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/*******************************************************************************
* Copyright (c) 2003, 2005 IBM Corporation and others.
* 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
/*
* Created on Mar 25, 2004
*
* To change the template for this generated file go to
* Window>Preferences>Java>Code Generation>Code and Comments
*/
package org.eclipse.jst.common.jdt.internal.integration.ui;
import java.lang.reflect.InvocationTargetException;
import java.text.MessageFormat;
import java.util.List;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.Signature;
import org.eclipse.jdt.core.ToolFactory;
import org.eclipse.jdt.core.formatter.CodeFormatter;
import org.eclipse.jdt.core.jdom.IDOMField;
import org.eclipse.jdt.core.jdom.IDOMMethod;
import org.eclipse.jdt.ui.JavaUI;
import org.eclipse.jem.util.logger.proxy.Logger;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.Document;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.jst.common.jdt.internal.integration.JavaInsertionHelper;
import org.eclipse.text.edits.MalformedTreeException;
import org.eclipse.text.edits.TextEdit;
import org.eclipse.ui.IEditorInput;
import org.eclipse.wst.common.frameworks.internal.operations.IHeadlessRunnableWithProgress;
/**
* @author DABERG
*
* To change the template for this generated type comment go to Window>Preferences>Java>Code
* Generation>Code and Comments
*/
public class JavaInsertionOperation implements IHeadlessRunnableWithProgress {
private static final String NEW_LINE = System.getProperty("line.separator"); //$NON-NLS-1$
protected JavaInsertionHelper insertionHelper;
protected IEditorInput editorInput;
protected IDocument document;
protected ITextSelection textSelection;
protected IProgressMonitor monitor;
/**
*
*/
public JavaInsertionOperation(JavaInsertionHelper insertionHelper, IEditorInput editorInput, IDocument document, ITextSelection textSelection) {
super();
this.insertionHelper = insertionHelper;
this.editorInput = editorInput;
this.document = document;
this.textSelection = textSelection;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.wst.common.frameworks.internal.operation.IHeadlessRunnableWithProgress#run(org.eclipse.core.runtime.IProgressMonitor)
*/
public void run(IProgressMonitor monitorArg) throws InvocationTargetException, InterruptedException {
this.monitor = monitorArg;
insertCodeSnippet();
processJavaHelper();
}
/**
*
*/
protected void insertCodeSnippet() throws InvocationTargetException {
String replacementString = insertionHelper.getInsertionString();
if (replacementString == null || replacementString.length() == 0)
return;
if (textSelection == null)
throw new RuntimeException("No text selection for inserting text."); //$NON-NLS-1$
try {
document.replace(textSelection.getOffset(), textSelection.getLength(), replacementString);
} catch (BadLocationException e) {
throw new InvocationTargetException(e);
}
int start = textSelection.getStartLine();
int lines = document.computeNumberOfLines(replacementString) + 1;
format(document, start, lines, 0);
}
protected void processJavaHelper() {
ICompilationUnit cu = JavaUI.getWorkingCopyManager().getWorkingCopy(editorInput);
if (cu != null) {
IType type = null;
try {
type = cu.getTypes()[0];
} catch (JavaModelException e) {
//Ignore
}
if (type != null) {
if (insertionHelper.hasFields())
createFields(type, insertionHelper.getFields());
if (insertionHelper.hasMethods())
createMethods(type, insertionHelper.getMethods());
if (insertionHelper.hasImports())
createImports(cu, insertionHelper.getImportStatements());
executeExtendedOperations();
}
}
}
/**
*
*/
private void executeExtendedOperations() {
List ops = insertionHelper.getExtendedOperations();
if (ops != null) {
for (int i = 0; i < ops.size(); i++)
executedExtendedOperation((IHeadlessRunnableWithProgress) ops.get(i));
}
}
/**
* @param operation
*/
private void executedExtendedOperation(IHeadlessRunnableWithProgress operation) {
try {
operation.run(null);
} catch (Exception e) {
Logger log = Logger.getLogger();
log.log("Executing extended operation failed: " + operation); //$NON-NLS-1$
log.log(e);
}
}
protected void createFields(IType aType, List fields) {
IDOMField field;
for (int i = 0; i < fields.size(); i++) {
field = (IDOMField) fields.get(i);
if (!aType.getField(field.getName()).exists()) {
try {
aType.createField(format(field.getContents(), 1, true), null, true, null);
} catch (JavaModelException e) {
Logger.getLogger().logError(e);
}
}
}
}
/**
* @param wc
*/
protected void createMethods(IType aType, List methods) {
IDOMMethod method;
for (int i = 0; i < methods.size(); i++) {
method = (IDOMMethod) methods.get(i);
if (!aType.getMethod(method.getName(), getParamaterTypeSignatures(method)).exists()) {
try {
aType.createMethod(format(method.getContents(), 1, true), null, true, null);
} catch (JavaModelException e) {
Logger.getLogger().logError(e);
}
}
}
}
protected void createImports(ICompilationUnit cu, List imports) {
String importStmt;
for (int i = 0; i < imports.size(); i++) {
importStmt = (String) imports.get(i);
if (!cu.getImport(importStmt).exists() && !importStmt.startsWith("java.lang")) { //$NON-NLS-1$
try {
cu.createImport(importStmt, null, null);
} catch (JavaModelException e) {
Logger.getLogger().logError(e);
}
}
}
}
protected String format(String contents, int indent, boolean ensureEndLineReturn) {
Document doc = new Document(contents);
int lines = doc.getNumberOfLines();
format(doc, 0, lines - 1, indent);
String result = doc.get();
if (ensureEndLineReturn)
result = ensureLineReturn(result);
return result;
}
protected void format(IDocument documentArg, int startLine, int lines, int indent) {
try {
int end = documentArg.getLineOffset(startLine + lines);
int length = end - startLine;
CodeFormatter formatter = ToolFactory.createCodeFormatter(null);
TextEdit edit = formatter.format(CodeFormatter.K_UNKNOWN, documentArg.get(), startLine, length, indent, null);
if (edit != null) {
try {
edit.apply(documentArg);
} catch (MalformedTreeException e) {
//Ignore
}
}
} catch (BadLocationException e) {
Logger log = Logger.getLogger();
log.log("Failed to format text."); //$NON-NLS-1$
log.log(e);
}
}
protected String formatString(String pattern, String[] arguments) {
return MessageFormat.format(pattern, arguments);
}
/**
* @param result
* @return
*/
protected String ensureLineReturn(String aString) {
if (!aString.endsWith(NEW_LINE))
return aString + NEW_LINE;
return aString;
}
protected String[] getParamaterTypeSignatures(IDOMMethod aMethod) {
String[] result = null;
String[] parms = aMethod.getParameterTypes();
if (parms != null) {
if (parms.length == 0)
result = parms;
else
result = new String[parms.length];
boolean isResolved = false;
String parm;
for (int i = 0; i < parms.length; i++) {
parm = parms[i];
isResolved = parm.indexOf('.') > 0;
result[i] = Signature.createTypeSignature(parm, isResolved);
}
}
return result;
}
}
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