package com.itjw.txviewer.ui; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.util.Collection; import java.util.Collections; import java.util.HashSet; import java.util.List; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.IAdaptable; import org.eclipse.core.runtime.Path; import org.eclipse.ui.IElementFactory; import org.eclipse.ui.IMemento; public class TxEditorInputFactory implements IElementFactory { /** * Factory id. The workbench plug-in registers a factory by this name * with the "org.eclipse.ui.elementFactories" extension point. */ private static final String ID_FACTORY = "com.itjw.txviewer.ui.TxEditorInputFactory"; //$NON-NLS-1$ /** * Tag for the IFile.fullPath of the file resource. */ private static final String TAG_PATH = "path"; //$NON-NLS-1$ private static final String STREAMLIST_PATH = "stream_list"; //$NON-NLS-1$ /** * Creates a new factory. */ public TxEditorInputFactory() { } /* (non-Javadoc) * Method declared on IElementFactory. */ @SuppressWarnings("unchecked") public IAdaptable createElement(IMemento memento) { // Get the file name. String fileName = memento.getString(TAG_PATH); if (fileName == null) { return null; } // Get a handle to the IFile...which can be a handle // to a resource that does not exist in workspace IFile file = ResourcesPlugin.getWorkspace().getRoot().getFile(new Path(fileName)); if (file != null) { TxEditorInput tei = new TxEditorInput(file); String listData = memento.getString(STREAMLIST_PATH); if (listData != null) { try { ByteArrayInputStream bais = new ByteArrayInputStream(javax.xml.bind.DatatypeConverter.parseHexBinary(listData)); ObjectInputStream ois = new ObjectInputStream(bais); Object obj = ois.readObject(); if(obj instanceof List) tei.getStreamNames().addAll((List)obj); } catch (Exception e) { } } return tei; } return null; } /** * Returns the element factory id for this class. * * @return the element factory id */ public static String getFactoryId() { return ID_FACTORY; } /** * Saves the state of the given file editor input into the given memento. * * @param memento the storage area for element state * @param input the file editor input */ public static void saveState(IMemento memento, TxEditorInput input) { IFile file = input.getFile(); memento.putString(TAG_PATH, file.getFullPath().toString()); try { ByteArrayOutputStream baos = new ByteArrayOutputStream(); ObjectOutputStream oos = new ObjectOutputStream(baos); oos.writeObject(input.getStreamNames()); memento.putString(STREAMLIST_PATH, javax.xml.bind.DatatypeConverter.printHexBinary(baos.toByteArray())); } catch (IOException e) { } } }