X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.workbench%2Fsrc%2Forg%2Fsimantics%2Fworkbench%2Finternal%2FApplicationUtil.java;fp=bundles%2Forg.simantics.workbench%2Fsrc%2Forg%2Fsimantics%2Fworkbench%2Finternal%2FApplicationUtil.java;h=ae0746ba17b1f9c39a5350a006cefa7ee0a8f14d;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.workbench/src/org/simantics/workbench/internal/ApplicationUtil.java b/bundles/org.simantics.workbench/src/org/simantics/workbench/internal/ApplicationUtil.java
new file mode 100644
index 000000000..ae0746ba1
--- /dev/null
+++ b/bundles/org.simantics.workbench/src/org/simantics/workbench/internal/ApplicationUtil.java
@@ -0,0 +1,71 @@
+package org.simantics.workbench.internal;
+
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import org.eclipse.jface.dialogs.MessageDialog;
+import org.simantics.db.Session;
+import org.simantics.ui.SimanticsUI;
+import org.simantics.utils.ui.ErrorLogger;
+import org.simantics.utils.ui.dialogs.SafeMessageDialog;
+
+/**
+ * @author Tuukka Lehtonen
+ */
+final class ApplicationUtil {
+
+    /**
+     * Used to make sure that the user has a choice to save the changes into the
+     * active database before closing.
+     */
+    public static boolean allowShutdown(AtomicBoolean saveAtExit) {
+        try {
+            if (hasUnsavedChanges()) {
+                String[] buttons = { "&Save", "&Don't save", "&Cancel" };
+                int result = SafeMessageDialog.doMessageDialog("Save Resources", null, "Save changes before closing ?",
+                        MessageDialog.QUESTION, buttons, 2);
+
+                switch (result) {
+                    case 0:
+                        saveAtExit.set(true);
+                        break;
+                    case 1:
+                        saveAtExit.set(false);
+                        break;
+                    case 2:
+                        return false;
+                    default:
+                        return false;
+                }
+            }
+
+            // If any errors occur during this check, just log them, but allow
+            // for the program to be closed and make sure nothing is saved,
+            // since it would probably be corrupt.
+        } catch (RuntimeException e) {
+            ErrorLogger.defaultLogError(
+                    "RuntimeException occured while querying database session for unsaved changes.", e);
+            saveAtExit.set(false);
+        } catch (Error e) {
+            ErrorLogger.defaultLogError("Error occured while querying database session for unsaved changes.", e);
+            saveAtExit.set(false);
+        }
+        return true;
+    }
+
+    public static boolean hasUnsavedChanges() {
+        Session session = SimanticsUI.peekSession();
+        if (session == null)
+            return false;
+
+        // hasChangesToSave is deprecated
+//        LifecycleSupport lfs = session.getService(LifecycleSupport.class);
+//        try {
+//            return lfs.hasChangesToSave();
+//        } catch (DatabaseException e) {
+//            ErrorLogger.defaultLogError(
+//                    "Problems encountered while checking for unsaved changes, see exception for details.", e);
+//        }
+        return false;
+    }
+
+}