app.presentation.foundation.views.FragmentsManager.java Source code

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Here is the source code for app.presentation.foundation.views.FragmentsManager.java

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/*
 * Copyright 2016 Victor Albertos
 *
 * 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 app.presentation.foundation.views;

import android.support.annotation.IdRes;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;

import javax.inject.Inject;

/**
 * Support class to work with fragments
 */
public class FragmentsManager {

    @Inject
    public FragmentsManager() {
    }

    /**
     * Gets the current fragment for the given {@code idFrameLayout}
     *
     * @param fragmentManager A {@link FragmentManager} object
     * @param idFrameLayout A {@link android.widget.FrameLayout} id
     * @return The current fragment loaded on {@code idFrameLayout}
     */
    public Fragment getCurrentFragment(FragmentManager fragmentManager, @IdRes int idFrameLayout) {
        return fragmentManager.findFragmentById(idFrameLayout);
    }

    /**
     * Replace the {@code classFragment} into the {@code idFrameLayout}
     *
     * @param fragmentManager A {@link FragmentManager} object
     * @param idFrameLayout A {@link android.widget.FrameLayout} id
     * @param classFragment A {@link Fragment} class
     * @return true if the replacement was performed, false otherwise
     */
    public boolean replaceFragment(FragmentManager fragmentManager, @IdRes int idFrameLayout,
            Class<? extends Fragment> classFragment) {
        return replaceFragment(fragmentManager, idFrameLayout, classFragment, false);
    }

    /**
     * Replace the {@code classFragment} into the {@code idFrameLayout}
     *
     * @param fragmentManager A {@link FragmentManager} object
     * @param idFrameLayout A {@link android.widget.FrameLayout} id
     * @param classFragment A {@link Fragment} class
     * @param forceReplacement true to force replacement, false to perform the replacement if the
     *                         current fragment is not currently loaded on {@code idFrameLayout}
     * @return true if the replacement was performed, false otherwise
     */
    public boolean replaceFragment(FragmentManager fragmentManager, @IdRes int idFrameLayout,
            Class<? extends Fragment> classFragment, boolean forceReplacement) {
        try {
            Fragment fragment = classFragment.newInstance();
            Fragment current = getCurrentFragment(fragmentManager, idFrameLayout);

            boolean replace = forceReplacement || current == null || current.getClass() != classFragment;

            if (replace) {
                fragmentManager.beginTransaction().replace(idFrameLayout, fragment).commit();
            }

            return replace;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
}