eu.geclipse.jsdl.ui.widgets.SweepDeleteDialog.java Source code

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Here is the source code for eu.geclipse.jsdl.ui.widgets.SweepDeleteDialog.java

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/******************************************************************************
 * Copyright (c) 2008 g-Eclipse consortium 
 * 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
 *
 * Initial development of the original code was made for
 * project g-Eclipse founded by European Union
 * project number: FP6-IST-034327  http://www.geclipse.eu/
 *
 * Contributor(s):
 *     PSNC: 
 *      - Katarzyna Bylec (katis@man.poznan.pl)
 *           
 *****************************************************************************/
package eu.geclipse.jsdl.ui.widgets;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;

/**
 * Dialog for handling deletion of sweeped parameters in case there is more than
 * one parameter on the same sweep level.
 */
public class SweepDeleteDialog extends Dialog {

    private TableViewer viewer;
    private List<String> input;
    private List<String> outputReturn;

    /**
     * Creates new instance of SweepDeleteDialog class.
     * 
     * @param parentShell shell of parent widget
     * @param input list of parameters from the same sweep level of deletion
     */
    public SweepDeleteDialog(final Shell parentShell, final List<String> input) {
        super(parentShell);
        this.input = input;
    }

    /*
     * (non-Javadoc)
     * @see
     * org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets
     * .Composite)
     */
    @Override
    protected Control createDialogArea(final Composite parent) {
        Composite mainComp = new Composite(parent, SWT.NONE);
        mainComp.setLayout(new GridLayout(2, false));
        GridData gData = new GridData();
        Label description = new Label(mainComp, SWT.LEAD);
        gData.horizontalSpan = 2;
        description.setLayoutData(gData);
        description.setText(Messages.getString("SweepDeleteDialog.info_message_part1")); //$NON-NLS-1$
        Label descr1 = new Label(mainComp, SWT.LEAD);
        descr1.setText(Messages.getString("SweepDeleteDialog.info_message_part2")); //$NON-NLS-1$
        gData = new GridData();
        gData.horizontalSpan = 2;
        descr1.setLayoutData(gData);
        gData = new GridData(GridData.FILL_BOTH | GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL);
        gData.horizontalSpan = 2;
        gData.heightHint = 100;
        this.viewer = new TableViewer(mainComp, SWT.V_SCROLL | SWT.BORDER | SWT.MULTI);
        this.viewer.setLabelProvider(new LabelProvider());
        this.viewer.setContentProvider(new cProvider());
        this.viewer.setInput(this.input);
        this.viewer.getTable().setLayoutData(gData);
        return mainComp;
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.jface.dialogs.Dialog#buttonPressed(int)
     */
    @Override
    protected void buttonPressed(final int buttonId) {
        if (buttonId == IDialogConstants.SELECT_ALL_ID) {
            this.outputReturn = this.input;
            okPressed();
        } else if (buttonId == IDialogConstants.PROCEED_ID) {
            this.outputReturn = getSelection();
            okPressed();
        } else if (buttonId == IDialogConstants.CANCEL_ID) {
            cancelPressed();
        }
    }

    @SuppressWarnings("unchecked")
    private List<String> getSelection() {
        List<String> result = new ArrayList<String>();
        ISelection sel = this.viewer.getSelection();
        if (sel instanceof StructuredSelection) {
            StructuredSelection sSel = (StructuredSelection) sel;
            result = sSel.toList();
        }
        return result;
    }

    /*
     * (non-Javadoc)
     * @see
     * org.eclipse.jface.dialogs.Dialog#createButtonBar(org.eclipse.swt.widgets
     * .Composite)
     */
    @Override
    protected Control createButtonBar(final Composite parent) {
        Composite buttonsComp = new Composite(parent, SWT.NONE);
        buttonsComp.setLayout(new GridLayout(0, true));
        GridData gData = new GridData(GridData.FILL_BOTH);
        gData.verticalIndent = 10;
        gData.horizontalAlignment = SWT.END;
        buttonsComp.setLayoutData(gData);
        createButton(buttonsComp, IDialogConstants.SELECT_ALL_ID,
                Messages.getString("SweepDeleteDialog.delete_all_button"), //$NON-NLS-1$
                true);
        createButton(buttonsComp, IDialogConstants.PROCEED_ID,
                Messages.getString("SweepDeleteDialog.delete_all_selected"), //$NON-NLS-1$
                false);
        createButton(buttonsComp, IDialogConstants.CANCEL_ID, IDialogConstants.CANCEL_LABEL, false);
        return buttonsComp;
    }

    /**
     * Method to access list of elements to remove as selected in dialog when user
     * confirmed exit.
     * 
     * @return list of parameters to delete from the same sweep level of deletion
     */
    public List<String> getElementsToRemove() {
        return this.outputReturn;
    }

    class cProvider implements IStructuredContentProvider {

        @SuppressWarnings("unchecked")
        public Object[] getElements(final Object inputElement) {
            String[] result = null;
            if (inputElement instanceof List) {
                result = (String[]) ((List) inputElement).toArray(new String[0]);
            }
            return result;
        }

        public void dispose() {
            // do nothing
        }

        public void inputChanged(final Viewer viewer1, final Object oldInput, final Object newInput) {
            // do nothing
        }
    }
}