com.google.reviewit.BaseFragment.java Source code

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Here is the source code for com.google.reviewit.BaseFragment.java

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// Copyright (C) 2016 The Android Open Source Project
//
// 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.google.reviewit;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.IdRes;
import android.support.annotation.LayoutRes;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.inputmethod.InputMethodManager;
import android.widget.TextView;

import com.google.reviewit.app.SortActionHandler;
import com.google.reviewit.app.ReviewItApp;
import com.google.reviewit.util.TaskObserver;
import com.google.reviewit.util.WidgetUtil;

import java.util.ArrayList;
import java.util.List;

public abstract class BaseFragment extends Fragment {
    protected View root;
    protected WidgetUtil widgetUtil;

    @Override
    public final View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        widgetUtil = new WidgetUtil(getActivity());
        reset(container);
        root = inflater.inflate(getLayout(), container, false);
        return root;
    }

    protected void reset(ViewGroup container) {
        container.removeAllViews();

        MainActivity activity = ((MainActivity) getActivity());
        activity.select(getClass());

        if (activity.getSupportActionBar() != null) {
            activity.getSupportActionBar().show();
        }

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            getWindow().setStatusBarColor(widgetUtil.color(R.color.black));
        }

        // hide keyboard if it is open
        View view = getActivity().getCurrentFocus();
        if (view != null) {
            ((InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE))
                    .hideSoftInputFromWindow(view.getWindowToken(), 0);
        }

        TaskObserver.clear();
    }

    protected abstract @LayoutRes int getLayout();

    protected View v(@IdRes int id) {
        return root.findViewById(id);
    }

    protected View[] v(@IdRes int id, @IdRes int... moreIds) {
        List<View> views = new ArrayList<>(moreIds.length + 1);
        views.add(v(id));
        for (@IdRes
        int yaId : moreIds) {
            views.add(v(yaId));
        }
        return views.toArray(new View[views.size()]);
    }

    protected ViewGroup vg(@IdRes int id) {
        return (ViewGroup) root.findViewById(id);
    }

    protected TextView tv(@IdRes int id) {
        return (TextView) root.findViewById(id);
    }

    protected String textOf(@IdRes int id) {
        return tv(id).getText().toString();
    }

    protected void setTitle(String title) {
        getActivity().setTitle(title);
    }

    @Override
    public Context getContext() {
        return root.getContext();
    }

    protected Window getWindow() {
        return getActivity().getWindow();
    }

    protected ReviewItApp getApp() {
        return ((ReviewItApp) getActivity().getApplication());
    }

    protected SortActionHandler getSortActionHandler() {
        return getApp().getSortActionHandler();
    }

    public void display(Class<? extends Fragment> fragmentClass, Bundle bundle, boolean addtoBackStack) {
        try {
            Fragment f = fragmentClass.newInstance();
            if (bundle != null) {
                f.setArguments(bundle);
            }
            display(f, addtoBackStack);
        } catch (IllegalAccessException e) {
            throw new IllegalStateException(e);
        } catch (java.lang.InstantiationException e) {
            throw new IllegalStateException(e);
        }
    }

    public void display(Class<? extends Fragment> fragmentClass) {
        display(fragmentClass, null, true);
    }

    public void display(Class<? extends Fragment> fragmentClass, boolean addToBackStack) {
        display(fragmentClass, null, addToBackStack);
    }

    public void display(Fragment fragment) {
        display(fragment, true);
    }

    public void display(Fragment fragment, boolean addToBackStack) {
        FragmentManager fragmentManager = getFragmentManager();
        FragmentTransaction t = fragmentManager.beginTransaction().replace(R.id.mainFrame, fragment);

        if (addToBackStack) {
            t.addToBackStack(null);
        }

        t.commit();
    }

    protected boolean isOnline() {
        ConnectivityManager cm = (ConnectivityManager) getActivity().getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo netInfo = cm.getActiveNetworkInfo();
        return netInfo != null && netInfo.isConnected();
    }
}