1 files changed, 128 insertions, 0 deletions
diff --git a/com/trolltech/research/qtjambiawtbridge/QWidgetHost.java b/com/trolltech/research/qtjambiawtbridge/QWidgetHost.java
new file mode 100644
index 0000000..421fdb7
--- /dev/null
+++ b/com/trolltech/research/qtjambiawtbridge/QWidgetHost.java
@@ -0,0 +1,128 @@
+package com.trolltech.research.qtjambiawtbridge;
+
+import java.awt.*;
+import java.awt.event.FocusAdapter;
+import java.awt.event.FocusEvent;
+
+import com.trolltech.qt.core.QSize;
+import com.trolltech.qt.core.Qt;
+import com.trolltech.qt.gui.QApplication;
+import com.trolltech.qt.gui.QWidget;
+
+public class QWidgetHost extends Canvas {
+	private static final long serialVersionUID = 1L;
+           
+    private void focusQt(final boolean backwards) {                                                
+        QApplication.invokeAndWait(new Runnable() {
+            public void run() {                                                           
+                QWidget startWidget = backwards ? QtJambiAwtBridge.previousInFocusChain(QWidgetHost.this.containedWidget) 
+                                                : QWidgetHost.this.containedWidget.nextInFocusChain();
+                QWidget w = startWidget;
+                while (w.focusPolicy() != Qt.FocusPolicy.TabFocus 
+                       && w.focusPolicy() != Qt.FocusPolicy.StrongFocus) {
+                    w = backwards ? QtJambiAwtBridge.previousInFocusChain(w) : w.nextInFocusChain();
+                    
+                    if (w == startWidget)
+                        break;
+                }
+                
+                if (w.focusPolicy() == Qt.FocusPolicy.TabFocus 
+                    || w.focusPolicy() == Qt.FocusPolicy.StrongFocus) {
+                    KeyboardFocusManager.getCurrentKeyboardFocusManager().clearGlobalFocusOwner();
+                    w.window().activateWindow();                                                                                   
+                    w.window().setAttribute(Qt.WidgetAttribute.WA_KeyboardFocusChange, true);                                                        
+                    w.setFocus(backwards ? Qt.FocusReason.BacktabFocusReason : Qt.FocusReason.TabFocusReason);
+                    w.update();
+                }
+            }
+        });
+    }
+    
+	/**
+	 * Constructs a binding layer between AWT and a QWidget. 
+     * 
+	 * @param containedWidget This widget will become a child of the QWidgetHost on the first AWT paint event.
+	 */
+	public QWidgetHost(QWidget containedWidget) {
+		QApplication.setQuitOnLastWindowClosed(false);
+        setFocusable(true);
+
+        childWidget = containedWidget;
+        sizeHint = new QSize();
+        minimumSizeHint = new QSize();
+                                       
+        addFocusListener(new FocusAdapter() {
+            @Override 
+            public void focusGained(FocusEvent e) {                
+                if (e.getOppositeComponent() == null) {
+                    return ;
+                }
+                
+                Container focusCycleRoot = getFocusCycleRootAncestor();
+                boolean backwards =  (e.getOppositeComponent() == focusCycleRoot.getFocusTraversalPolicy().getComponentAfter(focusCycleRoot, QWidgetHost.this));
+                focusQt(backwards);
+            }
+                            
+        });
+    }
+
+    private QWidget childWidget;
+    private QWidgetWrapper containedWidget;
+
+    @Override
+    public void paint(Graphics g) {
+        if (containedWidget == null) {
+            setVisible(false);
+            QApplication.invokeAndWait(new Runnable() {
+                public void run() {
+                    containedWidget = new QWidgetWrapper(childWidget, QWidgetHost.this);
+                    sizeHint = containedWidget.sizeHint();
+                    minimumSizeHint = containedWidget.minimumSizeHint();
+                }
+            });
+            setVisible(true);
+        }
+
+        super.paint(g);
+    }
+
+    @Override
+	public void setBounds(final int x, final int y, final int width, final int height) {
+        if (containedWidget != null) {
+            QApplication.invokeAndWait(new Runnable() {
+                public void run() {
+                    containedWidget.move(0, 0);
+                    containedWidget.resize(width, height);
+                }
+            });
+        }
+
+        super.setBounds(x, y, width, height);
+	}
+	
+	@Override
+	public Dimension getPreferredSize() {        
+		if (containedWidget != null) {
+			QApplication.invokeAndWait(new Runnable() {
+				public void run() {
+					sizeHint = containedWidget.sizeHint();
+				}
+			});
+		} 
+		return new Dimension(sizeHint.width(), sizeHint.height());
+	}
+    QSize sizeHint;
+        	
+	@Override
+	public Dimension getMinimumSize() {
+		if (containedWidget != null) {
+			QApplication.invokeAndWait(new Runnable() {
+				public void run() {
+					minimumSizeHint = containedWidget.minimumSizeHint();
+				}
+			});
+		} 
+		return new Dimension(minimumSizeHint.width(), minimumSizeHint.height());
+	}
+	private QSize minimumSizeHint;
+}