HtmlEditor.cs :  » RSS-RDF » RSS-Feeder » RSSBlogAPI » C# / CSharp Open Source

// Copyright  2005 by Omar Al Zabir. All rights are reserved.
// 
// If you like this code then feel free to go ahead and use it.
// The only thing I ask is that you don't remove or alter my copyright notice.
//
// Your use of this software is entirely at your own risk. I make no claims or
// warrantees about the reliability or fitness of this code for any particular purpose.
// If you make changes or additions to this code please mark your code as being yours.
// 
// website http://www.oazabir.com, email OmarAlZabir@gmail.com, msn oazabir@hotmail.com
using System;
using System.Drawing;
using System.Diagnostics;
using System.Windows.Forms;
using System.Text;
using System.Text.RegularExpressions;

using mshtml;
using DHTMLEDLib;
using AxDHTMLEDLib;
using System.Collections;

namespace RSSBlogAPI{
  /// <summary>
  /// HTML Editor Control
  /// </summary>
  internal class HtmlEditor : AxDHTMLEdit
  {
    private ColorDialog _ColorSelectionDialog;
    
    public HtmlEditor()
    {
      this._ColorSelectionDialog = new ColorDialog();
    }

    #region Commands

    public void Bold()
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_BOLD, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }

    public void Underline()
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_UNDERLINE, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }

    public void Italic()
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_ITALIC, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }

    public void InsertHyperlink( )
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_HYPERLINK, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }

    public void InsertImage()
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_IMAGE, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }

    public void InsertImage( string url )
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_IMAGE, OLECMDEXECOPT.OLECMDEXECOPT_DONTPROMPTUSER, ref nullArg );
    }

    public void Cut()
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_CUT, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }
    
    public void Copy()
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_COPY, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }

    public void Paste()
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_PASTE, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }

    public void JustifyLeft()
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_JUSTIFYLEFT, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }

    public void JustifyCenter()
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_JUSTIFYCENTER, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }

    public void JustifyRight()
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_JUSTIFYRIGHT, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }

    public void JustifyFull()
    {
      string selection = this.SelectedHtml;
      Regex rx = new Regex( "<p[^>]*>", RegexOptions.IgnoreCase );
      selection = rx.Replace( selection, "<p align=\"justify\">" );
      this.SelectedHtml = selection;
    }

    public void Undo()
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_UNDO, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }

    public void Redo()
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_REDO, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }

    public void Indent()
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_INDENT, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }

    public void Outdent()
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_OUTDENT, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }

    public void OrderList()
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_ORDERLIST, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }

    public void UnorderList()
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_UNORDERLIST, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }

    public void RemoveFormat()
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_REMOVEFORMAT, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }

    public void RemoveLink()
    {
      object nullArg = null;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_UNLINK, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullArg );
    }

    public void SetColor()
    {
      if ( DialogResult.OK == this._ColorSelectionDialog.ShowDialog( this ) )
        SetColor( ColorTranslator.ToHtml( this._ColorSelectionDialog.Color ) );
    }

    public void SetColor( string htmlColor )
    {
      object arg = htmlColor;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_SETFORECOLOR, OLECMDEXECOPT.OLECMDEXECOPT_DONTPROMPTUSER, ref arg );
    }

    public void SetFont( string font )
    {
      object arg = font;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_SETFONTNAME, OLECMDEXECOPT.OLECMDEXECOPT_DONTPROMPTUSER, ref arg );
    }

    public void SetSize( int size )
    {
      object arg = size;
      this.ExecCommand( DHTMLEDITCMDID.DECMD_SETFONTSIZE, OLECMDEXECOPT.OLECMDEXECOPT_DONTPROMPTUSER, ref arg );
    }

    #endregion

    #region Selection Processing

    public string SelectedText
    {
      get
      {
        IHTMLSelectionObject selection = this.DOM.selection;
        if ( selection.type == "Text" )
        {
          IHTMLTxtRange range  = selection.createRange() as IHTMLTxtRange;
          range.select();
          return range.text;
        }

        return string.Empty;
      }
      set
      {
        IHTMLSelectionObject selection = this.DOM.selection;

        if ( selection.type != "Control" )
        {
          IHTMLTxtRange range  = selection.createRange() as IHTMLTxtRange;
          range.select();
          range.text = value;
        }
        else
        {
          IHTMLControlRange range = selection.createRange() as IHTMLControlRange;
          range.item(0).outerText = value;
        }
      }
    }

    public string SelectedHtml
    {
      get
      {
        IHTMLSelectionObject selection = this.DOM.selection;

        if ( selection.type == "Text" || selection.type == "None"  )
        {
          IHTMLTxtRange range  = selection.createRange() as IHTMLTxtRange;
          range.select();
          return range.htmlText;
        }
        else if ( selection.type == "Control" )
        {
          IHTMLControlRange range  = selection.createRange() as IHTMLControlRange;
          range.select();
          return range.item(0).outerHTML;
        }

        return string.Empty;
      }
      set
      {
        IHTMLSelectionObject selection = this.DOM.selection;

        if ( selection.type != "Control" )
        {
          IHTMLTxtRange range  = selection.createRange() as IHTMLTxtRange;
          range.select();
          range.pasteHTML( value );
        }
        else
        {
          IHTMLControlRange range = selection.createRange() as IHTMLControlRange;
          range.item(0).outerHTML = value;
        }
      }
    }

    #endregion
  }
}