From 963f5dabe12e78a1464d5374779b71825c3cf470 Mon Sep 17 00:00:00 2001
From: Ben Burwell <ben.burwell@trifecta.com>
Date: Sat, 19 Nov 2016 00:32:22 -0500
Subject: Implement basic focusing of planes

---
 .../planes/gui/AircraftMapComponent.java           | 32 ++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/src/com/benburwell/planes/gui/AircraftMapComponent.java b/src/com/benburwell/planes/gui/AircraftMapComponent.java
index 780f1db..268b524 100644
--- a/src/com/benburwell/planes/gui/AircraftMapComponent.java
+++ b/src/com/benburwell/planes/gui/AircraftMapComponent.java
@@ -2,12 +2,14 @@ package com.benburwell.planes.gui;
 
 import com.benburwell.planes.data.AircraftStore;
 import com.benburwell.planes.data.AircraftStoreListener;
+import com.benburwell.planes.data.Position;
 
 import javax.swing.*;
 import java.awt.*;
 import java.awt.event.KeyEvent;
 import java.util.List;
 import java.util.ArrayList;
+import java.util.Collections;
 
 /**
  * Created by ben on 11/18/16.
@@ -15,6 +17,7 @@ import java.util.ArrayList;
 public class AircraftMapComponent implements ViewComponent {
     private AircraftStore store;
     private AircraftMap mapPanel;
+    private String focusedAircraftIdentifier = null;
 
     public AircraftMapComponent(AircraftStore store) {
         this.store = store;
@@ -23,6 +26,23 @@ public class AircraftMapComponent implements ViewComponent {
         this.subscribeToChanges();
     }
 
+    public void focusNextAircraft() {
+        List<String> aircraftIdentifiers = new ArrayList<>(this.store.getAircraft().keySet());
+        Collections.sort(aircraftIdentifiers);
+        if (this.focusedAircraftIdentifier == null && aircraftIdentifiers.size() > 0) {
+            this.focusedAircraftIdentifier = aircraftIdentifiers.get(0);
+        } else {
+            int idx = aircraftIdentifiers.indexOf(this.focusedAircraftIdentifier);
+            if (idx > 0 && idx < aircraftIdentifiers.size() - 1) {
+                this.focusedAircraftIdentifier = aircraftIdentifiers.get(idx++);
+            } else if (aircraftIdentifiers.size() > 0) {
+                this.focusedAircraftIdentifier = aircraftIdentifiers.get(0);
+            } else {
+                this.focusedAircraftIdentifier = null;
+            }
+        }
+    }
+
     private void setupMap() {
         this.mapPanel = new AircraftMap();
         this.mapPanel.setCenter(40.6188942, -75.4947205);
@@ -42,11 +62,23 @@ public class AircraftMapComponent implements ViewComponent {
                 this.mapPanel.moveSouth();
             } else if (e.getKeyCode() == KeyEvent.VK_K && e.getID() == KeyEvent.KEY_PRESSED) {
                 this.mapPanel.moveNorth();
+            } else if (e.getKeyCode() == KeyEvent.VK_0 && e.getID() == KeyEvent.KEY_PRESSED) {
+                this.mapPanel.setCenter(40.6188942, -75.4947205);
+            } else if (e.getKeyCode() == KeyEvent.VK_TAB && e.getID() == KeyEvent.KEY_PRESSED) {
+                this.focusNextAircraft();
+                this.centerMapOnPlane(this.focusedAircraftIdentifier);
             }
             return false;
         });
     }
 
+    private void centerMapOnPlane(String identifier) {
+        if (identifier != null) {
+            Position pos = this.store.getAircraft().get(identifier).getCurrentPosition();
+            this.mapPanel.setCenter(pos.getLatitude(), pos.getLongitude());
+        }
+    }
+
     private void subscribeToChanges() {
         this.store.subscribe(new AircraftStoreListener() {
             @Override
-- 
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