com.rcpcompany.uibindings.internal.observables.properties.MySelectionProviderSingleSelectionProperty.java Source code

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Here is the source code for com.rcpcompany.uibindings.internal.observables.properties.MySelectionProviderSingleSelectionProperty.java

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/*******************************************************************************
 * Copyright (c) 2006-2013 The RCP Company and others.
 * 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:
 *     The RCP Company - initial API and implementation
 *******************************************************************************/
package com.rcpcompany.uibindings.internal.observables.properties;

import org.eclipse.core.databinding.property.INativePropertyListener;
import org.eclipse.core.databinding.property.ISimplePropertyListener;
import org.eclipse.jface.databinding.viewers.ViewerValueProperty;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.Viewer;

/**
 * 
 */
public class MySelectionProviderSingleSelectionProperty extends ViewerValueProperty {
    @Override
    public Object getValueType() {
        return null;
    }

    @Override
    protected Object doGetValue(Object source) {
        final ISelection selection = ((ISelectionProvider) source).getSelection();
        if (selection instanceof IStructuredSelection)
            return ((IStructuredSelection) selection).getFirstElement();
        return null;
    }

    @Override
    protected void doSetValue(Object source, Object value) {
        final IStructuredSelection selection = value == null ? StructuredSelection.EMPTY
                : new StructuredSelection(value);
        if (source instanceof Viewer) {
            ((Viewer) source).setSelection(selection, true);
        } else {
            ((ISelectionProvider) source).setSelection(selection);
        }
    }

    @Override
    public INativePropertyListener adaptListener(ISimplePropertyListener listener) {
        return new MySelectionChangedListener(this, listener);
    }

    @Override
    public String toString() {
        return "ISelectionProvider.selection"; //$NON-NLS-1$
    }
}