using System;

using UnityEngine;

namespace UnityEditor.TreeViewExamples

{

internal class TreeViewColumnHeader

{

public float[] columnWidths

{

get;

set;

}

public float minColumnWidth

{

get;

set;

}

public float dragWidth

{

get;

set;

}

public Action<int, Rect> columnRenderer

{

get;

set;

}

public TreeViewColumnHeader()

{

this.minColumnWidth = 10f;

this.dragWidth = 6f;

}

public void OnGUI(Rect rect)

{

float num = rect.x;

for (int i = 0; i < this.columnWidths.Length; i++)

{

Rect arg = new Rect(num, rect.y, this.columnWidths[i], rect.height);

num += this.columnWidths[i];

Rect position = new Rect(num - this.dragWidth / 2f, rect.y, 3f, rect.height);

float x = EditorGUI.MouseDeltaReader(position, true).x;

if (x != 0f)

{

this.columnWidths[i] += x;

this.columnWidths[i] = Mathf.Max(this.columnWidths[i], this.minColumnWidth);

}

if (this.columnRenderer != null)

{

this.columnRenderer(i, arg);

}

if (Event.current.type == EventType.Repaint)

{

EditorGUIUtility.AddCursorRect(position, MouseCursor.SplitResizeLeftRight);

}

}

}

}

}