Cleanups

Add missing copyright headers
Remove unnecessary imports
Upgrade to Gradle 7.1

Author: kirill-grouchnikov

demos/flamingo-demo/src/main/java/org/pushingpixels/demo/flamingo/common/QuickStylesPanel.java

@@ -1,10 +1,35 @@
-/**
+/*
+ * Copyright (c) 2005-2021 Radiance Kirill Grouchnikov. All Rights Reserved.
  *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  o Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *
+ *  o Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ *  o Neither the name of the copyright holder nor the names of
+ *    its contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 package org.pushingpixels.demo.flamingo.common;
 
 import org.pushingpixels.demo.flamingo.svg.tango.transcoded.Font_x_generic;
-import org.pushingpixels.flamingo.api.common.CommandActionEvent;
 import org.pushingpixels.flamingo.api.common.CommandButtonPresentationState;
 import org.pushingpixels.flamingo.api.common.icon.DecoratedResizableIcon;
 import org.pushingpixels.flamingo.api.common.model.Command;

demos/flamingo-demo/src/main/java/org/pushingpixels/demo/flamingo/common/SamplePopupMenu.java

@@ -1,5 +1,31 @@
-/**
+/*
+ * Copyright (c) 2005-2021 Radiance Kirill Grouchnikov. All Rights Reserved.
  *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  o Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *
+ *  o Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ *  o Neither the name of the copyright holder nor the names of
+ *    its contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 package org.pushingpixels.demo.flamingo.common;
 

demos/flamingo-demo/src/main/java/org/pushingpixels/demo/flamingo/common/TestCircularProgress.java

@@ -38,7 +38,6 @@
 
 import javax.swing.*;
 import java.awt.*;
-import java.awt.event.ActionEvent;
 
 public class TestCircularProgress extends JFrame {
     public TestCircularProgress() {

demos/flamingo-demo/src/main/java/org/pushingpixels/demo/flamingo/common/TestColorSelector.java

@@ -31,7 +31,6 @@
 
 import org.pushingpixels.demo.flamingo.LocaleSwitcher;
 import org.pushingpixels.demo.flamingo.svg.logo.RadianceLogo;
-import org.pushingpixels.flamingo.api.common.CommandActionEvent;
 import org.pushingpixels.flamingo.api.common.CommandButtonPresentationState;
 import org.pushingpixels.flamingo.api.common.JCommandButton;
 import org.pushingpixels.flamingo.api.common.model.ColorSelectorCommand;

demos/flamingo-demo/src/main/java/org/pushingpixels/demo/flamingo/common/TestCommandButtonPanel.java

@@ -41,7 +41,6 @@
 
 import javax.swing.*;
 import java.awt.*;
-import java.awt.event.ActionEvent;
 import java.util.Locale;
 import java.util.ResourceBundle;
 

demos/flamingo-demo/src/main/java/org/pushingpixels/demo/flamingo/common/TestCommandButtons.java

@@ -35,7 +35,6 @@
 import org.pushingpixels.demo.flamingo.SkinSwitcher;
 import org.pushingpixels.demo.flamingo.svg.logo.RadianceLogo;
 import org.pushingpixels.demo.flamingo.svg.tango.transcoded.*;
-import org.pushingpixels.flamingo.api.common.CommandActionEvent;
 import org.pushingpixels.flamingo.api.common.CommandButtonPresentationState;
 import org.pushingpixels.flamingo.api.common.JCommandButton;
 import org.pushingpixels.flamingo.api.common.icon.EmptyResizableIcon;
@@ -50,7 +49,6 @@
 
 import javax.swing.*;
 import java.awt.*;
-import java.awt.event.ActionEvent;
 import java.text.MessageFormat;
 import java.text.SimpleDateFormat;
 import java.util.List;

demos/flamingo-demo/src/main/java/org/pushingpixels/demo/flamingo/common/TestCommandButtonsAlignment.java

@@ -33,7 +33,6 @@
 import com.jgoodies.forms.factories.Paddings;
 import org.pushingpixels.demo.flamingo.svg.logo.RadianceLogo;
 import org.pushingpixels.demo.flamingo.svg.tango.transcoded.Edit_paste;
-import org.pushingpixels.flamingo.api.common.CommandActionEvent;
 import org.pushingpixels.flamingo.api.common.CommandButtonPresentationState;
 import org.pushingpixels.flamingo.api.common.model.Command;
 import org.pushingpixels.flamingo.api.common.model.CommandButtonPresentationModel;

demos/flamingo-demo/src/main/java/org/pushingpixels/demo/flamingo/common/TestCommandButtonsNoIcon.java

@@ -36,7 +36,6 @@
 import org.pushingpixels.substance.api.skin.BusinessSkin;
 
 import javax.swing.*;
-import java.awt.event.ActionEvent;
 
 public class TestCommandButtonsNoIcon extends TestCommandButtons {
     public TestCommandButtonsNoIcon() {

demos/flamingo-demo/src/main/java/org/pushingpixels/demo/flamingo/common/TestCommandButtonsNoText.java

@@ -33,7 +33,6 @@
 import org.pushingpixels.substance.api.skin.BusinessSkin;
 
 import javax.swing.*;
-import java.awt.event.ActionEvent;
 
 public class TestCommandButtonsNoText extends TestCommandButtons {
     public TestCommandButtonsNoText() {

demos/flamingo-demo/src/main/java/org/pushingpixels/demo/flamingo/common/TestCommandToggleButtons.java

@@ -53,7 +53,6 @@
 import javax.swing.*;
 import java.awt.*;
 import java.awt.color.ColorSpace;
-import java.awt.event.ActionEvent;
 import java.awt.image.ColorConvertOp;
 import java.text.MessageFormat;
 import java.text.SimpleDateFormat;