/*
* Copyright 2006 Cypal Solutions (tools@cypal.in)
*
* 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 in.cypal.studio.gwt.core.builder;
import in.cypal.studio.gwt.core.Activator;
import in.cypal.studio.gwt.core.common.Constants;
import in.cypal.studio.gwt.core.common.GwtProject;
import in.cypal.studio.gwt.core.common.Preferences;
import in.cypal.studio.gwt.core.common.Util;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResourceDelta;
import org.eclipse.core.resources.IncrementalProjectBuilder;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.SubProgressMonitor;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IPackageFragment;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.dom.AST;
import org.eclipse.jdt.core.dom.ASTParser;
import org.eclipse.jdt.core.dom.CompilationUnit;
import org.eclipse.jdt.core.dom.FieldDeclaration;
import org.eclipse.jdt.core.dom.ImportDeclaration;
import org.eclipse.jdt.core.dom.Javadoc;
import org.eclipse.jdt.core.dom.MethodDeclaration;
import org.eclipse.jdt.core.dom.PrimitiveType;
import org.eclipse.jdt.core.dom.SingleVariableDeclaration;
import org.eclipse.jdt.core.dom.TagElement;
import org.eclipse.jdt.core.dom.TypeDeclaration;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.Document;
import org.eclipse.text.edits.TextEdit;
/**
* @author Prakash G.R.
*
*/
public class GwtBuilder extends IncrementalProjectBuilder {
GwtProject gwtProject;
protected IProject[] build(int kind, Map args, IProgressMonitor monitor) throws CoreException {
monitor = Util.getNonNullMonitor(monitor);
try {
monitor.beginTask("Building GWT sources...", 2);
gwtProject = GwtProject.create(getProject());
//Do a update of Async files only if the preference is not set. If set, its manual
if(!Preferences.getBoolean(Constants.UPDATE_ASYNC_PREFERENCE, true))
updateAsyncFiles(new SubProgressMonitor(monitor, 1));
//Do a compile only in full build and preference is set.
if (kind == IncrementalProjectBuilder.FULL_BUILD && Preferences.getBoolean(Constants.COMPILE_AT_FULLBUILD_PREFERENCE, true)) {
gwtProject.doCompile();
}
} catch (Exception e) {
Activator.logException(e);
monitor.setCanceled(true);
} finally {
monitor.done();
}
return null;
}
private void updateAsyncFiles(IProgressMonitor monitor) throws CoreException, BadLocationException {
monitor = Util.getNonNullMonitor(monitor);
try {
IResourceDelta delta = getDelta(getProject());
List remoteServices = gwtProject.getRemoteServices(delta);
monitor.beginTask("Updating Async files...", remoteServices.size());
for (Iterator i = remoteServices.iterator(); i.hasNext();) {
IFile aRemoteServiceFile = (IFile) i.next();
IPackageFragment clientPackage = (IPackageFragment) JavaCore.create(aRemoteServiceFile.getParent());
ICompilationUnit asyncContents = (ICompilationUnit) JavaCore.create(aRemoteServiceFile);
String source = asyncContents.getBuffer().getContents();
Document document = new Document(source);
ASTParser parser = ASTParser.newParser(AST.JLS3);
parser.setSource(asyncContents);
CompilationUnit astRoot = (CompilationUnit) parser.createAST(null);
AST ast = astRoot.getAST();
astRoot.recordModifications();
// Modify imports (+AsyncCallback, -RemoteService, -*Exception)
List imports = astRoot.imports();
List importsToBeRemoved = new ArrayList();
for (Iterator j = imports.iterator(); j.hasNext();) {
ImportDeclaration anImportDecl = (ImportDeclaration) j.next();
String importName = anImportDecl.getName().getFullyQualifiedName();
if(importName.equals("com.google.gwt.user.client.rpc.RemoteService") || importName.endsWith("Exception")) //$NON-NLS-1$ //$NON-NLS-2$
importsToBeRemoved.add(anImportDecl);
}
imports.removeAll(importsToBeRemoved);
ImportDeclaration importDecl = ast.newImportDeclaration();
importDecl.setName(ast.newName("com.google.gwt.user.client.rpc.AsyncCallback")); //$NON-NLS-1$
astRoot.imports().add(importDecl);
// Add Async to the name
TypeDeclaration aRemoteService = (TypeDeclaration) astRoot.types().get(0);
String remoteServiceAsyncName = aRemoteService.getName().getFullyQualifiedName()+"Async"; //$NON-NLS-1$
aRemoteService.setName(astRoot.getAST().newSimpleName(remoteServiceAsyncName));
// Remote all interfaces
aRemoteService.superInterfaceTypes().clear();
// Change methods, fields and inner classes
List bodyDeclarations = aRemoteService.bodyDeclarations();
List declarationsToDelete = new ArrayList();
for (Iterator k = bodyDeclarations.iterator(); k.hasNext();) {
Object currDeclaration = k.next();
if(currDeclaration instanceof MethodDeclaration) {
// Make return type void
MethodDeclaration aMethod = (MethodDeclaration) currDeclaration;
aMethod.setReturnType2(ast.newPrimitiveType(PrimitiveType.VOID));
// Add AsyncCallback parameter
SingleVariableDeclaration asyncCallbackParam = ast.newSingleVariableDeclaration();
asyncCallbackParam.setName(ast.newSimpleName("callback")); //$NON-NLS-1$
asyncCallbackParam.setType(ast.newSimpleType(ast.newName("AsyncCallback"))); //$NON-NLS-1$
aMethod.parameters().add(asyncCallbackParam);
// Remove throws
aMethod.thrownExceptions().clear();
// Remove @gwt tags
Javadoc jdoc = aMethod.getJavadoc();
if(jdoc != null) {
List tags = jdoc.tags();
List tagsToRemove = new ArrayList();
for(Iterator itTags = tags.iterator(); itTags.hasNext();) {
TagElement tag = (TagElement) itTags.next();
if (tag.toString().contains("@gwt")) {
tagsToRemove.add(tag);
}
}
tags.removeAll(tagsToRemove);
}
}else if(currDeclaration instanceof FieldDeclaration || currDeclaration instanceof TypeDeclaration) {
// Remove the fields and inner classes
declarationsToDelete.add(currDeclaration);
}
}
bodyDeclarations.removeAll(declarationsToDelete);
// computation of the text edits
TextEdit edits = astRoot.rewrite(document, asyncContents.getJavaProject().getOptions(true));
// computation of the new source code
edits.apply(document);
String newSource = document.get();
// update of the compilation unit
clientPackage.createCompilationUnit(remoteServiceAsyncName+".java", newSource, true, monitor); //$NON-NLS-1$
monitor.worked(1);
}
} finally {
monitor.done();
}
}
protected void clean(IProgressMonitor monitor) throws CoreException {
gwtProject = GwtProject.create(getProject());
gwtProject.doClean(monitor);
}
}