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ITextWalkerSelectionUtils.h
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23 
24 #ifndef __TextWalkerSelectionUtils__
25 #define __TextWalkerSelectionUtils__
26 
27 #include "FindChangeID.h"
28 
29 class ITextModel;
30 class ITextWalker;
31 
36 class ITextWalkerSelectionUtils : public IPMUnknown
37 {
38  public:
39  enum { kDefaultIID = IID_ITEXTWALKERSELECTIONUTILS };
40 
50  virtual bool16 SelectText( UIDRef &textStory, TextIndex nStart, int32 nnCount ) = 0;
51 
55  virtual void InitTextWalkerTerminator() = 0;
56 
60  virtual void TerminateTextWalkerTerminator() = 0;
61 
65  virtual void SaveSelectionsSnapshot() = 0; //SpellPanelObserver::Update
66 
70  virtual void RestoreSelectionsSnapshot() = 0; //SpellPanelObserver::Update
71 
75  virtual void ClearSelectionsSnapshot() = 0; //TextWalkerTerminator::DoHalt, TextWalkerSelectionUtils::SwitchToTextSelection
76 
82  virtual void RetainLastWindow() = 0;
83 
87  virtual void EnterWalkerSelections_CriticalSection() = 0;
88 
92  virtual void ExitWalkerSelections_CriticalSection () = 0;
93 
97  virtual void SwitchToTextSelection() = 0; //FindChangeService::ProcessFindChangeCommand, FindPanelObserver::Update
98 
99 };
100 
104 class TextWalkerSelections_CriticalSection
105 {
106  public:
107  TextWalkerSelections_CriticalSection(ITextWalkerSelectionUtils *pUtils):
108  fUtils(nil)
109  {
110  if (pUtils)
111  {
112  fUtils = pUtils;
113  pUtils->AddRef();
114  pUtils->EnterWalkerSelections_CriticalSection();
115  }
116  }
117 
118  ~TextWalkerSelections_CriticalSection()
119  {
120  if (fUtils)
121  {
122  fUtils->ExitWalkerSelections_CriticalSection();
123  fUtils->Release();
124  }
125  }
126  private:
127  ITextWalkerSelectionUtils *fUtils;
128 };
129 #endif
130