rowan.application.quickaccess.RowanMainActivity.java Source code

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Here is the source code for rowan.application.quickaccess.RowanMainActivity.java

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/**
 * Copyright 2013 Tom Renn
 *
 * 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 rowan.application.quickaccess;

import android.content.Intent;
import android.graphics.Shader.TileMode;
import android.graphics.drawable.BitmapDrawable;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.actionbarsherlock.view.Window;

import edu.rowan.app.fragments.FoodCommentFragment;
import edu.rowan.app.fragments.FoodRatingFragment;
import edu.rowan.app.fragments.HomescreenFragment;
import edu.rowan.app.fragments.InfoFragment;
import edu.rowan.app.fragments.MapActivity;
import edu.rowan.app.fragments.WebViewFragment;
import edu.rowan.app.fragments.WebsiteListingFragment;
import edu.rowan.app.fragments.WebsiteListingFragment.ListType;
import edu.rowan.app.util.ActivityFacade;
import rowan.application.quickaccess.R;

/**
 * The Activity handling transactions of various fragments
 * 
 * @author tomrenn
 */
public class RowanMainActivity extends SherlockFragmentActivity implements ActivityFacade {
    private WebViewFragment displayingWebViewFragment;
    private FragmentManager manager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // Actionbar loading displays.
        requestWindowFeature(Window.FEATURE_PROGRESS);
        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
        setTitle(R.string.app_title);

        super.onCreate(savedInstanceState);
        setContentView(R.layout.fragment_holder);

        FoodRatingFragment.prefetch(this, false, null);

        // think the lines below were taken from the Google IO 2012 app
        //This is a workaround for http://b.android.com/15340 from http://stackoverflow.com/a/5852198/132047
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
            BitmapDrawable bg = (BitmapDrawable) getResources()
                    .getDrawable(R.drawable.rowan_actionbar_background_pattern_tile);
            bg.setTileModeXY(TileMode.REPEAT, TileMode.REPEAT);
            getSupportActionBar().setBackgroundDrawable(bg);
        }

        manager = getSupportFragmentManager();
        // only load homescreenFragment if there is no saved previous instance
        if (savedInstanceState == null) {
            FragmentTransaction fragmentTransaction = manager.beginTransaction();
            HomescreenFragment fragment = new HomescreenFragment();
            fragmentTransaction.add(R.id.fragmentHolder, fragment);
            fragmentTransaction.commit();
        }
    }

    /**
     * Various actions this Activity must perform
     * Primary reason of actions are to load different fragments
     */
    @Override
    public void perform(ApplicationAction action, Bundle data) {
        Fragment fragment = null;
        switch (action) {
        case LAUNCH_WEBSITES:
            fragment = WebsiteListingFragment.newInstance(ListType.COMMON_WEBSITES);
            placeNewFragment(fragment);
            break;
        case LAUNCH_ORGANIZATIONS:
            fragment = WebsiteListingFragment.newInstance(ListType.CLUBS);
            placeNewFragment(fragment);
            break;
        case LAUNCH_URL:
            fragment = WebViewFragment.newInstance((String) data.get(WebViewFragment.ADDRESS));
            placeNewFragment(fragment);
            displayingWebViewFragment = (WebViewFragment) fragment;
            break;
        case LAUNCH_RATINGS:
            fragment = new FoodRatingFragment();
            placeNewFragment(fragment);
            break;
        case LAUNCH_RATINGS_COMMENT:
            fragment = new FoodCommentFragment();
            fragment.setArguments(data);
            placeNewFragment(fragment);
            break;
        case LAUNCH_INFO_PAGE:
            fragment = new InfoFragment();
            placeNewFragment(fragment);
            break;
        case LAUNCH_MAPS:
            Intent intent = new Intent(this, MapActivity.class);
            startActivity(intent);
            break;
        default:

        }
    }

    /**
     * Go back in the WebView when displaying a WebViewFragment
     * Otherwise, use the default action
     */
    @Override
    public void onBackPressed() {
        if (displayingWebViewFragment != null && displayingWebViewFragment.isVisible()) {
            // see if we can go back
            if (displayingWebViewFragment.getWebView().canGoBack()) {
                displayingWebViewFragment.getWebView().goBack();
            } else {
                super.onBackPressed();
            }
        } else {
            super.onBackPressed();
        }
    }

    /**
     * Replaces the current fragment the activity is showing with a different one
     * It also places the transaction on the back stack 
     * @param f New fragment to place in activity
     */
    private void placeNewFragment(Fragment f) {
        FragmentManager manager = getSupportFragmentManager();
        FragmentTransaction fragmentTransaction = manager.beginTransaction();
        fragmentTransaction.replace(R.id.fragmentHolder, f);
        fragmentTransaction.addToBackStack(null);
        fragmentTransaction.commit();
    }

    /**
     * Displays a locating indicator in the top right of the action bar
     */
    @Override
    public void showLoading(boolean isLoading) {
        setSupportProgressBarIndeterminateVisibility(isLoading);
    }

    @Override
    public void showLoading(int progress) {
        int scaledProgress = (Window.PROGRESS_END - Window.PROGRESS_START) / 100 * progress;
        setSupportProgress(scaledProgress);
    }
}