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package net.micode.notes.model;
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import android.appwidget.AppWidgetManager;
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import android.content.ContentUris;
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import android.content.Context;
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import android.database.Cursor;
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import android.text.TextUtils;
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import android.util.Log;
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import net.micode.notes.data.Notes;
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import net.micode.notes.data.Notes.CallNote;
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import net.micode.notes.data.Notes.DataColumns;
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import net.micode.notes.data.Notes.DataConstants;
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import net.micode.notes.data.Notes.NoteColumns;
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import net.micode.notes.data.Notes.TextNote;
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import net.micode.notes.tool.ResourceParser.NoteBgResources;
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public class WorkingNote {
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// Note for the working
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private Note mNote;
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// Note Id
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private long mNoteId;
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// Note content
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private String mContent;
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// Note mode
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private int mMode;
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private long mAlertDate;
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private long mModifiedDate;
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private int mBgColorId;
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private int mWidgetId;
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private int mWidgetType;
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private long mFolderId;
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private Context mContext;
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private static final String TAG = "WorkingNote";
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private boolean mIsDeleted;
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private NoteSettingChangedListener mNoteSettingStatusListener;
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public static final String[] DATA_PROJECTION = new String[] {
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DataColumns.ID,
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DataColumns.CONTENT,
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DataColumns.MIME_TYPE,
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DataColumns.DATA1,
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DataColumns.DATA2,
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DataColumns.DATA3,
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DataColumns.DATA4,
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};
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public static final String[] NOTE_PROJECTION = new String[] {
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NoteColumns.PARENT_ID,
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NoteColumns.ALERTED_DATE,
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NoteColumns.BG_COLOR_ID,
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NoteColumns.WIDGET_ID,
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NoteColumns.WIDGET_TYPE,
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NoteColumns.MODIFIED_DATE
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};
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private static final int DATA_ID_COLUMN = 0;
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private static final int DATA_CONTENT_COLUMN = 1;
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private static final int DATA_MIME_TYPE_COLUMN = 2;
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private static final int DATA_MODE_COLUMN = 3;
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private static final int NOTE_PARENT_ID_COLUMN = 0;
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private static final int NOTE_ALERTED_DATE_COLUMN = 1;
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private static final int NOTE_BG_COLOR_ID_COLUMN = 2;
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private static final int NOTE_WIDGET_ID_COLUMN = 3;
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private static final int NOTE_WIDGET_TYPE_COLUMN = 4;
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private static final int NOTE_MODIFIED_DATE_COLUMN = 5;
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// New note construct
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private WorkingNote(Context context, long folderId) {//定义了一个私有构造函数，接受context和long类型的folderid作为参数。
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mContext = context;//将传入的上下文赋值给类的成员变量mcontext
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mAlertDate = 0;//将提醒日期初始化为0，表示当前没有设置提醒。
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mModifiedDate = System.currentTimeMillis();//获取当前时间戳，并赋值给mmodifieddate，用于记录笔记的修改时间
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mFolderId = folderId;
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mNote = new Note();//创建一个类的实例并赋值
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mNoteId = 0;//初始化为零
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mIsDeleted = false;
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mMode = 0;
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mWidgetType = Notes.TYPE_WIDGET_INVALIDE;//将小部件类型设置为无效类型，表明当前笔记关联的小部件状态无效。
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}
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// Existing note construct
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private WorkingNote(Context context, long noteId, long folderId) {
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mContext = context;
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mNoteId = noteId;//明确初始化
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mFolderId = folderId;
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mIsDeleted = false;
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mNote = new Note();
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loadNote();//此时mnoteid已可用
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}
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private void loadNote() {//定义了一个私有的方法
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Cursor cursor = mContext.getContentResolver().query(
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ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, mNoteId), NOTE_PROJECTION, null,
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null, null);//定义好的表示笔记数据的内容URI，将mnoteid附加到该URI上，形成一个特定笔记的查询URI，都设null表示不指定额外条件和排序，查询结果会返回一个cursor对象，用于遍历查询得到的数据行
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if (cursor != null) {//判断查询结果
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if (cursor.moveToFirst()) {//将游标移动到查询结果集的第一行，若成功则进入这个if块执行后续操作
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mFolderId = cursor.getLong(NOTE_PARENT_ID_COLUMN);
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mBgColorId = cursor.getInt(NOTE_BG_COLOR_ID_COLUMN);
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mWidgetId = cursor.getInt(NOTE_WIDGET_ID_COLUMN);
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mWidgetType = cursor.getInt(NOTE_WIDGET_TYPE_COLUMN);
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mAlertDate = cursor.getLong(NOTE_ALERTED_DATE_COLUMN);
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mModifiedDate = cursor.getLong(NOTE_MODIFIED_DATE_COLUMN);//从查询结果的当前行中获取不同属性的值，并赋值给类的相应成员变量
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}
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cursor.close();
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} else {
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Log.e(TAG, "No note with id:" + mNoteId);
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throw new IllegalArgumentException("Unable to find note with id " + mNoteId);//若返回说明查询结果集为空，此时通过Log.e方法打印错误日志，然后抛出异常，提示找不到指定的ID笔记
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}
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loadNoteData();
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}
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private void loadNoteData() {//定义了一个私有方法
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Cursor cursor = mContext.getContentResolver().query(Notes.CONTENT_DATA_URI, DATA_PROJECTION,
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DataColumns.NOTE_ID + "=?", new String[] {
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String.valueOf(mNoteId)
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}, null);//表示数据所在的位置，指定要从查询结果中返回的列，查询NOTE-ID列等于某个值的记录，？会被后面的参数替换
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if (cursor != null) {//查询是否为空
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if (cursor.moveToFirst()) {
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do {
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String type = cursor.getString(DATA_MIME_TYPE_COLUMN);//从当前行获取数据的MIME类型，存储在type变量中
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if (DataConstants.NOTE.equals(type)) {
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mContent = cursor.getString(DATA_CONTENT_COLUMN);//获取笔记内容并赋值给mcontent
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mMode = cursor.getInt(DATA_MODE_COLUMN);//获取笔记内容并赋值
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mNote.setTextDataId(cursor.getLong(DATA_ID_COLUMN));//从当前行获取数据ID并设置到mnote对象中
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} else if (DataConstants.CALL_NOTE.equals(type)) {
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mNote.setCallDataId(cursor.getLong(DATA_ID_COLUMN));//判断如果是通话笔记类型，则获取数据ID并设置到mnote对象的数据ID属性中
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} else {
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Log.d(TAG, "Wrong note type with type:" + type);
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}
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} while (cursor.moveToNext());
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}
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cursor.close();
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} else {
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Log.e(TAG, "No data with id:" + mNoteId);
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throw new IllegalArgumentException("Unable to find note's data with id " + mNoteId);
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}
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}//若查询结果集为空，没有找到对性的mnoteid的数据，此时提示找不到指定的ID的笔记数据
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public static WorkingNote createEmptyNote(Context context, long folderId, int widgetId,
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int widgetType, int defaultBgColorId) {
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WorkingNote note = new WorkingNote(context, folderId);
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note.setBgColorId(defaultBgColorId);
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note.setWidgetId(widgetId);
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note.setWidgetType(widgetType);
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return note;
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}//创建一个空的workingnote对象分别调用三种方法，设置笔记的背景颜色ID,小部件ID和小部件类型
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public static WorkingNote load(Context context, long id) {
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return new WorkingNote(context, id, 0);
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}//接收context和id作为参数，直接通过调用对应的构造函数创建并返回一个working note对象，这三个参数含义需结合构造函数具体逻辑确定，推测可能是默认的文件夹id或其他默认标识
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public synchronized boolean saveNote() {
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if (isWorthSaving()) {
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if (!existInDatabase()) {
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if ((mNoteId = Note.getNewNoteId(mContext, mFolderId)) == 0) {
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Log.e(TAG, "Create new note fail with id:" + mNoteId);
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return false;
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}
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}
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mNote.syncNote(mContext, mNoteId);
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/**
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* Update widget content if there exist any widget of this note
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*/
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if (mWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID
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&& mWidgetType != Notes.TYPE_WIDGET_INVALIDE
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&& mNoteSettingStatusListener != null) {
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mNoteSettingStatusListener.onWidgetChanged();
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}
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return true;
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} else {
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return false;
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}//判断笔记是否值得保存，接着判断笔记是否已存在于数据库中，如果不存在，调用函数获取一个新的笔记ID，并赋值给mnoteid，若获取id为0，说明创建笔记id失败，之后并将笔记数据同步到数据库
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}
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public boolean existInDatabase() {
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return mNoteId > 0;
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}//判断成员变量mnotedid是否大于0来确定，大于0则认为存在于数据库，直接返回该判断结果
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private boolean isWorthSaving() {
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if (mIsDeleted || (!existInDatabase() && TextUtils.isEmpty(mContent))
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|| (existInDatabase() && !mNote.isLocalModified())) {
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return false;
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} else {
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return true;
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}
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}//通过多个条件组合判断，若满足任一条件则返回false，表示不值得保存
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public void setOnSettingStatusChangedListener(NoteSettingChangedListener l) {
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mNoteSettingStatusListener = l;
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}//接受一个类型的参数1，并将其赋值给成员变量，以便在相关设置状态改变时出发监听器的方法
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public void setAlertDate(long date, boolean set) {
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if (date != mAlertDate) {
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mAlertDate = date;
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mNote.setNoteValue(NoteColumns.ALERTED_DATE, String.valueOf(mAlertDate));
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}
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if (mNoteSettingStatusListener != null) {
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mNoteSettingStatusListener.onClockAlertChanged(date, set);
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}
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}//判断传入日期与当前记录的提醒日期是否不同，若不同，将提醒日期更新传入date，检查是否为空，若不为空调用其方法，通过监听器提醒日期已改变，并传入新日期和设置标识
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public void markDeleted(boolean mark) {
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mIsDeleted = mark;
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if (mWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID
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&& mWidgetType != Notes.TYPE_WIDGET_INVALIDE && mNoteSettingStatusListener != null) {
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mNoteSettingStatusListener.onWidgetChanged();
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}
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}//用于标识笔记是否已删除，并在满足特定条件时通知监听器
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public void setBgColorId(int id) {
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if (id != mBgColorId) {
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mBgColorId = id;
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if (mNoteSettingStatusListener != null) {
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mNoteSettingStatusListener.onBackgroundColorChanged();
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}
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mNote.setNoteValue(NoteColumns.BG_COLOR_ID, String.valueOf(id));
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}
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}//用于设置笔记的背景ID并在必要时通知监听器以及更新笔记数据
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public void setCheckListMode(int mode) {
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if (mMode != mode) {
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if (mNoteSettingStatusListener != null) {
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mNoteSettingStatusListener.onCheckListModeChanged(mMode, mode);
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}
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mMode = mode;
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mNote.setTextData(TextNote.MODE, String.valueOf(mMode));
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}
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}//用于设置笔记的清单模式，并在必要时通知监听器以及更新笔记数据
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public void setWidgetType(int type) {
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if (type != mWidgetType) {
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mWidgetType = type;
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mNote.setNoteValue(NoteColumns.WIDGET_TYPE, String.valueOf(mWidgetType));
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}
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}//用于设置笔记关联小部件的类型
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public void setWidgetId(int id) {
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if (id != mWidgetId) {
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mWidgetId = id;
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mNote.setNoteValue(NoteColumns.WIDGET_ID, String.valueOf(mWidgetId));
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}
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}//用于设置笔记关联小部件的ID
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public void setWorkingText(String text) {
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if (!TextUtils.equals(mContent, text)) {
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mContent = text;
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mNote.setTextData(DataColumns.CONTENT, mContent);
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}
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}//用于设置笔记的文本内容
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public void convertToCallNote(String phoneNumber, long callDate) {
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mNote.setCallData(CallNote.CALL_DATE, String.valueOf(callDate));
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mNote.setCallData(CallNote.PHONE_NUMBER, phoneNumber);
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mNote.setNoteValue(NoteColumns.PARENT_ID, String.valueOf(Notes.ID_CALL_RECORD_FOLDER));
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}//将当前笔记转换为通话笔记设置相关通话信息
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public boolean hasClockAlert() {
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return (mAlertDate > 0 ? true : false);
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}
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public String getContent() {
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return mContent;
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}
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public long getAlertDate() {
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return mAlertDate;
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}
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public long getModifiedDate() {
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return mModifiedDate;
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}
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public int getBgColorResId() {
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return NoteBgResources.getNoteBgResource(mBgColorId);
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}
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public int getBgColorId() {
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return mBgColorId;
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}
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public int getTitleBgResId() {
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return NoteBgResources.getNoteTitleBgResource(mBgColorId);
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}
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public int getCheckListMode() {
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return mMode;
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}
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public long getNoteId() {
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return mNoteId;
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}
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public long getFolderId() {
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return mFolderId;
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}
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public int getWidgetId() {
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return mWidgetId;
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}
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public int getWidgetType() {
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return mWidgetType;
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}
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public interface NoteSettingChangedListener {
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/**
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* Called when the background color of current note has just changed
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*/
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void onBackgroundColorChanged();
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/**
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* Called when user set clock
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*/
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void onClockAlertChanged(long date, boolean set);
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/**
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* Call when user create note from widget
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*/
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void onWidgetChanged();
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/**
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* Call when switch between check list mode and normal mode
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* @param oldMode is previous mode before change
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* @param newMode is new mode
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*/
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void onCheckListModeChanged(int oldMode, int newMode);
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}
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}
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