From c6f170d1541c53a5b2a9821b31f77612d0b8559f Mon Sep 17 00:00:00 2001
From: Rusty Wagner <rusty.wagner@gmail.com>
Date: Wed, 27 Oct 2021 19:12:33 -0400
Subject: Add API for global actions on global area widgets

---
 ui/globalarea.h | 105 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)

diff --git a/ui/globalarea.h b/ui/globalarea.h
index c49679a1..94b0b715 100644
--- a/ui/globalarea.h
+++ b/ui/globalarea.h
@@ -105,12 +105,117 @@ public:
 	bool toggleVisible();
 	bool toggleWidgetVisible(const QString& title);
 	void focusWidget(const QString& title);
+	GlobalAreaWidget* widget(const QString& title);
 
 	void saveSizes(const QSettings& settings, const QString& windowStateName);
 	void saveState(const QSettings& settings, const QString& windowStateName);
 	void restoreSizes(const QSettings& settings, const QString& windowStateName);
 	void restoreState(const QSettings& settings, const QString& windowStateName);
 
+	static GlobalArea* current()
+	{
+		UIContext* context = UIContext::activeContext();
+		if (!context)
+			return nullptr;
+		return context->globalArea();
+	}
+
+	template<class T>
+	static T* widget(const QString& title)
+	{
+		GlobalArea* globalArea = current();
+		if (!globalArea)
+			return (T*)nullptr;
+		GlobalAreaWidget* widget = globalArea->widget(title);
+		if (!widget)
+			return (T*)nullptr;
+		return qobject_cast<T*>(widget);
+	}
+
+	template<class T>
+	static UIAction globalAreaAction(const QString& title,
+		const std::function<void(T* obj)>& activate)
+	{
+		return globalAreaAction<T>(title,
+			[=](T* obj, const UIActionContext&) { activate(obj); },
+			[=](T*, const UIActionContext&) { return true; });
+	}
+
+	template<class T>
+	static UIAction globalAreaAction(const QString& title,
+		const std::function<void(T* obj, const UIActionContext& ctxt)>& activate)
+	{
+		return globalAreaAction<T>(title, activate,
+			[](T*, const UIActionContext&) { return true; });
+	}
+
+	template<class T>
+	static UIAction globalAreaAction(const QString& title,
+		const std::function<void(T* obj)>& activate, const std::function<bool(T* obj)>& isValid)
+	{
+		return globalAreaAction<T>(title,
+			[=](T* obj, const UIActionContext&) { activate(obj); },
+			[=](T* obj, const UIActionContext&) { return isValid(obj); });
+	}
+
+	template<class T>
+	static UIAction globalAreaAction(const QString& title,
+		const std::function<void(T* obj, const UIActionContext& ctxt)>& activate,
+		const std::function<bool(T* obj, const UIActionContext& ctxt)>& isValid)
+	{
+		std::function<T*(const UIActionContext& ctxt)> lookup = [=](const UIActionContext& ctxt) {
+			if (!ctxt.context)
+				return (T*)nullptr;
+			GlobalArea* globalArea = ctxt.context->globalArea();
+			if (!globalArea || !globalArea->isWidgetVisible(title))
+				return (T*)nullptr;
+			GlobalAreaWidget* widget = globalArea->widget(title);
+			if (!widget)
+				return (T*)nullptr;
+			return qobject_cast<T*>(widget);
+		};
+		return UIAction(
+			[=](const UIActionContext& ctxt) {
+				T* obj = lookup(ctxt);
+				if (obj)
+					activate(obj, ctxt);
+			},
+			[=](const UIActionContext& ctxt) {
+				T* obj = lookup(ctxt);
+				if (obj)
+					return isValid(obj, ctxt);
+				return false;
+			});
+	}
+
+	template<class T>
+	static std::function<bool(const UIActionContext&)> globalAreaActionChecked(const QString& title,
+		const std::function<bool(T* obj)>& isChecked)
+	{
+		return globalAreaActionChecked<T>(title,
+			[=](T* obj, const UIActionContext&) { return isChecked(obj); });
+	}
+
+	template<class T>
+	static std::function<bool(const UIActionContext&)> globalAreaActionChecked(const QString& title,
+		const std::function<bool(T* obj, const UIActionContext& ctxt)>& isChecked)
+	{
+		return [=](const UIActionContext& ctxt) {
+			if (!ctxt.context)
+				return false;
+			GlobalArea* globalArea = ctxt.context->globalArea();
+			if (!globalArea || !globalArea->isWidgetVisible(title))
+				return false;
+			GlobalAreaWidget* widget = globalArea->widget(title);
+			if (!widget)
+				return false;
+			T* obj = qobject_cast<T*>(widget);
+			if (obj)
+				return isChecked(obj, ctxt);
+			return false;
+		};
+	}
+
 Q_SIGNALS:
 	void widgetClosed(GlobalAreaWidget* widget);
 
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