| /* |
| * 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.email.provider; |
| |
| import android.app.AlertDialog; |
| import android.content.Context; |
| import android.content.DialogInterface; |
| import android.content.DialogInterface.OnCancelListener; |
| import android.content.DialogInterface.OnClickListener; |
| import android.content.DialogInterface.OnMultiChoiceClickListener; |
| import android.database.Cursor; |
| import android.net.Uri; |
| import android.view.View; |
| import android.widget.AdapterView; |
| import android.widget.Button; |
| |
| import com.android.mail.R; |
| import com.android.mail.providers.Folder; |
| import com.android.mail.providers.UIProvider; |
| import com.android.mail.ui.FolderSelectorAdapter; |
| import com.android.mail.ui.FolderSelectorAdapter.FolderRow; |
| import com.android.mail.ui.SeparatedFolderListAdapter; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map.Entry; |
| |
| public class FolderPickerDialog implements OnClickListener, OnMultiChoiceClickListener, |
| OnCancelListener { |
| private final AlertDialog mDialog; |
| private final HashMap<Folder, Boolean> mCheckedState; |
| private final SeparatedFolderListAdapter mAdapter; |
| private final FolderPickerCallback mCallback; |
| |
| public FolderPickerDialog(final Context context, Uri uri, |
| FolderPickerCallback callback, String header, boolean cancelable) { |
| mCallback = callback; |
| // Mapping of a folder's uri to its checked state |
| mCheckedState = new HashMap<Folder, Boolean>(); |
| AlertDialog.Builder builder = new AlertDialog.Builder(context); |
| builder.setTitle(header); |
| builder.setPositiveButton(R.string.ok, this); |
| builder.setCancelable(cancelable); |
| builder.setOnCancelListener(this); |
| // TODO: Do this on a background thread |
| final Cursor foldersCursor = context.getContentResolver().query( |
| uri, UIProvider.FOLDERS_PROJECTION, null, null, null); |
| try { |
| mAdapter = new SeparatedFolderListAdapter(); |
| String[] headers = context.getResources() |
| .getStringArray(R.array.moveto_folder_sections); |
| mAdapter.addSection(new FolderPickerSelectorAdapter(context, foldersCursor, |
| new HashSet<String>(), R.layout.radiobutton_single_folders_view, headers[2])); |
| builder.setAdapter(mAdapter, this); |
| } 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) { |
| final Object item = mAdapter.getItem(position); |
| if (item instanceof FolderRow) { |
| update((FolderRow) item); |
| } |
| } |
| }); |
| |
| final Button button = mDialog.getButton(AlertDialog.BUTTON_POSITIVE); |
| if (mCheckedState.size() == 0) { |
| // No items are selected, so disable the OK button. |
| button.setEnabled(false); |
| } |
| } |
| |
| /** |
| * 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 (!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++) { |
| Object item = mAdapter.getItem(i); |
| if (item instanceof FolderRow) { |
| ((FolderRow)item).setIsPresent(false); |
| } |
| } |
| mCheckedState.clear(); |
| row.setIsPresent(add); |
| mAdapter.notifyDataSetChanged(); |
| mCheckedState.put(row.getFolder(), add); |
| |
| // Since we know that an item is selected in the list, enable the OK button |
| final Button button = mDialog.getButton(AlertDialog.BUTTON_POSITIVE); |
| button.setEnabled(true); |
| } |
| |
| @Override |
| public void onClick(DialogInterface dialog, int which) { |
| switch (which) { |
| case DialogInterface.BUTTON_POSITIVE: |
| Folder folder = null; |
| for (Entry<Folder, Boolean> entry : mCheckedState.entrySet()) { |
| if (entry.getValue()) { |
| folder = entry.getKey(); |
| break; |
| } |
| } |
| mCallback.select(folder); |
| break; |
| default: |
| onClick(dialog, which, true); |
| break; |
| } |
| } |
| |
| @Override |
| public void onClick(DialogInterface dialog, int which, boolean isChecked) { |
| final FolderRow row = (FolderRow) mAdapter.getItem(which); |
| // Clear any other checked items. |
| mCheckedState.clear(); |
| isChecked = true; |
| mCheckedState.put(row.getFolder(), isChecked); |
| mDialog.getListView().setItemChecked(which, false); |
| } |
| |
| @Override |
| public void onCancel(DialogInterface dialog) { |
| mCallback.cancel(); |
| } |
| } |