sernet.verinice.rcp.search.SearchComboViewer.java Source code

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Here is the source code for sernet.verinice.rcp.search.SearchComboViewer.java

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/*******************************************************************************
 * Copyright (c) 2015 benjamin.
 *
 * This program is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation, either version 3
 * 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.
 * If not, see <http://www.gnu.org/licenses/>.
 *
 * Contributors:
 *     Benjamin Weienfels <bw[at]sernet[dot]de> - initial API and implementation
 ******************************************************************************/
package sernet.verinice.rcp.search;

import org.eclipse.jface.viewers.ComboViewer;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerComparator;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;

import sernet.verinice.model.search.VeriniceSearchResult;
import sernet.verinice.model.search.VeriniceSearchResultTable;

/**
 * Viewer for a search result.
 *
 * Shows a set of available {@link VeriniceSearchResultTable}. Displays the
 * {@link VeriniceSearchResultTable} with the most hits first.
 *
 * @author Benjamin Weienfels <bw[at]sernet[dot]de>
 *
 */
public class SearchComboViewer extends ComboViewer
        implements IStructuredContentProvider, ISelectionChangedListener {

    private SearchView searchView;

    public SearchComboViewer(Composite searchComboComposite, SearchView searchView) {

        super(searchComboComposite, SWT.DROP_DOWN | SWT.READ_ONLY | SWT.V_SCROLL | SWT.H_SCROLL);

        this.searchView = searchView;
        this.setContentProvider(this);

        this.setLabelProvider(new LabelProvider() {
            @Override
            public String getText(Object element) {
                VeriniceSearchResultTable veriniceSearchResult = (VeriniceSearchResultTable) element;
                return getLabelText(veriniceSearchResult);
            }

            private String getLabelText(VeriniceSearchResultTable result) {
                StringBuilder sb = new StringBuilder();
                sb.append(result.getEntityName()).append(" (") //$NON-NLS-1$
                        .append(result.getHits());
                if (result.getHits() >= result.getLimit()) {
                    sb.append(", ") //$NON-NLS-1$
                            .append(Messages.SearchComboViewer_2);
                }
                ;
                sb.append(")").toString(); //$NON-NLS-1$
                return sb.toString();
            }
        });

        this.addSelectionChangedListener(this);
        this.setComparator(setSearchViewerComparator());
    }

    private ViewerComparator setSearchViewerComparator() {

        return new ViewerComparator() {

            VeriniceSearchResultComparator comparator = new VeriniceSearchResultComparator();

            public int compare(Viewer viewer, Object object1, Object object2) {

                if (object1 instanceof VeriniceSearchResultTable && object2 instanceof VeriniceSearchResultTable) {

                    VeriniceSearchResultTable vResultObject1 = (VeriniceSearchResultTable) object1;
                    VeriniceSearchResultTable vResultObject2 = (VeriniceSearchResultTable) object2;

                    return comparator.compare(vResultObject1, vResultObject2);
                } else {
                    return compare(viewer, object1, object2);
                }
            }
        };
    }

    /*
     * (non-Javadoc)
     *
     * @see org.eclipse.jface.viewers.IContentProvider#dispose()
     */
    @Override
    public void dispose() {
        // TODO Auto-generated method stub

    }

    /*
     * (non-Javadoc)
     *
     * @see
     * org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface
     * .viewers.Viewer, java.lang.Object, java.lang.Object)
     */
    @Override
    public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
    }

    /*
     * (non-Javadoc)
     *
     * @see
     * org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java
     * .lang.Object)
     */
    @Override
    public Object[] getElements(Object inputElement) {
        if (inputElement instanceof VeriniceSearchResult) {
            VeriniceSearchResult veriniceSearchResult = (VeriniceSearchResult) inputElement;
            VeriniceSearchResultTable[] input = new VeriniceSearchResultTable[veriniceSearchResult
                    .getAllVeriniceSearchTables().size()];
            return veriniceSearchResult.getAllVeriniceSearchTables().toArray(input);
        } else {
            return new VeriniceSearchResultTable[0];
        }
    }

    /*
     * (non-Javadoc)
     *
     * @see
     * org.eclipse.jface.viewers.ISelectionChangedListener#selectionChanged(
     * org.eclipse.jface.viewers.SelectionChangedEvent)
     */
    @Override
    public void selectionChanged(SelectionChangedEvent event) {
        if (!event.getSelection().isEmpty()) {
            VeriniceSearchResultTable veriniceSearchResultTable = (VeriniceSearchResultTable) ((StructuredSelection) event
                    .getSelection()).getFirstElement();
            searchView.setTableViewer(veriniceSearchResultTable);
            searchView.enableExport2CSVAction(true);
        } else {
            VeriniceSearchResultTable firstResult = (VeriniceSearchResultTable) getElementAt(0);
            searchView.setTableViewer(firstResult);
            searchView.enableExport2CSVAction(true);
        }
    }
}