[Japi-cvs] SF.net SVN: japi: [340] libs/swing-misc/trunk/src/net/sf/japi/swing/misc/ ConsoleProgress.java

[<chr...@us...>]

Revision: 340
          http://svn.sourceforge.net/japi/?rev=340&view=rev
Author:   christianhujer
Date:     2007-05-15 04:25:57 -0700 (Tue, 15 May 2007)

Log Message:
-----------
Added progress implementation for the console.

Added Paths:
-----------
    libs/swing-misc/trunk/src/net/sf/japi/swing/misc/ConsoleProgress.java

Added: libs/swing-misc/trunk/src/net/sf/japi/swing/misc/ConsoleProgress.java
===================================================================
--- libs/swing-misc/trunk/src/net/sf/japi/swing/misc/ConsoleProgress.java	                        (rev 0)
+++ libs/swing-misc/trunk/src/net/sf/japi/swing/misc/ConsoleProgress.java	2007-05-15 11:25:57 UTC (rev 340)
@@ -0,0 +1,109 @@
+package net.sf.japi.swing.misc;
+
+import java.awt.Component;
+import java.io.Closeable;
+import java.io.IOException;
+import java.io.Flushable;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * ConsoleProgress is a {@link Progress} implementation for headless systems.
+ * @author <a href="mailto:ch...@ri...">Christian Hujer</a>
+ */
+public class ConsoleProgress implements Progress {
+
+    /** The destination for messages. */
+    private final Appendable out;
+
+    /** The flushable for out. */
+    private final Flushable flushOut;
+
+    /** The closeable for out. */
+    private final Closeable closeOut;
+
+    /** Current maximum. */
+    private int max;
+
+    /** Create a ConsoleProgress that uses System.out. */
+    public ConsoleProgress() {
+        this(System.out, true, false);
+    }
+
+    /** Create a ConsoleProgress that uses the specified Appendable.
+     * @param out Appendable to use
+     * @param flush Whether to flush the Appendable
+     * @param close Whether to close the Appendable
+     */
+    public ConsoleProgress(final Appendable out, final boolean flush, final boolean close) {
+        this.out  = out;
+        flushOut = flush && out instanceof Flushable ? (Flushable) out : null;
+        closeOut = close && out instanceof Closeable ? (Closeable) out : null;
+    }
+
+    /** Close the closeable. */
+    private void close() {
+        if (closeOut != null) {
+            try {
+                closeOut.close();
+            } catch (final IOException e) {
+                // ignore
+            }
+        }
+    }
+
+    /** Flush the flushable. */
+    private void flush() {
+        if (flushOut != null) {
+            try {
+                flushOut.flush();
+            } catch (final IOException e) {
+                // ignore
+            }
+        }
+    }
+
+    /** {@inheritDoc} */
+    public void finished() {
+        close();
+    }
+
+    /** {@inheritDoc} */
+    @Nullable
+    public Component getParentComponent() {
+        return null;
+    }
+
+    /** {@inheritDoc} */
+    public void setLabel(final String msg, final int max) {
+        this.max = max;
+        try {
+            out.append("  0%: ");
+            out.append(msg);
+            flush();
+            for (int i = 0; i < msg.length(); i++) {
+                out.append('\b');
+            }
+            for (int i = 0; i < "  0%: ".length(); i++) {
+                out.append('\b');
+            }
+        } catch (final IOException e) {
+            // ignore
+        }
+    }
+
+    /** {@inheritDoc} */
+    public void setValue(final int value) {
+        if (max == 0) {
+            return;
+        }
+        try {
+            final int prog = value * 100 / max;
+            out.append(String.format("%3d", prog));
+            flush();
+            out.append("\b\b\b");
+        } catch (final IOException e) {
+            // ignore
+        }
+    }
+
+} // class ConsoleProgress


Property changes on: libs/swing-misc/trunk/src/net/sf/japi/swing/misc/ConsoleProgress.java
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Name: svn:mime-type
   + text/plain
Name: svn:eol-style
   + LF


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