net.sf.gted.tools.properties.FolderSelectionDialog.java Source code

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Here is the source code for net.sf.gted.tools.properties.FolderSelectionDialog.java

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/*
 gted - gted.sourceforge.net
 Copyright (C) 2013 by Simon Martinelli, Erlach, Switzerland
    
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.
    
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
    
 You should have received a copy of the GNU General Public License along
 with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
package net.sf.gted.tools.properties;

import org.eclipse.core.resources.IContainer;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.dialogs.ElementTreeSelectionDialog;
import org.eclipse.ui.dialogs.NewFolderDialog;

/**
 * @author $Author: simas_ch $
 * @version $Revision: 1.5 $, $Date: 2008/08/12 11:20:28 $
 */
public class FolderSelectionDialog extends ElementTreeSelectionDialog implements ISelectionChangedListener {

    private Button fNewFolderButton;

    private IContainer fSelectedContainer;

    /**
     * @param parent
     * @param labelProvider
     * @param contentProvider
     */
    public FolderSelectionDialog(final Shell parent, final ILabelProvider labelProvider,
            final ITreeContentProvider contentProvider) {
        super(parent, labelProvider, contentProvider);
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets
     * .Composite)
     */
    @Override
    protected Control createDialogArea(final Composite parent) {
        final Composite result = (Composite) super.createDialogArea(parent);

        this.getTreeViewer().addSelectionChangedListener(this);
        this.getTreeViewer().expandToLevel(2);
        this.fNewFolderButton = new Button(result, SWT.PUSH);
        this.fNewFolderButton.setText("Create New Folder...");
        this.fNewFolderButton.addSelectionListener(new SelectionAdapter() {

            @Override
            public void widgetSelected(final SelectionEvent event) {
                FolderSelectionDialog.this.newFolderButtonPressed();
            }
        });
        this.fNewFolderButton.setFont(parent.getFont());
        this.fNewFolderButton.setLayoutData(new GridData());

        Dialog.applyDialogFont(result);
        return result;
    }

    private void updateNewFolderButtonState() {
        final IStructuredSelection selection = (IStructuredSelection) this.getTreeViewer().getSelection();
        this.fSelectedContainer = null;
        if (selection.size() == 1) {
            final Object first = selection.getFirstElement();
            if (first instanceof IContainer) {
                this.fSelectedContainer = (IContainer) first;
            }
        }
        this.fNewFolderButton.setEnabled(this.fSelectedContainer != null);
    }

    /**
    * 
    */
    protected void newFolderButtonPressed() {
        final NewFolderDialog dialog = new NewFolderDialog(this.getShell(), this.fSelectedContainer);
        if (dialog.open() == Window.OK) {
            final TreeViewer treeViewer = this.getTreeViewer();
            treeViewer.refresh(this.fSelectedContainer);
            Object createdFolder;
            if (dialog.getResult() != null) {
                createdFolder = dialog.getResult()[0];
                treeViewer.reveal(createdFolder);
                treeViewer.setSelection(new StructuredSelection(createdFolder));
            }
        }
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.eclipse.jface.viewers.ISelectionChangedListener#selectionChanged(
     * org.eclipse.jface.viewers.SelectionChangedEvent)
     */
    public void selectionChanged(final SelectionChangedEvent event) {
        this.updateNewFolderButtonState();
    }

}