Highlight component panels on hover and selection.

[sonitus.git] / src / main / java / net / pterodactylus / sonitus / gui / PipelinePanel.java

diff --git a/src/main/java/net/pterodactylus/sonitus/gui/PipelinePanel.java b/src/main/java/net/pterodactylus/sonitus/gui/PipelinePanel.java
index 83041f1..d47003d 100644 (file)
--- a/src/main/java/net/pterodactylus/sonitus/gui/PipelinePanel.java
+++ b/src/main/java/net/pterodactylus/sonitus/gui/PipelinePanel.java
@@ -22,6 +22,8 @@ import static javax.swing.BorderFactory.createEmptyBorder;
 import static javax.swing.BorderFactory.createEtchedBorder;
 
 import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.Component;
 import java.awt.GridBagConstraints;
 import java.awt.GridBagLayout;
 import java.awt.Insets;
@@ -30,8 +32,10 @@ import java.awt.event.MouseEvent;
 import java.util.Collection;
 import java.util.EventListener;
 import java.util.logging.Logger;
+import javax.swing.JComponent;
 import javax.swing.JLabel;
 import javax.swing.JPanel;
+import javax.swing.UIManager;
 import javax.swing.event.EventListenerList;
 
 import net.pterodactylus.sonitus.data.ControlledComponent;
@@ -55,7 +59,10 @@ public class PipelinePanel extends JPanel {
        private final Pipeline pipeline;
 
        /** The component hover listeners. */
-       private final EventListenerList componentHoverListeners = new EventListenerList();
+       private final EventListenerList componentSelectionListeners = new EventListenerList();
+
+       /** The currently selected component. */
+       private JComponent selectedComponent;
 
        /**
         * Creates a new pipeline panel displaying the given pipeline.
@@ -74,13 +81,13 @@ public class PipelinePanel extends JPanel {
        //
 
        /**
-        * Adds the given component hover listener to this panel.
+        * Adds the given component selection listener to this panel.
         *
-        * @param componentHoverListener
-        *              The component hover listener to add
+        * @param componentSelectionListener
+        *              The component selection listener to add
         */
-       public void addComponentHoverListener(ComponentHoverListener componentHoverListener) {
-               componentHoverListeners.add(ComponentHoverListener.class, componentHoverListener);
+       public void addComponentHoverListener(ComponentSelectionListener componentSelectionListener) {
+               componentSelectionListeners.add(ComponentSelectionListener.class, componentSelectionListener);
        }
 
        //
@@ -131,13 +138,32 @@ public class PipelinePanel extends JPanel {
         */
        private void addControlled(final ControlledComponent controlledComponent, int level, int position, int width, ControlledComponent parentComponent) {
                /* create a GUI component that displays the component. */
-               JPanel componentPanel = createComponentPanel(controlledComponent, parentComponent);
+               final JPanel componentPanel = createComponentPanel(controlledComponent, parentComponent);
                componentPanel.addMouseListener(new MouseAdapter() {
 
                        @Override
+                       public void mouseClicked(MouseEvent e) {
+                               for (Component component : getComponents()) {
+                                       component.setBackground(UIManager.getColor("Panel.background"));
+                               }
+                               for (ComponentSelectionListener componentSelectionListener : componentSelectionListeners.getListeners(ComponentSelectionListener.class)) {
+                                       componentPanel.setBackground(Color.LIGHT_GRAY);
+                                       componentSelectionListener.componentSelected(controlledComponent);
+                               }
+                               selectedComponent = componentPanel;
+                       }
+
+                       @Override
                        public void mouseEntered(MouseEvent mouseEvent) {
-                               for (ComponentHoverListener componentHoverListener : componentHoverListeners.getListeners(ComponentHoverListener.class)) {
-                                       componentHoverListener.componentEntered(controlledComponent);
+                               if (componentPanel != selectedComponent) {
+                                       componentPanel.setBackground(Color.white);
+                               }
+                       }
+
+                       @Override
+                       public void mouseExited(MouseEvent mouseEvent) {
+                               if (componentPanel != selectedComponent) {
+                                       componentPanel.setBackground(UIManager.getColor("Panel.background"));
                                }
                        }
                });
@@ -180,14 +206,6 @@ public class PipelinePanel extends JPanel {
                componentPanel.add(titleLabel, BorderLayout.EAST);
                if (parentComponent != null) {
                        titleLabel.setVisible(!parentComponent.metadata().fullTitle().equals(controlledComponent.metadata().fullTitle()));
-                       parentComponent.addMetadataListener(new MetadataListener() {
-
-                               @Override
-                               public void metadataUpdated(ControlledComponent component, Metadata metadata) {
-                                       titleLabel.setText(metadata.title());
-                                       titleLabel.setVisible(!controlledComponent.metadata().title().equals(metadata.title()));
-                               }
-                       });
                }
                controlledComponent.addMetadataListener(new MetadataListener() {
 
@@ -206,7 +224,7 @@ public class PipelinePanel extends JPanel {
         *
         * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
         */
-       public static interface ComponentHoverListener extends EventListener {
+       public static interface ComponentSelectionListener extends EventListener {
 
                /**
                 * Notifies the listener that the mouse is now over the given controlled
@@ -215,7 +233,7 @@ public class PipelinePanel extends JPanel {
                 * @param controlledComponent
                 *              The controlled component now under the mouse
                 */
-               void componentEntered(ControlledComponent controlledComponent);
+               void componentSelected(ControlledComponent controlledComponent);
 
        }