com.aetoslabs.quickfacts.AppCompatPreferenceActivity.java Source code

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Here is the source code for com.aetoslabs.quickfacts.AppCompatPreferenceActivity.java

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/*
 * Copyright (C) 2014 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.aetoslabs.quickfacts;

import android.content.Intent;
import android.content.res.Configuration;
import android.os.Bundle;
import android.preference.PreferenceActivity;
import android.support.annotation.LayoutRes;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.NavUtils;
import android.support.v4.app.TaskStackBuilder;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatDelegate;
import android.support.v7.widget.Toolbar;
import android.view.MenuInflater;
import android.view.View;
import android.view.ViewGroup;

/**
 * A {@link android.preference.PreferenceActivity} which implements and proxies the necessary calls
 * to be used with AppCompat.
 * <p/>
 * This technique can be used with an {@link android.app.Activity} class, not just
 * {@link android.preference.PreferenceActivity}.
 */
public abstract class AppCompatPreferenceActivity extends PreferenceActivity {
    private AppCompatDelegate mDelegate;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        getDelegate().installViewFactory();
        getDelegate().onCreate(savedInstanceState);
        super.onCreate(savedInstanceState);
    }

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        getDelegate().onPostCreate(savedInstanceState);
    }

    public ActionBar getSupportActionBar() {
        return getDelegate().getSupportActionBar();
    }

    @Override
    public final boolean onMenuItemSelected(int featureId, android.view.MenuItem item) {
        if (super.onMenuItemSelected(featureId, item)) {
            return true;
        }

        final ActionBar ab = getSupportActionBar();
        if (item.getItemId() == android.R.id.home && ab != null
                && (ab.getDisplayOptions() & ActionBar.DISPLAY_HOME_AS_UP) != 0) {
            return onSupportNavigateUp();
        }
        return false;
    }

    public boolean onSupportNavigateUp() {
        Intent upIntent = getSupportParentActivityIntent();

        if (upIntent != null) {
            if (supportShouldUpRecreateTask(upIntent)) {
                TaskStackBuilder b = TaskStackBuilder.create(this);
                onCreateSupportNavigateUpTaskStack(b);
                onPrepareSupportNavigateUpTaskStack(b);
                b.startActivities();

                try {
                    ActivityCompat.finishAffinity(this);
                } catch (IllegalStateException e) {
                    // This can only happen on 4.1+, when we don't have a parent or a result set.
                    // In that case we should just finish().
                    finish();
                }
            } else {
                // This activity is part of the application's task, so simply
                // navigate up to the hierarchical parent activity.
                supportNavigateUpTo(upIntent);
            }
            return true;
        }
        return false;
    }

    public void supportNavigateUpTo(Intent upIntent) {
        NavUtils.navigateUpTo(this, upIntent);
    }

    public void onCreateSupportNavigateUpTaskStack(TaskStackBuilder builder) {
        builder.addParentStack(this);
    }

    public void onPrepareSupportNavigateUpTaskStack(TaskStackBuilder builder) {
    }

    public boolean supportShouldUpRecreateTask(Intent targetIntent) {
        return NavUtils.shouldUpRecreateTask(this, targetIntent);
    }

    @Nullable
    public Intent getSupportParentActivityIntent() {
        return NavUtils.getParentActivityIntent(this);
    }

    public void setSupportActionBar(@Nullable Toolbar toolbar) {
        getDelegate().setSupportActionBar(toolbar);
    }

    @Override
    public MenuInflater getMenuInflater() {
        return getDelegate().getMenuInflater();
    }

    @Override
    public void setContentView(@LayoutRes int layoutResID) {
        getDelegate().setContentView(layoutResID);
    }

    @Override
    public void setContentView(View view) {
        getDelegate().setContentView(view);
    }

    @Override
    public void setContentView(View view, ViewGroup.LayoutParams params) {
        getDelegate().setContentView(view, params);
    }

    @Override
    public void addContentView(View view, ViewGroup.LayoutParams params) {
        getDelegate().addContentView(view, params);
    }

    @Override
    protected void onPostResume() {
        super.onPostResume();
        getDelegate().onPostResume();
    }

    @Override
    protected void onTitleChanged(CharSequence title, int color) {
        super.onTitleChanged(title, color);
        getDelegate().setTitle(title);
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        getDelegate().onConfigurationChanged(newConfig);
    }

    @Override
    protected void onStop() {
        super.onStop();
        getDelegate().onStop();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        getDelegate().onDestroy();
    }

    public void invalidateOptionsMenu() {
        getDelegate().invalidateOptionsMenu();
    }

    private AppCompatDelegate getDelegate() {
        if (mDelegate == null) {
            mDelegate = AppCompatDelegate.create(this, null);
        }
        return mDelegate;
    }
}