| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/univ/dialog.cpp |
| 3 | // Author: Robert Roebling, Vaclav Slavik |
| 4 | // Id: $Id$ |
| 5 | // Copyright: (c) 2001 SciTech Software, Inc. (www.scitechsoft.com) |
| 6 | // Licence: wxWindows licence |
| 7 | ///////////////////////////////////////////////////////////////////////////// |
| 8 | |
| 9 | // ============================================================================ |
| 10 | // declarations |
| 11 | // ============================================================================ |
| 12 | |
| 13 | // ---------------------------------------------------------------------------- |
| 14 | // headers |
| 15 | // ---------------------------------------------------------------------------- |
| 16 | |
| 17 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) |
| 18 | #pragma implementation "univdialog.h" |
| 19 | #endif |
| 20 | |
| 21 | // For compilers that support precompilation, includes "wx.h". |
| 22 | #include "wx/wxprec.h" |
| 23 | |
| 24 | #ifdef __BORLANDC__ |
| 25 | #pragma hdrstop |
| 26 | #endif |
| 27 | |
| 28 | #ifndef WX_PRECOMP |
| 29 | #include "wx/dialog.h" |
| 30 | #include "wx/utils.h" |
| 31 | #include "wx/app.h" |
| 32 | #endif |
| 33 | |
| 34 | #include "wx/evtloop.h" |
| 35 | |
| 36 | //----------------------------------------------------------------------------- |
| 37 | // wxDialog |
| 38 | //----------------------------------------------------------------------------- |
| 39 | |
| 40 | BEGIN_EVENT_TABLE(wxDialog,wxDialogBase) |
| 41 | EVT_BUTTON (wxID_OK, wxDialog::OnOK) |
| 42 | EVT_BUTTON (wxID_CANCEL, wxDialog::OnCancel) |
| 43 | EVT_BUTTON (wxID_APPLY, wxDialog::OnApply) |
| 44 | EVT_CLOSE (wxDialog::OnCloseWindow) |
| 45 | END_EVENT_TABLE() |
| 46 | |
| 47 | IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxTopLevelWindow) |
| 48 | |
| 49 | void wxDialog::Init() |
| 50 | { |
| 51 | m_returnCode = 0; |
| 52 | m_windowDisabler = NULL; |
| 53 | m_eventLoop = NULL; |
| 54 | m_isShowingModal = false; |
| 55 | } |
| 56 | |
| 57 | wxDialog::~wxDialog() |
| 58 | { |
| 59 | delete m_eventLoop; |
| 60 | } |
| 61 | |
| 62 | bool wxDialog::Create(wxWindow *parent, |
| 63 | wxWindowID id, const wxString &title, |
| 64 | const wxPoint &pos, const wxSize &size, |
| 65 | long style, const wxString &name) |
| 66 | { |
| 67 | SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG); |
| 68 | |
| 69 | // all dialogs should have tab traversal enabled |
| 70 | style |= wxTAB_TRAVERSAL; |
| 71 | |
| 72 | return wxTopLevelWindow::Create(parent, id, title, pos, size, style, name); |
| 73 | } |
| 74 | |
| 75 | void wxDialog::OnApply(wxCommandEvent &WXUNUSED(event)) |
| 76 | { |
| 77 | if ( Validate() ) |
| 78 | TransferDataFromWindow(); |
| 79 | } |
| 80 | |
| 81 | void wxDialog::OnCancel(wxCommandEvent &WXUNUSED(event)) |
| 82 | { |
| 83 | if ( IsModal() ) |
| 84 | { |
| 85 | EndModal(wxID_CANCEL); |
| 86 | } |
| 87 | else |
| 88 | { |
| 89 | SetReturnCode(wxID_CANCEL); |
| 90 | Show(false); |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | void wxDialog::OnOK(wxCommandEvent &WXUNUSED(event)) |
| 95 | { |
| 96 | if ( Validate() && TransferDataFromWindow() ) |
| 97 | { |
| 98 | if ( IsModal() ) |
| 99 | { |
| 100 | EndModal(wxID_OK); |
| 101 | } |
| 102 | else |
| 103 | { |
| 104 | SetReturnCode(wxID_OK); |
| 105 | Show(false); |
| 106 | } |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event)) |
| 111 | { |
| 112 | // We'll send a Cancel message by default, |
| 113 | // which may close the dialog. |
| 114 | // Check for looping if the Cancel event handler calls Close(). |
| 115 | |
| 116 | // Note that if a cancel button and handler aren't present in the dialog, |
| 117 | // nothing will happen when you close the dialog via the window manager, or |
| 118 | // via Close(). |
| 119 | // We wouldn't want to destroy the dialog by default, since the dialog may have been |
| 120 | // created on the stack. |
| 121 | // However, this does mean that calling dialog->Close() won't delete the dialog |
| 122 | // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be |
| 123 | // sure to destroy the dialog. |
| 124 | // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog. |
| 125 | |
| 126 | static wxList s_closing; |
| 127 | |
| 128 | if (s_closing.Member(this)) |
| 129 | return; // no loops |
| 130 | |
| 131 | s_closing.Append(this); |
| 132 | |
| 133 | wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL); |
| 134 | cancelEvent.SetEventObject(this); |
| 135 | GetEventHandler()->ProcessEvent(cancelEvent); |
| 136 | s_closing.DeleteObject(this); |
| 137 | } |
| 138 | |
| 139 | bool wxDialog::Show(bool show) |
| 140 | { |
| 141 | if ( !show ) |
| 142 | { |
| 143 | // if we had disabled other app windows, reenable them back now because |
| 144 | // if they stay disabled Windows will activate another window (one |
| 145 | // which is enabled, anyhow) and we will lose activation |
| 146 | if ( m_windowDisabler ) |
| 147 | { |
| 148 | delete m_windowDisabler; |
| 149 | m_windowDisabler = NULL; |
| 150 | } |
| 151 | |
| 152 | if ( IsModal() ) |
| 153 | EndModal(wxID_CANCEL); |
| 154 | } |
| 155 | |
| 156 | bool ret = wxDialogBase::Show(show); |
| 157 | |
| 158 | if ( show ) |
| 159 | InitDialog(); |
| 160 | |
| 161 | return ret; |
| 162 | } |
| 163 | |
| 164 | bool wxDialog::IsModal() const |
| 165 | { |
| 166 | return m_isShowingModal; |
| 167 | } |
| 168 | |
| 169 | int wxDialog::ShowModal() |
| 170 | { |
| 171 | if ( IsModal() ) |
| 172 | { |
| 173 | wxFAIL_MSG( wxT("wxDialog:ShowModal called twice") ); |
| 174 | return GetReturnCode(); |
| 175 | } |
| 176 | |
| 177 | // use the apps top level window as parent if none given unless explicitly |
| 178 | // forbidden |
| 179 | if ( !GetParent() && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) ) |
| 180 | { |
| 181 | wxWindow *parent = wxTheApp->GetTopWindow(); |
| 182 | if ( parent && parent != this ) |
| 183 | { |
| 184 | m_parent = parent; |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | Show(true); |
| 189 | |
| 190 | m_isShowingModal = true; |
| 191 | |
| 192 | wxASSERT_MSG( !m_windowDisabler, _T("disabling windows twice?") ); |
| 193 | |
| 194 | #if defined(__WXGTK__) || defined(__WXMGL__) |
| 195 | wxBusyCursorSuspender suspender; |
| 196 | // FIXME (FIXME_MGL) - make sure busy cursor disappears under MSW too |
| 197 | #endif |
| 198 | |
| 199 | m_windowDisabler = new wxWindowDisabler(this); |
| 200 | if ( !m_eventLoop ) |
| 201 | m_eventLoop = new wxEventLoop; |
| 202 | |
| 203 | m_eventLoop->Run(); |
| 204 | |
| 205 | return GetReturnCode(); |
| 206 | } |
| 207 | |
| 208 | void wxDialog::EndModal(int retCode) |
| 209 | { |
| 210 | wxASSERT_MSG( m_eventLoop, _T("wxDialog is not modal") ); |
| 211 | |
| 212 | SetReturnCode(retCode); |
| 213 | |
| 214 | if ( !IsModal() ) |
| 215 | { |
| 216 | wxFAIL_MSG( wxT("wxDialog:EndModal called twice") ); |
| 217 | return; |
| 218 | } |
| 219 | |
| 220 | m_isShowingModal = false; |
| 221 | |
| 222 | m_eventLoop->Exit(); |
| 223 | |
| 224 | Show(false); |
| 225 | } |