Java tutorial
/******************************************************************************* * Copyright (c) 2015 MINRES Technologies GmbH 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: * MINRES Technologies GmbH - initial API and implementation *******************************************************************************/ package com.minres.scviewer.ui.views; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.util.LinkedList; import org.eclipse.jface.action.Action; import org.eclipse.jface.action.IMenuListener; import org.eclipse.jface.action.IMenuManager; import org.eclipse.jface.action.MenuManager; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.ISelectionProvider; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Menu; import org.eclipse.ui.ISelectionListener; import org.eclipse.ui.ISharedImages; import org.eclipse.ui.IWorkbenchPart; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.part.IPageSite; import org.eclipse.ui.views.contentoutline.ContentOutlinePage; import com.minres.scviewer.database.IHierNode; import com.minres.scviewer.database.IWaveform; import com.minres.scviewer.database.IWaveformEvent; import com.minres.scviewer.ui.TxEditorPart; import com.minres.scviewer.ui.views.provider.TxDbTreeContentProvider; import com.minres.scviewer.ui.views.provider.TxDbTreeLabelProvider; /** * Creates an outline pagebook for this editor. */ public class TxOutlinePage extends ContentOutlinePage implements ISelectionListener, ISelectionProvider, PropertyChangeListener { public static final int ADD_TO_WAVE = 0; public static final int ADD_ALL_TO_WAVE = 1; public static final int REMOVE_FROM_WAVE = 2; public static final int REMOVE_ALL_FROM_WAVE = 3; private TxEditorPart editor; TreeViewer contentOutlineViewer; public TxOutlinePage(TxEditorPart editor) { this.editor = editor; } /* * (non-Javadoc) * * @see * org.eclipse.ui.part.IPage#createControl(org.eclipse.swt.widgets.Composite * ) */ public void createControl(Composite parent) { super.createControl(parent); contentOutlineViewer = getTreeViewer(); contentOutlineViewer.addSelectionChangedListener(this); // Set up the tree viewer contentOutlineViewer.setContentProvider(new TxDbTreeContentProvider()); contentOutlineViewer.setLabelProvider(new TxDbTreeLabelProvider()); contentOutlineViewer.setInput(editor.getDatabase()); // initialize context menu depending on the the selectec item MenuManager menuMgr = new MenuManager(); menuMgr.setRemoveAllWhenShown(true); menuMgr.addMenuListener(new IMenuListener() { public void menuAboutToShow(IMenuManager manager) { fillContextMenu(manager); } }); Menu menu = menuMgr.createContextMenu(contentOutlineViewer.getControl()); contentOutlineViewer.getTree().setMenu(menu); getSite().registerContextMenu("com.minres.scviewer.ui.outline.contextmenu", menuMgr, contentOutlineViewer); // add me as selection listener getSite().getPage().addSelectionListener((ISelectionListener) this); //getSite().getPage().addSelectionListener("SampleViewId",(ISelectionListener)this); getSite().setSelectionProvider(this); editor.getDatabase().addPropertyChangeListener(this); } /* * (non-Javadoc) * * @see org.eclipse.ui.part.IPage#dispose() */ public void dispose() { // dispose super.dispose(); } /* * (non-Javadoc) * * @see org.eclipse.ui.part.IPage#getControl() */ public Control getControl() { return getTreeViewer().getControl(); } /** * @see org.eclipse.ui.part.IPageBookViewPage#init(org.eclipse.ui.part.IPageSite) */ public void init(IPageSite pageSite) { super.init(pageSite); // IActionBars bars = pageSite.getActionBars(); } private void fillContextMenu(IMenuManager menuMgr) { // initalize the context menu getTreeViewer().getSelection(); ISelection selection = getTreeViewer().getSelection(); if (selection instanceof IStructuredSelection) { IStructuredSelection sel = (IStructuredSelection) selection; Object obj = sel.getFirstElement(); menuMgr.add(makeStreamAction("Add to Wave", ISharedImages.IMG_OBJ_ADD, sel, obj instanceof IWaveform, false)); menuMgr.add(makeStreamAction("Add all to Wave", ISharedImages.IMG_OBJ_ADD, sel, true, false)); // menuMgr.add(makeStreamAction("Remove from Wave", ISharedImages.IMG_TOOL_DELETE, sel, obj instanceof IWaveform, true)); // menuMgr.add(makeStreamAction("Remove all from Wave", ISharedImages.IMG_TOOL_DELETE, sel, true, true)); } } //ISelectionListener methods @Override public void selectionChanged(IWorkbenchPart part, ISelection selection) { // if(!(part instanceof ContentOutline) && selection instanceof IStructuredSelection){ // if(((IStructuredSelection)selection).getFirstElement() instanceof ITransaction){ // System.out.println("Transaction with id "+((ITransaction)((IStructuredSelection)selection).getFirstElement()).getId() +" selected"); // } else if(((IStructuredSelection)selection).getFirstElement() != null) // System.out.println("Something else selected"); // } } /** * Returns the current selection for this provider. * * @return the current selection */ public ISelection getSelection() { if (getTreeViewer() == null) { return StructuredSelection.EMPTY; } return getTreeViewer().getSelection(); } public void setSelection(ISelection selection) { if (getTreeViewer() != null) { getTreeViewer().setSelection(selection); } } /** * @see org.eclipse.jface.viewers.ISelectionProvider#selectionChanged(SelectionChangedEvent) */ public void selectionChanged(SelectionChangedEvent anEvent) { // translate the tree selection ISelection selection = anEvent.getSelection(); if (!selection.isEmpty()) { Object tmp = ((IStructuredSelection) selection).getFirstElement(); if (tmp instanceof IHierNode) { fireSelectionChanged(new StructuredSelection((IHierNode) tmp)); } } } private Action makeStreamAction(String text, String imgDescriptor, final IStructuredSelection selection, boolean enabled, final boolean remove) { Action action = new Action() { @SuppressWarnings("unchecked") public void run() { if (selection != null) for (Object obj : selection.toArray()) { if (obj instanceof IWaveform) { if (remove) editor.removeStreamFromList((IWaveform<? extends IWaveformEvent>) obj); else editor.addStreamToList((IWaveform<? extends IWaveformEvent>) obj); } else if (obj instanceof IHierNode) { LinkedList<IHierNode> queue = new LinkedList<IHierNode>(); LinkedList<IWaveform<? extends IWaveformEvent>> streams = new LinkedList<IWaveform<? extends IWaveformEvent>>(); queue.add((IHierNode) obj); while (queue.size() > 0) { IHierNode n = queue.poll(); if (n instanceof IWaveform) streams.add((IWaveform<? extends IWaveformEvent>) n); queue.addAll(n.getChildNodes()); } if (remove) editor.removeStreamsFromList(streams.toArray(new IWaveform[] {})); else editor.addStreamsToList(streams.toArray(new IWaveform[] {})); } } } }; action.setText(text); action.setImageDescriptor(PlatformUI.getWorkbench().getSharedImages().getImageDescriptor(imgDescriptor)); if (selection.getFirstElement() instanceof IWaveform && editor.getStreamList().contains(selection.getFirstElement())) action.setEnabled(false); else action.setEnabled(true); return action; } @Override public void propertyChange(PropertyChangeEvent evt) { if ("CHILDS".equals(evt.getPropertyName())) { contentOutlineViewer.refresh(); } } }