Teams Winter 2011/team1/BlackBerry/Add Mapping Option

10. Add Mapping Option

10.1. In order to implement Address Locator we need to add address field and getter/setter methods to Student class:

  public Student(String firstName, String lastName, String email, String address) {
      this.firstName = firstName;
      this.lastName = lastName;
      this.email = email;
      this.email = address; //add address field
   }

   public String getAddress(){
      return address;
   }
   public void setAddress(String address){
      this.address = address;
   }

10.2. Add EditTextFields to Add, Edit and view option:
viewItem

   BasicEditField addressField = new BasicEditField("address: ",student.getAddress(),50,Field.NON_FOCUSABLE);
   addressField.setBorder(roundedBorder);
   addressField.setBackground(solidBackground);
   add(addressField);

addItem

   EditField inputField4 = new EditField("Student's address: ","");           
   addDialog.add(inputField4);

   // Display the dialog and add a new element to the list
   if(addDialog.doModal() == 0) {
     addElementToList(new Student(inputField1.getText(),inputField2.getText(),inputField3.getText(), inputField4.getText()));                                                    
   }

editItem

 
  EditField inputField4 = new EditField("Address: ",studentOld.getAddress());           
  editDialog.add(inputField4);

  if(editDialog.doModal() == 0)
    {
      studentNew.setFirstName(inputField1.getText());
      studentNew.setLastName(inputField2.getText());
      studentNew.setEmail(inputField3.getText());
      studentNew.setAddress(inputField4.getText()); //set Address
      editListElement(studentOld, studentNew);                                           
    }

10.3. Add the Map Option to the manu:

   //Show the address on the map
   ImageMenuItem mapItem = new ImageMenuItem("Address on Map", 500, 5, MENU_MAP);
   _mainScreen.addMenuItem(mapItem);

10.4. Implement address locator:

   mapItem.setCommand(new Command(new CommandHandler(){
      public void execute(ReadOnlyCommandMetadata metadata, Object context)
      {
         Student student = (Student) _keywordFilterField.getSelectedElement();
               
         if(student != null)
         {                   
            try
            {                       
               String address = student.getAddress();
               //start coordinates
               Coordinates co = new Coordinates(45.423488, -75.697929, 0);
               Landmark[] landm = Locator.geocode(address, co);
               //Get latitude and longitude
               double lon = landm[0].getQualifiedCoordinates().getLongitude()*100000.0 ;
               double lat = landm[0].getQualifiedCoordinates().getLatitude()*100000.0;
                //create XML document
               StringBuffer document = new StringBuffer("<location-document><location lon='");
               document.append(lon).append("' lat='").append(lat).append("' label='").append(address);
               document.append("' description='Student Address' zoom='10'/></location-document>");
                       
               // Invoke maps application for current Contact
               Invoke.invokeApplication(Invoke.APP_TYPE_MAPS, new MapsArguments(MapsArguments.ARG_LOCATION_DOCUMENT, document.toString()));
                       
              } catch(LocatorException ex){
                  Dialog.alert("cannot get location: " + ex.getMessage());
              } catch(Exception ex){
                  Dialog.alert("map application is not available: "+ ex.getMessage());
             }
            }
          }
     }));