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diff --git a/webkit/api/public/WebWidgetClient.h b/webkit/api/public/WebWidgetClient.h
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+/*
+ * Copyright (C) 2009 Google Inc. All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * 
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef WebWidgetClient_h
+#define WebWidgetClient_h
+
+#error "This header file is still a work in progress; do not include!"
+
+#include "WebCommon.h"
+#include "WebNavigationPolicy.h"
+
+namespace WebKit {
+    class WebWidget;
+    struct WebCursorInfo;
+    struct WebPluginGeometry;
+    struct WebRect;
+    struct WebScreenInfo;
+
+    class WebWidgetClient {
+    public:
+        // Called when a region of the WebWidget needs to be re-painted.
+        virtual void didInvalidateRect(WebWidget*, const WebRect&) = 0;
+
+        // Called when a region of the WebWidget, given by clipRect, should be
+        // scrolled by the specified dx and dy amounts.
+        virtual void didScrollRect(WebWidget*, int dx, int dy, const WebRect& clipRect) = 0;
+
+        // Called when a plugin is moved relative to its containing window.
+        // This typically happens as a result of scrolling the page.
+        virtual void didMovePlugin(WebWidget*, const WebPluginGeometry&) = 0;
+
+        // Called when the widget acquires or loses focus, respectively.
+        virtual void didFocus(WebWidget*) = 0;
+        virtual void didBlur(WebWidget*) = 0;
+
+        // Called when the cursor for the widget changes.
+        virtual void didChangeCursor(WebWidget*, const WebCursorInfo&) = 0;
+
+        // Called when the widget should be closed.  WebWidget::close() should
+        // be called asynchronously as a result of this notification.
+        virtual void closeWidgetSoon(WebWidget*) = 0;
+
+        // Called to show the widget according to the given policy.
+        virtual void show(WebWidget*, WebNavigationPolicy) = 0;
+
+        // Called to block execution of the current thread until the widget is
+        // closed.
+        virtual void runModal(WebWidget*) = 0;
+
+        // Called to get/set the position of the widget in screen coordinates.
+        virtual WebRect windowRect(WebWidget*) = 0;
+        virtual void setWindowRect(WebWidget*, const WebRect&) = 0;
+
+        // Called to get the position of the resizer rect in window coordinates.
+        virtual WebRect windowResizerRect(WebWidget*) = 0;
+
+        // Called to get the position of the root window containing the widget
+        // in screen coordinates.
+        virtual WebRect rootWindowRect(WebWidget*) = 0;
+
+        // Called to query information about the screen where this widget is
+        // displayed.
+        virtual WebScreenInfo screenInfo(WebWidget*) = 0;
+    };
+
+} // namespace WebKit
+
+#endif