ReadDiscussionEntry2Activity.java

package org.openntf.domdisc.ui;

import org.openntf.domdisc.R;
import org.openntf.domdisc.db.DatabaseManager;
import org.openntf.domdisc.general.ApplicationLog;
import org.openntf.domdisc.model.DiscussionEntry;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.app.NavUtils;
import android.widget.FrameLayout;

import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.actionbarsherlock.view.MenuItem;



public class ReadDiscussionEntry2Activity extends SherlockFragmentActivity implements ReadDiscussionEntryFragment.OnResponseItemSelectedListener {

	public static final String EXTRA_URL = "unid";
	private boolean shouldCommitToLog = false;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		DatabaseManager.init(getApplication());
		shouldCommitToLog = getLogALot(this);
		ApplicationLog.d(getClass().getSimpleName() + " onCreate ", shouldCommitToLog);

//		// Need to check if Activity has been switched to landscape mode
//		// If yes, finished and go back to the start Activity
//		if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {
//			ApplicationLog.d(getClass().getSimpleName() + " Landscape - will exit", shouldCommitToLog);
//			finish();
//			return;
//		}

		/**
		 * Needs basic protection from errors
		 */
		setContentView(R.layout.read_discussion_entry2);
		Bundle extras = getIntent().getExtras();
		String unid = "";
		if (extras != null) {
			unid = extras.getString(EXTRA_URL);
			if (unid == null || unid == "") {
				ApplicationLog.w(getClass().getSimpleName() + " NO unid received: " + unid);
			} else {
				FrameLayout containerForReadDiscussionEntryFragment = (FrameLayout) findViewById(R.id.discussionEntryFragment);

				if (containerForReadDiscussionEntryFragment != null) {
//					ApplicationLog.d(getClass().getSimpleName() + " fragment is in layout", shouldCommitToLog);

					// Instantiate a new fragment.
					ReadDiscussionEntryFragment newFragment = ReadDiscussionEntryFragment.newInstance(unid);
					// Add the fragment to the activity, pushing this transaction
					// on to the back stack.
					FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
					ft.replace(R.id.discussionEntryFragment, newFragment);
					ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
					//			        ft.addToBackStack(null);
					ft.commit();
//					ApplicationLog.d(getClass().getSimpleName() + "FragmentTransaction committed", shouldCommitToLog);
				} else {
					ApplicationLog.w(getClass().getSimpleName() + " Did not find the fragment container");
				}
			}

		}
		
		getSupportActionBar().setDisplayHomeAsUpEnabled(true);
		
		setActivityTitle(unid);
	}


	private void setActivityTitle(String unid) {
		//this bit is only in the Activity that is displayed for smaller devices. It does not make sense to change the title for the landscape layout
		if (unid != null && unid.length()>0) {
			DiscussionEntry currentEntry = DatabaseManager.getInstance().getDiscussionEntryWithId(unid);
			if (currentEntry != null) {
				String subject = currentEntry.getSubject();
				getSupportActionBar().setTitle(subject);
			}
		}
	}

	
	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		switch (item.getItemId()) {
		case android.R.id.home:
			//                NavUtils.navigateUpTo(this, new Intent(this, DiscussionEntriesViewActivity.class));
			NavUtils.navigateUpTo(this, new Intent(this, org.openntf.domdisc.ui.StartActivity.class));
			return true;
		}
		return super.onOptionsItemSelected(item);
	}

	
	
	
	private static boolean getLogALot(Context ctxt) {
		SharedPreferences prefs = PreferenceManager
				.getDefaultSharedPreferences(ctxt);
		return prefs.getBoolean("checkbox_preference_logalot", false);
	}


	/**
	 * When an entry in the Response Entries View (Fragment) has been selected this method gets called with the unid of the selected item
	 */
	@Override
	public void onResponseViewItemSelected(String unid) {

		ApplicationLog.d(getClass().getSimpleName() + " got a unid: " + unid, shouldCommitToLog);

		DiscussionEntry selectedEntry = DatabaseManager.getInstance().getDiscussionEntryWithId(unid);

		if (selectedEntry == null) {
			ApplicationLog.w(getClass().getSimpleName() + " Unable to find the selected Discussion Entry - not showing anything new");
		} else {
			FrameLayout containerForReadDiscussionEntryFragment = (FrameLayout) findViewById(R.id.discussionEntryFragment);

			// If the fragment is visible - feed it the DiscussionEntry. If not - launch a new Activity with the unid of the DiscussionEntry
			if (containerForReadDiscussionEntryFragment != null) {
//				ApplicationLog.d(getClass().getSimpleName() + " fragment is in layout", shouldCommitToLog);

				// Instantiate a new fragment.
				ReadDiscussionEntryFragment newFragment = ReadDiscussionEntryFragment.newInstance(unid);
				// Add the fragment to the activity, pushing this transaction
				// on to the back stack.
				FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
				ft.replace(R.id.discussionEntryFragment, newFragment);
				ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
				ft.addToBackStack(null);
				ft.commit();
//				ApplicationLog.d(getClass().getSimpleName() + "FragmentTransaction committed", shouldCommitToLog);
				//			        newFragment.setDiscussionEntry(selectedEntry);
			} else {
				ApplicationLog.d(getClass().getSimpleName() + " fragment is not layout. Launching new ReadDiscussionEntry2Activity", shouldCommitToLog);
				Intent intent = new Intent(getApplicationContext(),ReadDiscussionEntry2Activity.class);
				intent.putExtra(ReadDiscussionEntry2Activity.EXTRA_URL, unid);
				startActivity(intent);
			}
			setActivityTitle(unid);
		}

	}


}