src/plugins/packaging.ui/src/com/motorola/studio/android/packaging/ui/export/PackageExportWizardPage.java

/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.motorola.studio.android.packaging.ui.export;

import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.wizard.WizardPage;
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.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.plugin.AbstractUIPlugin;

import com.motorola.studio.android.packaging.ui.PackagingUIPlugin;
import com.motorola.studio.android.packaging.ui.i18n.Messages;

/**
 * Package Export Wizard Page
 * 
 */
public class PackageExportWizardPage extends WizardPage implements Listener
{
    private PackageExportWizardArea dialogArea;

    private final IStructuredSelection structuredSelection;

    private final boolean signEnabled;

    /**
     * Wizard page constructor.
     * 
     * @param pageName
     * @param selection
     */
    public PackageExportWizardPage(String pageName, IStructuredSelection selection,
            boolean signEnabled)
    {
        super(pageName);
        this.structuredSelection = selection;
        this.signEnabled = signEnabled;
        setTitle(pageName); // NON-NLS-1

        ImageDescriptor imageDescriptor =
                AbstractUIPlugin.imageDescriptorFromPlugin(PackagingUIPlugin.PLUGIN_ID,
                        PackagingUIPlugin.EXPORT_WIZARD_ICON);

        if (imageDescriptor != null)
        {
            setImageDescriptor(imageDescriptor);
        }

        setDescription(Messages.EXPORT_WIZARD_DESCRIPTION);
    }

    /**
     * Create the Wizard page control
     * 
     * @param parent
     *            the parent composite
     */
    public void createControl(Composite parent)
    {
        Composite mainComposite = new Composite(parent, SWT.NONE);
        mainComposite.setLayout(new GridLayout());
        mainComposite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
        mainComposite.addListener(SWT.Modify, this);

        this.dialogArea =
                new PackageExportWizardArea(structuredSelection, mainComposite, this.signEnabled);
        PlatformUI.getWorkbench().getHelpSystem().setHelp(mainComposite,
                PackagingUIPlugin.PACKAGING_WIZARD_CONTEXT_HELP_ID);
        this.setControl(mainComposite);

    }

    /**
     * Override the method isPageComplete
     */
    @Override
    public boolean isPageComplete()
    {
        boolean pageComplete = this.dialogArea.canFinish();
        setMessage(this.dialogArea.getMessage(), this.dialogArea.getSeverity());
        return pageComplete;
    }

    /**
     * Delegates the finish operation to Dialog Implementation.
     */
    public boolean finish()
    {
        return this.dialogArea.performFinish();
    }

    /**
     * Event Handler
     * 
     * @param event
     */
    public void handleEvent(Event event)
    {
        this.getContainer().updateButtons();
        setMessage(this.dialogArea.getMessage(), this.dialogArea.getSeverity());
    }
}