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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Threading;
namespace Tango.Logging
{
/// <summary>
/// Represents a debugging (write-only) console emulator.
/// </summary>
public partial class ConsoleWindow : Window
{
private bool _closing;
private SolidColorBrush _currentBrush;
private ConsoleColor _current_color;
/// <summary>
/// Initializes a new instance of the <see cref="ConsoleWindow"/> class.
/// </summary>
public ConsoleWindow()
{
InitializeComponent();
txtLog.Document.LineHeight = 12;
txtLog.Document.PageWidth = 4000;
_currentBrush = Brushes.Gainsboro;
AppendLog("--------------------- Twine Console Emulator ---------------------" + Environment.NewLine + Environment.NewLine);
Closing += ConsoleWindow_Closing;
}
/// <summary>
/// Handles the Closing event of the ConsoleWindow control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.ComponentModel.CancelEventArgs"/> instance containing the event data.</param>
private void ConsoleWindow_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
_closing = true;
}
/// <summary>
/// Appends the specified .
/// </summary>
/// <param name="obj">The object.</param>
public void WriteLine(object obj)
{
AppendLog(obj.ToString() + Environment.NewLine);
}
/// <summary>
/// Writes the specified object.
/// </summary>
/// <param name="obj">The object.</param>
public void Write(object obj)
{
AppendLog(obj.ToString());
}
/// <summary>
/// Sets the console foreground color.
/// </summary>
/// <param name="color">The color.</param>
public void SetColor(ConsoleColor color)
{
if (_current_color != color)
{
_current_color = color;
InvokeUI(() => _currentBrush = new SolidColorBrush((Color)ColorConverter.ConvertFromString(color.ToString())));
}
}
private void AppendLog(String log)
{
InvokeUI(() =>
{
TextRange tr = new TextRange(txtLog.Document.ContentEnd, txtLog.Document.ContentEnd);
tr.Text = log;
tr.ApplyPropertyValue(TextElement.ForegroundProperty, _currentBrush);
Rect r = txtLog.Document.ContentEnd.GetCharacterRect(LogicalDirection.Forward);
txtLog.ScrollToVerticalOffset(r.Y);
});
}
/// <summary>
/// Opens the console.
/// </summary>
public void Open()
{
Show();
}
/// <summary>
/// Closes the console.
/// </summary>
public new void Close()
{
Close();
}
/// <summary>
/// Waits until user closes the window.
/// </summary>
/// <returns></returns>
public async Task WaitForUserClose()
{
WriteLine("");
WriteLine("Close this window to exit...");
await Task.Factory.StartNew(() =>
{
while (!_closing)
{
Thread.Sleep(10);
}
});
}
/// <summary>
/// Invokes the UI.
/// </summary>
/// <param name="action">The action.</param>
private void InvokeUI(Action action)
{
Dispatcher.Invoke(action);
DoEvents();
}
/// <summary>
/// Forces the next rendering thread frame.
/// </summary>
private void DoEvents()
{
if (Application.Current == null) //Using this to enable processing outside a WPF application.
{
new Application { ShutdownMode = ShutdownMode.OnExplicitShutdown };
}
Application.Current.Dispatcher.Invoke(DispatcherPriority.Background, new Action(delegate { }));
}
}
}
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