Events.java

/**
 *	This file is part of TuCan Mobile.
 *
 *	TuCan Mobile is free software: you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License as published by
 *	the Free Software Foundation, either version 3 of the License, or
 *	(at your option) any later version.
 *
 *	TuCan Mobile is distributed in the hope that it will be useful,
 *	but WITHOUT ANY WARRANTY; without even the implied warranty of
 *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *	GNU General Public License for more details.
 *
 *	You should have received a copy of the GNU General Public License
 *	along with TuCan Mobile.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.dalthed.tucan.ui;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;

import android.content.Intent;
import android.content.res.Configuration;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Spinner;

import com.dalthed.tucan.R;
import com.dalthed.tucan.TuCanMobileActivity;
import com.dalthed.tucan.TucanMobile;
import com.dalthed.tucan.Connection.AnswerObject;
import com.dalthed.tucan.Connection.CookieManager;
import com.dalthed.tucan.Connection.RequestObject;
import com.dalthed.tucan.Connection.SimpleSecureBrowser;
import com.dalthed.tucan.exceptions.LostSessionException;
import com.dalthed.tucan.exceptions.TucanDownException;
import com.dalthed.tucan.scraper.BasicScraper;
import com.dalthed.tucan.scraper.EventsScraper;
import com.dalthed.tucan.util.ConfigurationChangeStorage;

/**
 * Displays the Events Menu
 * 
 * @author Daniel Thiem
 * 
 */
public class Events extends SimpleWebListActivity {

	private CookieManager localCookieManager;
	private static final String LOG_TAG = "TuCanMobile";
	private String URLStringtoCall;
	/**
	 * Modus der Seite:<br>
	 * 0: Startseite<br>
	 * 1: Veranstaltungen<br>
	 * 2: Anmeldung zu Veranstaltungen<br>
	 * 10: Module
	 */
	private int mode = 0;
	private EventsScraper scrape;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// Standart procedure: Loading URL from Intent
		super.onCreate(savedInstanceState, true, 2);
		setContentView(R.layout.events);
		String CookieHTTPString = getIntent().getExtras().getString("Cookie");
		URLStringtoCall = getIntent().getExtras().getString("URL");
		URL URLtoCall;

		try {
			URLtoCall = new URL(URLStringtoCall);
			localCookieManager = new CookieManager();
			localCookieManager.generateManagerfromHTTPString(URLtoCall.getHost(), CookieHTTPString);
			callResultBrowser = new SimpleSecureBrowser(this);
			RequestObject thisRequest = new RequestObject(URLStringtoCall, localCookieManager,
					RequestObject.METHOD_GET, "");

			callResultBrowser.execute(thisRequest);
		} catch (MalformedURLException e) {
			Log.e(LOG_TAG, e.getMessage());
		}
	}

	@Override
	public void onConfigurationChanged(Configuration newConfig) {
		super.onConfigurationChanged(newConfig);
		setContentView(R.layout.events);
	}

	protected void onListItemClick(ListView l, View v, int position, long id) {
		super.onListItemClick(l, v, position, id);
		// When Item is clicked, a new Request will start
		SimpleSecureBrowser callOverviewBrowser = new SimpleSecureBrowser(this);
		RequestObject thisRequest;
		if (scrape != null) {
			if (mode == 0 && scrape.eventLinks != null) {
				// Modus overview
				switch (position) {
				case 0:
					// Klick auf Module
					mode = 10;
					thisRequest = new RequestObject(TucanMobile.TUCAN_PROT + TucanMobile.TUCAN_HOST
							+ scrape.eventLinks.get(0), scrape.getCookieManager(),
							RequestObject.METHOD_GET, "");
					callOverviewBrowser.execute(thisRequest);
					break;
				case 1:
					// Klick auf Veranstaltungen
					mode = 1;
					thisRequest = new RequestObject(TucanMobile.TUCAN_PROT + TucanMobile.TUCAN_HOST
							+ scrape.eventLinks.get(1), scrape.getCookieManager(),
							RequestObject.METHOD_GET, "");
					callOverviewBrowser.execute(thisRequest);
					break;
				case 2:
					// Klick auf Anmeldung
					mode = 2;
					thisRequest = new RequestObject(TucanMobile.TUCAN_PROT + TucanMobile.TUCAN_HOST
							+ scrape.eventLinks.get(2), scrape.getCookieManager(),
							RequestObject.METHOD_GET, "");
					callOverviewBrowser.execute(thisRequest);
					break;
				}

			} else if (mode == 1 && scrape.eventLink != null) {
				Intent StartSingleEventIntent = new Intent(Events.this, FragmentSingleEvent.class);
				StartSingleEventIntent.putExtra(TucanMobile.EXTRA_URL, TucanMobile.TUCAN_PROT
						+ TucanMobile.TUCAN_HOST + scrape.eventLink.get(position));
				StartSingleEventIntent.putExtra(TucanMobile.EXTRA_COOKIE, scrape.getCookieManager()
						.getCookieHTTPString(TucanMobile.TUCAN_HOST));
				// StartSingleEventIntent.putExtra("UserName", UserName);
				startActivity(StartSingleEventIntent);
			} else if (mode == 2 && scrape.applyLink != null) {
				if (position < scrape.applyLink.size()) {
					thisRequest = new RequestObject(TucanMobile.TUCAN_PROT + TucanMobile.TUCAN_HOST
							+ scrape.applyLink.get(position), scrape.getCookieManager(),
							RequestObject.METHOD_GET, "");
					callOverviewBrowser.execute(thisRequest);
				}
			} else if (mode == 10 && scrape.eventLink != null) {
				Intent StartModuleIntent = new Intent(Events.this, Module.class);
				StartModuleIntent.putExtra(TucanMobile.EXTRA_URL, TucanMobile.TUCAN_PROT
						+ TucanMobile.TUCAN_HOST + scrape.eventLink.get(position));
				StartModuleIntent.putExtra(TucanMobile.EXTRA_COOKIE,
						localCookieManager.getCookieHTTPString(TucanMobile.TUCAN_HOST));
				startActivity(StartModuleIntent);
			}
		}
	}

	public void onPostExecute(AnswerObject result) {

		// Start Tracing zur geschwindigkeitsberschleunigung

		// HTML Parsen
		if (scrape == null) {
			scrape = new EventsScraper(this, result);
		} else {
			scrape.setNewAnswer(result);
		}

		try {
			setListAdapter(scrape.scrapeAdapter(mode));
		} catch (LostSessionException e) {
			Intent BackToLoginIntent = new Intent(this, TuCanMobileActivity.class);
			BackToLoginIntent.putExtra("lostSession", true);
			startActivity(BackToLoginIntent);
		} catch (TucanDownException e) {
			TucanMobile.alertOnTucanDown(this, e.getMessage());
		}

		// Stop tracing

		setFastSwitchSubtites();
		setSpinner();

	}

	/**
	 * 
	 */
	private void setSpinner() {
		if (mode != 0 && mode != 2) {
			Spinner semesterSpinner = (Spinner) findViewById(R.id.exam_semester_spinner);
			semesterSpinner.setVisibility(View.VISIBLE);
			semesterSpinner.setAdapter(scrape.spinnerAdapter());
			semesterSpinner.setSelection(scrape.SemesterOptionSelected);
			semesterSpinner.setOnItemSelectedListener(new OnItemSelectedListener());
		}
	}

	/**
	 * 
	 */
	private void setFastSwitchSubtites() {
		if (mode == 0) {

			fsh.setSubtitle(getResources().getText(R.string.events_subtitle));
		} else if (mode == 1) {
			fsh.setSubtitle(getResources().getText(R.string.events_subtitle_events));
		} else if (mode == 2) {
			fsh.setSubtitle(getResources().getText(R.string.events_subtitle_register));
		} else if (mode == 10) {
			fsh.setSubtitle(getResources().getText(R.string.events_subtitle_modules));
		}
	}

	public class OnItemSelectedListener implements
			android.widget.AdapterView.OnItemSelectedListener {
		int hitcount = 0;

		public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
			if (hitcount == 0) {

			} else {
				if (mode == 10) {
					RequestObject thisRequest = new RequestObject(TucanMobile.TUCAN_PROT
							+ TucanMobile.TUCAN_HOST + scrape.eventLinks.get(0) + "-N"
							+ scrape.SemesterOptionValue.get(position), localCookieManager,
							RequestObject.METHOD_GET, "");
					SimpleSecureBrowser callOverviewBrowser = new SimpleSecureBrowser(Events.this);
					callOverviewBrowser.execute(thisRequest);
				} else if (mode == 1) {
					RequestObject thisRequest = new RequestObject(TucanMobile.TUCAN_PROT
							+ TucanMobile.TUCAN_HOST + scrape.eventLinks.get(1) + "-N"
							+ scrape.SemesterOptionValue.get(position), localCookieManager,
							RequestObject.METHOD_GET, "");
					SimpleSecureBrowser callOverviewBrowser = new SimpleSecureBrowser(Events.this);
					callOverviewBrowser.execute(thisRequest);
				}
			}
			hitcount++;
		}

		public void onNothingSelected(AdapterView<?> parent) {

		}
	}

	@Override
	public boolean onKeyDown(int keyCode, KeyEvent event) {
		if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0 && mode != 0) {

			@SuppressWarnings("unchecked")
			ArrayList<String> eventNameBuffer = (ArrayList<String>) scrape.eventNames.clone();
			ArrayAdapter<String> ListAdapter = new ArrayAdapter<String>(this,
					android.R.layout.simple_list_item_1, eventNameBuffer);
			// Log.i(LOG_TAG,"Exam Names hat: "+examNames.size()+" Elemente");
			setListAdapter(ListAdapter);
			mode = 0;
			Spinner semesterSpinner = (Spinner) findViewById(R.id.exam_semester_spinner);
			semesterSpinner.setVisibility(View.GONE);
			return true;
		} else {
			return super.onKeyDown(keyCode, event);
		}

	}

	@Override
	public ConfigurationChangeStorage saveConfiguration() {
		ConfigurationChangeStorage cStore = new ConfigurationChangeStorage();
		cStore.adapters.add(getListAdapter());
		cStore.addScraper(scrape);
		cStore.mode = mode;
		return cStore;
	}

	@Override
	public void retainConfiguration(ConfigurationChangeStorage conf) {
		setListAdapter(conf.adapters.get(0));
		BasicScraper retainedScraper = conf.getScraper(0, this);
		if (retainedScraper instanceof EventsScraper) {
			scrape = (EventsScraper) retainedScraper;
		}
		mode = conf.mode;
		setSpinner();
		setFastSwitchSubtites();
	}

}