Extras: added extension class for JProgressBar (issue #117)

flatlaf-extras/src/main/java/com/formdev/flatlaf/extras/components/FlatComponentExtension.java

@@ -43,6 +43,16 @@ public interface FlatComponentExtension
 		return (value instanceof Boolean) ? (boolean) value : UIManager.getBoolean( defaultValueKey );
 	}
 
+	default boolean getClientPropertyBoolean( Object key, boolean defaultValue ) {
+		Object value = getClientProperty( key );
+		return (value instanceof Boolean) ? (boolean) value : defaultValue;
+	}
+
+	default void putClientPropertyBoolean( Object key, boolean value, boolean defaultValue ) {
+		putClientProperty( key, (value != defaultValue) ? value : null );
+	}
+
+
 	default <T extends Enum<T>> T getClientPropertyEnumString( Object key, Class<T> enumType,
 		String defaultValueKey, T defaultValue )
 	{

flatlaf-extras/src/main/java/com/formdev/flatlaf/extras/components/FlatProgressBar.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright 2020 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.extras.components;
+
+import static com.formdev.flatlaf.FlatClientProperties.*;
+import javax.swing.JProgressBar;
+
+/**
+ * Subclass of {@link JProgressBar} that provides easy access to FlatLaf specific client properties.
+ *
+ * @author Karl Tauber
+ */
+public class FlatProgressBar
+	extends JProgressBar
+	implements FlatComponentExtension
+{
+	/**
+	 * Returns whether the progress bar has always the larger height even if no string is painted.
+	 */
+	public boolean isLargeHeight() {
+		return getClientPropertyBoolean( PROGRESS_BAR_LARGE_HEIGHT, false );
+	}
+
+	/**
+	 * Specifies whether the progress bar has always the larger height even if no string is painted.
+	 */
+	public void setLargeHeight( boolean largeHeight ) {
+		putClientPropertyBoolean( PROGRESS_BAR_LARGE_HEIGHT, largeHeight, false );
+	}
+
+
+	/**
+	 * Returns whether the progress bar is paint with square edges.
+	 */
+	public boolean isSquare() {
+		return getClientPropertyBoolean( PROGRESS_BAR_SQUARE, false );
+	}
+
+	/**
+	 * Specifies whether the progress bar is paint with square edges.
+	 */
+	public void setSquare( boolean square ) {
+		putClientPropertyBoolean( PROGRESS_BAR_SQUARE, square, false );
+	}
+}