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Implement dynamic auto-completion for wxGTK

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Make completion using custom wxTextCompleter work in wxGTK too.

Closes #18061.
This commit is contained in:
AliKet
2018-01-26 23:43:33 +01:00
committed by Vadim Zeitlin
parent 9b51ef82af
commit 18983cf538
3 changed files with 356 additions and 23 deletions
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38
samples/widgets/widgets.cpp
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@@ -46,6 +46,7 @@
#include "wx/sizer.h"
#include "wx/colordlg.h"
#include "wx/fontdlg.h"
#include "wx/numdlg.h"
#include "wx/textdlg.h"
#include "wx/imaglist.h"
#include "wx/wupdlock.h"
@@ -108,6 +109,7 @@ enum
TextEntry_AutoCompleteFilenames,
TextEntry_AutoCompleteDirectories,
TextEntry_AutoCompleteCustom,
TextEntry_AutoCompleteKeyLength,
TextEntry_SetHint,
TextEntry_End
@@ -188,6 +190,7 @@ protected:
void OnAutoCompleteFilenames(wxCommandEvent& event);
void OnAutoCompleteDirectories(wxCommandEvent& event);
void OnAutoCompleteCustom(wxCommandEvent& event);
void OnAutoCompleteKeyLength(wxCommandEvent& event);
void OnSetHint(wxCommandEvent& event);
@@ -218,6 +221,9 @@ private:
// the book containing the test pages
WidgetsBookCtrl *m_book;
//
int m_prefixMinLength;
// any class wishing to process wxWidgets events must use this macro
wxDECLARE_EVENT_TABLE();
};
@@ -317,6 +323,7 @@ wxBEGIN_EVENT_TABLE(WidgetsFrame, wxFrame)
EVT_MENU(TextEntry_AutoCompleteFilenames, WidgetsFrame::OnAutoCompleteFilenames)
EVT_MENU(TextEntry_AutoCompleteDirectories, WidgetsFrame::OnAutoCompleteDirectories)
EVT_MENU(TextEntry_AutoCompleteCustom, WidgetsFrame::OnAutoCompleteCustom)
EVT_MENU(TextEntry_AutoCompleteKeyLength, WidgetsFrame::OnAutoCompleteKeyLength)
EVT_MENU(TextEntry_SetHint, WidgetsFrame::OnSetHint)
@@ -386,6 +393,8 @@ WidgetsFrame::WidgetsFrame(const wxString& title)
#endif // USE_LOG
m_book = NULL;
m_prefixMinLength = 1;
#if wxUSE_MENUS
// create the menubar
wxMenuBar *mbar = new wxMenuBar;
@@ -444,6 +453,8 @@ WidgetsFrame::WidgetsFrame(const wxString& title)
menuTextEntry->AppendRadioItem(TextEntry_AutoCompleteCustom,
wxT("&Custom auto-completion"));
menuTextEntry->AppendSeparator();
menuTextEntry->Append(TextEntry_AutoCompleteKeyLength,
wxT("&Minimum key length for auto-completion"));
menuTextEntry->Append(TextEntry_SetHint, "Set help &hint");
mbar->Append(menuTextEntry, wxT("&Text"));
@@ -1038,6 +1049,8 @@ void WidgetsFrame::OnAutoCompleteCustom(wxCommandEvent& WXUNUSED(event))
class CustomTextCompleter : public wxTextCompleterSimple
{
public:
CustomTextCompleter( int length ) : m_minLength( length ) {}
virtual void GetCompletions(const wxString& prefix, wxArrayString& res) wxOVERRIDE
{
// This is used for illustrative purposes only and shows how many
@@ -1066,7 +1079,10 @@ void WidgetsFrame::OnAutoCompleteCustom(wxCommandEvent& WXUNUSED(event))
// Normally it doesn't make sense to complete empty control, there
// are too many choices and listing them all wouldn't be helpful.
if ( prefix.empty() )
// Or if we know in advance that a prefix with one or two characters
// would still results in too many choices too.
if ( prefix.empty() ||
prefix.length() < static_cast<size_t>(m_minLength) )
return;
// The only valid strings start with 3 digits so check for their
@@ -1117,9 +1133,11 @@ void WidgetsFrame::OnAutoCompleteCustom(wxCommandEvent& WXUNUSED(event))
res.push_back(prefix + c);
}
}
int m_minLength;
};
if ( entry->AutoComplete(new CustomTextCompleter) )
if ( entry->AutoComplete( new CustomTextCompleter( m_prefixMinLength ) ) )
{
wxLogMessage("Enabled custom auto completer for \"NNN XX\" items "
"(where N is a digit and X is a letter).");
@@ -1130,6 +1148,22 @@ void WidgetsFrame::OnAutoCompleteCustom(wxCommandEvent& WXUNUSED(event))
}
}
void WidgetsFrame::OnAutoCompleteKeyLength(wxCommandEvent& WXUNUSED(event))
{
const wxString message = "The auto-completion is triggered if and only if\n"
"the length of the search key (prefix) is at least [LENGTH].\n"
"Hint: negative values disable auto-completion.";
const wxString prompt = "Enter the minimum key length:";
const wxString caption = "Minimum key length";
m_prefixMinLength = wxGetNumberFromUser(message, prompt, caption, 1, -1, 100, this);
wxCommandEvent theEvent(wxEVT_MENU, TextEntry_AutoCompleteCustom);
ProcessEventLocally(theEvent);
wxLogMessage("The minimum key length for autocomplete is : %d.", m_prefixMinLength);
}
void WidgetsFrame::OnSetHint(wxCommandEvent& WXUNUSED(event))
{
wxTextEntryBase *entry = CurrentPage()->GetTextEntry();