com.deadpixels.light.clipper.Settings.java Source code

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Here is the source code for com.deadpixels.light.clipper.Settings.java

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/*******************************************************************************
 * Copyright 2007 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.deadpixels.light.clipper;

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.preference.CheckBoxPreference;
import android.preference.MultiSelectListPreference;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceScreen;
import android.support.v4.app.NavUtils;
import android.util.Log;
import android.view.KeyEvent;
import android.view.MenuItem;

import com.deadpixels.light.clipper.utils.ClipHelper;

/**
 * We are using a Preference Activity as a PreferenceFragment required high API levels. 
 * Note we do not call {@link #setTheme(int)} here since by default most settings in android are black themed. 
 * @author SkullKandy
 *
 */
public class Settings extends PreferenceActivity {

    public static final String KEY_PREF_CUR_THEME = "pref_key_current_theme";
    public static final String KEY_PREF_ENABLE_LINKS = "pref_key_enable_links_for";
    public static final String KEY_PREF_CLEAR_CLIPS = "pref_key_clear_clips";
    public static final String KEY_PREF_SHOW_SOURCE = "pref_key_show_source";
    public static final String KEY_PREF_BUILD_VERSION = "pref_key_build_version";

    private static final String SOURCE_URL = "https://github.com/daniel-c05/LightClipper";
    private static final String VERSION_UNAVAILABLE = "N/A";

    private static boolean shouldRestartHome = false;

    private Preference deleteClipsPref;
    private Preference showSourcePref;
    private Preference buildVersionPref;

    @SuppressWarnings("deprecation")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        addPreferencesFromResource(R.xml.preferences);
        deleteClipsPref = findPreference(KEY_PREF_CLEAR_CLIPS);
        showSourcePref = findPreference(KEY_PREF_SHOW_SOURCE);
        buildVersionPref = findPreference(KEY_PREF_BUILD_VERSION);
        findPreference(KEY_PREF_CUR_THEME).setOnPreferenceChangeListener(prefChangeListener);

        updateBuildVersionInfo();
    }

    private void updateBuildVersionInfo() {
        PackageManager pm = getPackageManager();
        String packageName = getPackageName();
        String versionName;
        try {
            PackageInfo info = pm.getPackageInfo(packageName, 0);
            versionName = info.versionName;
        } catch (PackageManager.NameNotFoundException e) {
            versionName = VERSION_UNAVAILABLE;
        }

        buildVersionPref.setSummary(packageName + " v" + versionName);
    }

    private static Preference.OnPreferenceChangeListener prefChangeListener = new Preference.OnPreferenceChangeListener() {
        @Override
        public boolean onPreferenceChange(Preference preference, Object value) {
            String prefName = preference.getTitle().toString();
            Log.v(Home.TAG, "Preference " + prefName + " changed");
            if (preference instanceof CheckBoxPreference || preference instanceof MultiSelectListPreference) {
                shouldRestartHome = true;
            }
            return true;
        }
    };

    @SuppressWarnings("deprecation")
    @Override
    public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
        if (preference == deleteClipsPref) {
            //Muestra un dialogo para evitar que el usuario borre la base de datos por error.
            showDeleteHistoryDialog();
        } else if (preference == showSourcePref) {
            showSourceCode();
        }
        return super.onPreferenceTreeClick(preferenceScreen, preference);
    }

    private void showSourceCode() {
        Intent showSourceIntent = new Intent();
        showSourceIntent.setAction(Intent.ACTION_VIEW);
        showSourceIntent.addCategory(Intent.CATEGORY_DEFAULT);
        showSourceIntent.setData(Uri.parse(SOURCE_URL));
        startActivity(showSourceIntent);
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK && shouldRestartHome) {
            Log.v(Home.TAG, "Restarting home");
            NavUtils.navigateUpFromSameTask(this);
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case android.R.id.home:
            NavUtils.navigateUpFromSameTask(this);
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    protected void showDeleteHistoryDialog() {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setMessage(R.string.pref_warning_clear_clips)
                .setPositiveButton(android.R.string.ok, new OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        ClipHelper.deleteClips(Settings.this);
                        shouldRestartHome = true;
                        dialog.dismiss();
                    }
                }).setCancelable(true).setNegativeButton(android.R.string.cancel, new OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                    }
                });
        AlertDialog dialog = builder.create();
        dialog.show();
    }
}