NotesPreferenceActivity.java

    /*
     * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
     *
     * 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 net.micode.notes.ui;

    import android.accounts.Account;
    import android.accounts.AccountManager;
    import android.app.ActionBar;
    import android.app.AlertDialog;
    import android.content.BroadcastReceiver;
    import android.content.ContentValues;
    import android.content.Context;
    import android.content.DialogInterface;
    import android.content.Intent;
    import android.content.IntentFilter;
    import android.content.SharedPreferences;
    import android.os.Bundle;
    import android.preference.Preference;
    import android.preference.Preference.OnPreferenceClickListener;
    import android.preference.PreferenceActivity;
    import android.preference.PreferenceCategory;
    import android.text.TextUtils;
    import android.text.format.DateFormat;
    import android.view.LayoutInflater;
    import android.view.Menu;
    import android.view.MenuItem;
    import android.view.View;
    import android.widget.Button;
    import android.widget.TextView;
    import android.widget.Toast;

    import net.micode.notes.R;
    import net.micode.notes.data.Notes;
    import net.micode.notes.data.Notes.NoteColumns;
    import net.micode.notes.gtask.remote.GTaskSyncService;

    public class NotesPreferenceActivity extends PreferenceActivity {
        public static final String PREFERENCE_NAME = "notes_preferences";

        public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name";

        public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time";

        public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear";

        private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key";

        private static final String AUTHORITIES_FILTER_KEY = "authorities";

        private PreferenceCategory mAccountCategory;

        private GTaskReceiver mReceiver;

        private Account[] mOriAccounts;

        private boolean mHasAddedAccount;

        @Override
        protected void onCreate(Bundle icicle) {
            super.onCreate(icicle);

            /* using the app icon for navigation */
            getActionBar().setDisplayHomeAsUpEnabled(true);

            addPreferencesFromResource(R.xml.preferences);
            mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY);
            mReceiver = new GTaskReceiver();
            IntentFilter filter = new IntentFilter();
            filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME);
            registerReceiver(mReceiver, filter);

            mOriAccounts = null;
            View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null);
            getListView().addHeaderView(header, null, true);
        }

        @Override
        protected void onResume() {
            super.onResume();

            // need to set sync account automatically if user has added a new
            // account
            if (mHasAddedAccount) {
                Account[] accounts = getGoogleAccounts();
                if (mOriAccounts != null && accounts.length > mOriAccounts.length) {
                    for (Account accountNew : accounts) {
                        boolean found = false;
                        for (Account accountOld : mOriAccounts) {
                            if (TextUtils.equals(accountOld.name, accountNew.name)) {
                                found = true;
                                break;
                            }
                        }
                        if (!found) {
                            setSyncAccount(accountNew.name);
                            break;
                        }
                    }
                }
            }

            refreshUI();
        }

        @Override
        protected void onDestroy() {
            if (mReceiver != null) {
                unregisterReceiver(mReceiver);
            }
            super.onDestroy();
        }

        private void loadAccountPreference() {
            mAccountCategory.removeAll();

            Preference accountPref = new Preference(this);
            final String defaultAccount = getSyncAccountName(this);
            accountPref.setTitle(getString(R.string.preferences_account_title));
            accountPref.setSummary(getString(R.string.preferences_account_summary));
            accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {
                public boolean onPreferenceClick(Preference preference) {
                    if (!GTaskSyncService.isSyncing()) {
                        if (TextUtils.isEmpty(defaultAccount)) {
                            // the first time to set account
                            showSelectAccountAlertDialog();
                        } else {
                            // if the account has already been set, we need to promp
                            // user about the risk
                            showChangeAccountConfirmAlertDialog();
                        }
                    } else {
                        Toast.makeText(NotesPreferenceActivity.this,
                                R.string.preferences_toast_cannot_change_account, Toast.LENGTH_SHORT)
                                .show();
                    }
                    return true;
                }
            });

            mAccountCategory.addPreference(accountPref);
        }

        private void loadSyncButton() {
            Button syncButton = (Button) findViewById(R.id.preference_sync_button);
            TextView lastSyncTimeView = (TextView) findViewById(R.id.prefenerece_sync_status_textview);

            // set button state
            if (GTaskSyncService.isSyncing()) {
                syncButton.setText(getString(R.string.preferences_button_sync_cancel));
                syncButton.setOnClickListener(new View.OnClickListener() {
                    public void onClick(View v) {
                        GTaskSyncService.cancelSync(NotesPreferenceActivity.this);
                    }
                });
            } else {
                syncButton.setText(getString(R.string.preferences_button_sync_immediately));
                syncButton.setOnClickListener(new View.OnClickListener() {
                    public void onClick(View v) {
                        GTaskSyncService.startSync(NotesPreferenceActivity.this);
                    }
                });
            }
            syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this)));

            // set last sync time
            if (GTaskSyncService.isSyncing()) {
                lastSyncTimeView.setText(GTaskSyncService.getProgressString());
                lastSyncTimeView.setVisibility(View.VISIBLE);
            } else {
                long lastSyncTime = getLastSyncTime(this);
                if (lastSyncTime != 0) {
                    lastSyncTimeView.setText(getString(R.string.preferences_last_sync_time,
                            DateFormat.format(getString(R.string.preferences_last_sync_time_format),
                                    lastSyncTime)));
                    lastSyncTimeView.setVisibility(View.VISIBLE);
                } else {
                    lastSyncTimeView.setVisibility(View.GONE);
                }
            }
        }

        private void refreshUI() {
            loadAccountPreference();
            loadSyncButton();
        }

        private void showSelectAccountAlertDialog() {
            AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);

            View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
            TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
            titleTextView.setText(getString(R.string.preferences_dialog_select_account_title));
            TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
            subtitleTextView.setText(getString(R.string.preferences_dialog_select_account_tips));

            dialogBuilder.setCustomTitle(titleView);
            dialogBuilder.setPositiveButton(null, null);

            Account[] accounts = getGoogleAccounts();
            String defAccount = getSyncAccountName(this);

            mOriAccounts = accounts;
            mHasAddedAccount = false;

            if (accounts.length > 0) {
                CharSequence[] items = new CharSequence[accounts.length];
                final CharSequence[] itemMapping = items;
                int checkedItem = -1;
                int index = 0;
                for (Account account : accounts) {
                    if (TextUtils.equals(account.name, defAccount)) {
                        checkedItem = index;
                    }
                    items[index++] = account.name;
                }
                dialogBuilder.setSingleChoiceItems(items, checkedItem,
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int which) {
                                setSyncAccount(itemMapping[which].toString());
                                dialog.dismiss();
                                refreshUI();
                            }
                        });
            }

            View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null);
            dialogBuilder.setView(addAccountView);

            final AlertDialog dialog = dialogBuilder.show();
            addAccountView.setOnClickListener(new View.OnClickListener() {
                public void onClick(View v) {
                    mHasAddedAccount = true;
                    Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS");
                    intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] {
                        "gmail-ls"
                    });
                    startActivityForResult(intent, -1);
                    dialog.dismiss();
                }
            });
        }

        private void showChangeAccountConfirmAlertDialog() {
            AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);

            View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
            TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
            titleTextView.setText(getString(R.string.preferences_dialog_change_account_title,
                    getSyncAccountName(this)));
            TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
            subtitleTextView.setText(getString(R.string.preferences_dialog_change_account_warn_msg));
            dialogBuilder.setCustomTitle(titleView);

            CharSequence[] menuItemArray = new CharSequence[] {
                    getString(R.string.preferences_menu_change_account),
                    getString(R.string.preferences_menu_remove_account),
                    getString(R.string.preferences_menu_cancel)
            };
            dialogBuilder.setItems(menuItemArray, new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int which) {
                    if (which == 0) {
                        showSelectAccountAlertDialog();
                    } else if (which == 1) {
                        removeSyncAccount();
                        refreshUI();
                    }
                }
            });
            dialogBuilder.show();
        }

        private Account[] getGoogleAccounts() {
            AccountManager accountManager = AccountManager.get(this);
            return accountManager.getAccountsByType("com.google");
        }

        private void setSyncAccount(String account) {
            if (!getSyncAccountName(this).equals(account)) {
                SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
                SharedPreferences.Editor editor = settings.edit();
                if (account != null) {
                    editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, account);
                } else {
                    editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
                }
                editor.commit();

                // clean up last sync time
                setLastSyncTime(this, 0);

                // clean up local gtask related info
                new Thread(new Runnable() {
                    public void run() {
                        ContentValues values = new ContentValues();
                        values.put(NoteColumns.GTASK_ID, "");
                        values.put(NoteColumns.SYNC_ID, 0);
                        getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null);
                    }
                }).start();

                Toast.makeText(NotesPreferenceActivity.this,
                        getString(R.string.preferences_toast_success_set_accout, account),
                        Toast.LENGTH_SHORT).show();
            }
        }

        private void removeSyncAccount() {
            SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
            SharedPreferences.Editor editor = settings.edit();
            if (settings.contains(PREFERENCE_SYNC_ACCOUNT_NAME)) {
                editor.remove(PREFERENCE_SYNC_ACCOUNT_NAME);
            }
            if (settings.contains(PREFERENCE_LAST_SYNC_TIME)) {
                editor.remove(PREFERENCE_LAST_SYNC_TIME);
            }
            editor.commit();

            // clean up local gtask related info
            new Thread(new Runnable() {
                public void run() {
                    ContentValues values = new ContentValues();
                    values.put(NoteColumns.GTASK_ID, "");
                    values.put(NoteColumns.SYNC_ID, 0);
                    getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null);
                }
            }).start();
        }

        public static String getSyncAccountName(Context context) {
            SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
                    Context.MODE_PRIVATE);
            return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
        }

        public static void setLastSyncTime(Context context, long time) {
            SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
                    Context.MODE_PRIVATE);
            SharedPreferences.Editor editor = settings.edit();
            editor.putLong(PREFERENCE_LAST_SYNC_TIME, time);
            editor.commit();
        }

        public static long getLastSyncTime(Context context) {
            SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
                    Context.MODE_PRIVATE);
            return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0);
        }

        private class GTaskReceiver extends BroadcastReceiver {

            @Override
            public void onReceive(Context context, Intent intent) {
                refreshUI();
                if (intent.getBooleanExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING, false)) {
                    TextView syncStatus = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
                    syncStatus.setText(intent
                            .getStringExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG));
                }

            }
        }

        public boolean onOptionsItemSelected(MenuItem item) {
            switch (item.getItemId()) {
                case android.R.id.home:
                    Intent intent = new Intent(this, NotesListActivity.class);
                    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                    startActivity(intent);
                    return true;
                default:
                    return false;
            }
        }
    }