components/feature_engagement_tracker/internal/android/java/src/org/chromium/components/feature_engagement_tracker/internal/FeatureEngagementTrackerImpl.java

// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

package org.chromium.components.feature_engagement_tracker.internal;

import org.chromium.base.Callback;
import org.chromium.base.annotations.CalledByNative;
import org.chromium.base.annotations.JNINamespace;
import org.chromium.components.feature_engagement_tracker.FeatureEngagementTracker;

/**
 * Java side of the JNI bridge between FeatureEngagementTrackerImpl in Java
 * and C++. All method calls are delegated to the native C++ class.
 */
@JNINamespace("feature_engagement_tracker")
public class FeatureEngagementTrackerImpl implements FeatureEngagementTracker {
    /**
     * The pointer to the FeatureEngagementTrackerImplAndroid JNI bridge.
     */
    private long mNativePtr;

    @CalledByNative
    private static FeatureEngagementTrackerImpl create(long nativePtr) {
        return new FeatureEngagementTrackerImpl(nativePtr);
    }

    private FeatureEngagementTrackerImpl(long nativePtr) {
        mNativePtr = nativePtr;
    }

    @Override
    public void notifyEvent(String event) {
        assert mNativePtr != 0;
        nativeNotifyEvent(mNativePtr, event);
    }

    @Override
    public boolean shouldTriggerHelpUI(String feature) {
        assert mNativePtr != 0;
        return nativeShouldTriggerHelpUI(mNativePtr, feature);
    }

    @Override
    public void dismissed() {
        assert mNativePtr != 0;
        nativeDismissed(mNativePtr);
    }

    @Override
    public void addOnInitializedCallback(Callback<Boolean> callback) {
        assert mNativePtr != 0;
        nativeAddOnInitializedCallback(mNativePtr, callback);
    }

    @CalledByNative
    private void clearNativePtr() {
        mNativePtr = 0;
    }

    @CalledByNative
    private long getNativePtr() {
        assert mNativePtr != 0;
        return mNativePtr;
    }

    private native void nativeNotifyEvent(
            long nativeFeatureEngagementTrackerImplAndroid, String event);
    private native boolean nativeShouldTriggerHelpUI(
            long nativeFeatureEngagementTrackerImplAndroid, String feature);
    private native void nativeDismissed(long nativeFeatureEngagementTrackerImplAndroid);
    private native void nativeAddOnInitializedCallback(
            long nativeFeatureEngagementTrackerImplAndroid, Callback<Boolean> callback);
}