private void KeyUpHandler(object sender, KeyEventArgs e)
{
// if a focus gets messed up, re-focus it here
if (focusedButton != null)
{
focusedButton.Focus();
}
}
private void KeyDownHandler(object sender, KeyEventArgs e)
{
Mouse.Capture(null);
char c = GetCharFromKey(e.Key);
if (char.IsLetter(c) || char.IsPunctuation(c) || char.IsNumber(c))
{
searchString += c;
}
else if (e.Key == Key.Space)
{
searchString += ' ';
}
else if (e.Key == Key.Back && searchString.Length > 0)
{
searchString = searchString.Substring(0, searchString.Length - 1);
}
else if (e.Key == Key.Escape)
{
// if the search bar is open, close it
if (Search.IsOpen)
{
searchString = ""; // don'even wait for it to close to clear the query
Search.IsOpen = false;
}
// otherwise, stop any playing sounds
else
{
ButtonAutomationPeer peer = new ButtonAutomationPeer(Silence);
IInvokeProvider invokeProv = peer.GetPattern(PatternInterface.Invoke) as IInvokeProvider;
invokeProv.Invoke();
}
return;
}
else if (e.Key == Key.Down)
{
bool foundFocused = false;
// loop through the buttons and focus the next one
foreach (var child in ResultsPanel.Children)
{
if (child is SoundButton)
{
if (foundFocused)
{
// we found the last focused button, so focus this one
((SoundButton)child).Focus();
focusedButton = ((SoundButton)child);
break;
}
if (((SoundButton)child).IsFocused)
{
// we found the focused button! focus the next one
foundFocused = true;
}
}
}
return;
}
else if (e.Key == Key.Up)
{
SoundButton previousButton = null;
// loop through the buttons and focus the previous one
foreach (var child in ResultsPanel.Children)
{
if (child is SoundButton)
{
if (((SoundButton)child).IsFocused)
{
// focus the previous one!
if (previousButton != null)
{
previousButton.Focus();
focusedButton = previousButton;
break;
}
}
previousButton = (SoundButton)child;
}
}
return;
}
else if (e.Key == Key.Enter)
{
// play the sound!
foreach (var child in ResultsPanel.Children)
{
if (child is SoundButton && ((SoundButton)child).IsFocused)
{
ButtonAutomationPeer peer = new ButtonAutomationPeer((SoundButton)child);
IInvokeProvider invokeProv = peer.GetPattern(PatternInterface.Invoke) as IInvokeProvider;
invokeProv.Invoke();
}
}
return;
}
else
{
return;
}
Query.Text = searchString;
Query.CaretIndex = Query.Text.Length;
Search.IsOpen = true;
// get rid of any previous buttons / do reverse iteration to prevent weird bugs
for (int i = ResultsPanel.Children.Count - 1; i >= 0; --i)
{
if (ResultsPanel.Children[i] is SoundButton)
{
ResultsPanel.Children.Remove((SoundButton)ResultsPanel.Children[i]);
}
}
// perform search
if (searchString != "")
{
foreach (KeyValuePair <string, string> entry in sounds)
{
if (entry.Key.ToLower().Contains(searchString.ToLower()))
{
SoundButton button = new SoundButton(true);
button.SetFile(entry.Value, entry.Key, false);
ResultsPanel.Children.Add(button);
}
}
// if we've added at least one button, focus the first one
if (ResultsPanel.Children.Count > 0)
{
((SoundButton)ResultsPanel.Children[0]).Focus();
focusedButton = ((SoundButton)ResultsPanel.Children[0]);
}
}
}