/*
 * 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.app.Activity;
import android.app.AlarmManager;
import android.app.AlertDialog;
import android.app.PendingIntent;
import android.app.SearchManager;
import android.appwidget.AppWidgetManager;
import android.content.ContentUris;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.graphics.Paint;
import android.os.Bundle;
import android.os.Handler;
import android.preference.PreferenceManager;
import android.text.Editable;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.text.format.DateUtils;
import android.text.style.BackgroundColorSpan;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.view.WindowManager;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ImageButton;
import android.widget.LinearLayout;
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.TextNote;
import net.micode.notes.model.WorkingNote;
import net.micode.notes.model.WorkingNote.NoteSettingChangedListener;
import net.micode.notes.tool.DataUtils;
import net.micode.notes.tool.ResourceParser;
import net.micode.notes.tool.ResourceParser.TextAppearanceResources;
import net.micode.notes.tool.VoiceRecognizer;
import net.micode.notes.ui.DateTimePickerDialog.OnDateTimeSetListener;
import net.micode.notes.ui.NoteEditText.OnTextViewChangeListener;
import net.micode.notes.widget.NoteWidgetProvider_2x;
import net.micode.notes.widget.NoteWidgetProvider_4x;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;


public class NoteEditActivity extends Activity implements OnClickListener,
        NoteSettingChangedListener, OnTextViewChangeListener {
    private class HeadViewHolder {
        public TextView tvModified;

        public ImageView ivAlertIcon;

        public TextView tvAlertDate;

        public ImageButton ibEncrypt;

        public ImageView ibSetBgColor;
    }

    private static final Map<Integer, Integer> sBgSelectorBtnsMap = new HashMap<Integer, Integer>();
    static {
        sBgSelectorBtnsMap.put(R.id.iv_bg_yellow, ResourceParser.YELLOW);
        sBgSelectorBtnsMap.put(R.id.iv_bg_red, ResourceParser.RED);
        sBgSelectorBtnsMap.put(R.id.iv_bg_blue, ResourceParser.BLUE);
        sBgSelectorBtnsMap.put(R.id.iv_bg_green, ResourceParser.GREEN);
        sBgSelectorBtnsMap.put(R.id.iv_bg_white, ResourceParser.WHITE);
    }

    private static final Map<Integer, Integer> sBgSelectorSelectionMap = new HashMap<Integer, Integer>();
    static {
        sBgSelectorSelectionMap.put(ResourceParser.YELLOW, R.id.iv_bg_yellow_select);
        sBgSelectorSelectionMap.put(ResourceParser.RED, R.id.iv_bg_red_select);
        sBgSelectorSelectionMap.put(ResourceParser.BLUE, R.id.iv_bg_blue_select);
        sBgSelectorSelectionMap.put(ResourceParser.GREEN, R.id.iv_bg_green_select);
        sBgSelectorSelectionMap.put(ResourceParser.WHITE, R.id.iv_bg_white_select);
    }

    private static final Map<Integer, Integer> sFontSizeBtnsMap = new HashMap<Integer, Integer>();
    static {
        sFontSizeBtnsMap.put(R.id.ll_font_large, ResourceParser.TEXT_LARGE);
        sFontSizeBtnsMap.put(R.id.ll_font_small, ResourceParser.TEXT_SMALL);
        sFontSizeBtnsMap.put(R.id.ll_font_normal, ResourceParser.TEXT_MEDIUM);
        sFontSizeBtnsMap.put(R.id.ll_font_super, ResourceParser.TEXT_SUPER);
    }

    private static final Map<Integer, Integer> sFontSelectorSelectionMap = new HashMap<Integer, Integer>();
    static {
        sFontSelectorSelectionMap.put(ResourceParser.TEXT_LARGE, R.id.iv_large_select);
        sFontSelectorSelectionMap.put(ResourceParser.TEXT_SMALL, R.id.iv_small_select);
        sFontSelectorSelectionMap.put(ResourceParser.TEXT_MEDIUM, R.id.iv_medium_select);
        sFontSelectorSelectionMap.put(ResourceParser.TEXT_SUPER, R.id.iv_super_select);
    }

    private static final String TAG = "NoteEditActivity";

    private HeadViewHolder mNoteHeaderHolder;

    private View mHeadViewPanel;

    private View mNoteBgColorSelector;

    private View mFontSizeSelector;

    private EditText mNoteEditor;

    private View mNoteEditorPanel;

    private WorkingNote mWorkingNote;

    private SharedPreferences mSharedPrefs;
    private int mFontSizeId;

    private static final String PREFERENCE_FONT_SIZE = "pref_font_size";

    private static final int SHORTCUT_ICON_TITLE_MAX_LEN = 10;

    public static final String TAG_CHECKED = String.valueOf('\u221A');
    public static final String TAG_UNCHECKED = String.valueOf('\u25A1');

    private LinearLayout mEditTextList;

    private String mUserQuery;
    private Pattern mPattern;

    // 语音识别相关
    private ImageButton mVoiceToTextButton;
    private VoiceRecognizer mVoiceRecognizer;

    // 记录密码验证状态
    private boolean mPasswordVerified = false;
    
    // 添加日志标签前缀，方便调试
    private static final String PASSWORD_TAG = "PasswordDebug";

    // 添加麦克风权限请求常量
    private static final int REQUEST_RECORD_AUDIO_PERMISSION = 200;

    // 添加自动保存相关变量
    private static final long AUTO_SAVE_INTERVAL = 30000; // 30秒自动保存一次
    private Handler mAutoSaveHandler = new Handler();
    private Runnable mAutoSaveRunnable = new Runnable() {
        @Override
        public void run() {
            if (mWorkingNote != null && !isFinishing()) {
                // 在后台静默保存，不打扰用户
                boolean saved = saveNote();
                Log.d(TAG, "自动保存笔记: " + (saved ? "成功" : "失败"));
                
                // 继续安排下一次自动保存
                mAutoSaveHandler.postDelayed(this, AUTO_SAVE_INTERVAL);
            }
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.setContentView(R.layout.note_edit);
        
        // 确保创建时密码验证状态为false
        mPasswordVerified = false;
        Log.d(PASSWORD_TAG, "onCreate: 重置密码验证状态");

        if (savedInstanceState == null && !initActivityState(getIntent())) {
            finish();
            return;
        }
        initResources();
    }

    /**
     * Current activity may be killed when the memory is low. Once it is killed, for another time
     * user load this activity, we should restore the former state
     */
    @Override
    protected void onRestoreInstanceState(Bundle savedInstanceState) {
        super.onRestoreInstanceState(savedInstanceState);
        if (savedInstanceState != null && savedInstanceState.containsKey(Intent.EXTRA_UID)) {
            Intent intent = new Intent(Intent.ACTION_VIEW);
            intent.putExtra(Intent.EXTRA_UID, savedInstanceState.getLong(Intent.EXTRA_UID));
            if (!initActivityState(intent)) {
                finish();
                return;
            }
            Log.d(TAG, "Restoring from killed activity");
        }
    }

    private boolean initActivityState(Intent intent) {
        /**
         * If the user specified the {@link Intent#ACTION_VIEW} but not provided with id,
         * then jump to the NotesListActivity
         */
        mWorkingNote = null;
        // 重置密码验证状态，确保每次打开新笔记都要验证密码
        mPasswordVerified = false;
        Log.d(PASSWORD_TAG, "initActivityState: 重置密码验证状态");

        if (TextUtils.equals(Intent.ACTION_VIEW, intent.getAction())) {
            long noteId = intent.getLongExtra(Intent.EXTRA_UID, 0);
            mUserQuery = "";

            /**
             * Starting from the searched result
             */
            if (intent.hasExtra(SearchManager.EXTRA_DATA_KEY)) {
                noteId = Long.parseLong(intent.getStringExtra(SearchManager.EXTRA_DATA_KEY));
                mUserQuery = intent.getStringExtra(SearchManager.USER_QUERY);
            }

            if (!DataUtils.visibleInNoteDatabase(getContentResolver(), noteId, Notes.TYPE_NOTE)) {
                Intent jump = new Intent(this, NotesListActivity.class);
                startActivity(jump);
                showToast(R.string.error_note_not_exist);
                finish();
                return false;
            } else {
                mWorkingNote = WorkingNote.load(this, noteId);
                if (mWorkingNote == null) {
                    Log.e(TAG, "load note failed with note id" + noteId);
                    finish();
                    return false;
                }
                
                // 记录加载笔记的锁定状态和密码哈希
                Log.d(PASSWORD_TAG, "initActivityState: 成功加载笔记，ID=" + noteId + 
                      ", 锁定状态=" + mWorkingNote.isLocked() + 
                      ", 密码哈希=" + (mWorkingNote.getPasswordHash().isEmpty() ? "空" : "非空"));
            }
            getWindow().setSoftInputMode(
                    WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN
                            | WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
        } else if(TextUtils.equals(Intent.ACTION_INSERT_OR_EDIT, intent.getAction())) {
            // New note
            long folderId = intent.getLongExtra(Notes.INTENT_EXTRA_FOLDER_ID, 0);
            int widgetId = intent.getIntExtra(Notes.INTENT_EXTRA_WIDGET_ID,
                    AppWidgetManager.INVALID_APPWIDGET_ID);
            int widgetType = intent.getIntExtra(Notes.INTENT_EXTRA_WIDGET_TYPE,
                    Notes.TYPE_WIDGET_INVALIDE);
            int bgResId = intent.getIntExtra(Notes.INTENT_EXTRA_BACKGROUND_ID,
                    ResourceParser.getDefaultBgId(this));

            // Parse call-record note
            String phoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
            long callDate = intent.getLongExtra(Notes.INTENT_EXTRA_CALL_DATE, 0);
            if (callDate != 0 && phoneNumber != null) {
                if (TextUtils.isEmpty(phoneNumber)) {
                    Log.w(TAG, "The call record number is null");
                }
                long noteId = 0;
                if ((noteId = DataUtils.getNoteIdByPhoneNumberAndCallDate(getContentResolver(),
                        phoneNumber, callDate)) > 0) {
                    mWorkingNote = WorkingNote.load(this, noteId);
                    if (mWorkingNote == null) {
                        Log.e(TAG, "load call note failed with note id" + noteId);
                        finish();
                        return false;
                    }
                } else {
                    mWorkingNote = WorkingNote.createEmptyNote(this, folderId, widgetId,
                            widgetType, bgResId);
                    mWorkingNote.convertToCallNote(phoneNumber, callDate);
                }
            } else {
                mWorkingNote = WorkingNote.createEmptyNote(this, folderId, widgetId, widgetType,
                        bgResId);
            }

            // 记录新笔记的锁定状态
            Log.d(PASSWORD_TAG, "initActivityState: 创建新笔记，锁定状态=" + mWorkingNote.isLocked());
            
            getWindow().setSoftInputMode(
                    WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE
                            | WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
        } else {
            Log.e(TAG, "Intent not specified action, should not support");
            finish();
            return false;
        }
        mWorkingNote.setOnSettingStatusChangedListener(this);
        return true;
    }

    @Override
    protected void onResume() {
        super.onResume();
        
        // 检查麦克风权限
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
            if (checkSelfPermission(android.Manifest.permission.RECORD_AUDIO) != 
                    PackageManager.PERMISSION_GRANTED) {
                requestPermissions(new String[]{android.Manifest.permission.RECORD_AUDIO}, 
                        REQUEST_RECORD_AUDIO_PERMISSION);
            }
        }
        
        // 每次恢复时重置密码验证状态
        mPasswordVerified = false;
        Log.d(PASSWORD_TAG, "onResume: 重置密码验证状态，笔记ID=" + (mWorkingNote != null ? mWorkingNote.getNoteId() : "无"));
        initNoteScreen();
        initVoiceRecognizer();
        
        // 启动自动保存
        mAutoSaveHandler.removeCallbacks(mAutoSaveRunnable);
        mAutoSaveHandler.postDelayed(mAutoSaveRunnable, AUTO_SAVE_INTERVAL);
    }

    private void initNoteScreen() {
        mNoteEditor.setTextAppearance(this, TextAppearanceResources
                .getTexAppearanceResource(mFontSizeId));
        
        // 先显示笔记内容
        if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
            switchToListMode(mWorkingNote.getContent());
        } else {
            mNoteEditor.setText(getHighlightQueryResult(mWorkingNote.getContent(), mUserQuery));
            mNoteEditor.setSelection(mNoteEditor.getText().length());
        }
        
        // 打印笔记的详细信息，用于调试
        Log.d(PASSWORD_TAG, "initNoteScreen: 笔记详细信息 - ID=" + mWorkingNote.getNoteId() + 
              ", 锁定状态=" + mWorkingNote.isLocked() + 
              ", 密码哈希=[" + mWorkingNote.getPasswordHash() + "]" +
              ", 验证状态=" + mPasswordVerified);
        
        // 如果笔记有锁且未验证，禁用编辑并要求验证
        if (mWorkingNote.isLocked() && !mPasswordVerified) {
            // 禁用编辑功能
            disableEditing();
            
            // 显示密码验证对话框
            final long noteId = mWorkingNote.getNoteId();
            final String passwordHash = mWorkingNote.getPasswordHash();
            
            if (passwordHash != null && !passwordHash.isEmpty()) {
                Log.d(PASSWORD_TAG, "initNoteScreen: 笔记已锁定需要验证密码，笔记ID=" + noteId);
                // 确保是在主线程上延迟显示对话框，避免Activity生命周期问题
                mNoteEditor.post(new Runnable() {
                    @Override
                    public void run() {
                        if (!isFinishing()) {
                            showPasswordDialog(noteId, passwordHash);
                        }
                    }
                });
            } else {
                // 密码哈希为空，但标记为锁定，这是异常情况
                Log.e(PASSWORD_TAG, "initNoteScreen: 错误 - 笔记标记为锁定但密码哈希为空，ID=" + noteId);
                // 修复这种异常情况 - 重置锁定状态
                mWorkingNote.setLocked(false, "");
                saveNote();
                enableEditing();
            }
        } else {
            Log.d(PASSWORD_TAG, "initNoteScreen: 笔记状态 - 锁定:" + mWorkingNote.isLocked() + 
                  ", 已验证:" + mPasswordVerified + ", 笔记ID:" + mWorkingNote.getNoteId());
            // 确保非锁定笔记可以编辑
            if (!mWorkingNote.isLocked()) {
                enableEditing();
            } else if (mPasswordVerified) {
                // 已验证的锁定笔记也可以编辑
                enableEditing();
            }
        }
        
        // 设置背景颜色
        for (Integer id : sBgSelectorSelectionMap.keySet()) {
            findViewById(sBgSelectorSelectionMap.get(id)).setVisibility(View.GONE);
        }
        mHeadViewPanel.setBackgroundResource(mWorkingNote.getTitleBgResId());
        mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId());
        
        // 设置修改日期
        mNoteHeaderHolder.tvModified.setText(DateUtils.formatDateTime(this,
                mWorkingNote.getModifiedDate(), DateUtils.FORMAT_SHOW_DATE
                        | DateUtils.FORMAT_NUMERIC_DATE | DateUtils.FORMAT_SHOW_TIME
                        | DateUtils.FORMAT_SHOW_YEAR));
        
        // 更新锁定按钮图标
        updateLockButtonIcon();
        
        // 显示提醒信息
        showAlertHeader();
    }

    private void showAlertHeader() {
        if (mWorkingNote.hasClockAlert()) {
            long time = System.currentTimeMillis();
            if (time > mWorkingNote.getAlertDate()) {
                mNoteHeaderHolder.tvAlertDate.setText(R.string.note_alert_expired);
            } else {
                mNoteHeaderHolder.tvAlertDate.setText(DateUtils.getRelativeTimeSpanString(
                        mWorkingNote.getAlertDate(), time, DateUtils.MINUTE_IN_MILLIS));
            }
            mNoteHeaderHolder.tvAlertDate.setVisibility(View.VISIBLE);
            mNoteHeaderHolder.ivAlertIcon.setVisibility(View.VISIBLE);
        } else {
            mNoteHeaderHolder.tvAlertDate.setVisibility(View.GONE);
            mNoteHeaderHolder.ivAlertIcon.setVisibility(View.GONE);
        };
    }

    @Override
    protected void onNewIntent(Intent intent) {
        super.onNewIntent(intent);
        setIntent(intent);
        
        // 重置密码验证状态，确保笔记间切换时要验证密码
        mPasswordVerified = false;
        Log.d(PASSWORD_TAG, "onNewIntent: 重置密码验证状态");
        
        // 重新初始化笔记状态
        if (!initActivityState(intent)) {
            finish();
            return;
        }
        
        // 更新界面显示
        initNoteScreen();
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        /**
         * For new note without note id, we should firstly save it to
         * generate a id. If the editing note is not worth saving, there
         * is no id which is equivalent to create new note
         */
        if (!mWorkingNote.existInDatabase()) {
            saveNote();
        }
        outState.putLong(Intent.EXTRA_UID, mWorkingNote.getNoteId());
        Log.d(TAG, "Save working note id: " + mWorkingNote.getNoteId() + " onSaveInstanceState");
    }

    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        if (mNoteBgColorSelector.getVisibility() == View.VISIBLE
                && !inRangeOfView(mNoteBgColorSelector, ev)) {
            mNoteBgColorSelector.setVisibility(View.GONE);
            return true;
        }

        if (mFontSizeSelector.getVisibility() == View.VISIBLE
                && !inRangeOfView(mFontSizeSelector, ev)) {
            mFontSizeSelector.setVisibility(View.GONE);
            return true;
        }
        return super.dispatchTouchEvent(ev);
    }

    private boolean inRangeOfView(View view, MotionEvent ev) {
        int []location = new int[2];
        view.getLocationOnScreen(location);
        int x = location[0];
        int y = location[1];
        if (ev.getX() < x
                || ev.getX() > (x + view.getWidth())
                || ev.getY() < y
                || ev.getY() > (y + view.getHeight())) {
                    return false;
                }
        return true;
    }

    private void initResources() {
        mHeadViewPanel = findViewById(R.id.note_title);
        mNoteHeaderHolder = new HeadViewHolder();
        mNoteHeaderHolder.tvModified = (TextView) findViewById(R.id.tv_modified_date);
        mNoteHeaderHolder.ivAlertIcon = (ImageView) findViewById(R.id.iv_alert_icon);
        mNoteHeaderHolder.tvAlertDate = (TextView) findViewById(R.id.tv_alert_date);
        mNoteHeaderHolder.ibEncrypt = (ImageButton) findViewById(R.id.btn_note_encrypt);
        mNoteHeaderHolder.ibEncrypt.setOnClickListener(this);
        mNoteHeaderHolder.ibSetBgColor = (ImageView) findViewById(R.id.btn_set_bg_color);
        mNoteHeaderHolder.ibSetBgColor.setOnClickListener(this);
        mNoteEditor = (EditText) findViewById(R.id.note_edit_view);
        
        // 添加文本变化监听器，确保文本变化时保存
        mNoteEditor.addTextChangedListener(new TextWatcher() {
            private Handler mTextChangeHandler = new Handler();
            private Runnable mSaveRunnable = new Runnable() {
                @Override
                public void run() {
                    // 保存笔记但不显示提示
                    if (mNoteEditor != null && mWorkingNote != null) {
                        // 直接从编辑器获取内容
                        String content = mNoteEditor.getText().toString();
                        Log.d(TAG, "TextWatcher自动保存: 内容长度=" + content.length());
                        
                        // 直接设置内容
                        mWorkingNote.setWorkingText(content);
                        
                        // 保存
                        boolean saved = mWorkingNote.saveNote();
                        Log.d(TAG, "TextWatcher自动保存: " + (saved ? "成功" : "失败") + 
                              ", 内容长度=" + mWorkingNote.getContent().length());
                    }
                }
            };
            
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
                // 不需要处理
            }
            
            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                // 不需要处理
            }
            
            @Override
            public void afterTextChanged(Editable s) {
                // 取消之前的保存任务，防止频繁保存
                mTextChangeHandler.removeCallbacks(mSaveRunnable);
                // 延迟保存，避免频繁IO操作
                mTextChangeHandler.postDelayed(mSaveRunnable, 1000); // 1秒后保存
            }
        });
        
        mNoteEditorPanel = findViewById(R.id.sv_note_edit);
        mNoteBgColorSelector = findViewById(R.id.note_bg_color_selector);
        for (int id : sBgSelectorBtnsMap.keySet()) {
            ImageView iv = (ImageView) findViewById(id);
            iv.setOnClickListener(this);
        }

        mFontSizeSelector = findViewById(R.id.font_size_selector);
        for (int id : sFontSizeBtnsMap.keySet()) {
            View view = findViewById(id);
            view.setOnClickListener(this);
        };
        mSharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);
        mFontSizeId = mSharedPrefs.getInt(PREFERENCE_FONT_SIZE, ResourceParser.BG_DEFAULT_FONT_SIZE);
        /**
         * HACKME: Fix bug of store the resource id in shared preference.
         * The id may larger than the length of resources, in this case,
         * return the {@link ResourceParser#BG_DEFAULT_FONT_SIZE}
         */
        if(mFontSizeId >= TextAppearanceResources.getResourcesSize()) {
            mFontSizeId = ResourceParser.BG_DEFAULT_FONT_SIZE;
        }
        mEditTextList = (LinearLayout) findViewById(R.id.note_edit_list);
        
        // 初始化语音转文字按钮
        mVoiceToTextButton = (ImageButton) findViewById(R.id.btn_voice_to_text);
        mVoiceToTextButton.setOnTouchListener(new View.OnTouchListener() {
            private Toast mCurrentToast;
            private boolean mIsRecognizing = false;
            private Handler mHandler = new Handler();
            private Runnable mTipRunnable = new Runnable() {
                @Override
                public void run() {
                    if (mIsRecognizing) {
                        // 每两秒提醒用户说话
                        if (mCurrentToast != null) {
                            mCurrentToast.cancel();
                        }
                        mCurrentToast = Toast.makeText(NoteEditActivity.this, 
                            "请对着麦克风说话...", Toast.LENGTH_SHORT);
                        mCurrentToast.show();
                        mHandler.postDelayed(this, 2000);
                    }
                }
            };
            
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                if (event.getAction() == MotionEvent.ACTION_DOWN) {
                    // 检查麦克风权限
                    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
                        if (checkSelfPermission(android.Manifest.permission.RECORD_AUDIO) != 
                                PackageManager.PERMISSION_GRANTED) {
                            requestPermissions(new String[]{android.Manifest.permission.RECORD_AUDIO}, 
                                    REQUEST_RECORD_AUDIO_PERMISSION);
                            return true;
                        }
                    }
                    
                    // 按下时开始语音识别
                    if (mVoiceRecognizer != null) {
                        // 显示录音开始提示
                        if (mCurrentToast != null) {
                            mCurrentToast.cancel();
                        }
                        mCurrentToast = Toast.makeText(NoteEditActivity.this, 
                            "开始录音，请说话...", Toast.LENGTH_SHORT);
                        mCurrentToast.show();
                        
                        mIsRecognizing = true;
                        
                        // 延迟启动提示定时器
                        mHandler.postDelayed(mTipRunnable, 1500);
                        
                        try {
                            mVoiceRecognizer.startRecognizing();
                        } catch (Exception e) {
                            Log.e(TAG, "启动语音识别异常", e);
                            showToast("启动语音识别失败，请重试");
                            mIsRecognizing = false;
                            mHandler.removeCallbacks(mTipRunnable);
                        }
                    } else {
                        showToast(R.string.toast_voice_to_text_init);
                        initVoiceRecognizer();
                        
                        // 短暂延迟后再次尝试启动
                        new Handler().postDelayed(new Runnable() {
                            @Override
                            public void run() {
                                if (mVoiceRecognizer != null && mIsRecognizing) {
                                    try {
                                        mVoiceRecognizer.startRecognizing();
                                    } catch (Exception e) {
                                        Log.e(TAG, "延迟启动语音识别异常", e);
                                        mIsRecognizing = false;
                                        mHandler.removeCallbacks(mTipRunnable);
                                    }
                                }
                            }
                        }, 300);
                    }
                    
                    // 视觉反馈
                    v.setPressed(true);
                    return true;
                } else if (event.getAction() == MotionEvent.ACTION_UP || 
                           event.getAction() == MotionEvent.ACTION_CANCEL) {
                    // 松开时停止语音识别
                    if (mVoiceRecognizer != null) {
                        try {
                            // 取消定时提示
                            mIsRecognizing = false;
                            mHandler.removeCallbacks(mTipRunnable);
                            
                            // 显示结束提示
                            if (mCurrentToast != null) {
                                mCurrentToast.cancel();
                            }
                            mCurrentToast = Toast.makeText(NoteEditActivity.this, 
                                "正在识别中...", Toast.LENGTH_SHORT);
                            mCurrentToast.show();
                            
                            mVoiceRecognizer.stopRecognizing();
                        } catch (Exception e) {
                            Log.e(TAG, "停止语音识别异常", e);
                        }
                    }
                    
                    // 视觉反馈
                    v.setPressed(false);
                    return true;
                }
                return false;
            }
        });
        
        // 根据笔记的锁定状态设置锁定按钮图标
        updateLockButtonIcon();
    }

    /**
     * 初始化语音识别器
     */
    private void initVoiceRecognizer() {
        if (mVoiceRecognizer == null) {
            mVoiceRecognizer = new VoiceRecognizer(this);
            mVoiceRecognizer.setListener(new VoiceRecognizer.OnRecognitionListener() {
                @Override
                public void onResult(String result) {
                    if (result == null || result.isEmpty()) {
                        Log.w(TAG, "语音识别结果为空");
                        return;
                    }
                    
                    Log.d(TAG, "收到语音识别结果: [" + result + "]");
                    
                    // 获取当前光标位置
                    int position = mNoteEditor.getSelectionStart();
                    // 在光标位置插入识别结果
                    if (position != -1) {
                        Editable editable = mNoteEditor.getText();
                        editable.insert(position, result);
                        // 更新光标位置到插入文本之后
                        mNoteEditor.setSelection(position + result.length());
                    } else {
                        // 如果没有光标，则追加到文本末尾
                        mNoteEditor.append(result);
                        // 设置光标到末尾
                        mNoteEditor.setSelection(mNoteEditor.getText().length());
                    }
                    
                    // 确保编辑器获得焦点
                    mNoteEditor.requestFocus();
                    
                    // 强制进行内容保存
                    try {
                        String currentText = mNoteEditor.getText().toString();
                        Log.d(TAG, "语音识别保存: 当前编辑器内容长度=" + currentText.length());
                        
                        // 直接设置工作笔记内容
                        mWorkingNote.setWorkingText(currentText);
                        
                        // 立即保存笔记
                        boolean saveResult = mWorkingNote.saveNote();
                        Log.d(TAG, "语音识别内容保存结果: " + (saveResult ? "成功" : "失败") + 
                              ", 内容长度=" + mWorkingNote.getContent().length());
                        
                        // 新增：强制同步数据到数据表
                        if (mWorkingNote.getNoteId() > 0) {
                            boolean syncResult = mWorkingNote.syncNote();
                            Log.d(TAG, "语音识别同步结果: " + (syncResult ? "成功" : "失败"));
                        }
                        
                        // 如果保存失败，强制重试
                        if (!saveResult) {
                            // 确保内容被设置
                            mWorkingNote.setWorkingText(mNoteEditor.getText().toString());
                            
                            // 再次尝试保存
                            boolean retryResult = mWorkingNote.saveNote();
                            Log.d(TAG, "语音识别内容保存重试: " + (retryResult ? "成功" : "失败") + 
                                  ", 内容长度=" + mWorkingNote.getContent().length());
                            
                            // 再次尝试同步
                            if (mWorkingNote.getNoteId() > 0) {
                                mWorkingNote.syncNote();
                            }
                            
                            if (!retryResult) {
                                // 如果还是失败，尝试直接保存到数据库
                                boolean dbSaveResult = saveNote();
                                Log.d(TAG, "语音识别内容直接保存: " + (dbSaveResult ? "成功" : "失败"));
                                
                                // 最后一次尝试同步
                                if (mWorkingNote.getNoteId() > 0) {
                                    mWorkingNote.syncNote();
                                }
                            }
                        }
                        
                        // 显示成功提示
                        showToast(R.string.toast_voice_to_text_success);
                    } catch (Exception e) {
                        Log.e(TAG, "语音识别保存异常", e);
                        showToast("保存失败，请手动保存");
                    }
                }
                
                @Override
                public void onError(int code, String message) {
                    // 对不同错误显示不同的提示
                    if (code == 10118) {
                        // 用户没有说话
                        showToast("未检测到语音，请靠近麦克风并大声说话");
                    } else if (code == 20006) {
                        // 录音失败
                        showToast("麦克风录音失败，请检查权限或重启应用");
                    } else {
                        // 其他错误
                        showToast(R.string.toast_voice_to_text_failed);
                    }
                    Log.e(TAG, "语音识别错误: " + message);
                }
            });
        }
    }

    @Override
    protected void onPause() {
        super.onPause();
        
        // 停止自动保存
        mAutoSaveHandler.removeCallbacks(mAutoSaveRunnable);
        
        // 确保获取最新编辑器内容进行保存
        if (mWorkingNote != null && mNoteEditor != null) {
            String currentText = mNoteEditor.getText().toString();
            Log.d(TAG, "onPause: 准备保存笔记，当前内容长度=" + currentText.length());
            
            // 直接设置内容
            mWorkingNote.setWorkingText(currentText);
        }
        
        if(saveNote()) {
            Log.d(TAG, "Note data was saved with length:" + mWorkingNote.getContent().length());
            
            // 添加强制同步
            try {
                if (mWorkingNote != null && mWorkingNote.getNoteId() > 0) {
                    mWorkingNote.syncNote();
                    Log.d(TAG, "onPause: 强制同步数据到数据表 - ID=" + mWorkingNote.getNoteId() + 
                          ", 内容长度=" + mWorkingNote.getContent().length());
                }
            } catch (Exception e) {
                Log.e(TAG, "onPause: 同步数据异常", e);
            }
        } else {
            Log.e(TAG, "Failed to save note data in onPause");
            // 强制再次尝试保存
            if (mNoteEditor != null) {
                String text = mNoteEditor.getText().toString();
                mWorkingNote.setWorkingText(text);
            }
            boolean forceSaved = mWorkingNote.saveNote();
            Log.d(TAG, "Force save result: " + (forceSaved ? "成功" : "失败") + 
                  ", 内容长度=" + mWorkingNote.getContent().length());
            
            // 即使保存失败也尝试同步
            try {
                if (mWorkingNote != null && mWorkingNote.getNoteId() > 0) {
                    mWorkingNote.syncNote();
                    Log.d(TAG, "onPause: 重试强制同步数据到数据表");
                }
            } catch (Exception e) {
                Log.e(TAG, "onPause: 重试同步数据异常", e);
            }
        }
        clearSettingState();
        
        // 重置密码验证状态
        mPasswordVerified = false;
        Log.d(PASSWORD_TAG, "onPause: 重置密码验证状态");
        
        // 停止语音识别
        if (mVoiceRecognizer != null) {
            mVoiceRecognizer.stopRecognizing();
        }
    }

    @Override
    protected void onDestroy() {
        // 确保在应用销毁前强制保存笔记
        if (mWorkingNote != null) {
            Log.d(TAG, "onDestroy: 应用即将销毁，强制保存笔记");
            
            // 获取最新的编辑器内容
            if (mNoteEditor != null) {
                String currentText = mNoteEditor.getText().toString();
                Log.d(TAG, "onDestroy: 最终内容长度=" + currentText.length());
                mWorkingNote.setWorkingText(currentText);
            }
            
            // 保存当前编辑内容
            boolean saved = mWorkingNote.saveNote();
            
            // 关键修改：强制同步数据到数据表
            try {
                if (mWorkingNote.getNoteId() > 0) {
                    // 强制同步到数据表
                    mWorkingNote.syncNote();
                    Log.d(TAG, "onDestroy: 强制同步数据到数据表 - ID=" + mWorkingNote.getNoteId() + 
                          ", 内容长度=" + mWorkingNote.getContent().length());
                }
            } catch (Exception e) {
                Log.e(TAG, "onDestroy: 同步数据异常", e);
            }
            
            // 如果保存失败，重试一次
            if (!saved) {
                Log.w(TAG, "onDestroy: 首次保存失败，重试中...");
                if (mNoteEditor != null) {
                    // 再次尝试获取内容并保存
                    String text = mNoteEditor.getText().toString();
                    mWorkingNote.setWorkingText(text);
                }
                saved = mWorkingNote.saveNote();
                // 再次强制同步
                try {
                    if (mWorkingNote.getNoteId() > 0) {
                        mWorkingNote.syncNote();
                    }
                } catch (Exception e) {
                    Log.e(TAG, "onDestroy: 重试同步数据异常", e);
                }
                
                Log.d(TAG, "onDestroy: 重试保存结果: " + (saved ? "成功" : "失败") + 
                      ", 内容长度=" + (mWorkingNote.getContent() != null ? 
                      mWorkingNote.getContent().length() : 0));
            }
        }
        
        super.onDestroy();
        // 释放语音识别器
        if (mVoiceRecognizer != null) {
            mVoiceRecognizer.destroy();
            mVoiceRecognizer = null;
        }
    }

    @Override
    protected void onStop() {
        super.onStop();
        // 退出Activity时重置密码验证状态
        mPasswordVerified = false;
        Log.d(PASSWORD_TAG, "onStop: 重置密码验证状态");
    }

    /**
     * 禁用所有编辑功能
     */
    private void disableEditing() {
        Log.d(PASSWORD_TAG, "disableEditing: 禁用编辑功能, 笔记ID=" + 
              (mWorkingNote != null ? mWorkingNote.getNoteId() : "无"));
        
        // 禁用普通编辑模式
        mNoteEditor.setEnabled(false);
        
        // 禁用列表编辑模式
        for (int i = 0; i < mEditTextList.getChildCount(); i++) {
            View itemView = mEditTextList.getChildAt(i);
            NoteEditText editText = itemView.findViewById(R.id.et_edit_text);
            if (editText != null) {
                editText.setEnabled(false);
            }
            CheckBox checkBox = itemView.findViewById(R.id.cb_edit_item);
            if (checkBox != null) {
                checkBox.setEnabled(false);
            }
        }
    }
    
    /**
     * 启用所有编辑功能
     */
    private void enableEditing() {
        Log.d(PASSWORD_TAG, "enableEditing: 启用编辑功能, 笔记ID=" + 
              (mWorkingNote != null ? mWorkingNote.getNoteId() : "无"));
        
        // 启用普通编辑模式
        mNoteEditor.setEnabled(true);
        
        // 启用列表编辑模式
        for (int i = 0; i < mEditTextList.getChildCount(); i++) {
            View itemView = mEditTextList.getChildAt(i);
            NoteEditText editText = itemView.findViewById(R.id.et_edit_text);
            if (editText != null) {
                editText.setEnabled(true);
            }
            CheckBox checkBox = itemView.findViewById(R.id.cb_edit_item);
            if (checkBox != null) {
                checkBox.setEnabled(true);
            }
        }
    }

    private void updateWidget() {
        Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
        if (mWorkingNote.getWidgetType() == Notes.TYPE_WIDGET_2X) {
            intent.setClass(this, NoteWidgetProvider_2x.class);
        } else if (mWorkingNote.getWidgetType() == Notes.TYPE_WIDGET_4X) {
            intent.setClass(this, NoteWidgetProvider_4x.class);
        } else {
            Log.e(TAG, "Unspported widget type");
            return;
        }

        intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, new int[] {
            mWorkingNote.getWidgetId()
        });

        sendBroadcast(intent);
        setResult(RESULT_OK, intent);
    }

    public void onClick(View v) {
        int id = v.getId();
        if (id == R.id.btn_set_bg_color) {
            mNoteBgColorSelector.setVisibility(View.VISIBLE);
            findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility(
                    View.VISIBLE);
        } else if (id == R.id.btn_note_encrypt) {
            if (mWorkingNote.isLocked()) {
                // 解锁笔记
                showUnlockDialog();
            } else {
                // 锁定笔记
                showLockDialog();
            }
        } else if (sBgSelectorBtnsMap.containsKey(id)) {
            findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility(
                    View.GONE);
            mWorkingNote.setBgColorId(sBgSelectorBtnsMap.get(id));
            mNoteBgColorSelector.setVisibility(View.GONE);
        } else if (sFontSizeBtnsMap.containsKey(id)) {
            findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.GONE);
            mFontSizeId = sFontSizeBtnsMap.get(id);
            mSharedPrefs.edit().putInt(PREFERENCE_FONT_SIZE, mFontSizeId).commit();
            findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.VISIBLE);
            if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
                getWorkingText();
                switchToListMode(mWorkingNote.getContent());
            } else {
                mNoteEditor.setTextAppearance(this,
                        TextAppearanceResources.getTexAppearanceResource(mFontSizeId));
            }
            mFontSizeSelector.setVisibility(View.GONE);
        }
    }

    @Override
    public void onBackPressed() {
        if(clearSettingState()) {
            return;
        }

        saveNote();
        super.onBackPressed();
    }

    private boolean clearSettingState() {
        if (mNoteBgColorSelector.getVisibility() == View.VISIBLE) {
            mNoteBgColorSelector.setVisibility(View.GONE);
            return true;
        } else if (mFontSizeSelector.getVisibility() == View.VISIBLE) {
            mFontSizeSelector.setVisibility(View.GONE);
            return true;
        }
        return false;
    }

    public void onBackgroundColorChanged() {
        findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility(
                View.VISIBLE);
        mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId());
        mHeadViewPanel.setBackgroundResource(mWorkingNote.getTitleBgResId());
    }

    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        if (isFinishing()) {
            return true;
        }
        clearSettingState();
        menu.clear();
        if (mWorkingNote.getFolderId() == Notes.ID_CALL_RECORD_FOLDER) {
            getMenuInflater().inflate(R.menu.call_note_edit, menu);
        } else {
            getMenuInflater().inflate(R.menu.note_edit, menu);
        }
        if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
            menu.findItem(R.id.menu_list_mode).setTitle(R.string.menu_normal_mode);
        } else {
            menu.findItem(R.id.menu_list_mode).setTitle(R.string.menu_list_mode);
        }
        if (mWorkingNote.hasClockAlert()) {
            menu.findItem(R.id.menu_alert).setVisible(false);
        } else {
            menu.findItem(R.id.menu_delete_remind).setVisible(false);
        }
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.menu_new_note:
                createNewNote();
                break;
            case R.id.menu_delete:
                AlertDialog.Builder builder = new AlertDialog.Builder(this);
                builder.setTitle(getString(R.string.alert_title_delete));
                builder.setIcon(android.R.drawable.ic_dialog_alert);
                builder.setMessage(getString(R.string.alert_message_delete_note));
                builder.setPositiveButton(android.R.string.ok,
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int which) {
                                deleteCurrentNote();
                                finish();
                            }
                        });
                builder.setNegativeButton(android.R.string.cancel, null);
                builder.show();
                break;
            case R.id.menu_font_size:
                mFontSizeSelector.setVisibility(View.VISIBLE);
                findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.VISIBLE);
                break;
            case R.id.menu_list_mode:
                mWorkingNote.setCheckListMode(mWorkingNote.getCheckListMode() == 0 ?
                        TextNote.MODE_CHECK_LIST : 0);
                break;
            case R.id.menu_share:
                getWorkingText();
                sendTo(this, mWorkingNote.getContent());
                break;
            case R.id.menu_send_to_desktop:
                sendToDesktop();
                break;
            case R.id.menu_alert:
                setReminder();
                break;
            case R.id.menu_delete_remind:
                mWorkingNote.setAlertDate(0, false);
                break;
            default:
                break;
        }
        return true;
    }

    private void setReminder() {
        DateTimePickerDialog d = new DateTimePickerDialog(this, System.currentTimeMillis());
        d.setOnDateTimeSetListener(new OnDateTimeSetListener() {
            public void OnDateTimeSet(AlertDialog dialog, long date) {
                mWorkingNote.setAlertDate(date	, true);
            }
        });
        d.show();
    }

    /**
     * Share note to apps that support {@link Intent#ACTION_SEND} action
     * and {@text/plain} type
     */
    private void sendTo(Context context, String info) {
        Intent intent = new Intent(Intent.ACTION_SEND);
        intent.putExtra(Intent.EXTRA_TEXT, info);
        intent.setType("text/plain");
        context.startActivity(intent);
    }

    private void createNewNote() {
        // Firstly, save current editing notes
        saveNote();

        // 重置密码验证状态
        mPasswordVerified = false;
        Log.d(PASSWORD_TAG, "createNewNote: 重置密码验证状态");

        // For safety, start a new NoteEditActivity
        finish();
        Intent intent = new Intent(this, NoteEditActivity.class);
        intent.setAction(Intent.ACTION_INSERT_OR_EDIT);
        intent.putExtra(Notes.INTENT_EXTRA_FOLDER_ID, mWorkingNote.getFolderId());
        startActivity(intent);
    }

    private void deleteCurrentNote() {
        if (mWorkingNote.existInDatabase()) {
            HashSet<Long> ids = new HashSet<Long>();
            long id = mWorkingNote.getNoteId();
            if (id != Notes.ID_ROOT_FOLDER) {
                ids.add(id);
            } else {
                Log.d(TAG, "Wrong note id, should not happen");
            }
            if (!isSyncMode()) {
                if (!DataUtils.batchDeleteNotes(getContentResolver(), ids)) {
                    Log.e(TAG, "Delete Note error");
                }
            } else {
                if (!DataUtils.batchMoveToFolder(getContentResolver(), ids, Notes.ID_TRASH_FOLER)) {
                    Log.e(TAG, "Move notes to trash folder error, should not happens");
                }
            }
        }
        mWorkingNote.markDeleted(true);
    }

    private boolean isSyncMode() {
        return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0;
    }

    public void onClockAlertChanged(long date, boolean set) {
        /**
         * User could set clock to an unsaved note, so before setting the
         * alert clock, we should save the note first
         */
        if (!mWorkingNote.existInDatabase()) {
            saveNote();
        }
        if (mWorkingNote.getNoteId() > 0) {
            Intent intent = new Intent(this, AlarmReceiver.class);
            intent.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, mWorkingNote.getNoteId()));
            PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0);
            AlarmManager alarmManager = ((AlarmManager) getSystemService(ALARM_SERVICE));
            showAlertHeader();
            if(!set) {
                alarmManager.cancel(pendingIntent);
            } else {
                alarmManager.set(AlarmManager.RTC_WAKEUP, date, pendingIntent);
            }
        } else {
            /**
             * There is the condition that user has input nothing (the note is
             * not worthy saving), we have no note id, remind the user that he
             * should input something
             */
            Log.e(TAG, "Clock alert setting error");
            showToast(R.string.error_note_empty_for_clock);
        }
    }

    public void onWidgetChanged() {
        updateWidget();
    }

    public void onEditTextDelete(int index, String text) {
        int childCount = mEditTextList.getChildCount();
        if (childCount == 1) {
            return;
        }

        for (int i = index + 1; i < childCount; i++) {
            ((NoteEditText) mEditTextList.getChildAt(i).findViewById(R.id.et_edit_text))
                    .setIndex(i - 1);
        }

        mEditTextList.removeViewAt(index);
        NoteEditText edit = null;
        if(index == 0) {
            edit = (NoteEditText) mEditTextList.getChildAt(0).findViewById(
                    R.id.et_edit_text);
        } else {
            edit = (NoteEditText) mEditTextList.getChildAt(index - 1).findViewById(
                    R.id.et_edit_text);
        }
        int length = edit.length();
        edit.append(text);
        edit.requestFocus();
        edit.setSelection(length);
    }

    public void onEditTextEnter(int index, String text) {
        /**
         * Should not happen, check for debug
         */
        if(index > mEditTextList.getChildCount()) {
            Log.e(TAG, "Index out of mEditTextList boundrary, should not happen");
        }

        View view = getListItem(text, index);
        mEditTextList.addView(view, index);
        NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text);
        edit.requestFocus();
        edit.setSelection(0);
        for (int i = index + 1; i < mEditTextList.getChildCount(); i++) {
            ((NoteEditText) mEditTextList.getChildAt(i).findViewById(R.id.et_edit_text))
                    .setIndex(i);
        }
    }

    private void switchToListMode(String text) {
        mEditTextList.removeAllViews();
        String[] items = text.split("\n");
        int index = 0;
        for (String item : items) {
            if(!TextUtils.isEmpty(item)) {
                mEditTextList.addView(getListItem(item, index));
                index++;
            }
        }
        mEditTextList.addView(getListItem("", index));
        mEditTextList.getChildAt(index).findViewById(R.id.et_edit_text).requestFocus();

        mNoteEditor.setVisibility(View.GONE);
        mEditTextList.setVisibility(View.VISIBLE);
    }

    private Spannable getHighlightQueryResult(String fullText, String userQuery) {
        SpannableString spannable = new SpannableString(fullText == null ? "" : fullText);
        if (!TextUtils.isEmpty(userQuery)) {
            mPattern = Pattern.compile(userQuery);
            Matcher m = mPattern.matcher(fullText);
            int start = 0;
            while (m.find(start)) {
                spannable.setSpan(
                        new BackgroundColorSpan(this.getResources().getColor(
                                R.color.user_query_highlight)), m.start(), m.end(),
                        Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
                start = m.end();
            }
        }
        return spannable;
    }

    private View getListItem(String item, int index) {
        View view = LayoutInflater.from(this).inflate(R.layout.note_edit_list_item, null);
        final NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text);
        edit.setTextAppearance(this, TextAppearanceResources.getTexAppearanceResource(mFontSizeId));
        CheckBox cb = ((CheckBox) view.findViewById(R.id.cb_edit_item));
        cb.setOnCheckedChangeListener(new OnCheckedChangeListener() {
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if (isChecked) {
                    edit.setPaintFlags(edit.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
                } else {
                    edit.setPaintFlags(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG);
                }
            }
        });

        if (item.startsWith(TAG_CHECKED)) {
            cb.setChecked(true);
            edit.setPaintFlags(edit.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
            item = item.substring(TAG_CHECKED.length(), item.length()).trim();
        } else if (item.startsWith(TAG_UNCHECKED)) {
            cb.setChecked(false);
            edit.setPaintFlags(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG);
            item = item.substring(TAG_UNCHECKED.length(), item.length()).trim();
        }

        edit.setOnTextViewChangeListener(this);
        edit.setIndex(index);
        edit.setText(getHighlightQueryResult(item, mUserQuery));
        return view;
    }

    public void onTextChange(int index, boolean hasText) {
        if (index >= mEditTextList.getChildCount()) {
            Log.e(TAG, "Wrong index, should not happen");
            return;
        }
        if(hasText) {
            mEditTextList.getChildAt(index).findViewById(R.id.cb_edit_item).setVisibility(View.VISIBLE);
        } else {
            mEditTextList.getChildAt(index).findViewById(R.id.cb_edit_item).setVisibility(View.GONE);
        }
    }

    public void onCheckListModeChanged(int oldMode, int newMode) {
        if (newMode == TextNote.MODE_CHECK_LIST) {
            switchToListMode(mNoteEditor.getText().toString());
        } else {
            if (!getWorkingText()) {
                mWorkingNote.setWorkingText(mWorkingNote.getContent().replace(TAG_UNCHECKED + " ",
                        ""));
            }
            mNoteEditor.setText(getHighlightQueryResult(mWorkingNote.getContent(), mUserQuery));
            mEditTextList.setVisibility(View.GONE);
            mNoteEditor.setVisibility(View.VISIBLE);
        }
    }

    private boolean getWorkingText() {
        boolean hasChecked = false;
        if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < mEditTextList.getChildCount(); i++) {
                View view = mEditTextList.getChildAt(i);
                NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text);
                if (!TextUtils.isEmpty(edit.getText())) {
                    if (((CheckBox) view.findViewById(R.id.cb_edit_item)).isChecked()) {
                        sb.append(TAG_CHECKED).append(" ").append(edit.getText()).append("\n");
                        hasChecked = true;
                    } else {
                        sb.append(TAG_UNCHECKED).append(" ").append(edit.getText()).append("\n");
                    }
                }
            }
            mWorkingNote.setWorkingText(sb.toString());
        } else {
            mWorkingNote.setWorkingText(mNoteEditor.getText().toString());
        }
        return hasChecked;
    }

    private boolean saveNote() {
        // 直接从编辑器获取内容，而不依赖getWorkingText()
        if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
            // 如果是清单模式，使用原有方法获取工作文本
            getWorkingText();
        } else {
            // 如果是普通文本模式，直接获取编辑器内容
            String editorContent = mNoteEditor.getText().toString();
            Log.d(TAG, "saveNote: 从编辑器获取内容，长度=" + editorContent.length());
            mWorkingNote.setWorkingText(editorContent);
        }
        
        boolean saved = mWorkingNote.saveNote();
        if (saved) {
            /**
             * There are two modes from List view to edit view, open one note,
             * create/edit a node. Opening node requires to the original
             * position in the list when back from edit view, while creating a
             * new node requires to the top of the list. This code
             * {@link #RESULT_OK} is used to identify the create/edit state
             */
            setResult(RESULT_OK);
            
            // 在保存后记录当前笔记的锁定状态
            Log.d(PASSWORD_TAG, "saveNote: 笔记已保存, ID=" + mWorkingNote.getNoteId() + 
                  ", 锁定状态=" + mWorkingNote.isLocked() + 
                  ", 内容长度=" + mWorkingNote.getContent().length() + 
                  ", 密码哈希=[" + mWorkingNote.getPasswordHash() + "]");
                  
            // 添加：保存成功后尝试同步到数据表
            try {
                if (mWorkingNote.getNoteId() > 0) {
                    boolean syncResult = mWorkingNote.syncNote();
                    Log.d(TAG, "saveNote: 同步到数据表 - 结果=" + syncResult);
                }
            } catch (Exception e) {
                Log.e(TAG, "saveNote: 同步到数据表异常", e);
            }
        } else {
            Log.e(PASSWORD_TAG, "saveNote: 保存笔记失败, ID=" + 
                  (mWorkingNote != null ? mWorkingNote.getNoteId() : "无"));
        }
        return saved;
    }

    private void sendToDesktop() {
        /**
         * Before send message to home, we should make sure that current
         * editing note is exists in databases. So, for new note, firstly
         * save it
         */
        if (!mWorkingNote.existInDatabase()) {
            saveNote();
        }

        if (mWorkingNote.getNoteId() > 0) {
            Intent sender = new Intent();
            Intent shortcutIntent = new Intent(this, NoteEditActivity.class);
            shortcutIntent.setAction(Intent.ACTION_VIEW);
            shortcutIntent.putExtra(Intent.EXTRA_UID, mWorkingNote.getNoteId());
            sender.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
            sender.putExtra(Intent.EXTRA_SHORTCUT_NAME,
                    makeShortcutIconTitle(mWorkingNote.getContent()));
            sender.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE,
                    Intent.ShortcutIconResource.fromContext(this, R.drawable.icon_app));
            sender.putExtra("duplicate", true);
            sender.setAction("com.android.launcher.action.INSTALL_SHORTCUT");
            showToast(R.string.info_note_enter_desktop);
            sendBroadcast(sender);
        } else {
            /**
             * There is the condition that user has input nothing (the note is
             * not worthy saving), we have no note id, remind the user that he
             * should input something
             */
            Log.e(TAG, "Send to desktop error");
            showToast(R.string.error_note_empty_for_send_to_desktop);
        }
    }

    private String makeShortcutIconTitle(String content) {
        content = content.replace(TAG_CHECKED, "");
        content = content.replace(TAG_UNCHECKED, "");
        return content.length() > SHORTCUT_ICON_TITLE_MAX_LEN ? content.substring(0,
                SHORTCUT_ICON_TITLE_MAX_LEN) : content;
    }

    private void showToast(int resId) {
        showToast(resId, Toast.LENGTH_SHORT);
    }

    private void showToast(int resId, int duration) {
        Toast.makeText(this, resId, duration).show();
    }
    
    // 添加接受字符串参数的showToast方法
    private void showToast(String text) {
        Toast.makeText(this, text, Toast.LENGTH_SHORT).show();
    }

    /**
     * 更新锁定按钮的图标，根据笔记是否锁定
     */
    private void updateLockButtonIcon() {
        if (mWorkingNote != null) {
            boolean isLocked = mWorkingNote.isLocked();
            Log.d(PASSWORD_TAG, "updateLockButtonIcon: 更新锁定按钮, 笔记ID=" + mWorkingNote.getNoteId() + 
                  ", 锁定状态=" + isLocked + ", 验证状态=" + mPasswordVerified);
            
            if (isLocked) {
                mNoteHeaderHolder.ibEncrypt.setBackgroundResource(R.drawable.btn_decrypt_normal);
            } else {
                mNoteHeaderHolder.ibEncrypt.setBackgroundResource(R.drawable.btn_encrypt_normal);
            }
        }
    }
    
    /**
     * 计算字符串的SHA-256哈希值
     */
    private String hashPassword(String password) {
        try {
            MessageDigest digest = MessageDigest.getInstance("SHA-256");
            byte[] hash = digest.digest(password.getBytes());
            
            // 将字节数组转换为十六进制字符串
            StringBuilder hexString = new StringBuilder();
            for (byte b : hash) {
                String hex = Integer.toHexString(0xff & b);
                if (hex.length() == 1) hexString.append('0');
                hexString.append(hex);
            }
            return hexString.toString();
        } catch (NoSuchAlgorithmException e) {
            Log.e(TAG, "Hash algorithm not found", e);
            return "";
        }
    }
    
    /**
     * 显示锁定笔记对话框
     */
    private void showLockDialog() {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        View view = LayoutInflater.from(this).inflate(R.layout.dialog_password, null);
        final EditText passwordEdit = view.findViewById(R.id.password_edit);
        final EditText confirmPasswordEdit = view.findViewById(R.id.confirm_password_edit);
        
        builder.setTitle(R.string.dialog_set_password_title);
        builder.setMessage(R.string.dialog_set_password_message);
        builder.setView(view);
        builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                String password = passwordEdit.getText().toString();
                String confirmPassword = confirmPasswordEdit.getText().toString();
                
                if (password.isEmpty()) {
                    showToast(R.string.toast_password_empty);
                    return;
                }
                
                if (!password.equals(confirmPassword)) {
                    showToast(R.string.toast_password_not_match);
                    return;
                }
                
                // 设置锁定状态前记录信息
                Log.d(PASSWORD_TAG, "showLockDialog: 设置锁定状态前 - 笔记ID=" + mWorkingNote.getNoteId() + 
                      ", 当前锁定状态=" + mWorkingNote.isLocked());
                
                // 设置锁定状态
                String passwordHash = hashPassword(password);
                mWorkingNote.setLocked(true, passwordHash);
                
                // 保存笔记确保锁定状态被写入数据库
                saveNote();
                
                // 再次确认锁定状态已正确设置
                Log.d(PASSWORD_TAG, "showLockDialog: 设置锁定状态后 - 笔记ID=" + mWorkingNote.getNoteId() + 
                      ", 锁定状态=" + mWorkingNote.isLocked() + 
                      ", 密码哈希=[" + mWorkingNote.getPasswordHash() + "]");
                
                // 重要：强制保存笔记并重新加载，确保数据库状态一致
                forceRefreshNoteStatus();
                
                // 立即显示一个确认对话框
                AlertDialog.Builder confirmBuilder = new AlertDialog.Builder(NoteEditActivity.this);
                confirmBuilder.setTitle(R.string.toast_lock_success);
                confirmBuilder.setMessage("笔记已成功锁定，需要密码才能再次访问。");
                confirmBuilder.setPositiveButton(android.R.string.ok, null);
                confirmBuilder.show();
                
                // 更新UI
                updateLockButtonIcon();
            }
        });
        builder.setNegativeButton(android.R.string.cancel, null);
        builder.show();
    }
    
    /**
     * 显示解锁笔记对话框
     */
    private void showUnlockDialog() {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        View view = LayoutInflater.from(this).inflate(R.layout.dialog_password, null);
        final EditText passwordEdit = view.findViewById(R.id.password_edit);
        final EditText confirmPasswordEdit = view.findViewById(R.id.confirm_password_edit);
        confirmPasswordEdit.setVisibility(View.GONE);
        
        builder.setTitle(R.string.dialog_verify_password_title);
        builder.setMessage(R.string.dialog_verify_password_message);
        builder.setView(view);
        builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                String password = passwordEdit.getText().toString();
                
                if (password.isEmpty()) {
                    showToast(R.string.toast_password_empty);
                    return;
                }
                
                String passwordHash = hashPassword(password);
                if (passwordHash.equals(mWorkingNote.getPasswordHash())) {
                    // 解除锁定
                    mWorkingNote.setLocked(false, "");
                    saveNote();
                    updateLockButtonIcon();
                    showToast(R.string.toast_unlock_success);
                } else {
                    showToast(R.string.toast_password_incorrect);
                }
            }
        });
        builder.setNegativeButton(android.R.string.cancel, null);
        builder.show();
    }
    
    /**
     * 显示密码验证对话框
     */
    private void showPasswordDialog(final long noteId, final String expectedHash) {
        if (isFinishing()) {
            return;
        }

        // 记录当前正在验证的笔记ID
        final long verifyingNoteId = noteId;
        
        Log.d(PASSWORD_TAG, "showPasswordDialog: 显示密码验证对话框，笔记ID=" + noteId);

        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        View view = LayoutInflater.from(this).inflate(R.layout.dialog_password, null);
        final EditText passwordEdit = view.findViewById(R.id.password_edit);
        final EditText confirmPasswordEdit = view.findViewById(R.id.confirm_password_edit);
        confirmPasswordEdit.setVisibility(View.GONE);
        
        builder.setTitle(R.string.dialog_verify_password_title);
        builder.setMessage(R.string.dialog_verify_password_message);
        builder.setView(view);
        builder.setCancelable(false);
        builder.setPositiveButton(android.R.string.ok, null);
        builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Log.d(PASSWORD_TAG, "showPasswordDialog: 用户取消密码验证，退出编辑");
                finish(); // 取消就退出笔记编辑
            }
        });
        
        final AlertDialog dialog = builder.create();
        dialog.show();
        
        dialog.getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String password = passwordEdit.getText().toString();
                if (password.isEmpty()) {
                    showToast(R.string.toast_password_empty);
                    return;
                }
                
                // 确认操作的是同一个笔记
                if (verifyingNoteId != mWorkingNote.getNoteId()) {
                    Log.e(PASSWORD_TAG, "showPasswordDialog: 笔记ID不匹配: 期望=" + verifyingNoteId + ", 当前=" + mWorkingNote.getNoteId());
                    showToast(R.string.error_note_not_exist);
                    dialog.dismiss();
                    finish();
                    return;
                }
                
                // 验证密码
                String passwordHash = hashPassword(password);
                if (passwordHash.equals(expectedHash)) {
                    dialog.dismiss();
                    Log.d(PASSWORD_TAG, "showPasswordDialog: 密码验证成功，笔记ID=" + verifyingNoteId);
                    // 设置密码已验证
                    mPasswordVerified = true;
                    // 启用编辑功能
                    enableEditing();
                    showToast(R.string.toast_password_correct);
                } else {
                    Log.d(PASSWORD_TAG, "showPasswordDialog: 密码验证失败，笔记ID=" + verifyingNoteId);
                    showToast(R.string.toast_password_incorrect);
                    passwordEdit.setText("");
                    passwordEdit.requestFocus();
                }
            }
        });
    }
    
    /**
     * 锁定状态变化回调
     */
    @Override
    public void onLockStatusChanged(boolean isLocked) {
        Log.d(PASSWORD_TAG, "onLockStatusChanged: 锁定状态变化, isLocked=" + isLocked + 
              ", 笔记ID=" + (mWorkingNote != null ? mWorkingNote.getNoteId() : "无") +
              ", 密码哈希=[" + (mWorkingNote != null ? mWorkingNote.getPasswordHash() : "") + "]");
        
        // 确保锁定状态改变后，立即保存笔记
        if (mWorkingNote != null) {
            saveNote();
        }
        
        updateLockButtonIcon();
    }

    /**
     * 重新加载当前笔记，确保状态同步
     */
    private void reloadCurrentNote() {
        if (mWorkingNote != null && mWorkingNote.existInDatabase()) {
            long noteId = mWorkingNote.getNoteId();
            Log.d(PASSWORD_TAG, "reloadCurrentNote: 重新加载笔记, ID=" + noteId);
            
            // 重置状态
            mPasswordVerified = false;
            
            // 重新加载笔记
            mWorkingNote = WorkingNote.load(this, noteId);
            
            if (mWorkingNote == null) {
                Log.e(PASSWORD_TAG, "reloadCurrentNote: 加载笔记失败");
                finish();
                return;
            }
            
            // 设置监听器
            mWorkingNote.setOnSettingStatusChangedListener(this);
            
            // 更新屏幕显示
            initNoteScreen();
        }
    }

    /**
     * 强制刷新笔记状态，确保数据库同步
     */
    private void forceRefreshNoteStatus() {
        if (mWorkingNote != null && mWorkingNote.existInDatabase()) {
            long noteId = mWorkingNote.getNoteId();
            
            // 强制保存
            saveNote();
            
            // 重置验证状态
            mPasswordVerified = false;
            
            // 记录状态
            Log.d(PASSWORD_TAG, "forceRefreshNoteStatus: 强制刷新前 - 笔记ID=" + noteId + 
                  ", 锁定状态=" + mWorkingNote.isLocked() + 
                  ", 密码哈希=[" + mWorkingNote.getPasswordHash() + "]");
            
            // 重新加载笔记数据
            mWorkingNote = WorkingNote.load(this, noteId);
            if (mWorkingNote != null) {
                mWorkingNote.setOnSettingStatusChangedListener(this);
                
                // 记录刷新后的状态
                Log.d(PASSWORD_TAG, "forceRefreshNoteStatus: 强制刷新后 - 笔记ID=" + noteId + 
                      ", 锁定状态=" + mWorkingNote.isLocked() + 
                      ", 密码哈希=[" + mWorkingNote.getPasswordHash() + "]");
                
            } else {
                Log.e(PASSWORD_TAG, "forceRefreshNoteStatus: 刷新失败，无法加载笔记 ID=" + noteId);
            }
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        if (requestCode == REQUEST_RECORD_AUDIO_PERMISSION) {
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                // 权限获取成功，重新初始化语音识别
                if (mVoiceRecognizer != null) {
                    mVoiceRecognizer.destroy();
                    mVoiceRecognizer = null;
                }
                initVoiceRecognizer();
            } else {
                showToast("需要麦克风权限才能使用语音功能");
            }
        }
    }
}


