...

1 files changed, 58 insertions, 0 deletions

diff --git a/src/ui/style/StyleRuleSet.cpp b/src/ui/style/StyleRuleSet.cpp
index e69de29b..403fe114 100644
--- a/src/ui/style/StyleRuleSet.cpp
+++ b/src/ui/style/StyleRuleSet.cpp
@@ -0,0 +1,58 @@
+#include "cru/ui/style/StyleRuleSet.hpp"
+#include "cru/common/Event.hpp"
+#include "gsl/gsl_assert"
+
+#include <unordered_set>
+
+namespace cru::ui::style {
+void StyleRuleSet::AddStyleRule(StyleRule rule, gsl::index index) {
+  Expects(index >= 0 && index <= GetSize());
+
+  rules_.insert(rules_.cbegin() + index, std::move(rule));
+
+  UpdateChangeListener();
+  UpdateStyle();
+}
+
+void StyleRuleSet::RemoveStyleRule(gsl::index index, gsl::index count) {
+  Expects(index >= 0);
+  Expects(count >= 0 && index + count <= GetSize());
+
+  rules_.erase(rules_.cbegin() + index, rules_.cbegin() + index + count);
+
+  UpdateChangeListener();
+  UpdateStyle();
+}
+
+void StyleRuleSet::Set(const StyleRuleSet& other) {
+  rules_ = other.rules_;
+  UpdateChangeListener();
+  UpdateStyle();
+}
+
+void StyleRuleSet::UpdateChangeListener() {
+  if (control_ == nullptr) return;
+
+  guard_.Clear();
+
+  std::unordered_set<IBaseEvent*> events;
+  for (const auto& rule : rules_) {
+    auto e = rule.GetCondition()->ChangeOn(control_);
+    events.insert(e.cbegin(), e.cend());
+  }
+
+  for (auto e : events) {
+    guard_ += e->AddSpyOnlyHandler([this] { this->UpdateStyle(); });
+  }
+}
+
+void StyleRuleSet::UpdateStyle() {
+  if (control_ == nullptr) return;
+
+  for (const auto& rule : rules_) {
+    if (rule.GetCondition()->Judge(control_)) {
+      rule.GetStyler()->Apply(control_);
+    }
+  }
+}
+}  // namespace cru::ui::style