core: add plannerShared class

Add a plannerShared class, whose purpose is to contain shared
functions between mobile and desktop

This class is the inner workings of the diveplanner not the UI

Signed-off-by: Jan Iversen <jan@casacondor.com>

core/CMakeLists.txt

@@ -72,6 +72,8 @@ set(SUBSURFACE_CORE_LIB_SRCS
 	divelist.h
 	divelogexportlogic.cpp
 	divelogexportlogic.h
+	plannershared.cpp
+	plannershared.h
 	divesite-helper.cpp
 	divesite.c
 	divesite.h

core/plannershared.cpp

@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "plannershared.h"
+
+
+plannerShared *plannerShared::instance()
+{
+    static plannerShared *self = new plannerShared;
+    return self;
+}

core/plannershared.h

@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef PLANNERSHARED_H
+#define PLANNERSHARED_H
+#include <QObject>
+
+// This is a shared class (mobile/desktop), and contains the core of the diveplanner
+// without UI entanglement.
+// It make variables and functions available to QML, these are referenced directly
+// in the desktop version
+//
+// The mobile diveplanner shows all diveplans, but the editing functionality is
+// limited to keep the UI simpler.
+
+class plannerShared: public QObject {
+	Q_OBJECT
+
+public:
+	static plannerShared *instance();
+
+private:
+	plannerShared() {}
+};
+
+#endif // PLANNERSHARED_H