org.sakaiproject.profile2.tool.pages.ViewPictures.java Source code

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Here is the source code for org.sakaiproject.profile2.tool.pages.ViewPictures.java

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/**
 * Copyright (c) 2008-2012 The Sakai Foundation
 *
 * Licensed under the Educational Community 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.osedu.org/licenses/ECL-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 org.sakaiproject.profile2.tool.pages;

import org.apache.log4j.Logger;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.AjaxLink;
import org.apache.wicket.feedback.FeedbackMessage;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.link.Link;
import org.apache.wicket.markup.html.navigation.paging.PagingNavigator;
import org.apache.wicket.markup.html.panel.FeedbackPanel;
import org.apache.wicket.markup.repeater.Item;
import org.apache.wicket.markup.repeater.data.GridView;
import org.apache.wicket.markup.repeater.data.IDataProvider;
import org.apache.wicket.model.StringResourceModel;
import org.sakaiproject.profile2.model.GalleryImage;
import org.sakaiproject.profile2.tool.components.ErrorLevelsFeedbackMessageFilter;
import org.sakaiproject.profile2.tool.components.GalleryImageRenderer;
import org.sakaiproject.profile2.tool.dataproviders.GalleryImageDataProvider;
import org.sakaiproject.profile2.util.ProfileConstants;

/**
 * Gallery component for viewing another user's pictures.
 */
public class ViewPictures extends BasePage {

    private static final Logger log = Logger.getLogger(ViewPictures.class);

    private GridView gridView;

    public ViewPictures(String userUuid) {

        log.debug("ViewPictures()");

        configureFeedback();
        createGalleryForm(userUuid);
    }

    private void createGalleryForm(final String userUuid) {

        Label galleryHeading = new Label("galleryHeading", new StringResourceModel("heading.pictures.view.pictures",
                null, new Object[] { sakaiProxy.getUserDisplayName(userUuid) }));

        add(galleryHeading);

        Form galleryForm = new Form("galleryForm") {

            private static final long serialVersionUID = 1L;
        };
        galleryForm.setOutputMarkupId(true);

        populateGallery(galleryForm, userUuid);

        add(galleryForm);
    }

    private void populateGallery(Form galleryForm, final String userUuid) {

        IDataProvider dataProvider = new GalleryImageDataProvider(userUuid);

        long numImages = dataProvider.size();

        gridView = new GridView("rows", dataProvider) {

            private static final long serialVersionUID = 1L;

            @Override
            protected void populateItem(Item item) {

                final GalleryImage image = (GalleryImage) item.getModelObject();

                final GalleryImageRenderer galleryImageThumbnailRenderer = new GalleryImageRenderer(
                        "galleryImageThumbnailRenderer", image.getThumbnailResource());

                AjaxLink galleryImageLink = new AjaxLink("galleryItem") {

                    public void onClick(AjaxRequestTarget target) {
                        setResponsePage(new ViewPicture(image));
                    }

                };
                galleryImageLink.add(galleryImageThumbnailRenderer);

                item.add(galleryImageLink);
            }

            @Override
            protected void populateEmptyItem(Item item) {

                Link galleryImageLink = new Link("galleryItem") {
                    @Override
                    public void onClick() {

                    }
                };

                galleryImageLink.add(new Label("galleryImageThumbnailRenderer"));
                item.add(galleryImageLink);
            }
        };

        gridView.setRows(3);
        gridView.setColumns(4);

        galleryForm.add(gridView);

        //pager
        if (numImages == 0) {
            galleryForm.add(new PagingNavigator("navigator", gridView).setVisible(false));
        } else if (numImages <= ProfileConstants.MAX_GALLERY_IMAGES_PER_PAGE) {
            galleryForm.add(new PagingNavigator("navigator", gridView).setVisible(false));
        } else {
            galleryForm.add(new PagingNavigator("navigator", gridView));
        }
    }

    private void configureFeedback() {

        // activate feedback panel
        final FeedbackPanel feedback = new FeedbackPanel("feedback");
        feedback.setOutputMarkupId(true);
        add(feedback);

        // don't show filtered feedback errors in feedback panel
        int[] filteredErrorLevels = new int[] { FeedbackMessage.ERROR };
        feedback.setFilter(new ErrorLevelsFeedbackMessageFilter(filteredErrorLevels));
    }
}