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// Copyright (c) 2008 MySQL AB, 2008-2009 Sun Microsystems, Inc.
//
// MySQL Connector/NET is licensed under the terms of the GPLv2
// <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most
// MySQL Connectors. There are special exceptions to the terms and
// conditions of the GPLv2 as it is applied to this software, see the
// FLOSS License Exception
// <http://www.mysql.com/about/legal/licensing/foss-exception.html>.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published
// by the Free Software Foundation; version 2 of the License.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
using Microsoft.VisualStudio.TextManager.Interop;
using Microsoft.VisualStudio.OLE.Interop;
using System;
using Microsoft.VisualStudio;
using Microsoft.VisualStudio.Package;
using System.Runtime.InteropServices;
namespace MySql.Data.VisualStudio.Editors
{
internal class TextBufferEditor
{
private bool noContent;
private Microsoft.VisualStudio.OLE.Interop.IServiceProvider psp;
public TextBufferEditor(System.IServiceProvider sp)
{
psp = sp as Microsoft.VisualStudio.OLE.Interop.IServiceProvider;
noContent = true;
CreateCodeEditor();
}
private IVsCodeWindow _codeWindow;
public IVsCodeWindow CodeWindow
{
get { return _codeWindow; }
private set { _codeWindow = value; }
}
private IVsTextBuffer _textBuffer;
public IVsTextBuffer TextBuffer
{
get { return _textBuffer; }
private set { _textBuffer = value; }
}
private void CreateCodeEditor()
{
Guid clsidTextBuffer = typeof(VsTextBufferClass).GUID;
Guid iidTextBuffer = VSConstants.IID_IUnknown;
TextBuffer = (IVsTextBuffer)MySqlDataProviderPackage.Instance.CreateInstance(
ref clsidTextBuffer,
ref iidTextBuffer,
typeof(object));
if (TextBuffer == null)
throw new Exception("Failed to create core editor");
// first we need to site our buffer
IObjectWithSite textBufferSite = TextBuffer as IObjectWithSite;
if (textBufferSite != null)
{
textBufferSite.SetSite(psp);
}
// then we need to tell our buffer not to attempt to autodetect the
// language settings
IVsUserData userData = TextBuffer as IVsUserData;
Guid g = EditorFactory.GuidVSBufferDetectLangSid;
int result = userData.SetData(ref g, false);
Guid clsidCodeWindow = typeof(VsCodeWindowClass).GUID;
Guid iidCodeWindow = typeof(IVsCodeWindow).GUID;
IVsCodeWindow pCodeWindow = (IVsCodeWindow)MySqlDataProviderPackage.Instance.CreateInstance(
ref clsidCodeWindow,
ref iidCodeWindow,
typeof(IVsCodeWindow));
if (pCodeWindow == null)
throw new Exception("Failed to create core editor");
// Give the text buffer to the code window.
// We are giving up ownership of the text buffer!
pCodeWindow.SetBuffer((IVsTextLines)TextBuffer);
CodeWindow = pCodeWindow;
}
public bool Dirty
{
get
{
uint flags;
TextBuffer.GetStateFlags(out flags);
return (flags & (uint)BUFFERSTATEFLAGS.BSF_MODIFIED) != 0;
}
set
{
uint flags;
TextBuffer.GetStateFlags(out flags);
if (value)
flags |= (uint)BUFFERSTATEFLAGS.BSF_MODIFIED;
else
flags &= ~(uint)BUFFERSTATEFLAGS.BSF_MODIFIED;
TextBuffer.SetStateFlags(flags);
}
}
public string Text
{
get
{
IVsTextLines lines = (IVsTextLines)TextBuffer;
int lineCount, lineLength;
string text;
lines.GetLineCount(out lineCount);
lines.GetLengthOfLine(lineCount - 1, out lineLength);
lines.GetLineText(0, 0, lineCount - 1, lineLength, out text);
return text;
}
set
{
if (noContent)
Initialize(value);
else
Replace(value);
noContent = false;
}
}
private void Initialize(string value)
{
IVsTextLines lines = (IVsTextLines)TextBuffer;
lines.InitializeContent(value, value.Length);
}
private void Replace(string value)
{
int endLine, endCol;
IVsTextLines lines = (IVsTextLines)TextBuffer;
lines.GetLastLineIndex(out endLine, out endCol);
IntPtr pText = Marshal.StringToCoTaskMemAuto(value);
try
{
lines.ReplaceLines(0, 0, endLine, endCol, pText, value.Length, null);
}
finally
{
Marshal.FreeCoTaskMem(pText);
}
}
}
}
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