com.jrummyapps.busybox.dialogs.AppletUsageDialog.java Source code

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Here is the source code for com.jrummyapps.busybox.dialogs.AppletUsageDialog.java

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/*
 * Copyright (C) 2016 Jared Rummler <jared.rummler@gmail.com>
 *
 * 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.jrummyapps.busybox.dialogs;

import android.app.Activity;
import android.app.Dialog;
import android.app.DialogFragment;
import android.content.DialogInterface;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AlertDialog;
import android.text.TextUtils;
import android.util.LruCache;
import com.jrummyapps.android.analytics.Analytics;
import com.jrummyapps.android.radiant.Radiant;
import com.jrummyapps.android.roottools.box.BusyBox;
import com.jrummyapps.busybox.R;
import com.jrummyapps.busybox.utils.Utils;
import java.lang.ref.WeakReference;
import org.json.JSONException;
import org.json.JSONObject;

public class AppletUsageDialog extends DialogFragment {

    static final LruCache<String, String> APPLET_USAGE_CACHE = new LruCache<String, String>(15) {

        private String json;

        @Override
        protected String create(String key) {
            if (BusyBox.getInstance().exists()) {
                String usage = BusyBox.getInstance().getUsage(key);
                if (!TextUtils.isEmpty(usage)) {
                    return usage;
                }
            }
            if (json == null) {
                json = Utils.readRaw(R.raw.busybox_applets);
            }
            try {
                return new JSONObject(json).optString(key, null);
            } catch (JSONException e) {
                return null;
            }
        }
    };

    public static void show(Activity activity, String applet) {
        new AppletHelpTask(activity, applet).executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
    }

    public static void show(Activity activity, String applet, String help) {
        AppletUsageDialog dialog = new AppletUsageDialog();
        Bundle args = new Bundle();
        args.putString("applet_name", applet);
        args.putString("applet_help", help);
        dialog.setArguments(args);
        dialog.show(activity.getFragmentManager(), "AppletUsageDialog");
        Analytics.newEvent("dialog_applet_usage").put("applet", applet).log();
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        return new AlertDialog.Builder(getActivity()).setTitle(getArguments().getString("applet_name"))
                .setMessage(getArguments().getString("applet_help"))
                .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                    }
                }).create();
    }

    @Override
    public void onStart() {
        super.onStart();
        ((AlertDialog) getDialog()).getButton(AlertDialog.BUTTON_POSITIVE)
                .setTextColor(Radiant.getInstance(getActivity()).accentColor());
    }

    static final class AppletHelpTask extends AsyncTask<Void, Void, String> {

        private final WeakReference<Activity> activityRef;
        private final String applet;

        AppletHelpTask(Activity activity, String name) {
            activityRef = new WeakReference<>(activity);
            applet = name;
        }

        @Override
        protected String doInBackground(Void... params) {
            return APPLET_USAGE_CACHE.get(applet);
        }

        @Override
        protected void onPostExecute(String help) {
            Activity activity = activityRef.get();
            if (activity == null || activity.isFinishing()) {
                return;
            }
            AppletUsageDialog.show(activity, applet, help);
        }

    }

}