--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.chromium.debug.ui/src/org/chromium/debug/ui/actions/PushChangesAction.java	Mon Jun 07 16:51:19 2010 -0700
@@ -0,0 +1,81 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.debug.ui.actions;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.chromium.debug.core.ChromiumDebugPlugin;
+import org.chromium.sdk.LiveEditExtension;
+import org.chromium.sdk.UpdatableScript;
+import org.eclipse.core.resources.IFile;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Status;
+
+/**
+ * The main action of LiveEdit feature. It gets the current state of a working file and pushes
+ * it into running V8 VM.
+ */
+public class PushChangesAction extends V8ScriptAction {
+  @Override
+  protected void execute(final FilePair filePair) {
+    UpdatableScript updatableScript =
+        LiveEditExtension.castToUpdatableScript(filePair.getVmResource().getScript());
+
+    if (updatableScript == null) {
+      throw new RuntimeException();
+    }
+
+    byte[] fileData;
+    try {
+      fileData = readFileContents(filePair.getFile());
+    } catch (IOException e) {
+      throw new RuntimeException(e);
+    } catch (CoreException e) {
+      throw new RuntimeException(e);
+    }
+
+    // We are using default charset here like usually.
+    String newSource = new String(fileData);
+
+    UpdatableScript.UpdateCallback callback = new UpdatableScript.UpdateCallback() {
+      public void success(Object report) {
+        ChromiumDebugPlugin.log(new Status(IStatus.OK, ChromiumDebugPlugin.PLUGIN_ID,
+            "Script has been successfully updated on remote: " + report)); //$NON-NLS-1$
+      }
+      public void failure(String message) {
+        ChromiumDebugPlugin.log(new Status(IStatus.ERROR, ChromiumDebugPlugin.PLUGIN_ID,
+            "Failed to change script on remote: " + message)); //$NON-NLS-1$
+      }
+    };
+
+    updatableScript.setSourceOnRemote(newSource, callback, null);
+  }
+
+
+  private static byte[] readFileContents(IFile file) throws IOException, CoreException {
+    InputStream inputStream = file.getContents();
+    try {
+      return readBytes(inputStream);
+    } finally {
+      inputStream.close();
+    }
+  }
+
+  private static byte[] readBytes(InputStream inputStream) throws IOException {
+    ByteArrayOutputStream buffer = new ByteArrayOutputStream();
+    byte[] array = new byte[1024];
+    while (true) {
+      int len = inputStream.read(array);
+      if (len == -1) {
+        break;
+      }
+      buffer.write(array, 0, len);
+    }
+    return buffer.toByteArray();
+  }
+}