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/*****************************************************************************
* Copyright (c) 2011 CEA LIST.
*
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.table.menu.providers;
/*****************************************************************************
* Copyright (c) 2010 CEA LIST.
*
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - Initial API and implementation
*
*****************************************************************************/
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.papyrus.diagram.common.providers.AbstractActionStateSourceProvider;
import org.eclipse.papyrus.table.menu.handler.AddToCurrentTableHandler;
import org.eclipse.ui.ISources;
/**
* This class provides the state of the Handlers. It's used to refresh
* the status of these Handlers in the menu. (in toolbar and popup, it's not needed)
*
* To get the status, we listen the selection service AND the part service!
* The part service is used to know if the selection is in the Model Explorer or not!
* When the selection is not in the model explorer, the handlers listening the variable need to be disabled
*/
public class HandlerStateSourceProvider extends AbstractActionStateSourceProvider {
/**
* The names of the variable to check.
*/
public static final String ADD_TO_TABLE = "addToOpenedTable"; //$NON-NLS-1$
/**
*
* Constructor.
*
*/
public HandlerStateSourceProvider() {
super();
currentState.put(ADD_TO_TABLE, DISABLED);
}
/**
*
* @see org.eclipse.ui.ISourceProvider#getProvidedSourceNames()
*
* @return
*/
@Override
public String[] getProvidedSourceNames() {
return new String[]{ ADD_TO_TABLE };
}
/**
*
* @see org.eclipse.papyrus.diagram.common.providers.AbstractActionStateSourceProvider#refreshActions()
*
*/
@Override
protected void refreshActions() {
refresh(ADD_TO_TABLE, new AddToCurrentTableHandler());
}
/**
* Refresh the state of the handlers
*
* @param key
* the key used to refresh the handler status
* @param handler
* the handler to refresh
*/
protected void refresh(String key, AbstractHandler handler) {
String oldState = currentState.get(key);
String newState = (test(handler) ? ENABLED : DISABLED);
if(oldState != newState) {
currentState.put(key, newState);
fireSourceChanged(ISources.WORKBENCH, key, newState);
}
}
/**
*
* @param handler
* the handler to refresh
* @return
* <code>true</code> if the status of the handler is enabled
*/
protected boolean test(AbstractHandler handler) {
return handler.isEnabled();
}
}
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