ComboBox: minimum width is now 72 pixels (was ~50 for non-editable and ~130 for editable comboboxes)

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatClientProperties.java

@@ -99,7 +99,8 @@ public interface FlatClientProperties
 	/**
 	 * Specifies minimum width of a component.
 	 * <p>
-	 * <strong>Component</strong> {@link javax.swing.JButton}, {@link javax.swing.JToggleButton} and {@link javax.swing.text.JTextComponent}<br>
+	 * <strong>Component</strong> {@link javax.swing.JButton}, {@link javax.swing.JToggleButton},
+	 * {@link javax.swing.JComboBox}, {@link javax.swing.JSpinner} and {@link javax.swing.text.JTextComponent}<br>
 	 * <strong>Value type</strong> {@link java.lang.Integer}<br>
 	 */
 	String MINIMUM_WIDTH = "JComponent.minimumWidth";

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

@@ -78,6 +78,8 @@ import com.formdev.flatlaf.util.UIScale;
  *
  * <!-- FlatComboBoxUI -->
  *
+ * @uiDefault ComboBox.minimumWidth				int
+ * @uiDefault ComboBox.editorColumns			int
  * @uiDefault Component.arrowType				String	triangle (default) or chevron
  * @uiDefault Component.isIntelliJTheme			boolean
  * @uiDefault Component.borderColor				Color
@@ -96,6 +98,8 @@ import com.formdev.flatlaf.util.UIScale;
 public class FlatComboBoxUI
 	extends BasicComboBoxUI
 {
+	protected int minimumWidth;
+	protected int editorColumns;
 	protected String arrowType;
 	protected boolean isIntelliJTheme;
 	protected Color borderColor;
@@ -148,6 +152,8 @@ public class FlatComboBoxUI
 
 		LookAndFeel.installProperty( comboBox, "opaque", false );
 
+		minimumWidth = UIManager.getInt( "ComboBox.minimumWidth" );
+		editorColumns = UIManager.getInt( "ComboBox.editorColumns" );
 		arrowType = UIManager.getString( "Component.arrowType" );
 		isIntelliJTheme = UIManager.getBoolean( "Component.isIntelliJTheme" );
 		borderColor = UIManager.getColor( "Component.borderColor" );
@@ -247,6 +253,8 @@ public class FlatComboBoxUI
 					editor.repaint();
 				else if( FlatClientProperties.COMPONENT_ROUND_RECT.equals( propertyName ) )
 					comboBox.repaint();
+				else if( FlatClientProperties.MINIMUM_WIDTH.equals( propertyName ) )
+					comboBox.revalidate();
 			}
 		};
 	}
@@ -263,6 +271,7 @@ public class FlatComboBoxUI
 		Component editor = comboBoxEditor.getEditorComponent();
 		if( editor instanceof JTextField ) {
 			JTextField textField = (JTextField) editor;
+			textField.setColumns( editorColumns );
 
 			// assign a non-null and non-javax.swing.plaf.UIResource border to the text field,
 			// otherwise it is replaced with default text field border when switching LaF
@@ -411,6 +420,13 @@ public class FlatComboBoxUI
 		return isIntelliJTheme ? FlatUIUtils.getParentBackground( c ) : disabledBackground;
 	}
 
+	@Override
+	public Dimension getMinimumSize( JComponent c ) {
+		Dimension minimumSize = super.getMinimumSize( c );
+		minimumSize.width = Math.max( minimumSize.width, scale( FlatUIUtils.minimumWidth( c, minimumWidth ) ) );
+		return minimumSize;
+	}
+
 	@Override
 	protected Dimension getDefaultSize() {
 		@SuppressWarnings( "unchecked" )
@@ -431,6 +447,18 @@ public class FlatComboBoxUI
 
 		Dimension displaySize = super.getDisplaySize();
 
+		// recalculate width without hardcoded 100 under special conditions
+		if( displaySize.width == 100 + padding.left + padding.right &&
+			comboBox.isEditable() &&
+			comboBox.getItemCount() == 0 &&
+			comboBox.getPrototypeDisplayValue() == null )
+		{
+			int width = getDefaultSize().width;
+			width = Math.max( width, editor.getPreferredSize().width );
+			width += padding.left + padding.right;
+			displaySize = new Dimension( width, displaySize.height );
+		}
+
 		uninstallCellPaddingBorder( renderer );
 		return displaySize;
 	}

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

@@ -178,6 +178,8 @@ ColorChooser.swatchesDefaultRecentColor=$control
 
 ComboBox.border=com.formdev.flatlaf.ui.FlatRoundBorder
 ComboBox.padding=2,6,2,6
+ComboBox.minimumWidth=72
+ComboBox.editorColumns=0
 [mac]ComboBox.showPopupOnNavigation=true