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Code Issues Pull Requests 2 Projects Releases Wiki Activity

210340062刘瑞轩

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LiuRuiXuan 2 years ago
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doc/标注/210340062_刘瑞轩/NoteEditActivity.java
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/*
* 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.graphics.Paint;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.TextUtils;
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.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.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.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 ImageView ibSetBgColor;
}
private static final Map<Integer, Integer> sBgSelectorBtnsMap = new HashMap<Integer, Integer>();//将小米便签的背景颜色映射成一个个值
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>();//将映射的颜色在反射为小米便签对应颜色的一个值
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>();//将字体大小映射为一个值
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>();//将映射的值重新反射为字体大小对应的值
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);//执行父类的初始化操作
this.setContentView(R.layout.note_edit);//将布局文件node_edit加载到activity中，并设置为当前的试图
if (savedInstanceState == null && !initActivityState(getIntent())) {//初始化失败
finish();
return;
}
initResources();//进行资源的初始化和加载
}
/**
* 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) {//回复Activities的状态
super.onRestoreInstanceState(savedInstanceState);
if (savedInstanceState != null && savedInstanceState.containsKey(Intent.EXTRA_UID)) {//是否包含Intent.EXTRA_UID，如果包含则重新恢复
Intent intent = new Intent(Intent.ACTION_VIEW);//创建新的对象并显示出来
intent.putExtra(Intent.EXTRA_UID, savedInstanceState.getLong(Intent.EXTRA_UID));//把之前的数据加载到该intent上面来
if (!initActivityState(intent)) {//如果不存在
finish();
return;
}
Log.d(TAG, "Restoring from killed activity");//状态恢复成功
}
}
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);//获取intent所携带的附加参数
mUserQuery = "";
/**
* Starting from the searched result
*/
if (intent.hasExtra(SearchManager.EXTRA_DATA_KEY)) {//是否有额外的数据，有的话代表用户想要查看这一个便签
noteId = Long.parseLong(intent.getStringExtra(SearchManager.EXTRA_DATA_KEY));//取出来对应的id以便于之后数据库搜索
mUserQuery = intent.getStringExtra(SearchManager.USER_QUERY);//将mUserQuery设置为用户输入的查询的字符串
}
if (!DataUtils.visibleInNoteDatabase(getContentResolver(), noteId, Notes.TYPE_NOTE)) {//这个便签不能在数据库中找到
Intent jump = new Intent(this, NotesListActivity.class);//跳转到对应NoteListActivities上
startActivity(jump);//跳转
showToast(R.string.error_note_not_exist);//输出这个便签不存在
finish();//关闭页面
return false;
} else {
mWorkingNote = WorkingNote.load(this, noteId);//加载对应的便签
if (mWorkingNote == null) {//加载失败会记录当前的Activity
Log.e(TAG, "load note failed with note id" + noteId);//输出打开失败
finish();
return false;
}
}
getWindow().setSoftInputMode(//设置窗口为软件盘模式,窗口会自动调整布局大小以适应软键盘的显示或隐藏
WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN//此标志表示启动该 Activity 时软键盘不会自动弹出
| WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);//Activity 中的窗口大小会根据软键盘的状态自动调整
} else if(TextUtils.equals(Intent.ACTION_INSERT_OR_EDIT, intent.getAction())) {//如果是增添或者编辑
// New note
long folderId = intent.getLongExtra(Notes.INTENT_EXTRA_FOLDER_ID, 0);//获取FolderId
int widgetId = intent.getIntExtra(Notes.INTENT_EXTRA_WIDGET_ID,//获取传入的组件Id，如果没有找到对应的组件Id，那么就会返回无效的ID
AppWidgetManager.INVALID_APPWIDGET_ID);
int widgetType = intent.getIntExtra(Notes.INTENT_EXTRA_WIDGET_TYPE,//获取组件的类型
Notes.TYPE_WIDGET_INVALIDE);
int bgResId = intent.getIntExtra(Notes.INTENT_EXTRA_BACKGROUND_ID,//获取组件的背景Id，如果没有就默认的背景颜色
ResourceParser.getDefaultBgId(this));
// Parse call-record note
String phoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);//获取手机号码
long callDate = intent.getLongExtra(Notes.INTENT_EXTRA_CALL_DATE, 0);//获取通话时间
if (callDate != 0 && phoneNumber != null) {
if (TextUtils.isEmpty(phoneNumber)) {//如果没有该电话号
Log.w(TAG, "The call record number is null");
}
long noteId = 0;
if ((noteId = DataUtils.getNoteIdByPhoneNumberAndCallDate(getContentResolver(),
phoneNumber, callDate)) > 0) {//如果从数据库找到对应的电话号和日期号了那么就进行此操作
mWorkingNote = WorkingNote.load(this, noteId);//加载该便签
if (mWorkingNote == null) {//打开失败
Log.e(TAG, "load call note failed with note id" + noteId);
finish();
return false;
}
} else {//没有对应的日期或者没有对应的电话号码
mWorkingNote = WorkingNote.createEmptyNote(this, folderId, widgetId,
widgetType, bgResId);//新建立一个便签
mWorkingNote.convertToCallNote(phoneNumber, callDate);//转化为电话记录便签
}
} else {//如果有一者为空那么就代表是创建一个普通的便签
mWorkingNote = WorkingNote.createEmptyNote(this, folderId, widgetId, widgetType,
bgResId);
}
getWindow().setSoftInputMode(//也是软键盘形式
WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE
| WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
} else {
Log.e(TAG, "Intent not specified action, should not support");//不支持此类操作。
finish();
return false;
}
mWorkingNote.setOnSettingStatusChangedListener(this);//建立好之后进行监听，对更改或删除便签做相应的改变
return true;
}
@Override
protected void onResume() {//当由后台到前台的时候进行调用
super.onResume();
initNoteScreen();
}
private void initNoteScreen() {
mNoteEditor.setTextAppearance(this, TextAppearanceResources
.getTexAppearanceResource(mFontSizeId));//获取用户当前字体的大小
if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {//转化为清单模式
switchToListMode(mWorkingNote.getContent());//获取对应的内容
} else {//如果不是清单模式
mNoteEditor.setText(getHighlightQueryResult(mWorkingNote.getContent(), mUserQuery));//对用户输入的关键字文本进行高亮显示
mNoteEditor.setSelection(mNoteEditor.getText().length());//获取选取的长度
}
for (Integer id : sBgSelectorSelectionMap.keySet()) {
findViewById(sBgSelectorSelectionMap.get(id)).setVisibility(View.GONE);//找到当前键的值，也就是id，并隐藏背景选择器选中的背景图
}
mHeadViewPanel.setBackgroundResource(mWorkingNote.getTitleBgResId());//在头部显示标题
mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId());//在背景显示对应的背景颜色
mNoteHeaderHolder.tvModified.setText(DateUtils.formatDateTime(this,
mWorkingNote.getModifiedDate(), DateUtils.FORMAT_SHOW_DATE
| DateUtils.FORMAT_NUMERIC_DATE | DateUtils.FORMAT_SHOW_TIME
| DateUtils.FORMAT_SHOW_YEAR));//将修改时间文本视图中的数据写入标题
/**
* TODO: Add the menu for setting alert. Currently disable it because the DateTimePicker
* is not ready
*/
showAlertHeader();//决定是否显示提醒的表头
}
private void showAlertHeader() {
if (mWorkingNote.hasClockAlert()) {//如果有时间提醒
long time = System.currentTimeMillis();//获得当前的时间
if (time > mWorkingNote.getAlertDate()) {//如果超过时间提醒
mNoteHeaderHolder.tvAlertDate.setText(R.string.note_alert_expired);//设置提醒日期文本视图为过期显示内容
} else {
mNoteHeaderHolder.tvAlertDate.setText(DateUtils.getRelativeTimeSpanString(//显示距离提示还有多长时间
mWorkingNote.getAlertDate(), time, DateUtils.MINUTE_IN_MILLIS));
}
mNoteHeaderHolder.tvAlertDate.setVisibility(View.VISIBLE);//显示提醒日期
mNoteHeaderHolder.ivAlertIcon.setVisibility(View.VISIBLE);//显示提醒图标
} else {//没有时间提醒就隐藏对应的提醒标志
mNoteHeaderHolder.tvAlertDate.setVisibility(View.GONE);
mNoteHeaderHolder.ivAlertIcon.setVisibility(View.GONE);
};
}
@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()) {//如果数据库没有就进行保存
saveNote();
}
outState.putLong(Intent.EXTRA_UID, mWorkingNote.getNoteId());//初始化
Log.d(TAG, "Save working note id: " + mWorkingNote.getNoteId() + " onSaveInstanceState");//显示对应id信息和保存成功
}
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {//笔记编辑器的触摸事件
if (mNoteBgColorSelector.getVisibility() == View.VISIBLE
&& !inRangeOfView(mNoteBgColorSelector, ev)) {//如果不在背景颜色选择器的触摸范围之内，并且背景选择器是可视化的
mNoteBgColorSelector.setVisibility(View.GONE);//将背景选择器隐藏起来
return true;
}
if (mFontSizeSelector.getVisibility() == View.VISIBLE//判断字体大小选择器是否显示，并且是否在改变字体大小的控制范围内
&& !inRangeOfView(mFontSizeSelector, ev)) {
mFontSizeSelector.setVisibility(View.GONE);//将其隐藏起来
return true;
}
return super.dispatchTouchEvent(ev);
}
private boolean inRangeOfView(View view, MotionEvent ev) {
int []location = new int[2];//获取位置
view.getLocationOnScreen(location);//获取鼠标所在屏幕的左上角对应位置
int x = location[0];//横坐标
int y = location[1];//纵坐标
if (ev.getX() < x
|| ev.getX() > (x + view.getWidth())
|| ev.getY() < y
|| ev.getY() > (y + view.getHeight())) {
return false;
}//ev.getX获取了触摸事件的横坐标，getY则是获取纵坐标，该判断语句就是判断触摸事件的横纵坐标在该视图的外部
return true;//在管辖范畴内
}
private void initResources() {
mHeadViewPanel = findViewById(R.id.note_title);//获取对应id的视图
mNoteHeaderHolder = new HeadViewHolder();//实例化头部信息
mNoteHeaderHolder.tvModified = (TextView) findViewById(R.id.tv_modified_date);//把修改日期视图封装在mNoteHeaderHolder中
mNoteHeaderHolder.ivAlertIcon = (ImageView) findViewById(R.id.iv_alert_icon);//把提醒图标视图封装在对象中
mNoteHeaderHolder.tvAlertDate = (TextView) findViewById(R.id.tv_alert_date);//把提醒日期视图封装在对象中
mNoteHeaderHolder.ibSetBgColor = (ImageView) findViewById(R.id.btn_set_bg_color);//把改变背景颜色的视图封装在对象中
mNoteHeaderHolder.ibSetBgColor.setOnClickListener(this);//设置对应的监听器
mNoteEditor = (EditText) findViewById(R.id.note_edit_view);//找到对应的编辑器视图
mNoteEditorPanel = findViewById(R.id.sv_note_edit);//把保存便签的视图放在该对象中
mNoteBgColorSelector = findViewById(R.id.note_bg_color_selector);//将背景颜色选择器捆绑给mNoteBgColorSelector中
for (int id : sBgSelectorBtnsMap.keySet()) {//为每一种背景颜色对应的视图设置监听器
ImageView iv = (ImageView) findViewById(id);
iv.setOnClickListener(this);
}
mFontSizeSelector = findViewById(R.id.font_size_selector);//捆绑字体大小选择器
for (int id : sFontSizeBtnsMap.keySet()) {//为每一种字体大小设置监听器
View view = findViewById(id);
view.setOnClickListener(this);
};
mSharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);//获取默认的共享偏好
mFontSizeId = mSharedPrefs.getInt(PREFERENCE_FONT_SIZE, ResourceParser.BG_DEFAULT_FONT_SIZE);//设置字体大小
/**
* 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()) {//如果设置的字体大小的id超过了限制，那么就重新调回默认的字体大小
mFontSizeId = ResourceParser.BG_DEFAULT_FONT_SIZE;
}
mEditTextList = (LinearLayout) findViewById(R.id.note_edit_list);//线性放置
}
@Override
protected void onPause() {
super.onPause();
if(saveNote()) {
Log.d(TAG, "Note data was saved with length:" + mWorkingNote.getContent().length());
}//提示已保存对应文本
clearSettingState();
}
private void updateWidget() {//更新widget
Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
if (mWorkingNote.getWidgetType() == Notes.TYPE_WIDGET_2X) {//更新到2x大小
intent.setClass(this, NoteWidgetProvider_2x.class);
} else if (mWorkingNote.getWidgetType() == Notes.TYPE_WIDGET_4X) {//更新到4x大小
intent.setClass(this, NoteWidgetProvider_4x.class);
} else {
Log.e(TAG, "Unspported widget type");
return;
}
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, new int[] {//把对应id附加上去
mWorkingNote.getWidgetId()
});
sendBroadcast(intent);//让widget进行刷新操作，从而实现数据同步
setResult(RESULT_OK, intent);
}
public void onClick(View v) {
int id = v.getId();//获取id号
if (id == R.id.btn_set_bg_color) {//如果设置背景颜色
mNoteBgColorSelector.setVisibility(View.VISIBLE);//将改变颜色的视图显示出来
findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility(
View.VISIBLE);
} else if (sBgSelectorBtnsMap.containsKey(id)) {//如果是背景选择按钮包含此id
findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility(
View.GONE);//将选择视图关闭
mWorkingNote.setBgColorId(sBgSelectorBtnsMap.get(id));//设置对应的背景颜色
mNoteBgColorSelector.setVisibility(View.GONE);//
} else if (sFontSizeBtnsMap.containsKey(id)) {//点击的是某个字体大小的图标
findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.GONE);//将选择字体大小的视图关闭
mFontSizeId = sFontSizeBtnsMap.get(id);//将当前的字体大小设置为所选的大小
mSharedPrefs.edit().putInt(PREFERENCE_FONT_SIZE, mFontSizeId).commit();//共享字体大小偏好设置为对应的字体大小
findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.VISIBLE);//显示对应的字体
if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {//判断是否为检查模式
getWorkingText();//获取工作中的文本内容
switchToListMode(mWorkingNote.getContent());//转化为列表模式
} else {
mNoteEditor.setTextAppearance(this,
TextAppearanceResources.getTexAppearanceResource(mFontSizeId));//显示字体大小
}
mFontSizeSelector.setVisibility(View.GONE);//关闭字体大小显示
}
}
@Override
public void onBackPressed() {
if(clearSettingState()) {//关闭对应的窗口
return;
}
saveNote();//保存笔记
super.onBackPressed();
}
private boolean clearSettingState() {
if (mNoteBgColorSelector.getVisibility() == View.VISIBLE) {//判断背景颜色选择器是否可见
mNoteBgColorSelector.setVisibility(View.GONE);//关闭
return true;
} else if (mFontSizeSelector.getVisibility() == View.VISIBLE) {//判断字体大小是否可见
mFontSizeSelector.setVisibility(View.GONE);//关闭
return true;
}
return false;
}
public void onBackgroundColorChanged() {
findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility(
View.VISIBLE);//找到对应颜色的id并进行视图显示
mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId());//编辑面板进行显示
mHeadViewPanel.setBackgroundResource(mWorkingNote.getTitleBgResId());//试图面板显示
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
if (isFinishing()) {//页面完成
return true;
}
clearSettingState();//关闭设置的状态
menu.clear();//清空菜单
if (mWorkingNote.getFolderId() == Notes.ID_CALL_RECORD_FOLDER) {
getMenuInflater().inflate(R.menu.call_note_edit, menu);//进行菜单的填充
} 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);//切换为正常模式
} else {
menu.findItem(R.id.menu_list_mode).setTitle(R.string.menu_list_mode);
}
if (mWorkingNote.hasClockAlert()) {//显示是否有闹钟提示
menu.findItem(R.id.menu_alert).setVisible(false);//关闭提示
} else {
menu.findItem(R.id.menu_delete_remind).setVisible(false);//菜单删除提醒关闭
}
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {//根据选项的id号进行对应的选择
case R.id.menu_new_note:
createNewNote();//创建新的标签
break;
case R.id.menu_delete:
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle(getString(R.string.alert_title_delete));//提醒是否要删除
builder.setIcon(android.R.drawable.ic_dialog_alert);//设置删除的图标
builder.setMessage(getString(R.string.alert_message_delete_note));//提示要不要删除
builder.setPositiveButton(android.R.string.ok,
new DialogInterface.OnClickListener() {//确定按钮
public void onClick(DialogInterface dialog, int which) {
deleteCurrentNote();//删除当前的便签
finish();
}
});
builder.setNegativeButton(android.R.string.cancel, null);//不确定
builder.show();//继续展示对应界面
break;
case R.id.menu_font_size://字体大小菜单
mFontSizeSelector.setVisibility(View.VISIBLE);//显示字体选择器
findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.VISIBLE);//将字体大小选择器显示出来
break;
case R.id.menu_list_mode:
mWorkingNote.setCheckListMode(mWorkingNote.getCheckListMode() == 0 ?
TextNote.MODE_CHECK_LIST : 0);//设置列表模式
break;
case R.id.menu_share://进行菜单分享
getWorkingText();//获取便签的内容
sendTo(this, mWorkingNote.getContent());
break;
case R.id.menu_send_to_desktop:
sendToDesktop();//发送到桌面上
break;
case R.id.menu_alert:
setReminder();//设置提醒器
break;
case R.id.menu_delete_remind:
mWorkingNote.setAlertDate(0, false);//设置日期提醒器
break;
default:
break;
}
return true;
}
private void setReminder() {//设置提醒器
DateTimePickerDialog d = new DateTimePickerDialog(this, System.currentTimeMillis());//设置新的对话框
d.setOnDateTimeSetListener(new OnDateTimeSetListener() {//设置监听器
public void OnDateTimeSet(AlertDialog dialog, long date) {
mWorkingNote.setAlertDate(date , true);//设置信息
}
});
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);//代表发送一个文本信息
intent.putExtra(Intent.EXTRA_TEXT, info);//向intend中加入文本信息
intent.setType("text/plain");//文本类型
context.startActivity(intent);//启动这个intent，也就是发送信息
}
private void createNewNote() {
// Firstly, save current editing notes
saveNote();
// For safety, start a new NoteEditActivity
finish();
Intent intent = new Intent(this, NoteEditActivity.class);//新建一个intent
intent.setAction(Intent.ACTION_INSERT_OR_EDIT);//设置为编辑或者插入
intent.putExtra(Notes.INTENT_EXTRA_FOLDER_ID, mWorkingNote.getFolderId());//给id
startActivity(intent);//进行相应的编辑活动
}
private void deleteCurrentNote() {
if (mWorkingNote.existInDatabase()) {//如果对应的便签在数据库中能找到的话
HashSet<Long> ids = new HashSet<Long>();
long id = mWorkingNote.getNoteId();
if (id != Notes.ID_ROOT_FOLDER) {//如果不是无效值
ids.add(id);//加入
} else {
Log.d(TAG, "Wrong note id, should not happen");//不存在这样的便签id
}
if (!isSyncMode()) {//不是在同步模式下
if (!DataUtils.batchDeleteNotes(getContentResolver(), ids)) {//批量删除失败
Log.e(TAG, "Delete Note error");
}
} else {
if (!DataUtils.batchMoveToFolder(getContentResolver(), ids, Notes.ID_TRASH_FOLER)) {//无法移动到垃圾箱
Log.e(TAG, "Move notes to trash folder error, should not happens");
}
}
}
mWorkingNote.markDeleted(true);//标记为已经删除
}
private boolean isSyncMode() {
return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0;//获取账号名称，如果不是空则代表是同步模式下
}
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()) {//如果不在数据库中
saveNote();//保存
}
if (mWorkingNote.getNoteId() > 0) {//如果id为有效id
Intent intent = new Intent(this, AlarmReceiver.class);//新建intent
intent.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, mWorkingNote.getNoteId()));//设置对应的日期，和对应的信息
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0);//设置触发intent
AlarmManager alarmManager = ((AlarmManager) getSystemService(ALARM_SERVICE));//设置闹钟提醒
showAlertHeader();//显示提醒的标题
if(!set) {//如果要关闭提醒
alarmManager.cancel(pendingIntent);
} else {
alarmManager.set(AlarmManager.RTC_WAKEUP, date, pendingIntent);//设置提醒
}
} 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();//获取当前便签列表的孩子个数
if (childCount == 1) {//如果只有一个孩子
return;
}
for (int i = index + 1; i < childCount; i++) {
((NoteEditText) mEditTextList.getChildAt(i).findViewById(R.id.et_edit_text))
.setIndex(i - 1);//将index后的文本往前移动
}
mEditTextList.removeViewAt(index);//把对应下标的列表内容删除
NoteEditText edit = null;
if(index == 0) {//如果下标是0，那么就获取第一个标签
edit = (NoteEditText) mEditTextList.getChildAt(0).findViewById(
R.id.et_edit_text);
} else {//否则就是下标减一，因为删除了一个元素
edit = (NoteEditText) mEditTextList.getChildAt(index - 1).findViewById(
R.id.et_edit_text);
}
int length = edit.length();
edit.append(text);//把对应的文本内容加入
edit.requestFocus();//获取焦点
edit.setSelection(length);//设置光标到对应的长度
}
public void onEditTextEnter(int index, String text) {
/**
* Should not happen, check for debug
*/
if(index > mEditTextList.getChildCount()) {//如果输入的下标大于孩子的数量，越界访问
Log.e(TAG, "Index out of mEditTextList boundrary, should not happen");
}
View view = getListItem(text, index);//获取对应下标的列表物品的视图
mEditTextList.addView(view, index);//把对应下标的视图放到编辑文本的列表中
NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text);//
edit.requestFocus();//获取编辑文本的焦点
edit.setSelection(0);//设置光标到最开始的位置
for (int i = index + 1; i < mEditTextList.getChildCount(); i++) {//保证NoteEditText的索引值和列表元素的实际位置一致
((NoteEditText) mEditTextList.getChildAt(i).findViewById(R.id.et_edit_text))
.setIndex(i);
}
}
private void switchToListMode(String text) {
mEditTextList.removeAllViews();//关掉所有的视图
String[] items = text.split("\n");//将对应的文本据回车分开
int index = 0;
for (String item : items) {//遍历里面的元素
if(!TextUtils.isEmpty(item)) {//如果对应文本不是空
mEditTextList.addView(getListItem(item, index));//增加一个视图，并标上下标
index++;//到达下一个
}
}
mEditTextList.addView(getListItem("", index));//用于添加新的列表项目
mEditTextList.getChildAt(index).findViewById(R.id.et_edit_text).requestFocus();//请求焦点
mNoteEditor.setVisibility(View.GONE);//将便签编辑器取消
mEditTextList.setVisibility(View.VISIBLE);//将便文本列表显示出来
}
private Spannable getHighlightQueryResult(String fullText, String userQuery) {//将搜索到的关键字通过高亮显示出来
SpannableString spannable = new SpannableString(fullText == null ? "" : fullText);
if (!TextUtils.isEmpty(userQuery)) {//判断用户查询的内容是否为空
mPattern = Pattern.compile(userQuery);//将对应得文本转化为匹配模式
Matcher m = mPattern.matcher(fullText);//把对应得文本匹配出来
int start = 0;//定义开始
while (m.find(start)) {//到达下一个位置
spannable.setSpan(
new BackgroundColorSpan(this.getResources().getColor(
R.color.user_query_highlight)), m.start(), m.end(),
Spannable.SPAN_INCLUSIVE_EXCLUSIVE);//设置对应得高亮模式
start = m.end();//更新扫描得开始位置
}
}
return spannable;
}
private View getListItem(String item, int index) {
View view = LayoutInflater.from(this).inflate(R.layout.note_edit_list_item, null);//获取布局解析器对象
final NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text);//找到对应id得控件对象
edit.setTextAppearance(this, TextAppearanceResources.getTexAppearanceResource(mFontSizeId));//设置文本形式
CheckBox cb = ((CheckBox) view.findViewById(R.id.cb_edit_item));//根据id找到对应的多选框
cb.setOnCheckedChangeListener(new OnCheckedChangeListener() {//监听复选框的变化
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {//勾选了对应的复选框
edit.setPaintFlags(edit.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);//加上对应的删除线
} else {//取消了勾选
edit.setPaintFlags(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG);//删除对应的删除线
}
}
});
if (item.startsWith(TAG_CHECKED)) {//如果该列表项已经被勾选了
cb.setChecked(true);//设置为选中状态
edit.setPaintFlags(edit.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);//
item = item.substring(TAG_CHECKED.length(), item.length()).trim();//修剪掉对应的空格
} else if (item.startsWith(TAG_UNCHECKED)) {
cb.setChecked(false);
edit.setPaintFlags(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG);//未勾选状态
item = item.substring(TAG_UNCHECKED.length(), item.length()).trim();//去除TAG_UNCHECKED前缀
}
edit.setOnTextViewChangeListener(this);//给当前事件捆绑监听器
edit.setIndex(index);
edit.setText(getHighlightQueryResult(item, mUserQuery));//对用户的查询显示高亮
return view;
}
public void onTextChange(int index, boolean hasText) {
if (index >= mEditTextList.getChildCount()) {//看坐标是否大于子控件数目如果大于，是无效操作
Log.e(TAG, "Wrong index, should not happen");
return;
}
if(hasText) {//决定左侧检查框是否显示，如果是有文本的，获取对应位置的子控件
mEditTextList.getChildAt(index).findViewById(R.id.cb_edit_item).setVisibility(View.VISIBLE);//将对应的多选框筛查出来
} 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) {//如果是在检查列表模式下
switchToListMode(mNoteEditor.getText().toString());//转化为列表模式
} 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() {//根据文本内容和勾选状态生成字符串，统计用户的输入状态
boolean hasChecked = false;
if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {//如果是勾选列表模式
StringBuilder sb = new StringBuilder();
for (int i = 0; i < mEditTextList.getChildCount(); i++) {
View view = mEditTextList.getChildAt(i);//获取对应构件
NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text);
if (!TextUtils.isEmpty(edit.getText())) {//获取输入框的内容
if (((CheckBox) view.findViewById(R.id.cb_edit_item)).isChecked()) {//如果当前的遍历的多选框被勾选了
sb.append(TAG_CHECKED).append(" ").append(edit.getText()).append("\n");//将该信息加入到sb中
hasChecked = true;
} else {
sb.append(TAG_UNCHECKED).append(" ").append(edit.getText()).append("\n");//没有勾选
}
}
}
mWorkingNote.setWorkingText(sb.toString());//将其转化为String类
} else {
mWorkingNote.setWorkingText(mNoteEditor.getText().toString());//设置文本内容
}
return hasChecked;//存在勾选的选项
}
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);//表示点击桌面快捷方式需要启动的activity
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()));//表示快捷方式的名字
sender.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE,
Intent.ShortcutIconResource.fromContext(this, R.drawable.icon_app));//快捷方式的图标
sender.putExtra("duplicate", true);
sender.setAction("com.android.launcher.action.INSTALL_SHORTCUT");//拟定发送的广播类型
showToast(R.string.info_note_enter_desktop);
sendBroadcast(sender);//创建对应的快捷方式
} else {//对应的便签不存在
/**
* 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, "");//去掉对应的标记
content = content.replace(TAG_UNCHECKED, "");
return content.length() > SHORTCUT_ICON_TITLE_MAX_LEN ? content.substring(0,
SHORTCUT_ICON_TITLE_MAX_LEN) : content;//将便签前几个字作为标题
}
private void showToast(int resId) {
showToast(resId, Toast.LENGTH_SHORT);
}//显示提示信息
private void showToast(int resId, int duration) {
Toast.makeText(this, resId, duration).show();//在指定时间内显示对应的信息
}
}
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