src/com/android/mms/ui/MessagingPreferenceActivity.java

/*
 * Copyright (C) 2007-2008 Esmertec AG.
 * Copyright (C) 2007-2008 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.android.mms.ui;

import com.android.mms.MmsConfig;
import com.android.mms.R;

import android.content.Intent;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceCategory;
import android.preference.PreferenceManager;
import android.preference.PreferenceScreen;
import android.telephony.TelephonyManager;
import android.view.Menu;
import android.view.MenuItem;

import com.android.mms.util.Recycler;

/**
 * With this activity, users can set preferences for MMS and SMS and
 * can access and manipulate SMS messages stored on the SIM.
 */
public class MessagingPreferenceActivity extends PreferenceActivity {
    // Symbolic names for the keys used for preference lookup
    public static final String MMS_DELIVERY_REPORT_MODE = "pref_key_mms_delivery_reports";
    public static final String EXPIRY_TIME              = "pref_key_mms_expiry";
    public static final String PRIORITY                 = "pref_key_mms_priority";
    public static final String READ_REPORT_MODE         = "pref_key_mms_read_reports";
    public static final String SMS_DELIVERY_REPORT_MODE = "pref_key_sms_delivery_reports";
    public static final String NOTIFICATION_ENABLED     = "pref_key_enable_notifications";
    public static final String NOTIFICATION_VIBRATE     = "pref_key_vibrate";
    public static final String NOTIFICATION_RINGTONE    = "pref_key_ringtone";
    public static final String AUTO_RETRIEVAL           = "pref_key_mms_auto_retrieval";
    public static final String RETRIEVAL_DURING_ROAMING = "pref_key_mms_retrieval_during_roaming";
    public static final String AUTO_DELETE              = "pref_key_auto_delete";

    // Menu entries
    private static final int MENU_RESTORE_DEFAULTS    = 1;

    private Preference mSmsLimitPref;
    private Preference mMmsLimitPref;
    private Preference mManageSimPref;
    private Recycler mSmsRecycler;
    private Recycler mMmsRecycler;

    @Override
    protected void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        addPreferencesFromResource(R.xml.preferences);

        mManageSimPref = findPreference("pref_key_manage_sim_messages");
        mSmsLimitPref = findPreference("pref_key_sms_delete_limit");
        mMmsLimitPref = findPreference("pref_key_mms_delete_limit");

        if (!TelephonyManager.getDefault().hasIccCard()) {
            // No SIM card, remove the SIM-related prefs
            PreferenceCategory smsCategory =
                (PreferenceCategory)findPreference("pref_key_sms_settings");
            smsCategory.removePreference(mManageSimPref);
        }
        if (!MmsConfig.getMmsEnabled()) {
            // No Mms, remove all the mms-related preferences
            PreferenceCategory mmsOptions =
                (PreferenceCategory)findPreference("pref_key_mms_settings");
            getPreferenceScreen().removePreference(mmsOptions);

            PreferenceCategory storageOptions =
                (PreferenceCategory)findPreference("pref_key_storage_settings");
            storageOptions.removePreference(findPreference("pref_key_mms_delete_limit"));
        }

        mSmsRecycler = Recycler.getSmsRecycler();
        mMmsRecycler = Recycler.getMmsRecycler();

        // Fix up the recycler's summary with the correct values
        setSmsDisplayLimit();
        setMmsDisplayLimit();
    }

    private void setSmsDisplayLimit() {
        mSmsLimitPref.setSummary(
                getString(R.string.pref_summary_delete_limit,
                        mSmsRecycler.getMessageLimit(this)));
    }

    private void setMmsDisplayLimit() {
        mMmsLimitPref.setSummary(
                getString(R.string.pref_summary_delete_limit,
                        mMmsRecycler.getMessageLimit(this)));
    }

    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);
        menu.clear();
        menu.add(0, MENU_RESTORE_DEFAULTS, 0, R.string.restore_default);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case MENU_RESTORE_DEFAULTS:
                restoreDefaultPreferences();
                return true;
        }
        return false;
    }

    @Override
    public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,
            Preference preference) {
        if (preference == mSmsLimitPref) {
            new NumberPickerDialog(this,
                    mSmsLimitListener,
                    mSmsRecycler.getMessageLimit(this),
                    mSmsRecycler.getMessageMinLimit(),
                    mSmsRecycler.getMessageMaxLimit(),
                    R.string.pref_title_sms_delete).show();
        } else if (preference == mMmsLimitPref) {
            new NumberPickerDialog(this,
                    mMmsLimitListener,
                    mMmsRecycler.getMessageLimit(this),
                    mMmsRecycler.getMessageMinLimit(),
                    mMmsRecycler.getMessageMaxLimit(),
                    R.string.pref_title_mms_delete).show();
        } else if (preference == mManageSimPref) {
            startActivity(new Intent(this, ManageSimMessages.class));
        }

        return super.onPreferenceTreeClick(preferenceScreen, preference);
    }


    private void restoreDefaultPreferences() {
        PreferenceManager.getDefaultSharedPreferences(this)
                .edit().clear().commit();
        setPreferenceScreen(null);
        addPreferencesFromResource(R.xml.preferences);
    }

    NumberPickerDialog.OnNumberSetListener mSmsLimitListener =
        new NumberPickerDialog.OnNumberSetListener() {
            public void onNumberSet(int limit) {
                mSmsRecycler.setMessageLimit(MessagingPreferenceActivity.this, limit);
                setSmsDisplayLimit();
            }
    };

    NumberPickerDialog.OnNumberSetListener mMmsLimitListener =
        new NumberPickerDialog.OnNumberSetListener() {
            public void onNumberSet(int limit) {
                mMmsRecycler.setMessageLimit(MessagingPreferenceActivity.this, limit);
                setMmsDisplayLimit();
            }
    };
}