X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a236aa2058ccf3d36e9cafc20fa7375080c4be50..cd15bcaf50ead53ccf9d50965312f0dc754affb4:/samples/widgets/listbox.cpp?ds=sidebyside diff --git a/samples/widgets/listbox.cpp b/samples/widgets/listbox.cpp index b92ae08e7d..9278c6306b 100644 --- a/samples/widgets/listbox.cpp +++ b/samples/widgets/listbox.cpp @@ -6,7 +6,7 @@ // Created: 27.03.01 // Id: $Id$ // Copyright: (c) 2001 Vadim Zeitlin -// License: wxWindows license +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// // ============================================================================ @@ -68,6 +68,8 @@ enum ListboxPage_DeleteText, ListboxPage_DeleteSel, ListboxPage_Listbox, + ListboxPage_EnsureVisible, + ListboxPage_EnsureVisibleText, ListboxPage_ContainerTests }; @@ -91,6 +93,7 @@ protected: // event handlers void OnButtonReset(wxCommandEvent& event); void OnButtonChange(wxCommandEvent& event); + void OnButtonEnsureVisible(wxCommandEvent& event); void OnButtonDelete(wxCommandEvent& event); void OnButtonDeleteSel(wxCommandEvent& event); void OnButtonClear(wxCommandEvent& event); @@ -106,6 +109,7 @@ protected: void OnUpdateUIAddSeveral(wxUpdateUIEvent& event); void OnUpdateUIClearButton(wxUpdateUIEvent& event); + void OnUpdateUIEnsureVisibleButton(wxUpdateUIEvent& event); void OnUpdateUIDeleteButton(wxUpdateUIEvent& event); void OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event); void OnUpdateUIResetButton(wxUpdateUIEvent& event); @@ -116,6 +120,11 @@ protected: // (re)create the listbox void CreateLbox(); + // read the value of a listbox item index from the given control, return + // false if it's invalid + bool GetValidIndexFromText(const wxTextCtrl *text, int *n = NULL) const; + + // listbox parameters // ------------------ @@ -160,6 +169,7 @@ protected: // the text entries for "Add/change string" and "Delete" buttons wxTextCtrl *m_textAdd, *m_textChange, + *m_textEnsureVisible, *m_textDelete; private: @@ -176,6 +186,7 @@ BEGIN_EVENT_TABLE(ListboxWidgetsPage, WidgetsPage) EVT_BUTTON(ListboxPage_Change, ListboxWidgetsPage::OnButtonChange) EVT_BUTTON(ListboxPage_Delete, ListboxWidgetsPage::OnButtonDelete) EVT_BUTTON(ListboxPage_DeleteSel, ListboxWidgetsPage::OnButtonDeleteSel) + EVT_BUTTON(ListboxPage_EnsureVisible, ListboxWidgetsPage::OnButtonEnsureVisible) EVT_BUTTON(ListboxPage_Clear, ListboxWidgetsPage::OnButtonClear) EVT_BUTTON(ListboxPage_Add, ListboxWidgetsPage::OnButtonAdd) EVT_BUTTON(ListboxPage_AddSeveral, ListboxWidgetsPage::OnButtonAddSeveral) @@ -184,6 +195,7 @@ BEGIN_EVENT_TABLE(ListboxWidgetsPage, WidgetsPage) EVT_TEXT_ENTER(ListboxPage_AddText, ListboxWidgetsPage::OnButtonAdd) EVT_TEXT_ENTER(ListboxPage_DeleteText, ListboxWidgetsPage::OnButtonDelete) + EVT_TEXT_ENTER(ListboxPage_EnsureVisibleText, ListboxWidgetsPage::OnButtonEnsureVisible) EVT_UPDATE_UI(ListboxPage_Reset, ListboxWidgetsPage::OnUpdateUIResetButton) EVT_UPDATE_UI(ListboxPage_AddSeveral, ListboxWidgetsPage::OnUpdateUIAddSeveral) @@ -193,6 +205,7 @@ BEGIN_EVENT_TABLE(ListboxWidgetsPage, WidgetsPage) EVT_UPDATE_UI(ListboxPage_Change, ListboxWidgetsPage::OnUpdateUIDeleteSelButton) EVT_UPDATE_UI(ListboxPage_ChangeText, ListboxWidgetsPage::OnUpdateUIDeleteSelButton) EVT_UPDATE_UI(ListboxPage_DeleteSel, ListboxWidgetsPage::OnUpdateUIDeleteSelButton) + EVT_UPDATE_UI(ListboxPage_EnsureVisible, ListboxWidgetsPage::OnUpdateUIEnsureVisibleButton) EVT_LISTBOX(ListboxPage_Listbox, ListboxWidgetsPage::OnListbox) EVT_LISTBOX_DCLICK(ListboxPage_Listbox, ListboxWidgetsPage::OnListboxDClick) @@ -212,7 +225,7 @@ END_EVENT_TABLE() #define FAMILY_CTRLS NATIVE_CTRLS #endif -IMPLEMENT_WIDGETS_PAGE(ListboxWidgetsPage, _T("Listbox"), +IMPLEMENT_WIDGETS_PAGE(ListboxWidgetsPage, wxT("Listbox"), FAMILY_CTRLS | WITH_ITEMS_CTRLS ); @@ -246,17 +259,17 @@ void ListboxWidgetsPage::CreateContent() // left pane wxStaticBox *box = new wxStaticBox(this, wxID_ANY, - _T("&Set listbox parameters")); + wxT("&Set listbox parameters")); wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL); static const wxString modes[] = { - _T("single"), - _T("extended"), - _T("multiple"), + wxT("single"), + wxT("extended"), + wxT("multiple"), }; - m_radioSelMode = new wxRadioBox(this, wxID_ANY, _T("Selection &mode:"), + m_radioSelMode = new wxRadioBox(this, wxID_ANY, wxT("Selection &mode:"), wxDefaultPosition, wxDefaultSize, WXSIZEOF(modes), modes, 1, wxRA_SPECIFY_COLS); @@ -264,62 +277,69 @@ void ListboxWidgetsPage::CreateContent() m_chkVScroll = CreateCheckBoxAndAddToSizer ( sizerLeft, - _T("Always show &vertical scrollbar") + wxT("Always show &vertical scrollbar") ); m_chkHScroll = CreateCheckBoxAndAddToSizer ( sizerLeft, - _T("Show &horizontal scrollbar") + wxT("Show &horizontal scrollbar") ); - m_chkCheck = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Check list box")); - m_chkSort = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Sort items")); - m_chkOwnerDraw = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Owner drawn")); + m_chkCheck = CreateCheckBoxAndAddToSizer(sizerLeft, wxT("&Check list box")); + m_chkSort = CreateCheckBoxAndAddToSizer(sizerLeft, wxT("&Sort items")); + m_chkOwnerDraw = CreateCheckBoxAndAddToSizer(sizerLeft, wxT("&Owner drawn")); sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer sizerLeft->Add(m_radioSelMode, 0, wxGROW | wxALL, 5); - wxButton *btn = new wxButton(this, ListboxPage_Reset, _T("&Reset")); + wxButton *btn = new wxButton(this, ListboxPage_Reset, wxT("&Reset")); sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15); // middle pane wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY, - _T("&Change listbox contents")); + wxT("&Change listbox contents")); wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL); wxSizer *sizerRow = new wxBoxSizer(wxHORIZONTAL); - btn = new wxButton(this, ListboxPage_Add, _T("&Add this string")); - m_textAdd = new wxTextCtrl(this, ListboxPage_AddText, _T("test item 0")); + btn = new wxButton(this, ListboxPage_Add, wxT("&Add this string")); + m_textAdd = new wxTextCtrl(this, ListboxPage_AddText, wxT("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(this, ListboxPage_AddSeveral, _T("&Insert a few strings")); + btn = new wxButton(this, ListboxPage_AddSeveral, wxT("&Insert a few strings")); sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5); - btn = new wxButton(this, ListboxPage_AddMany, _T("Add &many strings")); + btn = new wxButton(this, ListboxPage_AddMany, wxT("Add &many strings")); sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5); sizerRow = new wxBoxSizer(wxHORIZONTAL); - btn = new wxButton(this, ListboxPage_Change, _T("C&hange current")); + btn = new wxButton(this, ListboxPage_Change, wxT("C&hange current")); m_textChange = new wxTextCtrl(this, ListboxPage_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(this, ListboxPage_Delete, _T("&Delete this item")); + btn = new wxButton(this, ListboxPage_EnsureVisible, wxT("Make item &visible")); + m_textEnsureVisible = new wxTextCtrl(this, ListboxPage_EnsureVisibleText, wxEmptyString); + sizerRow->Add(btn, 0, wxRIGHT, 5); + sizerRow->Add(m_textEnsureVisible, 1, wxLEFT, 5); + sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5); + + sizerRow = new wxBoxSizer(wxHORIZONTAL); + btn = new wxButton(this, ListboxPage_Delete, wxT("&Delete this item")); m_textDelete = new wxTextCtrl(this, ListboxPage_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(this, ListboxPage_DeleteSel, _T("Delete &selection")); + btn = new wxButton(this, ListboxPage_DeleteSel, wxT("Delete &selection")); sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5); - btn = new wxButton(this, ListboxPage_Clear, _T("&Clear")); + btn = new wxButton(this, ListboxPage_Clear, wxT("&Clear")); sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5); - btn = new wxButton(this, ListboxPage_ContainerTests, _T("Run &tests")); + btn = new wxButton(this, ListboxPage_ContainerTests, wxT("Run &tests")); sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5); // right pane @@ -363,7 +383,7 @@ void ListboxWidgetsPage::CreateLbox() switch ( m_radioSelMode->GetSelection() ) { default: - wxFAIL_MSG( _T("unexpected radio box selection") ); + wxFAIL_MSG( wxT("unexpected radio box selection") ); case LboxSel_Single: flags |= wxLB_SINGLE; break; case LboxSel_Extended: flags |= wxLB_EXTENDED; break; @@ -414,6 +434,33 @@ void ListboxWidgetsPage::CreateLbox() m_sizerLbox->Layout(); } +// ---------------------------------------------------------------------------- +// miscellaneous helpers +// ---------------------------------------------------------------------------- + +bool +ListboxWidgetsPage::GetValidIndexFromText(const wxTextCtrl *text, int *n) const +{ + unsigned long idx; + if ( !text->GetValue().ToULong(&idx) || (idx >= m_lbox->GetCount()) ) + { + // don't give the warning if we're just testing but do give it if we + // want to retrieve the value as this is only done in answer to a user + // action + if ( n ) + { + wxLogWarning("Invalid index \"%s\"", text->GetValue()); + } + + return false; + } + + if ( n ) + *n = idx; + + return true; +} + // ---------------------------------------------------------------------------- // event handlers // ---------------------------------------------------------------------------- @@ -436,11 +483,21 @@ void ListboxWidgetsPage::OnButtonChange(wxCommandEvent& WXUNUSED(event)) } } +void ListboxWidgetsPage::OnButtonEnsureVisible(wxCommandEvent& WXUNUSED(event)) +{ + int n; + if ( !GetValidIndexFromText(m_textEnsureVisible, &n) ) + { + return; + } + + m_lbox->EnsureVisible(n); +} + void ListboxWidgetsPage::OnButtonDelete(wxCommandEvent& WXUNUSED(event)) { - unsigned long n; - if ( !m_textDelete->GetValue().ToULong(&n) || - (n >= (unsigned)m_lbox->GetCount()) ) + int n; + if ( !GetValidIndexFromText(m_textDelete, &n) ) { return; } @@ -471,7 +528,7 @@ void ListboxWidgetsPage::OnButtonAdd(wxCommandEvent& WXUNUSED(event)) if ( !m_textAdd->IsModified() ) { // update the default string - m_textAdd->SetValue(wxString::Format(_T("test item %u"), ++s_item)); + m_textAdd->SetValue(wxString::Format(wxT("test item %u"), ++s_item)); } m_lbox->Append(s); @@ -482,16 +539,16 @@ void ListboxWidgetsPage::OnButtonAddMany(wxCommandEvent& WXUNUSED(event)) // "many" means 1000 here for ( unsigned int n = 0; n < 1000; n++ ) { - m_lbox->Append(wxString::Format(_T("item #%u"), n)); + m_lbox->Append(wxString::Format(wxT("item #%u"), n)); } } void ListboxWidgetsPage::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")); + items.Add(wxT("First")); + items.Add(wxT("another one")); + items.Add(wxT("and the last (very very very very very very very very very very long) one")); m_lbox->InsertItems(items, 0); } @@ -504,11 +561,14 @@ void ListboxWidgetsPage::OnUpdateUIResetButton(wxUpdateUIEvent& event) m_chkVScroll->GetValue() ); } +void ListboxWidgetsPage::OnUpdateUIEnsureVisibleButton(wxUpdateUIEvent& event) +{ + event.Enable(GetValidIndexFromText(m_textEnsureVisible)); +} + void ListboxWidgetsPage::OnUpdateUIDeleteButton(wxUpdateUIEvent& event) { - unsigned long n; - event.Enable(m_textDelete->GetValue().ToULong(&n) && - (n < (unsigned)m_lbox->GetCount())); + event.Enable(GetValidIndexFromText(m_textDelete)); } void ListboxWidgetsPage::OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event) @@ -530,22 +590,26 @@ void ListboxWidgetsPage::OnUpdateUIAddSeveral(wxUpdateUIEvent& event) void ListboxWidgetsPage::OnListbox(wxCommandEvent& event) { long sel = event.GetSelection(); - m_textDelete->SetValue(wxString::Format(_T("%ld"), sel)); + m_textDelete->SetValue(wxString::Format(wxT("%ld"), sel)); if (event.IsSelection()) - wxLogMessage(_T("Listbox item %ld selected"), sel); + { + wxLogMessage(wxT("Listbox item %ld selected"), sel); + } else - wxLogMessage(_T("Listbox item %ld deselected"), sel); + { + wxLogMessage(wxT("Listbox item %ld deselected"), sel); + } } void ListboxWidgetsPage::OnListboxDClick(wxCommandEvent& event) { - wxLogMessage( _T("Listbox item %d double clicked"), event.GetInt() ); + wxLogMessage( wxT("Listbox item %d double clicked"), event.GetInt() ); } void ListboxWidgetsPage::OnCheckListbox(wxCommandEvent& event) { - wxLogMessage( _T("Listbox item %d toggled"), event.GetInt() ); + wxLogMessage( wxT("Listbox item %d toggled"), event.GetInt() ); } void ListboxWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))