src/apps/webpositive/autocompletion/AutoCompleterDefaultImpl.h

   1 /*
   2  * Copyright 2002-2006, project beam (http://sourceforge.net/projects/beam).
   3  * All rights reserved. Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Oliver Tappe <beam@hirschkaefer.de>
   7  */
   8 #ifndef _AUTO_COMPLETER_DEFAULT_IMPL_H
   9 #define _AUTO_COMPLETER_DEFAULT_IMPL_H
  10
  11 #include <ListView.h>
  12 #include <String.h>
  13
  14 #include "AutoCompleter.h"
  15
  16 class BDefaultPatternSelector : public BAutoCompleter::PatternSelector {
  17 public:
  18         virtual void                            SelectPatternBounds(const BString& text,
  19                                                                         int32 caretPos, int32* start,
  20                                                                         int32* length);
  21 };
  22
  23
  24 class BDefaultCompletionStyle : public BAutoCompleter::CompletionStyle {
  25 public:
  26                                                                 BDefaultCompletionStyle(
  27                                                                         BAutoCompleter::EditView* editView,
  28                                                                         BAutoCompleter::ChoiceModel* choiceModel,
  29                                                                         BAutoCompleter::ChoiceView* choiceView,
  30                                                                         BAutoCompleter::PatternSelector*
  31                                                                                 patternSelector);
  32         virtual                                         ~BDefaultCompletionStyle();
  33
  34         virtual bool                            Select(int32 index);
  35         virtual bool                            SelectNext(bool wrap = false);
  36         virtual bool                            SelectPrevious(bool wrap = false);
  37         virtual bool                            IsChoiceSelected() const;
  38         virtual int32                           SelectedChoiceIndex() const;
  39
  40         virtual void                            ApplyChoice(bool hideChoices = true);
  41         virtual void                            CancelChoice();
  42
  43         virtual void                            EditViewStateChanged(bool updateChoices);
  44
  45 private:
  46                         BString                         fFullEnteredText;
  47                         int32                           fSelectedIndex;
  48                         int32                           fPatternStartPos;
  49                         int32                           fPatternLength;
  50                         bool                            fIgnoreEditViewStateChanges;
  51 };
  52
  53
  54 class BDefaultChoiceView : public BAutoCompleter::ChoiceView {
  55 protected:
  56         class ListView : public BListView {
  57         public:
  58                                                                 ListView(
  59                                                                         BAutoCompleter::CompletionStyle* completer);
  60                 virtual void                    SelectionChanged();
  61                 virtual void                    MessageReceived(BMessage* msg);
  62                 virtual void                    MouseDown(BPoint point);
  63                 virtual void                    AttachedToWindow();
  64
  65         private:
  66                                 BAutoCompleter::CompletionStyle* fCompleter;
  67         };
  68
  69         class ListItem : public BListItem {
  70         public:
  71                                                                 ListItem(const BAutoCompleter::Choice* choice);
  72                 virtual void                    DrawItem(BView* owner, BRect frame,
  73                                                                         bool complete = false);
  74         private:
  75                                 BString                 fPreText;
  76                                 BString                 fMatchText;
  77                                 BString                 fPostText;
  78         };
  79
  80 public:
  81                                                                 BDefaultChoiceView();
  82         virtual                                         ~BDefaultChoiceView();
  83
  84         virtual void                            SelectChoiceAt(int32 index);
  85         virtual void                            ShowChoices(
  86                                                                         BAutoCompleter::CompletionStyle* completer);
  87         virtual void                            HideChoices();
  88         virtual bool                            ChoicesAreShown();
  89         virtual int32                           CountVisibleChoices() const;
  90
  91                                 void                    SetMaxVisibleChoices(int32 choices);
  92                                 int32                   MaxVisibleChoices() const;
  93
  94 private:
  95                         BWindow*                        fWindow;
  96                         ListView*                       fListView;
  97                         int32                           fMaxVisibleChoices;
  98 };
  99
 100 #endif // _AUTO_COMPLETER_DEFAULT_IMPL_H