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