bobhablutzel / spwinggridbagdemo Goto Github PK

Simple demo Spwing application that demonstrates the use of the gridBagLayout layout structure.

This demonstration builds on the SpwingBoundTextField demonstration program. If you want more information about the bidirectional binding of models to views, see that demo for details.

gridBagLayout provides the functionality of the Swing GridBagLayout layout class.

• The GridBagConstraints for the element are specified in parenthesis after the name of the element. This allows the direct setting of the weight of the item, the fill model, and the grid positioning and width.
• The GridBagLayout constants (such as BOTH below) are defined as Spwing constants ($BOTH) in this case.
• As an alternative to the gridx/gridy/gridwidth/gridheight specifications, a spreadsheet-like range can be specified. In this case the topleft cell is always specified and the bottomright is optionally specified. If omitted, the cell range is a single cell. This specification comes after the @ character following the GridBagLayout constraints, and will override any gridX/gridY specified.
• "filler" elements are allowed that will be anonymous JPanel instances.

layout {
    frame: gridBagLayout (
         textField(weightx=1.0, weighty=1.0, fill=$BOTH) @A1:C1,
         filler(weightx=1.0) @A2,
         change(gridx=2, gridy=2), // Equals @B2
         show @C2
    );
}