org.eclipse.scada.utils.ui.server.internal.app.TreeNodeLabelProvider.java Source code

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Here is the source code for org.eclipse.scada.utils.ui.server.internal.app.TreeNodeLabelProvider.java

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/*******************************************************************************
 * Copyright (c) 2014 IBH SYSTEMS GmbH 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:
 *     IBH SYSTEMS GmbH - initial API and implementation
 *******************************************************************************/
package org.eclipse.scada.utils.ui.server.internal.app;

import org.eclipse.core.databinding.observable.map.IObservableMap;
import org.eclipse.jface.databinding.viewers.ObservableMapLabelProvider;
import org.eclipse.jface.viewers.IFontProvider;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.scada.utils.ui.server.internal.TreeNode;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;

public class TreeNodeLabelProvider extends ObservableMapLabelProvider implements IFontProvider {
    private static final long serialVersionUID = 1L;

    private final TreeViewer viewer;

    private final Font font;

    private final Font defaultFont;

    public TreeNodeLabelProvider(final TreeViewer viewer, final IObservableMap... attributeMaps) {
        super(attributeMaps);
        this.viewer = viewer;

        this.defaultFont = viewer.getControl().getFont();

        final FontData[] fds = this.viewer.getControl().getFont().getFontData();
        for (final FontData fd : fds) {
            fd.setStyle(SWT.ITALIC);
        }
        this.font = new Font(this.viewer.getControl().getDisplay(), fds);
    }

    @Override
    public Font getFont(final Object element) {
        final TreeNode node = (TreeNode) element;
        if (node.isProviderSet()) {
            return this.defaultFont;
        } else {
            return this.font;
        }
    }

    @Override
    public String getText(final Object element) {
        final TreeNode node = (TreeNode) element;
        return node.getName();
    }

    @Override
    public void dispose() {
        super.dispose();
        this.font.dispose();
    }

}