tests/common/com/android/documentsui/dirlist/TestModel.java

/*
 * 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.documentsui.dirlist;

import android.database.MatrixCursor;
import android.provider.DocumentsContract.Document;

import com.android.documentsui.DirectoryResult;
import com.android.documentsui.roots.RootCursorWrapper;

import java.util.Random;

public class TestModel extends Model {

    static final String[] COLUMNS = new String[]{
        RootCursorWrapper.COLUMN_AUTHORITY,
        Document.COLUMN_DOCUMENT_ID,
        Document.COLUMN_FLAGS,
        Document.COLUMN_DISPLAY_NAME,
        Document.COLUMN_SIZE,
        Document.COLUMN_MIME_TYPE
    };

    private final String mAuthority;

    public TestModel(String authority) {
        super();
        mAuthority = authority;
    }

    public void update(String... names) {
        Random rand = new Random();

        MatrixCursor c = new MatrixCursor(COLUMNS);
        for (int i = 0; i < names.length; i++) {
            MatrixCursor.RowBuilder row = c.newRow();
            row.add(RootCursorWrapper.COLUMN_AUTHORITY, mAuthority);
            row.add(Document.COLUMN_DOCUMENT_ID, Integer.toString(i));
            row.add(Document.COLUMN_FLAGS, Document.FLAG_SUPPORTS_DELETE);
            // Generate random document names and sizes. This forces the model's internal sort code
            // to actually do something.
            row.add(Document.COLUMN_DISPLAY_NAME, names[i]);
            row.add(Document.COLUMN_SIZE, rand.nextInt());
        }

        DirectoryResult r = new DirectoryResult();
        r.cursor = c;
        update(r);
    }

    String idForPosition(int p) {
        return Integer.toString(p);
    }
}