com.svcdelivery.liquibase.eclipse.internal.ui.DataSourcePage.java Source code

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Here is the source code for com.svcdelivery.liquibase.eclipse.internal.ui.DataSourcePage.java

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/**
 * Copyright 2012 Nick Wilson
 *
 * 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.svcdelivery.liquibase.eclipse.internal.ui;

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

import org.eclipse.datatools.connectivity.IConnectionProfile;
import org.eclipse.datatools.connectivity.ProfileManager;
import org.eclipse.jface.viewers.CheckStateChangedEvent;
import org.eclipse.jface.viewers.CheckboxTableViewer;
import org.eclipse.jface.viewers.ICheckStateListener;
import org.eclipse.jface.wizard.IWizardPage;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Table;

/**
 * @author nick
 */
public class DataSourcePage extends WizardPage {

    /**
     * The selected connection profile.
     */
    private IConnectionProfile[] profiles;
    /**
     * A viewer to show available connection profiles.
     */
    private CheckboxTableViewer profilePicker;
    /**
     * Flag to indicate when the user is navigating to the next page, used for
     * triggering events.
     */
    private boolean changingPage = true;
    /**
     * A list of listeners for page completion events.
     */
    private final List<CompleteListener> listeners;

    /**
     * Styles to apply to picker.
     */
    private int style;

    /**
     * Constructor.
     */
    protected DataSourcePage(final int style) {
        super("Data Source");
        this.style = style;
        setTitle("Data Source");
        setMessage("Select the Data Source to run the scripts against.");
        listeners = new ArrayList<CompleteListener>();
        setPageComplete(false);
    }

    @Override
    public final void createControl(final Composite parent) {
        final Composite root = new Composite(parent, SWT.NONE);
        root.setLayout(new FillLayout());

        Table profilePickerTable = new Table(root, SWT.V_SCROLL | SWT.CHECK | style);
        profilePicker = new CheckboxTableViewer(profilePickerTable);
        profilePicker.setContentProvider(new ConnectionProfileContentProvider());
        profilePicker.setLabelProvider(new ConnectionProfileLabelProvider());
        profilePicker.addCheckStateListener(new ICheckStateListener() {

            @Override
            public void checkStateChanged(CheckStateChangedEvent event) {
                Object[] elements = profilePicker.getCheckedElements();
                List<IConnectionProfile> profileList = new ArrayList<IConnectionProfile>();
                for (Object next : elements) {
                    if (next instanceof IConnectionProfile) {
                        profileList.add((IConnectionProfile) next);
                    }
                }
                profiles = profileList.toArray(new IConnectionProfile[profileList.size()]);
                updatePageComplete();
            }
        });
        profilePicker.setInput(ProfileManager.getInstance().getProfiles());
        setControl(root);
    }

    /**
     * Update the page complete status.
     */
    private void updatePageComplete() {
        final boolean ok = profiles != null && profiles.length > 0;
        setPageComplete(ok);
    }

    /**
     * @return The selected connection profile.
     */
    public final IConnectionProfile[] getProfiles() {
        return profiles;
    }

    /**
     * @return The selected connection profile.
     */
    public final IConnectionProfile getProfile() {
        return profiles[0];
    }

    @Override
    public final boolean canFlipToNextPage() {
        changingPage = false;
        final boolean canFlip = super.canFlipToNextPage();
        changingPage = true;
        return canFlip;
    }

    @Override
    public final IWizardPage getNextPage() {
        if (changingPage) {
            final Thread notify = new Thread(new Runnable() {

                @Override
                public void run() {
                    for (final CompleteListener listener : listeners) {
                        listener.complete(true, getProfile());
                    }
                }
            });
            notify.start();
        }
        return super.getNextPage();
    }

    /**
     * @param listener
     *            The page complete listener.
     */
    public final void addPageCompleteListener(final CompleteListener listener) {
        listeners.add(listener);
    }
}