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Copyright (c) 2010 Daniel Murphy Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Created at 2:20:29 PM, Apr 5, 2010
package com.dmurph.mvc;

This interface allows checking to see if an object is changed (is "dirty"), and reverting changes back to when the object wasn't dirty.

Author(s):
Daniel Murphy
public interface IDirtyable {

Returns:
if the object is dirty, if it was changed since the last time setDirty(boolean) was called with false.
	public boolean isDirty();

Sets if the model is dirty or not. If called with false, the clean objects are cloned from the current working objects. Equivalent of saving the model. Basically, when revert() is called it will revert to when setDirty(false) was called.

Parameters:
argDirty true to make the object dirty, false to save the dirty values in the object
Returns:
the previous dirty value
	public boolean setDirty(boolean argDirty);

Reverts the dirty changes. The model should not be dirty after this call.

Returns:
if the model was dirty previously
	public boolean revert();
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