Add home part to mini desktop.

diff --git a/rcp/org.argeo.minidesktop/src/org/argeo/minidesktop/MiniDesktopManager.java b/rcp/org.argeo.minidesktop/src/org/argeo/minidesktop/MiniDesktopManager.java
index fa66a8e76db0058c0e7dafb8cddf2fe8e717d15a..6f7b7426cb86a9d8d61936028c29687b0522f3a0 100644 (file)
--- a/rcp/org.argeo.minidesktop/src/org/argeo/minidesktop/MiniDesktopManager.java
+++ b/rcp/org.argeo.minidesktop/src/org/argeo/minidesktop/MiniDesktopManager.java
@@ -250,6 +250,14 @@ public class MiniDesktopManager {
        }
 
        protected void initBackground(Composite backgroundArea) {
+               MiniHomePart homePart = new MiniHomePart() {
+
+                       @Override
+                       protected void fillAppsToolBar(ToolBar toolBar) {
+                               createDock(toolBar);
+                       }
+               };
+               homePart.createUiPart(backgroundArea, null);
        }
 
        public void run() {

diff --git a/rcp/org.argeo.minidesktop/src/org/argeo/minidesktop/MiniHomePart.java b/rcp/org.argeo.minidesktop/src/org/argeo/minidesktop/MiniHomePart.java
new file mode 100644 (file)
index 0000000..b2ee6c1
--- /dev/null
+++ b/rcp/org.argeo.minidesktop/src/org/argeo/minidesktop/MiniHomePart.java
@@ -0,0 +1,157 @@
+package org.argeo.minidesktop;
+
+import java.net.InetAddress;
+import java.net.InterfaceAddress;
+import java.net.NetworkInterface;
+import java.net.SocketException;
+import java.net.UnknownHostException;
+import java.util.Enumeration;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.layout.GridLayout;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Group;
+import org.eclipse.swt.widgets.Label;
+import org.eclipse.swt.widgets.ProgressBar;
+import org.eclipse.swt.widgets.ToolBar;
+
+/** A start page displaying network information and resources. */
+public class MiniHomePart {
+
+       public Control createUiPart(Composite parent, Object context) {
+               parent.setLayout(new GridLayout(2, false));
+               Display display = parent.getDisplay();
+
+               // Apps
+               Group appsGroup = new Group(parent, SWT.NONE);
+               appsGroup.setText("Apps");
+               appsGroup.setLayoutData(new GridData(SWT.FILL, SWT.TOP, false, false, 2, 1));
+               ToolBar appsToolBar = new ToolBar(appsGroup, SWT.HORIZONTAL | SWT.FLAT);
+               fillAppsToolBar(appsToolBar);
+
+               // Host
+               Group hostGroup = new Group(parent, SWT.NONE);
+               hostGroup.setLayoutData(new GridData(SWT.FILL, SWT.TOP, false, false));
+               hostGroup.setText("Host");
+               hostGroup.setLayout(new GridLayout(2, false));
+               label(hostGroup, "Hostname: ");
+               try {
+                       InetAddress defaultAddr = InetAddress.getLocalHost();
+                       String hostname = defaultAddr.getHostName();
+                       label(hostGroup, hostname);
+                       label(hostGroup, "Address: ");
+                       label(hostGroup, defaultAddr.getHostAddress());
+               } catch (UnknownHostException e) {
+                       label(hostGroup, e.getMessage());
+               }
+
+               Enumeration<NetworkInterface> netInterfaces = null;
+               try {
+                       netInterfaces = NetworkInterface.getNetworkInterfaces();
+               } catch (SocketException e) {
+                       label(hostGroup, "Interfaces: ");
+                       label(hostGroup, e.getMessage());
+               }
+               if (netInterfaces != null)
+                       while (netInterfaces.hasMoreElements()) {
+                               NetworkInterface netInterface = netInterfaces.nextElement();
+                               try {
+                                       label(hostGroup, convertHardwareAddress(netInterface.getHardwareAddress()));
+                               } catch (SocketException e) {
+                                       label(hostGroup, e.getMessage());
+                               }
+                               label(hostGroup, netInterface.getName());
+                               for (InterfaceAddress addr : netInterface.getInterfaceAddresses()) {
+                                       label(hostGroup, cleanHostAddress(addr.getAddress().getHostAddress()));
+                                       label(hostGroup, Short.toString(addr.getNetworkPrefixLength()));
+                               }
+                       }
+
+               // Resources
+               Group resGroup = new Group(parent, SWT.NONE);
+               resGroup.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false));
+               resGroup.setText("Resources");
+               resGroup.setLayout(new GridLayout(3, false));
+
+               Runtime runtime = Runtime.getRuntime();
+
+               String maxMemoryStr = Long.toString(runtime.maxMemory() / (1024 * 1024)) + " MB";
+               label(resGroup, "Max Java memory: ");
+               label(resGroup, maxMemoryStr);
+               label(resGroup, "Java version: " + Runtime.version().toString());
+
+               label(resGroup, "Usable Java memory: ");
+               Label totalMemory = label(resGroup, maxMemoryStr);
+               ProgressBar totalOnMax = new ProgressBar(resGroup, SWT.SMOOTH);
+               totalOnMax.setMaximum(100);
+               label(resGroup, "Used Java memory: ");
+               Label usedMemory = label(resGroup, maxMemoryStr);
+               ProgressBar usedOnTotal = new ProgressBar(resGroup, SWT.SMOOTH);
+               totalOnMax.setMaximum(100);
+               new Thread() {
+                       @Override
+                       public void run() {
+                               while (!totalOnMax.isDisposed()) {
+                                       display.asyncExec(() -> {
+                                               if (totalOnMax.isDisposed())
+                                                       return;
+                                               totalOnMax.setSelection(javaTotalOnMaxPerct(runtime));
+                                               usedOnTotal.setSelection(javaUsedOnTotalPerct(runtime));
+                                               totalMemory.setText(Long.toString(runtime.totalMemory() / (1024 * 1024)) + " MB");
+                                               usedMemory.setText(
+                                                               Long.toString((runtime.totalMemory() - runtime.freeMemory()) / (1024 * 1024)) + " MB");
+                                       });
+                                       try {
+                                               Thread.sleep(1000);
+                                       } catch (InterruptedException e) {
+                                               return;
+                                       }
+                               }
+                       }
+               }.start();
+               return parent;
+       }
+
+       protected void fillAppsToolBar(ToolBar toolBar) {
+
+       }
+
+       protected int javaUsedOnTotalPerct(Runtime runtime) {
+               return Math.toIntExact((runtime.totalMemory() - runtime.freeMemory()) * 100 / runtime.totalMemory());
+       }
+
+       protected int javaTotalOnMaxPerct(Runtime runtime) {
+               return Math.toIntExact((runtime.totalMemory()) * 100 / runtime.maxMemory());
+       }
+
+       protected Label label(Composite parent, String text) {
+               Label label = new Label(parent, SWT.WRAP);
+               label.setText(text);
+               return label;
+       }
+
+       protected String cleanHostAddress(String hostAddress) {
+               // remove % from Ipv6 addresses
+               int index = hostAddress.indexOf('%');
+               if (index > 0)
+                       return hostAddress.substring(0, index);
+               else
+                       return hostAddress;
+       }
+
+       protected String convertHardwareAddress(byte[] hardwareAddress) {
+               if (hardwareAddress == null)
+                       return "";
+               // from https://stackoverflow.com/a/2797498/7878010
+               StringBuilder sb = new StringBuilder(18);
+               for (byte b : hardwareAddress) {
+                       if (sb.length() > 0)
+                               sb.append(':');
+                       sb.append(String.format("%02x", b).toUpperCase());
+               }
+               return sb.toString();
+       }
+}