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

desktop/qa/desktop_lib/test_desktop_lib.cxx

@@ -316,6 +316,12 @@ void DesktopLOKTest::testCreateView()
     int nId1 = pDocument->m_pDocumentClass->createView(pDocument);
     CPPUNIT_ASSERT_EQUAL(2, pDocument->m_pDocumentClass->getViewsCount(pDocument));
 
+    // Test getViewIds().
+    std::vector<int> aViewIds(2);
+    CPPUNIT_ASSERT(pDocument->m_pDocumentClass->getViewIds(pDocument, aViewIds.data(), aViewIds.size()));
+    CPPUNIT_ASSERT_EQUAL(nId0, aViewIds[0]);
+    CPPUNIT_ASSERT_EQUAL(nId1, aViewIds[1]);
+
     // Make sure the created view is the active one, then switch to the old
     // one.
     CPPUNIT_ASSERT_EQUAL(nId1, pDocument->m_pDocumentClass->getView(pDocument));

desktop/source/lib/init.cxx

@@ -438,6 +438,7 @@ static void doc_destroyView(LibreOfficeKitDocument* pThis, int nId);
 static void doc_setView(LibreOfficeKitDocument* pThis, int nId);
 static int doc_getView(LibreOfficeKitDocument* pThis);
 static int doc_getViewsCount(LibreOfficeKitDocument* pThis);
+static bool doc_getViewIds(LibreOfficeKitDocument* pThis, int* pArray, size_t nSize);
 static unsigned char* doc_renderFont(LibreOfficeKitDocument* pThis,
                           const char *pFontName,
                           int* pFontWidth,
@@ -485,6 +486,7 @@ LibLODocument_Impl::LibLODocument_Impl(const uno::Reference <css::lang::XCompone
         m_pDocumentClass->setView = doc_setView;
         m_pDocumentClass->getView = doc_getView;
         m_pDocumentClass->getViewsCount = doc_getViewsCount;
+        m_pDocumentClass->getViewIds = doc_getViewIds;
 
         m_pDocumentClass->renderFont = doc_renderFont;
         m_pDocumentClass->getPartHash = doc_getPartHash;
@@ -2313,6 +2315,12 @@ static int doc_getViewsCount(LibreOfficeKitDocument* /*pThis*/)
     return SfxLokHelper::getViewsCount();
 }
 
+static bool doc_getViewIds(LibreOfficeKitDocument* /*pThis*/, int* pArray, size_t nSize)
+{
+    SolarMutexGuard aGuard;
+    return SfxLokHelper::getViewIds(pArray, nSize);
+}
+
 unsigned char* doc_renderFont(LibreOfficeKitDocument* /*pThis*/,
                     const char* pFontName,
                     int* pFontWidth,

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
 };
 

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
 };
 

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);

sfx2/source/view/lokhelper.cxx

@@ -94,6 +94,20 @@ std::size_t SfxLokHelper::getViewsCount()
     return rViewArr.size();
 }
 
+bool SfxLokHelper::getViewIds(int* pArray, size_t nSize)
+{
+    SfxViewShellArr_Impl& rViewArr = SfxGetpApp()->GetViewShells_Impl();
+    if (rViewArr.size() > nSize)
+        return false;
+
+    for (std::size_t i = 0; i < rViewArr.size(); ++i)
+    {
+        SfxViewShell* pViewShell = rViewArr[i];
+        pArray[i] = pViewShell->GetViewShellId();
+    }
+    return true;
+}
+
 void SfxLokHelper::notifyOtherView(SfxViewShell* pThisView, SfxViewShell* pOtherView, int nType, const OString& rKey, const OString& rPayload)
 {
     boost::property_tree::ptree aTree;