/*
Copyright 2012-2013, Polyvi Inc. (http://polyvi.github.io/openxface)
This program is distributed under the terms of the GNU General Public License.
This file is part of xFace.
xFace is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
xFace is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with xFace. If not, see <http://www.gnu.org/licenses/>.
*/
package com.polyvi.xface.ams;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import android.content.Context;
import android.content.SharedPreferences;
import com.polyvi.xface.app.XAppInfo;
import com.polyvi.xface.app.XApplication;
import com.polyvi.xface.app.XApplicationCreator;
import com.polyvi.xface.app.XIApplication;
import com.polyvi.xface.configXml.XAbstractAppConfigParser;
import com.polyvi.xface.configXml.XXmlOperatorFactory;
import com.polyvi.xface.core.XConfiguration;
import com.polyvi.xface.util.XConstant;
import com.polyvi.xface.util.XLog;
import com.polyvi.xface.util.XStringUtils;
import com.polyvi.xface.view.XAppWebView;
/**
* XAppList的装饰者，负责把应用信息添加、删除、更新到SharedPreferences
*/
public class XPersistentAppList extends XAppList {
private static final String CLASS_NAME = XPersistentAppList.class.getName();
/** 分隔符 */
private static final String DELIMITER = ",:,";
/** 所有应用的id，例如KEY:appsId VALUE:{app1,:,app2,:,app3} */
private static final String KEY_APPS_ID = "appsId";
/** 应用的源路径，例如KEY:app1 VALUE:{source_dirfile:///android_asset/data/app} */
private static final String TAG_SOURCE_DIR = "source_dir";
/** 保存应用信息的文件名称 */
private static final String APPS_FILE_NAME = "apps.pref";
private XAppList mAppList;
private SharedPreferences mPreference;
private XApplicationCreator mCreator;
public XPersistentAppList(Context ctx, XApplicationCreator creator,
XAppList appList) {
mCreator = creator;
mPreference = ctx.getSharedPreferences(APPS_FILE_NAME,
Context.MODE_WORLD_READABLE | Context.MODE_WORLD_WRITEABLE);
mAppList = appList;
// 读取所有的app到appList
readApps();
}
/**
* 读取所有的app到appList
*/
private void readApps() {
String appsId = mPreference.getString(KEY_APPS_ID, null);
if (null == appsId) {
XLog.i(CLASS_NAME, "No apps id in " + APPS_FILE_NAME);
return;
}
String[] appId = appsId.split(DELIMITER);
for (int index = 0; index < appId.length; index++) {
try {
XAppInfo appInfo = readAppInfo(appId, index);
if (null == appInfo) {
continue;
}
String appSourceDir = readSourceDir(appId[index]);
if (null != appSourceDir) {
appInfo.setSrcRoot(appSourceDir);
}
XIApplication app = mCreator.create(appInfo);
add(app);
} catch (FileNotFoundException e) {
XLog.w(CLASS_NAME, "Can't locate app.xml of app: " + appId[index]);
e.printStackTrace();
} catch (IOException e) {
XLog.w(CLASS_NAME, "IOException in read app.xml of app: "
+ appId[index]);
e.printStackTrace();
}
}
}
/**
* 读取app.xml文件，获取appInfo
* @param appId
* @param index
* @return
* @throws IOException, FileNotFoundException
*/
private XAppInfo readAppInfo(String[] appId, int index)
throws FileNotFoundException, IOException {
File appFile = new File(XConfiguration.getInstance()
.getAppInstallDir(), appId[index] + File.separator
+ XConstant.APP_CONFIG_FILE_NAME);
FileInputStream fis = new FileInputStream(appFile);
XAbstractAppConfigParser appConfigParser = XXmlOperatorFactory
.createAppConfigParser();
appConfigParser.setInput(fis);
XAppInfo appInfo = appConfigParser.parseConfig();
fis.close();
return appInfo;
}
/**
* 读取应用源码目录
*
* @param appId
* @return 应用源码目录
*/
private String readSourceDir(String appId) {
String appAttr = mPreference.getString(appId, null);
if (null == appAttr) {
XLog.e(CLASS_NAME, "Can't read " + appId + " in " + APPS_FILE_NAME);
return null;
}
return appAttr.split(TAG_SOURCE_DIR)[1];
}
@Override
public void add(XIApplication app) {
mAppList.add(app);
String appsId = mPreference.getString(KEY_APPS_ID, null);
String appId = app.getAppId();
if (null == appsId) {
appsId = appId;
} else {
//如果有重复的appid则不增加
if(contains(appId)) {
return;
}
appsId = appsId + DELIMITER + appId;
}
String appAttr = TAG_SOURCE_DIR + app.getAppInfo().getSrcRoot();
SharedPreferences.Editor editor = mPreference.edit();
editor.putString(KEY_APPS_ID, appsId);
editor.putString(app.getAppId(), appAttr);
editor.commit();
}
@Override
public XApplication getAppByViewId(int viewId) {
return mAppList.getAppByViewId(viewId);
}
@Override
public XIApplication getAppById(String appId) {
return mAppList.getAppById(appId);
}
@Override
public XAppWebView getAppViewById(int viewId) {
return mAppList.getAppViewById(viewId);
}
@Override
public String getAppIdByViewId(int viewId) {
return mAppList.getAppIdByViewId(viewId);
}
@Override
public int getTotalSize() {
return mAppList.getTotalSize();
}
@Override
public XIApplication getAppByIndex(int index) {
return mAppList.getAppByIndex(index);
}
@Override
public void removeAppById(String appId) {
mAppList.removeAppById(appId);
String appsId = mPreference.getString(KEY_APPS_ID, null);
if(null == appsId || !(contains(appId)) ) {
XLog.i(CLASS_NAME, "No appsId found in apps.pref");
return;
}
try {
String[] ids = appsId.split(DELIMITER);
List<String> appIdList = XStringUtils.strArrayToList(ids);
appIdList.remove(appId);
appsId = XStringUtils.join(DELIMITER, appIdList);
SharedPreferences.Editor editor = mPreference.edit();
editor.putString(KEY_APPS_ID, appsId);
editor.remove(appId);
editor.commit();
} catch(IllegalArgumentException e) {
XLog.e(CLASS_NAME, "Remove App By Id Error!");
e.printStackTrace();
}
}
@Override
public void updateApp(XAppInfo newAppInfo, XIApplication oldApp) {
mAppList.updateApp(newAppInfo, oldApp);
String appId = oldApp.getAppId();
String appsId = mPreference.getString(KEY_APPS_ID, null);
if (null == appsId) {
XLog.e(CLASS_NAME, "Update App Error: can't find KEY:"
+ KEY_APPS_ID + "in" + APPS_FILE_NAME);
return;
}
if (contains(appId)) {
String newSourceDir = newAppInfo.getSrcRoot();
String oldSourceDir = readSourceDir(appId);
if (oldSourceDir == null
&& newSourceDir != null
|| (oldSourceDir != null && newSourceDir != null && !oldSourceDir
.equals(newSourceDir))) {
SharedPreferences.Editor editor = mPreference.edit();
editor.remove(appId);
newSourceDir = TAG_SOURCE_DIR + newSourceDir;
editor.putString(appId, newSourceDir);
editor.commit();
}
} else {
XLog.e(CLASS_NAME, "Update App Error: can't find " + appId);
}
}
/**
* 判断传递的应用id是否在应用id列表中
*
* @param appId
* @return
*/
private boolean contains(String appId) {
if (null == appId) {
return false;
}
String appsId = mPreference.getString(KEY_APPS_ID, null);
if (null == appsId) {
return false;
}
String[] ids = appsId.split(DELIMITER);
for (int index = 0; index < ids.length; index++) {
if (ids[index].equals(appId)) {
return true;
}
}
return false;
}
@Override
public Iterator<XIApplication> iterator() {
return mAppList.iterator();
}
}