com.trivadis.loganalysis.ui.internal.wizard.ImportGCLogWizardPage.java Source code

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Here is the source code for com.trivadis.loganalysis.ui.internal.wizard.ImportGCLogWizardPage.java

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/**
 * Copyright (c) 2011 Loganalysis team and contributors
 *
 * 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:
 *   Raffael Schmid - initial API and implementation
 */
package com.trivadis.loganalysis.ui.internal.wizard;

import java.io.File;
import java.io.FileFilter;
import java.util.ArrayList;
import java.util.List;

import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.jface.preference.DirectoryFieldEditor;
import org.eclipse.jface.viewers.CheckStateChangedEvent;
import org.eclipse.jface.viewers.CheckboxTableViewer;
import org.eclipse.jface.viewers.ICheckStateListener;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;

import com.trivadis.loganalysis.core.domain.FileDescriptor;
import com.trivadis.loganalysis.core.domain.IFileDescriptor;
import com.trivadis.loganalysis.ui.internal.Activator;
import com.trivadis.loganalysis.ui.internal.Messages;

public class ImportGCLogWizardPage extends WizardPage implements ICheckStateListener {

    private static final Object[] EMPTY = new Object[] {};
    private CheckboxTableViewer listViewer;
    private final List<IFileDescriptor> files = new ArrayList<IFileDescriptor>();

    public ImportGCLogWizardPage() {
        super(Messages.ImportGCLogWizardSelectionPage_0, Messages.ImportGCLogWizardSelectionPage_1,
                Activator.getDefault().getImageDescriptor("icons/gclog_import.gif")); //$NON-NLS-1$
        setDescription(Messages.ImportGCLogWizardSelectionPage_3);
    }

    public void createControl(final Composite parent) {
        initializeDialogUnits(parent);
        final Composite topLevel = new Composite(parent, SWT.NONE);
        topLevel.setLayout(new GridLayout());
        topLevel.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL | GridData.HORIZONTAL_ALIGN_FILL));
        topLevel.setFont(parent.getFont());

        createSourceGroup(topLevel);
        createDestinationGroup(topLevel);

        setErrorMessage(null);
        setMessage(null);
        setControl(topLevel);
    }

    private void createSourceGroup(final Composite parent) {
        final Composite directorySelection = new Composite(parent, SWT.NONE);
        directorySelection.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.FILL_HORIZONTAL));
        directorySelection.setLayout(fileSelectionLayout());
        addDirectoryFieldEditor(directorySelection);
    }

    final void createDestinationGroup(final Composite parent) {
        listViewer = CheckboxTableViewer.newCheckList(parent, SWT.BORDER);
        final GridData data = new GridData(GridData.FILL_BOTH);
        listViewer.getTable().setLayoutData(data);
        listViewer.getTable().setFont(parent.getFont());
        listViewer.setContentProvider(new IStructuredContentProvider() {

            public void inputChanged(final Viewer viewer, final Object oldInput, final Object newInput) {
            }

            public void dispose() {
            }

            public Object[] getElements(final Object inputElement) {
                final Object[] retVal = EMPTY;
                if (inputElement instanceof IPath) {
                    final IPath path = (IPath) inputElement;
                    final File file = path.toFile();
                    if (file.isDirectory()) {
                        return file.listFiles(new FileFilter() {
                            public boolean accept(final File pathName) {
                                return pathName.isFile();
                            }
                        });
                    }
                }
                return retVal;
            }
        });
        listViewer.setLabelProvider(new ILabelProvider() {
            public void addListener(final ILabelProviderListener listener) {
            }

            public void dispose() {
            }

            public boolean isLabelProperty(final Object element, final String property) {
                return false;
            }

            public void removeListener(final ILabelProviderListener listener) {

            }

            public Image getImage(final Object element) {
                return Activator.getDefault().getImage("icons/profile.gif"); //$NON-NLS-1$
            }

            public String getText(final Object element) {
                return element.toString();
            }

        });
        listViewer.addCheckStateListener(this);

    }

    private void addDirectoryFieldEditor(final Composite directorySelection) {
        final DirectoryFieldEditor directory = new DirectoryFieldEditor("fileSelect", //$NON-NLS-1$
                Messages.ImportGCLogWizardSelectionPage_6, directorySelection);
        directory.getTextControl(directorySelection).addModifyListener(new ModifyListener() {
            public void modifyText(final ModifyEvent e) {
                final IPath path = new Path(directory.getStringValue());
                listViewer.setInput(path);
            }
        });
    }

    private GridLayout fileSelectionLayout() {
        final GridLayout fileSelectionLayout = new GridLayout();
        fileSelectionLayout.numColumns = 3;
        fileSelectionLayout.makeColumnsEqualWidth = false;
        fileSelectionLayout.marginWidth = 0;
        fileSelectionLayout.marginHeight = 0;
        return fileSelectionLayout;
    }

    public void checkStateChanged(final CheckStateChangedEvent event) {
        if (event.getElement() instanceof File) {
            final File file = (File) event.getElement();
            if (event.getChecked() && !getFiles().contains(file)) {
                files.add(FileDescriptor.fromFile(file));
            } else if (!event.getChecked() && getFiles().contains(file)) {
                files.remove(file);
            }
        }
    }

    public List<IFileDescriptor> getFiles() {
        return files;
    }

}