Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.utils.ui / src / org / simantics / utils / ui / dialogs / SafeMessageDialog.java

diff --git a/bundles/org.simantics.utils.ui/src/org/simantics/utils/ui/dialogs/SafeMessageDialog.java b/bundles/org.simantics.utils.ui/src/org/simantics/utils/ui/dialogs/SafeMessageDialog.java
new file mode 100644 (file)
index 0000000..db2f7e9
--- /dev/null
+++ b/bundles/org.simantics.utils.ui/src/org/simantics/utils/ui/dialogs/SafeMessageDialog.java
@@ -0,0 +1,71 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+/*\r
+ * Created on 16.12.2005\r
+ * @author Toni Kalajainen\r
+ */\r
+package org.simantics.utils.ui.dialogs;\r
+\r
+import org.eclipse.jface.dialogs.IDialogConstants;\r
+import org.eclipse.jface.dialogs.MessageDialog;\r
+import org.eclipse.swt.graphics.Image;\r
+import org.eclipse.swt.widgets.Display;\r
+import org.eclipse.swt.widgets.Shell;\r
+import org.simantics.utils.DataContainer;\r
+\r
+\r
+/**\r
+ * Tool for making blocking message dialogs queries from non-UI thread\r
+ * \r
+ * \r
+ */\r
+public class SafeMessageDialog {\r
+\r
+    /** Yes and No buttons */\r
+    public final static String[] YES_NO = new String[] { IDialogConstants.YES_LABEL, IDialogConstants.NO_LABEL };\r
+\r
+    public static Integer doMessageDialog(final String title, final Image image, final String message, final int type,\r
+            final String buttons[], final int defaultIndex) {\r
+        final DataContainer<Integer> result = new DataContainer<Integer>();\r
+        Runnable r = new Runnable() {\r
+            public void run() {\r
+                Shell shell = Display.getCurrent().getActiveShell();\r
+                MessageDialog dialog = new MessageDialog(shell, title, image, message, type, buttons, defaultIndex);\r
+                dialog.open();\r
+                result.set(dialog.getReturnCode());\r
+            }\r
+        };\r
+        Display display = Display.getCurrent();\r
+        if (display == null)\r
+               display = Display.getDefault();\r
+        display.syncExec(r);\r
+\r
+        if (result.get() == null)\r
+            return null;\r
+        return result.get();\r
+    }\r
+\r
+    /**\r
+     * method for asking simple yes/no question in a dialog.\r
+     * \r
+     * @param title the dialog's title, or <code>null</code> if none\r
+     * @param message the message\r
+     * @return true if user pressed OK\r
+     */\r
+    public static boolean openQuestion(String title, String message) {\r
+        Integer result = doMessageDialog(title, null, message, MessageDialog.QUESTION, YES_NO, 0);\r
+        if (result == null)\r
+            return false;\r
+        return result == 0;\r
+    }\r
+\r
+}\r