mirror of
https://github.com/zoriya/react-native-svg.git
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07b9ca53f4
XAML may unload the root SVG panel, which will trigger a recursive unload. For GroupView, this unload will clear the child collection. However, active operations on the SVG from the React Native UIManager may still be in flight, in which case we may attempt to remove a child that has already been cleared by the root unload.
114 lines
3.2 KiB
C++
114 lines
3.2 KiB
C++
#include "pch.h"
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#include "GroupViewManager.h"
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#if __has_include("GroupViewManager.g.cpp")
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#include "GroupViewManager.g.cpp"
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#endif
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#include "GroupView.h"
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#include <winrt/Windows.UI.Xaml.Shapes.h>
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using namespace winrt;
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using namespace Microsoft::ReactNative;
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using namespace Windows::Foundation;
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using namespace Windows::Foundation::Collections;
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using namespace Windows::UI::Xaml;
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namespace winrt::RNSVG::implementation {
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GroupViewManager::GroupViewManager() {
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m_class = RNSVG::SVGClass::RNSVGGroup;
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m_name = L"RNSVGGroup";
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}
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// IViewManagerWithNativeProperties
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IMapView<hstring, ViewManagerPropertyType> GroupViewManager::NativeProps() {
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auto const &parentProps{__super::NativeProps()};
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auto const &nativeProps{winrt::single_threaded_map<hstring, ViewManagerPropertyType>()};
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for (auto const &prop : parentProps) {
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nativeProps.Insert(prop.Key(), prop.Value());
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}
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nativeProps.Insert(L"font", ViewManagerPropertyType::Map);
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return nativeProps.GetView();
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}
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// IViewManagerWithChildren
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void GroupViewManager::AddView(FrameworkElement const &parent, UIElement const &child, int64_t /*index*/) {
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if (auto const &groupView{parent.try_as<RNSVG::GroupView>()}) {
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if (auto const &childView{child.try_as<IRenderable>()}) {
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childView.SvgParent(parent);
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groupView.Children().Append(childView);
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childView.MergeProperties(groupView);
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if (childView.IsResponsible() && !groupView.IsResponsible()) {
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groupView.IsResponsible(true);
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}
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if (auto const &root{groupView.SvgRoot()}) {
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root.Invalidate();
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}
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}
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}
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}
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void GroupViewManager::RemoveAllChildren(FrameworkElement const &parent) {
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if (auto const &groupView{parent.try_as<RNSVG::GroupView>()}) {
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for (auto const &child : groupView.Children()) {
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child.Unload();
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child.SvgParent(nullptr);
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}
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groupView.Children().Clear();
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if (auto const &root{groupView.SvgRoot()}) {
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root.Invalidate();
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}
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}
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}
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void GroupViewManager::RemoveChildAt(FrameworkElement const &parent, int64_t index) {
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if (auto const &groupView{parent.try_as<RNSVG::GroupView>()}) {
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if (!groupView.IsUnloaded()) {
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auto const &child{groupView.Children().GetAt(static_cast<uint32_t>(index))};
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child.Unload();
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child.SvgParent(nullptr);
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groupView.Children().RemoveAt(static_cast<uint32_t>(index));
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}
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if (auto const &root{groupView.SvgRoot()}) {
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root.Invalidate();
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}
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}
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}
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void GroupViewManager::ReplaceChild(
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FrameworkElement const &parent,
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UIElement const &oldChild,
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UIElement const &newChild) {
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auto const &groupView{parent.try_as<RNSVG::GroupView>()};
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auto const &oldChildView{oldChild.try_as<IRenderable>()};
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auto const &newChildView{newChild.try_as<IRenderable>()};
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if (groupView && oldChildView && newChildView) {
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uint32_t index;
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if (groupView.Children().IndexOf(oldChildView, index)) {
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groupView.Children().RemoveAt(index);
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oldChildView.Unload();
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oldChildView.SvgParent(nullptr);
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newChildView.SvgParent(parent);
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groupView.Children().Append(newChildView);
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newChildView.MergeProperties(groupView);
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if (auto const &root{groupView.SvgRoot()}) {
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root.Invalidate();
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}
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}
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}
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}
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} // namespace winrt::RNSVG::implementation
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