tdf#96317: Add API for copy/paste from/to the widget

Change-Id: Iac869ddb65cbdd2227f96d047d83159ca7819f11
Reviewed-on: https://gerrit.libreoffice.org/20534
Reviewed-by: David Tardon <dtardon@redhat.com>
Tested-by: David Tardon <dtardon@redhat.com>
(cherry picked from commit 7d7fad258dfde500c5ee99b5f1691172724383bd)

3 files changed, 64 insertions, 6 deletions

diff --git a/include/LibreOfficeKit/LibreOfficeKitGtk.h b/include/LibreOfficeKit/LibreOfficeKitGtk.h
index 1b03e4633547..903a74256ffa 100644
--- a/include/LibreOfficeKit/LibreOfficeKitGtk.h
+++ b/include/LibreOfficeKit/LibreOfficeKitGtk.h
@@ -235,6 +235,35 @@ void                           lok_doc_view_highlight_all          (LOKDocView*
                                                                     const gchar* pText);
 
 /**
+ * lok_doc_view_copy_selection:
+ * @pDocView: The #LOKDocView instance
+ * @pMimeType: suggests the return format, for example text/plain;charset=utf-8
+ * @pUsedMimeType: (out): output parameter to inform about the determined format
+ * (suggested or plain text).
+ *
+ * Returns: Selected text. The caller must free the returned buffer after use.
+ */
+gchar*                          lok_doc_view_copy_selection        (LOKDocView* pDocView,
+                                                                    const gchar* pMimeType,
+                                                                    gchar** pUsedMimeType);
+
+/**
+ * lok_doc_view_paste:
+ * @pDocView: The #LOKDocView instance
+ * @pMimeType: format of pData, for example text/plain;charset=utf-8
+ * @pData: the data to be pasted
+ * @nSize: length of data to be pasted
+ *
+ * Pastes the content at the current cursor position
+ *
+ * Returns: if pData was pasted successfully.
+ */
+gboolean                        lok_doc_view_paste                 (LOKDocView* pDocView,
+                                                                    const gchar* pMimeType,
+                                                                    const gchar* pData,
+                                                                    gsize nSize);
+
+/**
  * lok_doc_view_pixel_to_twip:
  * @pDocView: The #LOKDocView instance
  * @fInput: The value in pixels to convert to twips
diff --git a/libreofficekit/qa/gtktiledviewer/gtktiledviewer.cxx b/libreofficekit/qa/gtktiledviewer/gtktiledviewer.cxx
index ac04833ab0ff..b4dbe16f0599 100644
--- a/libreofficekit/qa/gtktiledviewer/gtktiledviewer.cxx
+++ b/libreofficekit/qa/gtktiledviewer/gtktiledviewer.cxx
@@ -548,9 +548,8 @@ static void doCopy(GtkWidget* pButton, gpointer /*pItem*/)
 {
     TiledWindow& rWindow = lcl_getTiledWindow(pButton);
     LOKDocView* pLOKDocView = LOK_DOC_VIEW(rWindow.m_pDocView);
-    LibreOfficeKitDocument* pDocument = lok_doc_view_get_document(pLOKDocView);
     char* pUsedFormat = nullptr;
-    char* pSelection = pDocument->pClass->getTextSelection(pDocument, "text/html", &pUsedFormat);
+    char* pSelection = lok_doc_view_copy_selection(pLOKDocView, "text/html", &pUsedFormat);
 
     GtkClipboard* pClipboard = gtk_clipboard_get_for_display(gtk_widget_get_display(rWindow.m_pDocView), GDK_SELECTION_CLIPBOARD);
     std::string aUsedFormat(pUsedFormat);
@@ -567,7 +566,6 @@ static void doPaste(GtkWidget* pButton, gpointer /*pItem*/)
 {
     TiledWindow& rWindow = lcl_getTiledWindow(pButton);
     LOKDocView* pLOKDocView = LOK_DOC_VIEW(rWindow.m_pDocView);
-    LibreOfficeKitDocument* pDocument = lok_doc_view_get_document(pLOKDocView);
 
     GtkClipboard* pClipboard = gtk_clipboard_get_for_display(gtk_widget_get_display(rWindow.m_pDocView), GDK_SELECTION_CLIPBOARD);
 
@@ -591,7 +589,7 @@ static void doPaste(GtkWidget* pButton, gpointer /*pItem*/)
         GtkSelectionData* pSelectionData = gtk_clipboard_wait_for_contents(pClipboard, *oTarget);
         gint nLength;
         const guchar* pData = gtk_selection_data_get_data_with_length(pSelectionData, &nLength);
-        bool bSuccess = pDocument->pClass->paste(pDocument, "text/html", reinterpret_cast<const char*>(pData), nLength);
+        bool bSuccess = lok_doc_view_paste(pLOKDocView, "text/html", reinterpret_cast<const char*>(pData), nLength);
         gtk_selection_data_free(pSelectionData);
         if (bSuccess)
             return;
@@ -599,7 +597,7 @@ static void doPaste(GtkWidget* pButton, gpointer /*pItem*/)
 
     gchar* pText = gtk_clipboard_wait_for_text(pClipboard);
     if (pText)
-        pDocument->pClass->paste(pDocument, "text/plain;charset=utf-8", pText, strlen(pText));
+        lok_doc_view_paste(pLOKDocView, "text/plain;charset=utf-8", pText, strlen(pText));
 }
 
 /// Click handler for the search next button.
diff --git a/libreofficekit/source/gtk/lokdocview.cxx b/libreofficekit/source/gtk/lokdocview.cxx
index f734baaf00f3..d7a72cd26778 100644
--- a/libreofficekit/source/gtk/lokdocview.cxx
+++ b/libreofficekit/source/gtk/lokdocview.cxx
@@ -344,7 +344,7 @@ doSearch(LOKDocView* pDocView, const char* pText, bool bBackwards, bool highligh
     cairo_region_get_rectangle(cairoVisRegion, 0, &cairoVisRect);
     x = pixelToTwip (cairoVisRect.x, priv->m_fZoom);
     y = pixelToTwip (cairoVisRect.y, priv->m_fZoom);
-    
+
     aTree.put(boost::property_tree::ptree::path_type("SearchItem.SearchString/type", '/'), "string");
     aTree.put(boost::property_tree::ptree::path_type("SearchItem.SearchString/value", '/'), pText);
     aTree.put(boost::property_tree::ptree::path_type("SearchItem.Backward/type", '/'), "boolean");
@@ -2669,6 +2669,37 @@ lok_doc_view_highlight_all (LOKDocView* pDocView,
     doSearch(pDocView, pText, false, true);
 }
 
+SAL_DLLPUBLIC_EXPORT gchar*
+lok_doc_view_copy_selection (LOKDocView* pDocView,
+                             const gchar* pMimeType,
+                             gchar** pUsedMimeType)
+{
+    LibreOfficeKitDocument* pDocument = lok_doc_view_get_document(pDocView);
+    return pDocument->pClass->getTextSelection(pDocument, pMimeType, pUsedMimeType);
+}
+
+SAL_DLLPUBLIC_EXPORT gboolean
+lok_doc_view_paste (LOKDocView* pDocView,
+                    const gchar* pMimeType,
+                    const gchar* pData,
+                    gsize nSize)
+{
+    LOKDocViewPrivate& priv = getPrivate(pDocView);
+    LibreOfficeKitDocument* pDocument = priv->m_pDocument;
+    gboolean ret = 0;
+
+    if (!priv->m_bEdit)
+    {
+        g_info ("ignoring paste in view-only mode");
+        return ret;
+    }
+
+    if (pData)
+        ret = pDocument->pClass->paste(pDocument, pMimeType, pData, nSize);
+
+    return ret;
+}
+
 SAL_DLLPUBLIC_EXPORT float
 lok_doc_view_pixel_to_twip (LOKDocView* pDocView, float fInput)
 {