ComboBox: increase maximum row count of popup list to 20 (was 8)

CHANGELOG.md

@@ -20,6 +20,8 @@ FlatLaf Change Log
   [Glazed Lists](https://github.com/glazedlists/glazedlists). (issue #113)
 - Button, CheckBox, RadioButton and ToggleButton: Do not paint focus indicator
   if `AbstractButton.isFocusPainted()` returns `false`.
+- ComboBox: Increase maximum row count of popup list to 20 (was 8). Set UI value
+  `ComboBox.maximumRowCount` to any integer to use a different value.
 - Fixed/improved vertical position of text when scaled on HiDPI screens on
   Windows.
 

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatComboBoxUI.java

@@ -80,6 +80,7 @@ import com.formdev.flatlaf.util.UIScale;
  *
  * @uiDefault ComboBox.minimumWidth				int
  * @uiDefault ComboBox.editorColumns			int
+ * @uiDefault ComboBox.maximumRowCount			int
  * @uiDefault ComboBox.buttonStyle				String	auto (default), button or none
  * @uiDefault Component.arrowType				String	triangle (default) or chevron
  * @uiDefault Component.isIntelliJTheme			boolean
@@ -172,6 +173,11 @@ public class FlatComboBoxUI
 		buttonDisabledArrowColor = UIManager.getColor( "ComboBox.buttonDisabledArrowColor" );
 		buttonHoverArrowColor = UIManager.getColor( "ComboBox.buttonHoverArrowColor" );
 
+		// set maximumRowCount
+		int maximumRowCount = UIManager.getInt( "ComboBox.maximumRowCount" );
+		if( maximumRowCount > 0 && maximumRowCount != 8 && comboBox.getMaximumRowCount() == 8 )
+			comboBox.setMaximumRowCount( maximumRowCount );
+
 		// scale
 		padding = UIScale.scale( padding );
 

flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLaf.properties

@@ -180,6 +180,7 @@ ComboBox.border=com.formdev.flatlaf.ui.FlatRoundBorder
 ComboBox.padding=2,6,2,6
 ComboBox.minimumWidth=72
 ComboBox.editorColumns=0
+ComboBox.maximumRowCount=20
 [mac]ComboBox.showPopupOnNavigation=true
 ComboBox.buttonStyle=auto
 

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatComponentsTest.java

@@ -604,6 +604,7 @@ public class FlatComponentsTest
 			"jj",
 			"kkk"
 		}));
+		comboBox1.setMaximumRowCount(6);
 		add(comboBox1, "cell 1 5,growx");
 
 		//---- comboBox2 ----
@@ -632,6 +633,7 @@ public class FlatComponentsTest
 			"jj",
 			"kkk"
 		}));
+		comboBox3.setMaximumRowCount(6);
 		add(comboBox3, "cell 3 5,growx");
 
 		//---- comboBox4 ----

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatComponentsTest.jfd

@@ -356,6 +356,7 @@ new FormModel {
 					addElement( "jj" )
 					addElement( "kkk" )
 				}
+				"maximumRowCount": 6
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 5,growx"
 			} )
@@ -390,6 +391,7 @@ new FormModel {
 					addElement( "jj" )
 					addElement( "kkk" )
 				}
+				"maximumRowCount": 6
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 3 5,growx"
 			} )

flatlaf-testing/src/main/resources/com/formdev/flatlaf/testing/uidefaults/FlatDarkLaf_1.8.0_202.txt

@@ -196,6 +196,7 @@ ComboBox.editorColumns         0
 ComboBox.font                  [active] $defaultFont [UI]
 ComboBox.foreground            #bbbbbb    javax.swing.plaf.ColorUIResource [UI]
 ComboBox.isEnterSelectablePopup false
+ComboBox.maximumRowCount       20
 ComboBox.minimumWidth          72
 ComboBox.noActionOnKeyNavigation false
 ComboBox.padding               2,6,2,6    javax.swing.plaf.InsetsUIResource [UI]

flatlaf-testing/src/main/resources/com/formdev/flatlaf/testing/uidefaults/FlatLightLaf_1.8.0_202.txt

@@ -200,6 +200,7 @@ ComboBox.editorColumns         0
 ComboBox.font                  [active] $defaultFont [UI]
 ComboBox.foreground            #000000    javax.swing.plaf.ColorUIResource [UI]
 ComboBox.isEnterSelectablePopup false
+ComboBox.maximumRowCount       20
 ComboBox.minimumWidth          72
 ComboBox.noActionOnKeyNavigation false
 ComboBox.padding               2,6,2,6    javax.swing.plaf.InsetsUIResource [UI]