richtextboxextended.cs

C#编写文本编辑器源码

			tbbStrikeout.Pushed	= fnt.Strikeout; //strikeout button
			tbbLeft.Pushed		= (rtb1.SelectionAlignment == HorizontalAlignment.Left); //justify left
			tbbCenter.Pushed	= (rtb1.SelectionAlignment == HorizontalAlignment.Center); //justify center
			tbbRight.Pushed		= (rtb1.SelectionAlignment == HorizontalAlignment.Right); //justify right
	
			//Check the correct color
			foreach(MenuItem mi in cmColors.MenuItems)
				mi.Checked = (rtb1.SelectionColor == Color.FromName(mi.Text));
			
			//Check the correct font
			foreach(MenuItem mi in cmFonts.MenuItems)
				mi.Checked = (fnt.FontFamily.Name == mi.Text);

			//Check the correct font size
			foreach(MenuItem mi in cmFontSizes.MenuItems)
				mi.Checked = ((int)fnt.SizeInPoints == float.Parse(mi.Text));
		}
		#endregion

		#region Update Toolbar Seperators
		private void UpdateToolbarSeperators()
		{
			//Save & Open
			if(!tbbSave.Visible && !tbbOpen.Visible) 
				tbbSeparator3.Visible = false;
			else
				tbbSeparator3.Visible = true;

			//Font & Font Size
			if(!tbbFont.Visible && !tbbFontSize.Visible && !tbbColor.Visible) 
				tbbSeparator5.Visible = false;
			else
				tbbSeparator5.Visible = true;

			//Bold, Italic, Underline, & Strikeout
			if(!tbbBold.Visible && !tbbItalic.Visible && !tbbUnderline.Visible && !tbbStrikeout.Visible)
				tbbSeparator1.Visible = false;
			else
				tbbSeparator1.Visible = true;

			//Left, Center, & Right
			if(!tbbLeft.Visible && !tbbCenter.Visible && !tbbRight.Visible)
				tbbSeparator2.Visible = false;
			else
				tbbSeparator2.Visible = true;

			//Undo & Redo
			if(!tbbUndo.Visible && !tbbRedo.Visible) 
				tbbSeparator4.Visible = false;
			else
				tbbSeparator4.Visible = true;
		}
#endregion

		#region RichTextBox Selection Change
		/// <summary>
		///		Change the toolbar buttons when new text is selected
		///		and raise event SelChanged
		/// </summary>
		private void rtb1_SelectionChanged(object sender, System.EventArgs e)
		{
			//Update the toolbar buttons
			UpdateToolbar();
			
			//Send the SelChangedEvent
			if (SelChanged != null)
				SelChanged(this, e);
		}
#endregion

		#region Color Click
		/// <summary>
		///     Change the richtextbox color
		/// </summary>
		private void Color_Click(object sender, System.EventArgs e)
		{
			//set the richtextbox color based on the name of the menu item
			ChangeFontColor(Color.FromName(((MenuItem)sender).Text));
		}
		#endregion

		#region Font Click
		/// <summary>
		///     Change the richtextbox font
		/// </summary>
		private void Font_Click(object sender, System.EventArgs e)
		{
			// Set the font for the entire selection
			ChangeFont(((MenuItem)sender).Text);
		}
		#endregion

		#region Font Size Click
		/// <summary>
		///     Change the richtextbox font size
		/// </summary>
		private void FontSize_Click(object sender, System.EventArgs e)
		{
			//set the richtextbox font size based on the name of the menu item
			ChangeFontSize(float.Parse(((MenuItem)sender).Text));
		}
		#endregion

		#region Link Clicked
		/// <summary>
		/// Starts the default browser if a link is clicked
		/// </summary>
		private void rtb1_LinkClicked(object sender, System.Windows.Forms.LinkClickedEventArgs e)
		{
			System.Diagnostics.Process.Start(e.LinkText);
		}
		#endregion

		#region Public Properties
		/// <summary>
		///     The toolbar that is contained with-in the RichTextBoxExtened control
		/// </summary>
		[Description("The internal toolbar control"),
		Category("Internal Controls"),
		DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
		public ToolBar Toolbar
		{
			get { return tb1; }
		}

		/// <summary>
		///     The RichTextBox that is contained with-in the RichTextBoxExtened control
		/// </summary>
		[Description("The internal richtextbox control"),
		Category("Internal Controls"),
		DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
		public RichTextBox RichTextBox
		{
			get	{ return rtb1; }
		}

		/// <summary>
		///     Show the save button or not
		/// </summary>
		[Description("Show the save button or not"),
		Category("Appearance")]
		public bool ShowSave
		{
			get { return tbbSave.Visible; }
			set { tbbSave.Visible = value; UpdateToolbarSeperators(); }
		}

		/// <summary>
		///    Show the open button or not 
		/// </summary>
		[Description("Show the open button or not"),
		Category("Appearance")]
		public bool ShowOpen
		{
			get { return tbbOpen.Visible; }
			set	{ tbbOpen.Visible = value; UpdateToolbarSeperators(); }
		}

		/// <summary>
		///     Show the stamp button or not
		/// </summary>
		[Description("Show the stamp button or not"),
		 Category("Appearance")]
		public bool ShowStamp
		{
			get { return tbbStamp.Visible; }
			set { tbbStamp.Visible = value; }
		}
		
		/// <summary>
		///     Show the color button or not
		/// </summary>
		[Description("Show the color button or not"),
		Category("Appearance")]
		public bool ShowColors
		{
			get { return tbbColor.Visible; }
			set { tbbColor.Visible = value; }
		}

		/// <summary>
		///     Show the undo button or not
		/// </summary>
		[Description("Show the undo button or not"),
		Category("Appearance")]
		public bool ShowUndo
		{
			get { return tbbUndo.Visible; }
			set { tbbUndo.Visible = value; UpdateToolbarSeperators(); }
		}

		/// <summary>
		///     Show the redo button or not
		/// </summary>
		[Description("Show the redo button or not"),
		Category("Appearance")]
		public bool ShowRedo
		{
			get { return tbbRedo.Visible; }
			set { tbbRedo.Visible = value; UpdateToolbarSeperators(); }
		}

		/// <summary>
		///     Show the bold button or not
		/// </summary>
		[Description("Show the bold button or not"),
		Category("Appearance")]
		public bool ShowBold
		{
			get { return tbbBold.Visible; }
			set { tbbBold.Visible = value; UpdateToolbarSeperators(); }
		}

		/// <summary>
		///     Show the italic button or not
		/// </summary>
		[Description("Show the italic button or not"),
		Category("Appearance")]
		public bool ShowItalic
		{
			get { return tbbItalic.Visible; }
			set { tbbItalic.Visible = value; UpdateToolbarSeperators(); }
		}

		/// <summary>
		///     Show the underline button or not
		/// </summary>
		[Description("Show the underline button or not"),
		Category("Appearance")]
		public bool ShowUnderline
		{
			get { return tbbUnderline.Visible; }
			set { tbbUnderline.Visible = value; UpdateToolbarSeperators(); }
		}

		/// <summary>
		///     Show the strikeout button or not
		/// </summary>
		[Description("Show the strikeout button or not"),
		Category("Appearance")]
		public bool ShowStrikeout
		{
			get { return tbbStrikeout.Visible; }
			set { tbbStrikeout.Visible = value; UpdateToolbarSeperators(); }
		}

		/// <summary>
		///     Show the left justify button or not
		/// </summary>
		[Description("Show the left justify button or not"),
		Category("Appearance")]
		public bool ShowLeftJustify
		{
			get { return tbbLeft.Visible; }
			set { tbbLeft.Visible = value; UpdateToolbarSeperators(); }
		}

		/// <summary>
		///     Show the right justify button or not
		/// </summary>
		[Description("Show the right justify button or not"),
		Category("Appearance")]
		public bool ShowRightJustify
		{
			get { return tbbRight.Visible; }
			set { tbbRight.Visible = value; UpdateToolbarSeperators(); }
		}

		/// <summary>
		///     Show the center justify button or not
		/// </summary>
		[Description("Show the center justify button or not"),
		Category("Appearance")]
		public bool ShowCenterJustify
		{
			get { return tbbCenter.Visible; }
			set { tbbCenter.Visible = value; UpdateToolbarSeperators(); }
		}

		/// <summary>
		///     Determines how the stamp button will respond
		/// </summary>
		StampActions m_StampAction = StampActions.EditedBy;
		[Description("Determines how the stamp button will respond"),
		Category("Behavior")]
		public StampActions StampAction
		{
			get { return m_StampAction; }
			set { m_StampAction = value; }
		}
		
		/// <summary>
		///     Color of the stamp text
		/// </summary>
		Color m_StampColor = Color.Blue;

		[Description("Color of the stamp text"),
		Category("Appearance")]
		public Color StampColor
		{
			get { return m_StampColor; }
			set { m_StampColor = value; }
		}
			
		/// <summary>
		///     Show the font button or not
		/// </summary>
		[Description("Show the font button or not"),
		Category("Appearance")]
		public bool ShowFont
		{
			get { return tbbFont.Visible; }
			set { tbbFont.Visible = value; }
		}

		/// <summary>
		///     Show the font size button or not
		/// </summary>
		[Description("Show the font size button or not"),
		Category("Appearance")]
		public bool ShowFontSize
		{
			get { return tbbFontSize.Visible; }
			set { tbbFontSize.Visible = value; }
		}

		/// <summary>
		///     Show the cut button or not
		/// </summary>
		[Description("Show the cut button or not"),
		Category("Appearance")]
		public bool ShowCut
		{
			get { return tbbCut.Visible; }
			set { tbbCut.Visible = value; }
		}

		/// <summary>
		///     Show the copy button or not
		/// </summary>
		[Description("Show the copy button or not"),
		Category("Appearance")]
		public bool ShowCopy
		{
			get { return tbbCopy.Visible; }
			set { tbbCopy.Visible = value; }
		}

		/// <summary>
		///     Show the paste button or not
		/// </summary>
		[Description("Show the paste button or not"),
		Category("Appearance")]
		public bool ShowPaste
		{
			get { return tbbPaste.Visible; }
			set { tbbPaste.Visible = value; }
		}

		/// <summary>
		///     Detect URLs with-in the richtextbox
		/// </summary>
		[Description("Detect URLs with-in the richtextbox"),
		Category("Behavior")]
		public bool DetectURLs
		{
			get { return rtb1.DetectUrls; }
			set { rtb1.DetectUrls = value; }
		}

		/// <summary>
		/// Determines if the TAB key moves to the next control or enters a TAB character in the richtextbox
		/// </summary>
		[Description("Determines if the TAB key moves to the next control or enters a TAB character in the richtextbox"),
		Category("Behavior")]
		public bool AcceptsTab
		{
			get { return rtb1.AcceptsTab; }
			set { rtb1.AcceptsTab = value; }
		}

		/// <summary>
		/// Determines if auto word selection is enabled