From 53e8d9abe5d1cd78891d3924b4f87bda4d0a4e84 Mon Sep 17 00:00:00 2001
From: Syping <schiedelrafael@keppe.org>
Date: Thu, 23 Aug 2018 16:58:28 +0200
Subject: [PATCH] delete's added

---
 src/luaengine/luaengine/LuaEngine.cpp | 48 +++++++++++++++++++++++++--
 src/luaengine/luaengine/LuaEngine.h   |  8 +++--
 src/luaengineapp/app.lua              |  9 ++---
 3 files changed, 53 insertions(+), 12 deletions(-)

diff --git a/src/luaengine/luaengine/LuaEngine.cpp b/src/luaengine/luaengine/LuaEngine.cpp
index 9e551d3..27ad235 100644
--- a/src/luaengine/luaengine/LuaEngine.cpp
+++ b/src/luaengine/luaengine/LuaEngine.cpp
@@ -26,7 +26,11 @@ LuaEngine::LuaEngine(QObject *parent, bool loadBaseLibraries) : QObject(parent)
     if (loadBaseLibraries)
         luaL_openlibs(L);
     pushPointer("__LuaEngine", (void*)this);
+    pushVariant("DeleteInstant", 0);
+    pushVariant("DeleteLater", 1);
+    pushFunction("delete", luaDeletePointer_p);
     pushFunction("connect", luaTriggerConnect_p);
+    pushFunction("disconnect", luaTriggerDisconnect_p);
     pushFunction("luaEngineVersion", luaEngineVersion_p);
 }
 
@@ -221,10 +225,10 @@ QVariant LuaEngine::getVariant(lua_State *L_p, int index)
     else if (lua_isuserdata(L_p, index)) {
         return QVariant::fromValue(lua_touserdata(L_p, index));
     }
-    else if (lua_isnil(L_p, index)) {
+    else if (lua_isnoneornil(L_p, index)) {
         return QVariant();
     }
-    QTextStream(stderr) << "Warning: Didn't catch lua_isnil before empty QVariant got returned" << endl;
+    QTextStream(stderr) << "Warning: Didn't catch lua_isnoneornil before empty QVariant got returned" << endl;
     return QVariant();
 }
 
@@ -285,6 +289,24 @@ int LuaEngine::getArgumentCount(lua_State *L_p)
     return lua_gettop(L_p);
 }
 
+int LuaEngine::luaDeletePointer_p(lua_State *L_p)
+{
+    if (getArgumentCount(L_p) >= 1) {
+        void *pointer = getPointer(L_p, 1);
+        if (pointer != NULL && ((QObject*)pointer)->inherits("QObject")) {
+            switch (getVariant(L_p, 2).toInt())
+            {
+            case 1:
+                ((QObject*)pointer)->deleteLater();
+                break;
+            default:
+                delete ((QObject*)pointer);
+            }
+        }
+    }
+    return 0;
+}
+
 int LuaEngine::luaTriggerConnect_p(lua_State *L_p)
 {
     if (getArgumentCount(L_p) >= 3) {
@@ -307,6 +329,28 @@ int LuaEngine::luaTriggerConnect_p(lua_State *L_p)
     return 0;
 }
 
+int LuaEngine::luaTriggerDisconnect_p(lua_State *L_p)
+{
+    if (getArgumentCount(L_p) >= 2) {
+        QObject *object = (QObject*)getPointer(L_p, 1);
+        QString signalString = getVariant(L_p, 2).toString();
+        int signalIndex = object->metaObject()->indexOfSignal(signalString.toUtf8().data());
+        if (signalIndex != -1) {
+            LuaEngine *engine = (LuaEngine*)getPointer(L_p, "__LuaEngine");
+            int slotIndex = engine->metaObject()->indexOfSlot("luaTriggerSlot_p()");
+            if (slotIndex != -1) {
+                QMetaMethod signal = object->metaObject()->method(signalIndex);
+                QMetaMethod slot = engine->metaObject()->method(slotIndex);
+                QString funcStorage;
+                QTextStream(&funcStorage) << "__ConnectFunc_" << object << "_" << signal.name();
+                pushVariant(L_p, funcStorage.toUtf8().data(), QVariant());
+                QObject::disconnect(object, signal, engine, slot);
+            }
+        }
+    }
+    return 0;
+}
+
 void LuaEngine::luaTriggerSlot_p()
 {
     QMetaMethod signal = sender()->metaObject()->method(senderSignalIndex());
diff --git a/src/luaengine/luaengine/LuaEngine.h b/src/luaengine/luaengine/LuaEngine.h
index 52536ee..d16af0d 100644
--- a/src/luaengine/luaengine/LuaEngine.h
+++ b/src/luaengine/luaengine/LuaEngine.h
@@ -72,13 +72,15 @@ public:
     static QVariantList getArguments(lua_State *L_p);
     static int getArgumentCount(lua_State *L_p);
 
-private slots:
-    void luaTriggerSlot_p();
-
 private:
     lua_State *L;
     static int luaEngineVersion_p(lua_State *L_p);
+    static int luaDeletePointer_p(lua_State *L_p);
     static int luaTriggerConnect_p(lua_State *L_p);
+    static int luaTriggerDisconnect_p(lua_State *L_p);
+
+private slots:
+    void luaTriggerSlot_p();
 };
 
 #endif // LUAENGINE_H
diff --git a/src/luaengineapp/app.lua b/src/luaengineapp/app.lua
index 0d9c9e4..b8a832a 100644
--- a/src/luaengineapp/app.lua
+++ b/src/luaengineapp/app.lua
@@ -33,30 +33,25 @@ local pushButton1
 function main()
    mainWindow = createMainWindow()
    mainWidget = createCentralWidget(mainWindow)
+   mainLayout = createLayout(VerticalLayout, mainWidget)
 
    menuBar = createMenuBar(mainWindow)
    menuFile = createMenu("File", menuBar)
    menuEntryExit = createMenuEntry("Exit", menuFile)
+   connect(menuEntryExit, "triggered()", "closeWindow")
    menuHelp = createMenu("Help", menuBar)
    menuEntryAbout = createMenuEntry("About LuaEngine", menuHelp)
-
-   connect(menuEntryExit, "triggered()", "closeWindow")
    connect(menuEntryAbout, "triggered()", "showAboutBox")
 
-   mainLayout = createLayout(VerticalLayout, mainWidget)
-
    labelLayout = createLayout(HorizontalLayout, mainLayout)
    layoutAddLayout(mainLayout, labelLayout)
-
    appLabel1 = createLabel("LuaEngine greets!", mainWidget)
    layoutAddWidget(labelLayout, appLabel1)
-
    appLabel2 = createLabel("..and not only one time!", mainWidget)
    layoutAddWidget(labelLayout, appLabel2)
 
    pushButton1 = createPushButton("Press me hard please!", mainWidget)
    layoutAddWidget(mainLayout, pushButton1)
-
    connect(pushButton1, "clicked()", "showHarderBox")
 
    showWidget(mainWindow, ShowNormal)