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package org.sufficientlysecure.keychain.ui.base;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.Bundle;
import android.os.Message;
import android.os.Messenger;
import android.os.Parcelable;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.operations.results.OperationResult;
import org.sufficientlysecure.keychain.service.KeychainNewService;
import org.sufficientlysecure.keychain.service.KeychainService;
import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
public abstract class CachingCryptoOperationFragment <T extends Parcelable, S extends OperationResult>
extends CryptoOperationFragment<T, S> {
public static final String ARG_CACHED_ACTIONS = "cached_actions";
private T mCachedActionsParcel;
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putParcelable(ARG_CACHED_ACTIONS, mCachedActionsParcel);
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (savedInstanceState != null) {
mCachedActionsParcel = savedInstanceState.getParcelable(ARG_CACHED_ACTIONS);
}
}
@Override
protected void onCryptoOperationResult(S result) {
super.onCryptoOperationResult(result);
mCachedActionsParcel = null;
}
protected abstract T createOperationInput();
protected void cryptoOperation(CryptoInputParcel cryptoInput) {
if (mCachedActionsParcel == null) {
mCachedActionsParcel = createOperationInput();
// this is null if invalid, just return in that case
if (mCachedActionsParcel == null) {
// Notify was created by createCryptoInput.
return;
}
}
// Send all information needed to service to edit key in other thread
Intent intent = new Intent(getActivity(), KeychainNewService.class);
intent.putExtra(KeychainNewService.EXTRA_OPERATION_INPUT, mCachedActionsParcel);
intent.putExtra(KeychainNewService.EXTRA_CRYPTO_INPUT, cryptoInput);
ServiceProgressHandler saveHandler = new ServiceProgressHandler(getActivity()) {
@Override
public void handleMessage(Message message) {
// handle messages by standard KeychainIntentServiceHandler first
super.handleMessage(message);
if (message.arg1 == MessageStatus.OKAY.ordinal()) {
// get returned data bundle
Bundle returnData = message.getData();
if (returnData == null) {
return;
}
final OperationResult result =
returnData.getParcelable(OperationResult.EXTRA_RESULT);
onHandleResult(result);
}
}
};
// Create a new Messenger for the communication back
Messenger messenger = new Messenger(saveHandler);
intent.putExtra(KeychainService.EXTRA_MESSENGER, messenger);
saveHandler.showProgressDialog(
getString(R.string.progress_building_key),
ProgressDialog.STYLE_HORIZONTAL, false);
getActivity().startService(intent);
}
protected T getCachedActionsParcel() {
return mCachedActionsParcel;
}
protected void cacheActionsParcel(T cachedActionsParcel) {
mCachedActionsParcel = cachedActionsParcel;
}
protected void onCryptoOperationCancelled() {
mCachedActionsParcel = null;
}
}
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