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com.gwtplatform.mvp.rebind.NonLeafTabContentProxyOutputter Maven / Gradle / Ivy
/*
* Copyright 2011 ArcBees Inc.
*
* 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.gwtplatform.mvp.rebind;
import java.util.ArrayList;
import java.util.List;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.core.ext.typeinfo.JField;
import com.google.gwt.core.ext.typeinfo.TypeOracle;
import com.google.gwt.user.rebind.ClassSourceFileComposerFactory;
import com.google.gwt.user.rebind.SourceWriter;
import com.gwtplatform.mvp.client.annotations.ChangeTab;
import com.gwtplatform.mvp.client.annotations.RequestTabs;
import com.gwtplatform.mvp.client.annotations.TabInfo;
/**
* Proxy outputter for a proxy corresponding to a presenter which is displayed within a
* {@link com.gwtplatform.mvp.client.TabContainerPresenter TabContainerPresenter}.
*/
public class NonLeafTabContentProxyOutputter extends ProxyOutputterBase {
private JClassType tabContainerClass;
private String tabContainerClassName;
private Integer tabPriority;
private String tabLabel;
private TabInfoMethod tabInfoMethod;
private String targetNameToken;
private String nameToken;
private String requestTabsFieldName;
private String changeTabFieldName;
public NonLeafTabContentProxyOutputter(TypeOracle oracle,
TreeLogger logger,
ClassCollection classCollection,
GinjectorInspector ginjectorInspector,
PresenterInspector presenterInspector) {
super(oracle, logger, classCollection, ginjectorInspector, presenterInspector);
}
@Override
public void writeInnerClasses(SourceWriter writer) {
}
@Override
void writeSubclassMethods(SourceWriter writer) throws UnableToCompleteException {
writeGetTabDataInternalMethod(writer);
}
@Override
void writeSubclassDelayedBind(SourceWriter writer) {
writeRequestTabHandler(writer);
presenterInspector.writeProviderAssignation(writer);
presenterInspector.writeContentSlotHandlerRegistration(writer);
}
@Override
String getSuperclassName() {
return ClassCollection.nonLeafTabContentProxyImplClassName;
}
public void setNameToken(String nameToken) {
this.nameToken = nameToken;
}
private void writeGetTabDataInternalMethod(SourceWriter writer) throws UnableToCompleteException {
if (tabLabel != null) {
// Simple string tab label
writer.println();
writer.println("protected TabData getTabDataInternal("
+ ginjectorInspector.getGinjectorClassName() + " ginjector) {");
writer.indent();
writer.println("return new TabDataBasic(\"" + tabLabel + "\", " + tabPriority + ");");
writer.outdent();
writer.println("}");
} else {
tabInfoMethod.writeGetTabDataInternalMethod(writer);
}
}
private void writeRequestTabHandler(SourceWriter writer) {
writer.println("requestTabsEventType = " + tabContainerClassName + "."
+ requestTabsFieldName + ";");
if (changeTabFieldName != null) {
writer.println("changeTabEventType = " + tabContainerClassName + "."
+ changeTabFieldName + ";");
}
writer.println("tabData = getTabDataInternal(ginjector);");
writer.println("targetHistoryToken = \"" + getTargetNameToken() + "\";");
writer.println("addRequestTabsHandler();");
}
@Override
void initSubclass(JClassType proxyInterface) throws UnableToCompleteException {
tabInfoMethod = presenterInspector.findTabInfoMethod();
TabInfo tabInfoAnnotation = proxyInterface.getAnnotation(TabInfo.class);
ensureExactlyOneTabInfoAnnotation(tabInfoAnnotation);
tabPriority = null;
tabLabel = null;
if (tabInfoMethod == null) {
findTabPriority(tabInfoAnnotation);
findTabLabel(tabInfoAnnotation);
targetNameToken = tabInfoAnnotation.nameToken();
tabContainerClassName = tabInfoAnnotation.container().getCanonicalName();
} else {
targetNameToken = tabInfoMethod.getNameToken();
tabContainerClassName = tabInfoMethod.getTabContainerClassName();
}
ensureNameTokenIsValid();
findTabContainerClass();
findRequestTabsFieldName();
findChangeTabFieldName();
}
private void findRequestTabsFieldName() throws UnableToCompleteException {
ClassInspector tabContainerInspector = new ClassInspector(logger, tabContainerClass);
List requestTabsFields = new ArrayList();
tabContainerInspector.collectStaticAnnotatedFields(classCollection.typeClass,
classCollection.requestTabsHandlerClass, RequestTabs.class, requestTabsFields);
if (requestTabsFields.size() == 0) {
logger.log(TreeLogger.ERROR, "Did not find any static field annotated with @"
+ RequestTabs.class.getSimpleName() + " on the container '"
+ tabContainerClassName + "' while building proxy for presenter '"
+ presenterInspector.getPresenterClassName() + "'.", null);
throw new UnableToCompleteException();
}
if (requestTabsFields.size() > 1) {
logger.log(TreeLogger.ERROR, "Found the annotation @" + RequestTabs.class.getSimpleName()
+ " on more than one field in '" + tabContainerClassName
+ "'. This is not allowed.", null);
throw new UnableToCompleteException();
}
requestTabsFieldName = requestTabsFields.get(0).getName();
}
private void findChangeTabFieldName() throws UnableToCompleteException {
ClassInspector tabContainerInspector = new ClassInspector(logger, tabContainerClass);
List changeTabFields = new ArrayList();
tabContainerInspector.collectStaticAnnotatedFields(classCollection.typeClass,
classCollection.changeTabHandlerClass, ChangeTab.class, changeTabFields);
if (changeTabFields.size() > 1) {
logger.log(TreeLogger.ERROR, "Found the annotation @" + ChangeTab.class.getSimpleName()
+ " on more than one field in '" + tabContainerClassName
+ "'. This is not allowed.", null);
throw new UnableToCompleteException();
}
if (changeTabFields.size() == 0) {
changeTabFieldName = null;
} else {
changeTabFieldName = changeTabFields.get(0).getName();
}
}
private void findTabContainerClass() throws UnableToCompleteException {
if (tabContainerClassName == null) {
logger.log(TreeLogger.ERROR, "The @" + TabInfo.class.getSimpleName()
+ " in " + presenterInspector.getPresenterClassName()
+ " must define the 'container' parameter.", null);
throw new UnableToCompleteException();
}
tabContainerClass = oracle.findType(tabContainerClassName);
if (tabContainerClass == null) {
logger.log(TreeLogger.ERROR, "The container '" + tabContainerClassName + "' in @"
+ TabInfo.class.getSimpleName() + " for '" + presenterInspector.getPresenterClassName()
+ "' was not found.", null);
throw new UnableToCompleteException();
}
}
private void ensureNameTokenIsValid() throws UnableToCompleteException {
if (targetNameToken.length() == 0) {
targetNameToken = null;
}
if (targetNameToken != null && nameToken != null) {
logger.log(TreeLogger.ERROR, "The @" + TabInfo.class.getSimpleName() + " in "
+ presenterInspector.getPresenterClassName() + " defines the 'nameToken' parameter but "
+ "its proxy is a place, this is not permitted.", null);
throw new UnableToCompleteException();
}
if (targetNameToken == null && nameToken == null) {
logger.log(TreeLogger.ERROR, "The @" + TabInfo.class.getSimpleName() + " in "
+ presenterInspector.getPresenterClassName() + " does not define the 'nameToken' "
+ "parameter and its proxy is not a place, this is not permitted.", null);
throw new UnableToCompleteException();
}
}
private void findTabLabel(TabInfo tabInfoAnnotation)
throws UnableToCompleteException {
if (tabInfoAnnotation.label().length() > 0) {
tabLabel = tabInfoAnnotation.label();
}
if (tabLabel == null) {
logger.log(TreeLogger.ERROR, "The @" + TabInfo.class.getSimpleName()
+ " annotating a proxy in " + presenterInspector.getPresenterClassName()
+ " must define the 'label' parameter.", null);
throw new UnableToCompleteException();
}
}
private void findTabPriority(TabInfo tabInfoAnnotation) {
tabPriority = tabInfoAnnotation.priority();
if (tabPriority < 0) {
tabPriority = null;
}
}
private void ensureExactlyOneTabInfoAnnotation(TabInfo tabInfoAnnotation)
throws UnableToCompleteException {
if (tabInfoAnnotation != null && tabInfoMethod != null) {
logger.log(TreeLogger.ERROR, "Presenter " + presenterInspector.getPresenterClassName()
+ " contains both a proxy and a method annotated with @' +"
+ TabInfo.class.getSimpleName() + ". This is illegal.", null);
throw new UnableToCompleteException();
}
if (tabInfoAnnotation == null && tabInfoMethod == null) {
logger.log(TreeLogger.ERROR, "The proxy for '" + presenterInspector.getPresenterClassName()
+ "' is a NonLeafTabContentProxy but is not annotated with @' +"
+ TabInfo.class.getSimpleName()
+ " and its presenter has no method annotated with it either.", null);
throw new UnableToCompleteException();
}
}
@Override
void addSubclassImports(ClassSourceFileComposerFactory composerFactory) {
}
private String getTargetNameToken() {
if (targetNameToken != null) {
return targetNameToken;
}
return nameToken;
}
}
