Moved CLI to its own package. New main class is org.apache.fop.cli.Main.

InputHandler is not passed through the FOUserAgent anymore. IMO it doesn't belong there. Instead I defined an interface "Renderable" in the AWT preview that InputHandler implements. This is used exclusively for reloading the document inside the preview dialog.

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@239409 13f79535-47bb-0310-9956-ffa450edef68

13 files changed, 325 insertions, 206 deletions

diff --git a/src/java/org/apache/fop/apps/FOUserAgent.java b/src/java/org/apache/fop/apps/FOUserAgent.java
index c371a42b6..328087f3b 100644
--- a/src/java/org/apache/fop/apps/FOUserAgent.java
+++ b/src/java/org/apache/fop/apps/FOUserAgent.java
@@ -81,7 +81,6 @@ public class FOUserAgent {
     private PDFEncryptionParams pdfEncryptionParams;
     private float px2mm = DEFAULT_PX2MM;
     private Map rendererOptions = new java.util.HashMap();
-    private InputHandler inputHandler = null;
     private File outputFile = null;
     private Renderer rendererOverride = null;
     private FOEventHandler foEventHandlerOverride = null;
@@ -123,23 +122,6 @@ public class FOUserAgent {
     protected String keywords = null;
     
     /**
-     * Sets the InputHandler object for this process
-     * @param inputHandler holding input file name information
-     */
-    public void setInputHandler(InputHandler inputHandler) {
-        this.inputHandler = inputHandler;
-    }
-
-    /**
-     * Returns the apps.InputHandler object created during command-line
-     * processing
-     * @return InputHandler object
-     */
-    public InputHandler getInputHandler() {
-        return inputHandler;
-    }
-
-    /**
      * Add the element mapping with the given class name.
      * @param elementMapping the class name representing the element mapping.
      */
diff --git a/src/java/org/apache/fop/apps/Fop.java b/src/java/org/apache/fop/apps/Fop.java
index b359e23b7..bef2b4a3e 100644
--- a/src/java/org/apache/fop/apps/Fop.java
+++ b/src/java/org/apache/fop/apps/Fop.java
@@ -19,15 +19,7 @@
 package org.apache.fop.apps;
 
 // Java
-import java.io.BufferedOutputStream;
-import java.io.File;
-import java.io.FileFilter;
-import java.io.FileOutputStream;
 import java.io.OutputStream;
-import java.lang.reflect.Method;
-import java.net.MalformedURLException;
-import java.net.URL;
-import java.util.List;
 
 // XML
 import org.xml.sax.helpers.DefaultHandler;
@@ -37,8 +29,7 @@ import org.apache.fop.fo.Constants;
 import org.apache.fop.fo.FOTreeBuilder;
 
 /**
- * Primary class that activates the FOP process for both command line
- * and embedded usage.
+ * Primary class that activates the FOP process for embedded usage.
  * <P>
  * JAXP is the standard method of embedding FOP in Java programs.
  * Please check our embedding page (http://xml.apache.org/fop/embedding.html)
@@ -161,161 +152,6 @@ public class Fop implements Constants {
     }
 
     /**
-     * @return the list of URLs to all libraries.
-     * @throws MalformedURLException In case there is a problem converting java.io.File
-     * instances to URLs.
-     */
-    public static URL[] getJARList() throws MalformedURLException {
-        File baseDir = new File(".").getAbsoluteFile().getParentFile();
-        File buildDir;
-        if ("build".equals(baseDir.getName())) {
-            buildDir = baseDir;
-            baseDir = baseDir.getParentFile();
-        } else {
-            buildDir = new File(baseDir, "build");
-        }
-        File fopJar = new File(buildDir, "fop.jar");
-        if (!fopJar.exists()) {
-            fopJar = new File(baseDir, "fop.jar");
-        }
-        if (!fopJar.exists()) {
-            throw new RuntimeException("fop.jar not found in directory: " 
-                    + baseDir.getAbsolutePath() + " (or below)");
-        }
-        List jars = new java.util.ArrayList();
-        jars.add(fopJar.toURL());
-        File[] files;
-        FileFilter filter = new FileFilter() {
-            public boolean accept(File pathname) {
-                return pathname.getName().endsWith(".jar");
-            }
-        };
-        File libDir = new File(baseDir, "lib");
-        if (!libDir.exists()) {
-            libDir = baseDir;
-        }
-        files = libDir.listFiles(filter);
-        if (files != null) {
-            for (int i = 0, size = files.length; i < size; i++) {
-                jars.add(files[i].toURL());
-            }
-        }
-        String optionalLib = System.getProperty("fop.optional.lib");
-        if (optionalLib != null) {
-            files = new File(optionalLib).listFiles(filter);
-            if (files != null) {
-                for (int i = 0, size = files.length; i < size; i++) {
-                    jars.add(files[i].toURL());
-                }
-            }
-        }
-        URL[] urls = (URL[])jars.toArray(new URL[jars.size()]);
-        /*
-        for (int i = 0, c = urls.length; i < c; i++) {
-            System.out.println(urls[i]);
-        }*/
-        return urls;
-    }
-    
-    /**
-     * @return true if FOP's dependecies are available in the current ClassLoader setup.
-     */
-    public static boolean checkDependencies() {
-        try {
-            //System.out.println(Thread.currentThread().getContextClassLoader());
-            Class clazz = Class.forName("org.apache.batik.Version");
-            if (clazz != null) {
-                clazz = Class.forName("org.apache.avalon.framework.configuration.Configuration");
-            }
-            return (clazz != null);
-        } catch (Exception e) {
-            return false;
-        }
-    }
-    
-    /**
-     * Dynamically builds a ClassLoader and executes FOP.
-     * @param args command-line arguments
-     */
-    public static void startFOPWithDynamicClasspath(String[] args) {
-        try {
-            URL[] urls = getJARList();
-            //System.out.println("CCL: " 
-            //    + Thread.currentThread().getContextClassLoader().toString());
-            ClassLoader loader = new java.net.URLClassLoader(urls, null);
-            Thread.currentThread().setContextClassLoader(loader);
-            Class clazz = Class.forName("org.apache.fop.apps.Fop", true, loader);
-            //System.out.println("CL: " + clazz.getClassLoader().toString());
-            Method mainMethod = clazz.getMethod("startFOP", new Class[] {String[].class});
-            mainMethod.invoke(null, new Object[] {args});
-        } catch (Exception e) {
-            System.err.println("Unable to start FOP:");
-            e.printStackTrace();
-            System.exit(-1);
-        }
-    }
-    
-    /**
-     * Executes FOP with the given ClassLoader setup.
-     * @param args command-line arguments
-     */
-    public static void startFOP(String[] args) {
-        //System.out.println("static CCL: " 
-        //    + Thread.currentThread().getContextClassLoader().toString());
-        //System.out.println("static CL: " + Fop.class.getClassLoader().toString());
-        CommandLineOptions options = null;
-        FOUserAgent foUserAgent = null;
-        BufferedOutputStream bos = null;
-
-        try {
-            options = new CommandLineOptions();
-            options.parse(args);
-            foUserAgent = options.getFOUserAgent();
-            
-            Fop fop = new Fop(options.getRenderer(), foUserAgent);
-
-            try {
-                if (options.getOutputFile() != null) {
-                    bos = new BufferedOutputStream(new FileOutputStream(
-                        options.getOutputFile()));
-                    fop.setOutputStream(bos);
-                    foUserAgent.setOutputFile(options.getOutputFile());
-                }
-                foUserAgent.getInputHandler().render(fop);
-             } finally {
-                 if (bos != null) {
-                     bos.close();
-                 }
-             }
-
-            // System.exit(0) called to close AWT/SVG-created threads, if any.
-            // AWTRenderer closes with window shutdown, so exit() should not
-            // be called here
-            if (options.getOutputMode() != CommandLineOptions.RENDER_AWT) {
-                System.exit(0);
-            }
-        } catch (Exception e) {
-            if (options != null) {
-                options.getLogger().error("Exception", e);
-            }
-            System.exit(1);
-        }
-    }
-    
-    /**
-     * The main routine for the command line interface
-     * @param args the command line parameters
-     */
-    public static void main(String[] args) {
-        if (checkDependencies()) {
-            startFOP(args);
-        } else {
-            startFOPWithDynamicClasspath(args);
-        }
-    }
-
-
-    /**
      * Get the version of FOP
      * @return the version string
      */
diff --git a/src/java/org/apache/fop/apps/package.html b/src/java/org/apache/fop/apps/package.html
index c8a9798d5..2bf75de3f 100644
--- a/src/java/org/apache/fop/apps/package.html
+++ b/src/java/org/apache/fop/apps/package.html
@@ -1,7 +1,6 @@
 <HTML>
 <TITLE>org.apache.fop.apps Package</TITLE>
 <BODY>
-<P>Application classes used for running FOP both on the command line and
-embedded in other applications.</P>
+<P>Application classes used for running FOP embedded in other applications.</P>
 </BODY>
 </HTML>
\ No newline at end of file
diff --git a/src/java/org/apache/fop/apps/CommandLineOptions.java b/src/java/org/apache/fop/cli/CommandLineOptions.java
index 434fb8be1..3eb70b577 100644
--- a/src/java/org/apache/fop/apps/CommandLineOptions.java
+++ b/src/java/org/apache/fop/cli/CommandLineOptions.java
@@ -16,7 +16,7 @@
 
 /* $Id$ */
 
-package org.apache.fop.apps;
+package org.apache.fop.cli;
 
 // java
 import java.io.File;
@@ -25,7 +25,11 @@ import java.io.IOException;
 import java.util.Locale;
 import java.util.Vector;
 
+import org.apache.fop.apps.FOPException;
+import org.apache.fop.apps.FOUserAgent;
+import org.apache.fop.apps.Fop;
 import org.apache.fop.fo.Constants;
+import org.apache.fop.render.awt.AWTRenderer;
 import org.apache.fop.util.CommandLineLogger;
 
 // commons logging
@@ -68,6 +72,8 @@ public class CommandLineOptions implements Constants {
 
     private FOUserAgent foUserAgent;
     
+    private InputHandler inputHandler;
+    
     private Log log;
 
     private Vector xsltParams = null;
@@ -119,10 +125,24 @@ public class CommandLineOptions implements Constants {
             throw e;
         }
         
-        foUserAgent.setInputHandler(createInputHandler());
+        inputHandler = createInputHandler();
+        
+        if (outputmode == RENDER_AWT) {
+            AWTRenderer renderer = new AWTRenderer();
+            renderer.setRenderable(inputHandler); //set before user agent!
+            renderer.setUserAgent(foUserAgent);
+            foUserAgent.setRendererOverride(renderer);
+        }
     }
 
     /**
+     * @return the InputHandler instance defined by the command-line options.
+     */
+    public InputHandler getInputHandler() {
+        return inputHandler;
+    }
+    
+    /**
      * Get the logger.
      * @return the logger
      */
diff --git a/src/java/org/apache/fop/apps/InputHandler.java b/src/java/org/apache/fop/cli/InputHandler.java
index ec4daa5e7..0de3cc9fe 100644
--- a/src/java/org/apache/fop/apps/InputHandler.java
+++ b/src/java/org/apache/fop/cli/InputHandler.java
@@ -16,7 +16,7 @@
 
 /* $Id$ */
 
-package org.apache.fop.apps;
+package org.apache.fop.cli;
 
 // Imported java.io classes
 import java.io.File;
@@ -34,13 +34,17 @@ import javax.xml.transform.stream.StreamSource;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+import org.apache.fop.apps.FOPException;
+import org.apache.fop.apps.Fop;
+import org.apache.fop.render.awt.viewer.Renderable;
 
 /**
  * Class for handling files input from command line
  * either with XML and XSLT files (and optionally xsl
  * parameters) or FO File input alone
  */
-public class InputHandler implements ErrorListener {
+public class InputHandler implements ErrorListener, Renderable {
+     
     private File sourcefile = null;  // either FO or XML/XSLT usage
     private File stylesheet = null;  // for XML/XSLT usage
     private Vector xsltParams = null; // for XML/XSLT usage
@@ -80,8 +84,7 @@ public class InputHandler implements ErrorListener {
             String baseURL = null;
 
             try {
-                baseURL =
-                    new File(sourcefile.getAbsolutePath()).
+                baseURL = new File(sourcefile.getAbsolutePath()).
                         getParentFile().toURL().toExternalForm();
             } catch (Exception e) {
                 baseURL = "";
@@ -124,22 +127,24 @@ public class InputHandler implements ErrorListener {
         }
     }
     
+    // --- Implementation of the ErrorListener interface ---
+
     /**
-     * Implementation of the ErrorListener interface.
+     * @see javax.xml.transform.ErrorListener#warning(javax.xml.transform.TransformerException)
      */
     public void warning(TransformerException exc) {
         log.warn(exc.toString());
     }
 
     /**
-     * Implementation of the ErrorListener interface.
+     * @see javax.xml.transform.ErrorListener#error(javax.xml.transform.TransformerException)
      */
     public void error(TransformerException exc) {
         log.error(exc.toString());
     }
 
     /**
-     * Implementation of the ErrorListener interface.
+     * @see javax.xml.transform.ErrorListener#fatalError(javax.xml.transform.TransformerException)
      */
     public void fatalError(TransformerException exc)
             throws TransformerException {
diff --git a/src/java/org/apache/fop/cli/Main.java b/src/java/org/apache/fop/cli/Main.java
new file mode 100644
index 000000000..4f05dcab1
--- /dev/null
+++ b/src/java/org/apache/fop/cli/Main.java
@@ -0,0 +1,192 @@
+/*
+ * Copyright 2005 The Apache Software Foundation.
+ *
+ * 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.
+ */
+
+/* $Id$ */
+
+package org.apache.fop.cli;
+
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileFilter;
+import java.io.FileOutputStream;
+import java.lang.reflect.Method;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.List;
+
+import org.apache.fop.apps.FOUserAgent;
+import org.apache.fop.apps.Fop;
+
+/**
+ * Main command-line class for Apache FOP.
+ */
+public class Main {
+
+    /**
+     * @return the list of URLs to all libraries.
+     * @throws MalformedURLException In case there is a problem converting java.io.File
+     * instances to URLs.
+     */
+    public static URL[] getJARList() throws MalformedURLException {
+        File baseDir = new File(".").getAbsoluteFile().getParentFile();
+        File buildDir;
+        if ("build".equals(baseDir.getName())) {
+            buildDir = baseDir;
+            baseDir = baseDir.getParentFile();
+        } else {
+            buildDir = new File(baseDir, "build");
+        }
+        File fopJar = new File(buildDir, "fop.jar");
+        if (!fopJar.exists()) {
+            fopJar = new File(baseDir, "fop.jar");
+        }
+        if (!fopJar.exists()) {
+            throw new RuntimeException("fop.jar not found in directory: " 
+                    + baseDir.getAbsolutePath() + " (or below)");
+        }
+        List jars = new java.util.ArrayList();
+        jars.add(fopJar.toURL());
+        File[] files;
+        FileFilter filter = new FileFilter() {
+            public boolean accept(File pathname) {
+                return pathname.getName().endsWith(".jar");
+            }
+        };
+        File libDir = new File(baseDir, "lib");
+        if (!libDir.exists()) {
+            libDir = baseDir;
+        }
+        files = libDir.listFiles(filter);
+        if (files != null) {
+            for (int i = 0, size = files.length; i < size; i++) {
+                jars.add(files[i].toURL());
+            }
+        }
+        String optionalLib = System.getProperty("fop.optional.lib");
+        if (optionalLib != null) {
+            files = new File(optionalLib).listFiles(filter);
+            if (files != null) {
+                for (int i = 0, size = files.length; i < size; i++) {
+                    jars.add(files[i].toURL());
+                }
+            }
+        }
+        URL[] urls = (URL[])jars.toArray(new URL[jars.size()]);
+        /*
+        for (int i = 0, c = urls.length; i < c; i++) {
+            System.out.println(urls[i]);
+        }*/
+        return urls;
+    }
+    
+    /**
+     * @return true if FOP's dependecies are available in the current ClassLoader setup.
+     */
+    public static boolean checkDependencies() {
+        try {
+            //System.out.println(Thread.currentThread().getContextClassLoader());
+            Class clazz = Class.forName("org.apache.batik.Version");
+            if (clazz != null) {
+                clazz = Class.forName("org.apache.avalon.framework.configuration.Configuration");
+            }
+            return (clazz != null);
+        } catch (Exception e) {
+            return false;
+        }
+    }
+    
+    /**
+     * Dynamically builds a ClassLoader and executes FOP.
+     * @param args command-line arguments
+     */
+    public static void startFOPWithDynamicClasspath(String[] args) {
+        try {
+            URL[] urls = getJARList();
+            //System.out.println("CCL: " 
+            //    + Thread.currentThread().getContextClassLoader().toString());
+            ClassLoader loader = new java.net.URLClassLoader(urls, null);
+            Thread.currentThread().setContextClassLoader(loader);
+            Class clazz = Class.forName("org.apache.fop.cli.Main", true, loader);
+            //System.out.println("CL: " + clazz.getClassLoader().toString());
+            Method mainMethod = clazz.getMethod("startFOP", new Class[] {String[].class});
+            mainMethod.invoke(null, new Object[] {args});
+        } catch (Exception e) {
+            System.err.println("Unable to start FOP:");
+            e.printStackTrace();
+            System.exit(-1);
+        }
+    }
+    
+    /**
+     * Executes FOP with the given ClassLoader setup.
+     * @param args command-line arguments
+     */
+    public static void startFOP(String[] args) {
+        //System.out.println("static CCL: " 
+        //    + Thread.currentThread().getContextClassLoader().toString());
+        //System.out.println("static CL: " + Fop.class.getClassLoader().toString());
+        CommandLineOptions options = null;
+        FOUserAgent foUserAgent = null;
+        BufferedOutputStream bos = null;
+
+        try {
+            options = new CommandLineOptions();
+            options.parse(args);
+            foUserAgent = options.getFOUserAgent();
+            
+            Fop fop = new Fop(options.getRenderer(), foUserAgent);
+
+            try {
+                if (options.getOutputFile() != null) {
+                    bos = new BufferedOutputStream(new FileOutputStream(
+                        options.getOutputFile()));
+                    fop.setOutputStream(bos);
+                    foUserAgent.setOutputFile(options.getOutputFile());
+                }
+                options.getInputHandler().render(fop);
+             } finally {
+                 if (bos != null) {
+                     bos.close();
+                 }
+             }
+
+            // System.exit(0) called to close AWT/SVG-created threads, if any.
+            // AWTRenderer closes with window shutdown, so exit() should not
+            // be called here
+            if (options.getOutputMode() != CommandLineOptions.RENDER_AWT) {
+                System.exit(0);
+            }
+        } catch (Exception e) {
+            if (options != null) {
+                options.getLogger().error("Exception", e);
+            }
+            System.exit(1);
+        }
+    }
+    
+    /**
+     * The main routine for the command line interface
+     * @param args the command line parameters
+     */
+    public static void main(String[] args) {
+        if (checkDependencies()) {
+            startFOP(args);
+        } else {
+            startFOPWithDynamicClasspath(args);
+        }
+    }
+
+}
diff --git a/src/java/org/apache/fop/cli/package.html b/src/java/org/apache/fop/cli/package.html
new file mode 100644
index 000000000..8363121fd
--- /dev/null
+++ b/src/java/org/apache/fop/cli/package.html
@@ -0,0 +1,6 @@
+<HTML>

+<TITLE>org.apache.fop.cli Package</TITLE>

+<BODY>

+<P>This package contains the command-line client for Apache FOP.</P>

+</BODY>

+</HTML>
\ No newline at end of file
diff --git a/src/java/org/apache/fop/render/awt/AWTRenderer.java b/src/java/org/apache/fop/render/awt/AWTRenderer.java
index b790d43a1..5287bd15d 100644
--- a/src/java/org/apache/fop/render/awt/AWTRenderer.java
+++ b/src/java/org/apache/fop/render/awt/AWTRenderer.java
@@ -44,6 +44,7 @@ import org.apache.fop.area.PageViewport;
 import org.apache.fop.datatypes.ColorType;
 import org.apache.fop.fo.properties.ColorTypeProperty;
 import org.apache.fop.render.awt.viewer.PreviewDialog;
+import org.apache.fop.render.awt.viewer.Renderable;
 import org.apache.fop.render.awt.viewer.Translator;
 import org.apache.fop.render.java2d.Java2DRenderer;
 
@@ -73,6 +74,12 @@ public class AWTRenderer extends Java2DRenderer implements Pageable {
     protected PreviewDialog frame;
 
     /**
+     * Renderable instance that can be used to reload and re-render a document after 
+     * modifications.
+     */
+    protected Renderable renderable;
+    
+    /**
      * Creates a new AWTRenderer instance.
      */
     public AWTRenderer() {
@@ -88,6 +95,15 @@ public class AWTRenderer extends Java2DRenderer implements Pageable {
     }
 
     /**
+     * A Renderable instance can be set so the Preview Dialog can enable the "Reload" button
+     * which causes the current document to be reprocessed and redisplayed.
+     * @param renderable the Renderable instance.
+     */
+    public void setRenderable(Renderable renderable) {
+        this.renderable = renderable;
+    }
+    
+    /**
      * Sets whether the preview dialog should be created and displayed when
      * the rendering is finished.
      * @param show If false, preview dialog is not shown. True by default
@@ -135,7 +151,7 @@ public class AWTRenderer extends Java2DRenderer implements Pageable {
 
     /** Creates and initialize the AWT Viewer main window */
     private PreviewDialog createPreviewDialog() {
-        frame = new PreviewDialog(userAgent);
+        frame = new PreviewDialog(userAgent, this.renderable);
         frame.addWindowListener(new WindowAdapter() {
             public void windowClosed(WindowEvent we) {
                 System.exit(0);
diff --git a/src/java/org/apache/fop/render/awt/viewer/PreviewDialog.java b/src/java/org/apache/fop/render/awt/viewer/PreviewDialog.java
index 6992689bf..5c0b29faf 100644
--- a/src/java/org/apache/fop/render/awt/viewer/PreviewDialog.java
+++ b/src/java/org/apache/fop/render/awt/viewer/PreviewDialog.java
@@ -68,6 +68,11 @@ public class PreviewDialog extends JFrame {
     protected AWTRenderer renderer;
     /** The FOUserAgent associated with this window */
     protected FOUserAgent foUserAgent;
+    /**
+     * Renderable instance that can be used to reload and re-render a document after 
+     * modifications.
+     */
+    protected Renderable renderable;
 
     /** The JCombobox to rescale the rendered page view */
     private JComboBox scale;
@@ -87,10 +92,13 @@ public class PreviewDialog extends JFrame {
     /**
      * Creates a new PreviewDialog that uses the given renderer.
      * @param foUserAgent the user agent
+     * @param renderable the Renderable instance that is used to reload/re-render a document
+     *                   after modifications.
      */
-    public PreviewDialog(FOUserAgent foUserAgent) {
+    public PreviewDialog(FOUserAgent foUserAgent, Renderable renderable) {
         renderer = (AWTRenderer) foUserAgent.getRendererOverride();
         this.foUserAgent = foUserAgent;
+        this.renderable = renderable;
         translator = renderer.getTranslator();
 
         //Commands aka Actions
@@ -156,7 +164,7 @@ public class PreviewDialog extends JFrame {
         setSize(screen.width * 61 / 100, screen.height * 9 / 10);
 
         //Page view stuff
-        previewPanel = new PreviewPanel(foUserAgent, renderer);
+        previewPanel = new PreviewPanel(foUserAgent, renderable, renderer);
         getContentPane().add(previewPanel, BorderLayout.CENTER);
 
         //Scaling combobox
@@ -232,6 +240,14 @@ public class PreviewDialog extends JFrame {
     }
 
     /**
+     * Creates a new PreviewDialog that uses the given renderer.
+     * @param foUserAgent the user agent
+     */
+    public PreviewDialog(FOUserAgent foUserAgent) {
+        this(foUserAgent, null);
+    }
+    
+    /**
      * Creates a new menubar to be shown in this window.
      * @return the newly created menubar
      */
@@ -246,7 +262,7 @@ public class PreviewDialog extends JFrame {
             }
         });
         // inputHandler must be set to allow reloading
-        if (foUserAgent.getInputHandler() != null) {
+        if (renderable != null) {
             menu.add(new Command(translator.getString("Menu.Reload"), KeyEvent.VK_R) {
                 public void doit() {
                     reload();
diff --git a/src/java/org/apache/fop/render/awt/viewer/PreviewPanel.java b/src/java/org/apache/fop/render/awt/viewer/PreviewPanel.java
index b568ddeb2..18436ac53 100644
--- a/src/java/org/apache/fop/render/awt/viewer/PreviewPanel.java
+++ b/src/java/org/apache/fop/render/awt/viewer/PreviewPanel.java
@@ -13,6 +13,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
+/* $Id$ */
+
 package org.apache.fop.render.awt.viewer;
 
 import java.awt.Color;
@@ -100,6 +103,11 @@ public class PreviewPanel extends JPanel {
 
     /** The FOUserAgent associated with this panel - often shared with PreviewDialog */
     protected FOUserAgent foUserAgent;
+    /**
+     * Renderable instance that can be used to reload and re-render a document after 
+     * modifications.
+     */
+    protected Renderable renderable;
     /** The number of the page which is currently selected */
     private int currentPage = 0;
 
@@ -136,10 +144,13 @@ public class PreviewPanel extends JPanel {
     /**
      * Creates a new PreviewPanel instance.
      * @param foUserAgent the user agent
+     * @param renderable the Renderable instance that is used to reload/re-render a document
+     *                   after modifications.
      * @param renderer the AWT Renderer instance to paint with
      */
-    public PreviewPanel(FOUserAgent foUserAgent, AWTRenderer renderer) {
+    public PreviewPanel(FOUserAgent foUserAgent, Renderable renderable, AWTRenderer renderer) {
         super(new GridLayout(1, 1));
+        this.renderable = renderable;
         this.renderer = renderer;
         this.foUserAgent = foUserAgent;
 
@@ -284,7 +295,7 @@ public class PreviewPanel extends JPanel {
                 // do not allow the reloading while FOP is still rendering
                 JOptionPane.showMessageDialog(previewArea,
                         "Cannot perform the requested operation until "
-                                + "all page are rendererd. Please wait",
+                                + "all page are rendered. Please wait",
                         "Please wait ", 1 /* INFORMATION_MESSAGE */);
                 return;
             }
@@ -325,9 +336,9 @@ public class PreviewPanel extends JPanel {
             }
 
             try {
-                if (foUserAgent.getInputHandler() != null) {
+                if (renderable != null) {
                     renderer.clearViewportList();
-                    foUserAgent.getInputHandler().render(fop);
+                    renderable.render(fop);
                 }
             } catch (FOPException e) {
                 e.printStackTrace();
diff --git a/src/java/org/apache/fop/render/awt/viewer/Renderable.java b/src/java/org/apache/fop/render/awt/viewer/Renderable.java
new file mode 100644
index 000000000..dc25243ee
--- /dev/null
+++ b/src/java/org/apache/fop/render/awt/viewer/Renderable.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2005 The Apache Software Foundation.
+ *
+ * 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.
+ */
+
+/* $Id$ */
+
+package org.apache.fop.render.awt.viewer;
+
+import org.apache.fop.apps.FOPException;
+import org.apache.fop.apps.Fop;
+
+/**
+ * The interface is used by the AWT preview dialog to reload a document.
+ */
+public interface Renderable {
+
+    /**
+     * Renders the pre-setup document.
+     * @param fop the Fop instance to do the FO processing with
+     * @exception FOPException if the FO processing fails
+     */
+    void render(Fop fop) throws FOPException;
+    
+}
diff --git a/src/java/org/apache/fop/tools/TestConverter.java b/src/java/org/apache/fop/tools/TestConverter.java
index 601c14944..04bcac275 100644
--- a/src/java/org/apache/fop/tools/TestConverter.java
+++ b/src/java/org/apache/fop/tools/TestConverter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 1999-2004 The Apache Software Foundation.
+ * Copyright 1999-2005 The Apache Software Foundation.
  * 
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -27,7 +27,7 @@ import javax.xml.parsers.DocumentBuilderFactory;
 
 import org.apache.fop.apps.Fop;
 import org.apache.fop.apps.FOUserAgent;
-import org.apache.fop.apps.InputHandler;
+import org.apache.fop.cli.InputHandler;
 import org.apache.fop.tools.anttasks.FileCompare;
 import org.w3c.dom.Document;
 import org.w3c.dom.Node;
diff --git a/src/java/org/apache/fop/tools/anttasks/Fop.java b/src/java/org/apache/fop/tools/anttasks/Fop.java
index a26febb40..49d64c961 100644
--- a/src/java/org/apache/fop/tools/anttasks/Fop.java
+++ b/src/java/org/apache/fop/tools/anttasks/Fop.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 1999-2004 The Apache Software Foundation.
+ * Copyright 1999-2005 The Apache Software Foundation.
  * 
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -34,10 +34,10 @@ import java.net.MalformedURLException;
 import java.util.List;
 
 // FOP
-import org.apache.fop.apps.InputHandler;
 import org.apache.fop.fo.Constants;
 import org.apache.fop.apps.FOPException;
 import org.apache.fop.apps.FOUserAgent;
+import org.apache.fop.cli.InputHandler;
 
 import org.apache.commons.logging.impl.SimpleLog;
 import org.apache.commons.logging.Log;