src/plugins/android.codeutils/src/com/motorola/studio/android/wizards/buildingblocks/NewActivityBasedOnTemplatePage.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.wizards.buildingblocks;

import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.ui.wizards.NewTypeWizardPage;
import org.eclipse.jface.dialogs.IPageChangeProvider;
import org.eclipse.jface.dialogs.IPageChangedListener;
import org.eclipse.jface.dialogs.PageChangedEvent;
import org.eclipse.jface.wizard.IWizardPage;
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 com.motorola.studio.android.codeutils.CodeUtilsActivator;
import com.motorola.studio.android.codeutils.i18n.CodeUtilsNLS;
import com.motorola.studio.android.common.exception.AndroidException;
import com.motorola.studio.android.common.utilities.AndroidUtils;
import com.motorola.studio.android.model.ActivityBasedOnTemplate;

/**
 * Class that implements the Activity Wizard Main Page
 */
public class NewActivityBasedOnTemplatePage extends NewLauncherWizardPage
{

    private IPackageFragmentRoot currentPackageFragmentRoot;

    private IPackageFragmentRoot previousPackageFragmentRoot;

    private boolean firstLoad = true;

    /**
     * Listener to verify when this page is visible
     */
    private class PageChangeListener implements IPageChangedListener
    {
        /*
         * (non-Javadoc)
         * 
         * @see
         * org.eclipse.jface.dialogs.IPageChangedListener#pageChanged(org.eclipse
         * .jface.dialogs.PageChangedEvent)
         */
        public void pageChanged(PageChangedEvent event)
        {
            if ((event.getSelectedPage() == NewActivityBasedOnTemplatePage.this))
            {
                if (!firstLoad)
                {
                    handleFieldChanged(NewTypeWizardPage.TYPENAME);
                    handleFieldChanged(NewTypeWizardPage.PACKAGE);
                }
                firstLoad = false;
            }
        }
    }

    @Override
    public boolean canFlipToNextPage()
    {
        if (getBuildBlock().isDatabaseTemplateSelected())
        {
            return !getBuildBlock().isBasicInformationFilledIn();
        }
        else
        {
            return false;
        }

    }

    private static final String NEW_ACTIVITY_BASED_ON_TEMPLATE_HELP = CodeUtilsActivator.PLUGIN_ID
            + ".new-activity-based-on-template"; //$NON-NLS-1$

    /**
     * Default constructor
     * 
     * @param activity The activity model
     */
    public NewActivityBasedOnTemplatePage(ActivityBasedOnTemplate activity)
    {
        super(activity, CodeUtilsNLS.UI_NewActivityMainPage_PageTitle);
    }

    /*
     * (non-Javadoc)
     * @see com.motorola.studio.android.wizards.buildingblocks.NewBuildingBlocksWizard#getBuildBlock()
     */
    @Override
    public ActivityBasedOnTemplate getBuildBlock()
    {
        return (ActivityBasedOnTemplate) super.getBuildBlock();
    }

    /* (non-Javadoc)
     * @see com.motorola.studio.android.wizards.buildingblocks.NewBuildingBlocksWizardPage#getMethods()
     */
    @Override
    protected Method[] getMethods()
    {
        return null;
    }

    /* (non-Javadoc)
     * @see com.motorola.studio.android.wizards.buildingblocks.NewBuildingBlocksWizardPage#createIntermediateControls(org.eclipse.swt.widgets.Composite)
     */
    @Override
    protected void createIntermediateControls(Composite parent)
    {
        createIntentFilterControls(parent);
        createMainActivityControl(parent, 4);
    }

    private void createMainActivityControl(Composite parent, int nColumns)
    {
        // Create a checkbox to allow the user to set the created activity as the MAIN activity
        Button checkButtonMainActivity = new Button(parent, SWT.CHECK | SWT.LEFT);
        GridData gridData = new GridData(SWT.FILL, SWT.CENTER, true, false, nColumns, 1);
        checkButtonMainActivity.setLayoutData(gridData);
        checkButtonMainActivity.setText(CodeUtilsNLS.UI_NewActivityMainPage_CheckMainButton);
        checkButtonMainActivity.addSelectionListener(new SelectionAdapter()
        {

            @Override
            public void widgetSelected(SelectionEvent e)
            {
                if (e.widget instanceof Button)
                {
                    // Set Activity flag accordingly
                    getBuildBlock().setMainActivity(((Button) e.widget).getSelection());

                }
            }

        });

        // Add a listener to the wizard to listen for page changes
        if (getContainer() instanceof IPageChangeProvider)
        {
            ((IPageChangeProvider) getContainer()).addPageChangedListener(new PageChangeListener());
        }

        currentPackageFragmentRoot = getBuildBlock().getPackageFragmentRoot();
        previousPackageFragmentRoot = getBuildBlock().getPackageFragmentRoot();
    }

    /* (non-Javadoc)
     * @see com.motorola.studio.android.wizards.buildingblocks.NewBuildingBlocksWizardPage#getDefaultMessage()
     */
    @Override
    public String getDefaultMessage()
    {
        return CodeUtilsNLS.UI_NewActivityMainPage_DescriptionCreateActivityBasedOnTemplate;
    }

    /* (non-Javadoc)
     * @see com.motorola.studio.android.wizards.buildingblocks.NewBuildingBlocksWizardPage#getWizardTitle()
     */
    @Override
    public String getWizardTitle()
    {
        return CodeUtilsNLS.UI_NewActivityMainPage_TitleActivityBasedOnTemplate;
    }

    /* (non-Javadoc)
     * @see com.motorola.studio.android.wizards.buildingblocks.NewLauncherWizardPage#getIntentFiltersActions()
     */
    @Override
    protected String[] getIntentFiltersActions()
    {
        String[] intentFiltersActions = new String[0];
        try
        {
            intentFiltersActions = AndroidUtils.getActivityActions(getBuildBlock().getProject());
        }
        catch (AndroidException e)
        {
            setErrorMessage(e.getMessage());
        }
        return intentFiltersActions;
    }

    /**
     * Gets the help ID to be used for attaching
     * context sensitive help. 
     * 
     * Classes that extends this class and want to set
     * their on help should override this method
     */
    @Override
    protected String getHelpId()
    {
        return NEW_ACTIVITY_BASED_ON_TEMPLATE_HELP;
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.eclipse.jdt.ui.wizards.NewTypeWizardPage#handleFieldChanged(java.
     * lang.String)
     */
    @Override
    protected void handleFieldChanged(String fieldName)
    {
        super.handleFieldChanged(fieldName);

        if (NewTypeWizardPage.CONTAINER.equals(fieldName))
        {
            currentPackageFragmentRoot = getBuildBlock().getPackageFragmentRoot();

            if ((currentPackageFragmentRoot != null)
                    && (!currentPackageFragmentRoot.equals(previousPackageFragmentRoot)))
            {
                previousPackageFragmentRoot = currentPackageFragmentRoot;
                // Set the collector info to null
                getBuildBlock().setCollectorTable(null);
                getBuildBlock().setCollectorDatabaseName(null);
                getBuildBlock().setDatabaseTableSelected(false);
                getBuildBlock().setSqlOpenHelperDefined(false);
                getBuildBlock().setUseSampleDatabaseTableSelected(false);

                IWizardPage page =
                        getWizard().getPage(CodeUtilsNLS.UI_DefineSqlOpenHelperPage_Title);

                if (!firstLoad)
                {
                    if (page instanceof NewTypeWizardPage)
                    {
                        ((NewTypeWizardPage) page).setPackageFragment(getPackageFragment(), true);
                    }
                }
            }
        }
        if (getWizard().getContainer().getCurrentPage() != null)
        {
            getWizard().getContainer().updateButtons();
        }

    }
}