protected override async Task OnAfterRenderAsync(bool firstRender)
{
await base.OnAfterRenderAsync(firstRender);
if (firstRender)
{
thisRef = DotNetObjectReference.Create(this);
clsBuilder = HtmlPropertyBuilder.CreateCssClassBuilder()
.Add("blazor-animation")
.Add(Cls?.Split(' ') ?? new string[0]);
await JSRuntime.InvokeVoidAsync("RegisterAnimationBegin", thisRef, animationElement);
styleBuilder = HtmlPropertyBuilder.CreateCssStyleBuilder()
.Add(InitialStyle?.Split(';') ?? new string[0])
.AddIf(IsAbsolute, "position:absolute")
.Add("transition:all 1s ease");
if (paths.Any())
{
var firstStyle = paths.Peek();
styleBuilder.Remove("transition").Add($"transition:all {(firstStyle.Duration <= 0 ? 1000 : firstStyle.Duration)}ms ease");
}
MarkAsRequireRender();
StateHasChanged();
return;
}
if (!animationBegined)
{
animationBegined = true;
await AnimationElementLoadAsync();
}
}
private void ExecuteAnimation(string style, bool increment)
{
animating = true;
var styles = style.Split(';');
currentStyleNames = styles.Select(x => x.Split(':')[0]).ToList();
for (int i = 0; i < currentStyleNames.Count; i++)
{
var styleName = currentStyleNames[i];
if (styleName == "margin")
{
currentStyleNames[i] = "margin-left";
currentStyleNames.AddRange(new string[] { "margin-right", "margin-bottom", "margin-top" });
continue;
}
if (styleName == "padding")
{
currentStyleNames[i] = "padding-left";
currentStyleNames.AddRange(new string[] { "padding-right", "padding-bottom", "padding-top" });
continue;
}
}
foreach (var styleItem in styles)
{
var styleName = styleItem.Split(':')[0];
var finalStyle = styleItem;
if (increment && styleItem.EndsWith("px", StringComparison.CurrentCultureIgnoreCase))
{
var incrementValue = Convert.ToDouble(Regex.Match(styleItem, @"\d+\.*").Value);
var oldStyle = styleBuilder.FirstOrDefault(x => x.StartsWith($"{styleName}:"));
if (oldStyle == null)
{
styleBuilder.Remove(styleName).Add(finalStyle);
continue;
}
var oldValue = Convert.ToDouble(Regex.Match(oldStyle, @"\d+\.*").Value);
finalStyle = $"{styleName}:{(oldValue + incrementValue).ToString()}px";
styleBuilder.Remove(styleName).Add(finalStyle);
continue;
}
styleBuilder.Remove(styleName).Add(finalStyle);
}
MarkAsRequireRender();
StateHasChanged();
}