.IsNullOrEmpty(tbFilter.Text))

                {

                    if (PrivacyMode) { return null; } // no items

                    else { return String.Empty; } // all items

                }

                return tbFilter.Text;

            }

        }



        private void lvItems_DragDrop(object sender, DragEventArgs e)

        {

            if (!e.Data.GetDataPresent("FileDrop")) { return; }



            String[] files = e.Data.GetData("FileDrop", true) as String[];

            _allItems.AddItems(files);

            FillItemList();

        }



        private void lvItems_DragEnter(object sender, DragEventArgs e)

        {

            if (e.Data.GetDataPresent("FileDrop"))

            {

                e.Effect = DragDropEffects.Link;

            }

            else 

            {

                e.Effect = DragDropEffects.None;

            }

        }



        private void lvItems_KeyDown(object sender, KeyEventArgs e)

        {

            if (e.KeyCode == Keys.Delete)

            {

                if (lvItems.SelectedItems.Count > 0)

                {

                    int selectedIndex = lvItems.SelectedIndices[0];

                    lvItems.BeginUpdate();

                    foreach (FileItem item in lvItems.SelectedItems)

                    {

                        lvItems.Items.Remove(item);

                        _allItems.Remove(item);

                    }

                    lvItems.EndUpdate();



                    if (lvItems.Items.Count > 0)

                    {

                        if (selectedIndex >= lvItems.Items.Count) { selectedIndex = lvItems.Items.Count - 1; }

                        lvItems.SelectedIndices.Add(selectedIndex);

                    }



                    _allItems.Save();



                    UpdateOverlayLabel();

                }

            }

        }



        private void bHideAll_Click(object sender, EventArgs e)

        {

            lvItems.BeginUpdate();

            foreach (FileItem fi in _allItems)

            {

                fi.SetHidden(true);

            }

            lvItems.EndUpdate();

        }



        private void bUnhideAll_Click(object sender, EventArgs e)

        {

            lvItems.BeginUpdate();

            foreach (FileItem fi in _allItems)

            {

                fi.SetHidden(false);

            }

            lvItems.EndUpdate();

        }



        public static bool ShowHiddenFilesStatus

        {

            get

            {

                using (RegistryKey key = Registry.CurrentUser.OpenSubKey(@"Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced"))

                {

                    return (int)key.GetValue("Hidden") == 1;

                }

            }

        }



        private void lbStatusAction_Click(object sender, EventArgs e)

        {

            if (ShowHiddenFilesStatus)

            {

                MessageBox.Show(this,

                    "Hidden items are shown in Windows Explorer. \r\n" +

                    "\r\n" +

                    "To make them invisible: \r\n" +

                    "1) Open any Explorer window \r\n" +

                    "2) Open the menus (press Alt if not visible) \r\n" +

                    "3) Select Tools >> Folder Options \r\n" +

                    "4) Switch to View tab and click \r\n" +

                    "   \"Don't show hidden files, folders, or drives\"\r\n" +

                    "5) Click OK or Apply",

                    "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);

            }

            lbStatusAction.Visible = ShowHiddenFilesStatus;

        }



    }







}