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🆕 feat(ExpansionPanel): support for lazy loading the DOM of content #428

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merged 2 commits into from
Jun 8, 2023
Merged

🆕 feat(ExpansionPanel): support for lazy loading the DOM of content #428

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683ce8c
🆕 feat(ExpansionPanel): support for lazy loading the DOM of content
capdiem Jun 7, 2023
b9035be
🆕 feat(ExpansionPanelContent): eager: force to render on init
capdiem Jun 7, 2023
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4 changes: 3 additions & 1 deletion src/Component/BlazorComponent/Components/ExpansionPanels/BExpansionPanel.razor.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@
{
public partial class BExpansionPanel : BGroupItem<BExpansionPanels>
{
public BExpansionPanel() : base(GroupType.ExpansionPanels)
public BExpansionPanel() : base(GroupType.ExpansionPanels, true)
{
}

Expand All @@ -15,6 +15,8 @@ public BExpansionPanel() : base(GroupType.ExpansionPanels)

public bool IsReadonly => ItemGroup != null && (ItemGroup.Readonly || Readonly);

public bool Booted => IsBooted;

public async Task Toggle()
{
await ToggleAsync();
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18 changes: 10 additions & 8 deletions src/Component/BlazorComponent/Components/ExpansionPanels/BExpansionPanelContent.razor
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Original file line number Diff line number Diff line change
@@ -1,11 +1,13 @@
@namespace BlazorComponent
@inherits BDomComponentBase

<ExpandTransition>
<ShowTransitionElement Value="ExpansionPanel?.InternalIsActive is true" class="@CssProvider.GetClass()" style="@CssProvider.GetStyle()">
<div class="@CssProvider.GetClass("wrap")">
@ChildContent
</div>
</ShowTransitionElement>
</ExpandTransition>

@if (_isBooted || Eager)
{
<ExpandTransition>
<ShowTransitionElement Value="_isActive" class="@CssProvider.GetClass()" style="@CssProvider.GetStyle()">
<div class="@CssProvider.GetClass("wrap")">
@ChildContent
</div>
</ShowTransitionElement>
</ExpandTransition>
}
33 changes: 33 additions & 0 deletions src/Component/BlazorComponent/Components/ExpansionPanels/BExpansionPanelContent.razor.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,40 @@ public partial class BExpansionPanelContent : BDomComponentBase
[CascadingParameter]
public BExpansionPanel? ExpansionPanel { get; set; }

[Parameter]
public bool Eager { get; set; }

[Parameter]
public RenderFragment? ChildContent { get; set; }

private bool _isBooted;
private bool _booting;
private bool _isActive;

protected override async Task OnParametersSetAsync()
{
await base.OnParametersSetAsync();

if (ExpansionPanel != null)
{
if ((_isBooted && _booting == false) || Eager)
{
_isActive = ExpansionPanel.InternalIsActive;
}
else if (ExpansionPanel.Booted)
{
_isBooted = true;
_booting = true;

if (ExpansionPanel.InternalIsActive)
{
await Task.Delay(16);

_booting = false;
_isActive = true;
}
}
}
}
}
}