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package com.android.calendar;
import android.app.ActionBar;
import android.app.Activity;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.content.Intent;
import android.content.res.Resources;
import android.net.Uri;
import android.os.Bundle;
import android.provider.CalendarContract;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import com.android.calendar.agenda.AgendaFragment;
import com.android.calendar.icalendar.IcalendarUtils;
import com.android.calendar.icalendar.VCalendar;
import com.android.calendar.icalendar.VEvent;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
/**
* Handles requests for sharing calendar events
* This activity returns a vcs formatted file
*/
public class ShareCalendarActivity extends Activity implements CalendarUtils.ShareEventListener {
public static final String EXTRA_LIMIT_TO_ONE_EVENT = "EXTRA_LIMIT_TO_ONE_EVENT";
private static final String TAG = "ShareCalendarActivity";
private HashSet<CalendarUtils.Triple<Long, Long, Long>> mShareEventsList =
new HashSet<CalendarUtils.Triple<Long, Long, Long>>();
private ArrayList<EventInfoFragment> mEventDataFragments = new ArrayList<EventInfoFragment>();
private ActionBar mActionBar;
private AgendaFragment mAgendaFragment;
private long mStartMillis;
private ArrayList<Uri> mFileUris = new ArrayList<Uri>();
private int mNumQueriesCompleted;
private boolean mShouldSelectSingleEvent;
private Resources mResources;
private String mNoSelectionMsg;
@Override
public void onEventShared(CalendarUtils.Triple<Long, Long, Long> eventInfo) {
if (eventInfo.first < 0) return;
mShareEventsList.add(eventInfo);
updateSubtitle();
}
@Override
public void onEventRemoval(long eventId) {
if (eventId < 0) return;
CalendarUtils.Triple<Long, Long, Long> eventInfo =
new CalendarUtils.Triple<Long, Long, Long>(eventId, 0l, 0l);
mShareEventsList.remove(eventInfo);
updateSubtitle();
}
@Override
public void onResetShareList() {
// undo
mShareEventsList.clear();
updateSubtitle();
}
public void updateSubtitle() {
int listSize = mShareEventsList.size();
String subtitle;
// workaround for Android's poor pluralization treatment of 'zero' quantity in English
if (listSize == 0) {
subtitle = mNoSelectionMsg;
} else {
subtitle = mResources.getQuantityString(R.plurals.events_selected,
listSize, listSize);
}
mActionBar.setSubtitle(subtitle);
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intent = getIntent();
Bundle args = intent.getExtras();
if (args != null) {
mShouldSelectSingleEvent = args.getBoolean(EXTRA_LIMIT_TO_ONE_EVENT, false);
}
mStartMillis = System.currentTimeMillis();
setContentView(R.layout.simple_frame_layout);
mResources = getResources();
// create agenda fragment displaying the list of calendar events
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction ft = fragmentManager.beginTransaction();
mAgendaFragment = new AgendaFragment(mStartMillis, false, true);
mAgendaFragment.setShareModeOptions(this, mShouldSelectSingleEvent);
ft.replace(R.id.main_frame, mAgendaFragment);
ft.commit();
mActionBar = getActionBar();
mActionBar.setDisplayShowTitleEnabled(true);
String title = mShouldSelectSingleEvent ?
mResources.getQuantityString(R.plurals.select_events_to_share, 1) :
mResources.getQuantityString(R.plurals.select_events_to_share, 2) ;
mActionBar.setTitle(title);
mNoSelectionMsg = mResources.getString(R.string.no_events_selected);
updateSubtitle();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.share_event_title_bar, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case(R.id.action_done):
generateEventData();
evalIfComplete();
break;
case (R.id.action_cancel):
setResultAndFinish(false);
break;
}
return super.onOptionsItemSelected(item);
}
// called after the data fragment's is done loading
public void queryComplete() {
mNumQueriesCompleted++;
evalIfComplete();
}
// used load event information for the list of selected events
private void generateEventData() {
for (CalendarUtils.Triple<Long, Long, Long> event : mShareEventsList) {
long eventId = event.first;
long eventStartMillis = event.second;
long eventEndMillis = event.third;
// EventInfoFragment just serves as a data fragment and is initialized with
// default arguments for parameters that don't affect model loading
EventInfoFragment eif = new EventInfoFragment(this, eventId, eventStartMillis,
eventEndMillis, CalendarContract.Attendees.ATTENDEE_STATUS_NONE, false, 0,
null);
eif.launchInNonUiMode();
eif.startQueryingData(this);
eif.setQueryCompleteRunnable(new Runnable() {
@Override
public void run() {
// indicate model loading is complete
queryComplete();
}
});
mEventDataFragments.add(eif);
}
}
// generates the vcs files if the data for selected events has been successfully queried
private void evalIfComplete() {
if (mNumQueriesCompleted != 0 && mNumQueriesCompleted == mEventDataFragments.size()) {
for(EventInfoFragment event : mEventDataFragments) {
try {
// generate vcs file
VCalendar calendar = event.generateVCalendar();
// event title serves as the file name prefix
String filePrefix = calendar.getFirstEvent().getProperty(VEvent.SUMMARY);
if (filePrefix == null || filePrefix.length() < 3) {
// default to a generic filename if event title doesn't qualify
// prefix length constraint is imposed by File#createTempFile
filePrefix = "invite";
}
filePrefix = filePrefix.replaceAll("\\W+", " ");
if (!filePrefix.endsWith(" ")) {
filePrefix += " ";
}
File dir = getExternalCacheDir();
File inviteFile = IcalendarUtils.createTempFile(filePrefix, ".vcs", dir);
inviteFile.setReadable(true, false); // set world-readable
if (IcalendarUtils.writeCalendarToFile(calendar, inviteFile)) {
mFileUris.add(Uri.fromFile(inviteFile));
}
} catch (IOException ioe) {
break;
}
}
setResultAndFinish(true);
} else if (mEventDataFragments.size() < 1) { // if no events have been selected
setResultAndFinish(false);
}
}
private void setResultAndFinish(boolean isResultAvailable) {
if (isResultAvailable) {
Intent intent = new Intent();
intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, mFileUris);
setResult(RESULT_OK, intent);
finish();
} else {
setResult(RESULT_CANCELED);
finish();
}
}
}
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