private bool Increment(UIAccessibilityCustomAction customAction)
{
int n = Int32.Parse(MainPage.counter.Text);
n++;
Debug.WriteLine("PIPPO: clicked increment");
MainPage.counter.Text = "" + (n);
return(true);
}
private bool Decrement(UIAccessibilityCustomAction customAction)
{
int n = Int32.Parse(MainPage.counter.Text);
if (n <= 0)
{
return(false);
}
Debug.WriteLine("PIPPO: clicked decrement");
n--;
MainPage.counter.Text = "" + (n);
return(true);
}
public void initAccessibility(MainPage page)
{
mainpage = page;
var iospage = page.GetRenderer().ViewController;
UIAccessibilityCustomAction up = new UIAccessibilityCustomAction("Increment", actionHandler: Increment);
UIAccessibilityCustomAction down = new UIAccessibilityCustomAction("Decrement", actionHandler: Decrement);
iospage.AccessibilityCustomActions = new UIAccessibilityCustomAction[2] {
up, down
};
Debug.WriteLine($"PIPPO: DS, counter = {MainPage.counter.Text}");
}
private void updateAccessibilityActionToExpandGroup()
{
if (Item.VisualizationIntent == LogItemVisualizationIntent.GroupItem ||
Item.VisualizationIntent == LogItemVisualizationIntent.SingleItem)
{
AccessibilityCustomActions = null;
return;
}
var actionName = Item.VisualizationIntent == LogItemVisualizationIntent.CollapsedGroupHeader
? Resources.ExpandTimeEntryGroup
: Resources.CollapseTimeEntryGroup;
var action = new UIAccessibilityCustomAction(actionName, (x) =>
{
accessibilityToggleGroupSubject.OnNext(Unit.Default);
return(true);
});
AccessibilityCustomActions = new[] { action };
}
private CardView AddCardViewToView(UIView containerView)
{
CardView cardView = new CardView();
cardView.Update(CurrentMatch);
cardView.TranslatesAutoresizingMaskIntoConstraints = false;
_cardView = cardView;
containerView.AddSubview(cardView);
UISwipeGestureRecognizer swipeUpRecognizer = new UISwipeGestureRecognizer(HandleSwipeUp);
swipeUpRecognizer.Direction = UISwipeGestureRecognizerDirection.Up;
cardView.AddGestureRecognizer(swipeUpRecognizer);
UISwipeGestureRecognizer swipeDownRecognizer = new UISwipeGestureRecognizer(HandleSwipeDown);
swipeDownRecognizer.Direction = UISwipeGestureRecognizerDirection.Down;
cardView.AddGestureRecognizer(swipeDownRecognizer);
string sayHelloName = "Say hello".LocalizedString(@"Accessibility action to say hello");
_helloAction = new UIAccessibilityCustomAction(sayHelloName, SayHello);
string sayGoodbyeName = "Say goodbye".LocalizedString("Accessibility action to say goodbye");
_goodbyeAction = new UIAccessibilityCustomAction(sayGoodbyeName, SayGoodbye);
UIView[] elements = NSArray.FromArray <UIView> ((NSArray)cardView.GetAccessibilityElements());
foreach (UIView element in elements)
{
element.AccessibilityCustomActions = new UIAccessibilityCustomAction[] { _helloAction, _goodbyeAction }
}
;
return(cardView);
}
bool SayGoodbye(UIAccessibilityCustomAction customAction)
{
AnimateCardsForHello (false);
return true;
}
bool SayHello(UIAccessibilityCustomAction customAction)
{
AnimateCardsForHello (true);
return true;
}
CardView AddCardViewToView(UIView containerView)
{
CardView cv = new CardView ();
cv.Update (CurrentMatch);
cv.TranslatesAutoresizingMaskIntoConstraints = false;
this.cardView = cv;
containerView.AddSubview (cv);
UISwipeGestureRecognizer swipeUpRecognizer = new UISwipeGestureRecognizer(HandleSwipeUp);
swipeUpRecognizer.Direction = UISwipeGestureRecognizerDirection.Up;
cv.AddGestureRecognizer (swipeUpRecognizer);
UISwipeGestureRecognizer swipeDownRecognizer = new UISwipeGestureRecognizer (HandleSwipeDown);
swipeDownRecognizer.Direction = UISwipeGestureRecognizerDirection.Down;
cv.AddGestureRecognizer (swipeDownRecognizer);
string sayHelloName = "Say hello".LocalizedString (@"Accessibility action to say hello");
helloAction = new UIAccessibilityCustomAction (sayHelloName, SayHello);
string sayGoodbyeName = "Say goodbye".LocalizedString ("Accessibility action to say goodbye");
goodbyeAction = new UIAccessibilityCustomAction (sayGoodbyeName, SayGoodbye);
UIView[] elements = NSArray.FromArray<UIView> ((NSArray)cv.GetAccessibilityElements ());
foreach (UIView element in elements)
element.AccessibilityCustomActions = new UIAccessibilityCustomAction[] { helloAction, goodbyeAction };
return cv;
}
private bool SayGoodbye(UIAccessibilityCustomAction customAction)
{
AnimateCardsForHello(false);
return(true);
}
CardView AddCardViewToView(UIView containerView)
{
CardView cv = new CardView();
cv.Update(CurrentMatch);
cv.TranslatesAutoresizingMaskIntoConstraints = false;
this.cardView = cv;
containerView.AddSubview(cv);
UISwipeGestureRecognizer swipeUpRecognizer = new UISwipeGestureRecognizer(HandleSwipeUp);
swipeUpRecognizer.Direction = UISwipeGestureRecognizerDirection.Up;
cv.AddGestureRecognizer(swipeUpRecognizer);
UISwipeGestureRecognizer swipeDownRecognizer = new UISwipeGestureRecognizer(HandleSwipeDown);
swipeDownRecognizer.Direction = UISwipeGestureRecognizerDirection.Down;
cv.AddGestureRecognizer(swipeDownRecognizer);
string sayHelloName = "Say hello".LocalizedString(@"Accessibility action to say hello");
helloAction = new UIAccessibilityCustomAction(sayHelloName, SayHello);
string sayGoodbyeName = "Say goodbye".LocalizedString("Accessibility action to say goodbye");
goodbyeAction = new UIAccessibilityCustomAction(sayGoodbyeName, SayGoodbye);
UIView[] elements = NSArray.FromArray <UIView> ((NSArray)cv.GetAccessibilityElements());
foreach (UIView element in elements)
{
element.AccessibilityCustomActions = new UIAccessibilityCustomAction[] { helloAction, goodbyeAction }
}
;
return(cv);
}
void HandleSwipeUp(UISwipeGestureRecognizer gestureRecognizer)
{
if (gestureRecognizer.State == UIGestureRecognizerState.Recognized)
{
SayHello(helloAction);
}
}
void HandleSwipeDown(UISwipeGestureRecognizer gestureRecognizer)
{
if (gestureRecognizer.State == UIGestureRecognizerState.Recognized)
{
SayGoodbye(goodbyeAction);
}
}
UIView AddAllMatchesViewExplanatoryViewToContainerView(UIView containerView, List <NSLayoutConstraint> constraints)
{
UIView overlayView = AddOverlayViewToContainerView(containerView);
// Start out hidden
// This view will become visible once all matches have been viewed
overlayView.Alpha = 0f;
UILabel label = StyleUtilities.CreateStandardLabel();
label.Font = StyleUtilities.LargeFont;
label.Text = "Stay tuned for more matches!".LocalizedString("Shown when all matches have been viewed");
overlayView.AddSubview(label);
// Center the overlay view
constraints.Add(NSLayoutConstraint.Create(overlayView, NSLayoutAttribute.CenterX, NSLayoutRelation.Equal, containerView, NSLayoutAttribute.CenterX, 1f, 0f));
constraints.Add(NSLayoutConstraint.Create(overlayView, NSLayoutAttribute.CenterY, NSLayoutRelation.Equal, containerView, NSLayoutAttribute.CenterY, 1f, 0f));
// Position the label in the overlay view
constraints.Add(NSLayoutConstraint.Create(label, NSLayoutAttribute.Top, NSLayoutRelation.Equal, overlayView, NSLayoutAttribute.Top, 1f, StyleUtilities.ContentVerticalMargin));
constraints.Add(NSLayoutConstraint.Create(label, NSLayoutAttribute.Bottom, NSLayoutRelation.Equal, overlayView, NSLayoutAttribute.Bottom, 1f, -1 * StyleUtilities.ContentVerticalMargin));
constraints.Add(NSLayoutConstraint.Create(label, NSLayoutAttribute.Leading, NSLayoutRelation.Equal, overlayView, NSLayoutAttribute.Leading, 1f, StyleUtilities.ContentHorizontalMargin));
constraints.Add(NSLayoutConstraint.Create(label, NSLayoutAttribute.Trailing, NSLayoutRelation.Equal, overlayView, NSLayoutAttribute.Trailing, 1f, -1 * StyleUtilities.ContentHorizontalMargin));
return(overlayView);
}
bool SayHello(UIAccessibilityCustomAction customAction)
{
AnimateCardsForHello(true);
return(true);
}
bool SayGoodbye(UIAccessibilityCustomAction customAction)
{
AnimateCardsForHello(false);
return(true);
}
void AnimateCardsForHello(bool forHello)
{
AnimateCardOffScreenToTop(forHello, () => {
currentMatchIndex++;
Person nextMatch = CurrentMatch;
if (nextMatch != null)
{
// Show the next match's profile in the card
cardView.Update(nextMatch);
// Ensure that the view's layout is up to date before we animate it
View.LayoutIfNeeded();
if (UIAccessibility.IsReduceMotionEnabled)
{
// Fade the card into view
FadeCardIntoView();
}
else
{
// Zoom the new card from a tiny point into full view
ZoomCardIntoView();
}
}
else
{
// Hide the card
cardView.Hidden = true;
// Fade in the "Stay tuned for more matches" blurb
UIView.Animate(FadeAnimationDuration, () => {
swipeInstructionsView.Alpha = 0f;
allMatchesViewedExplanatoryView.Alpha = 1f;
});
}
UIAccessibility.PostNotification(UIAccessibilityPostNotification.LayoutChanged, null);
});
}
void FadeCardIntoView()
{
cardView.Alpha = 0f;
UIView.Animate(FadeAnimationDuration, () => {
cardView.Alpha = 1f;
});
}
void ZoomCardIntoView()
{
cardView.Transform = CGAffineTransform.MakeScale(0f, 0f);
UIView.Animate(ZoomAnimationDuration, () => {
cardView.Transform = CGAffineTransform.MakeIdentity();
});
}
void AnimateCardOffScreenToTop(bool toTop, Action completion)
{
NSLayoutConstraint offScreenConstraint = null;
if (toTop)
{
offScreenConstraint = NSLayoutConstraint.Create(cardView, NSLayoutAttribute.Bottom, NSLayoutRelation.Equal, View, NSLayoutAttribute.Top, 1f, 0f);
}
else
{
offScreenConstraint = NSLayoutConstraint.Create(cardView, NSLayoutAttribute.Top, NSLayoutRelation.Equal, View, NSLayoutAttribute.Bottom, 1f, 0f);
}
View.LayoutIfNeeded();
UIView.Animate(SwipeAnimationDuration, () => {
// Slide the card off screen
View.RemoveConstraints(cardViewVerticalConstraints);
View.AddConstraint(offScreenConstraint);
View.LayoutIfNeeded();
}, () => {
// Bring the card back into view
View.RemoveConstraint(offScreenConstraint);
View.AddConstraints(cardViewVerticalConstraints);
if (completion != null)
{
completion();
}
});
}
UIView AddSwipeInstructionsToContainerView(UIView containerView, List <NSLayoutConstraint> constraints)
{
UIView overlayView = AddOverlayViewToContainerView(containerView);
UILabel swipeInstructionsLabel = StyleUtilities.CreateStandardLabel();
swipeInstructionsLabel.Font = StyleUtilities.LargeFont;
overlayView.AddSubview(swipeInstructionsLabel);
swipeInstructionsLabel.Text = "Swipe ↑ to say \"Hello!\"\nSwipe ↓ to say \"Goodbye...\"".LocalizedString("Instructions for the Matches page");
swipeInstructionsLabel.AccessibilityLabel = "Swipe up to say \"Hello!\"\nSwipe down to say \"Goodbye\"".LocalizedString("Accessibility instructions for the Matches page");
float overlayMargin = StyleUtilities.OverlayMargin;
NSLayoutConstraint topMarginConstraint = NSLayoutConstraint.Create(overlayView, NSLayoutAttribute.Top, NSLayoutRelation.Equal, TopLayoutGuide, NSLayoutAttribute.Bottom, 1f, overlayMargin);
float priority = (int)UILayoutPriority.Required - 1;
topMarginConstraint.Priority = priority;
constraints.Add(topMarginConstraint);
// Position the label inside the overlay view
constraints.Add(NSLayoutConstraint.Create(swipeInstructionsLabel, NSLayoutAttribute.Top, NSLayoutRelation.Equal, overlayView, NSLayoutAttribute.Top, 1f, HelloGoodbyeVerticalMargin));
constraints.Add(NSLayoutConstraint.Create(swipeInstructionsLabel, NSLayoutAttribute.CenterX, NSLayoutRelation.Equal, overlayView, NSLayoutAttribute.CenterX, 1f, 0f));
constraints.Add(NSLayoutConstraint.Create(overlayView, NSLayoutAttribute.Bottom, NSLayoutRelation.Equal, swipeInstructionsLabel, NSLayoutAttribute.Bottom, 1f, HelloGoodbyeVerticalMargin));
// Center the overlay view horizontally
constraints.Add(NSLayoutConstraint.Create(overlayView, NSLayoutAttribute.Left, NSLayoutRelation.Equal, containerView, NSLayoutAttribute.Left, 1f, overlayMargin));
constraints.Add(NSLayoutConstraint.Create(overlayView, NSLayoutAttribute.Right, NSLayoutRelation.Equal, containerView, NSLayoutAttribute.Right, 1f, -overlayMargin));
return(overlayView);
}
UIView AddOverlayViewToContainerView(UIView containerView)
{
UIView overlayView = new UIView {
BackgroundColor = StyleUtilities.OverlayColor,
TranslatesAutoresizingMaskIntoConstraints = false,
};
overlayView.Layer.CornerRadius = StyleUtilities.OverlayCornerRadius;
containerView.AddSubview(overlayView);
return(overlayView);
}
}
