The same problem exists with the current ScreenStringRenderer interface.

You can extend ModelWidgetVisitor to include your custom widgets:

public interface MyVisitor extends ModelWidgetVisitor {
    void visit(MyWidget myWidget);
}

and then your custom widget's accept method would look like this:

@Override
public void accept(ModelWidgetVisitor visitor) {
    if (visitor instanceof MyVisitor) {
        ((MyVisitor)visitor).visit(this);
    }
}


Adrian Crum
Sandglass Software
www.sandglass-software.com

On 11/2/2014 10:03 AM, Chatree Srichart wrote:
Hi Adrian*,*

OFBiz uses ServiceLoader.load() to load widget loaders from

[CLASSPATH]/META-INF/services/org.ofbiz.widget.WidgetLoader

That means it allows us to create a custom widget loader with custom widgets

However, your ModelWidgetVisitor class limit a number of widget classes to
send to visit() method.

I think it should use generic type like this:

public interface ModelWidgetVisitor<T extends ModelWidget> {

     void visit(T t);
}

Best Regards,
Chatree Srichart

On Sat, Nov 1, 2014 at 11:57 PM, <[email protected]> wrote:

Author: adrianc
Date: Sat Nov  1 16:57:07 2014
New Revision: 1635990

URL: http://svn.apache.org/r1635990
Log:
Add a screen widget model visitor. This will enable us to externalize a
lot of unrelated code that has been included in the models, as well as
provide a cleaner API for the renderers.

Added:

ofbiz/trunk/framework/widget/src/org/ofbiz/widget/ModelWidgetVisitor.java
Modified:
     ofbiz/trunk/framework/widget/src/org/ofbiz/widget/ModelWidget.java
     ofbiz/trunk/framework/widget/src/org/ofbiz/widget/form/ModelForm.java
     ofbiz/trunk/framework/widget/src/org/ofbiz/widget/menu/ModelMenu.java

ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/HtmlWidget.java

ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/IterateSectionWidget.java

ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/ModelScreen.java

ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/ModelScreenWidget.java
     ofbiz/trunk/framework/widget/src/org/ofbiz/widget/tree/ModelTree.java

Modified:
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/ModelWidget.java
URL:
http://svn.apache.org/viewvc/ofbiz/trunk/framework/widget/src/org/ofbiz/widget/ModelWidget.java?rev=1635990&r1=1635989&r2=1635990&view=diff

==============================================================================
--- ofbiz/trunk/framework/widget/src/org/ofbiz/widget/ModelWidget.java
(original)
+++ ofbiz/trunk/framework/widget/src/org/ofbiz/widget/ModelWidget.java Sat
Nov  1 16:57:07 2014
@@ -53,6 +53,8 @@ public abstract class ModelWidget implem
          this.startLine = ((Integer)
widgetElement.getUserData("startLine")).intValue();
      }

+    public abstract void accept(ModelWidgetVisitor visitor);
+
      /**
       * Returns the widget's name.
       * @return Widget's name

Added:
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/ModelWidgetVisitor.java
URL:
http://svn.apache.org/viewvc/ofbiz/trunk/framework/widget/src/org/ofbiz/widget/ModelWidgetVisitor.java?rev=1635990&view=auto

==============================================================================
---
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/ModelWidgetVisitor.java
(added)
+++
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/ModelWidgetVisitor.java
Sat Nov  1 16:57:07 2014
@@ -0,0 +1,87 @@

+/*******************************************************************************
+ * 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.ofbiz.widget;
+
+import org.ofbiz.widget.form.ModelForm;
+import org.ofbiz.widget.menu.ModelMenu;
+import org.ofbiz.widget.screen.HtmlWidget;
+import org.ofbiz.widget.screen.IterateSectionWidget;
+import org.ofbiz.widget.screen.ModelScreen;
+import org.ofbiz.widget.screen.ModelScreenWidget;
+import org.ofbiz.widget.tree.ModelTree;
+
+/**
+ *  A <code>ModelWidget</code> visitor.
+ */
+public interface ModelWidgetVisitor {
+
+    void visit(HtmlWidget htmlWidget);
+
+    void visit(HtmlWidget.HtmlTemplate htmlTemplate);
+
+    void visit(HtmlWidget.HtmlTemplateDecorator htmlTemplateDecorator);
+
+    void visit(HtmlWidget.HtmlTemplateDecoratorSection
htmlTemplateDecoratorSection);
+
+    void visit(IterateSectionWidget iterateSectionWidget);
+
+    void visit(ModelForm modelForm);
+
+    void visit(ModelMenu modelMenu);
+
+    void visit(ModelScreen modelScreen);
+
+    void visit(ModelScreenWidget.ColumnContainer columnContainer);
+
+    void visit(ModelScreenWidget.Container container);
+
+    void visit(ModelScreenWidget.Content content);
+
+    void visit(ModelScreenWidget.DecoratorScreen decoratorScreen);
+
+    void visit(ModelScreenWidget.DecoratorSection decoratorSection);
+
+    void visit(ModelScreenWidget.DecoratorSectionInclude
decoratorSectionInclude);
+
+    void visit(ModelScreenWidget.Form form);
+
+    void visit(ModelScreenWidget.HorizontalSeparator horizontalSeparator);
+
+    void visit(ModelScreenWidget.Image image);
+
+    void visit(ModelScreenWidget.IncludeScreen includeScreen);
+
+    void visit(ModelScreenWidget.Label label);
+
+    void visit(ModelScreenWidget.Link link);
+
+    void visit(ModelScreenWidget.Menu menu);
+
+    void visit(ModelScreenWidget.PlatformSpecific platformSpecific);
+
+    void visit(ModelScreenWidget.PortalPage portalPage);
+
+    void visit(ModelScreenWidget.Screenlet screenlet);
+
+    void visit(ModelScreenWidget.Section section);
+
+    void visit(ModelScreenWidget.Tree tree);
+
+    void visit(ModelTree modelTree);
+}

Modified:
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/form/ModelForm.java
URL:
http://svn.apache.org/viewvc/ofbiz/trunk/framework/widget/src/org/ofbiz/widget/form/ModelForm.java?rev=1635990&r1=1635989&r2=1635990&view=diff

==============================================================================
--- ofbiz/trunk/framework/widget/src/org/ofbiz/widget/form/ModelForm.java
(original)
+++ ofbiz/trunk/framework/widget/src/org/ofbiz/widget/form/ModelForm.java
Sat Nov  1 16:57:07 2014
@@ -57,6 +57,7 @@ import org.ofbiz.service.ModelParam;
  import org.ofbiz.service.ModelService;
  import org.ofbiz.webapp.control.ConfigXMLReader;
  import org.ofbiz.widget.ModelWidget;
+import org.ofbiz.widget.ModelWidgetVisitor;
  import org.ofbiz.widget.WidgetWorker;
  import org.w3c.dom.Element;

@@ -3318,4 +3319,9 @@ public class ModelForm extends ModelWidg

          return allRequestsUsed;
      }
+
+    @Override
+    public void accept(ModelWidgetVisitor visitor) {
+        visitor.visit(this);
+    }
  }

Modified:
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/menu/ModelMenu.java
URL:
http://svn.apache.org/viewvc/ofbiz/trunk/framework/widget/src/org/ofbiz/widget/menu/ModelMenu.java?rev=1635990&r1=1635989&r2=1635990&view=diff

==============================================================================
--- ofbiz/trunk/framework/widget/src/org/ofbiz/widget/menu/ModelMenu.java
(original)
+++ ofbiz/trunk/framework/widget/src/org/ofbiz/widget/menu/ModelMenu.java
Sat Nov  1 16:57:07 2014
@@ -30,6 +30,7 @@ import org.ofbiz.base.util.UtilXml;
  import org.ofbiz.base.util.collections.FlexibleMapAccessor;
  import org.ofbiz.base.util.string.FlexibleStringExpander;
  import org.ofbiz.widget.ModelWidget;
+import org.ofbiz.widget.ModelWidgetVisitor;
  import org.w3c.dom.Element;

  /**
@@ -598,4 +599,9 @@ public class ModelMenu extends ModelWidg
      public void setExtraIndex(String extraIndex) {
          this.extraIndex = FlexibleStringExpander.getInstance(extraIndex);
      }
+
+    @Override
+    public void accept(ModelWidgetVisitor visitor) {
+        visitor.visit(this);
+    }
  }

Modified:
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/HtmlWidget.java
URL:
http://svn.apache.org/viewvc/ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/HtmlWidget.java?rev=1635990&r1=1635989&r2=1635990&view=diff

==============================================================================
---
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/HtmlWidget.java
(original)
+++
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/HtmlWidget.java
Sat Nov  1 16:57:07 2014
@@ -37,6 +37,7 @@ import org.ofbiz.base.util.collections.M
  import org.ofbiz.base.util.string.FlexibleStringExpander;
  import org.ofbiz.base.util.template.FreeMarkerWorker;
  import org.ofbiz.widget.ModelWidget;
+import org.ofbiz.widget.ModelWidgetVisitor;
  import org.ofbiz.widget.html.HtmlWidgetRenderer;
  import org.w3c.dom.Element;

@@ -200,6 +201,11 @@ public class HtmlWidget extends ModelScr
          public void renderWidgetString(Appendable writer, Map<String,
Object> context, ScreenStringRenderer screenStringRenderer) {
              renderHtmlTemplate(writer, this.locationExdr, context);
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
      }

      public static class HtmlTemplateDecorator extends ModelScreenWidget {
@@ -240,6 +246,11 @@ public class HtmlWidget extends ModelScr
              renderHtmlTemplate(writer, this.locationExdr, context);
              contextMs.pop();
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
      }

      public static class HtmlTemplateDecoratorSection extends
ModelScreenWidget {
@@ -259,5 +270,15 @@ public class HtmlWidget extends ModelScr
              // render sub-widgets
              renderSubWidgetsString(this.subWidgets, writer, context,
screenStringRenderer);
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
+    }
+
+    @Override
+    public void accept(ModelWidgetVisitor visitor) {
+        visitor.visit(this);
      }
  }

Modified:
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/IterateSectionWidget.java
URL:
http://svn.apache.org/viewvc/ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/IterateSectionWidget.java?rev=1635990&r1=1635989&r2=1635990&view=diff

==============================================================================
---
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/IterateSectionWidget.java
(original)
+++
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/IterateSectionWidget.java
Sat Nov  1 16:57:07 2014
@@ -44,6 +44,7 @@ import org.ofbiz.base.util.collections.F
  import org.ofbiz.base.util.collections.MapStack;
  import org.ofbiz.base.util.string.FlexibleStringExpander;
  import org.ofbiz.webapp.control.RequestHandler;
+import org.ofbiz.widget.ModelWidgetVisitor;
  import org.ofbiz.widget.WidgetWorker;
  import org.w3c.dom.Element;

@@ -351,6 +352,11 @@ public class IterateSectionWidget extend
          writer.append("</table>\n");

      }
+
+    @Override
+    public void accept(ModelWidgetVisitor visitor) {
+        visitor.visit(this);
+    }
  }



Modified:
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/ModelScreen.java
URL:
http://svn.apache.org/viewvc/ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/ModelScreen.java?rev=1635990&r1=1635989&r2=1635990&view=diff

==============================================================================
---
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/ModelScreen.java
(original)
+++
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/ModelScreen.java
Sat Nov  1 16:57:07 2014
@@ -38,6 +38,7 @@ import org.ofbiz.service.LocalDispatcher
  import org.ofbiz.webapp.control.ConfigXMLReader;
  import org.ofbiz.widget.ModelWidget;
  import org.ofbiz.widget.ModelWidgetAction;
+import org.ofbiz.widget.ModelWidgetVisitor;
  import org.w3c.dom.Element;

  /**
@@ -75,6 +76,11 @@ public class ModelScreen extends ModelWi
          this.section = new ModelScreenWidget.Section(this,
sectionElement, true);
      }

+    @Override
+    public void accept(ModelWidgetVisitor visitor) {
+        visitor.visit(this);
+    }
+
      public String getTransactionTimeout() {
          return transactionTimeoutExdr.getOriginal();
      }

Modified:
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/ModelScreenWidget.java
URL:
http://svn.apache.org/viewvc/ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/ModelScreenWidget.java?rev=1635990&r1=1635989&r2=1635990&view=diff

==============================================================================
---
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/ModelScreenWidget.java
(original)
+++
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/screen/ModelScreenWidget.java
Sat Nov  1 16:57:07 2014
@@ -46,6 +46,7 @@ import org.ofbiz.entity.condition.Entity
  import org.ofbiz.entity.util.EntityQuery;
  import org.ofbiz.widget.ModelWidget;
  import org.ofbiz.widget.ModelWidgetAction;
+import org.ofbiz.widget.ModelWidgetVisitor;
  import org.ofbiz.widget.PortalPageWorker;
  import org.ofbiz.widget.WidgetFactory;
  import org.ofbiz.widget.WidgetWorker;
@@ -241,6 +242,11 @@ public abstract class ModelScreenWidget
          }

          @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
+
+        @Override
          public void renderWidgetString(Appendable writer, Map<String,
Object> context, ScreenStringRenderer screenStringRenderer) throws
GeneralException, IOException {
              // check the condition, if there is one
              boolean condTrue = true;
@@ -331,6 +337,11 @@ public abstract class ModelScreenWidget
          }

          @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
+
+        @Override
          public void renderWidgetString(Appendable writer, Map<String,
Object> context, ScreenStringRenderer screenStringRenderer) throws
GeneralException, IOException {
              try {
                  screenStringRenderer.renderColumnContainer(writer,
context, this);
@@ -437,6 +448,11 @@ public abstract class ModelScreenWidget
          public List<ModelScreenWidget> getSubWidgets() {
              return subWidgets;
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
      }

      public static final class Screenlet extends ModelScreenWidget {
@@ -594,6 +610,11 @@ public abstract class ModelScreenWidget
          public Menu getTabMenu() {
              return this.tabMenu;
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
      }

      public static final class HorizontalSeparator extends
ModelScreenWidget {
@@ -619,6 +640,11 @@ public abstract class ModelScreenWidget
          public String getStyle(Map<String, Object> context) {
              return this.styleExdr.expandString(context);
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
      }

      public static final class IncludeScreen extends ModelScreenWidget {
@@ -685,6 +711,11 @@ public abstract class ModelScreenWidget
              // defaults to false, so anything but true is false
              return "true".equals(shareScopeString);
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
      }

      public static final class DecoratorScreen extends ModelScreenWidget {
@@ -744,6 +775,11 @@ public abstract class ModelScreenWidget
          public Map<String, DecoratorSection> getSectionMap() {
              return sectionMap;
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
      }

      public static final class DecoratorSection extends ModelScreenWidget {
@@ -766,6 +802,11 @@ public abstract class ModelScreenWidget
          public List<ModelScreenWidget> getSubWidgets() {
              return subWidgets;
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
      }

      public static final class DecoratorSectionInclude extends
ModelScreenWidget {
@@ -796,6 +837,11 @@ public abstract class ModelScreenWidget
                  }
              }
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
      }

      public static final class Label extends ModelScreenWidget {
@@ -846,6 +892,11 @@ public abstract class ModelScreenWidget
          public String getStyle(Map<String, Object> context) {
              return this.styleExdr.expandString(context);
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
      }

      public static final class Form extends ModelScreenWidget {
@@ -921,6 +972,11 @@ public abstract class ModelScreenWidget
              // defaults to false, so anything but true is false
              return "true".equals(shareScopeString);
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
      }

      public static final class Tree extends ModelScreenWidget {
@@ -998,6 +1054,11 @@ public abstract class ModelScreenWidget
              // defaults to false, so anything but true is false
              return "true".equals(shareScopeString);
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
      }

      public static final class PlatformSpecific extends ModelScreenWidget {
@@ -1037,6 +1098,11 @@ public abstract class ModelScreenWidget
                  subWidget.renderWidgetString(writer, context,
screenStringRenderer);
              }
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
      }

      public static final class Content extends ModelScreenWidget {
@@ -1175,6 +1241,11 @@ public abstract class ModelScreenWidget
          public String getBorder() {
              return this.border;
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
      }

      public static final class SubContent extends ModelScreenWidget {
@@ -1236,6 +1307,12 @@ public abstract class ModelScreenWidget
          public boolean xmlEscape() {
              return this.xmlEscape;
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            // TODO Auto-generated method stub
+
+        }
      }

      public static final class Menu extends ModelScreenWidget {
@@ -1282,6 +1359,11 @@ public abstract class ModelScreenWidget
          public String getLocation(Map<String, Object> context) {
              return this.locationExdr.expandString(context);
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
      }

      public static final class Link extends ModelScreenWidget {
@@ -1455,6 +1537,11 @@ public abstract class ModelScreenWidget

              return fullParameterMap;
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
      }

      public static final class Image extends ModelScreenWidget {
@@ -1531,6 +1618,11 @@ public abstract class ModelScreenWidget
          public String getUrlMode() {
              return this.urlMode;
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
      }

      public static final class PortalPage extends ModelScreenWidget {
@@ -1696,6 +1788,11 @@ public abstract class ModelScreenWidget
          public String getUsePrivate() {
              return Boolean.toString(this.usePrivate);
          }
+
+        @Override
+        public void accept(ModelWidgetVisitor visitor) {
+            visitor.visit(this);
+        }
      }

  }

Modified:
ofbiz/trunk/framework/widget/src/org/ofbiz/widget/tree/ModelTree.java
URL:
http://svn.apache.org/viewvc/ofbiz/trunk/framework/widget/src/org/ofbiz/widget/tree/ModelTree.java?rev=1635990&r1=1635989&r2=1635990&view=diff

==============================================================================
--- ofbiz/trunk/framework/widget/src/org/ofbiz/widget/tree/ModelTree.java
(original)
+++ ofbiz/trunk/framework/widget/src/org/ofbiz/widget/tree/ModelTree.java
Sat Nov  1 16:57:07 2014
@@ -50,6 +50,7 @@ import org.ofbiz.entity.model.ModelField
  import org.ofbiz.entity.util.EntityListIterator;
  import org.ofbiz.service.LocalDispatcher;
  import org.ofbiz.widget.ModelWidget;
+import org.ofbiz.widget.ModelWidgetVisitor;
  import org.ofbiz.widget.WidgetWorker;
  import org.ofbiz.widget.screen.ModelScreen;
  import org.ofbiz.widget.screen.ScreenFactory;
@@ -1106,6 +1107,9 @@ public class ModelTree extends ModelWidg
              }
          }
      }
-}
-

+    @Override
+    public void accept(ModelWidgetVisitor visitor) {
+        visitor.visit(this);
+    }
+}




Reply via email to