net.potterpcs.recipebook.ExporterActivity.java Source code

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Here is the source code for net.potterpcs.recipebook.ExporterActivity.java

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/*
 *    Copyright 2012 Michael Potter
 *
 * 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.
 * 
 */

/*
 * ExporterActivity.java - Export screen that allows the user to choose
 * which recipes are exported. 
 */

package net.potterpcs.recipebook;

import java.io.IOException;

import android.app.AlertDialog;
import android.app.ListActivity;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.support.v4.widget.SimpleCursorAdapter;
import android.view.View;
import android.widget.ListAdapter;

public class ExporterActivity extends ListActivity {
    // Handle to the data layer
    RecipeData data;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        data = ((RecipeBook) getApplication()).getData();

        // Simple setup for a checked list of recipe names
        setContentView(R.layout.exporter);
        ListAdapter adapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_checked,
                data.getAllRecipes(), new String[] { RecipeData.RT_NAME }, new int[] { android.R.id.text1 }, 0);

        setListAdapter(adapter);
    }

    public void onExportButton(View v) {
        // TODO Allow the user to choose export location/filename

        // Unlike in the importer, here we *can* use getCheckedItemIds(),
        // because CursorAdapters have stable IDs.
        long[] ids = getListView().getCheckedItemIds();

        // Try to export
        String filename = null;
        try {
            filename = data.exportRecipes(ids);
        } catch (IOException e) {
            // Export failed
            // TODO Dialog
        }

        // Show the filename
        if (filename != null) {
            new AlertDialog.Builder(this).setMessage(filename)
                    .setPositiveButton(android.R.string.ok, new OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            dialog.dismiss();
                        }
                    }).show();
        }
    }

    public void onSelectAllButton(View v) {
        for (int i = 0; i < getListView().getCount(); i++) {
            getListView().setItemChecked(i, true);
        }
    }

    public void onClearAllButton(View v) {
        for (int i = 0; i < getListView().getCount(); i++) {
            getListView().setItemChecked(i, false);
        }
    }
}