org.spotter.eclipse.ui.providers.PropertiesLabelProvider.java Source code

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Here is the source code for org.spotter.eclipse.ui.providers.PropertiesLabelProvider.java

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/**
 * Copyright 2014 SAP AG
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.spotter.eclipse.ui.providers;

import org.eclipse.jface.resource.FontRegistry;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.viewers.CellLabelProvider;
import org.eclipse.jface.viewers.ViewerCell;
import org.eclipse.swt.graphics.Font;
import org.lpe.common.config.ConfigParameterDescription;
import org.spotter.eclipse.ui.model.AbstractPropertyItem;
import org.spotter.eclipse.ui.util.AbstractNameFormatter;
import org.spotter.eclipse.ui.viewers.PropertiesGroupViewer;

/**
 * Label provider for properties table. This label provider expects objects of
 * type {@link AbstractPropertyItem}.
 * 
 * @author Denis Knoepfle
 * 
 */
public class PropertiesLabelProvider extends CellLabelProvider {

    private static final int TOOLTIP_DISPLAY_TIME = 3000;
    private static final int TOOLTIP_DISPLAY_DELAY_TIME = 500;

    private static final FontRegistry FONT_REGISTRY = new FontRegistry();
    private static final Font NORMAL_FONT = FONT_REGISTRY.get(JFaceResources.DEFAULT_FONT);
    private static final Font ITALIC_FONT = FONT_REGISTRY.getItalic(JFaceResources.DEFAULT_FONT);

    private final PropertiesGroupViewer propertiesGroupViewer;

    /**
     * Create a new label provider for the given properties viewer.
     * 
     * @param propertiesGroupViewer
     *            The properties viewer
     */
    public PropertiesLabelProvider(PropertiesGroupViewer propertiesGroupViewer) {
        super();
        this.propertiesGroupViewer = propertiesGroupViewer;
    }

    @Override
    public String getToolTipText(Object element) {
        String tooltip = null;
        if (element != null && element instanceof AbstractPropertyItem) {
            tooltip = ((AbstractPropertyItem) element).getToolTip();
        }
        return tooltip;
    }

    @Override
    public boolean useNativeToolTip(Object object) {
        return true;
    }

    @Override
    public int getToolTipTimeDisplayed(Object object) {
        return TOOLTIP_DISPLAY_TIME;
    }

    @Override
    public int getToolTipDisplayDelayTime(Object object) {
        return TOOLTIP_DISPLAY_DELAY_TIME;
    }

    @Override
    public void update(ViewerCell cell) {
        Object element = cell.getElement();
        if (element != null && element instanceof AbstractPropertyItem) {
            AbstractPropertyItem tableItem = (AbstractPropertyItem) element;
            ConfigParameterDescription desc = tableItem.getConfigParameterDescription();
            boolean mandatory = desc == null ? true : desc.isMandatory();
            cell.setFont(mandatory ? NORMAL_FONT : ITALIC_FONT);

            switch (cell.getColumnIndex()) {
            case 0:
                AbstractNameFormatter formatter = propertiesGroupViewer.getNameFormatter();
                String name = tableItem.getName();
                cell.setText(formatter == null ? name : formatter.format(name));
                break;
            case 1:
                cell.setText(tableItem.getValue());
                break;
            default:
                break;
            }
        }
    }

}