TrayFolder.cs

/*
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.    
*/
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Microsoft.Win32;
using static System.Windows.Forms.VisualStyles.VisualStyleElement;
using static System.Windows.Forms.VisualStyles.VisualStyleElement.Button;

namespace TrayFolder
{
  public partial class TrayFolder : Form
  {
    const string KEY_FOLDER = "Folder";
    const string APPNAME = "TrayFolder";

    private SystemIconsImageList SystemIcons = new SystemIconsImageList();
    private ToolStripMenuItem SettingMenu;

    public TrayFolder()
    {
      InitializeComponent();

      Icon = Win32.GetStockIcon(Win32.SHSIID_FOLDER, Win32.SHGSI_LARGEICON);
      DialogResult = DialogResult.OK;
      SettingMenu = CreateSettingMenu();

      TrayIcon.Icon = this.Icon;
      TrayIcon.Click += OnTrayIconClick;

      TextPath.Text = Properties.Settings.Default.FolderPath;
      HideExtensions.Checked = Properties.Settings.Default.HideExtensions;
      TrayIcon.Text = Properties.Settings.Default.FolderName;
      IconName.Text = Properties.Settings.Default.FolderName;
      NumericDepth.Value = Properties.Settings.Default.MaxDepth;
      OpenFolders.Checked = Properties.Settings.Default.OpenFolders;
      LaunchStartup.Checked = GetLaunchOnStartup();
      NumericFailSafe.Value = Properties.Settings.Default.FailSafe;

      Text = APPNAME + " v" + Application.ProductVersion;
    }

    protected override void OnLoad( EventArgs e )
    {
      if(IsValid())
      {
        HideMe();
        UpdateMenu();
      }

      base.OnLoad(e);
    }

    private bool IsValid()
    {
      if(Properties.Settings.Default.FirstRun)
        return (false);
      if(String.IsNullOrWhiteSpace(TextPath.Text))
        return (false);
      if(Directory.Exists(TextPath.Text) == false)
        return (false);
      return (true);
    }

    private void OnTrayIconClick( object sender, EventArgs e )
    {
      MouseEventArgs me = (MouseEventArgs)e;

      Win32.SetForegroundWindow(new HandleRef(FolderMenu, FolderMenu.Handle));
      SettingMenu.Visible = me.Button == MouseButtons.Right;

      FolderMenu.Show(Cursor.Position);
    }

    private void OnSelectFolder( object sender, EventArgs e )
    {
      FolderBrowserDialog fbd = new FolderBrowserDialog();

      fbd.SelectedPath = TextPath.Text;
      if(fbd.ShowDialog(this) == DialogResult.OK)
      {
        TextPath.Text = fbd.SelectedPath;
        UpdateMenu();
      }
    }


    public ToolStripMenuItem CreateSettingMenu()
    {
      ToolStripMenuItem Settings = new ToolStripMenuItem("Setup");
      // Settings.Image = DefaultIcons.Extract("shell32.dll", 21, false).ToBitmap();

      ToolStripMenuItem MenuSettings = new ToolStripMenuItem("Settings...");
      MenuSettings.Click += OnMenuSettings;
      Settings.DropDownItems.Add(MenuSettings);
      Settings.DropDownItems.Add(new ToolStripSeparator());

      ToolStripMenuItem MenuUpdate = new ToolStripMenuItem("Update Folders");
      MenuUpdate.Click += OnMenuUpdate;
      Settings.DropDownItems.Add(MenuUpdate);
      Settings.DropDownItems.Add(new ToolStripSeparator());

      ToolStripMenuItem MenuQuit = new ToolStripMenuItem("Quit");
      MenuQuit.Click += OnQuit;
      Settings.DropDownItems.Add(MenuQuit);

      return (Settings);
    }

    private void UpdateMenu()
    {
      MenuBuilder Builder = new MenuBuilder(SystemIcons)
      {
        HideExtensions = HideExtensions.Checked,
        MaxDepth = (int)NumericDepth.Value,
        OpenFolders = OpenFolders.Checked,
      };

      Builder.UpdateMenu(TextPath.Text, FolderMenu);
      FolderMenu.Items.Add(SettingMenu);
    }

    private void OnSave( object sender, EventArgs e )
    {
      Properties.Settings.Default.FirstRun = false;
      Properties.Settings.Default.FolderName = IconName.Text;
      Properties.Settings.Default.FolderPath = TextPath.Text;
      Properties.Settings.Default.HideExtensions = HideExtensions.Checked;
      Properties.Settings.Default.MaxDepth = (int)NumericDepth.Value;
      Properties.Settings.Default.FailSafe = (int)NumericFailSafe.Value;
      Properties.Settings.Default.OpenFolders = OpenFolders.Checked;
      Properties.Settings.Default.Save();
      TrayIcon.Text = IconName.Text;

      if(IsValid())
      {
        HideMe();
        UpdateMenu();
      }
    }

    protected override void OnClosing( CancelEventArgs e )
    {
      if(DialogResult == DialogResult.OK)
      {
        e.Cancel = true;
        HideMe();
      }
      base.OnClosing(e);
    }

    private void HideMe()
    {
      Visible = false;
      ShowInTaskbar = false;
    }

    private void OnMenuUpdate( object sender, EventArgs e )
    {
      UpdateMenu();
    }

    private void OnQuit( object sender, EventArgs e )
    {
      DialogResult = DialogResult.Cancel;
      Close();
    }

    private void OnMenuSettings( object sender, EventArgs e )
    {
      ShowInTaskbar = true;
      Visible = true;
    }

    private bool GetLaunchOnStartup()
    {
      try
      {
        RegistryKey key = Registry.CurrentUser.OpenSubKey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", true);
        return (key.GetValue(APPNAME) as String == Application.ExecutablePath);
      }
      catch
      {
      }
      return (false);
    }

    private void OnLaunchOnStartup( object sender, EventArgs e )
    {
      try
      {
        RegistryKey regkey = Registry.CurrentUser.OpenSubKey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", true);
        if(LaunchStartup.Checked)
        {
          regkey.SetValue(APPNAME, Application.ExecutablePath, RegistryValueKind.String);
        }
        else
        {
          regkey.DeleteValue(APPNAME, false);
        }
      }
      catch(Exception ex)
      {
        MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
      }
    }
  }
}