com.hrules.darealmvp.DRDialogFragmentV4.java Source code

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Here is the source code for com.hrules.darealmvp.DRDialogFragmentV4.java

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/*
 * Copyright (c) 2016. Hctor de Isidro - hrules6872
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.hrules.darealmvp;

import android.app.Dialog;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.DialogFragment;
import android.support.v7.app.AlertDialog;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;

public abstract class DRDialogFragmentV4<P extends DRPresenter<V>, V extends DRView> extends DialogFragment
        implements DRView {

    private P presenter;

    @NonNull
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        initializePresenter(null, savedInstanceState);
        return getAlertDialog().create();
    }

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        int layoutId = getLayoutResource();
        if (!getShowsDialog()) {
            preCreateView();
            return inflater.inflate(layoutId, container, false);
        }
        return null;
    }

    @Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        initializePresenter(view, savedInstanceState);
    }

    @SuppressWarnings("unchecked")
    private void initializePresenter(View view, @Nullable Bundle savedInstanceState) {
        if (presenter == null) {
            try {
                presenter = internalGetPresenter();
            } catch (java.lang.InstantiationException | ClassNotFoundException | IllegalAccessException
                    | ClassCastException e) {
                Log.e("DRDialogFragmentV4", e.getMessage(), e);
            }
        }

        if (presenter == null) {
            throw new IllegalArgumentException();
        }

        presenter.bind((V) this);
        if (view != null) {
            initializeViews(view);
        }
        presenter.onViewReady(savedInstanceState);
    }

    @SuppressWarnings("unchecked")
    private P internalGetPresenter()
            throws java.lang.InstantiationException, IllegalAccessException, ClassNotFoundException {
        Class clazz = getClass();
        Type genericSuperclass;
        for (;;) {
            genericSuperclass = clazz.getGenericSuperclass();
            if (genericSuperclass instanceof ParameterizedType) {
                break;
            }
            clazz = clazz.getSuperclass();
        }
        Type presenterClass = ((ParameterizedType) genericSuperclass).getActualTypeArguments()[0];
        return (P) Class.forName(presenterClass.toString().split(" ")[1]).newInstance();
    }

    @SuppressWarnings("unchecked")
    public P getPresenter() {
        return presenter;
    }

    public void setPresenter(@NonNull P presenter) {
        this.presenter = presenter;
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
        if (presenter != null) {
            presenter.unbind();
        }
    }

    protected void preCreateView() {
    }

    protected abstract AlertDialog.Builder getAlertDialog();

    protected abstract int getLayoutResource();

    protected abstract void initializeViews(@NonNull View view);
}