private void updateSearchButtonsEnablement() {
		allButton.setEnabled(!isBusy && searchEnabled);
		nextButton.setEnabled(!isBusy && searchEnabled);
		previousButton.setEnabled(!isBusy && searchEnabled);
	}
Called when user selects Cancel Button
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/searchtext/SearchTextDialog.java