X-Git-Url: http://gitweb.fperrin.net/?a=blobdiff_plain;f=tim%2Fprune%2Ffunction%2Fbrowser%2FBrowserLauncher.java;fp=tim%2Fprune%2Ffunction%2Fbrowser%2FBrowserLauncher.java;h=1decbc3f586de321d7208dad537804af297d4da6;hb=54b9d8bc8f0025ccf97a67d9dd217ef1f9cf082f;hp=0000000000000000000000000000000000000000;hpb=52bf9e8686c916be37a26a0b75340393d4478b05;p=GpsPrune.git

diff --git a/tim/prune/function/browser/BrowserLauncher.java b/tim/prune/function/browser/BrowserLauncher.java
new file mode 100644
index 0000000..1decbc3
--- /dev/null
+++ b/tim/prune/function/browser/BrowserLauncher.java
@@ -0,0 +1,101 @@
+package tim.prune.function.browser;
+
+import javax.swing.JOptionPane;
+
+
+/**
+ * Class to launch a browser window to show an external map
+ */
+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()
+	{
+		// 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", "safari", "lynx"};
+			String browserFound = null;
+			for (int i=0; i<browsersToTry.length && browserFound == null; i++)
+			{
+				if (commandExists(browsersToTry[i]))
+					browserFound = browsersToTry[i];
+			}
+			if (browserFound != null) {
+				_browserCommand = new String[] {browserFound, null};
+			}
+		}
+		else
+		{
+			// no which command, so check if os name looks like a mac
+			boolean isMacOsx = System.getProperty("os.name").toLowerCase().indexOf("mac os") >= 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 (!_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 coommand 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);
+			}
+		}
+	}
+}