org.eclipse.ui.ide.markers.compatibility.internal.SeverityAndDescriptionConfigurationArea.java Source code

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Here is the source code for org.eclipse.ui.ide.markers.compatibility.internal.SeverityAndDescriptionConfigurationArea.java

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package org.eclipse.ui.ide.markers.compatibility.internal;
/*******************************************************************************
 * Copyright (c) 2007 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 ******************************************************************************/

import org.eclipse.core.resources.IMarker;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.ui.ide.markers.compatibility.api.MarkerFieldFilter;
import org.eclipse.ui.ide.markers.compatibility.api.internal.MarkerMessages;

/**
 * SeverityAndDescriptionConfigurationArea is the configuration area for the
 * severity and description field.
 * 
 * @since 3.4
 * 
 */
public class SeverityAndDescriptionConfigurationArea extends DescriptionConfigurationArea {

    private int severities;
    private Button infoButton;
    private Button errorButton;
    private Button warningButton;

    /**
     * Create a new instance of the receiver.
     */
    public SeverityAndDescriptionConfigurationArea() {
        super();
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.ui.internal.provisional.views.markers.api.FilterConfigurationArea#apply(org.eclipse.ui.internal.provisional.views.markers.api.MarkerFieldFilter)
     */
    public void apply(MarkerFieldFilter filter) {
        super.apply(filter);
        ((SeverityAndDescriptionFieldFilter) filter).selectedSeverities = severities;

    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.ui.internal.provisional.views.markers.FilterConfigurationArea#createContents(org.eclipse.swt.widgets.Composite)
     */
    public void createContents(Composite parent) {

        super.createContents(parent);
        createSeverityGroup(parent);

    }

    /**
     * Create a group for the severity selection.
     * 
     * @param parent
     */
    private void createSeverityGroup(Composite parent) {

        Composite severityComposite = new Composite(parent, SWT.NONE);
        GridLayout layout = new GridLayout(4, false);
        layout.horizontalSpacing = IDialogConstants.BUTTON_MARGIN;
        severityComposite.setLayout(layout);
        severityComposite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.GRAB_HORIZONTAL));

        Label label = new Label(severityComposite, SWT.NONE);
        label.setText(MarkerMessages.filtersDialog_severityLabel);

        errorButton = new Button(severityComposite, SWT.CHECK);
        errorButton.setText(MarkerMessages.filtersDialog_severityError);
        errorButton.addSelectionListener(new SelectionAdapter() {
            /*
             * (non-Javadoc)
             * 
             * @see org.eclipse.swt.events.SelectionListener#widgetSelected(org.eclipse.swt.events.SelectionEvent)
             */
            public void widgetSelected(SelectionEvent e) {
                updateSeverities(SeverityAndDescriptionFieldFilter.SEVERITY_ERROR, errorButton.getSelection());
            }
        });
        GridData data = new GridData();
        data.horizontalIndent = IDialogConstants.BUTTON_MARGIN;
        errorButton.setLayoutData(data);

        warningButton = new Button(severityComposite, SWT.CHECK);
        warningButton.setText(MarkerMessages.filtersDialog_severityWarning);
        warningButton.addSelectionListener(new SelectionAdapter() {
            /*
             * (non-Javadoc)
             * 
             * @see org.eclipse.swt.events.SelectionListener#widgetSelected(org.eclipse.swt.events.SelectionEvent)
             */
            public void widgetSelected(SelectionEvent e) {
                updateSeverities(SeverityAndDescriptionFieldFilter.SEVERITY_WARNING, warningButton.getSelection());
            }
        });

        infoButton = new Button(severityComposite, SWT.CHECK);
        infoButton.setText(MarkerMessages.filtersDialog_severityInfo);
        infoButton.addSelectionListener(new SelectionAdapter() {
            /*
             * (non-Javadoc)
             * 
             * @see org.eclipse.swt.events.SelectionListener#widgetSelected(org.eclipse.swt.events.SelectionEvent)
             */
            public void widgetSelected(SelectionEvent e) {
                updateSeverities(SeverityAndDescriptionFieldFilter.SEVERITY_INFO, infoButton.getSelection());
            }
        });
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.ui.internal.provisional.views.markers.api.FilterConfigurationArea#initialize(org.eclipse.ui.internal.provisional.views.markers.api.MarkerFieldFilter)
     */
    public void initialize(MarkerFieldFilter filter) {
        super.initialize(filter);
        SeverityAndDescriptionFieldFilter sevFilter = (SeverityAndDescriptionFieldFilter) filter;

        severities = sevFilter.selectedSeverities;
        infoButton.setSelection((SeverityAndDescriptionFieldFilter.SEVERITY_INFO & severities) > 0);
        warningButton.setSelection((SeverityAndDescriptionFieldFilter.SEVERITY_WARNING & severities) > 0);
        errorButton.setSelection((SeverityAndDescriptionFieldFilter.SEVERITY_ERROR & severities) > 0);
    }

    /**
     * Set or clear the flag for the constant based on the enablement.
     * 
     * @param constant
     *            one of {@link IMarker#SEVERITY_ERROR},{@link IMarker#SEVERITY_WARNING},{@link IMarker#SEVERITY_INFO}
     * @param enabled
     */
    private void updateSeverities(int constant, boolean enabled) {
        if (enabled)
            severities = constant | severities;
        else
            severities = constant ^ severities;

    }

}