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First step for KeyTipAdorner and KeyTipService refactoring
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Some special cases from OnPreviewKeyDown in KeyTipAdorner are not
implemented yet
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@batzen
batzen committed Jan 28, 2016
1 parent e26b0ba commit fc0d97e
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Showing 3 changed files with 62 additions and 230 deletions.
241 changes: 35 additions & 206 deletions Fluent.Ribbon/Adorners/KeyTipAdorner.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -46,24 +46,15 @@ internal class KeyTipAdorner : Adorner
private readonly KeyTipAdorner parentAdorner;
KeyTipAdorner childAdorner;

// Focused element
private IInputElement focusedElement;

private readonly Visibility[] backupedVisibilities;
private readonly UIElement keyTipElementContainer;

// Is this adorner attached to the adorned element?
private bool attached;
private HwndSource attachedHwndSource;

// Current entered chars
string enteredKeys = "";

// Designate that this adorner is terminated
private bool terminated;

private DispatcherTimer timerFocusTracking;

private AdornerLayer adornerLayer;

#endregion
Expand Down Expand Up @@ -245,94 +236,16 @@ public void Attach()
return;
}

// Focus current adorned element
// Keyboard.Focus(adornedElement);
this.focusedElement = Keyboard.FocusedElement;

if (this.focusedElement != null)
{
this.Log("Focus Attached to {0}", this.focusedElement);
this.focusedElement.LostKeyboardFocus += this.OnFocusLost;
this.focusedElement.PreviewKeyDown += this.OnPreviewKeyDown;
this.focusedElement.PreviewTextInput += this.OnFocusedElementPreviewTextInput;
}
else
{
this.Log("[!] Focus Setup Failed");
}

GetTopLevelElement(this.oneOfAssociatedElements).PreviewMouseDown += this.OnInputActionOccured;

// Clears previous user input
this.enteredKeys = "";
this.FilterKeyTips(this.enteredKeys);
this.FilterKeyTips(string.Empty);

// Show this adorner
this.adornerLayer.Add(this);

// Hookup window activation
this.attachedHwndSource = ((HwndSource)PresentationSource.FromVisual(this.oneOfAssociatedElements));
if (this.attachedHwndSource != null)
{
this.attachedHwndSource.AddHook(this.WindowProc);
}

// Start timer to track focus changing
if (this.timerFocusTracking == null)
{
this.timerFocusTracking = new DispatcherTimer(DispatcherPriority.ApplicationIdle, Dispatcher.CurrentDispatcher)
{
Interval = TimeSpan.FromMilliseconds(50)
};
this.timerFocusTracking.Tick += this.OnTimerFocusTrackingTick;
}

this.timerFocusTracking.Start();

this.attached = true;

this.Log("Attach end");
}

private void OnTimerFocusTrackingTick(object sender, EventArgs e)
{
if (this.focusedElement == Keyboard.FocusedElement)
{
return;
}

this.Log("Focus is changed, but focus lost is not occured");

if (this.focusedElement != null)
{
this.focusedElement.LostKeyboardFocus -= this.OnFocusLost;
this.focusedElement.PreviewKeyDown -= this.OnPreviewKeyDown;
this.focusedElement.PreviewTextInput -= this.OnFocusedElementPreviewTextInput;
}

this.focusedElement = Keyboard.FocusedElement;

if (this.focusedElement != null)
{
this.focusedElement.LostKeyboardFocus += this.OnFocusLost;
this.focusedElement.PreviewKeyDown += this.OnPreviewKeyDown;
this.focusedElement.PreviewTextInput += this.OnFocusedElementPreviewTextInput;
}
}

// Window's messages hook up
private IntPtr WindowProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
// Check whether window is deactivated (wParam == 0)
if ((msg == 6) && (wParam == IntPtr.Zero) && (this.attached))
{
this.Log("The host window is deactivated, keytips will be terminated");
this.Terminate();
}

return IntPtr.Zero;
}

private void OnDelayAttach(object sender, EventArgs args)
{
this.Log("Delay attach (control loaded)");
Expand All @@ -357,34 +270,13 @@ public void Detach()

this.Log("Detach Begin");

// Remove window hookup
if ((this.attachedHwndSource != null) && (!this.attachedHwndSource.IsDisposed))
{
// Crashes in a few time if invoke immediately ???
this.AdornedElement.Dispatcher.BeginInvoke((System.Threading.ThreadStart)(() => this.attachedHwndSource.RemoveHook(this.WindowProc)));
}

// Maybe adorner awaiting attaching, cancel it
this.oneOfAssociatedElements.Loaded -= this.OnDelayAttach;

if (this.focusedElement != null)
{
this.focusedElement.LostKeyboardFocus -= this.OnFocusLost;
this.focusedElement.PreviewKeyDown -= this.OnPreviewKeyDown;
this.focusedElement.PreviewTextInput -= this.OnFocusedElementPreviewTextInput;
this.focusedElement = null;
}

GetTopLevelElement(this.oneOfAssociatedElements).PreviewMouseDown -= this.OnInputActionOccured;

// Show this adorner
this.adornerLayer.Remove(this);
// Clears previous user input
this.enteredKeys = "";
this.attached = false;

// Stop timer to track focus changing
this.timerFocusTracking.Stop();
this.attached = false;

this.Log("Detach End");
}
Expand Down Expand Up @@ -429,95 +321,33 @@ public void Terminate()

#region Event Handlers

[SuppressMessage("Microsoft.Maintainability", "CA1502")]
private void OnPreviewKeyDown(object sender, KeyEventArgs e)
{
this.Log("Key Down {0} ({1})", e.Key, e.OriginalSource);

if (e.IsRepeat
|| this.Visibility == Visibility.Hidden)
{
return;
}

if ((!(this.AdornedElement is ContextMenu) && (!(this.AdornedElement is MenuItem))) &&
((e.Key == Key.Left) || (e.Key == Key.Right) || (e.Key == Key.Up) || (e.Key == Key.Down) ||
(e.Key == Key.Enter) || (e.Key == Key.Tab)))
{
this.Visibility = Visibility.Hidden;
}
else if (e.Key == Key.Escape)
{
this.Back();
e.Handled = true;
}
}

private void OnFocusedElementPreviewTextInput(object sender, TextCompositionEventArgs e)
{
var keyToSearch = this.enteredKeys + e.Text;

if (this.IsElementsStartWith(keyToSearch))
{
this.enteredKeys += e.Text;

var element = this.TryGetElement(this.enteredKeys);

if (element != null)
{
this.Forward(element);
}
else
{
this.FilterKeyTips(this.enteredKeys);
}

e.Handled = true;
}
else
{
System.Media.SystemSounds.Beep.Play();
}
}

private void OnInputActionOccured(object sender, RoutedEventArgs e)
{
if (!this.attached)
{
return;
}

this.Log("Input Action, Keystips will be terminated");
this.Terminate();
}

private void OnFocusLost(object sender, RoutedEventArgs e)
{
if (!this.attached)
{
return;
}

this.Log("Focus Lost");

var previousFocusedElementElement = this.focusedElement;
this.focusedElement.LostKeyboardFocus -= this.OnFocusLost;
this.focusedElement.PreviewKeyDown -= this.OnPreviewKeyDown;
this.focusedElement.PreviewTextInput -= this.OnFocusedElementPreviewTextInput;
this.focusedElement = Keyboard.FocusedElement;

if (this.focusedElement != null)
{
this.Log("Focus Changed from {0} to {1}", previousFocusedElementElement, this.focusedElement);
this.focusedElement.LostKeyboardFocus += this.OnFocusLost;
this.focusedElement.PreviewKeyDown += this.OnPreviewKeyDown;
this.focusedElement.PreviewTextInput += this.OnFocusedElementPreviewTextInput;
}
else
{
this.Log("Focus Not Restored");
}
}
//[SuppressMessage("Microsoft.Maintainability", "CA1502")]
//private void OnPreviewKeyDown(object sender, KeyEventArgs e)
//{
// this.Log("Key Down {0} ({1})", e.Key, e.OriginalSource);

// if (e.IsRepeat
// || this.Visibility == Visibility.Hidden)
// {
// return;
// }

// if ((this.AdornedElement is ContextMenu == false && this.AdornedElement is MenuItem == false)
// && ((e.Key == Key.Left)
// || (e.Key == Key.Right)
// || (e.Key == Key.Up)
// || (e.Key == Key.Down)
// || (e.Key == Key.Enter)
// || (e.Key == Key.Tab)))
// {
// this.Visibility = Visibility.Hidden;
// }
// else if (e.Key == Key.Escape)
// {
// this.Back();
// e.Handled = true;
// }
//}

#endregion

Expand Down Expand Up @@ -678,11 +508,10 @@ private UIElement TryGetElement(string keys)
}

/// <summary>
/// Is one of the elements starts with the given chars
/// Determines if an of the keytips contained in this adorner start with <paramref name="keys"/>
/// </summary>
/// <param name="keys"></param>
/// <returns></returns>
public bool IsElementsStartWith(string keys)
/// <returns><c>true</c> if any keytip start with <paramref name="keys"/>. Otherwise <c>false</c>.</returns>
public bool ContainsKeyTipStartingWith(string keys)
{
foreach (var keyTip in this.keyTips.Where(x => x.IsEnabled))
{
Expand All @@ -698,7 +527,7 @@ public bool IsElementsStartWith(string keys)
}

// Hide / unhide keytips relative matching to entered keys
internal void FilterKeyTips(string currentlyEnteredKeys)
internal void FilterKeyTips(string keys)
{
this.Log("FilterKeyTips");

Expand All @@ -713,13 +542,13 @@ internal void FilterKeyTips(string currentlyEnteredKeys)
{
var content = (string)this.keyTips[i].Content;

if (string.IsNullOrEmpty(currentlyEnteredKeys))
if (string.IsNullOrEmpty(keys))
{
this.keyTips[i].Visibility = this.backupedVisibilities[i];
}
else
{
this.keyTips[i].Visibility = content.StartsWith(currentlyEnteredKeys, StringComparison.CurrentCultureIgnoreCase)
this.keyTips[i].Visibility = content.StartsWith(keys, StringComparison.CurrentCultureIgnoreCase)
? this.backupedVisibilities[i]
: Visibility.Collapsed;
}
Expand Down
3 changes: 2 additions & 1 deletion Fluent.Ribbon/Metro/Native/Constants.cs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ internal static class Constants
{
public const int MONITOR_DEFAULTTONEAREST = 0x00000002;

public const int WM_ACTIVATE = 0x0006;
public const int WM_NCCALCSIZE = 0x83;
public const int WM_NCPAINT = 0x85;
public const int WM_NCACTIVATE = 0x86;
Expand All @@ -17,7 +18,7 @@ internal static class Constants

public const long WS_MAXIMIZE = 0x01000000;

public const int GCLP_HBRBACKGROUND = -0x0A;
public const int GCLP_HBRBACKGROUND = -0x0A;

public const int HTLEFT = 0x0A;
public const int HTRIGHT = 0x0B;
Expand Down
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