InputManager.cs :  » 2.6.4-mono-.net-core » System.Windows » System » Windows » Input » C# / CSharp Open Source

// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (c) 2007 Novell, Inc. (http://www.novell.com)
//
// Authors:
//  Chris Toshok (toshok@ximian.com)
//

using System;
using System.Collections;

using System.Security;

using System.Windows.Threading;

using System.Windows.Input.X11;
#if notyet
using System.Windows.Input.Win32;
#endif

namespace System.Windows.Input{

  public sealed class InputManager : DispatcherObject {

    static InputManager current;
    KeyboardDevice keyboardDevice;
    MouseDevice mouseDevice;

    internal InputManager ()
    {
    }

    public static InputManager Current {
      [SecurityCritical]
      get {
        if (current == null) {
          current = new InputManager ();

          KeyboardDevice key;
          MouseDevice mouse;

          if (Environment.OSVersion.Platform == PlatformID.Unix) {
            // XXX need a way to differentiate MacOS from linux
            key = new X11KeyboardDevice(current);
            mouse = new X11MouseDevice(current);
          }
          else {
#if notyet
            key = new Win32KeyboardDevice(current);
            mouse = new Win32MouseDevice(current);
#else
            key = null;
            mouse = null;
#endif
          }

          current.SetPrimaryKeyboardDevice (key);
          current.SetPrimaryMouseDevice (mouse);
        }

        return current;
      }
    }

    public ICollection InputProviders {
      [SecurityCritical]
      get {
        throw new NotImplementedException ();
      }
    }

    public InputDevice MostRecentInputDevice {
      get {
        throw new NotImplementedException ();
      }
    }

    public KeyboardDevice PrimaryKeyboardDevice {
      get { return keyboardDevice; }
    }

    public MouseDevice PrimaryMouseDevice {
      get { return mouseDevice; }
    }

    public event EventHandler HitTestInvalidatedAsync;
    public event NotifyInputEventHandler PreNotifyInput;
    public event NotifyInputEventHandler PostNotifyInput;
    public event PreProcessInputEventHandler PreProcessInput;
    public event ProcessInputEventHandler PostProcessInput;

    [SecurityCritical]
    public bool ProcessInput (InputEventArgs input)
    {
      StagingAreaInputItem stagingItem = new StagingAreaInputItem (input);

      PreProcessInputEventArgs preProcessArgs = new PreProcessInputEventArgs(this, stagingItem);
      if (PreProcessInput != null)
        PreProcessInput (this, preProcessArgs);

      NotifyInputEventArgs notifyArgs = new NotifyInputEventArgs(this, stagingItem);
      if (PreNotifyInput != null)
        PreNotifyInput (this, notifyArgs);

#if notyet
      if (!preProcessArgs.Canceled)
        /* XXX route the event */;
#endif

      if (PostNotifyInput != null)
        PostNotifyInput (this, notifyArgs);

      if (PostProcessInput != null) {
        ProcessInputEventArgs processArgs = new ProcessInputEventArgs (this, stagingItem);
        PostProcessInput (this, processArgs);
      }

      return true;
    }

    void SetPrimaryKeyboardDevice (KeyboardDevice keyboardDevice)
    {
      this.keyboardDevice = keyboardDevice;
    }

    void SetPrimaryMouseDevice (MouseDevice mouseDevice)
    {
      this.mouseDevice = mouseDevice;
    }
  }
}