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; }
@Override public boolean requestWriting(@NotNull Document document, Project project) { final VirtualFile file = getInstance().getFile(document); if (project != null && file != null && file.isValid()) { return !file.getFileType().isBinary() && ReadonlyStatusHandler.ensureFilesWritable(project, file); } if (document.isWritable()) { return true; } document.fireReadOnlyModificationAttempt(); return false; }