org.bonitasoft.studio.common.jface.DataStyledTreeLabelProvider.java Source code

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Here is the source code for org.bonitasoft.studio.common.jface.DataStyledTreeLabelProvider.java

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/**
 * Copyright (C) 2012 BonitaSoft S.A.
 * BonitaSoft, 31 rue Gustave Eiffel - 38000 Grenoble
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2.0 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.bonitasoft.studio.common.jface;

import java.util.Set;

import org.bonitasoft.studio.common.Messages;
import org.bonitasoft.studio.common.emf.tools.ModelHelper;
import org.bonitasoft.studio.model.process.Data;
import org.bonitasoft.studio.model.process.JavaObjectData;
import org.eclipse.core.databinding.observable.map.IMapChangeListener;
import org.eclipse.core.databinding.observable.map.IObservableMap;
import org.eclipse.core.databinding.observable.map.MapChangeEvent;
import org.eclipse.emf.edit.provider.ComposedAdapterFactory;
import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider;
import org.eclipse.jface.preference.JFacePreferences;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.LabelProviderChangedEvent;
import org.eclipse.jface.viewers.StyledCellLabelProvider;
import org.eclipse.jface.viewers.StyledString;
import org.eclipse.jface.viewers.StyledString.Styler;
import org.eclipse.jface.viewers.ViewerCell;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.TextStyle;

/**
 * @author Romain Bioteau
 *
 */
public class DataStyledTreeLabelProvider extends StyledCellLabelProvider implements ILabelProvider {

    private final IMapChangeListener mapChangeListener = new IMapChangeListener() {
        @Override
        public void handleMapChange(MapChangeEvent event) {
            Set<?> affectedElements = event.diff.getChangedKeys();
            if (!affectedElements.isEmpty()) {
                LabelProviderChangedEvent newEvent = new LabelProviderChangedEvent(DataStyledTreeLabelProvider.this,
                        affectedElements.toArray());
                fireLabelProviderChanged(newEvent);
            }
        }
    };
    private Styler italicGrey;
    private AdapterFactoryLabelProvider imageProvider;

    public DataStyledTreeLabelProvider() {
        super();
        imageProvider = new AdapterFactoryLabelProvider(
                new ComposedAdapterFactory(ComposedAdapterFactory.Descriptor.Registry.INSTANCE));
        initStyle();
    }

    private void initStyle() {
        italicGrey = new StyledString.Styler() {
            @Override
            public void applyStyles(TextStyle textStyle) {
                textStyle.font = BonitaStudioFontRegistry.getTransientDataFont();
                textStyle.foreground = JFaceResources.getColorRegistry().get(JFacePreferences.QUALIFIER_COLOR);
            }
        };
    }

    public DataStyledTreeLabelProvider(int style) {
        super(style);
        initStyle();
    }

    public DataStyledTreeLabelProvider(IObservableMap... attributeMaps) {
        for (int i = 0; i < attributeMaps.length; i++) {
            attributeMaps[i].addMapChangeListener(mapChangeListener);
        }
        initStyle();
    }

    @Override
    public String getToolTipText(Object element) {
        return null;
    }

    @Override
    public void update(ViewerCell cell) {
        if (cell.getElement() instanceof Data) {
            Data d = (Data) cell.getElement();
            StyledString styledString = new StyledString();

            String decoration = " -- " + getTypeLabel(d);
            if (d.isTransient()) {
                styledString.append(d.getName(), italicGrey);
            } else {
                styledString.append(d.getName(), null);
            }
            styledString.append(decoration, StyledString.DECORATIONS_STYLER);
            if (d.getDefaultValue() != null && d.getDefaultValue().getName() != null
                    && !d.getDefaultValue().getName().isEmpty()) {
                String content = d.getDefaultValue().getName();
                content = Messages.defaultValue + ": " + content.replaceAll("\n", " ");
                styledString.append(" -- ", StyledString.DECORATIONS_STYLER);
                styledString.append(content, StyledString.QUALIFIER_STYLER);
            }

            cell.setText(styledString.getString());
            cell.setImage(getImage(d));
            cell.setStyleRanges(styledString.getStyleRanges());
        }
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.eclipse.jface.viewers.ILabelProvider#getImage(java.lang.Object)
     */
    @Override
    public Image getImage(Object element) {
        return imageProvider.getImage(element);
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
     */
    @Override
    public String getText(Object element) {
        // only for filtered Tree
        return ((Data) element).getName();
    }

    private String getTypeLabel(Data element) {
        StringBuilder builder = new StringBuilder();
        if (element.isMultiple()) {
            builder.append("List<"); //$NON-NLS-1$
        }
        if (element instanceof JavaObjectData) {
            builder.append(((JavaObjectData) element).getClassName());
        } else if (element.getDataType() == null || element.getDataType().getName() == null) {
            builder.append("?");
        } else {
            builder.append(ModelHelper.getDataTypeNLLabel(element.getDataType().getName()));
        }
        if (element.isMultiple()) {
            builder.append(">"); //$NON-NLS-1$
        }
        return builder.toString();
    }
}