Java tutorial
/*=============================================================================# # Copyright (c) 2010-2015 Stephan Wahlbrink (WalWare.de) 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: # Stephan Wahlbrink - initial API and implementation #=============================================================================*/ package de.walware.statet.r.internal.ui.dataeditor; import java.util.Iterator; import org.eclipse.core.commands.ExecutionException; import org.eclipse.jface.action.IMenuManager; import org.eclipse.jface.action.Separator; import org.eclipse.jface.dialogs.IDialogSettings; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.ITreeContentProvider; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.nebula.widgets.nattable.coordinate.RangeList; import de.walware.ecommons.ui.SharedUIResources; import de.walware.ecommons.ui.actions.SimpleContributionItem; import de.walware.ecommons.ui.util.DialogUtil; import de.walware.ecommons.ui.util.UIAccess; import de.walware.ecommons.ui.workbench.AbstractEditorOutlinePage; import de.walware.rj.data.RFactorStore; import de.walware.rj.data.RStore; import de.walware.statet.r.internal.ui.RUIPlugin; import de.walware.statet.r.ui.dataeditor.IRDataTableInput; import de.walware.statet.r.ui.dataeditor.IRDataTableListener; import de.walware.statet.r.ui.dataeditor.IRDataTableVariable; import de.walware.statet.r.ui.dataeditor.RDataTableColumn; public class RDataEditorOutlinePage extends AbstractEditorOutlinePage { static abstract class VariablePropertyItem { protected final IRDataTableVariable fVariable; public VariablePropertyItem(final IRDataTableVariable column) { fVariable = column; } public Object getParent() { return fVariable; } public boolean hasChildren() { return false; } public Object[] getChildren() { return new Object[0]; } public abstract String getName(); public int getCount() { return -1; } @Override public int hashCode() { return getName().hashCode() * fVariable.hashCode(); } @Override public boolean equals(final Object obj) { if (this == obj) { return true; } if (!(obj instanceof VariablePropertyItem)) { return false; } final VariablePropertyItem other = (VariablePropertyItem) obj; return (getName() == other.getName() && fVariable.equals(other.fVariable)); } } private static class FactorLevels extends VariablePropertyItem { public FactorLevels(final RDataTableColumn column) { super(column); } @Override public boolean hasChildren() { return true; } @Override public Object[] getChildren() { final RFactorStore data = (RFactorStore) ((RDataTableColumn) fVariable).getDataStore(); return data.getLevels().toArray(); } @Override public String getName() { return "Factor Levels"; } @Override public int getCount() { final RFactorStore data = (RFactorStore) ((RDataTableColumn) fVariable).getDataStore(); return data.getLevelCount(); } } private static class FTableFactorLevels extends VariablePropertyItem { public FTableFactorLevels(final FTableVariable variable) { super(variable); } @Override public boolean hasChildren() { return true; } @Override public Object[] getChildren() { final RStore data = ((FTableVariable) fVariable).getLevelStore(); return data.toArray(); } @Override public String getName() { return "Levels"; } @Override public int getCount() { final RStore data = ((FTableVariable) fVariable).getLevelStore(); return (int) data.getLength(); } } private class RDataContentProvider implements ITreeContentProvider { @Override public void inputChanged(final Viewer viewer, final Object oldInput, final Object newInput) { } @Override public Object[] getElements(final Object inputElement) { if (fDescription != null) { return new Object[] { fDescription }; } return new Object[0]; } @Override public Object getParent(final Object element) { if (element instanceof RDataTableColumn) { return fDescription; } if (element instanceof VariablePropertyItem) { return ((VariablePropertyItem) element).getParent(); } return null; } @Override public boolean hasChildren(final Object element) { if (element == fDescription) { return (fDescription.getVariables().length > 0); } if (element instanceof RDataTableColumn) { final RDataTableColumn column = (RDataTableColumn) element; return (column.getVarType() == IRDataTableVariable.FACTOR); } else if (element instanceof FTableVariable) { return true; } else if (element instanceof VariablePropertyItem) { final VariablePropertyItem item = (VariablePropertyItem) element; return item.hasChildren(); } return false; } @Override public Object[] getChildren(final Object parentElement) { { Object[] columns; if (parentElement == fDescription && (columns = fDescription.getVariables()).length <= 2500) { return columns; } } if (parentElement instanceof RDataTableColumn) { final RDataTableColumn column = (RDataTableColumn) parentElement; if (column.getVarType() == IRDataTableVariable.FACTOR) { return new Object[] { new FactorLevels(column) }; } } else if (parentElement instanceof FTableVariable) { return new Object[] { new FTableFactorLevels((FTableVariable) parentElement) }; } else if (parentElement instanceof VariablePropertyItem) { final VariablePropertyItem item = (VariablePropertyItem) parentElement; return item.getChildren(); } return new Object[0]; } @Override public void dispose() { } } private final RDataEditor fEditor; private RDataTableContentDescription fDescription; public RDataEditorOutlinePage(final RDataEditor editor) { super("de.walware.r.menu.RDataOutlineViewContextMenu"); //$NON-NLS-1$ fEditor = editor; } public RDataEditor getDataEditor() { return fEditor; } @Override protected IDialogSettings getDialogSettings() { return DialogUtil.getDialogSettings(RUIPlugin.getDefault(), "RDataOutlineView"); } @Override protected void configureViewer(final TreeViewer viewer) { viewer.setUseHashlookup(true); viewer.setContentProvider(new RDataContentProvider()); viewer.setLabelProvider(new RDataLabelProvider()); viewer.setInput(this); } @Override protected void init() { super.init(); fEditor.getRDataTable().addTableListener(new IRDataTableListener() { @Override public void inputChanged(final IRDataTableInput input, final RDataTableContentDescription description) { final boolean isNew = (description != null && (fDescription == null || fDescription.getVariables().length != description.getVariables().length)); fDescription = description; final TreeViewer viewer = getViewer(); if (UIAccess.isOkToUse(viewer)) { viewer.refresh(); if (isNew && fDescription != null) { // viewer.setExpandedTreePaths(new TreePath[] { new TreePath(new Object[] { fDescription }) }); viewer.expandToLevel(3); } } } }); } @Override protected void selectInEditor(final ISelection selection) { if (selection.isEmpty()) { return; } if (selection instanceof IStructuredSelection) { final IStructuredSelection structuredSelection = (IStructuredSelection) selection; if (structuredSelection.size() == 1) { final Object element = structuredSelection.getFirstElement(); if (element instanceof RDataTableColumn) { fEditor.getRDataTable().revealColumn(((RDataTableColumn) element).getIndex()); } } } } @Override protected void contextMenuAboutToShow(final IMenuManager m) { final IStructuredSelection selection = (IStructuredSelection) getViewer().getSelection(); for (final Iterator<?> iterator = selection.iterator(); iterator.hasNext();) { final Object element = iterator.next(); if (!(element instanceof RDataTableColumn)) { return; } } m.add(new SimpleContributionItem("Select Column", "S") { @Override protected void execute() throws ExecutionException { final IStructuredSelection selection = (IStructuredSelection) getViewer().getSelection(); final RangeList columnIndexes = new RangeList(); for (final Iterator<?> iterator = selection.iterator(); iterator.hasNext();) { final Object element = iterator.next(); if (element instanceof RDataTableColumn) { columnIndexes.values().add(((RDataTableColumn) element).getIndex()); } else { return; } } fEditor.getRDataTable().selectColumns(columnIndexes); } }); m.add(new Separator()); if (selection.size() == 1) { m.add(new SimpleContributionItem( SharedUIResources.getImages().getDescriptor(SharedUIResources.LOCTOOL_SORT_ALPHA_IMAGE_ID), null, "Sort Increasing by Column", "I") { @Override protected void execute() throws ExecutionException { final IStructuredSelection selection = (IStructuredSelection) getViewer().getSelection(); final Object element = selection.getFirstElement(); if (selection.size() == 1 && element instanceof RDataTableColumn) { final RDataTableColumn column = (RDataTableColumn) element; fEditor.getRDataTable().sortByColumn(column.getIndex(), true); } } }); m.add(new SimpleContributionItem("Sort Decreasing by Column", "I") { @Override protected void execute() throws ExecutionException { final IStructuredSelection selection = (IStructuredSelection) getViewer().getSelection(); final Object element = selection.getFirstElement(); if (selection.size() == 1 && element instanceof RDataTableColumn) { final RDataTableColumn column = (RDataTableColumn) element; fEditor.getRDataTable().sortByColumn(column.getIndex(), false); } } }); } m.add(new SimpleContributionItem("Clear All Sorting", "O") { @Override protected void execute() throws ExecutionException { fEditor.getRDataTable().clearSorting(); } }); } }