org.sakaiproject.sitestats.tool.wicket.pages.MaximizedImagePage.java Source code

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Here is the source code for org.sakaiproject.sitestats.tool.wicket.pages.MaximizedImagePage.java

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/**
 * $URL$
 * $Id$
 *
 * Copyright (c) 2006-2009 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.opensource.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.sitestats.tool.wicket.pages;

import org.apache.wicket.Page;
import org.apache.wicket.request.resource.IResource;
import org.apache.wicket.markup.head.IHeaderResponse;
import org.apache.wicket.markup.head.JavaScriptHeaderItem;
import org.apache.wicket.markup.head.OnDomReadyHeaderItem;
import org.apache.wicket.markup.html.form.Button;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.image.NonCachingImage;
import org.apache.wicket.request.resource.DynamicImageResource;
import org.apache.wicket.request.resource.AbstractResource;
import org.apache.wicket.request.http.WebResponse;
import org.apache.wicket.util.time.Duration;

import org.sakaiproject.sitestats.tool.facade.Locator;

/**
 * @author Nuno Fernandes
 */
public abstract class MaximizedImagePage extends BasePage {
    private static final long serialVersionUID = 1L;

    private Page returnPage;
    private Class returnClass;

    public MaximizedImagePage() {
        init(null, null);
    }

    public MaximizedImagePage(final Page returnPage, final Class returnClass) {
        init(returnPage, returnClass);
    }

    private void init(final Page returnPage, final Class returnClass) {
        String siteId = Locator.getFacade().getToolManager().getCurrentPlacement().getContext();
        boolean allowed = Locator.getFacade().getStatsAuthz().isUserAbleToViewSiteStats(siteId);
        if (allowed) {
            this.returnPage = returnPage;
            this.returnClass = returnClass;
            renderBody();
        } else {
            redirectToInterceptPage(new NotAuthorizedPage());
        }
    }

    @Override
    public void renderHead(IHeaderResponse response) {
        super.renderHead(response);
        response.render(JavaScriptHeaderItem.forUrl(JQUERYSCRIPT));
        response.render(OnDomReadyHeaderItem.forScript("setMainFrameHeightNoScroll(window.name, 750);"));
    }

    public abstract byte[] getMaximizedImageData();

    @SuppressWarnings("serial")
    private void renderBody() {
        NonCachingImage image = new NonCachingImage("image") {
            @SuppressWarnings("serial")
            @Override
            protected IResource getImageResource() {
                return new DynamicImageResource() {

                    @Override
                    protected byte[] getImageData(IResource.Attributes attributes) {
                        return getMaximizedImageData();
                    }

                    // adapted from https://cwiki.apache.org/confluence/display/WICKET/JFreeChart+and+wicket+example
                    @Override
                    protected void configureResponse(AbstractResource.ResourceResponse response,
                            IResource.Attributes attributes) {
                        super.configureResponse(response, attributes);

                        response.setCacheDuration(Duration.NONE);
                        response.setCacheScope(WebResponse.CacheScope.PRIVATE);
                    }
                };
            }
        };
        add(image);

        Form form = new Form("form");
        add(form);

        Button back = new Button("back") {
            @Override
            public void onSubmit() {
                if (returnPage != null) {
                    setResponsePage(returnPage);
                } else if (returnClass != null) {
                    setResponsePage(returnClass);
                }
                super.onSubmit();
            }
        };
        back.setDefaultFormProcessing(true);
        form.add(back);
    }
}