mirror of https://github.com/moparisthebest/k-9
138 lines
4.0 KiB
Java
138 lines
4.0 KiB
Java
package com.fsck.k9.helper;
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import com.fsck.k9.K9;
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import android.os.Build;
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import android.util.Log;
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/**
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* Helper class to get the current state of the auto-sync setting.
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*/
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public class AutoSyncHelper
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{
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/**
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* False, if we never tried to load the class for this SDK version.
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* True, otherwise.
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*
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* Note: if sAutoSync is null and sChecked is true, then an error occured
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* while loading the class for the SDK version we're running on.
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*/
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private static boolean sChecked = false;
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/**
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* Instance of the SDK specific class that implements the IAutoSync
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* interface.
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*/
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private static IAutoSync sAutoSync = null;
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/**
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* String for the auto-sync changed Intent. This isn't currently exposed by the API
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*/
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public static String SYNC_CONN_STATUS_CHANGE = "com.android.sync.SYNC_CONN_STATUS_CHANGED";
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/**
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* Try loading the class that implements IAutoSync for this SDK version.
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*
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* @return the IAutoSync object for this SDK version, or null if something
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* went wrong.
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*/
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private static IAutoSync loadAutoSync()
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{
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/*
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* We're trying to load the class for this SDK version. If anything
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* goes wrong after this point, we don't want to try again.
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*/
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sChecked = true;
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/*
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* Check the version of the SDK we are running on. Choose an
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* implementation class designed for that version of the SDK.
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*/
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int sdkVersion = Integer.parseInt(Build.VERSION.SDK);
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String className = null;
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if (sdkVersion == Build.VERSION_CODES.CUPCAKE)
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{
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className = "com.fsck.k9.helper.AutoSyncSdk3";
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}
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else if (sdkVersion == Build.VERSION_CODES.DONUT)
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{
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className = "com.fsck.k9.helper.AutoSyncSdk4";
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}
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else if (sdkVersion >= Build.VERSION_CODES.ECLAIR)
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{
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className = "com.fsck.k9.helper.AutoSyncSdk5";
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}
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/*
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* Find the required class by name and instantiate it.
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*/
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try
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{
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Class<? extends IAutoSync> clazz =
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Class.forName(className).asSubclass(IAutoSync.class);
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IAutoSync autoSync = clazz.newInstance();
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autoSync.initialize(K9.app);
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return autoSync;
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}
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catch (ClassNotFoundException e)
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{
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Log.e(K9.LOG_TAG, "Couldn't find class: " + className, e);
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}
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catch (InstantiationException e)
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{
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Log.e(K9.LOG_TAG, "Couldn't instantiate class: " + className, e);
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}
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catch (IllegalAccessException e)
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{
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Log.e(K9.LOG_TAG, "Couldn't access class: " + className, e);
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}
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catch (NoSuchMethodException e)
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{
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if (K9.DEBUG)
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{
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Log.d(K9.LOG_TAG, "Couldn't load method to get auto-sync state", e);
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}
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}
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return null;
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}
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/**
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* Checks whether we can query the auto-sync state using
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* getMasterSyncAutomatically() or not.
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*
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* @return true, if calls to getMasterSyncAutomatically() will return the
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* state of the auto-sync setting. false, otherwise.
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*/
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public static boolean isAvailable()
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{
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if (!sChecked)
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{
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sAutoSync = loadAutoSync();
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}
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return (sAutoSync != null);
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}
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/**
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* Query the state of the auto-sync setting.
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*
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* @return the state of the auto-sync setting.
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* @see IAutoSync
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*/
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public static boolean getMasterSyncAutomatically()
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{
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if (!sChecked)
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{
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sAutoSync = loadAutoSync();
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}
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if (sAutoSync == null)
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{
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throw new RuntimeException(
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"Called getMasterSyncAutomatically() before checking if it's available.");
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}
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return sAutoSync.getMasterSyncAutomatically();
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}
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}
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