/*******************************************************************************
* Copyright © 2008, 2013 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
*
*******************************************************************************/
package org.eclipse.edt.ide.rui.document.utils;
import java.util.List;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.Status;
import org.eclipse.edt.compiler.core.ast.Assignment;
import org.eclipse.edt.compiler.core.ast.ClassDataDeclaration;
import org.eclipse.edt.compiler.core.ast.DefaultASTVisitor;
import org.eclipse.edt.compiler.core.ast.Expression;
import org.eclipse.edt.compiler.core.ast.FunctionDataDeclaration;
import org.eclipse.edt.compiler.core.ast.NewExpression;
import org.eclipse.edt.compiler.core.ast.Node;
import org.eclipse.edt.compiler.core.ast.SettingsBlock;
import org.eclipse.edt.compiler.core.ast.SimpleName;
import org.eclipse.edt.compiler.core.ast.Type;
import org.eclipse.edt.ide.core.ast.rewrite.ASTRewrite;
import org.eclipse.edt.ide.core.model.EGLCore;
import org.eclipse.edt.ide.core.model.EGLModelException;
import org.eclipse.edt.ide.core.model.IEGLFile;
import org.eclipse.edt.ide.core.model.document.IEGLDocument;
import org.eclipse.edt.ide.rui.internal.Activator;
import org.eclipse.edt.ide.ui.internal.EGLUI;
import org.eclipse.edt.mof.utils.NameUtile;
import org.eclipse.jface.text.BadLocationException;
/**
* Insert Widget Reference and update the Z order of the declared widgets
*/
public class SetEventValueOperation {
private IEGLDocument currentDocument;
private IFile currentFile;
public SetEventValueOperation(IEGLDocument currentDocument, IFile currentFile){
this.currentDocument = currentDocument;
this.currentFile = currentFile;
}
public void setEventValue(final String eventName, final String eventValue, final int widgetOffset, final int widgetLength){
try{
IEGLFile modelFile = (IEGLFile)EGLCore.create(currentFile);
IEGLFile sharedWorkingCopy = (IEGLFile)modelFile.getSharedWorkingCopy(null, EGLUI.getBufferFactory(), null);
sharedWorkingCopy.open(null);
sharedWorkingCopy.reconcile(false, null);
try{
final org.eclipse.edt.compiler.core.ast.File fileAST = currentDocument.getNewModelEGLFile();
final Node widgetReference = DocumentUtil.getWidgetNode(currentDocument,widgetOffset, widgetLength);
//TODO: How do we want to handle invalid offsets?
if(widgetReference != null){
widgetReference.accept(new DefaultASTVisitor(){
public boolean visit(final NewExpression newExpression){
// This widget is anonymous
try{
if(newExpression.hasSettingsBlock()){
SettingsBlock settingsBlockOpt = newExpression.getSettingsBlock();
AssignmentLocator assignmentLocator = new AssignmentLocator(NameUtile.getAsName(eventName));
settingsBlockOpt.accept(assignmentLocator);
Assignment setting = assignmentLocator.getAssignment();
if(setting != null){
// Found a setting to replace
ASTRewrite rewrite = ASTRewrite.create(fileAST);
rewrite.setText(setting, eventName + " ::= " + eventValue);
rewrite.rewriteAST(currentDocument).apply(currentDocument);
}else{
addEvent(eventName, eventValue, fileAST, settingsBlockOpt);
}
}else{
// Add the settings block and the setting
ASTRewrite rewrite = ASTRewrite.create(fileAST);
rewrite.setText(newExpression, newExpression.getCanonicalString() + "{ " + eventName + " ::= " + eventValue + " }");
rewrite.rewriteAST(currentDocument).apply(currentDocument);
}
}catch(BadLocationException e){
Activator.getDefault().getLog().log(new Status(Status.ERROR, Activator.PLUGIN_ID, "Set Event: Error processing new expression", e));
}
return false;
}
public boolean visit(final SimpleName simpleName){
Node parentNode = simpleName.getParent();
if(parentNode != null){
parentNode.accept(new DefaultASTVisitor(){
public boolean visit(ClassDataDeclaration classDataDeclaration){
try{
SettingsBlock fieldSettingsBlock = null;
SettingsBlock initializerSettingsBlock = null;
NewExpression initializer = null;
// Find this class fields settings block and its initializer if it has one
// If it has an initializer, get its settings block as well
if(classDataDeclaration.hasSettingsBlock()){
fieldSettingsBlock = classDataDeclaration.getSettingsBlockOpt();
}
if(classDataDeclaration.hasInitializer()){
Expression theInitializer = classDataDeclaration.getInitializer();
InitializerLocator locator = new InitializerLocator();
theInitializer.accept(locator);
initializer = locator.getInitializer();
if(initializer != null && initializer.hasSettingsBlock()){
initializerSettingsBlock = initializer.getSettingsBlock();
}
}
// Attempt to locate the setting in each of the settings block we found previously
// If we find it in one block, we do not look in the other
Assignment setting = null;
if(fieldSettingsBlock != null){
AssignmentLocator assignmentLocator = new AssignmentLocator(NameUtile.getAsName(eventName));
fieldSettingsBlock.accept(assignmentLocator);
setting = assignmentLocator.getAssignment();
}
if(setting == null && initializerSettingsBlock != null){
AssignmentLocator assignmentLocator = new AssignmentLocator(NameUtile.getAsName(eventName));
initializerSettingsBlock.accept(assignmentLocator);
setting = assignmentLocator.getAssignment();
}
if(setting != null){
// Found a setting to replace
ASTRewrite rewrite = ASTRewrite.create(fileAST);
rewrite.setText(setting, eventName + " ::= " + eventValue);
rewrite.rewriteAST(currentDocument).apply(currentDocument);
}else{
// See if we have a settings block to add the setting too
if(fieldSettingsBlock != null || initializerSettingsBlock != null){
// try to add to the initializer block first
if(initializerSettingsBlock != null){
// Add the setting to the initialzer settings block
addEvent(eventName, eventValue, fileAST, initializerSettingsBlock);
}else{
// Add the setting to the class field settings block
addEvent(eventName, eventValue, fileAST, fieldSettingsBlock);
}
}else{
// We have to create a settings block and add the setting
// Try to add the settings block to an initializer first
if(initializer != null){
// Add the settings block and the setting
ASTRewrite rewrite = ASTRewrite.create(fileAST);
Type type = initializer.getType();
rewrite.setText(type, type.getCanonicalName() + "{ " + eventName + " ::= " + eventValue + " }");
rewrite.rewriteAST(currentDocument).apply(currentDocument);
}else{
// Add the settings block and the setting
ASTRewrite rewrite = ASTRewrite.create(fileAST);
Type type = classDataDeclaration.getType();
rewrite.setText(type, type.getCanonicalName() + "{ " + eventName + " ::= " + eventValue + " }");
rewrite.rewriteAST(currentDocument).apply(currentDocument);
}
}
}
}catch(BadLocationException e){
Activator.getDefault().getLog().log(new Status(Status.ERROR, Activator.PLUGIN_ID, "Set Event: Error processing class field expression", e));
}
return false;
}
public boolean visit(FunctionDataDeclaration functionDataDeclaration){
try{
SettingsBlock fieldSettingsBlock = null;
SettingsBlock initializerSettingsBlock = null;
NewExpression initializer = null;
// Find this class fields settings block and its initializer if it has one
// If it has an initializer, get its settings block as well
if(functionDataDeclaration.hasSettingsBlock()){
fieldSettingsBlock = functionDataDeclaration.getSettingsBlockOpt();
}
if(functionDataDeclaration.hasInitializer()){
Expression theInitializer = functionDataDeclaration.getInitializer();
InitializerLocator locator = new InitializerLocator();
theInitializer.accept(locator);
initializer = locator.getInitializer();
if(initializer != null && initializer.hasSettingsBlock()){
initializerSettingsBlock = initializer.getSettingsBlock();
}
}
// Attempt to locate the setting in each of the settings block we found previously
// If we find it in one block, we do not look in the other
Assignment setting = null;
if(fieldSettingsBlock != null){
AssignmentLocator assignmentLocator = new AssignmentLocator(NameUtile.getAsName(eventName));
fieldSettingsBlock.accept(assignmentLocator);
setting = assignmentLocator.getAssignment();
}
if(setting == null && initializerSettingsBlock != null){
AssignmentLocator assignmentLocator = new AssignmentLocator(NameUtile.getAsName(eventName));
initializerSettingsBlock.accept(assignmentLocator);
setting = assignmentLocator.getAssignment();
}
if(setting != null){
// Found a setting to replace
ASTRewrite rewrite = ASTRewrite.create(fileAST);
rewrite.setText(setting, eventName + " ::= " + eventValue);
rewrite.rewriteAST(currentDocument).apply(currentDocument);
}else{
// See if we have a settings block to add the setting too
if(fieldSettingsBlock != null || initializerSettingsBlock != null){
// try to add to the initializer block first
if(initializerSettingsBlock != null){
// Add the setting to the initialzer settings block
addEvent(eventName, eventValue, fileAST, initializerSettingsBlock);
}else{
// Add the setting to the class field settings block
addEvent(eventName, eventValue, fileAST, fieldSettingsBlock);
}
}else{
// We have to create a settings block and add the setting
// Try to add the settings block to an initializer first
if(initializer != null){
// Add the settings block and the setting
ASTRewrite rewrite = ASTRewrite.create(fileAST);
Type type = initializer.getType();
rewrite.setText(type, type.getCanonicalName() + "{ " + eventName + " ::= " + eventValue + " }");
rewrite.rewriteAST(currentDocument).apply(currentDocument);
}else{
// Add the settings block and the setting
ASTRewrite rewrite = ASTRewrite.create(fileAST);
Type type = functionDataDeclaration.getType();
rewrite.setText(type, type.getCanonicalName() + "{ " + eventName + " ::= " + eventValue + " }");
rewrite.rewriteAST(currentDocument).apply(currentDocument);
}
}
}
}catch(BadLocationException e){
Activator.getDefault().getLog().log(new Status(Status.ERROR, Activator.PLUGIN_ID, "Set Event: Error processing function field expression", e));
}
return false;
}
});
}
return false;
}
});
}
}catch(Exception e){
Activator.getDefault().getLog().log(new Status(Status.ERROR, Activator.PLUGIN_ID, "Set Event: Error setting event", e));
}finally{
sharedWorkingCopy.destroy();
}
}catch(EGLModelException e){
Activator.getDefault().getLog().log(new Status(Status.ERROR, Activator.PLUGIN_ID, "Set Event: Error creating working copy", e));
}
}
private void addEvent(final String eventName, final String eventValue,
final org.eclipse.edt.compiler.core.ast.File fileAST,
SettingsBlock settingsBlockOpt) throws BadLocationException {
List settings = settingsBlockOpt.getSettings();
if(settings.size() > 0){
Node lastSetting = (Node)settings.get(settings.size() - 1);
currentDocument.replace(lastSetting.getOffset() + lastSetting.getLength(), 0, ", " + eventName + " ::= " + eventValue);
}else{
ASTRewrite rewrite = ASTRewrite.create(fileAST);
rewrite.setText(settingsBlockOpt, "{ " + eventName + " ::= " + eventValue + " }");
rewrite.rewriteAST(currentDocument).apply(currentDocument);
}
}
}