public override void Update(GUIControlContext Context, double Time)
{
// Handle mouse selection.
MouseState ms = Context.MouseState;
if (ms != null)
{
if (this._MouseDrag)
{
if(ms.IsButtonDown(MouseButton.Left))
{
this._Selection.End = this._SelectedIndex(ms.Position);
}
else
{
Context.ReleaseMouse();
this._MouseDrag = false;
}
}
if (ms.HasPushedButton(MouseButton.Left))
{
Context.CaptureMouse();
Context.CaptureKeyboard();
this._Selection = new TextSelection(this._SelectedIndex(ms.Position));
this._MouseDrag = true;
}
}
}
public override void Update(GUIControlContext Context, double Time)
{
// Handle mouse selection.
MouseState ms = Context.MouseState;
if (ms != null)
{
if (this._MouseDrag)
{
if(ms.IsButtonDown(MouseButton.Left))
{
this._Selection.End = this._SelectedIndex(ms.Position);
}
else
{
Context.ReleaseMouse();
this._MouseDrag = false;
}
}
if (ms.HasPushedButton(MouseButton.Left))
{
Context.CaptureMouse();
Context.CaptureKeyboard();
this._Selection = new TextSelection(this._SelectedIndex(ms.Position));
this._MouseDrag = true;
}
}
TextSelection ts = this._Selection;
if (ts != null && !Context.HasKeyboard)
{
this._Selection = ts = null;
if (this.TextEntered != null)
{
this.TextEntered(this._Text);
}
}
// Flash the cursor
this._CursorFlashTime += Time;
double cfr = this._Style.CursorFlashRate;
while (this._CursorFlashTime > cfr)
{
this._CursorFlashTime -= cfr * 2.0;
}
// Update text
KeyboardState ks = Context.KeyboardState;
if (ks != null && ts != null)
{
bool changed = false;
foreach (char c in ks.Presses)
{
int starti;
int endi;
ts.Order(out starti, out endi);
if (c == '\b')
{
if (endi - starti > 0)
{
if(this._TryChangeText(this._Text.Substring(0, starti) + this._Text.Substring(endi, this._Text.Length - endi)))
{
this._Selection = new TextSelection(starti);
changed = true;
}
}
else
{
if (starti > 0)
{
if (this._TryChangeText(this._Text.Substring(0, starti - 1) + this._Text.Substring(starti, this._Text.Length - starti)))
{
this._Selection = new TextSelection(starti - 1);
changed = true;
}
}
}
continue;
}
if (ValidChar(c))
{
if (this._TryChangeText(this._Text.Substring(0, starti) + c + this._Text.Substring(endi, this._Text.Length - endi)))
{
this._Selection = new TextSelection(starti + 1);
changed = true;
}
}
}
if (changed)
{
this._CursorFlashTime = 0.0;
this._TextSample.Dispose();
this._MakeTextSample();
}
// Navigation
foreach (KeyEvent ke in ks.Events)
{
if (ke.Type == ButtonEventType.Down)
{
int ss = this._Selection.Start;
if (ke.Key == Key.Left)
{
if (ss > 0)
{
this._Selection = new TextSelection(ss - 1);
}
}
if (ke.Key == Key.Right)
{
if (ss < this._Text.Length)
{
this._Selection = new TextSelection(ss + 1);
}
}
}
}
// Enter?
if (ks.IsKeyDown(Key.Enter))
{
this._Selection = null;
Context.ReleaseKeyboard();
if (this.TextEntered != null)
{
this.TextEntered(this._Text);
}
}
}
}