Swing を使用して Web ブラウザーを実装しようとしています。以下にコードを示します。
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.Insets;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import chrriis.dj.nativeswing.swtimpl.NativeInterface;
import chrriis.dj.nativeswing.swtimpl.components.JWebBrowser;
public class WebPageDisplay extends JPanel{
public WebPageDisplay() {
super(new BorderLayout());
try{
NativeInterface.open();
JPanel webBrowserPanel = new JPanel(new BorderLayout());
final JWebBrowser webBrowser = new JWebBrowser();
webBrowser.setBarsVisible(false);
webBrowser.setStatusBarVisible(true);
webBrowserPanel.add(webBrowser, BorderLayout.CENTER);
add(webBrowserPanel, BorderLayout.CENTER);
webBrowser.navigate("www.google.com);
JScrollPane scrollPane = new JScrollPane();
Dimension preferredSize = scrollPane.getPreferredSize();
preferredSize.height += 20;
scrollPane.setPreferredSize(preferredSize);
add(scrollPane,new GridBagConstraints(0, 2, 2, 1, 1.0, 1.0, GridBagConstraints.CENTER,
GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0));
}catch(Exception e){
e.printStackTrace();
}
}
public static void main(String[] args){
WebPageDisplay display = new WebPageDisplay();
}
}
私は例外を下回っています。
On Mac, "NativeInterface.initialize()"/"NativeInterface.open()" should not be called after AWT static initializers have run, otherwise there can be all sorts of side effects (non-functional modal dialogs, etc.). Generally, the problem is when the "main(String[])" method is located inside an AWT component subclass and the fix is to move that main method to a standalone class. The problematic class here is "WebPageDisplay"
***WARNING: Display must be created on main thread due to Cocoa restrictions.
2012-09-17 22:48:04.943 java[248:407] _createMenuRef called with existing principal MenuRef already associated with menu
2012-09-17 22:48:05.134 java[248:407] (
0 CoreFoundation 0x00007fff96568286 __exceptionPreprocess + 198
1 libobjc.A.dylib 0x00007fff9244dd5e objc_exception_throw + 43
2 CoreFoundation 0x00007fff965680ba +[NSException raise:format:arguments:] + 106
3 CoreFoundation 0x00007fff96568044 +[NSException raise:format:] + 116
4 AppKit 0x00007fff8fea7597 -[NSCarbonMenuImpl _createMenuRef] + 64
5 AppKit 0x00007fff8fea6e82 -[NSCarbonMenuImpl _instantiateCarbonMenu] + 148
6 AppKit 0x00007fff8fe7bb43 -[NSApplication finishLaunching] + 878
7 libawt.jnilib 0x0000000106a6a157 -[NSApplicationAWT finishLaunching] + 641
8 libswt-pi-cocoa-3730.jnilib 0x00000001080f9eb2 Java_org_eclipse_swt_internal_cocoa_OS_objc_1msgSendSuper__Lorg_eclipse_swt_internal_cocoa_objc_1super_2J + 89
9 ??? 0x0000000102abdd6e 0x0 + 4339785070
)
java.lang.IllegalStateException: This call must happen in the AWT Event Dispatch Thread! Please refer to http://java.sun.com/docs/books/tutorial/uiswing/concurrency/index.html and http://java.sun.com/javase/6/docs/api/javax/swing/SwingUtilities.html#invokeLater(java.lang.Runnable)
at chrriis.dj.nativeswing.swtimpl.core.MessagingInterface.checkUIThread(MessagingInterface.java:161)
at chrriis.dj.nativeswing.swtimpl.core.SWTNativeInterface.checkUIThread(SWTNativeInterface.java:475)
at chrriis.dj.nativeswing.swtimpl.core.SWTNativeComponent.runSync(SWTNativeComponent.java:184)
at chrriis.dj.nativeswing.swtimpl.components.core.NativeWebBrowser.navigate(NativeWebBrowser.java:728)
at chrriis.dj.nativeswing.swtimpl.components.JWebBrowser.navigate(JWebBrowser.java:315)
at chrriis.dj.nativeswing.swtimpl.components.JWebBrowser.navigate(JWebBrowser.java:305)
at WebPageDisplay.<init>(WebPageDisplay.java:31)
at WebPageDisplay.main(WebPageDisplay.java:54)
クラスパスで以下のjarを使用しています。
DJNativeSwing-SWT.jar
DJNativeSwing.jar
swt-3.7M7-cocoa-macosx-x86_64.jar