org.eclipse.scada.da.ui.summary.explorer.SummaryExplorerViewPart.java Source code

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Here is the source code for org.eclipse.scada.da.ui.summary.explorer.SummaryExplorerViewPart.java

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/*******************************************************************************
 * Copyright (c) 2012, 2014 TH4 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:
 *     TH4 SYSTEMS GmbH - initial API and implementation
 *     Jens Reimann - additional work
 *     IBH SYSTEMS GmbH - use Location.ROOT
 *******************************************************************************/
package org.eclipse.scada.da.ui.summary.explorer;

import java.util.LinkedList;
import java.util.List;

import org.eclipse.core.databinding.observable.Realm;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.jface.databinding.viewers.ObservableSetTreeContentProvider;
import org.eclipse.jface.databinding.viewers.TreeStructureAdvisor;
import org.eclipse.jface.viewers.ColumnWeightData;
import org.eclipse.jface.viewers.TableLayout;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.TreeViewerColumn;
import org.eclipse.scada.core.ui.styles.StateInformation.State;
import org.eclipse.scada.da.connection.provider.ConnectionService;
import org.eclipse.scada.da.core.Location;
import org.eclipse.scada.ui.databinding.ListeningStyledCellLabelProvider;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.part.ViewPart;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class SummaryExplorerViewPart extends ViewPart {

    final static Logger logger = LoggerFactory.getLogger(SummaryExplorerViewPart.class);

    public static final String VIEW_ID = "org.eclipse.scada.da.ui.summary.explorer.view";

    private ConnectionService connectionService;

    private TreeViewer viewer;

    private TreeNode input;

    private Realm realm;

    private final List<ListeningStyledCellLabelProvider> labelProviders = new LinkedList<ListeningStyledCellLabelProvider>();

    @Override
    public void createPartControl(final Composite parent) {
        this.realm = SWTObservables.getRealm(parent.getDisplay());

        this.viewer = new TreeViewer(parent, SWT.FULL_SELECTION);
        final ObservableSetTreeContentProvider contentProvider = new ObservableSetTreeContentProvider(
                new FactoryImpl(), new TreeStructureAdvisor() {
                });
        this.viewer.setContentProvider(contentProvider);
        this.viewer.getTree().setHeaderVisible(true);

        final TableLayout layout = new TableLayout();

        {
            final TreeViewerColumn col = new TreeViewerColumn(this.viewer, SWT.NONE);
            final ListeningStyledCellLabelProvider labelProvider = new NameLabelProviderImpl(
                    contentProvider.getRealizedElements());
            col.setLabelProvider(labelProvider);
            col.getColumn().setText("Name");
            layout.addColumnData(new ColumnWeightData(100));
            this.labelProviders.add(labelProvider);
        }

        for (final State state : State.values()) {
            final TreeViewerColumn col = new TreeViewerColumn(this.viewer, SWT.NONE);
            final ListeningStyledCellLabelProvider labelProvider = new StateLabelProviderImpl(
                    contentProvider.getRealizedElements(), state);
            col.setLabelProvider(labelProvider);
            col.getColumn().setText(state.name());
            layout.addColumnData(new ColumnWeightData(25));
            this.labelProviders.add(labelProvider);
        }

        this.viewer.getTree().setLayout(layout);
    }

    public void setConnectionService(final ConnectionService connectionService) {
        if (this.input != null) {
            this.viewer.setInput(null);
            this.input.dispose();
        }

        this.connectionService = connectionService;
        if (this.connectionService != null) {
            this.input = new TreeNode(this.realm, this.connectionService, Location.ROOT, null);
            this.viewer.setInput(this.input);
        }
    }

    @Override
    public void dispose() {
        for (final ListeningStyledCellLabelProvider labelProvider : this.labelProviders) {
            labelProvider.dispose();
        }

        if (this.input != null) {
            this.input.dispose();
            this.input = null;
        }
    }

    @Override
    public void setFocus() {
        this.viewer.getControl().setFocus();
    }

}