Author: ivaynberg
Date: Sun Oct 29 16:14:53 2006
New Revision: 469029
URL: http://svn.apache.org/viewvc?view=rev&rev=469029
Log:
wip: WICKET-23 introduced @OnAttach, @OnDetach
Added:
incubator/wicket/trunk/wicket/src/main/java/wicket/annot/
incubator/wicket/trunk/wicket/src/main/java/wicket/annot/OnAttach.java
incubator/wicket/trunk/wicket/src/main/java/wicket/annot/OnDetach.java
Modified:
incubator/wicket/trunk/wicket/src/main/java/wicket/Component.java
Modified: incubator/wicket/trunk/wicket/src/main/java/wicket/Component.java
URL:
http://svn.apache.org/viewvc/incubator/wicket/trunk/wicket/src/main/java/wicket/Component.java?view=diff&rev=469029&r1=469028&r2=469029
==============================================================================
--- incubator/wicket/trunk/wicket/src/main/java/wicket/Component.java (original)
+++ incubator/wicket/trunk/wicket/src/main/java/wicket/Component.java Sun Oct
29 16:14:53 2006
@@ -19,6 +19,8 @@
package wicket;
import java.io.Serializable;
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
@@ -29,6 +31,8 @@
import org.apache.commons.logging.LogFactory;
import wicket.ajax.AjaxRequestTarget;
+import wicket.annot.OnAttach;
+import wicket.annot.OnDetach;
import wicket.authorization.Action;
import wicket.authorization.AuthorizationException;
import wicket.authorization.IAuthorizationStrategy;
@@ -52,6 +56,8 @@
import wicket.util.convert.IConverter;
import wicket.util.lang.Classes;
import wicket.util.lang.Objects;
+import wicket.util.lang.reflect.ClassOrder;
+import wicket.util.lang.reflect.ReflectionUtils;
import wicket.util.string.PrependingStringBuffer;
import wicket.util.string.Strings;
import wicket.util.value.IValueMap;
@@ -472,6 +478,10 @@
/** Reserved subclass-definable flag bit */
protected static final int FLAG_RESERVED8 = 0x80000;
+ /** empty object[] array used for invoking listener methods */
+ private static final Object[] LISTENER_ARGS = new Object[] {};
+
+
/** Basic model IModelComparator implementation for normal object
models */
private static final IModelComparator defaultModelComparator = new
IModelComparator()
{
@@ -650,9 +660,9 @@
throw new WicketRuntimeException(
"component without a parent is not
allowed, default constructor can only be called by a page");
}
-
+
getApplication().notifyComponentInstantiationListeners(this);
-
+
this.markupFragment = getMarkupFragment();
}
@@ -1783,7 +1793,7 @@
// attach
internalAttach();
-
+
// check authorization
// first the component itself
// (after attach as otherwise list views etc
wont work)
@@ -1804,7 +1814,7 @@
}
});
}
-
+
// Render the component and all its children
onBeforeRender();
render(markupStream);
@@ -2708,8 +2718,48 @@
{
onAttach();
internalOnAttach();
+
+ List<Method> listeners =
ReflectionUtils.invocationChainForAnnotation(getClass(),
+ OnAttach.class, ClassOrder.SUPER_TO_SUB);
+ for (Method method : listeners)
+ {
+ invokeAnnotatedListenerMethod(method, OnAttach.class);
+ }
+ }
+
+ /**
+ * Invokes a listener method
+ *
+ * @param method
+ * listener method
+ * @param annot
+ * annotation responsible for invocation
+ */
+ private void invokeAnnotatedListenerMethod(Method method, Class<?
extends Annotation> annot)
+ {
+ if (!method.getReturnType().equals(void.class) ||
method.getParameterTypes().length != 0)
+ {
+ throw new IllegalStateException("Method [[" +
method.getName()
+ + "]] cannot be annotated with [[" +
OnAttach.class.getSimpleName()
+ + "]] because it doesnt match signature
[[void method()]]");
+ }
+ try
+ {
+ if (!method.isAccessible())
+ {
+ method.setAccessible(true);
+ }
+ method.invoke(this, LISTENER_ARGS);
+ }
+ catch (Exception e)
+ {
+ throw new WicketRuntimeException("Error while invoking
listener method [["
+ + method.getName() + "]] for [[" +
annot.getClass().getSimpleName()
+ + "]] event", e);
+ }
}
+
/**
* THIS METHOD IS NOT PART OF THE WICKET PUBLIC API. DO NOT CALL OR
* OVERRIDE.
@@ -2720,6 +2770,14 @@
{
internalOnDetach();
onDetach();
+
+ List<Method> listeners =
ReflectionUtils.invocationChainForAnnotation(getClass(),
+ OnDetach.class, ClassOrder.SUB_TO_SUPER);
+ for (Method method : listeners)
+ {
+ invokeAnnotatedListenerMethod(method, OnAttach.class);
+ }
+
}
/**
Added: incubator/wicket/trunk/wicket/src/main/java/wicket/annot/OnAttach.java
URL:
http://svn.apache.org/viewvc/incubator/wicket/trunk/wicket/src/main/java/wicket/annot/OnAttach.java?view=auto&rev=469029
==============================================================================
--- incubator/wicket/trunk/wicket/src/main/java/wicket/annot/OnAttach.java
(added)
+++ incubator/wicket/trunk/wicket/src/main/java/wicket/annot/OnAttach.java Sun
Oct 29 16:14:53 2006
@@ -0,0 +1,48 @@
+/*
+ * $Id: org.eclipse.jdt.ui.prefs 5004 2006-03-17 20:47:08 -0800 (Fri, 17 Mar
2006) eelco12 $
+ * $Revision: 5004 $
+ * $Date: 2006-03-17 20:47:08 -0800 (Fri, 17 Mar 2006) $
+ *
+ *
==============================================================================
+ * 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.
+ */
+package wicket.annot;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Methods annotated with this annotation are invoked when the object is
+ * attached by the framework.
+ *
+ * Objects are always attached once per request before any method on the object
+ * is invoked by the framework during that request.
+ *
+ * Supported object types:
+ * <ul>
+ * <li> Component </li>
+ * <li> Session </li>
+ * <li> RequestCycle </li>
+ * </ul>
+ *
+ * FIXME so far only Componnet is supported
+ *
+ * @author ivaynberg
+ */
[EMAIL PROTECTED](ElementType.METHOD)
[EMAIL PROTECTED](RetentionPolicy.RUNTIME)
+public @interface OnAttach {
+
+}
Added: incubator/wicket/trunk/wicket/src/main/java/wicket/annot/OnDetach.java
URL:
http://svn.apache.org/viewvc/incubator/wicket/trunk/wicket/src/main/java/wicket/annot/OnDetach.java?view=auto&rev=469029
==============================================================================
--- incubator/wicket/trunk/wicket/src/main/java/wicket/annot/OnDetach.java
(added)
+++ incubator/wicket/trunk/wicket/src/main/java/wicket/annot/OnDetach.java Sun
Oct 29 16:14:53 2006
@@ -0,0 +1,48 @@
+/*
+ * $Id: org.eclipse.jdt.ui.prefs 5004 2006-03-17 20:47:08 -0800 (Fri, 17 Mar
2006) eelco12 $
+ * $Revision: 5004 $
+ * $Date: 2006-03-17 20:47:08 -0800 (Fri, 17 Mar 2006) $
+ *
+ *
==============================================================================
+ * 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.
+ */
+package wicket.annot;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Methods annotated with this annotation are invoked when the object is
+ * detached by the framework.
+ *
+ * Objects are always detached at the end of the request. This is the last
+ * action the framework performs on the object.
+ *
+ * Supported object types:
+ * <ul>
+ * <li> Component </li>
+ * <li> Session </li>
+ * <li> RequestCycle </li>
+ * </ul>
+ *
+ * FIXME so far only Component is supported
+ *
+ * @author ivaynberg
+ */
[EMAIL PROTECTED](ElementType.METHOD)
[EMAIL PROTECTED](RetentionPolicy.RUNTIME)
+public @interface OnDetach {
+
+}
