8029263: user's default browser can not launch after we click the button, and...

8029263: user's default browser can not launch after we click the button, and there is an IOException shown in the log text (java.io.IOException)
Reviewed-by: anthony, serb

src/solaris/classes/sun/awt/X11/XDesktopPeer.java

@@ -33,6 +33,9 @@ import java.net.URI;
 
 import java.awt.Desktop.Action;
 import java.awt.peer.DesktopPeer;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
 
 
 /**
@@ -43,6 +46,10 @@ import java.awt.peer.DesktopPeer;
  */
 public class XDesktopPeer implements DesktopPeer {
 
+    // supportedActions may be changed from native within an init() call
+    private static final List<Action> supportedActions
+            = new ArrayList<>(Arrays.asList(Action.OPEN, Action.MAIL, Action.BROWSE));
+
     private static boolean nativeLibraryLoaded = false;
     private static boolean initExecuted = false;
 
@@ -65,11 +72,11 @@ public class XDesktopPeer implements DesktopPeer {
 
     static boolean isDesktopSupported() {
         initWithLock();
-        return nativeLibraryLoaded;
+        return nativeLibraryLoaded && !supportedActions.isEmpty();
     }
 
     public boolean isSupported(Action type) {
-        return type != Action.PRINT && type != Action.EDIT;
+        return supportedActions.contains(type);
     }
 
     public void open(File file) throws IOException {

src/solaris/native/sun/awt/gtk2_interface.c

@@ -438,10 +438,76 @@ gboolean gtk2_check_version()
     }
 }
 
+#define ADD_SUPPORTED_ACTION(actionStr) \
+do { \
+    jfieldID fld_action = (*env)->GetStaticFieldID(env, cls_action, actionStr, "Ljava/awt/Desktop$Action;"); \
+    if (!(*env)->ExceptionCheck(env)) { \
+        jobject action = (*env)->GetStaticObjectField(env, cls_action, fld_action); \
+        (*env)->CallBooleanMethod(env, supportedActions, mid_arrayListAdd, action); \
+    } else { \
+        (*env)->ExceptionClear(env); \
+    } \
+} while(0);
+
+
+void update_supported_actions(JNIEnv *env) {
+    GVfs * (*fp_g_vfs_get_default) (void);
+    const gchar * const * (*fp_g_vfs_get_supported_uri_schemes) (GVfs * vfs);
+    const gchar * const * schemes = NULL;
+
+    jclass cls_action = (*env)->FindClass(env, "java/awt/Desktop$Action");
+    jclass cls_xDesktopPeer = (*env)->FindClass(env, "sun/awt/X11/XDesktopPeer");
+    jfieldID fld_supportedActions = (*env)->GetStaticFieldID(env, cls_xDesktopPeer, "supportedActions", "Ljava/util/List;");
+    jobject supportedActions = (*env)->GetStaticObjectField(env, cls_xDesktopPeer, fld_supportedActions);
+
+    jclass cls_arrayList = (*env)->FindClass(env, "java/util/ArrayList");
+    jmethodID mid_arrayListAdd = (*env)->GetMethodID(env, cls_arrayList, "add", "(Ljava/lang/Object;)Z");
+    jmethodID mid_arrayListClear = (*env)->GetMethodID(env, cls_arrayList, "clear", "()V");
+
+    (*env)->CallVoidMethod(env, supportedActions, mid_arrayListClear);
+
+    ADD_SUPPORTED_ACTION("OPEN");
+
+    /**
+     * gtk_show_uri() documentation says:
+     *
+     * > you need to install gvfs to get support for uri schemes such as http://
+     * > or ftp://, as only local files are handled by GIO itself.
+     *
+     * So OPEN action was safely added here.
+     * However, it looks like Solaris 11 have gvfs support only for 32-bit
+     * applications only by default.
+     */
+
+    fp_g_vfs_get_default = dl_symbol("g_vfs_get_default");
+    fp_g_vfs_get_supported_uri_schemes = dl_symbol("g_vfs_get_supported_uri_schemes");
+    dlerror();
+
+    if (fp_g_vfs_get_default && fp_g_vfs_get_supported_uri_schemes) {
+        GVfs * vfs = fp_g_vfs_get_default();
+        schemes = vfs ? fp_g_vfs_get_supported_uri_schemes(vfs) : NULL;
+        if (schemes) {
+            int i = 0;
+            while (schemes[i]) {
+                if (strcmp(schemes[i], "http") == 0) {
+                    ADD_SUPPORTED_ACTION("BROWSE");
+                    ADD_SUPPORTED_ACTION("MAIL");
+                    break;
+                }
+                i++;
+            }
+        }
+    } else {
+#ifdef INTERNAL_BUILD
+        fprintf(stderr, "Cannot load g_vfs_get_supported_uri_schemes\n");
+#endif /* INTERNAL_BUILD */
+    }
+
+}
 /**
  * Functions for awt_Desktop.c
  */
-gboolean gtk2_show_uri_load() {
+gboolean gtk2_show_uri_load(JNIEnv *env) {
      gboolean success = FALSE;
      dlerror();
      const char *gtk_version = fp_gtk_check_version(2, 14, 0);
@@ -464,9 +530,12 @@ gboolean gtk2_show_uri_load() {
 #ifdef INTERNAL_BUILD
              fprintf(stderr, "dlsym(gtk_show_uri) returned NULL\n");
 #endif /* INTERNAL_BUILD */
-         } else {
-             success = TRUE;
-         }
+        } else {
+#ifdef __solaris__
+            update_supported_actions(env);
+#endif
+            success = TRUE;
+        }
      }
      return success;
 }

src/solaris/native/sun/awt/gtk2_interface.h

@@ -270,6 +270,7 @@ typedef enum
 /* We define all structure pointers to be void* */
 typedef void GError;
 typedef void GMainContext;
+typedef void GVfs;
 
 typedef struct _GSList GSList;
 struct _GSList
@@ -689,7 +690,7 @@ gboolean gtk2_load(JNIEnv *env);
  * gtk2_load, so it must be invoked only after a successful gtk2_load
  * invocation
  */
-gboolean gtk2_show_uri_load();
+gboolean gtk2_show_uri_load(JNIEnv *env);
 
 /*
  * Unload the gtk2 library.  If the library is already unloaded this method has

src/solaris/native/sun/xawt/awt_Desktop.c

@@ -42,7 +42,7 @@ JNIEXPORT jboolean JNICALL Java_sun_awt_X11_XDesktopPeer_init
         return JNI_TRUE;
     }
 
-    if (gtk2_load(env) && gtk2_show_uri_load()) {
+    if (gtk2_load(env) && gtk2_show_uri_load(env)) {
         gtk_has_been_loaded = TRUE;
         return JNI_TRUE;
     } else if (gnome_load()) {

test/java/awt/Desktop/OpenByUNCPathNameTest/OpenByUNCPathNameTest.java

@@ -45,6 +45,10 @@ public class OpenByUNCPathNameTest {
             System.out.println("java.awt.Desktop is not supported on this platform.");
         } else {
             Desktop desktop = Desktop.getDesktop();
+            if (!desktop.isSupported(Desktop.Action.OPEN)) {
+                System.out.println("Action.OPEN is not supported on this platform.");
+                return;
+            }
             File file = File.createTempFile("Read Me File", ".txt");
             try {
                 // Test opening of the file with Windows local file path.