ViewItemActivity.java

//
// Copyright 2011 Thomas Gumprecht, Robert Jacob, Thomas Pieronczyk
//
// 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 net.sourcewalker.garanbot;

import java.text.DateFormat;

import net.sourcewalker.garanbot.api.ClientException;
import net.sourcewalker.garanbot.api.Item;
import net.sourcewalker.garanbot.data.GaranboItemsProvider;
import net.sourcewalker.garanbot.data.GaranbotDBMetaData;
import android.app.Activity;
import android.content.ContentUris;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.Window;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

/**
 * This activity should display one item from the database in a read-only
 * manner. It should have a button or menu item to bring the user to the
 * {@link EditItemActivity} where he can edit the item.
 * 
 * @author Xperimental
 */
public class ViewItemActivity extends Activity {

    private static final String TAG = "ViewItemActivity";
    private static final int REQUEST_EDIT = 100;

    private long itemId;
    private ImageView imageView;
    private TextView nameField;
    private TextView manufacturerField;
    private TextView modelField;
    private TextView vendorField;
    private TextView locationField;
    private TextView purchaseField;
    private TextView warrantyField;
    private TextView notesField;

    /*
     * (non-Javadoc)
     * @see android.app.Activity#onCreate(android.os.Bundle)
     */
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
        setContentView(R.layout.item_view);

        imageView = (ImageView) findViewById(R.id.item_view_image);
        nameField = (TextView) findViewById(R.id.item_view_name);
        manufacturerField = (TextView) findViewById(R.id.item_view_manufacturer);
        modelField = (TextView) findViewById(R.id.item_view_model);
        vendorField = (TextView) findViewById(R.id.item_view_vendor);
        locationField = (TextView) findViewById(R.id.item_view_location);
        purchaseField = (TextView) findViewById(R.id.item_view_purchase);
        warrantyField = (TextView) findViewById(R.id.item_view_endwarranty);
        notesField = (TextView) findViewById(R.id.item_view_notes);

        String action = getIntent().getAction();
        if (action == null) {
            finish();
        }
        try {
            itemId = Long.parseLong(action);
        } catch (NumberFormatException e) {
            Log.w(TAG, "Invalid ID: " + action);
            finish();
        }

        loadData();
    }

    /**
     * Load the item data from database.
     */
    private void loadData() {
        Cursor cursor = managedQuery(ContentUris.withAppendedId(
                GaranboItemsProvider.CONTENT_URI_ITEMS, itemId),
                GaranbotDBMetaData.DEFAULT_PROJECTION, null, null, null);
        if (cursor.moveToFirst()) {
            Item dbItem;
            try {
                dbItem = Item.fromCursor(cursor);
                setData(dbItem);
            } catch (ClientException e) {
                Log.e(TAG, "Can't create Item: " + e.getMessage(), e);
                finish();
            }
        } else {
            Toast.makeText(this, R.string.toast_view_itemnotfound,
                    Toast.LENGTH_LONG).show();
            finish();
        }
    }

    private void setData(Item source) {
        DateFormat dateFormat = DateFormat.getDateInstance();
        nameField.setText(source.getName());
        manufacturerField.setText(source.getManufacturer());
        modelField.setText(source.getItemType());
        vendorField.setText(source.getVendor());
        locationField.setText(source.getLocation());
        purchaseField.setText(dateFormat.format(source.getPurchaseDate()));
        warrantyField.setText(dateFormat.format(source.getEndOfWarranty()));
        notesField.setText(source.getNotes());
        if (source.hasPicture()) {
            imageView.setImageURI(ContentUris.withAppendedId(
                    GaranboItemsProvider.CONTENT_URI_IMAGES,
                    source.getLocalId()));
        }
    }

    /*
     * (non-Javadoc)
     * @see android.app.Activity#onCreateOptionsMenu(android.view.Menu)
     */
    @Override
    public boolean onCreateOptionsMenu(final Menu menu) {
        getMenuInflater().inflate(R.menu.view_options, menu);
        return true;
    }

    /*
     * (non-Javadoc)
     * @see android.app.Activity#onOptionsItemSelected(android.view.MenuItem)
     */
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case R.id.view_edit:
            final Uri itemUri = ContentUris.withAppendedId(
                    GaranboItemsProvider.CONTENT_URI_ITEMS, itemId);
            final Intent editIntent = new Intent(this, EditItemActivity.class);
            editIntent.setAction(itemUri.toString());
            startActivityForResult(editIntent, REQUEST_EDIT);
            break;
        case R.id.view_delete:
            ItemUtilities.deleteItem(this, itemId);
            finish();
            break;
        default:
            throw new IllegalArgumentException("Unknown menu item: " + item);
        }
        return true;
    }

    /*
     * (non-Javadoc)
     * @see android.app.Activity#onActivityResult(int, int,
     * android.content.Intent)
     */
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        switch (requestCode) {
        case REQUEST_EDIT:
            loadData();
            break;
        }
        super.onActivityResult(requestCode, resultCode, data);
    }

}