使用NSRuleEditor显示保存的条件时遇到问题

Question

我为用户设置了一个NSRuleEditor来编辑规则来过滤数组，我可以让用户编辑规则，但我找不到一种方法来显示我为用户保存的规则，有人有什么想法吗？

我为每一行准备了规则，并从委托方法返回，当用户单击"+“按钮时，新规则就会像我预期的那样出现

#pragma mark - NSRuleEditorDelegate

- (NSInteger)ruleEditor:(NSRuleEditor *)editor numberOfChildrenForCriterion:(nullable id)criterion withRowType:(NSRuleEditorRowType)rowType {
    RuleCriterion *ruleCriterion = criterion;

    if (rowType == NSRuleEditorRowTypeCompound) {
        if (ruleCriterion == nil) {
            return self.compoundCriteria.count;
        } else {
            return ruleCriterion.numberOfChildren;
        }
    } else {
        if (ruleCriterion == nil) {
            return self.simpleCriteria.count;
        } else {
            return ruleCriterion.numberOfChildren;
        }
    }
}

- (id)ruleEditor:(NSRuleEditor *)editor child:(NSInteger)index forCriterion:(nullable id)criterion withRowType:(NSRuleEditorRowType)rowType {
    RuleCriterion *ruleCriterion = criterion;

    if (rowType == NSRuleEditorRowTypeCompound && ruleCriterion == nil) {
        return self.compoundCriteria[index];
    } else if (rowType == NSRuleEditorRowTypeSimple && ruleCriterion == nil) {
        return self.simpleCriteria[index];
    } else {
        return [ruleCriterion childAtIndex:index];
    }
}

- (id)ruleEditor:(NSRuleEditor *)editor displayValueForCriterion:(id)criterion inRow:(NSInteger)row {
    RuleCriterion *ruleCriterion = criterion;

    return ruleCriterion.displayValue;
}

Answer 1

使用插入行

- (void)insertRowAtIndex:(NSInteger)rowIndex withType:(NSRuleEditorRowType)rowType asSubrowOfRow:(NSInteger)parentRow animate:(BOOL)shouldAnimate;

使用设置行的条件和显示值

- (void)setCriteria:(NSArray *)criteria andDisplayValues:(NSArray *)values forRowAtIndex:(NSInteger)rowIndex;