src/vs/workbench/contrib/searchEditor/browser/searchEditor.ts/SearchEditor/focusPrevInput
class SearchEditor:	focusPrevInput() {
		if (this.queryEditorWidget.searchInputHasFocus()) {
			this.searchResultEditor.focus(); // wrap
		} else if (this.inputPatternIncludes.inputHasFocus()) {
			this.queryEditorWidget.searchInput.focus();
		} else if (this.inputPatternExcludes.inputHasFocus()) {
			this.inputPatternIncludes.focus();
		} else if (this.searchResultEditor.hasWidgetFocus()) {
			// unreachable.
		}
	}