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wxWidgets/samples/widgets/combobox.cpp
Vadim Zeitlin 243dbf1a50 Insert() patch from John Labenski 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@20564 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2003-05-09 12:58:28 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Program: wxWindows Widgets Sample
// Name: combobox.cpp
// Purpose: Part of the widgets sample showing wxComboBox
// Author: Vadim Zeitlin
// Created: 27.03.01
// Id: $Id$
// Copyright: (c) 2001 Vadim Zeitlin
// License: wxWindows license
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
// for compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#if wxUSE_COMBOBOX
// for all others, include the necessary headers
#ifndef WX_PRECOMP
#include "wx/log.h"
#include "wx/bitmap.h"
#include "wx/button.h"
#include "wx/checkbox.h"
#include "wx/combobox.h"
#include "wx/radiobox.h"
#include "wx/statbox.h"
#include "wx/textctrl.h"
#endif
#include "wx/sizer.h"
#include "widgets.h"
#if 1
#include "icons/combobox.xpm"
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
// control ids
enum
{
ComboPage_Reset = 100,
ComboPage_CurText,
ComboPage_Insert,
ComboPage_InsertText,
ComboPage_Add,
ComboPage_AddText,
ComboPage_AddSeveral,
ComboPage_AddMany,
ComboPage_Clear,
ComboPage_Change,
ComboPage_ChangeText,
ComboPage_Delete,
ComboPage_DeleteText,
ComboPage_DeleteSel,
ComboPage_Combo
};
// kinds of comboboxes
enum
{
ComboKind_Default,
ComboKind_Simple,
ComboKind_DropDown
};
// ----------------------------------------------------------------------------
// ComboboxWidgetsPage
// ----------------------------------------------------------------------------
class ComboboxWidgetsPage : public WidgetsPage
{
public:
ComboboxWidgetsPage(wxNotebook *notebook, wxImageList *imaglist);
protected:
// event handlers
void OnButtonReset(wxCommandEvent& event);
void OnButtonChange(wxCommandEvent& event);
void OnButtonDelete(wxCommandEvent& event);
void OnButtonDeleteSel(wxCommandEvent& event);
void OnButtonClear(wxCommandEvent& event);
void OnButtonInsert(wxCommandEvent &event);
void OnButtonAdd(wxCommandEvent& event);
void OnButtonAddSeveral(wxCommandEvent& event);
void OnButtonAddMany(wxCommandEvent& event);
void OnComboBox(wxCommandEvent& event);
void OnComboText(wxCommandEvent& event);
void OnCheckOrRadioBox(wxCommandEvent& event);
void OnUpdateUICurText(wxUpdateUIEvent& event);
void OnUpdateUIInsert(wxUpdateUIEvent& event);
void OnUpdateUIAddSeveral(wxUpdateUIEvent& event);
void OnUpdateUIClearButton(wxUpdateUIEvent& event);
void OnUpdateUIDeleteButton(wxUpdateUIEvent& event);
void OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event);
void OnUpdateUIResetButton(wxUpdateUIEvent& event);
// reset the combobox parameters
void Reset();
// (re)create the combobox
void CreateCombo();
// the controls
// ------------
// the sel mode radiobox
wxRadioBox *m_radioKind;
// the checkboxes for styles
wxCheckBox *m_chkSort,
*m_chkReadonly;
// the combobox itself and the sizer it is in
wxComboBox *m_combobox;
wxSizer *m_sizerCombo;
// the text entries for "Add/change string" and "Delete" buttons
wxTextCtrl *m_textInsert,
*m_textAdd,
*m_textChange,
*m_textDelete;
private:
DECLARE_EVENT_TABLE()
DECLARE_WIDGETS_PAGE(ComboboxWidgetsPage)
};
// ----------------------------------------------------------------------------
// event tables
// ----------------------------------------------------------------------------
BEGIN_EVENT_TABLE(ComboboxWidgetsPage, WidgetsPage)
EVT_BUTTON(ComboPage_Reset, ComboboxWidgetsPage::OnButtonReset)
EVT_BUTTON(ComboPage_Change, ComboboxWidgetsPage::OnButtonChange)
EVT_BUTTON(ComboPage_Delete, ComboboxWidgetsPage::OnButtonDelete)
EVT_BUTTON(ComboPage_DeleteSel, ComboboxWidgetsPage::OnButtonDeleteSel)
EVT_BUTTON(ComboPage_Clear, ComboboxWidgetsPage::OnButtonClear)
EVT_BUTTON(ComboPage_Insert, ComboboxWidgetsPage::OnButtonInsert)
EVT_BUTTON(ComboPage_Add, ComboboxWidgetsPage::OnButtonAdd)
EVT_BUTTON(ComboPage_AddSeveral, ComboboxWidgetsPage::OnButtonAddSeveral)
EVT_BUTTON(ComboPage_AddMany, ComboboxWidgetsPage::OnButtonAddMany)
EVT_TEXT_ENTER(ComboPage_InsertText, ComboboxWidgetsPage::OnButtonInsert)
EVT_TEXT_ENTER(ComboPage_AddText, ComboboxWidgetsPage::OnButtonAdd)
EVT_TEXT_ENTER(ComboPage_DeleteText, ComboboxWidgetsPage::OnButtonDelete)
EVT_UPDATE_UI(ComboPage_CurText, ComboboxWidgetsPage::OnUpdateUICurText)
EVT_UPDATE_UI(ComboPage_Reset, ComboboxWidgetsPage::OnUpdateUIResetButton)
EVT_UPDATE_UI(ComboPage_Insert, ComboboxWidgetsPage::OnUpdateUIInsert)
EVT_UPDATE_UI(ComboPage_AddSeveral, ComboboxWidgetsPage::OnUpdateUIAddSeveral)
EVT_UPDATE_UI(ComboPage_Clear, ComboboxWidgetsPage::OnUpdateUIClearButton)
EVT_UPDATE_UI(ComboPage_DeleteText, ComboboxWidgetsPage::OnUpdateUIClearButton)
EVT_UPDATE_UI(ComboPage_Delete, ComboboxWidgetsPage::OnUpdateUIDeleteButton)
EVT_UPDATE_UI(ComboPage_Change, ComboboxWidgetsPage::OnUpdateUIDeleteSelButton)
EVT_UPDATE_UI(ComboPage_ChangeText, ComboboxWidgetsPage::OnUpdateUIDeleteSelButton)
EVT_UPDATE_UI(ComboPage_DeleteSel, ComboboxWidgetsPage::OnUpdateUIDeleteSelButton)
EVT_COMBOBOX(ComboPage_Combo, ComboboxWidgetsPage::OnComboBox)
EVT_TEXT(ComboPage_Combo, ComboboxWidgetsPage::OnComboText)
EVT_TEXT_ENTER(ComboPage_Combo, ComboboxWidgetsPage::OnComboText)
EVT_CHECKBOX(-1, ComboboxWidgetsPage::OnCheckOrRadioBox)
EVT_RADIOBOX(-1, ComboboxWidgetsPage::OnCheckOrRadioBox)
END_EVENT_TABLE()
// ============================================================================
// implementation
// ============================================================================
IMPLEMENT_WIDGETS_PAGE(ComboboxWidgetsPage, _T("Combobox"));
ComboboxWidgetsPage::ComboboxWidgetsPage(wxNotebook *notebook,
wxImageList *imaglist)
: WidgetsPage(notebook)
{
// init everything
m_chkSort =
m_chkReadonly = (wxCheckBox *)NULL;
m_combobox = (wxComboBox *)NULL;
m_sizerCombo = (wxSizer *)NULL;
imaglist->Add(wxBitmap(combobox_xpm));
/*
What we create here is a frame having 3 panes: style pane is the
leftmost one, in the middle the pane with buttons allowing to perform
miscellaneous combobox operations and the pane containing the combobox
itself to the right
*/
wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
// left pane
wxStaticBox *box = new wxStaticBox(this, -1, _T("&Set style"));
// should be in sync with ComboKind_XXX values
static const wxString kinds[] =
{
_T("default"),
_T("simple"),
_T("drop down"),
};
m_radioKind = new wxRadioBox(this, -1, _T("Combobox &kind:"),
wxDefaultPosition, wxDefaultSize,
WXSIZEOF(kinds), kinds,
1, wxRA_SPECIFY_COLS);
wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL);
m_chkSort = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Sort items"));
m_chkReadonly = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Read only"));
sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
sizerLeft->Add(m_radioKind, 0, wxGROW | wxALL, 5);
wxButton *btn = new wxButton(this, ComboPage_Reset, _T("&Reset"));
sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
// middle pane
wxStaticBox *box2 = new wxStaticBox(this, -1, _T("&Change combobox contents"));
wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
wxSizer *sizerRow;
wxTextCtrl *text;
sizerRow = CreateSizerWithTextAndLabel(_T("Current selection"),
ComboPage_CurText,
&text);
text->SetEditable(FALSE);
sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
sizerRow = CreateSizerWithTextAndButton(ComboPage_Insert,
_T("&Insert this string"),
ComboPage_InsertText,
&m_textInsert);
sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
sizerRow = CreateSizerWithTextAndButton(ComboPage_Add,
_T("&Add this string"),
ComboPage_AddText,
&m_textAdd);
sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
btn = new wxButton(this, ComboPage_AddSeveral, _T("&Append a few strings"));
sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
btn = new wxButton(this, ComboPage_AddMany, _T("Append &many strings"));
sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
sizerRow = CreateSizerWithTextAndButton(ComboPage_Change,
_T("C&hange current"),
ComboPage_ChangeText,
&m_textChange);
sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
sizerRow = CreateSizerWithTextAndButton(ComboPage_Delete,
_T("&Delete this item"),
ComboPage_DeleteText,
&m_textDelete);
sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
btn = new wxButton(this, ComboPage_DeleteSel, _T("Delete &selection"));
sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
btn = new wxButton(this, ComboPage_Clear, _T("&Clear"));
sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
// right pane
wxSizer *sizerRight = new wxBoxSizer(wxVERTICAL);
m_combobox = new wxComboBox(this, ComboPage_Combo, _T(""),
wxDefaultPosition, wxDefaultSize,
0, NULL,
0);
sizerRight->Add(m_combobox, 1, wxGROW | wxALL, 5);
sizerRight->SetMinSize(150, 0);
m_sizerCombo = sizerRight; // save it to modify it later
// the 3 panes panes compose the window
sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
sizerTop->Add(sizerMiddle, 1, wxGROW | wxALL, 10);
sizerTop->Add(sizerRight, 1, wxGROW | (wxALL & ~wxRIGHT), 10);
// final initializations
Reset();
SetAutoLayout(TRUE);
SetSizer(sizerTop);
sizerTop->Fit(this);
}
// ----------------------------------------------------------------------------
// operations
// ----------------------------------------------------------------------------
void ComboboxWidgetsPage::Reset()
{
m_chkSort->SetValue(FALSE);
m_chkReadonly->SetValue(FALSE);
}
void ComboboxWidgetsPage::CreateCombo()
{
int flags = 0;
if ( m_chkSort->GetValue() )
flags |= wxCB_SORT;
if ( m_chkReadonly->GetValue() )
flags |= wxCB_READONLY;
switch ( m_radioKind->GetSelection() )
{
default:
wxFAIL_MSG( _T("unknown combo kind") );
// fall through
case ComboKind_Default:
break;
case ComboKind_Simple:
flags |= wxCB_SIMPLE;
break;
case ComboKind_DropDown:
flags = wxCB_DROPDOWN;
break;
}
wxArrayString items;
if ( m_combobox )
{
int count = m_combobox->GetCount();
for ( int n = 0; n < count; n++ )
{
items.Add(m_combobox->GetString(n));
}
m_sizerCombo->Detach( m_combobox );
delete m_combobox;
}
m_combobox = new wxComboBox(this, ComboPage_Combo, _T(""),
wxDefaultPosition, wxDefaultSize,
0, NULL,
flags);
size_t count = items.GetCount();
for ( size_t n = 0; n < count; n++ )
{
m_combobox->Append(items[n]);
}
m_sizerCombo->Add(m_combobox, 1, wxGROW | wxALL, 5);
m_sizerCombo->Layout();
}
// ----------------------------------------------------------------------------
// event handlers
// ----------------------------------------------------------------------------
void ComboboxWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
{
Reset();
CreateCombo();
}
void ComboboxWidgetsPage::OnButtonChange(wxCommandEvent& WXUNUSED(event))
{
int sel = m_combobox->GetSelection();
if ( sel != -1 )
{
#ifndef __WXGTK__
m_combobox->SetString(sel, m_textChange->GetValue());
#else
wxLogMessage(_T("Not implemented in wxGTK"));
#endif
}
}
void ComboboxWidgetsPage::OnButtonDelete(wxCommandEvent& WXUNUSED(event))
{
unsigned long n;
if ( !m_textDelete->GetValue().ToULong(&n) ||
(n >= (unsigned)m_combobox->GetCount()) )
{
return;
}
m_combobox->Delete(n);
}
void ComboboxWidgetsPage::OnButtonDeleteSel(wxCommandEvent& WXUNUSED(event))
{
int sel = m_combobox->GetSelection();
if ( sel != -1 )
{
m_combobox->Delete(sel);
}
}
void ComboboxWidgetsPage::OnButtonClear(wxCommandEvent& event)
{
m_combobox->Clear();
}
void ComboboxWidgetsPage::OnButtonInsert(wxCommandEvent& event)
{
static unsigned int s_item = 0;
wxString s = m_textInsert->GetValue();
if ( !m_textInsert->IsModified() )
{
// update the default string
m_textInsert->SetValue(wxString::Format(_T("test item %u"), ++s_item));
}
if (m_combobox->GetSelection() >= 0)
m_combobox->Insert(s, m_combobox->GetSelection());
}
void ComboboxWidgetsPage::OnButtonAdd(wxCommandEvent& event)
{
static unsigned int 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_combobox->Append(s);
}
void ComboboxWidgetsPage::OnButtonAddMany(wxCommandEvent& WXUNUSED(event))
{
// "many" means 1000 here
for ( unsigned int n = 0; n < 1000; n++ )
{
m_combobox->Append(wxString::Format(_T("item #%u"), n));
}
}
void ComboboxWidgetsPage::OnButtonAddSeveral(wxCommandEvent& event)
{
m_combobox->Append(_T("First"));
m_combobox->Append(_T("another one"));
m_combobox->Append(_T("and the last (very very very very very very very very very very long) one"));
}
void ComboboxWidgetsPage::OnUpdateUICurText(wxUpdateUIEvent& event)
{
if (m_combobox)
event.SetText( wxString::Format(_T("%d"), m_combobox->GetSelection()) );
}
void ComboboxWidgetsPage::OnUpdateUIResetButton(wxUpdateUIEvent& event)
{
if (m_combobox)
event.Enable( m_chkSort->GetValue() || m_chkReadonly->GetValue() );
}
void ComboboxWidgetsPage::OnUpdateUIInsert(wxUpdateUIEvent& event)
{
if (m_combobox)
{
bool enable = !(m_combobox->GetWindowStyle() & wxCB_SORT) &&
(m_combobox->GetSelection() >= 0);
event.Enable(enable);
}
}
void ComboboxWidgetsPage::OnUpdateUIDeleteButton(wxUpdateUIEvent& event)
{
if (m_combobox)
{
unsigned long n;
event.Enable(m_textDelete->GetValue().ToULong(&n) &&
(n < (unsigned)m_combobox->GetCount()));
}
}
void ComboboxWidgetsPage::OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event)
{
if (m_combobox)
event.Enable(m_combobox->GetSelection() != -1);
}
void ComboboxWidgetsPage::OnUpdateUIClearButton(wxUpdateUIEvent& event)
{
if (m_combobox)
event.Enable(m_combobox->GetCount() != 0);
}
void ComboboxWidgetsPage::OnUpdateUIAddSeveral(wxUpdateUIEvent& event)
{
if (m_combobox)
event.Enable(!(m_combobox->GetWindowStyle() & wxCB_SORT));
}
void ComboboxWidgetsPage::OnComboText(wxCommandEvent& event)
{
if (!m_combobox)
return;
wxString s = event.GetString();
wxASSERT_MSG( s == m_combobox->GetValue(),
_T("event and combobox values should be the same") );
if (event.GetEventType() == wxEVT_COMMAND_TEXT_ENTER)
wxLogMessage(_T("Combobox enter pressed (now '%s')"), s.c_str());
else
wxLogMessage(_T("Combobox text changed (now '%s')"), s.c_str());
}
void ComboboxWidgetsPage::OnComboBox(wxCommandEvent& event)
{
long sel = event.GetInt();
m_textDelete->SetValue(wxString::Format(_T("%ld"), sel));
wxLogMessage(_T("Combobox item %ld selected"), sel);
}
void ComboboxWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& event)
{
CreateCombo();
}
#endif //wxUSE_COMBOBOX
#endif
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