using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.IO;
using System.Text;

namespace notepad
{
	/// <summary>
	/// Saveas 的摘要說明。
	/// </summary>
	public class Saveas : System.Windows.Forms.Form
	{
		private System.Windows.Forms.MainMenu mainSaveas;
		private System.Windows.Forms.MenuItem menuItem1;
		private System.Windows.Forms.ListView listView1;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.TextBox filename;
		private System.Windows.Forms.ImageList imageList1;
		private System.Windows.Forms.MenuItem menuItem2;
		private string path = "\\",acontent;
	
		public Saveas(string apath,string afilename,string content)
		{
			//
			// Windows 窗體設計器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 調用后添加任何構造函數代碼
			//
			this.Text = "請選擇另存的目錄";

			filename.Text = afilename;
			if(apath!="")
				path = apath;
			acontent = content;
			listView1.SmallImageList = this.imageList1;
			listView1.SmallImageList.ImageSize = new Size(16, 16);
			GetList();
		}

		/// <summary>
		/// 清理所有正在使用的資源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			base.Dispose( disposing );
		}

		#region Windows 窗體設計器生成的代碼
		/// <summary>
		/// 設計器支持所需的方法 - 不要使用代碼編輯器修改
		/// 此方法的內容。
		/// </summary>
		private void InitializeComponent()
		{
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Saveas));
			this.mainSaveas = new System.Windows.Forms.MainMenu();
			this.menuItem1 = new System.Windows.Forms.MenuItem();
			this.menuItem2 = new System.Windows.Forms.MenuItem();
			this.listView1 = new System.Windows.Forms.ListView();
			this.label1 = new System.Windows.Forms.Label();
			this.filename = new System.Windows.Forms.TextBox();
			this.imageList1 = new System.Windows.Forms.ImageList();
			// 
			// mainSaveas
			// 
			this.mainSaveas.MenuItems.Add(this.menuItem1);
			this.mainSaveas.MenuItems.Add(this.menuItem2);
			// 
			// menuItem1
			// 
			this.menuItem1.Text = "保存";
			this.menuItem1.Click += new System.EventHandler(this.menuItem1_Click);
			// 
			// menuItem2
			// 
			this.menuItem2.Text = "取消";
			this.menuItem2.Click += new System.EventHandler(this.menuItem2_Click);
			// 
			// listView1
			// 
			this.listView1.FullRowSelect = true;
			this.listView1.Size = new System.Drawing.Size(176, 128);
			this.listView1.View = System.Windows.Forms.View.Details;
			this.listView1.ItemActivate += new System.EventHandler(this.listView1_ItemActivate);
			// 
			// label1
			// 
			this.label1.Font = new System.Drawing.Font("宋體", 9.75F, System.Drawing.FontStyle.Regular);
			this.label1.Location = new System.Drawing.Point(0, 136);
			this.label1.Size = new System.Drawing.Size(152, 16);
			this.label1.Text = "文件名：";
			// 
			// filename
			// 
			this.filename.Font = new System.Drawing.Font("宋體", 9.75F, System.Drawing.FontStyle.Regular);
			this.filename.Location = new System.Drawing.Point(0, 152);
			this.filename.Size = new System.Drawing.Size(176, 22);
			this.filename.Text = "";
			// 
			// imageList1
			// 
			this.imageList1.Images.Add(((System.Drawing.Image)(resources.GetObject("resource"))));
			this.imageList1.Images.Add(((System.Drawing.Image)(resources.GetObject("resource1"))));
			this.imageList1.ImageSize = new System.Drawing.Size(16, 16);
			// 
			// Saveas
			// 
			this.Controls.Add(this.filename);
			this.Controls.Add(this.label1);
			this.Controls.Add(this.listView1);
	
			this.Menu = this.mainSaveas;
			this.Text = "Saveas";

		}
		#endregion

		private void GetList()
		{
			listView1.Clear();
			listView1.Columns.Add(path, listView1.Size.Width, HorizontalAlignment.Left);

			// Add the list view items
			DirectoryInfo dir = new DirectoryInfo(path);
			if(path!="\\")
			{
				ListViewItem item = new ListViewItem("..");
				item.ImageIndex = 0;
				listView1.Items.Add(item);
			}
			foreach (DirectoryInfo f in dir.GetDirectories()) 
			{
				String name = f.Name;
				ListViewItem item = new ListViewItem(name);
				item.ImageIndex = 0;
				listView1.Items.Add(item);
			}
			foreach (FileInfo f in dir.GetFiles("*.txt")) 
			{
				String name = f.Name;
				ListViewItem item = new ListViewItem(name);
				item.ImageIndex = 1;
				listView1.Items.Add(item);
			}
		}

		private void DirDecide()
		{
			if(listView1.FocusedItem!=null)
			{
				string newstr = listView1.FocusedItem.Text;
				if(newstr=="..")
				{
					path = path.Substring(0,(path.LastIndexOf("\\")));
					path = path.Substring(0,path.LastIndexOf("\\")+1);
					GetList();
				}
				else if(newstr.IndexOf(".txt")==-1&&newstr.IndexOf(".TXT")==-1)
				{
					path += newstr+"\\";
					GetList();
				}
				else
				{
					filename.Text = newstr;
				}
				filename.Focus();
			}
		}

		private void listView1_ItemActivate(object sender, System.EventArgs e)
		{
			DirDecide();
		}

		private void menuItem2_Click(object sender, System.EventArgs e)
		{
			this.Close();
		}

		private void menuItem1_Click(object sender, System.EventArgs e)
		{
			if (File.Exists(path+filename.Text)) 
			{
				if(MessageBox.Show("當前文件已存在，要覆蓋嗎？", this.Text,
					MessageBoxButtons.YesNo, MessageBoxIcon.Question,
					MessageBoxDefaultButton.Button2).ToString()=="Yes")
				{
					File.Delete(path+filename.Text);
					FileWrite(path+filename.Text);
				}
				
			}
			else
				FileWrite(path+filename.Text);
			
			Start start = new Start(path,filename.Text);
			start.Show();
			this.Close();
		}

		private void FileWrite(string filepath)
		{
			//創建新文件并寫入
			using (StreamWriter fs = new StreamWriter(filepath,false,System.Text.Encoding.Default)) 
			{
				string[] content = System.Text.RegularExpressions.Regex.Split(acontent,"\r\n");
				for(int i=0;i<content.Length;i++)
					fs.WriteLine(content[i]);
				fs.Close();
			}
		}
	}
}