135 lines
2.5 KiB
C#
135 lines
2.5 KiB
C#
using System.Collections.Generic;
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namespace Lean.Touch
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{
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/// <summary>This base class can be used to associate extra data with the specified LeanFinger instance.</summary>
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public abstract class LeanFingerData
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{
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// The finger associated with this link
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public LeanFinger Finger;
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public static int Count<T>(List<T> fingerDatas)
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where T : LeanFingerData
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{
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var count = 0;
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if (fingerDatas != null)
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{
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for (var i = fingerDatas.Count - 1; i >= 0; i--)
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{
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if (fingerDatas[i].Finger != null)
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{
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count++;
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}
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}
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}
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return count;
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}
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public static bool Exists<T>(List<T> fingerDatas, LeanFinger finger)
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where T : LeanFingerData
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{
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if (fingerDatas != null)
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{
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for (var i = fingerDatas.Count - 1; i >= 0; i--)
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{
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if (fingerDatas[i].Finger == finger)
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{
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return true;
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}
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}
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}
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return false;
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}
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public static void Remove<T>(List<T> fingerDatas, LeanFinger finger, Stack<T> pool = null)
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where T : LeanFingerData
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{
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if (fingerDatas != null)
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{
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for (var i = fingerDatas.Count - 1; i >= 0; i--)
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{
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var fingerData = fingerDatas[i];
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if (fingerData.Finger == finger)
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{
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fingerDatas.RemoveAt(i);
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if (pool != null)
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{
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pool.Push(fingerData);
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}
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}
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}
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}
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}
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public static void RemoveAll<T>(List<T> fingerDatas, Stack<T> pool = null)
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where T : LeanFingerData
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{
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if (fingerDatas != null)
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{
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if (pool != null)
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{
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for (var i = fingerDatas.Count - 1; i >= 0; i--)
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{
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pool.Push(fingerDatas[i]);
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}
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}
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fingerDatas.Clear();
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}
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}
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public static T Find<T>(List<T> fingerDatas, LeanFinger finger)
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where T : LeanFingerData
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{
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if (fingerDatas != null)
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{
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// Find existing link?
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for (var i = fingerDatas.Count - 1; i >= 0; i--)
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{
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var fingerData = fingerDatas[i];
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if (fingerData.Finger == finger)
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{
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return fingerData;
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}
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}
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}
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return null;
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}
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public static T FindOrCreate<T>(ref List<T> fingerDatas, LeanFinger finger)
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where T : LeanFingerData, new()
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{
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if (fingerDatas == null)
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{
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fingerDatas = new List<T>();
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}
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// Find existing link?
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for (var i = fingerDatas.Count - 1; i >= 0; i--)
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{
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var fingerData = fingerDatas[i];
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if (fingerData.Finger == finger)
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{
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return fingerData;
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}
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}
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// Make new link?
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var newFingerData = new T();
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newFingerData.Finger = finger;
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fingerDatas.Add(newFingerData);
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return newFingerData;
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}
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}
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} |