private void OnContactSelected(object sender, ItemClickEventArgs e)
{
Contact contact = e.ClickedItem as Contact;
if (contact != null)
{
rootframe.Navigate(typeof(ContactDetailPage), contact);
VisualStateHelper.SwitchVisualState(this, VisualStateGroup, "state_FrameZero", "state_320");
}
}
private void RootHost_BackRequested(object sender, BackRequestedEventArgs e)
{
if (VisualStateHelper.SwitchVisualState(this, VisualStateGroup, "state_320", "state_FrameZero"))
{
return;
}
if (rootframe.CanGoBack)
{
e.Handled = true;
rootframe.GoBack();
}
}
private static void VerifyTabWidthVisualStates(IList <object> items, bool isCompact)
{
foreach (var item in items)
{
var tabItem = item as TabViewItem;
if (tabItem.IsSelected || !isCompact)
{
VisualStateHelper.ContainsVisualState(tabItem, "StandardWidth");
}
else
{
VisualStateHelper.ContainsVisualState(tabItem, "Compact");
}
}
}
/// <summary>
/// Attempts to find a storyboard that matches the newTransition name.
/// </summary>
/// <param name="newTransition">The new transition.</param>
/// <returns>A storyboard or null, if no storyboard was found.</returns>
private Storyboard GetStoryboard(string newTransition)
{
VisualStateGroup presentationGroup = VisualStateHelper.TryGetVisualStateGroup(this, PresentationGroup);
Storyboard newStoryboard = null;
if (presentationGroup != null)
{
newStoryboard = presentationGroup.States
.OfType <VisualState>()
.Where(state => state.Name == newTransition)
.Select(state => state.Storyboard)
.FirstOrDefault();
}
return(newStoryboard);
}
void this_SizeChanged(object sender, SizeChangedEventArgs e)
{
if (!isLoaded)
{
Tab1_Unselected.Measure(e.NewSize);
collapsedWidth1 = Tab1_Unselected.DesiredSize.Width;
Tab2_Unselected.Measure(e.NewSize);
collapsedWidth2 = Tab2_Unselected.DesiredSize.Width;
Tab1_Unselected.Visibility = Visibility.Collapsed;
Tab2_Selected.Visibility = Visibility.Collapsed;
isLoaded = true;
}
var expandedWidth1 = e.NewSize.Width - collapsedWidth2;
var expandedWidth2 = e.NewSize.Width - collapsedWidth1;
var select1Storyboard = VisualStateHelper.FindStoryboard(LayoutRoot, "TabStates", "Select1");
var expand1 = (DoubleAnimation)select1Storyboard.Children.FirstOrDefault(an => Storyboard.GetTargetName(an) == "Tab1" && Storyboard.GetTargetProperty(an).Path == "Width");
expand1.To = expandedWidth1;
var collapse2 = (DoubleAnimation)select1Storyboard.Children.FirstOrDefault(an => Storyboard.GetTargetName(an) == "Tab2" && Storyboard.GetTargetProperty(an).Path == "Width");
collapse2.To = collapsedWidth2;
var select2Storyboard = VisualStateHelper.FindStoryboard(LayoutRoot, "TabStates", "Select2");
var expand2 = (DoubleAnimation)select2Storyboard.Children.FirstOrDefault(an => Storyboard.GetTargetName(an) == "Tab2" && Storyboard.GetTargetProperty(an).Path == "Width");
expand2.To = expandedWidth2;
var collapse1 = (DoubleAnimation)select2Storyboard.Children.FirstOrDefault(an => Storyboard.GetTargetName(an) == "Tab1" && Storyboard.GetTargetProperty(an).Path == "Width");
collapse1.To = collapsedWidth1;
Tab1_Selected.Width = expandedWidth1;
Tab2_Selected.Width = expandedWidth2;
if (selectedTab == 1)
{
Tab1.Width = expandedWidth1;
}
else if (selectedTab == 2)
{
Tab2.Width = expandedWidth2;
}
}
/// <summary>
/// TransitionProperty property changed handler.
/// </summary>
/// <param name="d">TransitioningContentControl that changed its Transition.</param>
/// <param name="e">Event arguments.</param>
private static void OnTransitionPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
TransitioningContentControl source = (TransitioningContentControl)d;
string oldTransition = e.OldValue as string;
string newTransition = e.NewValue as string;
if (source.IsTransitioning)
{
source.AbortTransition();
}
// find new transition
Storyboard newStoryboard = source.GetStoryboard(newTransition);
// unable to find the transition.
if (newStoryboard == null)
{
// could be during initialization of xaml that presentationgroups was not yet defined
if (VisualStateHelper.TryGetVisualStateGroup(source, PresentationGroup) == null)
{
// will delay check
source.CurrentTransition = null;
}
else
{
// revert to old value
source.SetValue(TransitionProperty, oldTransition);
throw new ArgumentException(
"TransitioningContentControl_TransitionNotFound");
}
}
else
{
source.CurrentTransition = newStoryboard;
}
}
private void BtnAddContact_Click(object sender, RoutedEventArgs e)
{
VisualStateHelper.SwitchVisualState(this, VisualStateGroup, "state_FrameZero", "state_320");
rootframe.Navigate(typeof(AddContactPage));
}