de.walware.statet.rtm.base.ui.rexpr.RExprLabelProvider.java Source code

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Here is the source code for de.walware.statet.rtm.base.ui.rexpr.RExprLabelProvider.java

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/*=============================================================================#
 # Copyright (c) 2012-2014 Stephan Wahlbrink (WalWare.de) 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:
 #     Stephan Wahlbrink - initial API and implementation
 #=============================================================================*/

package de.walware.statet.rtm.base.ui.rexpr;

import java.util.List;

import org.eclipse.jface.viewers.CellLabelProvider;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ViewerCell;
import org.eclipse.swt.graphics.Image;

import de.walware.statet.rtm.rtdata.types.RExpr;
import de.walware.statet.rtm.rtdata.types.RTypedExpr;

public class RExprLabelProvider extends CellLabelProvider implements ILabelProvider {

    private final List<RExprTypeUIAdapter> fUIAdapters;

    public RExprLabelProvider(final List<RExprTypeUIAdapter> uiAdapters) {
        fUIAdapters = uiAdapters;
    }

    private RExprTypeUIAdapter getAdapter(final String typeKey) {
        for (final RExprTypeUIAdapter uiAdapter : fUIAdapters) {
            if (uiAdapter.getType().getTypeKey() == typeKey) {
                return uiAdapter;
            }
        }
        return null;
    }

    @Override
    public Image getImage(final Object element) {
        if (element instanceof RTypedExpr) {
            final RExprTypeUIAdapter uiAdapter = getAdapter(((RTypedExpr) element).getTypeKey());
            if (uiAdapter != null) {
                return uiAdapter.getImage();
            }
        }
        return null;
    }

    @Override
    public String getText(final Object element) {
        if (element instanceof RExpr) {
            return ((RExpr) element).getExpr();
        }
        return ""; //$NON-NLS-1$
    }

    @Override
    public void update(final ViewerCell cell) {
        final Object element = cell.getElement();
        cell.setImage(getImage(element));
        cell.setText(getText(element));
    }

}