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https://issues.apache.org/jira/browse/WICKET-5827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14305385#comment-14305385
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ASF GitHub Bot commented on WICKET-5827:
----------------------------------------
Github user klopfdreh commented on a diff in the pull request:
https://github.com/apache/wicket/pull/87#discussion_r24094203
--- Diff:
wicket-core/src/main/java/org/apache/wicket/resource/CssUrlReplacementCompressor.java
---
@@ -0,0 +1,144 @@
+/*
+ * 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.wicket.resource;
+
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.net.URL;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.apache.wicket.Application;
+import org.apache.wicket.Component;
+import org.apache.wicket.Page;
+import org.apache.wicket.WicketRuntimeException;
+import org.apache.wicket.application.IComponentInitializationListener;
+import org.apache.wicket.css.ICssCompressor;
+import org.apache.wicket.request.cycle.RequestCycle;
+import org.apache.wicket.request.resource.PackageResourceReference;
+
+/**
+ * This compressor is used to replace url within css files with resources
that belongs to their
+ * corresponding page classes. The compress method is not compressing any
content, but replacing the
+ * URLs with Wicket representatives.<br>
+ * <br>
+ * Usage:
+ *
+ * <pre>
+ * this.getResourceSettings().setCssCompressor(new
CssUrlReplacementCompressor(this));
+ * </pre>
+ *
+ * @since 6.20.0
+ * @author Tobias Soloschenko
+ *
+ */
+public class CssUrlReplacementCompressor implements ICssCompressor
+{
+
+ // Holds the names of pages
+ private Map<String, String> pageNames = Collections.synchronizedMap(new
LinkedHashMap<String, String>());
+
+ // The pattern to find URLs in CSS resources
+ private Pattern urlPattern =
Pattern.compile("url\\(['|\"](.*)['|\"]\\)");
--- End diff --
This is not possible because of Arrays.asList(compressors); in constructor
> Allow to apply multiple Javascript / CSS compressors
> ----------------------------------------------------
>
> Key: WICKET-5827
> URL: https://issues.apache.org/jira/browse/WICKET-5827
> Project: Wicket
> Issue Type: New Feature
> Components: wicket
> Affects Versions: 6.20.0, 7.0.0-M6
> Reporter: Tobias Soloschenko
> Priority: Minor
> Labels: features
>
> It would be nice to be able to add several css and javascript compressions in
> a chain. Example for CSS:
> CssRemoveCommentsCompressor > CssUrlReplacementCompressor >
> CssMinifyCompressor
> The same would be nice for JavaScript files.
> https://github.com/apache/wicket/pull/88
> https://github.com/apache/wicket/pull/87
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