net.sf.wickedshell.ui.batch.BatchManager.java Source code

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Here is the source code for net.sf.wickedshell.ui.batch.BatchManager.java

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/*
 * BatchManager.java
 * 
 * Copyright 2003-2004 Stefan Reichert.
 * All Rights Reserved.
 * 
 * This software is the proprietary information of Stefan Reichert.
 * Use is subject to license terms.
 * 
 */
package net.sf.wickedshell.ui.batch;

import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.List;

import net.sf.wickedshell.ShellID;
import net.sf.wickedshell.ShellPlugin;
import net.sf.wickedshell.domain.DomainPlugin;
import net.sf.wickedshell.domain.batch.IBatchFileDescriptor;
import net.sf.wickedshell.facade.descriptor.IShellDescriptor;
import net.sf.wickedshell.preferences.PreferenceHelper;

import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.widgets.Text;

/**
 * @author Stefan Reichert
 * @since 23.05.2005
 */
public class BatchManager implements ISelectionChangedListener, IPropertyChangeListener {

    private TableViewer tableViewerBatchFiles;

    private Text textBatchFile;

    /**
     * Constructor for BatchManager.
     */
    public BatchManager(TableViewer tableViewerBatchFiles, Text textBatchFile) {
        super();
        this.tableViewerBatchFiles = tableViewerBatchFiles;
        this.textBatchFile = textBatchFile;
        ShellPlugin.getDefault().getPreferenceStore().addPropertyChangeListener(this);
    }

    /**
     * @see org.eclipse.jface.util.IPropertyChangeListener#propertyChange(org.eclipse.jface.util.PropertyChangeEvent)
     */
    public void propertyChange(PropertyChangeEvent event) {
        if (!tableViewerBatchFiles.getTable().isDisposed()) {
            String property = event.getProperty();
            if (property.equals(ShellID.SHELL_DESCRIPTOR_ID_STRING_KEY)) {
                refreshBatchView();
            }
        }
    }

    public void activate() {
        tableViewerBatchFiles.setInput(DomainPlugin.getDefault().getBatchFileDescriptors());
        tableViewerBatchFiles.addSelectionChangedListener(this);
    }

    public void deactivate() {
        tableViewerBatchFiles.removeSelectionChangedListener(this);
    }

    @SuppressWarnings("unchecked")
    public void addBatchFileDescriptor(IBatchFileDescriptor batchFileDescriptor) {
        IShellDescriptor descriptor = PreferenceHelper.getActiveShellDescriptor();
        File file = new File(batchFileDescriptor.getFilename());
        if (file.isFile() && descriptor.isAllowedForBatchList(file)) {
            List batchFileDescriptors = DomainPlugin.getDefault().getBatchFileDescriptors();
            batchFileDescriptors.add(batchFileDescriptor);
            tableViewerBatchFiles.setInput(batchFileDescriptors);
            tableViewerBatchFiles.setSelection(new StructuredSelection(batchFileDescriptor));
            tableViewerBatchFiles.getTable().forceFocus();
        }
    }

    public void removeBatchFileDescriptor(IBatchFileDescriptor batchFileDescriptor) {
        List<IBatchFileDescriptor> batchFileDescriptors = DomainPlugin.getDefault().getBatchFileDescriptors();
        batchFileDescriptors.remove(batchFileDescriptor);
        tableViewerBatchFiles.setInput(batchFileDescriptors);
        tableViewerBatchFiles.setSelection(StructuredSelection.EMPTY);
        tableViewerBatchFiles.getTable().forceFocus();
    }

    public void removeAllBatchFileDescriptors() {
        List<IBatchFileDescriptor> batchFileDescriptors = DomainPlugin.getDefault().getBatchFileDescriptors();
        batchFileDescriptors.clear();
        tableViewerBatchFiles.setInput(batchFileDescriptors);
        tableViewerBatchFiles.setSelection(StructuredSelection.EMPTY);
        tableViewerBatchFiles.getTable().forceFocus();
    }

    /**
     * @see org.eclipse.jface.viewers.ISelectionChangedListener#selectionChanged(org.eclipse.jface.viewers.SelectionChangedEvent)
     */
    public void selectionChanged(SelectionChangedEvent event) {
        StructuredSelection selection = (StructuredSelection) event.getSelection();
        if (!selection.isEmpty()) {
            IBatchFileDescriptor descriptor = (IBatchFileDescriptor) selection.getFirstElement();
            File selectedFile = new File(descriptor.getFilename());
            try {
                char[] fileContentBuffer = new char[256];
                StringBuffer fileContent = new StringBuffer();
                FileReader fileReader = new FileReader(selectedFile);
                while (fileReader.read(fileContentBuffer) != -1) {
                    fileContent.append(fileContentBuffer);
                }
                fileReader.close();
                textBatchFile.setText(fileContent.toString());
            } catch (IOException exception) {
                textBatchFile.setText("Error while reading selected file (" + exception.getMessage() + ")!");
            }
        } else {
            textBatchFile.setText("");
        }
    }

    public void refreshBatchView() {
        tableViewerBatchFiles.refresh();
    }
}