How to add a row to a table using swt

Question

I am learning swing and have one doubt regarding insertion of row to a table. My requirement is such that I have to add a new row by pressing a add button. But I am not able to proceed. please find the code below:

If some one know please help me....

{public class TableShellExample {


Display d;
 Shell s;
 TableViewer tableViewer;
 CellEditor cellEditor;

 TableShellExample(){
  d = new Display();
  s = new Shell();
  s.setSize(250,250);
  s.setText("Table Shell Example");

  GridLayout g1 = new GridLayout();
  g1.numColumns = 3;
  s.setLayout(g1);
  final Table table = new Table(s,SWT.BORDER |SWT.CHECK|SWT.MULTI | SWT.FULL_SELECTION);
  GridData gd = new GridData(GridData.FILL_BOTH);
  gd.horizontalSpan = 3;
  table.setLayoutData(gd);
  table.setHeaderVisible(true);

  TableColumn tc1 = new TableColumn(table, SWT.LEFT);
  TableColumn tc2 = new TableColumn(table,SWT.CENTER);
  TableColumn tc3 = new TableColumn(table,SWT.CENTER);
  tc1.setText("FIRST NAME");
  tc2.setText("LAST NAME");
  tc3.setText("ADDRESS");
  tc1.setWidth(70);
     tc2.setWidth(70);
     tc3.setWidth(80);
  TableItem it1 = new TableItem(table,SWT.NONE);
  it1.setText(new String[]{"aaa","bbb","pune"});
  TableItem it2 = new TableItem(table,SWT.NONE);
  it2.setText(new String[]{"aaa","bbb","pune"});
  TableItem it3 = new TableItem(table,SWT.NONE);
  it3.setText(new String[]{"aaa","bbb","pune"});

  //tableViewer = new TableViewer(table);
  //tableViewer.setColumnProperties(tc1);
  //tableViewer.setContentProvider(new IContentProvider());
  //tableViewer.setLabelProvider(new TableLabelProvider());

  CellEditor[] editors = new CellEditor[2];
  //editors[0] = new TextCellEditor(table);
  //editors[1] = new TextCellEditor(table);
  //tableViewer.setCellEditors(editors);
  //tableViewer.setCellModifier(new ICellModifier());


  final Text input = new Text(s, SWT.SINGLE | SWT.BORDER);
     input.setTextLimit(5);
     final Button searchBtn = new Button(s, SWT.BORDER | SWT.PUSH);
     searchBtn.setText("Search");
  searchBtn.addSelectionListener(new SelectionAdapter() {
  public void widgetSelected(SelectionEvent e){
   TableItem[] tia = table.getItems();
   for(int i=0;i<tia.length;i++){
    tia[i].getText();
     //tia[i].setBackground(new Color(d, 129, 178, 127));
    //}


   }
  }

  });
  final Button addButton = new Button(s,SWT.BORDER | SWT.PUSH);
  addButton.setText("Add Row");
  addButton.setToolTipText("for addind a new row");
  addButton.addListener(SWT.Selection, new Listener() {

   public void handleEvent(Event arg0) {
    TableEditor te = new TableEditor(table);
    te.grabHorizontal = true;
    te.grabVertical = true;
    te.getItem();
    TableItem ti = table.getItem(0);
    ti.getText();


   }
  });
  s.open();
     while (!s.isDisposed()) {
       if (!d.readAndDispatch())
         d.sleep();
     }
     d.dispose();
 }
 public Vector rowToAdd() {
  Vector defaultRow = new Vector();
  defaultRow.add("column1");
  defaultRow.add("column1");
  return defaultRow;
  }

 public static void main(String[] argv){
  new TableShellExample();
 }
}

Answer 1

Easy way for learning :Text field record add in Table and selected row can display on text field using SWT

---

package rcp_demo.Views;

import org.eclipse.swt.widgets.Composite;

public class TaskView extends ViewPart {

    public static Table table;
    public static TableViewer tableViewer;
    public static TableItem std_item;
    private  Text txt_1,txt_2,txt_3;

    Student stud=new Student();
    List<Student> std=new ArrayList<Student>();

    public TaskView() {
        setTitleImage(SWTResourceManager.getImage("D:\\Icon\\Tasksview.png"));
    }

    @Override
    public void createPartControl(Composite parent) {
        parent.setLayout(null);
        //Three Text
        txt_1 = new Text(parent, SWT.BORDER);
        txt_1.setBounds(21, 10, 76, 19);

        txt_2 = new Text(parent, SWT.BORDER);
        txt_2.setBounds(119, 10, 76, 19);

        txt_3 = new Text(parent, SWT.BORDER);
        txt_3.setBounds(222, 10, 76, 19);

        tableViewer = new TableViewer(parent, SWT.BORDER | SWT.FULL_SELECTION);
        table = tableViewer.getTable();

        //how to pass values of a selected row from tableviewer to a text box in SWT

         table.addListener(SWT.Selection, new Listener()
            {
                @Override
                public void handleEvent(Event e) {
                     Table table = (Table) e.widget;
                        TableItem item = table.getItem(table.getSelectionIndex());

                        /* Fill the texts */
                        for (int col = 0; col < table.getColumnCount(); col++)
                        {
                            if(col==0)
                            {
                                txt_1.setText(item.getText(col));
                            }
                            else if(col==1)
                            {
                                txt_2.setText(item.getText(col));
                            }
                            else if(col==2)
                            {
                                txt_3.setText(item.getText(col));
                            }
                        }
                }
            });
        table.setBounds(21, 47, 290, 213);
        table.setHeaderVisible(true);
        table.setLinesVisible(true);

        //ADD Button

        Button btnAdd = new Button(parent, SWT.NONE);
        btnAdd.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {

                std.add(new Student(txt_1.getText(),txt_2.getText(),txt_3.getText()));
                std_item=new TableItem(table, SWT.NONE);
                std_item.setText(0,txt_1.getText());
                std_item.setText(1,txt_2.getText());
                std_item.setText(2,txt_3.getText());

            }
        });
        btnAdd.setBounds(304, 10, 68, 23);
        btnAdd.setText("Add");

                //Dynamic add column Name using TableViewerColumn 

                String[] Col_names={"Stud_id","Stud_Name","Stud_Gender"};
                for(int i=0;i<Col_names.length;i++)
                {
                    TableViewerColumn tableViewerColumn = new TableViewerColumn(tableViewer, SWT.NONE);
                    TableColumn tblclmnNewColumn = tableViewerColumn.getColumn();
                    tblclmnNewColumn.setWidth(100);
                    tblclmnNewColumn.setText(Col_names[i]);

                }
                //(class: Student)static Item/Data Add

                std.add(new Student("110","Deni","Male"));
                std.add(new Student("111","Hina","Female"));
                std.add(new Student("112","Jem","Male"));


                for(Student s:std)
                {
                    TableItem std_item=new TableItem(table, SWT.NONE);
                    std_item.setText(0,s.getStd_id());
                    std_item.setText(1,s.getStd_nm());
                    std_item.setText(2,s.getStd_gender());
                }

    }
      public TableViewer getViewer() {
          return tableViewer;
  }
    @Override
    public void setFocus() {
        tableViewer.getControl().setFocus();

    }
}

---

Class name : Student.java

---

package rcp_demo.TableView;

public class Student {

private String std_id;
private String std_nm;
private String std_gender;

public Student() {
    // TODO Auto-generated constructor stub
}
public Student(String sid,String snm,String sgender) {
    std_id=sid;
    std_nm=snm;
    std_gender=sgender;
}

public String getStd_id() {
    return std_id;
}
public void setStd_id(String std_id) {
    this.std_id = std_id;
}
public String getStd_nm() {
    return std_nm;
}
public void setStd_nm(String std_nm) {
    this.std_nm = std_nm;
}
public String getStd_gender() {
    return std_gender;
}
public void setStd_gender(String std_gender) {
    this.std_gender = std_gender;
}

}

Answer 2

Here's a simple working example of how to add items to a table when a button is pressed:

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    RowLayout layout = new RowLayout(SWT.VERTICAL);
    layout.fill = true;
    shell.setLayout(layout);
    shell.setSize(200, 200);
    final Table table = new Table(shell, SWT.BORDER | SWT.MULTI);
    final Text text = new Text(shell, SWT.SINGLE | SWT.BORDER);
    text.setText("blahblah text");
    Button button = new Button(shell, SWT.PUSH);
    button.setText("Push me");

    // this is the code you want
    button.addSelectionListener(new SelectionAdapter() {
        @Override
        public void widgetSelected(SelectionEvent e) {
            TableItem item = new TableItem(table, SWT.NONE);
            item.setText(text.getText());
        }
    });

    for (int i = 0; i < 5; i++) {
        TableItem item = new TableItem(table, SWT.NONE);
        item.setText("*** Item " + i + "***");
    }
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

If you must use the TableViewer system to add items, you need to modify whatever Object is passed into the viewer as its input. If you use an IStructuredContentProvider as your viewer's content provider, the getElements method returns an array that goes on to become your table's rows. To update it after a change to the input, just call viewer.refresh()