| /* |
| * Copyright 2000-2014 JetBrains s.r.o. |
| * |
| * 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 com.intellij.openapi.extensions.impl; |
| |
| import com.intellij.openapi.extensions.*; |
| import com.intellij.openapi.progress.ProcessCanceledException; |
| import com.intellij.util.pico.AssignableToComponentAdapter; |
| import com.intellij.util.pico.ConstructorInjectionComponentAdapter; |
| import com.intellij.util.xmlb.XmlSerializer; |
| import org.jdom.Element; |
| import org.jetbrains.annotations.NotNull; |
| import org.picocontainer.*; |
| import org.picocontainer.defaults.CachingComponentAdapter; |
| |
| /** |
| * @author Alexander Kireyev |
| * todo: optimize memory print |
| */ |
| public class ExtensionComponentAdapter implements LoadingOrder.Orderable, AssignableToComponentAdapter { |
| public static final ExtensionComponentAdapter[] EMPTY_ARRAY = new ExtensionComponentAdapter[0]; |
| |
| private Object myComponentInstance; |
| private final String myImplementationClassName; |
| private final Element myExtensionElement; |
| private final PicoContainer myContainer; |
| private final PluginDescriptor myPluginDescriptor; |
| private final boolean myDeserializeInstance; |
| private ComponentAdapter myDelegate; |
| private Class myImplementationClass; |
| private boolean myNotificationSent = false; |
| |
| public ExtensionComponentAdapter(@NotNull String implementationClass, |
| Element extensionElement, |
| PicoContainer container, |
| PluginDescriptor pluginDescriptor, |
| boolean deserializeInstance) { |
| myImplementationClassName = implementationClass; |
| myExtensionElement = extensionElement; |
| myContainer = container; |
| myPluginDescriptor = pluginDescriptor; |
| myDeserializeInstance = deserializeInstance; |
| } |
| |
| @Override |
| public Object getComponentKey() { |
| return this; |
| } |
| |
| @Override |
| public Class getComponentImplementation() { |
| return loadClass(myImplementationClassName); |
| } |
| |
| @Override |
| public Object getComponentInstance(final PicoContainer container) throws PicoException, ProcessCanceledException { |
| if (myComponentInstance == null) { |
| try { |
| if (Element.class.equals(getComponentImplementation())) { |
| myComponentInstance = myExtensionElement; |
| } |
| else { |
| Object componentInstance = getDelegate().getComponentInstance(container); |
| |
| if (myDeserializeInstance) { |
| try { |
| XmlSerializer.deserializeInto(componentInstance, myExtensionElement); |
| } |
| catch (Exception e) { |
| throw new PicoInitializationException(e); |
| } |
| } |
| |
| ExtensionInitializer initializer = (ExtensionInitializer)container.getComponentInstance(ExtensionInitializer.class); |
| if (initializer != null) { |
| initializer.initExtension(componentInstance); |
| } |
| |
| myComponentInstance = componentInstance; |
| } |
| } |
| catch (ProcessCanceledException e) { |
| throw e; |
| } |
| catch (Throwable t) { |
| PluginId pluginId = myPluginDescriptor != null ? myPluginDescriptor.getPluginId() : null; |
| throw new PicoPluginExtensionInitializationException(t.getMessage(), t, pluginId); |
| } |
| |
| if (myComponentInstance instanceof PluginAware) { |
| PluginAware pluginAware = (PluginAware)myComponentInstance; |
| pluginAware.setPluginDescriptor(myPluginDescriptor); |
| } |
| } |
| |
| return myComponentInstance; |
| } |
| |
| @Override |
| public void verify(PicoContainer container) throws PicoIntrospectionException { |
| throw new UnsupportedOperationException("Method verify is not supported in " + getClass()); |
| } |
| |
| @Override |
| public void accept(PicoVisitor visitor) { |
| throw new UnsupportedOperationException("Method accept is not supported in " + getClass()); |
| } |
| |
| public Object getExtension() { |
| return getComponentInstance(myContainer); |
| } |
| |
| @Override |
| public LoadingOrder getOrder() { |
| return LoadingOrder.readOrder(myExtensionElement.getAttributeValue("order")); |
| } |
| |
| @Override |
| public String getOrderId() { |
| return myExtensionElement.getAttributeValue("id"); |
| } |
| |
| private Element getExtensionElement() { |
| return myExtensionElement; |
| } |
| |
| @Override |
| public Element getDescribingElement() { |
| return getExtensionElement(); |
| } |
| |
| public PluginId getPluginName() { |
| return myPluginDescriptor.getPluginId(); |
| } |
| |
| public PluginDescriptor getPluginDescriptor() { |
| return myPluginDescriptor; |
| } |
| |
| private Class loadClass(final String className) { |
| if (myImplementationClass == null) { |
| try { |
| ClassLoader classLoader = myPluginDescriptor != null ? myPluginDescriptor.getPluginClassLoader() : getClass().getClassLoader(); |
| if (classLoader == null) { |
| classLoader = getClass().getClassLoader(); |
| } |
| myImplementationClass = Class.forName(className, false, classLoader); |
| } |
| catch (ClassNotFoundException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| return myImplementationClass; |
| } |
| |
| private synchronized ComponentAdapter getDelegate() { |
| if (myDelegate == null) { |
| Class impl = loadClass(myImplementationClassName); |
| myDelegate = new CachingComponentAdapter(new ConstructorInjectionComponentAdapter(getComponentKey(), impl, null, true)); |
| } |
| |
| return myDelegate; |
| } |
| |
| @Override |
| public boolean isAssignableTo(Class aClass) { |
| return aClass.getName().equals(myImplementationClassName); |
| } |
| |
| @Override |
| public String getAssignableToClassName() { |
| return myImplementationClassName; |
| } |
| |
| public boolean isNotificationSent() { |
| return myNotificationSent; |
| } |
| |
| public void setNotificationSent(boolean notificationSent) { |
| myNotificationSent = notificationSent; |
| } |
| |
| @Override |
| public String toString() { |
| return "ExtensionComponentAdapter[" + myImplementationClassName + "]: plugin=" + myPluginDescriptor; |
| } |
| } |