UploadPackageHelper.java :  » UnTagged » ull-etsii-geobloc » com » geobloc » shared » Android Open Source

/**
 * 
 */
package com.geobloc.shared;

import java.util.ArrayList;
import java.util.List;

import org.apache.http.client.HttpClient;

import android.app.ProgressDialog;
import android.content.Context;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.TextView;

import com.geobloc.listeners.IStandardTaskListener;
import com.geobloc.persistance.GeoBlocPackageManager;
import com.geobloc.shared.Utilities.WidgetType;
import com.geobloc.tasks.UploadPackageTask;
import com.geobloc.xml.FormTextField;
import com.geobloc.xml.IField;
import com.geobloc.xml.MultiField;
import com.geobloc.xml.TextXMLWriter;

/**
 * Class built from decoupling the task of managing the packages for sending them to the server.
 * MISSING: manifestBuilder (& manifest.xml)
 * 
 * @author Dinesh Harjani (goldrunner192287@gmail.com)
 *
 */
public class UploadPackageHelper implements IStandardTaskListener {

  private Context callerContext;
  private HttpClient httpClient;
  private GeoBlocPackageManager pm;
  private ViewGroup vg;
  private List<WidgetType> list;
  
  private ProgressDialog pd;
  
  /**
   * Class constructor.
   * @param callerContext The context of this class' creator. Normally it's an Activity, and the keyword 
   *     "this" is more than enough.
   * @param httpClient Since this helper handles the UploadPackageTask, it requires an httpClient.
   * @param pm An initialized GeoBlocPackageManager, used to make the form.xml file. NOTE: It's the caller's 
   *     responsability to check if the GeoBlocPackageManager is not OK.
   * @param vg A ViewGroup(Layout) containing all the GeoBloc Widgets to be transformed into an xml file
   * @param list A list of WidgetType enums, where child i of vg (vg[i]] must be of 
   *     WidgetType list[i], or an exception will be thrown.
   */
  public UploadPackageHelper(Context callerContext, HttpClient httpClient, GeoBlocPackageManager pm, ViewGroup vg, List<WidgetType> list) {
    this.callerContext = callerContext;
    this.httpClient = httpClient;
    this.pm = pm;
    this.vg = vg;
    this.list = list;
  }
  
  /**
   * This method has the responsability of starting the chain of events which lead the user to at least try 
   * to upload a package. For now, it always returns true, since the sending goes through NewTextReader. 
   * For now. An Exception can be thrown if list[i] is not of type WidgetTyoe
   *
   */
  public boolean packAndSend() throws Exception {
    TextXMLWriter writer = new TextXMLWriter();
      String xml = writer.WriteXML(this.getFields());
      
      // add form.xml
      boolean xmlOk = pm.addFile(GBSharedPreferences.__DEFAULT_FORM_FILENAME__, xml);
      
      pd = ProgressDialog.show(callerContext, "Working", "Uploading package to Server...");
    pd.setIndeterminate(false);
    pd.setCancelable(false);
    pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
    //pd.setMax(100);
    //pd.setProgress(0);
    
    UploadPackageTask task = new UploadPackageTask();
    task.setContext(callerContext.getApplicationContext());
    /*
    // get httpClient from ApplicationEx
    ApplicationEx app = (ApplicationEx)this.getApplication();
    HttpClient httpClient = app.getHttpClient();
    */
    task.setHttpClient(httpClient);
    task.setListener(this);
    task.execute(pm.getPackageFullpath());
      
      // for now, always return true
    return true;
  }
  
  /**
   * Method responsible of transforming the GeoBloc Widgets into fields which will be written into a xml file.
   *
   */
  private List<IField> getFields() throws Exception {
    List<IField> myFields = new ArrayList<IField>();
    FormTextField field;
      MultiField fields = new MultiField("form-fields");
    // now, for every widget in ViewGroup
      int enumCount = list.size();
      int childFlag = 0;
      int childCount = vg.getChildCount();
      String name = "Widget not found";
      String value = "Widget not found";
      for (int i = 0; ((i < enumCount) && (childFlag < childCount)); i++) {
        if (list.get(i) == WidgetType.LABEL) {
          TextView tv = (TextView) vg.getChildAt(childFlag);
          name = tv.toString();
          value = tv.getText().toString();
        }
        if ((list.get(i) == WidgetType.INT) || (list.get(i) == WidgetType.STRING)) {
          TextView tv = (TextView) vg.getChildAt(childFlag);
          childFlag++; // These two WidgetTypes combine an EditText & a TextView
          EditText et = (EditText) vg.getChildAt(childFlag);
          
          name = tv.getText().toString();
          value = et.getText().toString();
        }
        if (list.get(i) == WidgetType.CHECKBOX) {
          CheckBox cb = (CheckBox) vg.getChildAt(childFlag);
          name = cb.toString();
          if (cb.isChecked())
            value = "TRUE";
          else
            value = "FALSE";
        }
        field = new FormTextField("widget", name, value);
        fields.addField(field);
        childFlag++;
      }
      // add MultiField
      myFields.add(fields);
    return myFields;
  }

  @Override
  public void taskComplete(Object result) {
    if (pd != null)
      pd.dismiss();
    
    String res = (String) result;
    Utilities.showTitleAndMessageDialog(callerContext, "Package Report", res);    
  }

  @Override
  public void progressUpdate(int progress, int total) {
    // TODO Auto-generated method stub
    
  }
}