private void saveOrDiscardIfNeeded(FileEditorInput file) {
TextFileDocumentProvider docProvider = file == null ? null : getTextDocumentProvider(file);
if (docProvider != null && file != null && file.exists() && inputConnected) {
if (docProvider.canSaveDocument(file)
&& ui.confirmOperation(
"Changes Detected",
"Manifest file '"
+ file.getFile().getFullPath().toOSString()
+ "' has been changed. Do you want to save changes or discard them?",
new String[] {"Save", "Discard"},
0)
== 0) {
try {
docProvider.saveDocument(
new NullProgressMonitor(), file, docProvider.getDocument(file), true);
} catch (CoreException e) {
Log.log(e);
ui.errorPopup("Failed Saving File", ExceptionUtil.getMessage(e));
}
} else {
try {
docProvider.resetDocument(file);
} catch (CoreException e) {
Log.log(e);
}
}
disconnect(docProvider, file);
}
}
public IAnnotationModel getAnnotationModel() {
FileEditorInput input = editorInput.getValue();
if (input != null) {
TextFileDocumentProvider provider = getTextDocumentProvider(input);
if (provider != null) {
return provider.getAnnotationModel(input);
}
}
return null;
}
@Override
protected IDocument compute() {
FileEditorInput input = editorInput.getValue();
if (input != null) {
TextFileDocumentProvider provider = getTextDocumentProvider(input);
if (provider != null) {
return provider.getDocument(input);
}
}
return new Document("");
}
private TextFileDocumentProvider getTextDocumentProvider(FileEditorInput input) {
IDocumentProvider docProvider =
DocumentProviderRegistry.getDefault().getDocumentProvider(input);
if (docProvider instanceof TextFileDocumentProvider) {
TextFileDocumentProvider textDocProvider = (TextFileDocumentProvider) docProvider;
if (!docProviders.contains(textDocProvider)) {
textDocProvider.addElementStateListener(dirtyStateListener);
onDispose(
(d) -> {
textDocProvider.removeElementStateListener(dirtyStateListener);
});
docProviders.add(textDocProvider);
}
return textDocProvider;
}
return null;
}
private void disconnect(TextFileDocumentProvider provider, FileEditorInput input) {
if (inputConnected) {
provider.disconnect(input);
inputConnected = false;
} else {
throw new IllegalStateException(
"Attempting to disconnect input '"
+ input.getFile().getName()
+ "' while no inputs are connected");
}
}
private void connect(TextFileDocumentProvider provider, FileEditorInput input) {
if (!inputConnected) {
try {
provider.connect(input);
inputConnected = true;
} catch (CoreException e) {
Log.log(e);
}
} else {
throw new IllegalStateException(
"Attempting to connect input '"
+ input.getFile().getName()
+ "' while previous input is still connected.");
}
}