X-Git-Url: https://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Ffunction%2Fbrowser%2FBrowserLauncher.java;fp=src%2Ftim%2Fprune%2Ffunction%2Fbrowser%2FBrowserLauncher.java;h=7c6fa58056a19279ab7306599c711268412ab45c;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/function/browser/BrowserLauncher.java b/src/tim/prune/function/browser/BrowserLauncher.java
new file mode 100644
index 0000000..7c6fa58
--- /dev/null
+++ b/src/tim/prune/function/browser/BrowserLauncher.java
@@ -0,0 +1,122 @@
+package tim.prune.function.browser;
+
+import java.net.URI;
+import javax.swing.JOptionPane;
+
+
+/**
+ * Class to launch a browser window to show an external map
+ * Some code and ideas taken from BareBonesBrowserLaunch at centerkey.com
+ */
+public abstract class BrowserLauncher
+{
+	private static boolean _initialised = false;
+	private static String[] _browserCommand = null;
+	private static boolean _urlNeedsQuotes = false;
+
+
+	/**
+	 * Init method to set up browser
+	 */
+	private static void init()
+	{
+		_browserCommand = null;
+		// First check if "which" command is available
+		if (commandExists("which"))
+		{
+			// which exists, so try browsers in turn
+			String[] browsersToTry = {"firefox", "iceweasel", "konqueror", "opera", "epiphany",
+				"mozilla", "chromium", "midori", "safari", "lynx"};
+			String browserFound = null;
+			for (String browser : browsersToTry)
+			{
+				if (commandExists(browser))
+				{
+					browserFound = browser;
+					break;
+				}
+			}
+			if (browserFound != null) {
+				_browserCommand = new String[] {browserFound, null};
+			}
+		}
+
+		if (_browserCommand == null)
+		{
+			// no which command (or none of the browsers found), so check if os name looks like a mac
+			String osName = System.getProperty("os.name").toLowerCase();
+			boolean isMacOsx = osName.indexOf("mac os") >= 0 || osName.indexOf("darwin") >= 0;
+			if (isMacOsx) {
+				// for Mac Osx just use "open" command
+				_browserCommand = new String[] {"open", null};
+			}
+			else {
+				// assume it's not linux or mac, so try windows method using "start" command
+				_browserCommand = new String[] {"cmd.exe", "/C", "start", "\"\"", null};
+				_urlNeedsQuotes = true;
+			}
+		}
+		_initialised = true;
+	}
+
+
+	/**
+	 * Check if the specified command exists on the system
+	 * @param inCommand command to check
+	 * @return true if the command exists
+	 */
+	private static boolean commandExists(String inCommand)
+	{
+		try
+		{
+			String[] commands = {"which", inCommand};
+			if (Runtime.getRuntime().exec(commands).waitFor() == 0)
+			{
+				return true;
+			}
+		}
+		catch (Exception e) {} // failed
+		return false;
+	}
+
+
+	/**
+	 * Launch a browser window to show the given url
+	 * @param inUrl url to show
+	 */
+	public static void launchBrowser(String inUrl)
+	{
+		if (inUrl == null) {return;}
+		// First choice is to try the Desktop library from java 6, if available
+		try {
+			Class<?> d = Class.forName("java.awt.Desktop");
+			d.getDeclaredMethod("browse", new Class[] {URI.class}).invoke(
+				d.getDeclaredMethod("getDesktop").invoke(null), new Object[] {URI.create(inUrl)});
+			//above code mimics: Desktop.getDesktop().browse(URI.create(inUrl));
+		}
+		catch (Exception ignore)
+		{
+			// The Desktop call failed, need to try backup methods
+			if (!_initialised) {init();}
+			if (_browserCommand == null) {
+				JOptionPane.showMessageDialog(null, "Cannot show url: " + inUrl);
+			}
+			else
+			{
+				try
+				{
+					// enclose url in quotes if necessary
+					String url = inUrl;
+					if (_urlNeedsQuotes) {url = "\"" + url + "\"";}
+					// Fill in url in last element of command array
+					_browserCommand[_browserCommand.length - 1] = url;
+					// execute command to launch browser
+					Runtime.getRuntime().exec(_browserCommand);
+				}
+				catch (Exception e) {
+					JOptionPane.showMessageDialog(null, "Failed to show url: " + inUrl);
+				}
+			}
+		}
+	}
+}