mirror of
https://github.com/ShareX/ShareX.git
synced 2024-08-29 09:01:18 +12:00
84 lines
No EOL
2.8 KiB
C#
84 lines
No EOL
2.8 KiB
C#
/*
|
|
* Greenshot - a free and open source screenshot tool
|
|
* Copyright (C) 2007-2013 Thomas Braun, Jens Klingen, Robin Krom
|
|
*
|
|
* For more information see: http://getgreenshot.org/
|
|
* The Greenshot project is hosted on Sourceforge: http://sourceforge.net/projects/greenshot/
|
|
*
|
|
* 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, either version 1 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
using Greenshot.Drawing.Fields;
|
|
using Greenshot.Plugin.Drawing;
|
|
using System;
|
|
|
|
namespace Greenshot.Memento
|
|
{
|
|
/// <summary>
|
|
/// The ChangeFieldHolderMemento makes it possible to undo-redo an IDrawableContainer move
|
|
/// </summary>
|
|
public class ChangeFieldHolderMemento : IMemento
|
|
{
|
|
private IDrawableContainer drawableContainer;
|
|
private Field fieldToBeChanged;
|
|
private object oldValue;
|
|
|
|
public ChangeFieldHolderMemento(IDrawableContainer drawableContainer, Field fieldToBeChanged)
|
|
{
|
|
this.drawableContainer = drawableContainer;
|
|
this.fieldToBeChanged = fieldToBeChanged;
|
|
oldValue = fieldToBeChanged.Value;
|
|
}
|
|
|
|
public void Dispose()
|
|
{
|
|
Dispose(true);
|
|
GC.SuppressFinalize(this);
|
|
}
|
|
|
|
protected virtual void Dispose(bool disposing)
|
|
{
|
|
//if (disposing) { }
|
|
drawableContainer = null;
|
|
}
|
|
|
|
public bool Merge(IMemento otherMemento)
|
|
{
|
|
ChangeFieldHolderMemento other = otherMemento as ChangeFieldHolderMemento;
|
|
if (other != null)
|
|
{
|
|
if (other.drawableContainer.Equals(drawableContainer))
|
|
{
|
|
if (other.fieldToBeChanged.Equals(fieldToBeChanged))
|
|
{
|
|
// Match, do not store anything as the initial state is what we want.
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public IMemento Restore()
|
|
{
|
|
// Before
|
|
drawableContainer.Invalidate();
|
|
ChangeFieldHolderMemento oldState = new ChangeFieldHolderMemento(drawableContainer, fieldToBeChanged);
|
|
fieldToBeChanged.Value = oldValue;
|
|
// After
|
|
drawableContainer.Invalidate();
|
|
return oldState;
|
|
}
|
|
}
|
|
} |