initial contribution

[phpeclipse.git] / archive / org.plog4u.wiki / src / org / plog4u / wiki / macro / LinkMacro.java

diff --git a/archive/org.plog4u.wiki/src/org/plog4u/wiki/macro/LinkMacro.java b/archive/org.plog4u.wiki/src/org/plog4u/wiki/macro/LinkMacro.java
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+/*
+ * This file is part of "SnipSnap Radeox Rendering Engine".
+ *
+ * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel
+ * All Rights Reserved.
+ *
+ * Please visit http://radeox.org/ for updates and contact.
+ *
+ * --LICENSE NOTICE--
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * --LICENSE NOTICE--
+ */
+package org.plog4u.wiki.macro;
+
+import java.io.IOException;
+import java.io.Writer;
+
+
+import org.plog4u.wiki.filter.ICachableMacro;
+import org.radeox.api.engine.ImageRenderEngine;
+import org.radeox.api.engine.RenderEngine;
+import org.radeox.api.engine.context.RenderContext;
+import org.radeox.macro.BaseLocaleMacro;
+import org.radeox.macro.parameter.MacroParameter;
+import org.radeox.util.Encoder;
+
+/*
+ * Macro for displaying external links with a name. The normal UrlFilter
+ * takes the url as a name.
+ *
+ * @author stephan
+ * @team sonicteam
+ */
+
+public class LinkMacro extends BaseLocaleMacro implements ICachableMacro {
+  public String getLocaleKey() {
+    return "macro.link";
+  }
+
+  public void execute(Writer writer, MacroParameter params)
+      throws IllegalArgumentException, IOException {
+
+    RenderContext context = params.getContext();
+    RenderEngine engine = context.getRenderEngine();
+
+    String text = params.get("text", 0);
+    String url = params.get("url", 1);
+    String img = params.get("img", 2);
+
+    // check for single url argument (text == url)
+    if(params.getLength() == 1) {
+      url = text;
+      text = Encoder.toEntity(text.charAt(0)) + Encoder.escape(text.substring(1));
+    }
+
+    if (url != null && text != null) {
+      writer.write("<span class=\"nobr\">");
+      if (!"none".equals(img) && engine instanceof ImageRenderEngine) {
+        writer.write(((ImageRenderEngine) engine).getExternalImageLink());
+      }
+      writer.write("<a href=\"");
+      writer.write(Encoder.escape(url));
+      writer.write("\">");
+      writer.write(text);
+      writer.write("</a></span>");
+    } else {
+      throw new IllegalArgumentException("link needs a name and a url as argument");
+    }
+    return;
+  }
+}