Java tutorial
/* * Copyright (c) 2012 Diamond Light Source Ltd. * * 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 */ package org.dawb.common.ui.views; import java.util.Arrays; import java.util.Collection; import java.util.List; import org.dawb.common.ui.Activator; import org.dawb.common.ui.menu.CheckableActionGroup; import org.dawb.common.ui.menu.MenuAction; import org.dawb.common.ui.preferences.ViewConstants; import org.dawb.common.ui.util.EclipseUtils; import org.eclipse.dawnsci.analysis.api.dataset.IDataset; import org.eclipse.dawnsci.analysis.api.dataset.ILazyDataset; import org.eclipse.dawnsci.analysis.api.io.SliceObject; import org.eclipse.dawnsci.analysis.dataset.impl.Dataset; import org.eclipse.dawnsci.analysis.dataset.impl.Maths; import org.eclipse.dawnsci.plotting.api.IPlottingSystem; import org.eclipse.dawnsci.plotting.api.trace.IImageTrace; import org.eclipse.dawnsci.plotting.api.trace.ITrace; import org.eclipse.dawnsci.slicing.api.system.ISliceGallery; import org.eclipse.dawnsci.slicing.api.system.ISliceSystem; import org.eclipse.jface.action.Action; import org.eclipse.jface.action.IAction; import org.eclipse.jface.action.IToolBarManager; import org.eclipse.jface.action.MenuManager; import org.eclipse.jface.action.Separator; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.preference.PreferenceDialog; import org.eclipse.nebula.widgets.gallery.GalleryItem; import org.eclipse.swt.events.MouseEvent; import org.eclipse.swt.events.MouseListener; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.eclipse.ui.IEditorPart; import org.eclipse.ui.IMemento; import org.eclipse.ui.IViewReference; import org.eclipse.ui.IViewSite; import org.eclipse.ui.IWorkbenchPart; import org.eclipse.ui.PartInitException; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.dialogs.PreferencesUtil; import org.eclipse.ui.part.ViewPart; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * A part similar to ImageMonitorView but it does not monitor. * Instead it navigates a h5 file. * * @author gerring * */ public class H5GalleryView extends ViewPart implements MouseListener, SelectionListener, ISliceGallery { public static final String ID = "org.dawb.workbench.views.h5GalleryView"; //$NON-NLS-1$ private static Logger logger = LoggerFactory.getLogger(H5GalleryView.class); private H5GalleryInfo info; private MenuAction dimensionList; private GalleryDelegate galleryDelegate; private CheckableActionGroup dimensionGroup; public H5GalleryView() { this.galleryDelegate = new GalleryDelegate(); galleryDelegate.init(); } /** * Create contents of the view part. * @param parent */ @Override public void createPartControl(Composite parent) { parent.setLayout(new FillLayout()); galleryDelegate.createContent("Please choose a directory to monitor...", "This part is used to navigate an image set inside an hdf5/nexus file.", parent); createActions(); initializeToolBar(); initializeMenu(); //getSite().setSelectionProvider(new GalleryTreeViewer(gallery)); galleryDelegate.addMouseListener(this); galleryDelegate.addSelectionListener(this); } private void createImageGallery(H5GalleryInfo info) { this.info = info; galleryDelegate.setData(info); } @Override public void init(IViewSite site, IMemento memento) throws PartInitException { super.init(site); try { if (memento == null || memento.getString("DIR") == null) return; //this.directoryPath = memento.getString("DIR"); } catch (Exception ne) { throw new PartInitException(ne.getMessage()); } } @Override public void saveState(IMemento memento) { try { //memento.putString("DIR", directoryPath); } catch (Exception e) { logger.error("Cannot save plot bean", e); } } /** * Create the actions. */ private void createActions() { final MenuManager menuManager = new MenuManager(); galleryDelegate.setMenu(menuManager); getSite().registerContextMenu(menuManager, null); } /** * Initialize the toolbar. */ private void initializeToolBar() { IToolBarManager toolbarManager = getViewSite().getActionBars().getToolBarManager(); final Action lockHistogram = new Action("Lock colour map, also known as histogram, to current plot", IAction.AS_CHECK_BOX) { public void run() { if (isChecked()) { IPlottingSystem<Composite> sys = (IPlottingSystem<Composite>) EclipseUtils.getPage() .getActivePart().getAdapter(IPlottingSystem.class); if (sys == null && EclipseUtils.getPage().getActiveEditor() != null) { sys = (IPlottingSystem<Composite>) EclipseUtils.getPage().getActiveEditor() .getAdapter(IPlottingSystem.class); } if (sys == null) { for (IViewReference vr : EclipseUtils.getPage().getViewReferences()) { final IWorkbenchPart view = vr.getPart(false); if (view != null) sys = (IPlottingSystem<Composite>) view.getAdapter(IPlottingSystem.class); } } if (sys == null) { MessageDialog.openInformation(Display.getDefault().getActiveShell(), "Cannot find plot", "In order to lock colour map in the gallery, please plot an image and make it visible.\n\nPlease make sure that an image is plotted with the colours you would like."); return; } final Collection<ITrace> images = sys.getTraces(IImageTrace.class); if (images == null || images.isEmpty()) { MessageDialog.openInformation(Display.getDefault().getActiveShell(), "Cannot find image", "In order to lock colour map in the gallery, there must be an image plotted and visible.\n\nPlease make sure that an image is plotted with the colours you would like."); return; } final IImageTrace image = (IImageTrace) images.iterator().next(); galleryDelegate.setLockedHistogram(image.getImageServiceBean()); } else { galleryDelegate.setLockedHistogram(null); } } }; lockHistogram.setImageDescriptor(Activator.getImageDescriptor("icons/lock.png")); toolbarManager.add(lockHistogram); final Action refresh = new Action("Refresh gallery", Activator.getImageDescriptor("icons/refresh.png")) { public void run() { galleryDelegate.refreshAll(); } }; toolbarManager.add(refresh); toolbarManager.add(new Separator()); dimensionList = new MenuAction("Slice dimension"); dimensionList.setImageDescriptor(Activator.getImageDescriptor("icons/slice_dimension.gif")); toolbarManager.add(dimensionList); dimensionGroup = new CheckableActionGroup(); Action prefs = new Action("Preferences...", Activator.getImageDescriptor("icons/data.gif")) { @Override public void run() { PreferenceDialog pref = PreferencesUtil.createPreferenceDialogOn( PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(), ViewConstants.PAGE_ID, null, null); if (pref != null) pref.open(); } }; toolbarManager.add(prefs); getViewSite().getActionBars().getMenuManager().add(prefs); } /** * Initialize the menu. */ private void initializeMenu() { getViewSite().getActionBars().getMenuManager(); } @Override public void setFocus() { galleryDelegate.setFocus(); } @Override public void mouseDoubleClick(MouseEvent e) { //System.out.println("Open slice!"); } @Override public void mouseDown(MouseEvent e) { //updateSelection(); } @Override public void widgetSelected(SelectionEvent e) { updateSelection(); } private void updateSelection() { final GalleryItem[] items = galleryDelegate.getSelection(); if (items == null || items.length < 1) return; final IEditorPart part = EclipseUtils.getActiveEditor(); if (part != null) { final ISliceSystem sliceComponent = (ISliceSystem) part.getAdapter(ISliceSystem.class); if (sliceComponent != null) { sliceComponent.setSliceIndex(info.getSliceDimension(), items[0].getItemCount(), items.length <= 1); } if (items.length <= 1) return; List<IDataset> ys = galleryDelegate.getSelectionData(items); final IPlottingSystem<Composite> system = (IPlottingSystem<Composite>) part .getAdapter(IPlottingSystem.class); system.clear(); if (ys.get(0).getShape().length == 1) { system.createPlot1D(null, ys, null); } else if (ys.get(0).getShape().length == 2) { // Average the images, then plot Dataset added = Maths.add(Arrays.asList(ys.toArray(new IDataset[ys.size()])), false); Dataset mean = Maths.divide(added, ys.size()); system.createPlot2D(mean, null, null); } } } public void dispose() { galleryDelegate.removeSelectionListener(this); galleryDelegate.removeMouseListener(this); galleryDelegate.dispose(); info = null; super.dispose(); } @Override public void mouseUp(MouseEvent e) { //System.out.println(e); } @Override public void widgetDefaultSelected(SelectionEvent e) { // Auto-generated method stub } @Override public void updateSlice(final ILazyDataset lazySet, final SliceObject slice) { final H5GalleryInfo info = new H5GalleryInfo(lazySet); info.setShape(lazySet.getShape()); info.setSlice(slice); info.createDefaultSliceDimension(); createImageGallery(info); dimensionList.clear(); dimensionGroup.clear(); final List<Integer> dims = info.getSliceableDimensions(); for (final int dim : dims) { final IAction dimAction = new Action("" + (dim + 1), IAction.AS_CHECK_BOX) { public void run() { info.setSliceDimension(dim); galleryDelegate.refreshAll(); } }; if (info.getSliceDimension() == dim) dimAction.setChecked(true); dimAction.setToolTipText("Slice using the dimension " + dim + " of the data."); dimensionList.add(dimAction); dimensionGroup.add(dimAction); } getViewSite().getActionBars().getToolBarManager().update(true); } }