ExistingModulesFilter.java

/*
  ExistingModulesFilter.java

  (c) 2013 Ed Swartz

  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
 */
package v9t9.gui.client.swt.shells.modules;

import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;

import v9t9.common.modules.IModule;

/**
 * This filter only allows through module entries for
 * which all the ROM segments exist.
 * @author ejs
 *
 */
class ExistingModulesFilter extends ViewerFilter {

	/**
	 * 
	 */
	private final ModuleSelector moduleSelector;
	/**
	 * @param moduleSelector
	 */
	ExistingModulesFilter(ModuleSelector moduleSelector) {
		this.moduleSelector = moduleSelector;
	}
	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ViewerFilter#isFilterProperty(java.lang.Object, java.lang.String)
	 */
	@Override
	public boolean isFilterProperty(Object element, String property) {
		return true;
	}
	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ViewerFilter#select(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
	 */
	@Override
	public boolean select(Viewer viewer, Object parentElement,
			Object element) {
		if (this.moduleSelector.isShowMissingModules() || !(element instanceof IModule))
			return true;
		
		IModule module = (IModule) element;
		return this.moduleSelector.isModuleLoadable(module);
	}
	
}