/// <summary>
/// Regenerates the <see cref="RenderTree"/> and adds the changes to the
/// <paramref name="batchBuilder"/>.
/// </summary>
public void Render(Renderer renderer, RenderBatchBuilder batchBuilder)
{
if (_component is IHandlePropertiesChanged notifyableComponent)
{
notifyableComponent.OnPropertiesChanged();
}
// Swap the old and new tree builders
(_renderTreeBuilderCurrent, _renderTreeBuilderPrevious) = (_renderTreeBuilderPrevious, _renderTreeBuilderCurrent);
_renderTreeBuilderCurrent.Clear();
_component.BuildRenderTree(_renderTreeBuilderCurrent);
var diff = RenderTreeDiffBuilder.ComputeDiff(
_renderer,
batchBuilder,
_componentId,
_renderTreeBuilderPrevious.GetFrames(),
_renderTreeBuilderCurrent.GetFrames());
batchBuilder.UpdatedComponentDiffs.Append(diff);
// Process disposal queue now in case it causes further component renders to be enqueued
while (batchBuilder.ComponentDisposalQueue.Count > 0)
{
var disposeComponentId = batchBuilder.ComponentDisposalQueue.Dequeue();
renderer.DisposeInExistingBatch(batchBuilder, disposeComponentId);
}
}
/// <summary>
/// Notifies the component that it is being disposed.
/// </summary>
public void NotifyDisposed(RenderBatchBuilder batchBuilder)
{
// TODO: Handle components throwing during dispose. Shouldn't break the whole render batch.
if (_component is IDisposable disposable)
{
disposable.Dispose();
}
RenderTreeDiffBuilder.DisposeFrames(batchBuilder, _renderTreeBuilderCurrent.GetFrames());
}
private void RenderInExistingBatch(RenderBatchBuilder batchBuilder, int componentId)
{
GetRequiredComponentState(componentId).RenderIntoBatch(batchBuilder);
// Process disposal queue now in case it causes further component renders to be enqueued
while (batchBuilder.ComponentDisposalQueue.Count > 0)
{
var disposeComponentId = batchBuilder.ComponentDisposalQueue.Dequeue();
GetRequiredComponentState(disposeComponentId).DisposeInBatch(batchBuilder);
_componentStateById.Remove(disposeComponentId);
batchBuilder.DisposedComponentIds.Append(disposeComponentId);
}
}
/// <summary>
/// Regenerates the <see cref="RenderTree"/> and adds the changes to the
/// <paramref name="batchBuilder"/>.
/// </summary>
public void Render(RenderBatchBuilder batchBuilder)
{
// Swap the old and new tree builders
(_renderTreeBuilderCurrent, _renderTreeBuilderPrevious) = (_renderTreeBuilderPrevious, _renderTreeBuilderCurrent);
_renderTreeBuilderCurrent.Clear();
_component.BuildRenderTree(_renderTreeBuilderCurrent);
_diffComputer.ApplyNewRenderTreeVersion(
batchBuilder,
_componentId,
_renderTreeBuilderPrevious.GetFrames(),
_renderTreeBuilderCurrent.GetFrames());
}
public void DisposeInBatch(RenderBatchBuilder batchBuilder)
{
_componentWasDisposed = true;
// TODO: Handle components throwing during dispose. Shouldn't break the whole render batch.
if (_component is IDisposable disposable)
{
disposable.Dispose();
}
RenderTreeDiffBuilder.DisposeFrames(batchBuilder, _renderTreeBuilderCurrent.GetFrames());
if (_cascadingParameters != null)
{
RemoveCascadingParameterSubscriptions();
}
}
public void RenderIntoBatch(RenderBatchBuilder batchBuilder, Action <RenderTreeBuilder> renderAction)
{
// Swap the old and new tree builders
(_renderTreeBuilderCurrent, _renderTreeBuilderPrevious) = (_renderTreeBuilderPrevious, _renderTreeBuilderCurrent);
_renderTreeBuilderCurrent.Clear();
renderAction(_renderTreeBuilderCurrent);
var diff = RenderTreeDiffBuilder.ComputeDiff(
_renderer,
batchBuilder,
_componentId,
_renderTreeBuilderPrevious.GetFrames(),
_renderTreeBuilderCurrent.GetFrames());
batchBuilder.UpdatedComponentDiffs.Append(diff);
}
public void RenderIntoBatch(RenderBatchBuilder batchBuilder)
{
if (_component is IHandlePropertiesChanged notifyableComponent)
{
notifyableComponent.OnPropertiesChanged();
}
// Swap the old and new tree builders
(_renderTreeBuilderCurrent, _renderTreeBuilderPrevious) = (_renderTreeBuilderPrevious, _renderTreeBuilderCurrent);
_renderTreeBuilderCurrent.Clear();
_component.BuildRenderTree(_renderTreeBuilderCurrent);
var diff = RenderTreeDiffBuilder.ComputeDiff(
_renderer,
batchBuilder,
_componentId,
_renderTreeBuilderPrevious.GetFrames(),
_renderTreeBuilderCurrent.GetFrames());
batchBuilder.UpdatedComponentDiffs.Append(diff);
}
public void RenderIntoBatch(RenderBatchBuilder batchBuilder, RenderFragment renderFragment)
{
// A component might be in the render queue already before getting disposed by an
// earlier entry in the render queue. In that case, rendering is a no-op.
if (_componentWasDisposed)
{
return;
}
// Swap the old and new tree builders
(_renderTreeBuilderCurrent, _renderTreeBuilderPrevious) = (_renderTreeBuilderPrevious, _renderTreeBuilderCurrent);
_renderTreeBuilderCurrent.Clear();
renderFragment(_renderTreeBuilderCurrent);
var diff = RenderTreeDiffBuilder.ComputeDiff(
_renderer,
batchBuilder,
_componentId,
_renderTreeBuilderPrevious.GetFrames(),
_renderTreeBuilderCurrent.GetFrames());
batchBuilder.UpdatedComponentDiffs.Append(diff);
}
internal void DisposeInExistingBatch(RenderBatchBuilder batchBuilder, int componentId)
{
GetRequiredComponentState(componentId).NotifyDisposed();
batchBuilder.AddDisposedComponent(componentId);
}
internal void RenderInExistingBatch(RenderBatchBuilder batchBuilder, int componentId)
{
GetRequiredComponentState(componentId).Render(batchBuilder);
}
