com.github.fengtan.sophie.dialogs.EditListValueDialog.java Source code

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Here is the source code for com.github.fengtan.sophie.dialogs.EditListValueDialog.java

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/**
 * Sophie - A Solr browser and administration tool
 * 
 * Copyright (C) 2016 fengtan<https://github.com/fengtan>
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */
package com.github.fengtan.sophie.dialogs;

import java.util.AbstractList;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Objects;

import org.apache.commons.lang3.StringUtils;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.InputDialog;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ListViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;

/**
 * Dialog to prompt user for multiple values.
 */
public class EditListValueDialog extends EditValueDialog {

    /**
     * Default values presented in the list.
     */
    private AbstractList<?> defaultValue;

    /**
     * List widget.
     */
    private ListViewer listViewer;

    /**
     * Create a new dialog to prompt the user for multiple values.
     * 
     * @param shell
     *            Shell.
     * @param defaultValue
     *            Default values presented in the list.
     */
    public EditListValueDialog(Shell shell, AbstractList<?> defaultValue) {
        super(shell);
        this.defaultValue = (defaultValue == null) ? new ArrayList<Object>() : defaultValue;
    }

    @Override
    protected Control createDialogArea(final Composite parent) {
        Composite composite = (Composite) super.createDialogArea(parent);
        composite.setLayout(new RowLayout());

        // Create list widget.
        listViewer = new ListViewer(composite, SWT.V_SCROLL | SWT.H_SCROLL | SWT.MULTI | SWT.BORDER);
        for (Object value : defaultValue) {
            listViewer.add(Objects.toString(value, StringUtils.EMPTY));
        }

        // Create add/remove buttons.
        Composite buttonsComposite = new Composite(composite, SWT.NULL);
        buttonsComposite.setLayout(new FillLayout(SWT.VERTICAL));

        Button buttonAdd = new Button(buttonsComposite, SWT.PUSH);
        buttonAdd.setText("Add");
        buttonAdd.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e) {
                InputDialog input = new InputDialog(parent.getShell(), "Add value", "Add value:", null, null);
                input.open();
                if (input.getReturnCode() == IDialogConstants.OK_ID) {
                    listViewer.add(input.getValue());
                }
            }
        });

        Button buttonRemove = new Button(buttonsComposite, SWT.PUSH);
        buttonRemove.setText("Remove");
        buttonRemove.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e) {
                IStructuredSelection selection = (IStructuredSelection) listViewer.getSelection();
                if (!selection.isEmpty()) {
                    listViewer.remove(selection.toArray());
                }
            }
        });

        return composite;
    }

    @Override
    protected Object fetchValue() {
        String[] items = listViewer.getList().getItems();
        return Arrays.asList(items);
    }

}