public boolean execute(boolean drop, boolean isInsideStartFinishGroup) {
if (!myUndoableGroup.isUndoable()) {
reportCannotUndo(
CommonBundle.message("cannot.undo.error.contains.nonundoable.changes.message"),
myUndoableGroup.getAffectedDocuments());
return false;
}
Set<DocumentReference> clashing = getStackHolder().collectClashingActions(myUndoableGroup);
if (!clashing.isEmpty()) {
reportCannotUndo(
CommonBundle.message("cannot.undo.error.other.affected.files.changed.message"), clashing);
return false;
}
if (!isInsideStartFinishGroup && myUndoableGroup.shouldAskConfirmation(isRedo())) {
if (!askUser()) return false;
} else {
if (restore(getBeforeState())) {
setBeforeState(new EditorAndState(myEditor, myEditor.getState(FileEditorStateLevel.UNDO)));
return true;
}
}
Collection<VirtualFile> readOnlyFiles = collectReadOnlyAffectedFiles();
if (!readOnlyFiles.isEmpty()) {
final Project project = myManager.getProject();
final VirtualFile[] files = VfsUtil.toVirtualFileArray(readOnlyFiles);
if (project == null) {
return false;
}
final ReadonlyStatusHandler.OperationStatus operationStatus =
ReadonlyStatusHandler.getInstance(project).ensureFilesWritable(files);
if (operationStatus.hasReadonlyFiles()) {
return false;
}
}
Collection<Document> readOnlyDocuments = collectReadOnlyDocuments();
if (!readOnlyDocuments.isEmpty()) {
for (Document document : readOnlyDocuments) {
document.fireReadOnlyModificationAttempt();
}
return false;
}
getStackHolder().removeFromStacks(myUndoableGroup);
if (!drop) {
getReverseStackHolder().addToStacks(myUndoableGroup);
}
performAction();
restore(getAfterState());
return true;
}
private void reportCannotUndo(String message, Collection<DocumentReference> problemFiles) {
if (ApplicationManager.getApplication().isUnitTestMode()) {
throw new RuntimeException(
message
+ "\n"
+ StringUtil.join(
problemFiles, StringUtil.createToStringFunction(DocumentReference.class), "\n"));
}
new CannotUndoReportDialog(myManager.getProject(), message, problemFiles).show();
}
private boolean askUser() {
String actionText = getActionName(myUndoableGroup.getCommandName());
if (actionText.length() > 80) {
actionText = actionText.substring(0, 80) + "... ";
}
return Messages.showOkCancelDialog(
myManager.getProject(), actionText + "?", getActionName(), Messages.getQuestionIcon())
== Messages.OK;
}
private static DocumentReference createReferenceOrGetOriginal(Document d) {
Document original = UndoManagerImpl.getOriginal(d);
return DocumentReferenceManager.getInstance().create(original);
}
private Set<DocumentReference> getDecRefs() {
return myEditor == null
? Collections.<DocumentReference>emptySet()
: UndoManagerImpl.getDocumentReferences(myEditor);
}
