/// <summary>Checks an arbitrary input event.</summary>
/// <remarks>Checks an arbitrary input event.</remarks>
/// <param name="event">The event.</param>
/// <param name="nestingLevel">
/// The nesting level: 0 if called from the base class,
/// or 1 from a subclass. If the event was already checked by this consistency verifier
/// at a higher nesting level, it will not be checked again. Used to handle the situation
/// where a subclass dispatching method delegates to its superclass's dispatching method
/// and both dispatching methods call into the consistency verifier.
/// </param>
public void onInputEvent(android.view.InputEvent @event, int nestingLevel)
{
if (@event is android.view.KeyEvent)
{
android.view.KeyEvent keyEvent = (android.view.KeyEvent)@event;
onKeyEvent(keyEvent, nestingLevel);
}
else
{
android.view.MotionEvent motionEvent = (android.view.MotionEvent)@event;
if (motionEvent.isTouchEvent())
{
onTouchEvent(motionEvent, nestingLevel);
}
else
{
if ((motionEvent.getSource() & android.view.InputDevice.SOURCE_CLASS_TRACKBALL) !=
0)
{
onTrackballEvent(motionEvent, nestingLevel);
}
else
{
onGenericMotionEvent(motionEvent, nestingLevel);
}
}
}
}
public virtual bool onGenericMotionEvent(android.widget.TextView widget, android.text.Spannable
text, android.view.MotionEvent @event)
{
if ((@event.getSource() & android.view.InputDevice.SOURCE_CLASS_POINTER) != 0)
{
switch (@event.getAction())
{
case android.view.MotionEvent.ACTION_SCROLL:
{
float vscroll;
float hscroll;
if ((@event.getMetaState() & android.view.KeyEvent.META_SHIFT_ON) != 0)
{
vscroll = 0;
hscroll = @event.getAxisValue(android.view.MotionEvent.AXIS_VSCROLL);
}
else
{
vscroll = [email protected](android.view.MotionEvent.AXIS_VSCROLL);
hscroll = @event.getAxisValue(android.view.MotionEvent.AXIS_HSCROLL);
}
bool handled = false;
if (hscroll < 0)
{
handled |= scrollLeft(widget, text, (int)System.Math.Ceiling(-hscroll));
}
else
{
if (hscroll > 0)
{
handled |= scrollRight(widget, text, (int)System.Math.Ceiling(hscroll));
}
}
if (vscroll < 0)
{
handled |= scrollUp(widget, text, (int)System.Math.Ceiling(-vscroll));
}
else
{
if (vscroll > 0)
{
handled |= scrollDown(widget, text, (int)System.Math.Ceiling(vscroll));
}
}
return handled;
}
}
}
return false;
}
/// <summary>
/// Notifies the verifier that a given event was unhandled and the rest of the
/// trace for the event should be ignored.
/// </summary>
/// <remarks>
/// Notifies the verifier that a given event was unhandled and the rest of the
/// trace for the event should be ignored.
/// This method should only be called if the event was previously checked by
/// the consistency verifier using
/// <see cref="onInputEvent(InputEvent, int)">onInputEvent(InputEvent, int)</see>
/// and other methods.
/// </remarks>
/// <param name="event">The event.</param>
/// <param name="nestingLevel">
/// The nesting level: 0 if called from the base class,
/// or 1 from a subclass. If the event was already checked by this consistency verifier
/// at a higher nesting level, it will not be checked again. Used to handle the situation
/// where a subclass dispatching method delegates to its superclass's dispatching method
/// and both dispatching methods call into the consistency verifier.
/// </param>
public void onUnhandledEvent(android.view.InputEvent @event, int nestingLevel)
{
if (nestingLevel != mLastNestingLevel)
{
return;
}
if (mRecentEventsUnhandled != null)
{
mRecentEventsUnhandled[mMostRecentEventIndex] = true;
}
if (@event is android.view.KeyEvent)
{
android.view.KeyEvent keyEvent = (android.view.KeyEvent)@event;
int deviceId = keyEvent.getDeviceId();
int source = keyEvent.getSource();
int keyCode = keyEvent.getKeyCode();
android.view.InputEventConsistencyVerifier.KeyState state = findKeyState(deviceId
, source, keyCode, false);
if (state != null)
{
state.unhandled = true;
}
}
else
{
android.view.MotionEvent motionEvent = (android.view.MotionEvent)@event;
if (motionEvent.isTouchEvent())
{
mTouchEventStreamUnhandled = true;
}
else
{
if ((motionEvent.getSource() & android.view.InputDevice.SOURCE_CLASS_TRACKBALL) !=
0)
{
if (mTrackballDown)
{
mTrackballUnhandled = true;
}
}
}
}
}
/// <summary>Checks a generic motion event.</summary>
/// <remarks>Checks a generic motion event.</remarks>
/// <param name="event">The event.</param>
/// <param name="nestingLevel">
/// The nesting level: 0 if called from the base class,
/// or 1 from a subclass. If the event was already checked by this consistency verifier
/// at a higher nesting level, it will not be checked again. Used to handle the situation
/// where a subclass dispatching method delegates to its superclass's dispatching method
/// and both dispatching methods call into the consistency verifier.
/// </param>
public void onGenericMotionEvent(android.view.MotionEvent @event, int nestingLevel
)
{
if (!startEvent(@event, nestingLevel, EVENT_TYPE_GENERIC_MOTION))
{
return;
}
try
{
ensureMetaStateIsNormalized(@event.getMetaState());
int action = @event.getAction();
int source = @event.getSource();
if ((source & android.view.InputDevice.SOURCE_CLASS_POINTER) != 0)
{
switch (action)
{
case android.view.MotionEvent.ACTION_HOVER_ENTER:
{
ensurePointerCountIsOneForThisAction(@event);
mHoverEntered = true;
break;
}
case android.view.MotionEvent.ACTION_HOVER_MOVE:
{
ensurePointerCountIsOneForThisAction(@event);
break;
}
case android.view.MotionEvent.ACTION_HOVER_EXIT:
{
ensurePointerCountIsOneForThisAction(@event);
if (!mHoverEntered)
{
problem("ACTION_HOVER_EXIT without prior ACTION_HOVER_ENTER");
}
mHoverEntered = false;
break;
}
case android.view.MotionEvent.ACTION_SCROLL:
{
ensureHistorySizeIsZeroForThisAction(@event);
ensurePointerCountIsOneForThisAction(@event);
break;
}
default:
{
problem("Invalid action for generic pointer event.");
break;
}
}
}
else
{
if ((source & android.view.InputDevice.SOURCE_CLASS_JOYSTICK) != 0)
{
switch (action)
{
case android.view.MotionEvent.ACTION_MOVE:
{
ensurePointerCountIsOneForThisAction(@event);
break;
}
default:
{
problem("Invalid action for generic joystick event.");
break;
}
}
}
}
}
finally
{
finishEvent();
}
}
/// <summary>Checks a touch event.</summary>
/// <remarks>Checks a touch event.</remarks>
/// <param name="event">The event.</param>
/// <param name="nestingLevel">
/// The nesting level: 0 if called from the base class,
/// or 1 from a subclass. If the event was already checked by this consistency verifier
/// at a higher nesting level, it will not be checked again. Used to handle the situation
/// where a subclass dispatching method delegates to its superclass's dispatching method
/// and both dispatching methods call into the consistency verifier.
/// </param>
public void onTouchEvent(android.view.MotionEvent @event, int nestingLevel)
{
if (!startEvent(@event, nestingLevel, EVENT_TYPE_TOUCH))
{
return;
}
int action = @event.getAction();
bool newStream = action == android.view.MotionEvent.ACTION_DOWN || action == android.view.MotionEvent
.ACTION_CANCEL;
if (newStream && (mTouchEventStreamIsTainted || mTouchEventStreamUnhandled))
{
mTouchEventStreamIsTainted = false;
mTouchEventStreamUnhandled = false;
mTouchEventStreamPointers = 0;
}
if (mTouchEventStreamIsTainted)
{
@event.setTainted(true);
}
try
{
ensureMetaStateIsNormalized(@event.getMetaState());
int deviceId = @event.getDeviceId();
int source = @event.getSource();
if (!newStream && mTouchEventStreamDeviceId != -1 && (mTouchEventStreamDeviceId !=
deviceId || mTouchEventStreamSource != source))
{
problem("Touch event stream contains events from multiple sources: " + "previous device id "
+ mTouchEventStreamDeviceId + ", previous source " + Sharpen.Util.IntToHexString
(mTouchEventStreamSource) + ", new device id " + deviceId + ", new source " + Sharpen.Util.IntToHexString
(source));
}
mTouchEventStreamDeviceId = deviceId;
mTouchEventStreamSource = source;
int pointerCount = @event.getPointerCount();
if ((source & android.view.InputDevice.SOURCE_CLASS_POINTER) != 0)
{
switch (action)
{
case android.view.MotionEvent.ACTION_DOWN:
{
if (mTouchEventStreamPointers != 0)
{
problem("ACTION_DOWN but pointers are already down. " + "Probably missing ACTION_UP from previous gesture."
);
}
ensureHistorySizeIsZeroForThisAction(@event);
ensurePointerCountIsOneForThisAction(@event);
mTouchEventStreamPointers = 1 << @event.getPointerId(0);
break;
}
case android.view.MotionEvent.ACTION_UP:
{
ensureHistorySizeIsZeroForThisAction(@event);
ensurePointerCountIsOneForThisAction(@event);
mTouchEventStreamPointers = 0;
mTouchEventStreamIsTainted = false;
break;
}
case android.view.MotionEvent.ACTION_MOVE:
{
int expectedPointerCount = Sharpen.Util.IntGetBitCount(mTouchEventStreamPointers);
if (pointerCount != expectedPointerCount)
{
problem("ACTION_MOVE contained " + pointerCount + " pointers but there are currently "
+ expectedPointerCount + " pointers down.");
mTouchEventStreamIsTainted = true;
}
break;
}
case android.view.MotionEvent.ACTION_CANCEL:
{
mTouchEventStreamPointers = 0;
mTouchEventStreamIsTainted = false;
break;
}
case android.view.MotionEvent.ACTION_OUTSIDE:
{
if (mTouchEventStreamPointers != 0)
{
problem("ACTION_OUTSIDE but pointers are still down.");
}
ensureHistorySizeIsZeroForThisAction(@event);
ensurePointerCountIsOneForThisAction(@event);
mTouchEventStreamIsTainted = false;
break;
}
default:
{
int actionMasked = @event.getActionMasked();
int actionIndex = @event.getActionIndex();
if (actionMasked == android.view.MotionEvent.ACTION_POINTER_DOWN)
{
if (mTouchEventStreamPointers == 0)
{
problem("ACTION_POINTER_DOWN but no other pointers were down.");
mTouchEventStreamIsTainted = true;
}
if (actionIndex < 0 || actionIndex >= pointerCount)
{
problem("ACTION_POINTER_DOWN index is " + actionIndex + " but the pointer count is "
+ pointerCount + ".");
mTouchEventStreamIsTainted = true;
}
else
{
int id = @event.getPointerId(actionIndex);
int idBit = 1 << id;
if ((mTouchEventStreamPointers & idBit) != 0)
{
problem("ACTION_POINTER_DOWN specified pointer id " + id + " which is already down."
);
mTouchEventStreamIsTainted = true;
}
else
{
mTouchEventStreamPointers |= idBit;
}
}
ensureHistorySizeIsZeroForThisAction(@event);
}
else
{
if (actionMasked == android.view.MotionEvent.ACTION_POINTER_UP)
{
if (actionIndex < 0 || actionIndex >= pointerCount)
{
problem("ACTION_POINTER_UP index is " + actionIndex + " but the pointer count is "
+ pointerCount + ".");
mTouchEventStreamIsTainted = true;
}
else
{
int id = @event.getPointerId(actionIndex);
int idBit = 1 << id;
if ((mTouchEventStreamPointers & idBit) == 0)
{
problem("ACTION_POINTER_UP specified pointer id " + id + " which is not currently down."
);
mTouchEventStreamIsTainted = true;
}
else
{
mTouchEventStreamPointers &= ~idBit;
}
}
ensureHistorySizeIsZeroForThisAction(@event);
}
else
{
problem("Invalid action " + android.view.MotionEvent.actionToString(action) + " for touch event."
);
}
}
break;
}
}
}
else
{
problem("Source was not SOURCE_CLASS_POINTER.");
}
}
finally
{
finishEvent();
}
}
/// <summary>Checks a trackball event.</summary>
/// <remarks>Checks a trackball event.</remarks>
/// <param name="event">The event.</param>
/// <param name="nestingLevel">
/// The nesting level: 0 if called from the base class,
/// or 1 from a subclass. If the event was already checked by this consistency verifier
/// at a higher nesting level, it will not be checked again. Used to handle the situation
/// where a subclass dispatching method delegates to its superclass's dispatching method
/// and both dispatching methods call into the consistency verifier.
/// </param>
public void onTrackballEvent(android.view.MotionEvent @event, int nestingLevel)
{
if (!startEvent(@event, nestingLevel, EVENT_TYPE_TRACKBALL))
{
return;
}
try
{
ensureMetaStateIsNormalized(@event.getMetaState());
int action = @event.getAction();
int source = @event.getSource();
if ((source & android.view.InputDevice.SOURCE_CLASS_TRACKBALL) != 0)
{
switch (action)
{
case android.view.MotionEvent.ACTION_DOWN:
{
if (mTrackballDown && !mTrackballUnhandled)
{
problem("ACTION_DOWN but trackball is already down.");
}
else
{
mTrackballDown = true;
mTrackballUnhandled = false;
}
ensureHistorySizeIsZeroForThisAction(@event);
ensurePointerCountIsOneForThisAction(@event);
break;
}
case android.view.MotionEvent.ACTION_UP:
{
if (!mTrackballDown)
{
problem("ACTION_UP but trackball is not down.");
}
else
{
mTrackballDown = false;
mTrackballUnhandled = false;
}
ensureHistorySizeIsZeroForThisAction(@event);
ensurePointerCountIsOneForThisAction(@event);
break;
}
case android.view.MotionEvent.ACTION_MOVE:
{
ensurePointerCountIsOneForThisAction(@event);
break;
}
default:
{
problem("Invalid action " + android.view.MotionEvent.actionToString(action) + " for trackball event."
);
break;
}
}
if (mTrackballDown && @event.getPressure() <= 0)
{
problem("Trackball is down but pressure is not greater than 0.");
}
else
{
if (!mTrackballDown && @event.getPressure() != 0)
{
problem("Trackball is up but pressure is not equal to 0.");
}
}
}
else
{
problem("Source was not SOURCE_CLASS_TRACKBALL.");
}
}
finally
{
finishEvent();
}
}