From: David ‘Bombe’ Roden Date: Mon, 27 May 2013 20:27:57 +0000 (+0200) Subject: Send events when the mouse cursor enters a controlled component. X-Git-Url: https://git.pterodactylus.net/?a=commitdiff_plain;h=1eab1d307388aff089bd9a0f059f386b0add65a1;p=sonitus.git Send events when the mouse cursor enters a controlled component. --- diff --git a/src/main/java/net/pterodactylus/sonitus/gui/PipelinePanel.java b/src/main/java/net/pterodactylus/sonitus/gui/PipelinePanel.java index ab1c484..dcb3e3f 100644 --- a/src/main/java/net/pterodactylus/sonitus/gui/PipelinePanel.java +++ b/src/main/java/net/pterodactylus/sonitus/gui/PipelinePanel.java @@ -22,10 +22,14 @@ import static javax.swing.BorderFactory.createEtchedBorder; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.Insets; +import java.awt.event.MouseAdapter; +import java.awt.event.MouseEvent; import java.util.Collection; +import java.util.EventListener; import java.util.List; import javax.swing.JLabel; import javax.swing.JPanel; +import javax.swing.event.EventListenerList; import net.pterodactylus.sonitus.data.Controlled; import net.pterodactylus.sonitus.data.Filter; @@ -45,6 +49,9 @@ public class PipelinePanel extends JPanel { /** The pipeline being displayed. */ private final Pipeline pipeline; + /** The component hover listeners. */ + private final EventListenerList componentHoverListeners = new EventListenerList(); + /** * Creates a new pipeline panel displaying the given pipeline. * @@ -58,6 +65,20 @@ public class PipelinePanel extends JPanel { } // + // LISTENER MANAGEMENT + // + + /** + * Adds the given component hover listener to this panel. + * + * @param componentHoverListener + * The component hover listener to add + */ + public void addComponentHoverListener(ComponentHoverListener componentHoverListener) { + componentHoverListeners.add(ComponentHoverListener.class, componentHoverListener); + } + + // // PRIVATE METHODS // @@ -103,10 +124,19 @@ public class PipelinePanel extends JPanel { * @param width * The width of the component in grid cells */ - private void addControlled(Controlled controlled, int level, int position, int width) { + private void addControlled(final Controlled controlled, int level, int position, int width) { /* create a GUI component that displays the component. */ JLabel sourceLabel = new JLabel(controlled.name()); sourceLabel.setBorder(createEtchedBorder()); + sourceLabel.addMouseListener(new MouseAdapter() { + + @Override + public void mouseEntered(MouseEvent mouseEvent) { + for (ComponentHoverListener componentHoverListener : componentHoverListeners.getListeners(ComponentHoverListener.class)) { + componentHoverListener.componentEntered(controlled); + } + } + }); /* show component. */ add(sourceLabel, new GridBagConstraints(position, level, width, 1, 1.0, 1.0, GridBagConstraints.CENTER, GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0)); @@ -127,4 +157,23 @@ public class PipelinePanel extends JPanel { } } + /** + * Interface for objects that want to be notified if the user moves the mouse + * cursor over a controlled component. + * + * @author David ‘Bombe’ Roden + */ + public static interface ComponentHoverListener extends EventListener { + + /** + * Notifies the listener that the mouse is now over the given controlled + * component. + * + * @param controlled + * The controlled component now under the mouse + */ + void componentEntered(Controlled controlled); + + } + }