Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 186 insertions, 0 deletions

diff --git a/odk/examples/DevelopersGuide/OfficeDev/DesktopEnvironment/NativeView.java b/odk/examples/DevelopersGuide/OfficeDev/DesktopEnvironment/NativeView.java
new file mode 100644
index 000000000..273290e55
--- /dev/null
+++ b/odk/examples/DevelopersGuide/OfficeDev/DesktopEnvironment/NativeView.java
@@ -0,0 +1,186 @@
+/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ *  The Contents of this file are made available subject to the terms of
+ *  the BSD license.
+ *
+ *  Copyright 2000, 2010 Oracle and/or its affiliates.
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions
+ *  are met:
+ *  1. Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *  2. 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.
+ *  3. Neither the name of Sun Microsystems, 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.
+ *
+ *************************************************************************/
+
+// __________ Imports __________
+
+import java.awt.*;
+
+// __________ Implementation __________
+
+/**
+ * Class to pass the system window handle to the OpenOffice.org toolkit.
+ * It use special JNI methods to get the system handle of used java window.
+ *
+ * Attention!
+ * Use JNI functions on already visible canvas objects only!
+ * Otherwise they can make some trouble.
+ *
+ */
+
+public class NativeView extends java.awt.Canvas
+{
+
+
+    /**
+     * ctor
+     * Does nothing really.
+     * We can use our JNI mechanism for an already visible
+     * canvas only. So we override the method for showing ("setVisible()")
+     * and make our initialization there. But we try to show an empty clean
+     * window till there.
+     */
+    public NativeView()
+    {
+        maHandle = null;
+        maSystem = 0;
+        this.setBackground(Color.white);
+    }
+
+
+
+    /**
+     * Override this method to make necessary initializations here.
+     * (e.g. get the window handle and necessary system information)
+     *
+     * Why here?
+     * Because the handle seems to be available for already visible windows
+     * only. So it's the best place to get it. Special helper method
+     * can be called more than ones - but call native code one times only
+     * and safe the handle and the system type on our members maHandle/maSystem!
+     */
+    @Override
+    public void setVisible(boolean bState)
+    {
+        getHWND();
+    }
+
+
+
+    /**
+     * to guarantee right resize handling inside a swing container
+     * (e.g. JSplitPane) we must provide some information about our
+     * preferred/minimum and maximum size.
+     */
+    @Override
+    public Dimension getPreferredSize()
+    {
+        return new Dimension(500,300);
+    }
+
+    @Override
+    public Dimension getMaximumSize()
+    {
+        return new Dimension(1024,768);
+    }
+
+    @Override
+    public Dimension getMinimumSize()
+    {
+        return new Dimension(100,100);
+    }
+
+
+
+    /**
+     * Override paint routine to show provide against
+     * repaint errors if no office view is really plugged
+     * into this canvas.
+     * If handle is present - we shouldn't paint anything further.
+     * May the remote window is already plugged. In such case we
+     * shouldn't paint it over.
+     */
+    @Override
+    public void paint(Graphics aGraphic)
+    {
+        if(maHandle==null)
+        {
+            Dimension aSize = getSize();
+            aGraphic.clearRect(0,0,aSize.width,aSize.height);
+        }
+    }
+
+
+
+    /**
+     * JNI interface of this class
+     * These two methods are implemented by using JNI mechanismen.
+     * The will be used to get the platform dependent window handle
+     * of a java awt canvas. This handle can be used to create an office
+     * window as direct child of it. So it's possible to plug Office
+     * windows in a java UI container.
+     *
+     * Note:
+     * Native code for Windows registers a special function pointer to handle
+     * window messages... But if it doesn't check for an already-registered
+     * instance of this handler it will do it twice and produce a stack overflow
+     * because such method calls itself in a never-ending loop...
+     * So we try to use the JNI code one time only and save already-obtained
+     * information inside this class.
+     */
+    public  native int  getNativeWindowSystemType();
+    private native long getNativeWindow(); // private! => use getHWND() with cache mechanism!
+
+    public Integer getHWND()
+    {
+        if(maHandle==null)
+        {
+            maHandle = Integer.valueOf((int)getNativeWindow());
+            maSystem = getNativeWindowSystemType();
+        }
+        return maHandle;
+    }
+
+
+
+    /**
+     * for using of the JNI methods it's necessary to load
+     * system library which exports it.
+     */
+    static
+    {
+        System.loadLibrary("nativeview");
+    }
+
+
+
+    /**
+     * @member  maHandle    system window handle
+     * @member  maSystem    info about currently used platform
+     */
+    public Integer maHandle ;
+    public int     maSystem ;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */