org.eclipse.osee.framework.ui.swt.NonmodalWizardDialog.java Source code

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Here is the source code for org.eclipse.osee.framework.ui.swt.NonmodalWizardDialog.java

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/*******************************************************************************
 * Copyright (c) 2004, 2007 Boeing.
 * 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:
 *     Boeing - initial API and implementation
 *******************************************************************************/
package org.eclipse.osee.framework.ui.swt;

import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.wizard.IWizard;
import org.eclipse.jface.wizard.IWizardPage;
import org.eclipse.jface.wizard.Wizard;
import org.eclipse.jface.wizard.WizardDialog;
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.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Shell;

/**
 * Nonmodal Wizard Dialog
 * 
 * @author Jeff C. Phillips
 */

public class NonmodalWizardDialog extends WizardDialog {
    private Button backButton;
    private Button nextButton;
    private Button finishButton;
    @SuppressWarnings("unused")
    private Button cancelButton;
    @SuppressWarnings("unused")
    private Button helpButton;
    private final IWizard wizard;
    private final SelectionAdapter cancelListener;
    private IWizardPage currentPage = null;

    public NonmodalWizardDialog(Shell shell, Wizard wizard) {
        super(new Shell(), wizard);
        setShellStyle(SWT.MODELESS | SWT.SHELL_TRIM | SWT.CLOSE | SWT.TITLE | SWT.BORDER | SWT.RESIZE | SWT.ON_TOP
                | getDefaultOrientation());

        cancelListener = new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                cancelPressed();
            }
        };

        this.wizard = getWizard();
    }

    @Override
    protected void createButtonsForButtonBar(Composite parent) {
        if (wizard.isHelpAvailable()) {
            helpButton = createButton(parent, IDialogConstants.HELP_ID, IDialogConstants.HELP_LABEL, false);
        }
        if (wizard.needsPreviousAndNextButtons()) {
            createPreviousAndNextButtons(parent);
        }
        finishButton = createButton(parent, IDialogConstants.FINISH_ID, IDialogConstants.FINISH_LABEL, true);
        cancelButton = createCancelButton(parent);
    }

    private Button createCancelButton(Composite parent) {
        // increment the number of columns in the button bar
        ((GridLayout) parent.getLayout()).numColumns++;
        Button button = new Button(parent, SWT.PUSH);
        button.setText(IDialogConstants.CANCEL_LABEL);
        setButtonLayoutData(button);
        button.setFont(parent.getFont());
        button.setData(new Integer(IDialogConstants.CANCEL_ID));
        button.addSelectionListener(cancelListener);
        return button;
    }

    private Composite createPreviousAndNextButtons(Composite parent) {
        // increment the number of columns in the button bar
        ((GridLayout) parent.getLayout()).numColumns++;
        Composite composite = new Composite(parent, SWT.NONE);
        // create a layout with spacing and margins appropriate for the font size.
        GridLayout layout = new GridLayout();
        layout.numColumns = 0; // will be incremented by createButton
        layout.marginWidth = 0;
        layout.marginHeight = 0;
        layout.horizontalSpacing = 0;
        layout.verticalSpacing = 0;
        composite.setLayout(layout);
        GridData data = new GridData(GridData.HORIZONTAL_ALIGN_CENTER | GridData.VERTICAL_ALIGN_CENTER);
        composite.setLayoutData(data);
        composite.setFont(parent.getFont());
        backButton = createButton(composite, IDialogConstants.BACK_ID, IDialogConstants.BACK_LABEL, false);
        nextButton = createButton(composite, IDialogConstants.NEXT_ID, IDialogConstants.NEXT_LABEL, false);
        nextButton.addSelectionListener(new SelectionAdapter() {

            @Override
            public void widgetSelected(SelectionEvent event) {
                //            System.out.println("the next button was pressed");
            }
        });
        return composite;
    }

    @Override
    public void updateButtons() {
        boolean canFlipToNextPage = false;
        boolean canFinish = wizard.canFinish();

        this.currentPage = getCurrentPage();

        if (backButton != null) {
            backButton.setEnabled(currentPage.getPreviousPage() != null);
        }
        if (nextButton != null) {
            canFlipToNextPage = currentPage.canFlipToNextPage();
            nextButton.setEnabled(canFlipToNextPage);
        }
        finishButton.setEnabled(canFinish);
        // finish is default unless it is diabled and next is enabled
        if (canFlipToNextPage && !canFinish) {
            getShell().setDefaultButton(nextButton);
        } else {
            getShell().setDefaultButton(finishButton);
        }
    }
}