/// <summary>
/// Handles view animations when the keyboard is shown.
/// </summary>
/// <param name="e">The keyboard arguments for the event.</param>
public override void AnimateOnShown(UIKeyboardEventArgs e)
{
bool shouldHideTopSection;
int translateY = this.CalculateVerticalTranslation(e.Notification, out shouldHideTopSection);
if (translateY < 0)
{
Action topSectionAnimation;
if (shouldHideTopSection)
{
topSectionAnimation = () => this.topSection.Hide();
}
else
{
topSectionAnimation = () => ViewAnimation.AnimateMoveVertical(e.AnimationDuration, translateY, this.topSection.Views);
}
ViewAnimation.AnimateMoveVertical(
e.AnimationDuration,
translateY,
topSectionAnimation,
this.bottomSection.Views);
shouldAnimateOnHide = true;
}
else
{
shouldAnimateOnHide = false;
}
}
private void HideRefreshIndicator()
{
if (this.isRefreshIndicatorShown)
{
ViewAnimation.ResetTransform(this.refreshIndicator);
this.ResetRefreshIndicator();
}
}
private Action GetTopViewKeyboardHiddenAnimationCallback(double duration)
{
if (this.topSection.IsHidden)
{
return(() => ViewAnimation.AnimateFadeIn(this.topSection.Views, duration));
}
return(() => ViewAnimation.ResetTransform(this.topSection.Views));
}
/// <summary>
/// Handles view animations when the keyboard is hidden.
/// </summary>
/// <param name="e">The keyboard arguments for the event.</param>
public override void AnimateOnHidden(UIKeyboardEventArgs e)
{
if (shouldAnimateOnHide)
{
UIView.Animate(e.AnimationDuration, () => ViewAnimation.ResetTransform(this.view));
}
shouldAnimateOnHide = false;
}
/// <summary>
/// Called when transition out animation is completed.
/// </summary>
public void TransitionOutCompleted(ViewAnimation animation)
{
if (animation.Target != null && DeactiveViews)
{
if (animation.Target != ActiveView)
{
animation.Target.Deactivate();
}
}
}
private void ShowRefreshIndicator()
{
if (!this.isRefreshIndicatorShown)
{
ViewAnimation.AnimateMoveVertical(
Constants.RefreshIndicatorAnimationDuration,
Constants.RefreshIndicatorHeight,
this.refreshIndicator);
this.isRefreshIndicatorShown = true;
}
}
/// <summary>
/// Handles view animations when the keyboard is shown.
/// </summary>
/// <param name="e">The keyboard arguments for the event.</param>
public override void AnimateOnShown(UIKeyboardEventArgs e)
{
NSValue keyboardFrame = (NSValue)e.Notification.UserInfo.ObjectForKey(UIKeyboard.FrameEndUserInfoKey);
nfloat maximumViewBottom = keyboardFrame.CGRectValue.Top - this.bottomPadding;
if (this.view.Frame.Bottom > maximumViewBottom)
{
nfloat amountToTranslate = this.view.Frame.Bottom - maximumViewBottom;
ViewAnimation.AnimateMoveVertical(e.AnimationDuration, -amountToTranslate, () => this.view.Superview.LayoutIfNeeded(), this.view);
this.shouldAnimateOnHide = true;
}
}
/// <summary>
/// Handles view animations when the keyboard is hidden.
/// </summary>
/// <param name="e">The keyboard arguments for the event.</param>
public override void AnimateOnHidden(UIKeyboardEventArgs e)
{
if (shouldAnimateOnHide)
{
UIView.Animate(
e.AnimationDuration,
() =>
{
Action topSectionAnimation = this.GetTopViewKeyboardHiddenAnimationCallback(e.AnimationDuration);
topSectionAnimation();
ViewAnimation.ResetTransform(this.bottomSection.Views);
});
}
shouldAnimateOnHide = false;
}
/// <summary>
/// Initializes the view switcher.
/// </summary>
public override void Initialize()
{
base.Initialize();
if (!String.IsNullOrEmpty(TransitionIn))
{
TransitionInAnimation = LayoutRoot.Find <ViewAnimation>(TransitionIn);
}
if (!String.IsNullOrEmpty(TransitionOut))
{
TransitionOutAnimation = LayoutRoot.Find <ViewAnimation>(TransitionOut);
if (TransitionOutAnimation != null)
{
TransitionOutAnimation.AnimationCompleted.AddEntry(new ViewActionEntry
{
ParentView = this,
SourceView = TransitionOutAnimation,
ViewActionFieldName = "AnimationCompleted",
ViewActionHandlerName = "TransitionOutCompleted"
});
}
}
if (!String.IsNullOrEmpty(TransitionInReverse))
{
TransitionInReverseAnimation = LayoutRoot.Find <ViewAnimation>(TransitionInReverse);
}
if (!String.IsNullOrEmpty(TransitionOutReverse))
{
TransitionOutReverseAnimation = LayoutRoot.Find <ViewAnimation>(TransitionOutReverse);
if (TransitionOutReverseAnimation != null)
{
TransitionOutReverseAnimation.AnimationCompleted.AddEntry(new ViewActionEntry
{
ParentView = this,
SourceView = TransitionOutReverseAnimation,
ViewActionFieldName = "AnimationCompleted",
ViewActionHandlerName = "TransitionOutCompleted"
});
}
}
if (!StartView.IsSet)
{
if (SwitchToDefault)
{
if (ChildCount > 0)
{
SwitchTo(0, false);
}
}
else
{
// deactive all views
if (DeactiveViews)
{
this.ForEachChild <View>(x => x.Deactivate(), false);
}
}
}
else
{
SwitchTo(StartView, false);
}
}
