X-Git-Url: http://git.argeo.org/?a=blobdiff_plain;f=swt%2Forg.argeo.swt.minidesktop%2Fsrc%2Forg%2Fargeo%2Fminidesktop%2FMiniHomePart.java;fp=swt%2Forg.argeo.swt.minidesktop%2Fsrc%2Forg%2Fargeo%2Fminidesktop%2FMiniHomePart.java;h=877f643842e7dcf797c694b22e0fe78fdff860bb;hb=59fb5931076a3a22b81b5ac33290523fc941fe2b;hp=0000000000000000000000000000000000000000;hpb=4f4eb7a8c86fc86e02b57d30218ecfdd398f71b4;p=lgpl%2Fargeo-commons.git

diff --git a/swt/org.argeo.swt.minidesktop/src/org/argeo/minidesktop/MiniHomePart.java b/swt/org.argeo.swt.minidesktop/src/org/argeo/minidesktop/MiniHomePart.java
new file mode 100644
index 000000000..877f64384
--- /dev/null
+++ b/swt/org.argeo.swt.minidesktop/src/org/argeo/minidesktop/MiniHomePart.java
@@ -0,0 +1,161 @@
+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();
+				byte[] hardwareAddress = null;
+				try {
+					hardwareAddress = netInterface.getHardwareAddress();
+					if (hardwareAddress != null) {
+						label(hostGroup, convertHardwareAddress(hardwareAddress));
+						label(hostGroup, netInterface.getName());
+						for (InterfaceAddress addr : netInterface.getInterfaceAddresses()) {
+							label(hostGroup, cleanHostAddress(addr.getAddress().getHostAddress()));
+							label(hostGroup, Short.toString(addr.getNetworkPrefixLength()));
+						}
+					}
+				} catch (SocketException e) {
+					label(hostGroup, e.getMessage());
+				}
+			}
+
+		// 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();
+	}
+}