htmleditorcontrol.cs

来自「一个很好用的html编辑器。带源码」· CS 代码 · 共 1,178 行 · 第 1/5 页

		private Color _defaultBackColor;
		private Color _defaultForeColor;
		private HtmlFontProperty _defaultFont;

		// internal property values
		private bool _readOnly;
		private bool _toolbarVisible;
		private bool _enableVisualStyles;
		private DockStyle _toolbarDock;
		private string _bodyText;
		private string _bodyHtml;
		private string _bodyUrl;

		// internal body property values
		private Color _bodyBackColor;
		private Color _bodyForeColor;
		private HtmlFontProperty _bodyFont;
		private int[] _customColors;
		private string _imageDirectory;
		private string _htmlDirectory;
		private NavigateActionOption _navigateWindow;
		private DisplayScrollBarOption _scrollBars;
		private string _baseHref;
		private bool _autoWordWrap;

		// find and replace internal text range
		private HtmlTextRange _findRange;

		// winform generated code
		private AxSHDocVw.AxWebBrowser editorWebBrowser;
		private System.Windows.Forms.ToolBar editorToolbar;
		private System.Windows.Forms.ImageList toolbarImageList;
		private System.ComponentModel.IContainer components;
		private System.Windows.Forms.ToolBarButton toolBarCopy;
		private System.Windows.Forms.ToolBarButton toolBarPaste;
		private System.Windows.Forms.ToolBarButton toolBarBold;
		private System.Windows.Forms.ToolBarButton toolBarUnderline;
		private System.Windows.Forms.ToolBarButton toolBarItalic;
		private System.Windows.Forms.ToolBarButton toolBarUndo;
		private System.Windows.Forms.ToolBarButton toolBarRedo;
		private System.Windows.Forms.ToolBarButton toolBarFont; 
		private System.Windows.Forms.ToolBarButton toolBarCut;
		private System.Windows.Forms.ToolBarButton toolBarNormal;
		private System.Windows.Forms.ToolBarButton toolBarJustLeft;
		private System.Windows.Forms.ToolBarButton toolBarJustCenter;
		private System.Windows.Forms.ToolBarButton toolBarJustRight;
		private System.Windows.Forms.ToolBarButton toolBarIndent;
		private System.Windows.Forms.ToolBarButton toolBarOutdent;
		private System.Windows.Forms.ToolBarButton toolBarListUnordered;
		private System.Windows.Forms.ToolBarButton toolBarFontUp;
		private System.Windows.Forms.ToolBarButton toolBarColor;
		private System.Windows.Forms.ToolBarButton toolBarInsertImage;
		private System.Windows.Forms.ToolBarButton toolBarInsertLink;
		private System.Windows.Forms.ToolBarButton toolBarFindReplace;
		private System.Windows.Forms.ToolBarButton toolBarPrint;
		private System.Windows.Forms.ToolBarButton toolBarEditSep1;
		private System.Windows.Forms.ToolBarButton toolBarEditSep2;
		private System.Windows.Forms.ToolBarButton toolBarEditSep3;
		private System.Windows.Forms.ToolBarButton toolBarEditSep4;
		private System.Windows.Forms.ToolBarButton toolBarEditSep5;
		private System.Windows.Forms.ToolBarButton toolBarEditSep6;
		private System.Windows.Forms.ToolBarButton toolBarInsertLine;
		private System.Windows.Forms.ToolBarButton toolBarListOrdered;
		private System.Windows.Forms.MenuItem menuTextUndo;
		private System.Windows.Forms.MenuItem menuTextRedo;
		private System.Windows.Forms.MenuItem menuTextSep1;
		private System.Windows.Forms.MenuItem menuTextCut;
		private System.Windows.Forms.MenuItem menuTextCopy;
		private System.Windows.Forms.MenuItem menuTextPaste;
		private System.Windows.Forms.MenuItem menuTextDelete;
		private System.Windows.Forms.MenuItem menuTextFont;
		private System.Windows.Forms.MenuItem menuTextFontIncrease;
		private System.Windows.Forms.MenuItem menuTextFontDecrease;
		private System.Windows.Forms.MenuItem menuTextFontBold;
		private System.Windows.Forms.MenuItem menuTextFontItalic;
		private System.Windows.Forms.MenuItem menuTextFontUnderline;
		private System.Windows.Forms.MenuItem menuTextFontIndent;
		private System.Windows.Forms.MenuItem menuTextFontOutdent;
		private System.Windows.Forms.MenuItem menuTextFontDialog;
		private System.Windows.Forms.MenuItem menuTextFontColor;
		private System.Windows.Forms.MenuItem menuTextSelectAll;
		private System.Windows.Forms.MenuItem menuJustify;
		private System.Windows.Forms.MenuItem menuJustifyLeft;
		private System.Windows.Forms.MenuItem menuJustifyCenter;
		private System.Windows.Forms.MenuItem menuJustifyRight;
		private System.Windows.Forms.MenuItem menuTextSelectNone;
		private System.Windows.Forms.MenuItem menuFormatting;
		private System.Windows.Forms.MenuItem menuTextFontSep1;
		private System.Windows.Forms.MenuItem menuTextFontSep2;
		private System.Windows.Forms.MenuItem menuTextFontSep3;
		private System.Windows.Forms.MenuItem menuTextFontSuperscript;
		private System.Windows.Forms.MenuItem menuTextFontSubscript;
		private System.Windows.Forms.MenuItem menuInsert;
		private System.Windows.Forms.MenuItem menuInsertLine;
		private System.Windows.Forms.MenuItem menuInsertLink;
		private System.Windows.Forms.MenuItem menuInsertImage;
		private System.Windows.Forms.MenuItem menuInsertText;
		private System.Windows.Forms.MenuItem menuInsertHtml;
		private System.Windows.Forms.MenuItem menuInsertTable;
		private System.Windows.Forms.ToolBarButton toolBarInsertTable;
		private System.Windows.Forms.MenuItem menuMainSep1;
		private System.Windows.Forms.MenuItem menuMainSep2;
		private System.Windows.Forms.MenuItem menuText;
		private System.Windows.Forms.MenuItem menuTableModify;
		private System.Windows.Forms.ContextMenu contextMenuMain;
		private System.Windows.Forms.MenuItem menuTextSep3;
		private System.Windows.Forms.MenuItem menuTextSep2;
		private System.Windows.Forms.MenuItem menuTextFindReplace;
		private System.Windows.Forms.MenuItem menuDocument;
		private System.Windows.Forms.MenuItem menuDocumentOpen;
		private System.Windows.Forms.MenuItem menuDocumentSave;
		private System.Windows.Forms.MenuItem menuDocumentSep1;
		private System.Windows.Forms.MenuItem menuDocumentPrint;
		private System.Windows.Forms.MenuItem menuTextFontNormal;
		private System.Windows.Forms.MenuItem menuTextFontStrikeout;
		private System.Windows.Forms.MenuItem menuTextFontListOrdered;
		private System.Windows.Forms.MenuItem menuTextFontListUnordered;
		private System.Windows.Forms.MenuItem menuDocumentSep2;
		private System.Windows.Forms.MenuItem menuDocumentToolbar;
		private System.Windows.Forms.MenuItem menuDocumentScrollbar;
		private System.Windows.Forms.MenuItem menuDocumentWordwrap;
		private System.Windows.Forms.MenuItem menuDocumentOverwrite;
		private System.Windows.Forms.MenuItem menuTableProperties;
		private System.Windows.Forms.MenuItem menuTableInsertRow;
		private System.Windows.Forms.MenuItem menuTableDeleteRow;
		private System.Windows.Forms.ToolBarButton toolBarFontDown;


		public HtmlEditorControl()
		{
			// This call is required by the Windows.Forms Form Designer.
			InitializeComponent();

			// define the context menu for format commands
			DefineFormatBlockMenu();

			// define the default values
			// browser constants and commands
			EMPTY_PARAMETER = System.Reflection.Missing.Value;

			// default values used to reset values
			_defaultBackColor = Color.White;
			_defaultForeColor = Color.Black;
			_defaultFont = new HtmlFontProperty(this.Font);

			// set browser default values to hide IE items
			this.editorWebBrowser.AddressBar = false;
			this.editorWebBrowser.MenuBar = false;
			this.editorWebBrowser.StatusBar = false;

			// obtain the underlying web browser and set options
			// SHDocVw.WebBrowser webBrowser = (SHDocVw.WebBrowser)this.editorWebBrowser.GetOcx();

			// define the default values of the properties
			_readOnly = false;
			_toolbarVisible = false;
			_enableVisualStyles = false;
			_toolbarDock = DockStyle.Bottom;
			_bodyText = DEFAULT_HTML_TEXT;
			_bodyHtml = DEFAULT_HTML_TEXT;
			_bodyBackColor = _defaultBackColor;
			_bodyForeColor = _defaultForeColor;
			_bodyFont = _defaultFont;
			_scrollBars = DisplayScrollBarOption.Auto;
			_imageDirectory = string.Empty;
			_htmlDirectory = string.Empty;
			_navigateWindow = NavigateActionOption.Default;
			_baseHref = string.Empty;
			_autoWordWrap = true;
			stylesheet = null;
			script = null;

			// define context menu state
			this.menuDocumentToolbar.Checked = true;
			this.menuDocumentScrollbar.Checked = true;
			this.menuDocumentWordwrap.Checked = true;

			// load the blank Html page to load the MsHtml object model
			BrowserCodeNavigate(BLANK_HTML_PAGE);

			// after load ensure document marked as editable
			this.ReadOnly = _readOnly;

		} //HTMLEditorControl


		// once an html docuemnt has been loaded define the internal values
		private void DefineBodyAttributes()
		{
			// define the body colors based on the new body html
			if (body.bgColor == null)
			{
				_bodyBackColor = _defaultBackColor;
			}
			else
			{
				_bodyBackColor = ColorTranslator.FromHtml((string)body.bgColor);
			}
			if (body.text == null)
			{
				_bodyForeColor = _defaultForeColor;
			}
			else
			{
				_bodyForeColor = ColorTranslator.FromHtml((string)body.text);
			}

			// define the font object based on current font of new document
			// deafult used unless a style on the body modifies the value
			HtmlStyle bodyStyle = body.style;
			if (bodyStyle != null)
			{
				string fontName = _bodyFont.Name;
				HtmlFontSize fontSize = _bodyFont.Size;
				bool fontBold = _bodyFont.Bold;
				bool fontItalic = _bodyFont.Italic;
				bool fontUnderline = _bodyFont.Underline;
				// define the font name if defined in the style
				if (bodyStyle.fontFamily != null) fontName = bodyStyle.fontFamily;
				if (bodyStyle.fontSize != null) fontSize = HtmlFontConversion.StyleSizeToHtml(bodyStyle.fontSize.ToString());
				if (bodyStyle.fontWeight != null) fontBold = HtmlFontConversion.IsStyleBold(bodyStyle.fontWeight);
				if (bodyStyle.fontStyle != null) fontItalic = HtmlFontConversion.IsStyleItalic(bodyStyle.fontStyle);
				fontUnderline = bodyStyle.textDecorationUnderline;
				// define the new font object and set the property
				_bodyFont = new HtmlFontProperty(fontName, fontSize, fontBold, fontItalic, fontUnderline);
				this.BodyFont = _bodyFont;
			}

			// define the content based on the current value
			this.ReadOnly = _readOnly;
			this.ScrollBars = _scrollBars;
			this.AutoWordWrap = _autoWordWrap;

		} //DefineBodyAttributes