Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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.apache.syncope.client.console.wicket.markup.html.form.preview; import org.apache.syncope.client.console.annotations.BinaryPreview; import org.apache.wicket.Component; import org.apache.wicket.extensions.markup.html.image.resource.ThumbnailImageResource; import org.apache.wicket.markup.html.image.NonCachingImage; import org.apache.wicket.request.resource.DynamicImageResource; import org.apache.wicket.request.resource.IResource; @BinaryPreview(mimeTypes = { "image/jpeg", "image/png", "image/gif", "image/bmp", "image/x-png", "image/vnd.wap.wbmp" }) public class BinaryImagePreviewer extends AbstractBinaryPreviewer { private static final long serialVersionUID = 3338812359368457349L; private static final int IMG_SIZE = 300; public BinaryImagePreviewer(final String id, final String mimeType) { super(id, mimeType); } @Override public Component preview(final byte[] uploadedBytes) { return this.addOrReplace( new NonCachingImage("previewImage", new ThumbnailImageResource(new DynamicImageResource() { private static final long serialVersionUID = 923201517955737928L; @Override protected byte[] getImageData(final IResource.Attributes attributes) { return uploadedBytes; } }, IMG_SIZE))); } }