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/*
* Copyright (C) 2015 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.messaging.datamodel.data;
import android.app.LoaderManager;
import android.content.Context;
import android.content.Loader;
import android.database.Cursor;
import android.os.Bundle;
import android.support.annotation.Nullable;
import com.android.messaging.datamodel.BoundCursorLoader;
import com.android.messaging.datamodel.GalleryBoundCursorLoader;
import com.android.messaging.datamodel.binding.BindableData;
import com.android.messaging.datamodel.binding.BindingBase;
import com.android.messaging.util.Assert;
import com.android.messaging.util.BuglePrefs;
import com.android.messaging.util.BuglePrefsKeys;
import com.android.messaging.util.LogUtil;
/**
* Services data needs for MediaPicker.
*/
public class MediaPickerData extends BindableData {
public interface MediaPickerDataListener {
void onMediaPickerDataUpdated(MediaPickerData mediaPickerData, Object data, int loaderId);
}
private static final String BINDING_ID = "bindingId";
private final Context mContext;
private LoaderManager mLoaderManager;
private final GalleryLoaderCallbacks mGalleryLoaderCallbacks;
private MediaPickerDataListener mListener;
public MediaPickerData(final Context context) {
mContext = context;
mGalleryLoaderCallbacks = new GalleryLoaderCallbacks();
}
public static final int GALLERY_IMAGE_LOADER = 1;
/**
* A trampoline class so that we can inherit from LoaderManager.LoaderCallbacks multiple times.
*/
private class GalleryLoaderCallbacks implements LoaderManager.LoaderCallbacks<Cursor> {
@Override
public Loader<Cursor> onCreateLoader(final int id, final Bundle args) {
final String bindingId = args.getString(BINDING_ID);
// Check if data still bound to the requesting ui element
if (isBound(bindingId)) {
switch (id) {
case GALLERY_IMAGE_LOADER:
return new GalleryBoundCursorLoader(bindingId, mContext);
default:
Assert.fail("Unknown loader id for gallery picker!");
break;
}
} else {
LogUtil.w(LogUtil.BUGLE_TAG, "Loader created after unbinding the media picker");
}
return null;
}
/**
* {@inheritDoc}
*/
@Override
public void onLoadFinished(final Loader<Cursor> loader, final Cursor data) {
final BoundCursorLoader cursorLoader = (BoundCursorLoader) loader;
if (isBound(cursorLoader.getBindingId())) {
switch (loader.getId()) {
case GALLERY_IMAGE_LOADER:
mListener.onMediaPickerDataUpdated(MediaPickerData.this, data,
GALLERY_IMAGE_LOADER);
break;
default:
Assert.fail("Unknown loader id for gallery picker!");
break;
}
} else {
LogUtil.w(LogUtil.BUGLE_TAG, "Loader finished after unbinding the media picker");
}
}
/**
* {@inheritDoc}
*/
@Override
public void onLoaderReset(final Loader<Cursor> loader) {
final BoundCursorLoader cursorLoader = (BoundCursorLoader) loader;
if (isBound(cursorLoader.getBindingId())) {
switch (loader.getId()) {
case GALLERY_IMAGE_LOADER:
mListener.onMediaPickerDataUpdated(MediaPickerData.this, null,
GALLERY_IMAGE_LOADER);
break;
default:
Assert.fail("Unknown loader id for media picker!");
break;
}
} else {
LogUtil.w(LogUtil.BUGLE_TAG, "Loader reset after unbinding the media picker");
}
}
}
public void startLoader(final int loaderId, final BindingBase<MediaPickerData> binding,
@Nullable Bundle args, final MediaPickerDataListener listener) {
if (args == null) {
args = new Bundle();
}
args.putString(BINDING_ID, binding.getBindingId());
if (loaderId == GALLERY_IMAGE_LOADER) {
mLoaderManager.initLoader(loaderId, args, mGalleryLoaderCallbacks).forceLoad();
} else {
Assert.fail("Unsupported loader id for media picker!");
}
mListener = listener;
}
public void destroyLoader(final int loaderId) {
mLoaderManager.destroyLoader(loaderId);
}
public void init(final LoaderManager loaderManager) {
mLoaderManager = loaderManager;
}
@Override
protected void unregisterListeners() {
// This could be null if we bind but the caller doesn't init the BindableData
if (mLoaderManager != null) {
mLoaderManager.destroyLoader(GALLERY_IMAGE_LOADER);
mLoaderManager = null;
}
}
/**
* Gets the last selected chooser index, or -1 if no selection has been saved.
*/
public int getSelectedChooserIndex() {
return BuglePrefs.getApplicationPrefs().getInt(
BuglePrefsKeys.SELECTED_MEDIA_PICKER_CHOOSER_INDEX,
BuglePrefsKeys.SELECTED_MEDIA_PICKER_CHOOSER_INDEX_DEFAULT);
}
/**
* Saves the selected media chooser index.
* @param selectedIndex the selected media chooser index.
*/
public void saveSelectedChooserIndex(final int selectedIndex) {
BuglePrefs.getApplicationPrefs().putInt(BuglePrefsKeys.SELECTED_MEDIA_PICKER_CHOOSER_INDEX,
selectedIndex);
}
}
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