au.gov.ga.earthsci.bookmark.ui.editor.ExaggerationPropertyEditor.java Source code

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Here is the source code for au.gov.ga.earthsci.bookmark.ui.editor.ExaggerationPropertyEditor.java

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/*******************************************************************************
 * Copyright 2012 Geoscience Australia
 * 
 * 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 au.gov.ga.earthsci.bookmark.ui.editor;

import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;

import au.gov.ga.earthsci.application.widgets.DoubleEditor;
import au.gov.ga.earthsci.application.widgets.DoubleEditor.DoubleChangedEvent;
import au.gov.ga.earthsci.application.widgets.DoubleEditor.DoubleEditorListener;
import au.gov.ga.earthsci.bookmark.BookmarkPropertyFactory;
import au.gov.ga.earthsci.bookmark.model.IBookmark;
import au.gov.ga.earthsci.bookmark.model.IBookmarkProperty;
import au.gov.ga.earthsci.bookmark.properties.exaggeration.ExaggerationProperty;
import au.gov.ga.earthsci.bookmark.ui.editor.IBookmarkEditorMessage.Level;

/**
 * An {@link IBookmarkPropertyEditor} used for viewing/editing a
 * {@link ExaggerationProperty} associated with a {@link IBookmark}.
 * 
 * @author Michael de Hoog
 */
public class ExaggerationPropertyEditor extends AbstractBookmarkPropertyEditor {
    private static final String EXAGGERATION_FIELD = "exaggeration"; //$NON-NLS-1$
    private static final String INVALID_EXAGGERATION_ERROR = "exaggeration.invalid"; //$NON-NLS-1$

    private Composite container;

    private DoubleEditor exaggerationEditor;

    @Override
    public void okPressed() {
        ExaggerationProperty property = (ExaggerationProperty) getProperty();
        if (property == null || container == null) {
            return;
        }

        Double exaggeration = exaggerationEditor.getDoubleValue();
        if (exaggeration == null) {
            exaggeration = 1d;
        }
        property.setExaggeration(exaggeration);
    }

    @Override
    protected IBookmarkProperty createPropertyFromCurrent() {
        return BookmarkPropertyFactory.createProperty(ExaggerationProperty.TYPE);
    }

    @Override
    protected void fillFieldsFromProperty(IBookmarkProperty property) {
        if (property != null) {
            exaggerationEditor.setDoubleValue(((ExaggerationProperty) property).getExaggeration());
        } else {
            exaggerationEditor.setDoubleValue(null);
        }
    }

    @Override
    public Control createControl(Composite parent) {
        container = new Composite(parent, SWT.NONE);
        container.setLayoutData(new GridData(GridData.FILL_BOTH));
        container.setLayout(new GridLayout(2, false));

        ExaggerationProperty exaggeration = (ExaggerationProperty) getProperty();

        exaggerationEditor = addDoubleEditor(exaggeration == null ? null : exaggeration.getExaggeration(),
                EXAGGERATION_FIELD, Messages.ExaggerationPropertyEditor_ExaggerationLabel,
                Messages.ExaggerationPropertyEditor_InvalidMessage);
        return container;
    }

    private DoubleEditor addDoubleEditor(final Double value, final String fieldId, final String labelText,
            final String invalidMessage) {
        Label label = new Label(container, SWT.NONE);
        label.setText(labelText);
        label.setFont(JFaceResources.getBannerFont());

        DoubleEditor editor = new DoubleEditor(container, SWT.NONE);
        if (value != null) {
            editor.setDoubleValue(value);
        }
        GridData gd = new GridData(GridData.FILL_HORIZONTAL);
        gd.grabExcessHorizontalSpace = true;
        gd.horizontalSpan = 2;
        editor.setLayoutData(gd);
        editor.addDoubleEditorListener(new DoubleEditorListener() {
            @Override
            public void doubleChanged(DoubleChangedEvent e) {
                validate(fieldId, e.isValid(),
                        new BookmarkEditorMessage(Level.ERROR, INVALID_EXAGGERATION_ERROR, invalidMessage));
            }
        });

        return editor;
    }

    @Override
    public Control getControl() {
        return container;
    }

    @Override
    public String getName() {
        return Messages.ExaggerationPropertyEditor_EditorName;
    }

    @Override
    public String getDescription() {
        return Messages.ExaggerationPropertyEditor_EditorDescription;
    }
}