textareatabpage.cs

C#实现DHTML编辑器功能!

// DINAMIC XML Editor
//
// Copyright (c) 2002-2003 Dusan Hlavaty
// mailto: [e-mail]
//
// This software is licensed under the terms of
// GNU General Public license
//
using System;

using XML_editor.Common;

namespace XML_editor.TabPages
{
	/// <summary>
	/// <see cref="TextAreaTabPage"/> zdruzuje textovy editor (<see cref="DLTextEditor.TextAreaControl"/>)
	/// do komponenty <see cref="Crownwood.Magic.Controls.TabPage"/>
	/// </summary>
	public class TextAreaTabPage : Crownwood.Magic.Controls.TabPage
	{

		/// <summary>
		/// true = ak v dokumente boli vykonane nejake zmeny
		/// </summary>
		private bool textareaHasChanges = false;

		/// <summary>
		/// true = ak tento subor je novy a nebol este nikdy ulozeny na disk
		/// </summary>
		private bool isNewFile = true;

		// -------------------------------------------------------------------------
		/// <summary>
		/// true = ak tento subor je novy a nebol este nikdy ulozeny na disk
		/// </summary>
		public bool IsNewFile
		{
			get 
			{
				return this.isNewFile;
			}
			set 
			{
				this.isNewFile = value;
			}
		}

		// -------------------------------------------------------------------------
		/// <summary>
		/// Titulok tohoto (<see cref="TextAreaTabPage"/>) okna 
		/// </summary>
		public string TitleToShow
		{
			get 
			{
				return this.Title.TrimEnd('*');
			}
		}

		// -------------------------------------------------------------------------
		/// <summary>
		/// true = ak v dokumente boli vykonane nejake zmeny
		/// </summary>
		public bool TextAreaHasChanges
		{
			get
			{
				return this.textareaHasChanges;
			}
		}
		// -------------------------------------------------------------------------
		/// <summary>
		/// Textovy editor (<see cref="TextAreaControl"/>), ktory je 'zabaleny'
		/// v tomto TabPage
		/// </summary>
		public DLTextEditor.TextAreaControl TextAreaControl
		{
			get 
			{
				return (this.Control as DLTextEditor.TextAreaControl);
			}
		}
		
		// -------------------------------------------------------------------------
		/// <summary>
		/// Inicializuje instanciu <see cref="TextAreaTabPage"/>. Vytvori
		/// vnutri tohoto objektu instanciu <see cref="DLTextEditor.TextAreaControl"/>.
		/// </summary>
		/// <param name="title">Titulok, ktory sa ma vypisat do zalozky</param>
		/// <param name="icon">Ikonka, ktora sa ma vykreslit na zalozku</param>
		public TextAreaTabPage(string title, System.Drawing.Icon icon) : base(title)
		{
			this.Icon = icon;
			DLTextEditor.TextAreaControl txt = new DLTextEditor.TextAreaControl();
			txt.FileName = title;
			this.Control = txt;
			txt.Document.DocumentChanged += new DLTextEditor.Document.DocumentAggregatorEventHandler(DocumentChanged);
			txt.DocumentSaved += new EventHandler(DocumentHasBeenSaved);
		}

		// -------------------------------------------------------------------------
		/// <summary>
		/// Inicializuje instanciu <see cref="TextAreaTabPage"/>.
		/// </summary>
		/// <param name="title">Titulok, ktory sa ma vypisat do zalozky</param>
		/// <param name="icon">Ikonka, ktora sa ma vykreslit na zalozku</param>
		/// <param name="textAreaControl">instancia <see cref="DLTextEditor.TextAreaControl"/>,
		/// ktoru ma tento <see cref="TextAreaTabPage"/> obsahovat</param>
		public TextAreaTabPage(string title, System.Drawing.Icon icon, DLTextEditor.TextAreaControl textAreaControl) : base(title)
		{
			this.Icon = icon;
			this.Control = textAreaControl;
			textAreaControl.Document.DocumentChanged += new DLTextEditor.Document.DocumentAggregatorEventHandler(DocumentChanged);
			textAreaControl.DocumentSaved += new EventHandler(DocumentHasBeenSaved);
		}
	
		// -------------------------------------------------------------------------
		/// <summary>
		/// Obsluha udalosti. Vyvola sa po zmene v dokumente
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="e"></param>
		private void DocumentChanged(object sender, DLTextEditor.Document.DocumentAggregatorEventArgs e)
		{
			if (this.textareaHasChanges != true)
			{
				this.textareaHasChanges = true;
				this.Title = this.TitleToShow + "*";
			}
		}

		// -------------------------------------------------------------------------
		/// <summary>
		/// Oznami tejto <see cref="TextAreaTabPage"/>, ze obsah dokumentu bol ulozeny na disk.
		/// </summary>
		public void DocumentHasBeenSaved(object sender, EventArgs e)
		{
			this.textareaHasChanges = false;
			this.IsNewFile = false;
			System.IO.FileInfo fileInfo = new System.IO.FileInfo(TextAreaControl.FileName);
			this.Title = fileInfo.Name;
			this.Icon = IconProvider.GetIconForFileName(this, TextAreaControl.FileName);
		}

	} // public class TextAreaTabPage : ...
} // namespace XML_editor.TabPages