private boolean addXmlFileChanges(IFile file, CompositeChange changes, boolean isManifest) {
IModelManager modelManager = StructuredModelManager.getModelManager();
IStructuredModel model = null;
try {
model = modelManager.getExistingModelForRead(file);
if (model == null) {
model = modelManager.getModelForRead(file);
}
if (model != null) {
IStructuredDocument document = model.getStructuredDocument();
if (model instanceof IDOMModel) {
IDOMModel domModel = (IDOMModel) model;
Element root = domModel.getDocument().getDocumentElement();
if (root != null) {
List<TextEdit> edits = new ArrayList<TextEdit>();
if (isManifest) {
addManifestReplacements(edits, root, document);
} else {
addLayoutReplacements(edits, root, document);
}
if (!edits.isEmpty()) {
MultiTextEdit rootEdit = new MultiTextEdit();
rootEdit.addChildren(edits.toArray(new TextEdit[edits.size()]));
TextFileChange change = new TextFileChange(file.getName(), file);
change.setTextType(EXT_XML);
change.setEdit(rootEdit);
changes.add(change);
}
}
} else {
return false;
}
}
return true;
} catch (IOException e) {
AdtPlugin.log(e, null);
} catch (CoreException e) {
AdtPlugin.log(e, null);
} finally {
if (model != null) {
model.releaseFromRead();
}
}
return false;
}
/**
* Returns the content type of document
*
* @param document - assumes document is not null
* @return String content type of given document
*/
private String getContentType() {
String type = null;
IModelManager mgr = StructuredModelManager.getModelManager();
IStructuredModel model = null;
try {
model = mgr.getExistingModelForRead(document);
if (model != null) {
type = model.getContentTypeIdentifier();
}
} finally {
if (model != null) {
model.releaseFromRead();
}
}
return type;
}
/**
* Method validateEdit.
*
* @param file org.eclipse.core.resources.IFile
* @param context org.eclipse.swt.widgets.Shell
* @return IStatus
*/
private static IStatus validateEdit(IFile file, Shell context) {
if (file == null || !file.exists()) return STATUS_ERROR;
if (!(file.isReadOnly())) return STATUS_OK;
IPath location = file.getLocation();
final long beforeModifiedFromJavaIO =
(location != null) ? location.toFile().lastModified() : IResource.NULL_STAMP;
final long beforeModifiedFromIFile = file.getModificationStamp();
IStatus status = ResourcesPlugin.getWorkspace().validateEdit(new IFile[] {file}, context);
if (!status.isOK()) return status;
final long afterModifiedFromJavaIO =
(location != null) ? location.toFile().lastModified() : IResource.NULL_STAMP;
final long afterModifiedFromIFile = file.getModificationStamp();
if (beforeModifiedFromJavaIO != afterModifiedFromJavaIO
|| beforeModifiedFromIFile != afterModifiedFromIFile) {
IModelManager manager = StructuredModelManager.getModelManager();
IStructuredModel model = manager.getExistingModelForRead(file);
if (model != null) {
if (!model.isDirty()) {
try {
file.refreshLocal(IResource.DEPTH_ONE, null);
} catch (CoreException e) {
return STATUS_ERROR;
} finally {
model.releaseFromRead();
}
} else {
model.releaseFromRead();
}
}
}
if ((beforeModifiedFromJavaIO != afterModifiedFromJavaIO)
|| (beforeModifiedFromIFile != afterModifiedFromIFile)) {
// the file is replaced. Modification cannot be
// applied.
return STATUS_ERROR;
}
return STATUS_OK;
}
/**
* Returns the closest IndexedRegion for the offset and viewer allowing for differences between
* viewer offsets and model positions. note: this method returns an IndexedRegion for read only
*
* @param viewer the viewer whose document is used to compute the proposals
* @param documentOffset an offset within the document for which completions should be computed
* @return an IndexedRegion
*/
public static IndexedRegion getNodeAt(ITextViewer viewer, int documentOffset) {
if (viewer == null) return null;
IndexedRegion node = null;
IModelManager mm = StructuredModelManager.getModelManager();
IStructuredModel model = null;
if (mm != null) model = mm.getExistingModelForRead(viewer.getDocument());
try {
if (model != null) {
int lastOffset = documentOffset;
node = model.getIndexedRegion(documentOffset);
while (node == null && lastOffset >= 0) {
lastOffset--;
node = model.getIndexedRegion(lastOffset);
}
}
} finally {
if (model != null) model.releaseFromRead();
}
return node;
}