using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;

namespace Gs.DevApp.DevFrm.Sys
{
    public enum FileType { Txt, Xml, Pdf, Bin, Zip, All, Img, Excel }
    public class FileSelector
    {
        public static string Title = "Please choose the file:";
        public static string Filter = "Text files (*.txt)|*.txt|All files (*.*)|*.*";
        public static FileType FileExtension
        {
            set
            {
                switch (value)
                {
                    case FileType.Txt:
                        Filter = "Text files(*.txt)|*.txt|All files(*.*)|*.*";
                        break;
                    case FileType.Excel:
                        Filter = "Text files(*.xls;*.xlsx)|*.xls;*.xlsx|All files(*.*)|*.*";
                        break;
                    case FileType.Xml:
                        Filter = "XML files(*.xml)|*.xml|Config files(*.config)|*.config|All files(*.*)|*.*";
                        break;
                    case FileType.Pdf:
                        Filter = "Pdf files(*.Pdf)|*.Pdf|Pdf form files(*.fdf)|*.fdf|All files(*.*)|*.*";
                        break;
                    case FileType.Bin:
                        Filter = "Binary files(*.bin)|*.bin|Application files(*.exe;*.lib;*.dll)|*.exe;*.lib;*.dll|All files(*.*)|*.*";
                        break;
                    case FileType.Zip:
                        Filter = "Zip files(*.zip;*.rar)|*.zip;*.rar|All files(*.*)|*.*";
                        break;
                    case FileType.Img:
                        Filter = "GIF(*.gif)|*.gif|Jpeg(*.jpg)|*.jpg|Bmp(*.bmp)|*.bmp|Emf(*.emf)|*.emf|Png(*.png)|*.png";
                        break;
                    case FileType.All:
                        Filter = "All files(*.*)|*.*";
                        break;
                }
            }
        }
        ///<summary>
        ///Get or set the initial directory displayed by the file dialog box.
        ///</summary>
        public static OpenFileDialog OFD = new OpenFileDialog();
        public static SaveFileDialog SFD = new SaveFileDialog();

        public static string InitialPath
        {
            set
            {
                OFD.InitialDirectory = value;
                SFD.InitialDirectory = value;
            }
        }

        public static string BrowseFile()
        {
            OFD.Title = Title;
            OFD.Filter = Filter;
            if (OFD.ShowDialog() == DialogResult.OK)
            {
                return OFD.FileName;
            }
            else
            {
                return null;
            }
        }

        public static string BrowseFileForSave()
        {
            SFD.Title = Title;
            SFD.Filter = Filter;
            if (SFD.ShowDialog() == DialogResult.OK)
            {
                return SFD.FileName;
            }
            else
            {
                return null;
            }
        }

        public static string BrowseFile(FileType type)
        {
            FileExtension = type;
            return BrowseFile();
        }

        public static string BrowseFile(string filter)
        {
            Filter = filter;
            return BrowseFile();
        }

        public static string BrowseFileForSave(FileType type)
        {
            FileExtension = type;
            return BrowseFileForSave();
        }

        public static string BrowseFileForSave(string filter)
        {
            Filter = filter;
            return BrowseFileForSave();
        }
        public static string BrowseFilePathForSave()
        {
            FolderBrowserDialog fbd = new FolderBrowserDialog();
            if (fbd.ShowDialog() == DialogResult.OK)
            {
                return fbd.SelectedPath; //获得选择的文件夹路径
            }
            else
            {
                return "";
            }
        }
    }
}