iOS, move hipernate handling to LOkit interface

Hipernate means stopping LOkit but of course saving first if a
document is active

and returning means starting LOkit again.

for now the implementation is left as FIXME

Change-Id: Id9ea2b056e87caec13c1d3fe82d4623ca3901ef2

ios/LibreOfficeKit/LibreOfficeKit/LibreOfficeKit.c

@@ -57,5 +57,26 @@ int BridgeLOkit_open(const char *path)
 
 int BridgeLOkit_ClientCommand(const char *input)
 {
-  return 0;
+    return 0;
+}
+
+
+
+int BridgeLOkit_Hipernate()
+{
+    //FIXME
+    // check if document needs to be saved, to avoid data loss
+    // terminate all threads (basically terminate LOkit)
+    return 0;
 }
+
+
+
+int BridgeLOkit_LeaveHipernate()
+{
+    //FIXME
+    // restart LOkit
+    // reload document (it may have been changed by other programs, especially if iCloud
+    return 0;
+}
+

ios/LibreOfficeKit/LibreOfficeKit/LibreOfficeKit.h

@@ -14,3 +14,5 @@
 int BridgeLOkit_Init(const char *path);
 int BridgeLOkit_open(const char *path);
 int BridgeLOkit_ClientCommand(const char *input);
+int BridgeLOkit_Hipernate();
+int BridgeLOkit_LeaveHipernate();

ios/LibreOfficeLight/LibreOfficeLight/DocumentController.swift

@@ -15,6 +15,28 @@ import UIKit
 // It is a delegate class to recieve Menu events as well as file handling events
 class DocumentController: UIViewController, MenuDelegate, UIDocumentBrowserViewControllerDelegate
 {
+    // Handling of Background (hipernate)
+    // iOS is not true multitasking, only 1 app can be active (foreground) at any time,
+    // therefore apps frequently are moved to the background.
+    // background really means hipernate by terminating all threads and solely keep the
+    // data
+
+    // Moving to hipernate
+    public func Hipernate() -> Void
+    {
+        BridgeLOkit_Hipernate()
+    }
+
+
+
+    // Moving back to foreground
+    public func LeaveHipernate() -> Void
+    {
+        BridgeLOkit_LeaveHipernate()
+    }
+
+
+
     // handling of PropertiesController
     // The PropertiesController is a left sidebar, that will scroll in when activated
     // The Controller handles manipulation of properties in the document
@@ -72,17 +94,6 @@ class DocumentController: UIViewController, MenuDelegate, UIDocumentBrowserViewC
         }
     }
 
-
-
-    // Handling of Background (hipernate)
-    public func Hipernate() -> Void
-    {
-    }
-
-    public func LeaveHipernate() -> Void
-    {
-    }
-
     // var currentDocumentName : String?