using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.Runtime.InteropServices;


/// <summary>
/// time:2019年10月10日 15:43
/// author:Sun
/// des:FileDialog 调取Win窗口的管理器
///
/// github:https://github.com/KingSun5
/// csdn:https://blog.csdn.net/Mr_Sun88
/// </summary>
public class FileDialogMgr
{
 /// <summary>
 /// 自定义打开文件的数据格式
 /// </summary>
 public OpenDialogData CustomOpenData;
 /// <summary> 
 /// 自定义保存文件的数据格式
 /// </summary>
 public SaveDialogData CustomSaveData;
 public FileDialogMgr()
 {
 InitFileDialogMgr();
 }
 /// <summary>
 /// 初始化管理器的相关信息
 /// </summary>
 private void InitFileDialogMgr()
 {
 //初始打开窗口的数据
 CustomOpenData = new OpenDialogData();
 CustomOpenData.structSize = Marshal.SizeOf(CustomOpenData);
 CustomOpenData.filter = "All Files0円*.*0円0円";
 CustomOpenData.file = new string(new char[256]);
 CustomOpenData.maxFile = CustomOpenData.file.Length;
 CustomOpenData.fileTitle = new string(new char[1000]);
 CustomOpenData.maxFileTitle = CustomOpenData.fileTitle.Length;
 CustomOpenData.initialDir = Application.dataPath.Replace('/', '\\') + "\\aaa\\";
 CustomOpenData.title = "打开项目";
 CustomOpenData.flags = 0x00080000 | 0x00001000 | 0x00000800 | 0x00000200 | 0x00000008;

 //初始保存窗口的数据
 CustomSaveData = new SaveDialogData();
 CustomSaveData.structSize = Marshal.SizeOf(CustomSaveData);
 CustomSaveData.filter = "All files (*.*)|*.*";
 CustomSaveData.file = new string(new char[256]);
 CustomSaveData.maxFile = CustomSaveData.file.Length;
 CustomSaveData.fileTitle = new string(new char[64]);
 CustomSaveData.maxFileTitle = CustomSaveData.fileTitle.Length;
 CustomSaveData.initialDir = Application.dataPath.Replace('/', '\\') ; // default path 
 CustomSaveData.title = "保存项目";
 CustomSaveData.flags = 0x00080000 | 0x00001000 | 0x00000800 | 0x00000200 | 0x00000008;

 }

 #region -------------------------------------打开窗口-------------------------------------

 /// <summary>
 /// 打开窗口
 /// </summary>
 /// <returns></returns> 和该文件相关的数据
 public OpenDialogData OpenFileDlg()
 {
 if (OpenFileDialog.GetOpenFileName(CustomOpenData))
 {
 return CustomOpenData;
 }
 return null;
 }

 #endregion -------------------------------------------------------------------------------

 #region -------------------------------------保存窗口-------------------------------------
 /// <summary>
 /// 打开窗口
 /// </summary>
 /// <returns></returns> 和该文件相关的数据
 public SaveDialogData SaveFileDlg()
 {
 if (SaveFileDialog.GetSaveFileName(CustomSaveData))
 {
 return CustomSaveData;
 }
 return null;
 }
 #endregion -------------------------------------------------------------------------------

 #region -----------------------------------设置过滤方式-----------------------------------

 /// <summary>
 /// 设置单个过滤方式
 /// </summary>
 public void SetFilteringWay(EnumFilteringWay type)
 {
 CustomOpenData.filter = GetFilteringWay(type);
 }

 /// <summary>
 /// 设置多个过滤方式
 /// </summary>
 /// <param name="types"></param>
 public void SetFilteringWays(EnumFilteringWay[] types)
 {
 if (types == null || types.Length == 1)
 {
 CustomOpenData.filter = "All Files0円*.*0円0円";
 return;
 }
 CustomOpenData.filter = "";
 for (int i = 0; i < types.Length; i++)
 {
 if (types[i] == EnumFilteringWay.All)
 {
 CustomOpenData.filter = "All Files0円*.*0円0円";
 break;
 }
 CustomOpenData.filter += GetFilteringWay(types[i]);
 }
 }
 private string GetFilteringWay(EnumFilteringWay type)
 {
 switch (type)
 {
 case EnumFilteringWay.Txt:
 return "文本文件0円*.txt0円";
 case EnumFilteringWay.Json:
 return "Json文件0円*.json0円";
 case EnumFilteringWay.Excel:
 return "Excel文件0円*.xlsx0円";
 case EnumFilteringWay.Png:
 return "Png图片0円*.png0円";
 case EnumFilteringWay.Jpg:
 return "Jpg图片0円*.jpg0円";
 }
 return "All Files0円*.*0円0円";
 }


 #endregion -------------------------------------------------------------------------------

 #region ----------------------------------设置文件拓展名----------------------------------
 public void SetFileExtension(string extension)
 {
 CustomSaveData.defExt = extension;
 }
 #endregion -------------------------------------------------------------------------------

}

public enum EnumFilteringWay
{
 All,
 Txt,
 Json,
 Excel,
 Png,
 Jpg,
}