76 lines
2.7 KiB
C#
76 lines
2.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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namespace Mustache {
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/// <summary>
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/// Defines a tag that conditionally prints its content, based on whether the passed in values are equal
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/// </summary>
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internal sealed class LteTagDefinition : ConditionTagDefinition {
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private const string ConditionParameter = "condition";
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private const string TargetValueParameter = "targetValue";
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/// <summary>
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/// Initializes a new instance of a IfTagDefinition.
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/// </summary>
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public LteTagDefinition()
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: base("lte") {}
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/// <summary>
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/// Gets whether the tag only exists within the scope of its parent.
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/// </summary>
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protected override bool GetIsContextSensitive() {
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return false;
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}
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/// <summary>
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/// Gets the parameters that can be passed to the tag.
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/// </summary>
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/// <returns>The parameters.</returns>
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protected override IEnumerable<TagParameter> GetParameters() {
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return new[] {
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new TagParameter(ConditionParameter) {IsRequired = true},
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new TagParameter(TargetValueParameter) {IsRequired = true}
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};
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}
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/// <summary>
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/// Gets whether the primary generator group should be used to render the tag.
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/// </summary>
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/// <param name="arguments">The arguments passed to the tag.</param>
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/// <returns>
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/// True if the primary generator group should be used to render the tag;
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/// otherwise, false to use the secondary group.
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/// </returns>
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public override bool ShouldGeneratePrimaryGroup(Dictionary<string, object> arguments) {
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object condition = arguments[ConditionParameter];
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object targetValue = arguments[TargetValueParameter];
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return isConditionSatisfied(condition, targetValue);
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}
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private bool isConditionSatisfied(object condition, object targetValue) {
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if (condition == null || targetValue == null) {
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return false;
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}
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try {
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return Convert.ToDouble(condition) <= Convert.ToDouble(targetValue);
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} catch (Exception exception) {
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return false;
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}
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return false;
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}
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/// <summary>
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/// Gets the parameters that are used to create a new child context.
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/// </summary>
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/// <returns>The parameters that are used to create a new child context.</returns>
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public override IEnumerable<TagParameter> GetChildContextParameters() {
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return new TagParameter[0];
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}
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}
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}
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