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// Copyright (C) 2022 The Qt Company Ltd.
// Copyright (c) 2016, BogDan Vatra <bogdan@kde.org>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
package org.qtproject.qt.android.bindings;
import android.app.Application;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.HashMap;
public class QtApplication extends Application
{
public final static String QtTAG = "Qt";
public static Object m_delegateObject = null;
public static HashMap<String, ArrayList<Method>> m_delegateMethods= new HashMap<String, ArrayList<Method>>();
public static Method dispatchKeyEvent = null;
public static Method dispatchPopulateAccessibilityEvent = null;
public static Method dispatchTouchEvent = null;
public static Method dispatchTrackballEvent = null;
public static Method onKeyDown = null;
public static Method onKeyMultiple = null;
public static Method onKeyUp = null;
public static Method onTouchEvent = null;
public static Method onTrackballEvent = null;
public static Method onActivityResult = null;
public static Method onCreate = null;
public static Method onKeyLongPress = null;
public static Method dispatchKeyShortcutEvent = null;
public static Method onKeyShortcut = null;
public static Method dispatchGenericMotionEvent = null;
public static Method onGenericMotionEvent = null;
public static Method onRequestPermissionsResult = null;
private static String activityClassName;
public static void setQtContextDelegate(Class<?> clazz, Object listener)
{
m_delegateObject = listener;
activityClassName = clazz.getCanonicalName();
ArrayList<Method> delegateMethods = new ArrayList<Method>();
for (Method m : listener.getClass().getMethods()) {
if (m.getDeclaringClass().getName().startsWith("org.qtproject.qt.android"))
delegateMethods.add(m);
}
ArrayList<Field> applicationFields = new ArrayList<Field>();
for (Field f : QtApplication.class.getFields()) {
if (f.getDeclaringClass().getName().equals(QtApplication.class.getName()))
applicationFields.add(f);
}
for (Method delegateMethod : delegateMethods) {
try {
clazz.getDeclaredMethod(delegateMethod.getName(), delegateMethod.getParameterTypes());
if (QtApplication.m_delegateMethods.containsKey(delegateMethod.getName())) {
QtApplication.m_delegateMethods.get(delegateMethod.getName()).add(delegateMethod);
} else {
ArrayList<Method> delegateSet = new ArrayList<Method>();
delegateSet.add(delegateMethod);
QtApplication.m_delegateMethods.put(delegateMethod.getName(), delegateSet);
}
for (Field applicationField:applicationFields) {
if (applicationField.getName().equals(delegateMethod.getName())) {
try {
applicationField.set(null, delegateMethod);
} catch (Exception e) {
e.printStackTrace();
}
}
}
} catch (Exception e) { }
}
}
@Override
public void onTerminate() {
if (m_delegateObject != null && m_delegateMethods.containsKey("onTerminate"))
invokeDelegateMethod(m_delegateMethods.get("onTerminate").get(0));
super.onTerminate();
}
public static class InvokeResult
{
public boolean invoked = false;
public Object methodReturns = null;
}
private static int stackDeep=-1;
public static InvokeResult invokeDelegate(Object... args)
{
InvokeResult result = new InvokeResult();
if (m_delegateObject == null)
return result;
StackTraceElement[] elements = Thread.currentThread().getStackTrace();
if (-1 == stackDeep) {
for (int it=0;it<elements.length;it++)
if (elements[it].getClassName().equals(activityClassName)) {
stackDeep = it;
break;
}
}
if (-1 == stackDeep)
return result;
final String methodName=elements[stackDeep].getMethodName();
if (!m_delegateMethods.containsKey(methodName))
return result;
for (Method m : m_delegateMethods.get(methodName)) {
if (m.getParameterTypes().length == args.length) {
result.methodReturns = invokeDelegateMethod(m, args);
result.invoked = true;
return result;
}
}
return result;
}
public static Object invokeDelegateMethod(Method m, Object... args)
{
try {
return m.invoke(m_delegateObject, args);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
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