X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.scenegraph%2Fsrc%2Forg%2Fsimantics%2Fscenegraph%2Fg2d%2Fevents%2FEventHandlerReflection.java;h=27ae9517ee0fa595de927ea6b9941dea367fe6eb;hb=bdb7180f6425b460b8566a3223b319caf9dbc56f;hp=c3bbd467662e01813c69fb1d854e9d0f9a5293d8;hpb=86e91ef31d25e4d5950cae130754846d15119c61;p=simantics%2Fplatform.git
diff --git a/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/events/EventHandlerReflection.java b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/events/EventHandlerReflection.java
index c3bbd4676..27ae9517e 100644
--- a/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/events/EventHandlerReflection.java
+++ b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/events/EventHandlerReflection.java
@@ -1,163 +1,163 @@
-/*******************************************************************************
- * Copyright (c) 2007, 2010 Association for Decentralized Information Management
- * in Industry THTH ry.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- * VTT Technical Research Centre of Finland - initial API and implementation
- *******************************************************************************/
-/*
- *
- * @author Toni Kalajainen
- */
-package org.simantics.scenegraph.g2d.events;
-
-import java.lang.annotation.ElementType;
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-import java.lang.annotation.Target;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * @author Toni Kalajainen
- */
-public class EventHandlerReflection {
-
- @Retention(RetentionPolicy.RUNTIME)
- @Target(ElementType.METHOD)
- public static @interface EventHandler {
- int priority();
- }
-
- /**
- * Scans an object with reflection for all event handler methods and returns
- * an array of IEventHandler and priorities.
- *
- * The corresponding class of obj must contain methods that meet the
- * following criteria: 1) must return boolean 2) 1 argument, which is Event
- * 3) has annotation EventHandler 4) may not throw any Exception 5) method
- * must be accessible
- *
- * Example:
- *
- * @EventHandler(priority = Integer.MAX_VALUE) public boolean
- * handleEvent(Event e) { return false; }
- *
- * @param obj object to scan
- * @return an array of painters and their priorities
- */
- @SuppressWarnings("unchecked")
- public static EventHandlerDefinition[] getEventHandlers(final Object obj) {
- List result = new ArrayList();
- Class clazz = obj.getClass();
-
- for (final Method m : clazz.getMethods()) {
- EventHandler anno = (EventHandler) m.getAnnotation(EventHandler.class);
- if (anno == null)
- continue;
-
- Class returnType = m.getReturnType();
- if (!returnType.equals(boolean.class))
- throw new RuntimeException(clazz.getName() + "." + m.getName() + " return type is invalid");
-
- @SuppressWarnings("rawtypes")
- Class[] argTypes = m.getParameterTypes();
- if (argTypes.length != 1 || !Event.class.isAssignableFrom(argTypes[0]))
- throw new RuntimeException(clazz.getName() + "." + m.getName() + " invalid arguments");
-
- @SuppressWarnings("rawtypes")
- Class argClass = argTypes[0];
-
- @SuppressWarnings("rawtypes")
- Class[] exceptionTypes = m.getExceptionTypes();
- if (exceptionTypes.length != 0)
- throw new RuntimeException(clazz.getName() + "." + m.getName() + " invalid exceptions");
-
- int priority = anno.priority();
-
- try {
- m.setAccessible(true);
- } catch (Throwable t) {
- t.printStackTrace();
- continue;
- }
-
- final int eventMask = EventTypes.toTypeMask(argClass);
-
- IEventHandler eventHandler = new IEventHandler() {
- @Override
- public int getEventMask() {
- return eventMask;
- }
- @Override
- public boolean handleEvent(Event e1) {
- try {
- return (Boolean) m.invoke(obj, e1);
- } catch (IllegalArgumentException e) {
- throw new Error(e);
- } catch (IllegalAccessException e) {
- throw new RuntimeException(e);
- } catch (InvocationTargetException e) {
- throw new RuntimeException(e.getCause());
- }
- }
- };
- EventHandlerDefinition handler = new EventHandlerDefinition(obj, eventHandler, priority, argClass);
- result.add(handler);
- }
-
- return result.toArray(new EventHandlerDefinition[0]);
- }
-
- public final static class EventHandlerDefinition {
- public final Object obj;
- public final IEventHandler origEventHandler;
- public final IEventHandler eventHandler;
- public final int priority;
- public final Class eventSuperClass;
-
- public EventHandlerDefinition(Object obj, IEventHandler eventHandler, int priority, Class eventSuperClass) {
- this.obj = obj;
- this.priority = priority;
- this.eventSuperClass = eventSuperClass;
- this.origEventHandler = eventHandler;
- final int eventMask = EventTypes.toTypeMask(eventSuperClass);
- if (eventSuperClass.equals(Event.class)) {
- this.eventHandler = eventHandler;
- } else {
- this.eventHandler = new IEventHandler() {
- @Override
- public int getEventMask() {
- return eventMask;
- }
-
- @Override
- public boolean handleEvent(Event e) {
- // Event masking already taken care of, no need to check eventMask
- if (EventHandlerDefinition.this.eventSuperClass.isAssignableFrom(e.getClass()))
- return EventHandlerDefinition.this.origEventHandler.handleEvent(e);
- return false;
- }
-
- @Override
- public String toString() {
- return EventHandlerDefinition.this.toString();
- }
- };
- }
- }
-
- @Override
- public String toString() {
- return String.format("[%11d] %s (%s)", priority, obj.getClass().getSimpleName(),
- eventSuperClass.getSimpleName());
- }
- }
-
-}
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+/*
+ *
+ * @author Toni Kalajainen
+ */
+package org.simantics.scenegraph.g2d.events;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @author Toni Kalajainen
+ */
+public class EventHandlerReflection {
+
+ @Retention(RetentionPolicy.RUNTIME)
+ @Target(ElementType.METHOD)
+ public static @interface EventHandler {
+ int priority();
+ }
+
+ /**
+ * Scans an object with reflection for all event handler methods and returns
+ * an array of IEventHandler and priorities.
+ *
+ * The corresponding class of obj must contain methods that meet the
+ * following criteria: 1) must return boolean 2) 1 argument, which is Event
+ * 3) has annotation EventHandler 4) may not throw any Exception 5) method
+ * must be accessible
+ *
+ * Example:
+ *
+ * @EventHandler(priority = Integer.MAX_VALUE) public boolean
+ * handleEvent(Event e) { return false; }
+ *
+ * @param obj object to scan
+ * @return an array of painters and their priorities
+ */
+ @SuppressWarnings("unchecked")
+ public static EventHandlerDefinition[] getEventHandlers(final Object obj) {
+ List result = new ArrayList();
+ Class clazz = obj.getClass();
+
+ for (final Method m : clazz.getMethods()) {
+ EventHandler anno = (EventHandler) m.getAnnotation(EventHandler.class);
+ if (anno == null)
+ continue;
+
+ Class returnType = m.getReturnType();
+ if (!returnType.equals(boolean.class))
+ throw new RuntimeException(clazz.getName() + "." + m.getName() + " return type is invalid");
+
+ @SuppressWarnings("rawtypes")
+ Class[] argTypes = m.getParameterTypes();
+ if (argTypes.length != 1 || !Event.class.isAssignableFrom(argTypes[0]))
+ throw new RuntimeException(clazz.getName() + "." + m.getName() + " invalid arguments");
+
+ @SuppressWarnings("rawtypes")
+ Class argClass = argTypes[0];
+
+ @SuppressWarnings("rawtypes")
+ Class[] exceptionTypes = m.getExceptionTypes();
+ if (exceptionTypes.length != 0)
+ throw new RuntimeException(clazz.getName() + "." + m.getName() + " invalid exceptions");
+
+ int priority = anno.priority();
+
+ try {
+ m.setAccessible(true);
+ } catch (Throwable t) {
+ t.printStackTrace();
+ continue;
+ }
+
+ final int eventMask = EventTypes.toTypeMask(argClass);
+
+ IEventHandler eventHandler = new IEventHandler() {
+ @Override
+ public int getEventMask() {
+ return eventMask;
+ }
+ @Override
+ public boolean handleEvent(Event e1) {
+ try {
+ return (Boolean) m.invoke(obj, e1);
+ } catch (IllegalArgumentException e) {
+ throw new Error(e);
+ } catch (IllegalAccessException e) {
+ throw new RuntimeException(e);
+ } catch (InvocationTargetException e) {
+ throw new RuntimeException(e.getCause());
+ }
+ }
+ };
+ EventHandlerDefinition handler = new EventHandlerDefinition(obj, eventHandler, priority, argClass);
+ result.add(handler);
+ }
+
+ return result.toArray(new EventHandlerDefinition[0]);
+ }
+
+ public final static class EventHandlerDefinition {
+ public final Object obj;
+ public final IEventHandler origEventHandler;
+ public final IEventHandler eventHandler;
+ public final int priority;
+ public final Class eventSuperClass;
+
+ public EventHandlerDefinition(Object obj, IEventHandler eventHandler, int priority, Class eventSuperClass) {
+ this.obj = obj;
+ this.priority = priority;
+ this.eventSuperClass = eventSuperClass;
+ this.origEventHandler = eventHandler;
+ final int eventMask = EventTypes.toTypeMask(eventSuperClass);
+ if (eventSuperClass.equals(Event.class)) {
+ this.eventHandler = eventHandler;
+ } else {
+ this.eventHandler = new IEventHandler() {
+ @Override
+ public int getEventMask() {
+ return eventMask;
+ }
+
+ @Override
+ public boolean handleEvent(Event e) {
+ // Event masking already taken care of, no need to check eventMask
+ if (EventHandlerDefinition.this.eventSuperClass.isAssignableFrom(e.getClass()))
+ return EventHandlerDefinition.this.origEventHandler.handleEvent(e);
+ return false;
+ }
+
+ @Override
+ public String toString() {
+ return EventHandlerDefinition.this.toString();
+ }
+ };
+ }
+ }
+
+ @Override
+ public String toString() {
+ return String.format("[%11d] %s (%s)", priority, obj.getClass().getSimpleName(),
+ eventSuperClass.getSimpleName());
+ }
+ }
+
+}