NoteEditActivity.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.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.ContentResolver;
    import android.content.ContentUris;
    import android.content.ContentValues;
    import android.content.Context;
    import android.content.DialogInterface;
    import android.content.Intent;
    import android.content.SharedPreferences;
    import android.database.Cursor;
    import android.graphics.Bitmap;
    import android.graphics.BitmapFactory;
    import android.graphics.Paint;
    import android.net.Uri;
    import android.os.Bundle;
    import android.preference.PreferenceManager;
    import android.provider.DocumentsContract;
    import android.provider.MediaStore;
    import android.text.Editable;
    import android.text.Spannable;
    import android.text.SpannableString;
    import android.text.TextUtils;
    import android.text.format.DateUtils;
    import android.text.style.BackgroundColorSpan;
    import android.text.style.ImageSpan;
    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.WindowManager;
    import android.widget.CheckBox;
    import android.widget.CompoundButton;
    import android.widget.CompoundButton.OnCheckedChangeListener;
    import android.widget.EditText;
    import android.widget.ImageButton;
    import android.widget.ImageView;
    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.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.io.FileNotFoundException;
    import java.util.HashMap;
    import java.util.HashSet;
    import java.util.Map;
    import java.util.regex.Matcher;
    import java.util.regex.Pattern;
    //import android.os.Build;
    //import Build.VERSION_CODES;

    public class NoteEditActivity extends Activity implements OnClickListener,
            NoteSettingChangedListener, OnTextViewChangeListener {
        private Notes.NoteColumns Build;

        private class HeadViewHolder {
            public TextView tvModified;

            public ImageView ivAlertIcon;

            public TextView tvAlertDate;

            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;

       // @Override
    //    protected void onCreate(Bundle savedInstanceState) {
    //        super.onCreate(savedInstanceState);
    //        this.setContentView(R.layout.note_edit);
    //
    //        if (savedInstanceState == null && !initActivityState(getIntent())) {
    //            finish();
    //            return;
    //        }
    //        initResources();
    //    }
       private final int PHOTO_REQUEST=1;

        @Override

        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            this.setContentView(R.layout.note_edit);

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

            //根据id获取添加图片按钮
            final ImageButton add_img_btn = (ImageButton) findViewById(R.id.add_img_btn);
            //为点击图片按钮设置监听器
            add_img_btn.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    Log.d(TAG, "onClick: click add image button");
                    //ACTION_GET_CONTENT: 允许用户选择特殊种类的数据，并返回（特殊种类的数据：照一张相片或录一段音）
                    Intent loadImage = new Intent(Intent.ACTION_GET_CONTENT);
                    //Category属性用于指定当前动作（Action）被执行的环境.
                    //CATEGORY_OPENABLE; 用来指示一个ACTION_GET_CONTENT的intent
                    loadImage.addCategory(Intent.CATEGORY_OPENABLE);
                    loadImage.setType("image/*");
                    startActivityForResult(loadImage, PHOTO_REQUEST);
                }
            });
        }

        /**
         * 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;
            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;
                    }
                }
                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);
                }

                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();
            initNoteScreen();
        }

        private void initNoteScreen() {
            mNoteEditor.setTextAppearance(this, TextAppearanceResources
                    .getTexAppearanceResource(mFontSizeId));
            if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
                switchToListMode(mWorkingNote.getContent());
            } else {
                mNoteEditor.setText(getHighlightQueryResult(mWorkingNote.getContent(), mUserQuery));
                mNoteEditor.setSelection(mNoteEditor.getText().length());
            }
            for (Integer id : sBgSelectorSelectionMap.keySet()) {
                findViewById(sBgSelectorSelectionMap.get(id)).setVisibility(View.GONE);
            }
            mHeadViewPanel.setBackgroundResource(mWorkingNote.getTitleBgResId());
            mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId());

            mNoteHeaderHolder.tvModified.setText(DateUtils.formatDateTime(this,
                    mWorkingNote.getModifiedDate(), DateUtils.FORMAT_SHOW_DATE
                            | DateUtils.FORMAT_NUMERIC_DATE | DateUtils.FORMAT_SHOW_TIME
                            | DateUtils.FORMAT_SHOW_YEAR));

            /**
             * TODO: Add the menu for setting alert. Currently disable it because the DateTimePicker
             * is not ready
             */
            showAlertHeader();

            convertToImage();
        }

        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);
            };
        }

        private void convertToImage() {
            NoteEditText noteEditText = (NoteEditText) findViewById(R.id.note_edit_view); //获取当前的edit

            Editable editable = noteEditText.getText();//1.获取text
            String noteText = editable.toString(); //2.将note内容转换为字符串
            int length = editable.length(); //内容的长度
            //3.截取img片段 [local]+uri+[local]，提取uri
            for(int i = 0; i < length; i++) {
                for(int j = i; j < length; j++) {
                    String img_fragment = noteText.substring(i, j+1); //img_fragment：关于图片路径的片段
                    if(img_fragment.length() > 15 && img_fragment.endsWith("[/local]") && img_fragment.startsWith("[local]")){
                        int limit = 7;  //[local]为7个字符
                        //[local][/local]共15个字符，剩下的为真正的path长度
                        int len = img_fragment.length()-15;
                        //从[local]之后的len个字符就是path
                        String path = img_fragment.substring(limit,limit+len);//获取到了图片路径
                        Bitmap bitmap = null;
                        Log.d(TAG, "图片的路径是："+path);
                        try {
                            bitmap = BitmapFactory.decodeFile(path);//将图片路径解码为图片格式
                        } catch (Exception e) {
                            e.printStackTrace();
                        }
                        if(bitmap!=null){  //若图片存在
                            Log.d(TAG, "图片不为null");
                            ImageSpan imageSpan = new ImageSpan(NoteEditActivity.this, bitmap);
                            //4.创建一个SpannableString对象，以便插入用ImageSpan对象封装的图像
                            String ss = "[local]" + path + "[/local]";
                            SpannableString spannableString = new SpannableString(ss);
                            //5.将指定的标记对象附加到文本的开始...结束范围
                            spannableString.setSpan(imageSpan, 0, ss.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                            Log.d(TAG, "Create spannable string success!");
                            Editable edit_text = noteEditText.getEditableText();
                            edit_text.delete(i,i+len+15); //6.删掉图片路径的文字
                            edit_text.insert(i, spannableString); //7.在路径的起始位置插入图片
                        }
                    }
                }
            }
        }

        @Override
        protected void onNewIntent(Intent intent) {
            super.onNewIntent(intent);
            initActivityState(intent);
        }

        @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.ibSetBgColor = (ImageView) findViewById(R.id.btn_set_bg_color);
            mNoteHeaderHolder.ibSetBgColor.setOnClickListener(this);
            mNoteEditor = (EditText) findViewById(R.id.note_edit_view);
            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);
        }

        @Override
        protected void onPause() {
            super.onPause();
            if(saveNote()) {
                Log.d(TAG, "Note data was saved with length:" + mWorkingNote.getContent().length());
            }
            clearSettingState();
        }

        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 (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();

            // 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, PendingIntent.FLAG_IMMUTABLE);
                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);

                convertToImage();
            }
        }

        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() {
            getWorkingText();
            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);
            }
            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();
        }

        //获取文件的real path
        public String getPath(final Context context, final Uri uri) {

    //        final boolean isKitKat;
    //        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) isKitKat = true;
    //        else isKitKat = false;
            final boolean isKitKat = android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT;
            // DocumentProvider
            if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
                // ExternalStorageProvider
    //            if (isExternalStorageDocument(uri)) {
    //                final String docId = DocumentsContract.getDocumentId(uri);
    //                final String[] split = docId.split(":");
    //                final String type = split[0];
    //
    //                if ("primary".equalsIgnoreCase(type)) {
    //                    return Environment.getExternalStorageDirectory() + "/" + split[1];
    //                }
    //            }
    //            // DownloadsProvider
    //            else if (isDownloadsDocument(uri)) {
    //                final String id = DocumentsContract.getDocumentId(uri);
    //                final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
    //                return getDataColumn(context, contentUri, null, null);
    //            }
                // MediaProvider
    //            else
                if (isMediaDocument(uri)) {
                    final String docId = DocumentsContract.getDocumentId(uri);
                    final String[] split = docId.split(":");
                    final String type = split[0];

                    Uri contentUri = null;
                    if ("image".equals(type)) {
                        contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
                    }

                    final String selection = "_id=?";
                    final String[] selectionArgs = new String[]{split[1]};

                    return getDataColumn(context, contentUri, selection, selectionArgs);
                }
            }
            // Media
            else if ("content".equalsIgnoreCase(uri.getScheme())) {
                return getDataColumn(context, uri, null, null);
            }
            // File
            else if ("file".equalsIgnoreCase(uri.getScheme())) {
                return uri.getPath();
            }
            return null;
        }

        //获取数据列_获取此 Uri 的数据列的值。这对MediaStore Uris 和其他基于文件的 ContentProvider。
        public String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {

            Cursor cursor = null;
            final String column = "_data";
            final String[] projection = {column};

            try {
                cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
                if (cursor != null && cursor.moveToFirst()) {
                    final int column_index = cursor.getColumnIndexOrThrow(column);
                    return cursor.getString(column_index);
                }
            } finally {
                if (cursor != null)
                    cursor.close();
            }
            return null;
        }

        //是否为外部存储文件
    //    public boolean isExternalStorageDocument(Uri uri) {
    //        return "com.android.externalstorage.documents".equals(uri.getAuthority());
    //    }
    //
    //    //是否为下载文件
    //    public boolean isDownloadsDocument(Uri uri) {
    //        return "com.android.providers.downloads.documents".equals(uri.getAuthority());
    //    }

        //是否为媒体文件
        public boolean isMediaDocument(Uri uri) {
            return "com.android.providers.media.documents".equals(uri.getAuthority());
        }

        protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
            super.onActivityResult(requestCode, resultCode, intent);
            ContentResolver resolver = getContentResolver();
            switch (requestCode) {
                case PHOTO_REQUEST:
                    Uri originalUri = intent.getData(); //1.获得图片的真实路径
                    Bitmap bitmap = null;
                    try {
                        bitmap = BitmapFactory.decodeStream(resolver.openInputStream(originalUri));//2.解码图片
                    } catch (FileNotFoundException e) {
                        Log.d(TAG, "onActivityResult: get file_exception");
                        e.printStackTrace();
                    }

                    if (bitmap != null) {
                        //3.根据Bitmap对象创建ImageSpan对象
                        Log.d(TAG, "onActivityResult: bitmap is not null");
                        ImageSpan imageSpan = new ImageSpan(NoteEditActivity.this, bitmap);
                        String path = getPath(this, originalUri);
                        //4.使用[local][/local]将path括起来，用于之后方便识别图片路径在note中的位置
                        String img_fragment = "[local]" + path + "[/local]";
                        //创建一个SpannableString对象，以便插入用ImageSpan对象封装的图像
                        SpannableString spannableString = new SpannableString(img_fragment);
                        spannableString.setSpan(imageSpan, 0, img_fragment.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                        //5.将选择的图片追加到EditText中光标所在位置
                        NoteEditText e = (NoteEditText) findViewById(R.id.note_edit_view);
                        int index = e.getSelectionStart(); //获取光标所在位置
                        Log.d(TAG, "Index是: " + index);
                        Editable edit_text = e.getEditableText();
                        edit_text.insert(index, spannableString); //将图片插入到光标所在位置

                        mWorkingNote.mContent = e.getText().toString();
                        //6.把改动提交到数据库中,两个数据库表都要改的
                        ContentResolver contentResolver = getContentResolver();
                        ContentValues contentValues = new ContentValues();
                        final long id = mWorkingNote.getNoteId();
                        contentValues.put("snippet", mWorkingNote.mContent);
                        contentResolver.update(Uri.parse("content://micode_notes/note"), contentValues, "_id=?", new String[]{"" + id});
                        ContentValues contentValues1 = new ContentValues();
                        contentValues1.put("content", mWorkingNote.mContent);
                        contentResolver.update(Uri.parse("content://micode_notes/data"), contentValues1, "mime_type=? and note_id=?", new String[]{"vnd.android.cursor.item/text_note", "" + id});

                    } else {
                        Toast.makeText(NoteEditActivity.this, "获取图片失败", Toast.LENGTH_SHORT).show();
                    }
                    break;
                default:
                    break;
            }
        }
        //
    }