///////////////////////////////////////////////////////////////////////////// // Name: lboxtest.cpp // Purpose: wxListBox sample // Author: Vadim Zeitlin // Id: $Id$ // Copyright: (c) 2000 Vadim Zeitlin // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// /* Current bugs: +1. horz scrollbar doesn't appear in listbox +2. truncating text ctrl doesn't update display +3. deleting last listbox item doesn't update display 4. text ctrl background corrupted after resize */ // ============================================================================ // declarations // ============================================================================ // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- // for compilers that support precompilation, includes "wx/wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ #pragma hdrstop #endif // for all others, include the necessary headers #ifndef WX_PRECOMP #include "wx/wx.h" #include "wx/app.h" #include "wx/frame.h" #include "wx/dcclient.h" #include "wx/button.h" #include "wx/checkbox.h" #include "wx/checklst.h" #include "wx/listbox.h" #include "wx/radiobox.h" #include "wx/radiobut.h" #include "wx/statbox.h" #include "wx/stattext.h" #include "wx/textctrl.h" #endif #include "wx/sizer.h" #ifdef __WXUNIVERSAL__ #include "wx/univ/theme.h" #endif // __WXUNIVERSAL__ // ---------------------------------------------------------------------------- // constants // ---------------------------------------------------------------------------- // control ids enum { LboxTest_Reset = 100, LboxTest_Create, LboxTest_Add, LboxTest_AddText, LboxTest_AddSeveral, LboxTest_AddMany, LboxTest_Clear, #if wxUSE_LOG LboxTest_ClearLog, #endif // wxUSE_LOG LboxTest_Change, LboxTest_ChangeText, LboxTest_Delete, LboxTest_DeleteText, LboxTest_DeleteSel, LboxTest_Listbox, LboxTest_Quit }; // ---------------------------------------------------------------------------- // our classes // ---------------------------------------------------------------------------- // Define a new application type, each program should derive a class from wxApp class LboxTestApp : public wxApp { public: // override base class virtuals // ---------------------------- // this one is called on application startup and is a good place for the app // initialization (doing it here and not in the ctor allows to have an error // return: if OnInit() returns false, the application terminates) virtual bool OnInit(); }; // Define a new frame type: this is going to be our main frame class LboxTestFrame : public wxFrame { public: // ctor(s) and dtor LboxTestFrame(const wxString& title); virtual ~LboxTestFrame(); protected: // event handlers void OnButtonReset(wxCommandEvent& event); void OnButtonCreate(wxCommandEvent& event); void OnButtonChange(wxCommandEvent& event); void OnButtonDelete(wxCommandEvent& event); void OnButtonDeleteSel(wxCommandEvent& event); void OnButtonClear(wxCommandEvent& event); #if wxUSE_LOG void OnButtonClearLog(wxCommandEvent& event); #endif // wxUSE_LOG void OnButtonAdd(wxCommandEvent& event); void OnButtonAddSeveral(wxCommandEvent& event); void OnButtonAddMany(wxCommandEvent& event); void OnButtonQuit(wxCommandEvent& event); void OnListbox(wxCommandEvent& event); void OnListboxDClick(wxCommandEvent& event); void OnListboxRDown(wxMouseEvent& event); void OnCheckOrRadioBox(wxCommandEvent& event); void OnUpdateUIAddSeveral(wxUpdateUIEvent& event); void OnUpdateUICreateButton(wxUpdateUIEvent& event); void OnUpdateUIClearButton(wxUpdateUIEvent& event); void OnUpdateUIDeleteButton(wxUpdateUIEvent& event); void OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event); // reset the listbox parameters void Reset(); // (re)create the listbox void CreateLbox(); // listbox parameters // ------------------ // the selection mode enum LboxSelection { LboxSel_Single, LboxSel_Extended, LboxSel_Multiple } m_lboxSelMode; // should it be sorted? bool m_sorted; // should it have horz scroll/vert scrollbar permanently shown? bool m_horzScroll, m_vertScrollAlways; // should the recreate button be enabled? bool m_dirty; // the controls // ------------ // the sel mode radiobox wxRadioBox *m_radioSelMode; // the checkboxes wxCheckBox *m_chkSort, *m_chkHScroll, *m_chkVScroll; // the listbox itself and the sizer it is in wxListBox *m_lbox; wxSizer *m_sizerLbox; // panel the controls such as the listbox are in wxPanel* m_panel; #if wxUSE_LOG // the listbox for logging messages wxListBox *m_lboxLog; #endif // wxUSE_LOG // the text entries for "Add/change string" and "Delete" buttons wxTextCtrl *m_textAdd, *m_textChange, *m_textDelete; private: #if wxUSE_LOG // the log target we use to redirect messages to the listbox wxLog *m_logTarget; #endif // wxUSE_LOG // any class wishing to process wxWidgets events must use this macro DECLARE_EVENT_TABLE() }; #if wxUSE_LOG // A log target which just redirects the messages to a listbox class LboxLogger : public wxLog { public: LboxLogger(wxListBox *lbox, wxLog *logOld) { m_lbox = lbox; //m_lbox->Disable(); -- looks ugly under MSW m_logOld = logOld; } virtual ~LboxLogger() { wxLog::SetActiveTarget(m_logOld); } private: // implement sink functions virtual void DoLog(wxLogLevel level, const wxChar *szString, time_t t) { // don't put trace messages into listbox or we can get into infinite // recursion if ( level == wxLOG_Trace ) { if ( m_logOld ) { // cast is needed to call protected method ((LboxLogger *)m_logOld)->DoLog(level, szString, t); } } else { wxLog::DoLog(level, szString, t); } } virtual void DoLogString(const wxChar *szString, time_t WXUNUSED(t)) { wxString msg; TimeStamp(&msg); msg += szString; #ifdef __WXUNIVERSAL__ m_lbox->AppendAndEnsureVisible(msg); #else // other ports don't have this method yet m_lbox->Append(msg); // SetFirstItem() isn't implemented in wxGTK #ifndef __WXGTK__ m_lbox->SetFirstItem(m_lbox->GetCount() - 1); #endif #endif } // the control we use wxListBox *m_lbox; // the old log target wxLog *m_logOld; }; #endif // wxUSE_LOG // ---------------------------------------------------------------------------- // misc macros // ---------------------------------------------------------------------------- IMPLEMENT_APP(LboxTestApp) // ---------------------------------------------------------------------------- // event tables // ---------------------------------------------------------------------------- BEGIN_EVENT_TABLE(LboxTestFrame, wxFrame) EVT_BUTTON(LboxTest_Reset, LboxTestFrame::OnButtonReset) EVT_BUTTON(LboxTest_Create, LboxTestFrame::OnButtonCreate) EVT_BUTTON(LboxTest_Change, LboxTestFrame::OnButtonChange) EVT_BUTTON(LboxTest_Delete, LboxTestFrame::OnButtonDelete) EVT_BUTTON(LboxTest_DeleteSel, LboxTestFrame::OnButtonDeleteSel) EVT_BUTTON(LboxTest_Clear, LboxTestFrame::OnButtonClear) #if wxUSE_LOG EVT_BUTTON(LboxTest_ClearLog, LboxTestFrame::OnButtonClearLog) #endif // wxUSE_LOG EVT_BUTTON(LboxTest_Add, LboxTestFrame::OnButtonAdd) EVT_BUTTON(LboxTest_AddSeveral, LboxTestFrame::OnButtonAddSeveral) EVT_BUTTON(LboxTest_AddMany, LboxTestFrame::OnButtonAddMany) EVT_BUTTON(LboxTest_Quit, LboxTestFrame::OnButtonQuit) EVT_TEXT_ENTER(LboxTest_AddText, LboxTestFrame::OnButtonAdd) EVT_TEXT_ENTER(LboxTest_DeleteText, LboxTestFrame::OnButtonDelete) EVT_UPDATE_UI_RANGE(LboxTest_Reset, LboxTest_Create, LboxTestFrame::OnUpdateUICreateButton) EVT_UPDATE_UI(LboxTest_AddSeveral, LboxTestFrame::OnUpdateUIAddSeveral) EVT_UPDATE_UI(LboxTest_Clear, LboxTestFrame::OnUpdateUIClearButton) EVT_UPDATE_UI(LboxTest_DeleteText, LboxTestFrame::OnUpdateUIClearButton) EVT_UPDATE_UI(LboxTest_Delete, LboxTestFrame::OnUpdateUIDeleteButton) EVT_UPDATE_UI(LboxTest_Change, LboxTestFrame::OnUpdateUIDeleteSelButton) EVT_UPDATE_UI(LboxTest_ChangeText, LboxTestFrame::OnUpdateUIDeleteSelButton) EVT_UPDATE_UI(LboxTest_DeleteSel, LboxTestFrame::OnUpdateUIDeleteSelButton) EVT_LISTBOX(LboxTest_Listbox, LboxTestFrame::OnListbox) EVT_LISTBOX_DCLICK(wxID_ANY, LboxTestFrame::OnListboxDClick) EVT_CHECKBOX(wxID_ANY, LboxTestFrame::OnCheckOrRadioBox) EVT_RADIOBOX(wxID_ANY, LboxTestFrame::OnCheckOrRadioBox) END_EVENT_TABLE() // ============================================================================ // implementation // ============================================================================ // ---------------------------------------------------------------------------- // app class // ---------------------------------------------------------------------------- bool LboxTestApp::OnInit() { wxFrame *frame = new LboxTestFrame(_T("wxListBox sample")); frame->Show(); #if wxUSE_LOG //wxLog::AddTraceMask(_T("listbox")); wxLog::AddTraceMask(_T("scrollbar")); #endif // wxUSE_LOG return true; } // ---------------------------------------------------------------------------- // top level frame class // ---------------------------------------------------------------------------- LboxTestFrame::LboxTestFrame(const wxString& title) : wxFrame(NULL, wxID_ANY, title, wxPoint(100, 100)) { // init everything m_dirty = false; m_radioSelMode = (wxRadioBox *)NULL; m_chkVScroll = m_chkHScroll = m_chkSort = (wxCheckBox *)NULL; m_lbox = (wxListBox *)NULL; #if wxUSE_LOG m_lboxLog = (wxListBox *)NULL; #endif // wxUSE_LOG m_sizerLbox = (wxSizer *)NULL; #if wxUSE_LOG m_logTarget = (wxLog *)NULL; #endif // wxUSE_LOG m_panel = new wxPanel(this, wxID_ANY); /* What we create here is a frame having 3 panes: the explanatory pane to the left allowing to set the listbox styles and recreate the control, the pane containing the listbox itself and the lower pane containing the buttons which allow to add/change/delete strings to/from it. */ wxSizer *sizerTop = new wxBoxSizer(wxVERTICAL), *sizerUp = new wxBoxSizer(wxHORIZONTAL), *sizerLeft, *sizerRight = new wxBoxSizer(wxVERTICAL); // upper left pane static const wxString modes[] = { _T("single"), _T("extended"), _T("multiple"), }; wxStaticBox *box = new wxStaticBox(m_panel, wxID_ANY, _T("&Set listbox parameters")); m_radioSelMode = new wxRadioBox(m_panel, wxID_ANY, _T("Selection &mode:"), wxDefaultPosition, wxDefaultSize, WXSIZEOF(modes), modes, 1, wxRA_SPECIFY_COLS); m_chkVScroll = new wxCheckBox(m_panel, wxID_ANY, _T("Always show &vertical scrollbar")); m_chkHScroll = new wxCheckBox(m_panel, wxID_ANY, _T("Show &horizontal scrollbar")); m_chkSort = new wxCheckBox(m_panel, wxID_ANY, _T("&Sort items")); sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL); sizerLeft->Add(m_chkVScroll, 0, wxLEFT | wxRIGHT, 5); sizerLeft->Add(m_chkHScroll, 0, wxLEFT | wxRIGHT, 5); sizerLeft->Add(m_chkSort, 0, wxLEFT | wxRIGHT, 5); sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer sizerLeft->Add(m_radioSelMode, 0, wxGROW | wxALL, 5); wxSizer *sizerBtn = new wxBoxSizer(wxHORIZONTAL); wxButton *btn = new wxButton(m_panel, LboxTest_Reset, _T("&Reset")); sizerBtn->Add(btn, 0, wxLEFT | wxRIGHT, 5); btn = new wxButton(m_panel, LboxTest_Create, _T("&Create")); sizerBtn->Add(btn, 0, wxLEFT | wxRIGHT, 5); sizerLeft->Add(sizerBtn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15); // middle pane wxStaticBox *box2 = new wxStaticBox(m_panel, wxID_ANY, _T("&Change listbox contents")); wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL); wxSizer *sizerRow = new wxBoxSizer(wxHORIZONTAL); btn = new wxButton(m_panel, LboxTest_Add, _T("&Add this string")); m_textAdd = new wxTextCtrl(m_panel, LboxTest_AddText, _T("test item 0")); sizerRow->Add(btn, 0, wxRIGHT, 5); sizerRow->Add(m_textAdd, 1, wxLEFT, 5); sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5); btn = new wxButton(m_panel, LboxTest_AddSeveral, _T("&Insert a few strings")); sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5); btn = new wxButton(m_panel, LboxTest_AddMany, _T("Add &many strings")); sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5); sizerRow = new wxBoxSizer(wxHORIZONTAL); btn = new wxButton(m_panel, LboxTest_Change, _T("C&hange current")); m_textChange = new wxTextCtrl(m_panel, LboxTest_ChangeText, wxEmptyString); sizerRow->Add(btn, 0, wxRIGHT, 5); sizerRow->Add(m_textChange, 1, wxLEFT, 5); sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5); sizerRow = new wxBoxSizer(wxHORIZONTAL); btn = new wxButton(m_panel, LboxTest_Delete, _T("&Delete this item")); m_textDelete = new wxTextCtrl(m_panel, LboxTest_DeleteText, wxEmptyString); sizerRow->Add(btn, 0, wxRIGHT, 5); sizerRow->Add(m_textDelete, 1, wxLEFT, 5); sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5); btn = new wxButton(m_panel, LboxTest_DeleteSel, _T("Delete &selection")); sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5); btn = new wxButton(m_panel, LboxTest_Clear, _T("&Clear")); sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5); // right pane sizerRight->SetMinSize(250, 0); m_sizerLbox = sizerRight; // save it to modify it later // the 3 panes panes compose the upper part of the window sizerUp->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10); sizerUp->Add(sizerMiddle, 1, wxGROW | wxALL, 10); sizerUp->Add(sizerRight, 1, wxGROW | (wxALL & ~wxRIGHT), 10); // the lower one only has the log listbox and a button to clear it #if wxUSE_LOG wxSizer *sizerDown = new wxStaticBoxSizer ( new wxStaticBox(m_panel, wxID_ANY, _T("&Log window")), wxVERTICAL ); m_lboxLog = new wxListBox(m_panel, wxID_ANY); sizerDown->Add(m_lboxLog, 1, wxGROW | wxALL, 5); #else wxSizer *sizerDown = new wxBoxSizer(wxVERTICAL); #endif // wxUSE_LOG wxBoxSizer *sizerBtns = new wxBoxSizer(wxHORIZONTAL); #if wxUSE_LOG btn = new wxButton(m_panel, LboxTest_ClearLog, _T("Clear &log")); sizerBtns->Add(btn); sizerBtns->Add(10, 0); // spacer #endif // wxUSE_LOG btn = new wxButton(m_panel, LboxTest_Quit, _T("E&xit")); sizerBtns->Add(btn); sizerDown->Add(sizerBtns, 0, wxALL | wxALIGN_RIGHT, 5); // put everything together sizerTop->Add(sizerUp, 1, wxGROW | (wxALL & ~wxBOTTOM), 10); sizerTop->Add(0, 5, 0, wxGROW); // spacer in between sizerTop->Add(sizerDown, 0, wxGROW | (wxALL & ~wxTOP), 10); // final initialization and create the listbox Reset(); CreateLbox(); m_panel->SetSizer(sizerTop); sizerTop->Fit(this); sizerTop->SetSizeHints(this); #if wxUSE_LOG // now that everything is created we can redirect the log messages to the // listbox m_logTarget = new LboxLogger(m_lboxLog, wxLog::GetActiveTarget()); wxLog::SetActiveTarget(m_logTarget); #endif // wxUSE_LOG } LboxTestFrame::~LboxTestFrame() { #if wxUSE_LOG delete m_logTarget; #endif // wxUSE_LOG } // ---------------------------------------------------------------------------- // operations // ---------------------------------------------------------------------------- void LboxTestFrame::Reset() { if ( m_radioSelMode->GetSelection() == LboxSel_Single && !m_chkSort->GetValue() && m_chkHScroll->GetValue() && !m_chkVScroll->GetValue() ) { // nothing to do return; } m_radioSelMode->SetSelection(LboxSel_Single); m_chkSort->SetValue(false); m_chkHScroll->SetValue(true); m_chkVScroll->SetValue(false); m_dirty = true; } void LboxTestFrame::CreateLbox() { int flags = 0; switch ( m_radioSelMode->GetSelection() ) { default: wxFAIL_MSG( _T("unexpected radio box selection") ); case LboxSel_Single: flags |= wxLB_SINGLE; break; case LboxSel_Extended: flags |= wxLB_EXTENDED; break; case LboxSel_Multiple: flags |= wxLB_MULTIPLE; break; } if ( m_chkVScroll->GetValue() ) flags |= wxLB_ALWAYS_SB; if ( m_chkHScroll->GetValue() ) flags |= wxLB_HSCROLL; if ( m_chkSort->GetValue() ) flags |= wxLB_SORT; wxArrayString items; if ( m_lbox ) // cache old items to restore later if listbox existed { int count = m_lbox->GetCount(); for ( int n = 0; n < count; n++ ) { items.Add(m_lbox->GetString(n)); } m_sizerLbox->Detach(m_lbox); delete m_lbox; } m_lbox = new wxListBox(m_panel, LboxTest_Listbox, wxDefaultPosition, wxDefaultSize, 0, NULL, flags); m_lbox->Set(items); m_sizerLbox->Add(m_lbox, 1, wxGROW | wxALL, 5); m_sizerLbox->Layout(); m_dirty = false; m_lbox->Connect(wxEVT_RIGHT_DOWN, wxMouseEventHandler(LboxTestFrame::OnListboxRDown), NULL, this); } // ---------------------------------------------------------------------------- // event handlers // ---------------------------------------------------------------------------- void LboxTestFrame::OnButtonQuit(wxCommandEvent& WXUNUSED(event)) { Close(); } void LboxTestFrame::OnButtonReset(wxCommandEvent& WXUNUSED(event)) { Reset(); } void LboxTestFrame::OnButtonCreate(wxCommandEvent& WXUNUSED(event)) { CreateLbox(); } void LboxTestFrame::OnButtonChange(wxCommandEvent& WXUNUSED(event)) { wxArrayInt selections; int count = m_lbox->GetSelections(selections); wxString s = m_textChange->GetValue(); for ( int n = 0; n < count; n++ ) { m_lbox->SetString(selections[n], s); } } void LboxTestFrame::OnButtonDelete(wxCommandEvent& WXUNUSED(event)) { unsigned long n; if ( !m_textDelete->GetValue().ToULong(&n) || (n >= (unsigned)m_lbox->GetCount()) ) { return; } m_lbox->Delete(n); } void LboxTestFrame::OnButtonDeleteSel(wxCommandEvent& WXUNUSED(event)) { wxArrayInt selections; int n = m_lbox->GetSelections(selections); while ( n > 0 ) { m_lbox->Delete(selections[--n]); } } void LboxTestFrame::OnButtonClear(wxCommandEvent& WXUNUSED(event)) { m_lbox->Clear(); } #if wxUSE_LOG void LboxTestFrame::OnButtonClearLog(wxCommandEvent& WXUNUSED(event)) { m_lboxLog->Clear(); } #endif // wxUSE_LOG void LboxTestFrame::OnButtonAdd(wxCommandEvent& WXUNUSED(event)) { static size_t s_item = 0; wxString s = m_textAdd->GetValue(); if ( !m_textAdd->IsModified() ) { // update the default string m_textAdd->SetValue(wxString::Format(_T("test item %u"), ++s_item)); } m_lbox->Append(s); } void LboxTestFrame::OnButtonAddMany(wxCommandEvent& WXUNUSED(event)) { // "many" means 1000 here for ( size_t n = 0; n < 1000; n++ ) { m_lbox->Append(wxString::Format(_T("item #%u"), n)); } } void LboxTestFrame::OnButtonAddSeveral(wxCommandEvent& WXUNUSED(event)) { wxArrayString items; items.Add(_T("First")); items.Add(_T("another one")); items.Add(_T("and the last (very very very very very very very very very very long) one")); m_lbox->InsertItems(items, 0); } void LboxTestFrame::OnUpdateUICreateButton(wxUpdateUIEvent& event) { event.Enable(m_dirty); } void LboxTestFrame::OnUpdateUIDeleteButton(wxUpdateUIEvent& event) { unsigned long n; event.Enable(m_textDelete->GetValue().ToULong(&n) && (n < (unsigned)m_lbox->GetCount())); } void LboxTestFrame::OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event) { wxArrayInt selections; event.Enable(m_lbox->GetSelections(selections) != 0); } void LboxTestFrame::OnUpdateUIClearButton(wxUpdateUIEvent& event) { event.Enable(m_lbox->GetCount() != 0); } void LboxTestFrame::OnUpdateUIAddSeveral(wxUpdateUIEvent& event) { event.Enable(!(m_lbox->GetWindowStyle() & wxLB_SORT)); } void LboxTestFrame::OnListbox(wxCommandEvent& event) { int sel = event.GetInt(); m_textDelete->SetValue(wxString::Format(_T("%d"), sel)); wxLogMessage(_T("Listbox item %d selected"), sel); } void LboxTestFrame::OnListboxDClick(wxCommandEvent& event) { int sel = event.GetInt(); wxLogMessage(_T("Listbox item %d double clicked"), sel); } void LboxTestFrame::OnListboxRDown(wxMouseEvent& event) { int item = m_lbox->HitTest(event.GetPosition()); if ( item != wxNOT_FOUND ) wxLogMessage(_T("Listbox item %d right clicked"), item); else wxLogMessage(_T("Listbox right clicked but no item clicked upon")); event.Skip(); } void LboxTestFrame::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event)) { m_dirty = true; }