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