// enforce thread local access
/// <summary>
/// Find the next view to take focus in root's descendants, starting from the view
/// that currently is focused.
/// </summary>
/// <remarks>
/// Find the next view to take focus in root's descendants, starting from the view
/// that currently is focused.
/// </remarks>
/// <param name="root">Contains focused</param>
/// <param name="focused">Has focus now.</param>
/// <param name="direction">Direction to look.</param>
/// <returns>The next focusable view, or null if none exists.</returns>
public android.view.View findNextFocus(android.view.ViewGroup root, android.view.View
focused, int direction)
{
if (focused != null)
{
// check for user specified next focus
android.view.View userSetNextFocus = focused.findUserSetNextFocus(root, direction
);
if (userSetNextFocus != null && userSetNextFocus.isFocusable() && (!userSetNextFocus
.isInTouchMode() || userSetNextFocus.isFocusableInTouchMode()))
{
return(userSetNextFocus);
}
// fill in interesting rect from focused
focused.getFocusedRect(mFocusedRect);
root.offsetDescendantRectToMyCoords(focused, mFocusedRect);
}
else
{
switch (direction)
{
case android.view.View.FOCUS_RIGHT:
case android.view.View.FOCUS_DOWN:
case android.view.View.FOCUS_FORWARD:
{
// make up a rect at top left or bottom right of root
int rootTop = root.getScrollY();
int rootLeft = root.getScrollX();
mFocusedRect.set(rootLeft, rootTop, rootLeft, rootTop);
break;
}
case android.view.View.FOCUS_LEFT:
case android.view.View.FOCUS_UP:
case android.view.View.FOCUS_BACKWARD:
{
int rootBottom = root.getScrollY() + root.getHeight();
int rootRight = root.getScrollX() + root.getWidth();
mFocusedRect.set(rootRight, rootBottom, rootRight, rootBottom);
break;
}
}
}
return(findNextFocus(root, focused, mFocusedRect, direction));
}
