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Diffstat (limited to 'src/com/android/photos/data/PhotoSetLoader.java')
-rw-r--r-- | src/com/android/photos/data/PhotoSetLoader.java | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/src/com/android/photos/data/PhotoSetLoader.java b/src/com/android/photos/data/PhotoSetLoader.java new file mode 100644 index 000000000..56c82c4a9 --- /dev/null +++ b/src/com/android/photos/data/PhotoSetLoader.java @@ -0,0 +1,115 @@ +/* + * Copyright (C) 2013 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.photos.data; + +import android.content.Context; +import android.content.CursorLoader; +import android.database.ContentObserver; +import android.database.Cursor; +import android.graphics.drawable.Drawable; +import android.net.Uri; +import android.provider.MediaStore; +import android.provider.MediaStore.Files; +import android.provider.MediaStore.Files.FileColumns; + +import com.android.photos.drawables.DataUriThumbnailDrawable; +import com.android.photos.shims.LoaderCompatShim; + +import java.util.ArrayList; + +public class PhotoSetLoader extends CursorLoader implements LoaderCompatShim<Cursor> { + + public static final String SUPPORTED_OPERATIONS = "supported_operations"; + + private static final Uri CONTENT_URI = Files.getContentUri("external"); + public static final String[] PROJECTION = new String[] { + FileColumns._ID, + FileColumns.DATA, + FileColumns.WIDTH, + FileColumns.HEIGHT, + FileColumns.DATE_ADDED, + FileColumns.MEDIA_TYPE, + SUPPORTED_OPERATIONS, + }; + + private static final String SORT_ORDER = FileColumns.DATE_ADDED + " DESC"; + private static final String SELECTION = + FileColumns.MEDIA_TYPE + " == " + FileColumns.MEDIA_TYPE_IMAGE + + " OR " + + FileColumns.MEDIA_TYPE + " == " + FileColumns.MEDIA_TYPE_VIDEO; + + public static final int INDEX_ID = 0; + public static final int INDEX_DATA = 1; + public static final int INDEX_WIDTH = 2; + public static final int INDEX_HEIGHT = 3; + public static final int INDEX_DATE_ADDED = 4; + public static final int INDEX_MEDIA_TYPE = 5; + public static final int INDEX_SUPPORTED_OPERATIONS = 6; + + private static final Uri GLOBAL_CONTENT_URI = Uri.parse("content://" + MediaStore.AUTHORITY + "/external/"); + private final ContentObserver mGlobalObserver = new ForceLoadContentObserver(); + + public PhotoSetLoader(Context context) { + super(context, CONTENT_URI, PROJECTION, SELECTION, null, SORT_ORDER); + } + + @Override + protected void onStartLoading() { + super.onStartLoading(); + getContext().getContentResolver().registerContentObserver(GLOBAL_CONTENT_URI, + true, mGlobalObserver); + } + + @Override + protected void onReset() { + super.onReset(); + getContext().getContentResolver().unregisterContentObserver(mGlobalObserver); + } + + @Override + public Drawable drawableForItem(Cursor item, Drawable recycle) { + DataUriThumbnailDrawable drawable = null; + if (recycle == null || !(recycle instanceof DataUriThumbnailDrawable)) { + drawable = new DataUriThumbnailDrawable(); + } else { + drawable = (DataUriThumbnailDrawable) recycle; + } + drawable.setImage(item.getString(INDEX_DATA), + item.getInt(INDEX_WIDTH), item.getInt(INDEX_HEIGHT)); + return drawable; + } + + @Override + public Uri uriForItem(Cursor item) { + return null; + } + + @Override + public ArrayList<Uri> urisForSubItems(Cursor item) { + return null; + } + + @Override + public void deleteItemWithPath(Object path) { + + } + + @Override + public Object getPathForItem(Cursor item) { + return null; + } +} |