void OpenAccordion(AccordionEntry entry)
{
// Get the element (cell) touched
var element = m_cellStackLayout.Children.FirstOrDefault(x => x == entry.Cell);
if (element == null)
{
return;
}
double position = 0;
entry.View.Animate("expand",
x =>
{
entry.View.IsVisible = true;
entry.View.HeightRequest = entry.OriginalSize.Height * x;
// calculate te position to be scrolled based on the X from Animate and element Y position
position = element.Y * x;
}, 16, AnimationDuration, Easing.SpringOut, (d, b) =>
{
m_scrollView.ScrollToAsync(0, position, true);
entry.View.IsVisible = true;
});
}
void CloseAccordion(AccordionEntry entry)
{
entry.View.Animate("colapse",
x =>
{
var change = entry.OriginalSize.Height * x;
entry.View.HeightRequest = entry.OriginalSize.Height - change;
}, 0, AnimationDuration, Easing.SpringIn, (d, b) =>
{
entry.View.IsVisible = false;
});
}
/// <summary>
/// Add the specified cell and view.
/// </summary>
/// <param name="cell">cell.</param>
/// <param name="view">View.</param>
public void Add(View cell, View view)
{
if (cell == null)
{
throw new ArgumentNullException(nameof(cell));
}
if (view == null)
{
throw new ArgumentNullException(nameof(view));
}
var entry = new AccordionEntry()
{
Cell = cell,
View = new ScrollView()
{
Content = view
},
OriginalSize = new Size(view.WidthRequest, view.HeightRequest)
};
m_entries.Add(entry);
m_cellStackLayout.Children.Add(entry.Cell);
m_cellStackLayout.Children.Add(entry.View);
var cellIndex = m_entries.Count - 1;
var tapGestureRecognizer = new TapGestureRecognizer();
if (CellTouched == null)
{
tapGestureRecognizer.Tapped += (object sender, EventArgs e) => OnCellTouchUpInside(cellIndex);
}
else
{
tapGestureRecognizer.Tapped += (object sender, EventArgs e) => CellTouched(cellIndex);
}
cell.GestureRecognizers.Add(tapGestureRecognizer);
}
void CloseAccordion(AccordionEntry entry)
{
entry.View.Animate("colapse",
x =>
{
var change = entry.OriginalSize.Height * x;
entry.View.HeightRequest = entry.OriginalSize.Height - change;
}, 0, AnimationDuration, Easing.SpringIn, (d, b) =>
{
entry.View.IsVisible = false;
});
}
void OpenAccordion(AccordionEntry entry)
{
// Get the element (cell) touched
var element = m_cellStackLayout.Children.FirstOrDefault(x => x == entry.Cell);
if (element == null)
return;
double position = 0;
entry.View.Animate("expand",
x =>
{
entry.View.IsVisible = true;
entry.View.HeightRequest = entry.OriginalSize.Height * x;
// calculate te position to be scrolled based on the X from Animate and element Y position
position = element.Y * x;
}, 16, AnimationDuration, Easing.SpringOut, (d, b) =>
{
m_scrollView.ScrollToAsync(0, position, true);
entry.View.IsVisible = true;
});
}
/// <summary>
/// Add the specified cell and view.
/// </summary>
/// <param name="cell">cell.</param>
/// <param name="view">View.</param>
public void Add(View cell, View view)
{
if (cell == null)
throw new ArgumentNullException(nameof(cell));
if (view == null)
throw new ArgumentNullException(nameof(view));
var entry = new AccordionEntry()
{
Cell = cell,
View = new ScrollView()
{
Content = view
},
OriginalSize = new Size(view.WidthRequest, view.HeightRequest)
};
m_entries.Add(entry);
m_cellStackLayout.Children.Add(entry.Cell);
m_cellStackLayout.Children.Add(entry.View);
var cellIndex = m_entries.Count - 1;
var tapGestureRecognizer = new TapGestureRecognizer();
if (CellTouched == null)
tapGestureRecognizer.Tapped += (object sender, EventArgs e) => OnCellTouchUpInside(cellIndex);
else
tapGestureRecognizer.Tapped += (object sender, EventArgs e) => CellTouched(cellIndex);
cell.GestureRecognizers.Add(tapGestureRecognizer);
}