protected override void BuildRenderTree(RenderTreeBuilder builder)
{
base.BuildRenderTree(builder);
LoadStateIfExists();
var rendererBuilder = new BlazorRendererTreeBuilder(builder);
rendererBuilder
.OpenElement(HtmlTagNames.Button, filterIsApplied ? "action-button action-button-small action-button-filter-active" : "action-button action-button-small")
.AddAttribute(HtmlJSEvents.OnClick,
EventCallback.Factory.Create(this, (MouseEventArgs e) =>
{
filterDefinitionOpened = !filterDefinitionOpened;
})
)
.OpenElement(HtmlTagNames.Span)
.OpenElement(HtmlTagNames.I, "fas fa-filter")
.CloseElement()
.CloseElement()
.CloseElement();
rendererBuilder.OpenElement(HtmlTagNames.Div,
filterDefinitionOpened
? parser != TryParseBool
? $"{WrapperCssClass} {WrapperCssClass}-open"
: $"{WrapperCssClass} {WrapperCssClass}-open {WrapperCssCheckboxClass}"
: $"{WrapperCssClass}");
if (parser == TryParseBool)
{
BuildRendererTreeForCheckbox(rendererBuilder);
}
else
{
BuildRendererTreeForFilterOperations(rendererBuilder);
BuildRendererTreeForInputs(rendererBuilder);
}
if (parser != TryParseBool)
{
rendererBuilder.OpenElement(HtmlTagNames.Div, "filter-buttons");
_ = rendererBuilder.OpenElement(HtmlTagNames.Button, "btn btn-light filter-buttons-clear")
.AddAttribute(HtmlJSEvents.OnClick,
EventCallback.Factory.Create(this, (MouseEventArgs e) =>
{
ClearFilter();
})
)
.AddContent("Clear")
.CloseElement()
.CloseElement();
}
rendererBuilder.CloseElement();
}
private void BuildRendererTreeForFilterOperations(BlazorRendererTreeBuilder rendererBuilder)
{
rendererBuilder
.OpenElement(HtmlTagNames.Select)
.AddAttribute(HtmlJSEvents.OnChange, EventCallback.Factory.Create(this,
(ChangeEventArgs e) =>
{
selectedFilterOperation = (FilterOperation)BindConverterExtensions.ConvertTo(e.Value, 1);
if (filterIsApplied)
{
filterContext.AddOrUpdateFilterDefinition(new ExpressionFilterDefinition(
ColumnName, selectedFilterOperation, actualFilterValue, TextComparison));
}
}));
foreach (var enumValue in Enum.GetValues(typeof(FilterOperation)))
{
var filterOperation = (FilterOperation)enumValue;
if (!allowedFilterOperations.HasFlag(filterOperation) ||
filterOperation == FilterOperation.None)
{
continue;
}
selectedFilterOperation = selectedFilterOperation == FilterOperation.None
? filterOperation
: selectedFilterOperation;
var enumStringValue = enumValue.ToString();
rendererBuilder.OpenElement(HtmlTagNames.Option);
if (enumStringValue == selectedFilterOperation.ToString())
{
rendererBuilder.AddAttribute(HtmlAttributes.Selected, true);
}
rendererBuilder
.AddAttribute(HtmlAttributes.Value, (int)enumValue)
.AddContent(enumStringValue)
.CloseElement();
}
rendererBuilder.CloseElement();
}
private void BuildRendererTreeForFilterOperations(BlazorRendererTreeBuilder rendererBuilder)
{
rendererBuilder
.OpenElement(HtmlTagNames.Select)
.AddAttribute(HtmlJSEvents.OnChange, BindMethods.SetValueHandler(delegate(int __value)
{
selectedFilterOperation = (FilterOperation)__value;
if (filterIsApplied)
{
filterContext.AddOrUpdateFilterDefinition(new ExpressionFilterDefinition(ColumnName, selectedFilterOperation, actualFilterValue));
}
}, (int)selectedFilterOperation));
foreach (var enumValue in Enum.GetValues(typeof(FilterOperation)))
{
var filterOperation = (FilterOperation)enumValue;
if (!allowedFilterOperations.HasFlag(filterOperation) ||
filterOperation == FilterOperation.None)
{
continue;
}
selectedFilterOperation = selectedFilterOperation == FilterOperation.None
? filterOperation
: selectedFilterOperation;
var enumStringValue = enumValue.ToString();
rendererBuilder.OpenElement(HtmlTagNames.Option);
if (enumStringValue == selectedFilterOperation.ToString())
{
rendererBuilder.AddAttribute(HtmlAttributes.Selected, true);
}
rendererBuilder
.AddAttribute(HtmlAttributes.Value, (int)enumValue)
.AddContent(enumStringValue)
.CloseElement();
}
rendererBuilder.CloseElement();
}