sfx2: add SfxLokHelper::getViewIds

and also expose it in the LOK API. This way clients don't have to keep
track of what views they created / destroyed, they can also get an up to
date list with this method.

Change-Id: Ibaee42c545803e04a31e7c13ab6ec370b99465c4
(cherry picked from commit dcc92a7cb5aa1faa711c8da7f7d8ecee0a192c25)

3 files changed, 23 insertions, 0 deletions

diff --git a/include/LibreOfficeKit/LibreOfficeKit.h b/include/LibreOfficeKit/LibreOfficeKit.h
index a0ed81947280..c97655f94f8e 100644
--- a/include/LibreOfficeKit/LibreOfficeKit.h
+++ b/include/LibreOfficeKit/LibreOfficeKit.h
@@ -244,6 +244,11 @@ struct _LibreOfficeKitDocumentClass
                            const int nTileWidth,
                            const int nTileHeight);
 
+    /// @see lok::Document::getViewIds().
+    bool (*getViewIds) (LibreOfficeKitDocument* pThis,
+                       int* pArray,
+                       size_t nSize);
+
 #endif // defined LOK_USE_UNSTABLE_API || defined LIBO_INTERNAL_ONLY
 };
 
diff --git a/include/LibreOfficeKit/LibreOfficeKit.hxx b/include/LibreOfficeKit/LibreOfficeKit.hxx
index 9e185b6e9f37..0c52843b4bb6 100644
--- a/include/LibreOfficeKit/LibreOfficeKit.hxx
+++ b/include/LibreOfficeKit/LibreOfficeKit.hxx
@@ -435,6 +435,22 @@ public:
                                             nTileWidth, nTileHeight);
     }
 
+    /**
+     * Returns the viewID for each existing view. Since viewIDs are not reused,
+     * viewIDs are not the same as the index of the view in the view array over
+     * time. Use getViewsCount() to know the minimal nSize that's large enough.
+     *
+     * @param pArray the array to write the viewIDs into
+     * @param nSize the size of pArray
+     * @returns true if pArray was large enough and result is written, false
+     * otherwise.
+     */
+    inline bool getViewIds(int* pArray,
+                           size_t nSize)
+    {
+        return mpDoc->pClass->getViewIds(mpDoc, pArray, nSize);
+    }
+
 #endif // defined LOK_USE_UNSTABLE_API || defined LIBO_INTERNAL_ONLY
 };
 
diff --git a/include/sfx2/lokhelper.hxx b/include/sfx2/lokhelper.hxx
index 7460377fd3ba..3179ee203c0f 100644
--- a/include/sfx2/lokhelper.hxx
+++ b/include/sfx2/lokhelper.hxx
@@ -29,6 +29,8 @@ public:
     static int getView(SfxViewShell* pViewShell = nullptr);
     /// Get the number of views of the current object shell.
     static std::size_t getViewsCount();
+    /// Get viewIds of all existing views.
+    static bool getViewIds(int* pArray, size_t nSize);
 
     /// Invoke the LOK callback of all views except pThisView, with a payload of rKey-rPayload.
     static void notifyOtherViews(SfxViewShell* pThisView, int nType, const OString& rKey, const OString& rPayload);