RepeateWindow.cs

using System;
using UnityEditor;
using UnityEngine;

namespace ToolKits
{
    /// <summary>
    /// 重复弹出的编辑器窗口
    /// </summary>
    public class RepeateWindow : EditorWindowBase
    {
        private static Vector2 minResolution = new Vector2(300, 200);
        private static Rect leftUpRect = new Rect(new Vector2(0, 0), minResolution);

        public static void Popup(Vector3 position)
        {
            // RepeateWindow window = new RepeateWindow();
            RepeateWindow window =
                GetWindowWithRectPrivate(typeof(RepeateWindow), leftUpRect, true, "重复弹出窗口") as RepeateWindow;
            window.minSize = minResolution;
            //要在设置位置之前，先把窗体注册到管理器中，以便更新窗体的优先级
            EditorWindowMgr.AddRepeateWindow(window);
            //刷新界面偏移量
            int offset = (window.Priority - 10) * 30;
            window.position = new Rect(new Vector2(position.x + offset, position.y + offset), new Vector2(800, 400));
            window.Show();
            //手动聚焦
            window.Focus();
        }

        /// <summary>
        /// 重写EditorWindow父类的创建窗口函数
        /// </summary>
        /// <param name="t"></param>
        /// <param name="rect"></param>
        /// <param name="utility"></param>
        /// <param name="title"></param>
        /// <returns></returns>
        private static EditorWindow GetWindowWithRectPrivate(Type t, Rect rect, bool utility, string title)
        {
            //UnityEngine.Object[] array = Resources.FindObjectsOfTypeAll(t);
            EditorWindow editorWindow = null; /*= (array.Length <= 0) ? null : ((EditorWindow)array[0]);*/
            if (!(bool) editorWindow)
            {
                editorWindow = (ScriptableObject.CreateInstance(t) as EditorWindow);
                editorWindow.minSize = new Vector2(rect.width, rect.height);
                editorWindow.maxSize = new Vector2(rect.width, rect.height);
                editorWindow.position = rect;
                if (title != null)
                {
                    editorWindow.titleContent = new GUIContent(title);
                }

                if (utility)
                {
                    editorWindow.ShowUtility();
                }
                else
                {
                    editorWindow.Show();
                }
            }
            else
            {
                editorWindow.Focus();
            }

            return editorWindow;
        }


        private void OnGUI()
        {
            OnEditorGUI();
        }

        private void OnEditorGUI()
        {
            GUILayout.Space(12);
            GUILayout.BeginVertical();
            EditorGUILayout.LabelField("我是重复弹出的窗体", GUILayout.Width(200));
            if (GUILayout.Button("创建窗体", GUILayout.Width(100)))
            {
                //重复创建自己
                Popup(this.position.position);
            }

            GUILayout.Space(12);
            if (GUILayout.Button("关闭窗体", GUILayout.Width(100)))
            {
                this.Close();
            }

            GUILayout.EndVertical();
        }

        private void OnDestroy()
        {
            //销毁窗体的时候，从管理器中移除该窗体的缓存，并且重新刷新焦点
            EditorWindowMgr.RemoveRepeateWindow(this);
            EditorWindowMgr.FoucusWindow();
        }

        private void OnFocus()
        {
            EditorWindowMgr.FoucusWindow();
        }
    }
}