109 lines
3.7 KiB
C#
109 lines
3.7 KiB
C#
using System;
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using UnityEngine;
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using UnityEngine.UIElements;
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// This is to ensure backwards compatibility since TextValueField, TextValueFieldTraits and DeltaSpeed were moved from UnityEditor.UIElements to UnityEngine.UIElements.
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using UnityEditor.UIElements;
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namespace UnityEditor.ShaderGraph.Drawing
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{
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/*
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Field that allows entering a valid HLSL identifier.
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(variable name, function name, ...) this means
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no spaces, no funny characters, never starts with a number, ...
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*/
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[UxmlElement]
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public partial class IdentifierField : TextValueField<string>
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{
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IdentifierInput tsInput => (IdentifierInput)textInputBase;
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[Obsolete("UxmlFactory is deprecated and will be removed. Use UxmlElementAttribute instead.", false)]
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public new class UxmlFactory : UxmlFactory<IdentifierField, UxmlTraits> { }
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[Obsolete("UxmlTraits is deprecated and will be removed. Use UxmlElementAttribute instead.", false)]
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public new class UxmlTraits : TextValueFieldTraits<string, UxmlStringAttributeDescription> { }
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protected override string ValueToString(string v)
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{
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return v;
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}
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protected override string StringToValue(string str)
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{
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// Make sure this is a valid hlsl identifier. Allowed characters already ensures the characters are valid
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// but identifiers can't start with a number so fix this here.
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if (string.IsNullOrEmpty(str))
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{
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return "_0";
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}
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else if (Char.IsDigit(str[0]))
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{
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return "_" + str;
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}
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else
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{
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return str;
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}
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}
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public new static readonly string ussClassName = "unity-identifierfield-field";
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public new static readonly string labelUssClassName = ussClassName + "__label";
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public new static readonly string inputUssClassName = ussClassName + "__input";
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public IdentifierField() : this((string)null) { }
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public IdentifierField(string label) : base(label, -1, new IdentifierInput())
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{
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AddToClassList(ussClassName);
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labelElement.AddToClassList(labelUssClassName);
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tsInput.AddToClassList(inputUssClassName);
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}
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public override void ApplyInputDeviceDelta(Vector3 delta, DeltaSpeed speed, string startValue)
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{
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tsInput.ApplyInputDeviceDelta(delta, speed, startValue);
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}
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class IdentifierInput : TextValueInput
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{
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IdentifierField parentField => (IdentifierField)parent;
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internal IdentifierInput()
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{
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formatString = null;
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}
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protected override string allowedCharacters
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{
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get { return "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_"; }
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}
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public override void ApplyInputDeviceDelta(Vector3 delta, DeltaSpeed speed, string startValue)
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{
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}
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protected override string ValueToString(string v)
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{
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return v;
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}
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protected override string StringToValue(string str)
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{
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// Make sure this is a valid hlsl identifier. Allowed characters already ensures the characters are valid
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// but identifiers can't start with a number so fix this here.
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if (string.IsNullOrEmpty(str))
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{
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return "_0";
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}
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else if (Char.IsDigit(str[0]))
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{
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return "_" + str;
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}
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else
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{
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return str;
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}
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}
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}
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}
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}
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