org.eclipse.emf.cdo.ui.CDOLabelProvider.java Source code

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Here is the source code for org.eclipse.emf.cdo.ui.CDOLabelProvider.java

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/***************************************************************************
 * Copyright (c) 2004 - 2008 Eike Stepper, Germany.
 * 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:
 *    Eike Stepper - initial API and implementation
 **************************************************************************/
package org.eclipse.emf.cdo.ui;

import org.eclipse.emf.cdo.CDOView;
import org.eclipse.emf.cdo.common.revision.CDORevision;
import org.eclipse.emf.cdo.internal.ui.bundle.OM;

import org.eclipse.emf.internal.cdo.InternalCDOObject;
import org.eclipse.emf.internal.cdo.util.FSMUtil;

import org.eclipse.net4j.util.ObjectUtil;
import org.eclipse.net4j.util.StringUtil;
import org.eclipse.net4j.util.ui.UIUtil;

import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider;

import org.eclipse.jface.viewers.IColorProvider;
import org.eclipse.jface.viewers.IFontProvider;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;

import java.text.MessageFormat;

/**
 * @author Eike Stepper
 */
public class CDOLabelProvider extends AdapterFactoryLabelProvider implements IColorProvider, IFontProvider {
    public static final String[] DECORATION_PROPOSALS = { "${element}", "${id}", "${state}", "${created}",
            "${revised}" };

    public static final String DEFAULT_DECORATION = DECORATION_PROPOSALS[0] + " [" + DECORATION_PROPOSALS[1] + "]";

    public static final String NO_DECORATION = DECORATION_PROPOSALS[0];

    private static final String[] DECORATION_ARGS = { "{0}", "{1}", "{2}", "{3,date} {3,time}",
            "{4,date} {4,time}" };

    private static final Color GRAY = UIUtil.getDisplay().getSystemColor(SWT.COLOR_GRAY);

    private static final Color RED = UIUtil.getDisplay().getSystemColor(SWT.COLOR_RED);

    private Font bold;

    private CDOView view;

    private TreeViewer viewer;

    private String pattern;

    public CDOLabelProvider(AdapterFactory adapterFactory, CDOView view, TreeViewer viewer) {
        super(adapterFactory);
        this.view = view;
        this.viewer = viewer;
        bold = UIUtil.getBoldFont(viewer.getControl());

        pattern = OM.PREF_LABEL_DECORATION.getValue();
        if (ObjectUtil.equals(pattern, NO_DECORATION)) {
            pattern = null;
        } else {
            pattern = StringUtil.replace(pattern, DECORATION_PROPOSALS, DECORATION_ARGS);
        }
    }

    public CDOView getView() {
        return view;
    }

    public TreeViewer getViewer() {
        return viewer;
    }

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

    @Override
    public void notifyChanged(final Notification notification) {
        super.notifyChanged(notification);

        try {
            viewer.getControl().getDisplay().syncExec(new Runnable() {
                public void run() {
                    try {
                        viewer.refresh(notification.getNotifier(), true);
                    } catch (Exception ignore) {
                    }
                }
            });
        } catch (Exception ignore) {
        }
    }

    @Override
    public String getText(Object object) {
        return decorateText(super.getText(object), object);
    }

    @Override
    public String getColumnText(Object object, int columnIndex) {
        return decorateText(super.getColumnText(object, columnIndex), object);
    }

    public Color getBackground(Object object) {
        return null;
    }

    public Color getForeground(Object object) {
        try {
            InternalCDOObject cdoObject = FSMUtil.adapt(object, view);
            switch (cdoObject.cdoState()) {
            case PROXY:
                return GRAY;

            case CONFLICT:
                return RED;
            }
        } catch (RuntimeException ignore) {
        }

        return null;
    }

    public Font getFont(Object object) {
        try {
            InternalCDOObject cdoObject = FSMUtil.adapt(object, view);
            switch (cdoObject.cdoState()) {
            case NEW:
            case DIRTY:
            case CONFLICT:
                return bold;
            }
        } catch (RuntimeException ignore) {
        }

        return null;
    }

    protected String decorateText(String text, Object object) {
        try {
            if (pattern != null) {
                InternalCDOObject obj = FSMUtil.adapt(object, view);
                CDORevision rev = obj.cdoRevision();
                long created = rev == null ? CDORevision.UNSPECIFIED_DATE : rev.getCreated();
                long revised = rev == null ? CDORevision.UNSPECIFIED_DATE : rev.getRevised();
                text = MessageFormat.format(pattern, text, obj.cdoID(), obj.cdoState(), created, revised);
            }
        } catch (RuntimeException ignore) {
        }

        return text;
    }
}