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19 #ifndef INCLUDED_SVX_DIAGRAMDATAINTERFACE_HXX
20 #define INCLUDED_SVX_DIAGRAMDATAINTERFACE_HXX
21 
22 #include <rtl/ustring.h>
23 #include <sal/types.h>
24 
25 #include <utility>
26 #include <vector>
27 
28 /// Interface class to access diagram data for UI
29 class SAL_NO_VTABLE SAL_DLLPUBLIC_RTTI DiagramDataInterface
30 {
31 public:
32     // get text representation of data tree
33     virtual OUString getString() const = 0;
34 
35     // get children of provided data node
36     // use empty string for top-level nodes
37     // returns vector of (id, text)
38     virtual std::vector<std::pair<OUString, OUString>>
39     getChildren(const OUString& rParentId) const = 0;
40 
41     // add new top-level node to data model, returns its id
42     virtual OUString addNode(const OUString& rText) = 0;
43 
44     virtual bool removeNode(const OUString& rNodeId) = 0;
45 
46 protected:
~DiagramDataInterface()47     ~DiagramDataInterface() throw() {}
48 };
49 
50 #endif // INCLUDED_SVX_DIAGRAMDATAINTERFACE_HXX
51 
52 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
53