git subrepo clone --branch=sono6good https://github.com/essej/JUCE.git deps/juce

subrepo:
  subdir:   "deps/juce"
  merged:   "b13f9084e"
upstream:
  origin:   "https://github.com/essej/JUCE.git"
  branch:   "sono6good"
  commit:   "b13f9084e"
git-subrepo:
  version:  "0.4.3"
  origin:   "https://github.com/ingydotnet/git-subrepo.git"
  commit:   "2f68596"

deps/juce/modules/juce_gui_basics/components/juce_ModalComponentManager.cpp

@@ -0,0 +1,292 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2020 - Raw Material Software Limited
+
+   JUCE is an open source library subject to commercial or open-source
+   licensing.
+
+   By using JUCE, you agree to the terms of both the JUCE 6 End-User License
+   Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
+
+   End User License Agreement: www.juce.com/juce-6-licence
+   Privacy Policy: www.juce.com/juce-privacy-policy
+
+   Or: You may also use this code under the terms of the GPL v3 (see
+   www.gnu.org/licenses).
+
+   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
+   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
+   DISCLAIMED.
+
+  ==============================================================================
+*/
+
+namespace juce
+{
+
+struct ModalComponentManager::ModalItem  : public ComponentMovementWatcher
+{
+    ModalItem (Component* comp, bool shouldAutoDelete)
+        : ComponentMovementWatcher (comp),
+          component (comp), autoDelete (shouldAutoDelete)
+    {
+        jassert (comp != nullptr);
+    }
+
+    ~ModalItem() override
+    {
+        if (autoDelete)
+            std::unique_ptr<Component> componentDeleter (component);
+    }
+
+    void componentMovedOrResized (bool, bool) override {}
+
+    using ComponentMovementWatcher::componentMovedOrResized;
+
+    void componentPeerChanged() override
+    {
+        componentVisibilityChanged();
+    }
+
+    void componentVisibilityChanged() override
+    {
+        if (! component->isShowing())
+            cancel();
+    }
+
+    using ComponentMovementWatcher::componentVisibilityChanged;
+
+    void componentBeingDeleted (Component& comp) override
+    {
+        ComponentMovementWatcher::componentBeingDeleted (comp);
+
+        if (component == &comp || comp.isParentOf (component))
+        {
+            autoDelete = false;
+            cancel();
+        }
+    }
+
+    void cancel()
+    {
+        if (isActive)
+        {
+            isActive = false;
+
+            if (auto* mcm = ModalComponentManager::getInstanceWithoutCreating())
+                mcm->triggerAsyncUpdate();
+        }
+    }
+
+    Component* component;
+    OwnedArray<Callback> callbacks;
+    int returnValue = 0;
+    bool isActive = true, autoDelete;
+
+    JUCE_DECLARE_NON_COPYABLE (ModalItem)
+};
+
+//==============================================================================
+ModalComponentManager::ModalComponentManager()
+{
+}
+
+ModalComponentManager::~ModalComponentManager()
+{
+    stack.clear();
+    clearSingletonInstance();
+}
+
+JUCE_IMPLEMENT_SINGLETON (ModalComponentManager)
+
+
+//==============================================================================
+void ModalComponentManager::startModal (Component* component, bool autoDelete)
+{
+    if (component != nullptr)
+        stack.add (new ModalItem (component, autoDelete));
+}
+
+void ModalComponentManager::attachCallback (Component* component, Callback* callback)
+{
+    if (callback != nullptr)
+    {
+        std::unique_ptr<Callback> callbackDeleter (callback);
+
+        for (int i = stack.size(); --i >= 0;)
+        {
+            auto* item = stack.getUnchecked (i);
+
+            if (item->component == component)
+            {
+                item->callbacks.add (callback);
+                callbackDeleter.release();
+                break;
+            }
+        }
+    }
+}
+
+void ModalComponentManager::endModal (Component* component)
+{
+    for (int i = stack.size(); --i >= 0;)
+    {
+        auto* item = stack.getUnchecked (i);
+
+        if (item->component == component)
+            item->cancel();
+    }
+}
+
+void ModalComponentManager::endModal (Component* component, int returnValue)
+{
+    for (int i = stack.size(); --i >= 0;)
+    {
+        auto* item = stack.getUnchecked (i);
+
+        if (item->component == component)
+        {
+            item->returnValue = returnValue;
+            item->cancel();
+        }
+    }
+}
+
+int ModalComponentManager::getNumModalComponents() const
+{
+    int n = 0;
+
+    for (auto* item : stack)
+        if (item->isActive)
+            ++n;
+
+    return n;
+}
+
+Component* ModalComponentManager::getModalComponent (int index) const
+{
+    int n = 0;
+
+    for (int i = stack.size(); --i >= 0;)
+    {
+        auto* item = stack.getUnchecked (i);
+
+        if (item->isActive)
+            if (n++ == index)
+                return item->component;
+    }
+
+    return nullptr;
+}
+
+bool ModalComponentManager::isModal (const Component* comp) const
+{
+    for (auto* item : stack)
+        if (item->isActive && item->component == comp)
+            return true;
+
+    return false;
+}
+
+bool ModalComponentManager::isFrontModalComponent (const Component* comp) const
+{
+    return comp == getModalComponent (0);
+}
+
+void ModalComponentManager::handleAsyncUpdate()
+{
+    for (int i = stack.size(); --i >= 0;)
+    {
+        auto* item = stack.getUnchecked (i);
+
+        if (! item->isActive)
+        {
+            std::unique_ptr<ModalItem> deleter (stack.removeAndReturn (i));
+            Component::SafePointer<Component> compToDelete (item->autoDelete ? item->component : nullptr);
+
+            for (int j = item->callbacks.size(); --j >= 0;)
+                item->callbacks.getUnchecked (j)->modalStateFinished (item->returnValue);
+
+            compToDelete.deleteAndZero();
+        }
+    }
+}
+
+void ModalComponentManager::bringModalComponentsToFront (bool topOneShouldGrabFocus)
+{
+    ComponentPeer* lastOne = nullptr;
+
+    for (int i = 0; i < getNumModalComponents(); ++i)
+    {
+        auto* c = getModalComponent (i);
+
+        if (c == nullptr)
+            break;
+
+        if (auto* peer = c->getPeer())
+        {
+            if (peer != lastOne)
+            {
+                if (lastOne == nullptr)
+                {
+                    peer->toFront (topOneShouldGrabFocus);
+
+                    if (topOneShouldGrabFocus)
+                        peer->grabFocus();
+                }
+                else
+                {
+                    peer->toBehind (lastOne);
+                }
+
+                lastOne = peer;
+            }
+        }
+    }
+}
+
+bool ModalComponentManager::cancelAllModalComponents()
+{
+    auto numModal = getNumModalComponents();
+
+    for (int i = numModal; --i >= 0;)
+        if (auto* c = getModalComponent (i))
+            c->exitModalState (0);
+
+    return numModal > 0;
+}
+
+//==============================================================================
+#if JUCE_MODAL_LOOPS_PERMITTED
+int ModalComponentManager::runEventLoopForCurrentComponent()
+{
+    // This can only be run from the message thread!
+    JUCE_ASSERT_MESSAGE_THREAD
+
+    int returnValue = 0;
+
+    if (auto* currentlyModal = getModalComponent (0))
+    {
+        FocusRestorer focusRestorer;
+        bool finished = false;
+
+        attachCallback (currentlyModal, ModalCallbackFunction::create ([&] (int r) { returnValue = r; finished = true; }));
+
+        JUCE_TRY
+        {
+            while (! finished)
+            {
+                if  (! MessageManager::getInstance()->runDispatchLoopUntil (20))
+                    break;
+            }
+        }
+        JUCE_CATCH_EXCEPTION
+    }
+
+    return returnValue;
+}
+#endif
+
+} // namespace juce