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package com.libmailcore.androidexample;
import android.app.Activity;
import android.os.Bundle;
import android.app.ListFragment;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.util.Log;
import java.util.ArrayList;
import com.libmailcore.IMAPFetchMessagesOperation;
import com.libmailcore.IMAPMessage;
import com.libmailcore.MailException;
import com.libmailcore.OperationCallback;
//import com.libmailcore.androidexample.dummy.DummyContent;
import com.libmailcore.IndexSet;
import com.libmailcore.IMAPMessagesRequestKind;
import com.libmailcore.Range;
/**
* A list fragment representing a list of MessagesViews. This fragment
* also supports tablet devices by allowing list items to be given an
* 'activated' state upon selection. This helps indicate which item is
* currently being viewed in a {@link MessageViewDetailFragment}.
* <p/>
* Activities containing this fragment MUST implement the {@link Callbacks}
* interface.
*/
public class MessageViewListFragment extends ListFragment implements OperationCallback {
/**
* The serialization (saved instance state) Bundle key representing the
* activated item position. Only used on tablets.
*/
private static final String STATE_ACTIVATED_POSITION = "activated_position";
/**
* The fragment's current callback object, which is notified of list item
* clicks.
*/
private Callbacks mCallbacks = sDummyCallbacks;
/**
* The current activated item position. Only used on tablets.
*/
private int mActivatedPosition = ListView.INVALID_POSITION;
/**
* A callback interface that all activities containing this fragment must
* implement. This mechanism allows activities to be notified of item
* selections.
*/
public interface Callbacks {
/**
* Callback for when an item has been selected.
*/
public void onItemSelected(IMAPMessage msg);
}
/**
* A dummy implementation of the {@link Callbacks} interface that does
* nothing. Used only when this fragment is not attached to an activity.
*/
private static Callbacks sDummyCallbacks = new Callbacks() {
@Override
public void onItemSelected(IMAPMessage msg) {
}
};
/**
* Mandatory empty constructor for the fragment manager to instantiate the
* fragment (e.g. upon screen orientation changes).
*/
public MessageViewListFragment() {
}
private IMAPFetchMessagesOperation fetchMessagesOp;
private ArrayAdapter<MessageAdapter> adapter;
private java.util.List<IMAPMessage> messages;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
fetchMessagesOp = MessagesSyncManager.singleton().session.fetchMessagesByNumberOperation("INBOX", IMAPMessagesRequestKind.IMAPMessagesRequestKindHeaders | IMAPMessagesRequestKind.IMAPMessagesRequestKindStructure, IndexSet.indexSetWithRange(new Range(1, Range.RangeMax)));
fetchMessagesOp.start(this);
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
// Restore the previously serialized activated item position.
if (savedInstanceState != null
&& savedInstanceState.containsKey(STATE_ACTIVATED_POSITION)) {
setActivatedPosition(savedInstanceState.getInt(STATE_ACTIVATED_POSITION));
}
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
// Activities containing this fragment must implement its callbacks.
if (!(activity instanceof Callbacks)) {
throw new IllegalStateException("Activity must implement fragment's callbacks.");
}
mCallbacks = (Callbacks) activity;
}
@Override
public void onDetach() {
super.onDetach();
// Reset the active callbacks interface to the dummy implementation.
mCallbacks = sDummyCallbacks;
}
@Override
public void onListItemClick(ListView listView, View view, int position, long id) {
super.onListItemClick(listView, view, position, id);
// Notify the active callbacks interface (the activity, if the
// fragment is attached to one) that an item has been selected.
// mCallbacks.onItemSelected(DummyContent.ITEMS.get(position).id);
Log.d("msglist", "row clicked: " + id);
mCallbacks.onItemSelected(messages.get((int) id));
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
if (mActivatedPosition != ListView.INVALID_POSITION) {
// Serialize and persist the activated item position.
outState.putInt(STATE_ACTIVATED_POSITION, mActivatedPosition);
}
}
/**
* Turns on activate-on-click mode. When this mode is on, list items will be
* given the 'activated' state when touched.
*/
public void setActivateOnItemClick(boolean activateOnItemClick) {
// When setting CHOICE_MODE_SINGLE, ListView will automatically
// give items the 'activated' state when touched.
getListView().setChoiceMode(activateOnItemClick
? ListView.CHOICE_MODE_SINGLE
: ListView.CHOICE_MODE_NONE);
}
private void setActivatedPosition(int position) {
if (position == ListView.INVALID_POSITION) {
getListView().setItemChecked(mActivatedPosition, false);
} else {
getListView().setItemChecked(position, true);
}
mActivatedPosition = position;
}
public void succeeded() {
messages = fetchMessagesOp.messages();
updateResult();
}
public void failed(MailException exception) {
}
private void updateResult() {
Log.d("msglist", "update result");
ArrayList<MessageAdapter> array = new ArrayList();
for(IMAPMessage msg : messages) {
MessageAdapter msgAdapter = new MessageAdapter(msg);
array.add(msgAdapter);
}
adapter = new ArrayAdapter<MessageAdapter>(
getActivity(),
android.R.layout.simple_list_item_activated_1,
android.R.id.text1,
array);
// TODO: replace with a real list adapter.
setListAdapter(adapter);
}
}
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