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/*
* Copyright (C) 2012 Google Inc.
* Licensed to The Android Open Source Project.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.mail.ui;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.DialogInterface.OnMultiChoiceClickListener;
import android.database.Cursor;
import android.text.TextUtils;
import android.view.View;
import android.widget.AdapterView;
import com.android.mail.R;
import com.android.mail.providers.Account;
import com.android.mail.providers.Conversation;
import com.android.mail.providers.Folder;
import com.android.mail.providers.UIProvider;
import com.android.mail.ui.FolderSelectorAdapter.FolderRow;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map.Entry;
public class FoldersSelectionDialog implements OnClickListener, OnMultiChoiceClickListener {
private AlertDialog mDialog;
private FolderChangeCommitListener mCommitListener;
private HashMap<Folder, Boolean> mCheckedState;
private boolean mSingle = false;
private FolderSelectorAdapter mAdapter;
private final Collection<Conversation> mTarget;
private boolean mBatch;
public interface FolderChangeCommitListener {
/**
* Assign the target conversations to the given folders, and remove them from all other
* folders that they might be assigned to.
* @param folders the folders to assign the conversations to.
* @param target the conversations to act upon.
* @param batch whether this is a batch operation
*/
public void onFolderChangesCommit(
Collection<Folder> folders, Collection<Conversation> target, boolean batch);
}
public FoldersSelectionDialog(final Context context, Account account,
final FolderChangeCommitListener commitListener,
Collection<Conversation> target, boolean isBatch) {
mCommitListener = commitListener;
mTarget = target;
mBatch = isBatch;
// Mapping of a folder's uri to its checked state
mCheckedState = new HashMap<Folder, Boolean>();
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle(R.string.folder_selection_dialog_title);
builder.setPositiveButton(R.string.ok, this);
builder.setNegativeButton(R.string.cancel, this);
mSingle = !account
.supportsCapability(UIProvider.AccountCapabilities.MULTIPLE_FOLDERS_PER_CONV);
// TODO: (mindyp) make async
final Cursor foldersCursor = context.getContentResolver().query(account.folderListUri,
UIProvider.FOLDERS_PROJECTION, null, null, null);
try {
final HashSet<String> conversationFolders = new HashSet<String>();
for (Conversation conversation: target) {
if (conversation != null && !TextUtils.isEmpty(conversation.folderList)) {
conversationFolders.addAll(Arrays.asList(TextUtils.split(
conversation.folderList, ",")));
}
}
mAdapter = new FolderSelectorAdapter(context, foldersCursor,
conversationFolders, mSingle);
builder.setAdapter(mAdapter, this);
// Pre-load existing conversation folders.
if (foldersCursor.moveToFirst()) {
do {
final String folderUri = foldersCursor.getString(UIProvider.FOLDER_URI_COLUMN);
if (conversationFolders.contains(folderUri)) {
mCheckedState.put(new Folder(foldersCursor), true);
}
} while (foldersCursor.moveToNext());
}
} finally {
foldersCursor.close();
}
mDialog = builder.create();
}
public void show() {
mDialog.show();
mDialog.getListView().setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
update(mAdapter.getItem(position));
}
});
}
/**
* Call this to update the state of folders as a result of them being
* selected / de-selected.
*
* @param row The item being updated.
*/
public void update(FolderSelectorAdapter.FolderRow row) {
// Update the UI
final boolean add = !row.isPresent();
if (mSingle) {
if (!add) {
// This would remove the check on a single radio button, so just
// return.
return;
}
// Clear any other checked items.
mAdapter.getCount();
for (int i = 0; i < mAdapter.getCount(); i++) {
mAdapter.getItem(i).setIsPresent(false);
}
mCheckedState.clear();
}
row.setIsPresent(add);
mAdapter.notifyDataSetChanged();
mCheckedState.put(row.getFolder(), add);
}
@Override
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case DialogInterface.BUTTON_POSITIVE:
final Collection<Folder> folders = new ArrayList<Folder>();
for (Entry<Folder, Boolean> entry : mCheckedState.entrySet()) {
if (entry.getValue()) {
folders.add(entry.getKey());
}
}
if (mCommitListener != null) {
mCommitListener.onFolderChangesCommit(folders, mTarget, mBatch);
}
break;
case DialogInterface.BUTTON_NEGATIVE:
break;
default:
onClick(dialog, which, true);
break;
}
}
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
final FolderRow row = mAdapter.getItem(which);
if (mSingle) {
// Clear any other checked items.
mCheckedState.clear();
isChecked = true;
}
mCheckedState.put(row.getFolder(), isChecked);
mDialog.getListView().setItemChecked(which, false);
}
}
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