Selecting Cells in a Table in Java

Drawer PDF417 in Java Selecting Cells in a Table
Selecting Cells in a Table
PDF-417 2d Barcode Drawer In Java
Using Barcode maker for Java Control to generate, create PDF 417 image in Java applications.
We can select a row, separated rows, a contiguous set of rows, or single cells of a table, depending on the list selection mode In the following example, we want to be able to select single cells, so we choose the single selection mode:
Bar Code Encoder In Java
Using Barcode generator for Java Control to generate, create barcode image in Java applications.
setSelectionMode(ListSelectionModelSINGLE_SELECTION);
Bar Code Recognizer In Java
Using Barcode decoder for Java Control to read, scan read, scan image in Java applications.
If we want to take a certain action when a table cell is selected, we get the ListSelectionModel from the table and add a list selection listener to it
PDF 417 Generator In C#.NET
Using Barcode creation for .NET Control to generate, create PDF-417 2d barcode image in Visual Studio .NET applications.
ListSelectModel lsm = getSelectionModel(); lsmaddListSelectionListener (new TableSelectionListener(med));
PDF-417 2d Barcode Encoder In .NET
Using Barcode maker for ASP.NET Control to generate, create PDF-417 2d barcode image in ASP.NET applications.
We also create a TableSelectionListener class that implements the valueChanged method and passes this information to a Mediator class
PDF417 Printer In .NET Framework
Using Barcode creation for .NET Control to generate, create PDF417 image in .NET applications.
public class TableSelectionListener implements ListSelectionListener { private Mediator md; public TableSelectionListener(Mediator med) { md = med; } public void valueChanged(ListSelectionEvent e) { ListSelectionModel lsm = (ListSelectionModel)egetSource(); if(!lsmisSelectionEmpty()) mdtableClicked(); } }
PDF-417 2d Barcode Encoder In Visual Basic .NET
Using Barcode drawer for VS .NET Control to generate, create PDF-417 2d barcode image in .NET framework applications.
The Mediator class, as discussed previously, is the only class that deals with interactions between separate visual objects In this case, it fetches the correct label for this class and displays it in the text field at the top of the window, as shown in Figure 324 Here is the entire Mediator class:
GS1 - 13 Printer In Java
Using Barcode creation for Java Control to generate, create EAN-13 Supplement 5 image in Java applications.
public class Mediator { Ftable ftable; JTextField txt; int tableRow, tableColumn; FolderModel fmodel; public Mediator (JTextField tx) { txt = tx; } public void setTable(Ftable tbl) { ftable = tbl; } //-------------public void tableClicked() { int row = ftablegetSelectedRow(); int col = ftablegetSelectedColumn(); //don't refresh if cell not changed if ((row != tableRow) || (col != tableColumn)) { tableRow = row; tableColumn = col; fmodel = ftablegetTableModel(); Mail ml = fmodelgetDoc(row, col); txtsetText (mlgetLabel()); } } }
Generating Code128 In Java
Using Barcode drawer for Java Control to generate, create Code 128C image in Java applications.
Patterns Used in This Image Table
Printing ECC200 In Java
Using Barcode printer for Java Control to generate, create Data Matrix 2d barcode image in Java applications.
The UML diagram in Figure 325 shows the use of several common design patterns in the program in Figure 324 As we noted earlier, the separation of the data from the viewer in the Swing JTable is an Observer pattern By catching the table selection in a listener and then sending
Encode ANSI/AIM Code 39 In Java
Using Barcode encoder for Java Control to generate, create Code 39 Extended image in Java applications.
the result to a Mediator class, we are implementing the Mediator pattern Finally, the three mail classes, each producing a different icon, comprise a Factory Method pattern These patterns occur throughout Java programming, especially when you use Swing You'll find it extremely helpful to recognize how often you can refer to patterns in your everyday programming to simplify communication between you and your colleagues Figure 325 A UML diagram of the classes in the Image table
Drawing Barcode In Java
Using Barcode generator for Java Control to generate, create barcode image in Java applications.
Programs on the CD-ROM
USS 93 Printer In Java
Using Barcode printer for Java Control to generate, create ANSI/AIM Code 93 image in Java applications.
Program Description \Swing\Table\SimpleTable\SimpleTablejava Creates a simple table from a two-dimensional String array \Swing\Table\RenderTable\ModelTablejava Creates a table using a TableModel, allowing the boolean column to be displayed as check boxes \Swing\Table\RenderTable\RenderTablejava Creates a simple table using TableModel and a cell renderer that renders one cell in bold red \Swing\Table\ImageTable\MailTablejava Creates a set of mail images in a 3 x 2 table
Scan ANSI/AIM Code 39 In VS .NET
Using Barcode reader for VS .NET Control to read, scan read, scan image in .NET framework applications.
33 The JTree Class
Bar Code Decoder In Visual Studio .NET
Using Barcode decoder for .NET framework Control to read, scan read, scan image in VS .NET applications.
Much like the JTable and JList, the JTree class consists of a data model and an Observer One of the easiest ways to build the tree to display is to create a root node, then add child nodes to it, and then add child nodes to each of them as needed The DefaultMutableTreeNode class is provided as an implementation of the TreeNode interface We create the JTree with a root node as its argument
Code 128B Recognizer In .NET Framework
Using Barcode reader for Visual Studio .NET Control to read, scan read, scan image in VS .NET applications.
root = new DefaultMutableTreeNode("Foods"); JTree tree = new JTree(root);
USS Code 128 Generator In Visual C#
Using Barcode generator for .NET framework Control to generate, create Code128 image in VS .NET applications.
Then we add each node to the root and additional nodes to those to any depth The following program produces a food tree list by category Note that we use the JxFrame class, derived from JFrame at the beginning of this section
Encode EAN13 In VS .NET
Using Barcode printer for ASP.NET Control to generate, create EAN13 image in ASP.NET applications.
public class TreeDemo extends JxFrame { private DefaultMutableTreeNode root; public TreeDemo() { super("Tree Demo"); JPanel jp = new JPanel(); //create the interior panel jpsetLayout(new BorderLayout()); getContentPane()add(jp); //create a scrollpane JScrollPane sp = new JScrollPane(); jpadd("Center", sp); //create a root node root = new DefaultMutableTreeNode("Foods"); JTree tree = new JTree(root); //create the tree spgetViewport()add(tree); //add to the scroller //create three nodes, each with three subnodes addNodes("Meats", "Beef", "Chicken", "Pork"); addNodes("Veggies", "Broccoli", "Carrots", "Peas"); addNodes("Desserts", "Charlotte Russe", "Bananas Flambe", "Peach Melba"); setSize(200, 300); setVisible(true); } //-------------private void addNodes(String b, String n1, String n2, String n3) { DefaultMutableTreeNode base = new DefaultMutableTreeNode(b); rootadd(base); baseadd(new DefaultMutableTreeNode(n1); baseadd(new DefaultMutableTreeNode(n2)); baseadd(new DefaultMutableTreeNode(n3)); }
Bar Code Maker In .NET Framework
Using Barcode creation for ASP.NET Control to generate, create barcode image in ASP.NET applications.
Encoding Barcode In .NET
Using Barcode generation for .NET Control to generate, create barcode image in .NET applications.