Java tutorial
/******************************************************************************* * 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.part.editor; import gov.nasa.worldwind.geom.Position; import gov.nasa.worldwind.geom.Vec4; 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.PositionEditor; import au.gov.ga.earthsci.application.widgets.PositionEditor.PositionChangedEvent; import au.gov.ga.earthsci.application.widgets.PositionEditor.PositionEditorListener; import au.gov.ga.earthsci.application.widgets.Vec4Editor; import au.gov.ga.earthsci.application.widgets.Vec4Editor.Vec4ChangedEvent; import au.gov.ga.earthsci.application.widgets.Vec4Editor.Vec4EditorListener; 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.part.editor.IBookmarkEditorMessage.Level; import au.gov.ga.earthsci.bookmark.properties.camera.CameraProperty; /** * An {@link IBookmarkPropertyEditor} used for viewing/editing a * {@link CameraProperty} associated with a {@link IBookmark}. * * @author James Navin (james.navin@ga.gov.au) */ public class CameraPropertyEditor extends AbstractBookmarkPropertyEditor { private static final String EYE_POSITION_FIELD = "camera.eye"; //$NON-NLS-1$ private static final String LOOKAT_POSITION_FIELD = "camera.lookat"; //$NON-NLS-1$ private static final String UP_VECTOR_FIELD = "camera.up"; //$NON-NLS-1$ private static final String INVALID_POSITION_ERROR = "camera.position.invalid"; //$NON-NLS-1$ protected static final String INVALID_VEC4_ERROR = "camera.up.invalid"; //$NON-NLS-1$ private Composite container; private PositionEditor eyePositionEditor; private PositionEditor lookatPositionEditor; private Vec4Editor upVectorEditor; @Override public void okPressed() { CameraProperty property = (CameraProperty) getProperty(); if (property == null || container == null) { return; } property.setEyePosition(eyePositionEditor.getPositionValue()); property.setLookatPosition(lookatPositionEditor.getPositionValue()); property.setUpVector(upVectorEditor.getVec4Value()); } @Override protected IBookmarkProperty createPropertyFromCurrent() { return BookmarkPropertyFactory.createProperty(CameraProperty.TYPE); } @Override protected void fillFieldsFromProperty(IBookmarkProperty property) { if (property != null) { eyePositionEditor.setPositionValue(((CameraProperty) property).getEyePosition()); lookatPositionEditor.setPositionValue(((CameraProperty) property).getLookatPosition()); upVectorEditor.setVec4Value(((CameraProperty) property).getUpVector()); } else { eyePositionEditor.setPositionValue(null); lookatPositionEditor.setPositionValue(null); upVectorEditor.setVec4Value(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)); CameraProperty camera = (CameraProperty) getProperty(); eyePositionEditor = addPositionEditor(camera == null ? null : camera.getEyePosition(), EYE_POSITION_FIELD, Messages.CameraPropertyEditor_EyePositionLabel, Messages.CameraPropertyEditor_InvalidEyePositionMessage); lookatPositionEditor = addPositionEditor(camera == null ? null : camera.getLookatPosition(), LOOKAT_POSITION_FIELD, Messages.CameraPropertyEditor_LookatPositionLabel, Messages.CameraPropertyEditor_InvalidLookatPositionMessage); upVectorEditor = addVec4Editor(camera == null ? null : camera.getUpVector(), UP_VECTOR_FIELD, Messages.CameraPropertyEditor_UpVectorLabel, Messages.CameraPropertyEditor_InvalidUpVectorMessage); return container; } private PositionEditor addPositionEditor(final Position pos, final String fieldId, final String labelText, final String invalidMessage) { Label label = new Label(container, SWT.NONE); label.setText(labelText); label.setFont(JFaceResources.getBannerFont()); PositionEditor editor = new PositionEditor(container, SWT.NONE); if (pos != null) { editor.setPositionValue(pos); } GridData gd = new GridData(GridData.FILL_HORIZONTAL); gd.grabExcessHorizontalSpace = true; gd.horizontalSpan = 2; editor.setLayoutData(gd); editor.addPositionEditorListener(new PositionEditorListener() { @Override public void positionChanged(PositionChangedEvent e) { validate(fieldId, e.isValid(), new BookmarkEditorMessage(Level.ERROR, INVALID_POSITION_ERROR, invalidMessage)); } }); return editor; } private Vec4Editor addVec4Editor(final Vec4 vec, final String fieldId, final String labelText, final String invalidMessage) { Label label = new Label(container, SWT.NONE); label.setText(labelText); label.setFont(JFaceResources.getBannerFont()); Vec4Editor editor = new Vec4Editor(container, SWT.NONE); if (vec != null) { editor.setVec4Value(vec); } GridData gd = new GridData(GridData.FILL_HORIZONTAL); gd.grabExcessHorizontalSpace = true; gd.horizontalSpan = 2; editor.setLayoutData(gd); editor.addVec4EditorListener(new Vec4EditorListener() { @Override public void vec4Changed(Vec4ChangedEvent e) { validate(fieldId, e.isValid(), new BookmarkEditorMessage(Level.ERROR, INVALID_VEC4_ERROR, invalidMessage)); } }); return editor; } @Override public Control getControl() { return container; } @Override public String getName() { return Messages.CameraPropertyEditor_EditorTitle; } @Override public String getDescription() { return Messages.CameraPropertyEditor_EditorDescription; } }