Query/Query/MainForm.cs

using System;
using System.Drawing;
using System.Windows.Forms;
using Base;
using Query.Controls;
using Query.Core;

namespace Query {
	partial class MainForm : Form {
		private readonly CommandProcessor processor;
		private readonly CommandHistory history;

		private readonly Timer focusTimer;
		private readonly KeyboardHook keyboardHook;

		private bool isLoaded;

		public MainForm() {
			InitializeComponent();

			processor = new CommandProcessor {
				SingleTokenProcessor = ProcessSingleToken
			};

			processor.AddApp<AppCalc.App>();
			processor.AddApp<AppConv.App>();
			processor.AddApp<AppMeme.App>();
			processor.AddApp<AppSys.App>();

			history = new CommandHistory();
			queryBox.Setup(history, str => queryLog.AddEntry(str, QueryHistoryLog.EntryType.Information));

			keyboardHook = new KeyboardHook();
			keyboardHook.Triggered += keyboardHook_Triggered;

			focusTimer = new Timer {
				Interval = 1
			};

			focusTimer.Tick += focusTimer_Tick;

			Disposed += MainForm_Disposed;
			queryBox.CommandRan += queryBox_CommandRan;
		}

		private void SetShown(bool show) {
			if (show) {
				focusTimer.Start();
			}
			else {
				Hide();
			}
		}

		private void MainForm_Shown(object sender, EventArgs e) {
			Rectangle screenRect = Screen.PrimaryScreen.WorkingArea;
			Location = new Point(screenRect.X + screenRect.Width - Width, screenRect.Y + screenRect.Height - Height);

			if (!isLoaded) {
				isLoaded = true;
				keyboardHook.StartHook();
			}
		}

		private void MainForm_Deactivate(object sender, EventArgs e) {
			SetShown(false);
		}

		private void MainForm_Disposed(object sender, EventArgs e) {
			keyboardHook.StopHook();
		}

		private void trayIcon_Click(object sender, EventArgs e) {
			if (((MouseEventArgs) e).Button == MouseButtons.Left) {
				SetShown(true);
			}
		}

		private void showToolStripMenuItem_Click(object sender, EventArgs e) {
			SetShown(true);
		}

		private void hookToolStripMenuItem_Click(object sender, EventArgs e) {
			keyboardHook.StopHook();
			keyboardHook.StartHook();
		}

		private void exitToolStripMenuItem_Click(object sender, EventArgs e) {
			Application.Exit();
		}

		private void keyboardHook_Triggered(object sender, EventArgs e) {
			SetShown(!Visible);
		}

		private void focusTimer_Tick(object sender, EventArgs e) {
			WindowState = FormWindowState.Minimized;
			Show();
			Activate();
			WindowState = FormWindowState.Normal;

			queryBox.Focus();
			focusTimer.Stop();
		}

		private void queryBox_CommandRan(object sender, CommandEventArgs e) {
			try {
				string result = processor.Run(e.Command);

				if (result != null) {
					queryLog.AddEntry("> " + e.Command.Text, QueryHistoryLog.EntryType.UserInput);
					history.AddQuery(e.Command.Text);

					queryLog.AddEntry(result, QueryHistoryLog.EntryType.CommandResult);
					history.AddResult(result);
				}
			} catch (CommandException ex) {
				queryLog.AddEntry("> " + e.Command.Text, QueryHistoryLog.EntryType.UserInput);
				history.AddQuery(e.Command.Text);

				queryLog.AddEntry(ex.Message, QueryHistoryLog.EntryType.Error);
			}
		}

		private bool ProcessSingleToken(string token) {
			switch (token) {
				case "exit":
				case "quit":
					Application.Exit();
					return true;

				case "clear":
					queryLog.ClearEntries();
					history.Clear();
					return true;

				case "hide":
					Hide();
					return true;

				default:
					return false;
			}
		}
	}
}