431 lines
15 KiB
Java
431 lines
15 KiB
Java
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.email.activity;
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import com.android.email.Account;
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import com.android.email.Email;
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import com.android.email.LegacyConversions;
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import com.android.email.Preferences;
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import com.android.email.R;
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import com.android.email.mail.Folder;
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import com.android.email.mail.MessagingException;
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import com.android.email.mail.Store;
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import com.android.email.mail.store.LocalStore;
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import com.android.email.provider.EmailContent;
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import com.android.email.provider.EmailContent.AccountColumns;
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import android.app.Activity;
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import android.app.ListActivity;
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import android.content.Context;
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import android.content.Intent;
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import android.os.AsyncTask;
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import android.os.Bundle;
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import android.os.Handler;
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import android.util.Log;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.view.View.OnClickListener;
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import android.widget.BaseAdapter;
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import android.widget.Button;
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import android.widget.ListView;
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import android.widget.ProgressBar;
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import android.widget.TextView;
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/**
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* This activity will be used whenever we have a large/slow bulk upgrade operation.
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*
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* Note: It's preferable to check for "accounts needing upgrade" before launching this
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* activity, so as to not waste time before every launch.
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*
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* TODO: Disable orientation changes, to keep the activity from restarting on rotation. This is
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* set in the manifest but for some reason it's not working.
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* TODO: More work on actual conversions
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*/
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public class UpgradeAccounts extends ListActivity implements OnClickListener {
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private AccountInfo[] mLegacyAccounts;
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private UIHandler mHandler = new UIHandler();
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private AccountsAdapter mAdapter;
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private ListView mListView;
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private Button mProceedButton;
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private ConversionTask mConversionTask;
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/** This projection is for looking up accounts by their legacy UUID */
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private static final String WHERE_ACCOUNT_UUID_IS = AccountColumns.COMPATIBILITY_UUID + "=?";
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public static void actionStart(Activity fromActivity) {
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Intent i = new Intent(fromActivity, UpgradeAccounts.class);
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fromActivity.startActivity(i);
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}
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@Override
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public void onCreate(Bundle icicle) {
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super.onCreate(icicle);
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Preferences p = Preferences.getPreferences(this);
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loadAccountInfoArray(p.getAccounts());
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Log.d(Email.LOG_TAG, "*** Preparing to upgrade " +
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Integer.toString(mLegacyAccounts.length) + " accounts");
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setContentView(R.layout.upgrade_accounts);
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mListView = getListView();
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mProceedButton = (Button) findViewById(R.id.action_button);
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mProceedButton.setEnabled(false);
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mProceedButton.setOnClickListener(this);
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}
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@Override
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protected void onResume() {
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super.onResume();
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updateList();
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// Start the big conversion engine
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mConversionTask = new ConversionTask(mLegacyAccounts);
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mConversionTask.execute();
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}
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@Override
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protected void onDestroy() {
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super.onDestroy();
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if (mConversionTask != null &&
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mConversionTask.getStatus() != ConversionTask.Status.FINISHED) {
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mConversionTask.cancel(true);
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mConversionTask = null;
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}
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}
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public void onClick(View v) {
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switch (v.getId()) {
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case R.id.action_button:
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onClickOk();
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break;
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}
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}
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private void onClickOk() {
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Welcome.actionStart(UpgradeAccounts.this);
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finish();
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}
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private void updateList() {
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mAdapter = new AccountsAdapter();
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getListView().setAdapter(mAdapter);
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}
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private static class AccountInfo {
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Account account;
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int maxProgress;
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int progress;
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String error;
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}
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private void loadAccountInfoArray(Account[] legacyAccounts) {
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mLegacyAccounts = new AccountInfo[legacyAccounts.length];
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for (int i = 0; i < legacyAccounts.length; i++) {
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AccountInfo ai = new AccountInfo();
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ai.account = legacyAccounts[i];
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ai.maxProgress = 0;
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ai.progress = 0;
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ai.error = null;
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mLegacyAccounts[i] = ai;
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}
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}
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private static class ViewHolder {
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TextView displayName;
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ProgressBar progress;
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TextView errorReport;
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}
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class AccountsAdapter extends BaseAdapter {
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final LayoutInflater mInflater;
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AccountsAdapter() {
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mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
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}
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@Override
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public boolean hasStableIds() {
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return true;
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}
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public int getCount() {
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return mLegacyAccounts.length;
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}
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public Object getItem(int position) {
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return mLegacyAccounts[position];
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}
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public long getItemId(int position) {
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return position;
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}
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public View getView(int position, View convertView, ViewGroup parent) {
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View v;
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if (convertView == null) {
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v = newView(parent);
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} else {
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v = convertView;
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}
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bindView(v, position);
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return v;
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}
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public View newView(ViewGroup parent) {
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View v = mInflater.inflate(R.layout.upgrade_accounts_item, parent, false);
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ViewHolder h = new ViewHolder();
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h.displayName = (TextView) v.findViewById(R.id.name);
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h.progress = (ProgressBar) v.findViewById(R.id.progress);
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h.errorReport = (TextView) v.findViewById(R.id.error);
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v.setTag(h);
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return v;
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}
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public void bindView(View view, int position) {
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ViewHolder vh = (ViewHolder) view.getTag();
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AccountInfo ai = mLegacyAccounts[position];
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vh.displayName.setText(ai.account.getDescription());
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if (ai.error == null) {
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vh.errorReport.setVisibility(View.GONE);
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vh.progress.setVisibility(View.VISIBLE);
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vh.progress.setMax(ai.maxProgress);
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vh.progress.setProgress(ai.progress);
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} else {
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vh.progress.setVisibility(View.GONE);
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vh.errorReport.setVisibility(View.VISIBLE);
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vh.errorReport.setText(ai.error);
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}
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}
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}
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/**
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* Handler for updating UI from async workers
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*
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* TODO: I don't know the right paradigm for updating a progress bar in a ListView. I'd
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* like to be able to say, "update it if it's visible, skip it if it's not visible."
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*/
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class UIHandler extends Handler {
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private static final int MSG_SET_MAX = 1;
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private static final int MSG_SET_PROGRESS = 2;
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private static final int MSG_INC_PROGRESS = 3;
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private static final int MSG_ERROR = 4;
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@Override
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public void handleMessage(android.os.Message msg) {
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switch (msg.what) {
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case MSG_SET_MAX:
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mLegacyAccounts[msg.arg1].maxProgress = msg.arg2;
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mListView.invalidateViews(); // find a less annoying way to do that
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break;
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case MSG_SET_PROGRESS:
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mLegacyAccounts[msg.arg1].progress = msg.arg2;
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mListView.invalidateViews(); // find a less annoying way to do that
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break;
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case MSG_INC_PROGRESS:
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mLegacyAccounts[msg.arg1].progress++;
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mListView.invalidateViews(); // find a less annoying way to do that
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break;
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case MSG_ERROR:
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mLegacyAccounts[msg.arg1].error = (String) msg.obj;
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mListView.invalidateViews(); // find a less annoying way to do that
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mProceedButton.setEnabled(true);
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break;
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default:
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super.handleMessage(msg);
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}
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}
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public void setMaxProgress(int accountNum, int max) {
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android.os.Message msg = android.os.Message.obtain();
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msg.what = MSG_SET_MAX;
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msg.arg1 = accountNum;
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msg.arg2 = max;
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sendMessage(msg);
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}
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public void setProgress(int accountNum, int progress) {
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android.os.Message msg = android.os.Message.obtain();
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msg.what = MSG_SET_PROGRESS;
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msg.arg1 = accountNum;
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msg.arg2 = progress;
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sendMessage(msg);
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}
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public void incProgress(int accountNum) {
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android.os.Message msg = android.os.Message.obtain();
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msg.what = MSG_INC_PROGRESS;
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msg.arg1 = accountNum;
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sendMessage(msg);
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}
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// Note: also enables the "OK" button, so we pause when complete
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public void error(String error) {
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android.os.Message msg = android.os.Message.obtain();
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msg.what = MSG_ERROR;
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msg.obj = error;
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sendMessage(msg);
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}
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}
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/**
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* Everything above was UI plumbing. This is the meat of this class - a conversion
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* engine to rebuild accounts from the "LocalStore" (pre Android 2.0) format to the
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* "Provider" (2.0 and beyond) format.
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*/
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private class ConversionTask extends AsyncTask<Void, Void, Void> {
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UpgradeAccounts.AccountInfo[] mAccountInfo;
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final Context mContext;
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final Preferences mPreferences;
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public ConversionTask(UpgradeAccounts.AccountInfo[] accountInfo) {
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// TODO: should I copy this?
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mAccountInfo = accountInfo;
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mContext = UpgradeAccounts.this;
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mPreferences = Preferences.getPreferences(mContext);
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}
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@Override
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protected Void doInBackground(Void... params) {
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UIHandler handler = UpgradeAccounts.this.mHandler;
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// Step 1: Analyze accounts and generate progress max values
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for (int i = 0; i < mAccountInfo.length; i++) {
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int estimate = UpgradeAccounts.estimateWork(mContext, mAccountInfo[i].account);
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UpgradeAccounts.this.mHandler.setMaxProgress(i, estimate);
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}
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// Step 2: Clean out IMAP accounts
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for (int i = 0; i < mAccountInfo.length; i++) {
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if (mAccountInfo[i].error == null) {
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cleanImapAccount(mContext, mAccountInfo[i].account, i, handler);
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}
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}
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// Step 3: Copy accounts (and delete old accounts)
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for (int i = 0; i < mAccountInfo.length; i++) {
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if (mAccountInfo[i].error == null) {
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copyAccount(mContext, mAccountInfo[i].account, i, handler);
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}
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deleteAccountStore(mContext, mAccountInfo[i].account, handler);
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mAccountInfo[i].account.delete(mPreferences);
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// reset the progress indicator to mark account "complete" (in case est was wrong)
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UpgradeAccounts.this.mHandler.setMaxProgress(i, 100);
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UpgradeAccounts.this.mHandler.setProgress(i, 100);
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}
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return null;
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}
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@Override
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protected void onPostExecute(Void result) {
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if (!isCancelled()) {
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// if there were no errors, we never enabled the OK button, but
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// we'll just proceed through anyway and return to the Welcome activity
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if (!mProceedButton.isEnabled()) {
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onClickOk();
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}
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}
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}
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}
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/**
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* Estimate the work required to convert an account.
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* 1 (account) + # folders + # messages + # attachments
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*/
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/* package */ static int estimateWork(Context context, Account account) {
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int estimate = 1; // account
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try {
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Store store = LocalStore.newInstance(account.getLocalStoreUri(), context, null);
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Folder[] folders = store.getPersonalNamespaces();
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estimate += folders.length;
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for (int i = 0; i < folders.length; i++) {
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Folder folder = folders[i];
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folder.open(Folder.OpenMode.READ_ONLY, null);
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estimate += folder.getMessageCount();
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}
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estimate += ((LocalStore)store).getStoredAttachmentCount();
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} catch (MessagingException e) {
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Log.d(Email.LOG_TAG, "Exception while estimating account size " + e);
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}
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return estimate;
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}
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/**
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* Clean out an IMAP account. Anything we can reload from server, we delete. This seems
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* drastic, but it greatly reduces the risk of running out of disk space by copying everything.
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*/
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/* package */ void cleanImapAccount(Context context, Account account, int accountNum,
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UIHandler handler) {
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String storeUri = account.getStoreUri();
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if (!storeUri.startsWith(Store.STORE_SCHEME_IMAP)) {
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return;
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}
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if (handler != null) {
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handler.incProgress(accountNum);
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}
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}
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/**
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* Copy an account.
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*/
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/* package */ void copyAccount(Context context, Account account, int accountNum,
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UIHandler handler) {
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// If already exists- just skip it
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int existCount = EmailContent.count(context, EmailContent.Account.CONTENT_URI,
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WHERE_ACCOUNT_UUID_IS, new String[] { account.getUuid() });
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if (existCount > 0) {
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Log.d(Email.LOG_TAG, "No conversion, account exists: " + account.getDescription());
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if (handler != null) {
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handler.error(context.getString(R.string.upgrade_accounts_error));
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}
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return;
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}
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// Create the new account and write it
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EmailContent.Account newAccount = LegacyConversions.makeAccount(context, account);
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newAccount.save(context);
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if (handler != null) {
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handler.incProgress(accountNum);
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}
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// TODO folders
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// TODO messages
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// TODO attachments
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}
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/**
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* Delete an account
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*/
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/* package */ void deleteAccountStore(Context context, Account account, UIHandler handler) {
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try {
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Store store = LocalStore.newInstance(account.getLocalStoreUri(), context, null);
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store.delete();
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} catch (MessagingException e) {
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Log.d(Email.LOG_TAG, "Exception while deleting account " + e);
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if (handler != null) {
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handler.error(context.getString(R.string.upgrade_accounts_error));
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}
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}
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}
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}
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