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#ifndef MOZC_WIN32_TIP_TIP_UI_ELEMENT_DELEGATE_H_
#define MOZC_WIN32_TIP_TIP_UI_ELEMENT_DELEGATE_H_

#include <Windows.h>
#include <msctf.h>

#include "base/port.h"

struct ITfContext;

namespace mozc {
namespace win32 {
namespace tsf {

class TipTextService;

class TipUiElementDelegate {
 public:
  TipUiElementDelegate();
  virtual ~TipUiElementDelegate();

  virtual bool IsObservable() const = 0;

  // The ITfUIElement interface methods
  virtual HRESULT GetDescription(BSTR *description) = 0;
  virtual HRESULT GetGUID(GUID *guid) = 0;
  virtual HRESULT Show(BOOL show) = 0;
  virtual HRESULT IsShown(BOOL *show) = 0;

  // The ITfCandidateListUIElement interface methods
  virtual HRESULT GetUpdatedFlags(DWORD *flags) = 0;
  virtual HRESULT GetDocumentMgr(ITfDocumentMgr **document_manager) = 0;
  virtual HRESULT GetCount(UINT *count) = 0;
  virtual HRESULT GetSelection(UINT *index) = 0;
  virtual HRESULT GetString(UINT index, BSTR *text) = 0;
  virtual HRESULT GetPageIndex(UINT *index, UINT size, UINT *page_count) = 0;
  virtual HRESULT SetPageIndex(UINT *index, UINT page_count) = 0;
  virtual HRESULT GetCurrentPage(UINT *current_page) = 0;

  // The ITfCandidateListUIElementBehavior interface methods
  virtual HRESULT SetSelection(UINT index) = 0;
  virtual HRESULT Finalize() = 0;
  virtual HRESULT Abort() = 0;

  // The ITfToolTipUIElement interface methods
  virtual HRESULT GetString(BSTR *text) = 0;

 private:
  DISALLOW_COPY_AND_ASSIGN(TipUiElementDelegate);
};

class TipUiElementDelegateFactory {
 public:
  enum ElementType {
    kConventionalUnobservableSuggestWindow,
    kConventionalObservableSuggestWindow,
    kConventionalCandidateWindow,
    kConventionalIndicatorWindow,
    kImmersiveCandidateWindow,
    kImmersiveIndicatorWindow,
  };

  static TipUiElementDelegate *Create(
      TipTextService *text_service, ITfContext *context, ElementType type);

 private:
  DISALLOW_IMPLICIT_CONSTRUCTORS(TipUiElementDelegateFactory);
};

}  // namespace tsf
}  // namespace win32
}  // namespace mozc

#endif  // MOZC_WIN32_TIP_TIP_UI_ELEMENT_DELEGATE_H_