init free 2.1.3

2025-08-02 20:11:41 +08:00
commit 24bc0ab149
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+using UnityEngine;
+
+namespace NovaSamples.UIControls
+{
+    /// <summary>
+    /// Base class for classes that provide input to <see cref="TextField"/>.
+    /// </summary>
+    public abstract class TextFieldInputProvider : MonoBehaviour
+    {
+        [Tooltip("The input field to which this class provides input.")]
+        [SerializeField]
+        protected TextField inputField = null;
+        [Tooltip("The focuser, used to determine when this class should start providing input.")]
+        [SerializeField]
+        protected TextFieldSelector selector = null;
+        [SerializeField]
+        [Tooltip("If true, the user can input newlines into the field.")]
+        protected bool allowNewlines = true;
+
+        protected abstract void HandleFocused();
+        protected abstract void HandleFocusLost();
+
+        protected virtual void OnEnable()
+        {
+            // Subscribe to focus change events
+            selector.OnFocused += HandleFocused;
+            selector.OnFocusLost += HandleFocusLost;
+        }
+
+        protected virtual void OnDisable()
+        {
+            // Unsubscribe from focus change events
+            selector.OnFocused -= HandleFocused;
+            selector.OnFocusLost -= HandleFocusLost;
+        }
+
+        /// <summary>
+        /// Stub function for text/character validation. Can be extended to 
+        /// support different scenarios, e.g. numbers only, alphanumerics only, etc.
+        /// </summary>
+        /// <param name="c"></param>
+        /// <returns></returns>
+        protected bool IsValidChar(char c)
+        {
+            // Don't allow return chars or tabulator key to be entered into single line fields.
+            if (!allowNewlines && (c == '\t' || c == '\r' || c == 10))
+            {
+                return false;
+            }
+
+            // Null character
+            if (c == 0)
+            {
+                return false;
+            }
+
+            // Delete key on mac
+            if (c == 127)
+            {
+                return false;
+            }
+
+            return true;
+        }
+    }
+}
+