org.eclipse.team.ui.mapping
Class SaveableCompareModel

java.lang.Object
  org.eclipse.team.ui.mapping.SaveableCompareModel

All Implemented Interfaces:

ISaveableCompareModel, ISaveableModel

public abstract class SaveableCompareModel

extends Object

implements ISaveableCompareModel

A saveable model is used to buffer changes made when comparing or merging a model. A buffer can be shared between multiple typed elements within a comparison. The saveable model is used by the comparison container in order to determine when a save is required.

Clients may subclass this class.

Since:

3.2

Field Summary

Fields inherited from interface org.eclipse.team.ui.mapping.ISaveableCompareModel

PROP_DIRTY

Constructor Summary

SaveableCompareModel()

Method Summary

void	addPropertyListener(IPropertyListener listener) Add a property change listener.
void	doRevert(IProgressMonitor monitor) Revert any changes in the buffer back to the last saved state.
void	doSave(IProgressMonitor monitor) Saves the contents of this model.
protected void	firePropertyChange(int property) Fire a property change event for this buffer.
protected void	handleException(CoreException exception) Handle an exception that occurred during a save.
boolean	isDirty() Returns whether the contents of this model have changed since the last save operation.
protected abstract void	performRevert(IProgressMonitor monitor) Method invoked from doRevert(IProgressMonitor) to discard the changes in the buffer.
protected abstract void	performSave(IProgressMonitor monitor) Method invoked from doSave(IProgressMonitor) to write out the buffer.
void	removePropertyListener(IPropertyListener listener) Remove a property change listener.
protected void	setDirty(boolean dirty) Set the dirty state of this buffer.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.eclipse.ui.ISaveableModel

getImageDescriptor, getName, getToolTipText

Constructor Detail

SaveableCompareModel

public SaveableCompareModel()

Method Detail

isDirty

public boolean isDirty()

Description copied from interface: ISaveableModel

Returns whether the contents of this model have changed since the last save operation.

Note: this method is called frequently, for example by actions to determine their enabled status.

Specified by:

isDirty in interface ISaveableModel

Returns:

true if the contents have been modified and need saving, and false if they have not changed since the last save

doSave

public void doSave(IProgressMonitor monitor)
            throws CoreException

Description copied from interface: ISaveableModel

Saves the contents of this model.

If the save is cancelled through user action, or for any other reason, the part should invoke setCancelled on the IProgressMonitor to inform the caller.

This method is long-running; progress and cancellation are provided by the given progress monitor.

Specified by:

doSave in interface ISaveableModel

Parameters:

monitor - the progress monitor

Throws:

CoreException - if the save fails; it is the caller's responsibility to report the failure to the user

doRevert

public void doRevert(IProgressMonitor monitor)

Description copied from interface: ISaveableCompareModel

Revert any changes in the buffer back to the last saved state.

Specified by:

doRevert in interface ISaveableCompareModel

Parameters:

monitor - a progress monitor on null if progress feedback is not required

addPropertyListener

public void addPropertyListener(IPropertyListener listener)

Description copied from interface: ISaveableCompareModel

Add a property change listener. Adding a listener that is allready registered has no effect.

Specified by:

addPropertyListener in interface ISaveableCompareModel

Parameters:

listener - the listener

removePropertyListener

public void removePropertyListener(IPropertyListener listener)

Description copied from interface: ISaveableCompareModel

Remove a property change listener. Removing a listener that is not registered has no effect.

Specified by:

removePropertyListener in interface ISaveableCompareModel

Parameters:

listener - the listener

setDirty

protected void setDirty(boolean dirty)

Set the dirty state of this buffer. If the state has changed, a property change event will be fired.

Parameters:

dirty - the dirty state

firePropertyChange

protected void firePropertyChange(int property)

Fire a property change event for this buffer.

Parameters:

property - the property that changed

performSave

protected abstract void performSave(IProgressMonitor monitor)
                             throws CoreException

Method invoked from doSave(IProgressMonitor) to write out the buffer. By default, this method invokes doSave on the buffers savable model.

Parameters:

monitor - a progress monitor

Throws:

CoreException - if errors occur

performRevert

protected abstract void performRevert(IProgressMonitor monitor)

Method invoked from doRevert(IProgressMonitor) to discard the changes in the buffer.

Parameters:

monitor - a progress monitor

handleException

protected void handleException(CoreException exception)

Handle an exception that occurred during a save.

Parameters:

exception - the exception