EditPicturePanel.java

/**
 * Copyright 2011 the original author or authors.
 *
 * 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 org.bricket.plugin.picture.web;

import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.AjaxLink;
import org.apache.wicket.ajax.markup.html.form.AjaxButton;
import org.apache.wicket.markup.html.WebResource;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.markup.html.image.Image;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.model.CompoundPropertyModel;
import org.apache.wicket.model.StringResourceModel;
import org.apache.wicket.spring.injection.annot.SpringBean;
import org.apache.wicket.util.resource.FileResourceStream;
import org.apache.wicket.util.resource.IResourceStream;
import org.bricket.plugin.picture.domain.Picture;
import org.bricket.plugin.picture.service.PictureModificationService;
import org.bricket.plugin.picture.service.PictureService;
import org.bricket.web.BricketPanel;

/**
 * @author Ingo Renner
 * @author Henning Teek
 * 
 */
public class EditPicturePanel extends BricketPanel {
    private Form<Picture> form;

    @SpringBean
    private PictureService pictureService;

    @SpringBean
    private PictureModificationService pictureModificationService;

    private Picture image;

    public EditPicturePanel(String id, Picture image) {
        super(id);
        this.image = image;
    }

    @Override
    protected void initGui() {
        form = new Form<Picture>("picture.form", new CompoundPropertyModel<Picture>(image));

        StringResourceModel ltitle = new StringResourceModel("title.label", EditPicturePanel.this, null);
        form.add(new Label("title.label", ltitle));
        form.add(new TextField<String>("title", String.class).setRequired(true).setLabel(ltitle));

        StringResourceModel ldescription = new StringResourceModel("description.label", EditPicturePanel.this, null);
        form.add(new Label("description.label", ldescription));
        form.add(new TextField<String>("description", String.class).setRequired(true).setLabel(ldescription));
        add(form);

        form.add(createPreviewPicture("pic", image));

        form.add(new AjaxLink<Void>("cancel") {
            @Override
            public void onClick(AjaxRequestTarget target) {
                getSession().cleanupFeedbackMessages();
                returnToManagement(target);
            }
        });

        form.add(new AjaxButton("submit", form) {
            @Override
            protected void onSubmit(AjaxRequestTarget target, Form<?> form) {
                doSave(form);
                returnToManagement(target);
            }

            @Override
            protected void onError(AjaxRequestTarget target, Form<?> form) {
                target.addComponent(getFeedback());
            }
        });
    }

    protected Image createPreviewPicture(String id, Picture image) {
        final FileResourceStream resource = new FileResourceStream(pictureModificationService.getLayoutImage(image
                .getDigest()));
        final WebResource wr = new PictureWebResource(resource);
        return new Image(id, wr);
    }

    protected void returnToManagement(AjaxRequestTarget target) {
        final Panel p = new ManagePicturesPanel(EditPicturePanel.this.getId());
        p.setOutputMarkupId(true);
        EditPicturePanel.this.getParent().addOrReplace(p);
        target.addComponent(p);
        target.addComponent(getFeedback());
    }

    protected void doSave(Form<?> form) {
        pictureService.savePicture((Picture) form.getModelObject());
        form.info(new StringResourceModel("feedback.success", EditPicturePanel.this, null).getString());
    }

    private static final class PictureWebResource extends WebResource {
        private final FileResourceStream resource;

        private PictureWebResource(FileResourceStream resource) {
            this.resource = resource;
        }

        @Override
        public IResourceStream getResourceStream() {
            return resource;
        }
    }
}