695 lines
21 KiB
C++
695 lines
21 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
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* Copyright (C) 2012-2018 KiCad Developers, see AUTHORS.txt for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <dialog_shim.h>
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#include <kiway_player.h>
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#include <wx/evtloop.h>
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#include <pgm_base.h>
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#include <eda_rect.h>
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#include <wx/display.h>
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/// Toggle a window's "enable" status to disabled, then enabled on destruction.
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class WDO_ENABLE_DISABLE
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{
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wxWindow* m_win;
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public:
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WDO_ENABLE_DISABLE( wxWindow* aWindow ) :
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m_win( aWindow )
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{
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if( m_win )
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m_win->Disable();
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}
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~WDO_ENABLE_DISABLE()
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{
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if( m_win )
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{
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m_win->Enable();
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m_win->SetFocus(); // let's focus back on the parent window
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}
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}
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};
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DIALOG_SHIM::DIALOG_SHIM( wxWindow* aParent, wxWindowID id, const wxString& title,
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const wxPoint& pos, const wxSize& size, long style, const wxString& name ) :
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wxDialog( aParent, id, title, pos, size, style, name ),
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KIWAY_HOLDER( 0 ),
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m_fixupsRun( false ),
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m_qmodal_loop( 0 ),
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m_qmodal_showing( false ),
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m_qmodal_parent_disabler( 0 )
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{
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// pray that aParent is either a KIWAY_PLAYER or DIALOG_SHIM derivation.
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KIWAY_HOLDER* h = dynamic_cast<KIWAY_HOLDER*>( aParent );
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// wxASSERT_MSG( h, wxT( "DIALOG_SHIM's parent is NULL or not derived from KIWAY_PLAYER nor DIALOG_SHIM" ) );
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if( h )
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SetKiway( this, &h->Kiway() );
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Bind( wxEVT_CLOSE_WINDOW, &DIALOG_SHIM::OnCloseWindow, this );
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Bind( wxEVT_BUTTON, &DIALOG_SHIM::OnButton, this );
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#ifdef __WINDOWS__
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// On Windows, the app top windows can be brought to the foreground
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// (at least temporary) in certain circumstances,
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// for instance when calling an external tool in Eeschema boom generation.
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// So set the parent KIWAY_PLAYER kicad frame (if exists) to top window
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// to avoid this annoying behavior
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KIWAY_PLAYER* parent_kiwayplayer = dynamic_cast<KIWAY_PLAYER*>( aParent );
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if( parent_kiwayplayer )
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Pgm().App().SetTopWindow( parent_kiwayplayer );
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#endif
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Connect( wxEVT_PAINT, wxPaintEventHandler( DIALOG_SHIM::OnPaint ) );
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}
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DIALOG_SHIM::~DIALOG_SHIM()
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{
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// if the dialog is quasi-modal, this will end its event loop
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if( IsQuasiModal() )
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EndQuasiModal( wxID_CANCEL );
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if( m_qmodal_parent_disabler )
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delete m_qmodal_parent_disabler; // usually NULL by now
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}
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void DIALOG_SHIM::FinishDialogSettings()
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{
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// must be called from the constructor of derived classes,
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// when all widgets are initialized, and therefore their size fixed
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// SetSizeHints fixes the minimal size of sizers in the dialog
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// (SetSizeHints calls Fit(), so no need to call it)
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GetSizer()->SetSizeHints( this );
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// the default position, when calling the first time the dlg
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Center();
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}
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void DIALOG_SHIM::SetSizeInDU( int x, int y )
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{
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wxSize sz( x, y );
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SetSize( ConvertDialogToPixels( sz ) );
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}
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int DIALOG_SHIM::HorizPixelsFromDU( int x )
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{
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wxSize sz( x, 0 );
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return ConvertDialogToPixels( sz ).x;
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}
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int DIALOG_SHIM::VertPixelsFromDU( int y )
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{
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wxSize sz( 0, y );
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return ConvertDialogToPixels( sz ).y;
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}
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// our hashtable is an implementation secret, don't need or want it in a header file
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#include <hashtables.h>
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#include <base_struct.h> // EDA_RECT
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#include <typeinfo>
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static RECT_MAP class_map;
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bool DIALOG_SHIM::Show( bool show )
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{
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bool ret;
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const char* hash_key;
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if( m_hash_key.size() )
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{
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// a special case like EDA_LIST_DIALOG, which has multiple uses.
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hash_key = m_hash_key.c_str();
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}
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else
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{
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hash_key = typeid(*this).name();
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}
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// Show or hide the window. If hiding, save current position and size.
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// If showing, use previous position and size.
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if( show )
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{
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#ifndef __WINDOWS__
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wxDialog::Raise(); // Needed on OS X and some other window managers (i.e. Unity)
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#endif
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ret = wxDialog::Show( show );
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// classname is key, returns a zeroed out default EDA_RECT if none existed before.
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EDA_RECT savedDialogRect = class_map[ hash_key ];
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if( savedDialogRect.GetSize().x != 0 && savedDialogRect.GetSize().y != 0 )
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{
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SetSize( savedDialogRect.GetPosition().x,
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savedDialogRect.GetPosition().y,
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std::max( wxDialog::GetSize().x, savedDialogRect.GetSize().x ),
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std::max( wxDialog::GetSize().y, savedDialogRect.GetSize().y ),
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0 );
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}
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// Be sure that the dialog appears in a visible area
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// (the dialog position might have been stored at the time when it was
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// shown on another display)
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if( wxDisplay::GetFromWindow( this ) == wxNOT_FOUND )
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Centre();
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}
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else
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{
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// Save the dialog's position & size before hiding, using classname as key
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class_map[ hash_key ] = EDA_RECT( wxDialog::GetPosition(), wxDialog::GetSize() );
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#ifdef __WXMAC__
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if ( m_eventLoop )
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m_eventLoop->Exit( GetReturnCode() ); // Needed for APP-MODAL dlgs on OSX
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#endif
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ret = wxDialog::Show( show );
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}
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return ret;
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}
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bool DIALOG_SHIM::Enable( bool enable )
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{
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// so we can do logging of this state change:
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#if defined(DEBUG)
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const char* type_id = typeid( *this ).name();
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printf( "wxDialog %s: %s\n", type_id, enable ? "enabled" : "disabled" );
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#endif
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return wxDialog::Enable( enable );
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}
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// Traverse all items in the dialog. If selectTextInTextCtrls, do a SelectAll()
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// in each so that tab followed by typing will replace the existing value.
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// Also collects the firstTextCtrl and the item with focus (if any).
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static void recursiveDescent( wxWindowList& children, const bool selectTextInTextCtrls,
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wxWindow* & firstTextCtrl, wxWindow* & windowWithFocus )
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{
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for( wxWindowList::iterator it = children.begin(); it != children.end(); ++it )
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{
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wxWindow* child = *it;
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if( child->HasFocus() )
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windowWithFocus = child;
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wxTextCtrl* childTextCtrl = dynamic_cast<wxTextCtrl*>( child );
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if( childTextCtrl )
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{
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if( !firstTextCtrl && childTextCtrl->IsEnabled() && childTextCtrl->IsEditable() )
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firstTextCtrl = childTextCtrl;
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if( selectTextInTextCtrls )
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{
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wxTextEntry* asTextEntry = dynamic_cast<wxTextEntry*>( childTextCtrl );
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// Respect an existing selection
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if( asTextEntry->GetStringSelection().IsEmpty() )
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asTextEntry->SelectAll();
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}
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}
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recursiveDescent( child->GetChildren(), selectTextInTextCtrls, firstTextCtrl,
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windowWithFocus );
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}
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}
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#ifdef __WXMAC__
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static void fixOSXCancelButtonIssue( wxWindow *aWindow )
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{
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// A ugly hack to fix an issue on OSX: cmd+c closes the dialog instead of
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// copying the text if a button with wxID_CANCEL is used in a
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// wxStdDialogButtonSizer created by wxFormBuilder: the label is &Cancel, and
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// this accelerator key has priority over the standard copy accelerator.
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wxButton* button = dynamic_cast<wxButton*>( wxWindow::FindWindowById( wxID_CANCEL, aWindow ) );
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if( button )
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{
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wxString buttonLabel = button->GetLabel();
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buttonLabel.Replace( wxT( "&C" ), wxT( "C" ) );
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buttonLabel.Replace( wxT( "&c" ), wxT( "c" ) );
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button->SetLabel( buttonLabel );
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}
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}
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#endif
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void DIALOG_SHIM::OnPaint( wxPaintEvent &event )
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{
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if( !m_fixupsRun )
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{
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#if DLGSHIM_SELECT_ALL_IN_TEXT_CONTROLS
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const bool selectAllInTextCtrls = true;
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#else
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const bool selectAllInTextCtrls = false;
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#endif
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wxWindow* firstTextCtrl = NULL;
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wxWindow* windowWithFocus = NULL;
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recursiveDescent( GetChildren(), selectAllInTextCtrls, firstTextCtrl,
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windowWithFocus );
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#if DLGSHIM_USE_SETFOCUS
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// While it would be nice to honour any focus already set (which was
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// recorded in windowWithFocus), the reality is that it's currently wrong
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// far more often than it's right.
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// So just focus on the first text control if we have one; otherwise the
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// focus on the dialog itself, which will at least allow esc, return, etc.
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// to function.
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if( firstTextCtrl )
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firstTextCtrl->SetFocus();
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else
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SetFocus();
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#endif
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#ifdef __WXMAC__
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fixOSXCancelButtonIssue( this );
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#endif
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m_fixupsRun = true;
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}
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event.Skip();
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}
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/*
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Quasi-Modal Mode Explained:
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The gtk calls in wxDialog::ShowModal() cause event routing problems if that
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modal dialog then tries to use KIWAY_PLAYER::ShowModal(). The latter shows up
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and mostly works but does not respond to the window decoration close button.
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There is no way to get around this without reversing the gtk calls temporarily.
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Quasi-Modal mode is our own almost modal mode which disables only the parent
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of the DIALOG_SHIM, leaving other frames operable and while staying captured in the
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nested event loop. This avoids the gtk calls and leaves event routing pure
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and sufficient to operate the KIWAY_PLAYER::ShowModal() properly. When using
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ShowQuasiModal() you have to use EndQuasiModal() in your dialogs and not
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EndModal(). There is also IsQuasiModal() but its value can only be true
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when the nested event loop is active. Do not mix the modal and quasi-modal
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functions. Use one set or the other.
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You might find this behavior preferable over a pure modal mode, and it was said
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that only the Mac has this natively, but now other platforms have something
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similar. You CAN use it anywhere for any dialog. But you MUST use it when
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you want to use KIWAY_PLAYER::ShowModal() from a dialog event.
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*/
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/*
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/// wxEventLoopActivator but with a friend so it
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/// has access to m_evtLoopOld, and it does not SetActive() as that is
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/// done inside base class Run().
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class ELOOP_ACTIVATOR
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{
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friend class EVENT_LOOP;
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public:
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ELOOP_ACTIVATOR( WX_EVENT_LOOP* evtLoop )
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{
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m_evtLoopOld = wxEventLoopBase::GetActive();
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// wxEventLoopBase::SetActive( evtLoop );
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}
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~ELOOP_ACTIVATOR()
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{
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// restore the previously active event loop
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wxEventLoopBase::SetActive( m_evtLoopOld );
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}
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private:
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WX_EVENT_LOOP* m_evtLoopOld;
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};
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*/
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class EVENT_LOOP : public WX_EVENT_LOOP
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{
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public:
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EVENT_LOOP()
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{
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;
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}
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~EVENT_LOOP()
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{
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}
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#if 0 // does not work any better than inherited wxGuiEventLoop functions:
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// sets the "should exit" flag and wakes up the loop so that it terminates
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// soon
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void ScheduleExit( int rc = 0 )
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{
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wxCHECK_RET( IsInsideRun(), wxT("can't call ScheduleExit() if not running") );
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m_exitcode = rc;
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m_shouldExit = true;
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OnExit();
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// all we have to do to exit from the loop is to (maybe) wake it up so that
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// it can notice that Exit() had been called
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//
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// in particular, do *not* use here calls such as PostQuitMessage() (under
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// MSW) which terminate the current event loop here because we're not sure
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// that it is going to be processed by the correct event loop: it would be
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// possible that another one is started and terminated by mistake if we do
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// this
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WakeUp();
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}
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int Run()
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{
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// event loops are not recursive, you need to create another loop!
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//wxCHECK_MSG( !IsInsideRun(), -1, wxT("can't reenter a message loop") );
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// ProcessIdle() and ProcessEvents() below may throw so the code here should
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// be exception-safe, hence we must use local objects for all actions we
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// should undo
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wxEventLoopActivator activate(this);
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// We might be called again, after a previous call to ScheduleExit(), so
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// reset this flag.
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m_shouldExit = false;
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// Set this variable to true for the duration of this method.
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setInsideRun( true );
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struct SET_FALSE
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{
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EVENT_LOOP* m_loop;
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SET_FALSE( EVENT_LOOP* aLoop ) : m_loop( aLoop ) {}
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~SET_FALSE() { m_loop->setInsideRun( false ); }
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} t( this );
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// Finally really run the loop.
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return DoRun();
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}
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bool ProcessEvents()
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{
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// process pending wx events first as they correspond to low-level events
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// which happened before, i.e. typically pending events were queued by a
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// previous call to Dispatch() and if we didn't process them now the next
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// call to it might enqueue them again (as happens with e.g. socket events
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// which would be generated as long as there is input available on socket
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// and this input is only removed from it when pending event handlers are
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// executed)
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if( wxTheApp )
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{
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wxTheApp->ProcessPendingEvents();
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// One of the pending event handlers could have decided to exit the
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// loop so check for the flag before trying to dispatch more events
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// (which could block indefinitely if no more are coming).
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if( m_shouldExit )
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return false;
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}
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return Dispatch();
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}
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int DoRun()
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{
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// we must ensure that OnExit() is called even if an exception is thrown
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// from inside ProcessEvents() but we must call it from Exit() in normal
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// situations because it is supposed to be called synchronously,
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// wxModalEventLoop depends on this (so we can't just use ON_BLOCK_EXIT or
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// something similar here)
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#if wxUSE_EXCEPTIONS
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for( ; ; )
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{
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try
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{
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#endif // wxUSE_EXCEPTIONS
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// this is the event loop itself
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for( ; ; )
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{
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// generate and process idle events for as long as we don't
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// have anything else to do
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while ( !m_shouldExit && !Pending() && ProcessIdle() )
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;
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if ( m_shouldExit )
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break;
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// a message came or no more idle processing to do, dispatch
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// all the pending events and call Dispatch() to wait for the
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// next message
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if ( !ProcessEvents() )
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{
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// we got WM_QUIT
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break;
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}
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}
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// Process the remaining queued messages, both at the level of the
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// underlying toolkit level (Pending/Dispatch()) and wx level
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// (Has/ProcessPendingEvents()).
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//
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// We do run the risk of never exiting this loop if pending event
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// handlers endlessly generate new events but they shouldn't do
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// this in a well-behaved program and we shouldn't just discard the
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// events we already have, they might be important.
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for( ; ; )
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{
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bool hasMoreEvents = false;
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if ( wxTheApp && wxTheApp->HasPendingEvents() )
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{
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wxTheApp->ProcessPendingEvents();
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hasMoreEvents = true;
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}
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if ( Pending() )
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{
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Dispatch();
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hasMoreEvents = true;
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}
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if ( !hasMoreEvents )
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break;
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}
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#if wxUSE_EXCEPTIONS
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// exit the outer loop as well
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break;
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}
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catch ( ... )
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{
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try
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{
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if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() )
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{
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OnExit();
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break;
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}
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//else: continue running the event loop
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}
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catch ( ... )
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{
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// OnException() throwed, possibly rethrowing the same
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// exception again: very good, but we still need OnExit() to
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// be called
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OnExit();
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throw;
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}
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}
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}
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#endif // wxUSE_EXCEPTIONS
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return m_exitcode;
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}
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protected:
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int m_exitcode;
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/* this only works if you add
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friend class EVENT_LOOP
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to EventLoopBase
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*/
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void setInsideRun( bool aValue )
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{
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m_isInsideRun = aValue;
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}
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#endif
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};
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int DIALOG_SHIM::ShowQuasiModal()
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{
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// This is an exception safe way to zero a pointer before returning.
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// Yes, even though DismissModal() clears this first normally, this is
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// here in case there's an exception before the dialog is dismissed.
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struct NULLER
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{
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void*& m_what;
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NULLER( void*& aPtr ) : m_what( aPtr ) {}
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~NULLER() { m_what = 0; } // indeed, set it to NULL on destruction
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} clear_this( (void*&) m_qmodal_loop );
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// release the mouse if it's currently captured as the window having it
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// will be disabled when this dialog is shown -- but will still keep the
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// capture making it impossible to do anything in the modal dialog itself
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wxWindow* win = wxWindow::GetCapture();
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if( win )
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win->ReleaseMouse();
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// Get the optimal parent
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wxWindow* parent = GetParentForModalDialog( GetParent(), GetWindowStyle() );
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// Show the optimal parent
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DBG( if( parent ) printf( "%s: optimal parent: %s\n", __func__, typeid(*parent).name() );)
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wxASSERT_MSG( !m_qmodal_parent_disabler,
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wxT( "Caller using ShowQuasiModal() twice on same window?" ) );
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// quasi-modal: disable only my "optimal" parent
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m_qmodal_parent_disabler = new WDO_ENABLE_DISABLE( parent );
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#ifdef __WXMAC__
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// Apple in its infinite wisdom will raise a disabled window before even passing
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// us the event, so we have no way to stop it. Instead, we must set an order on
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// the windows so that the quasi-modal will be pushed in front of the disabled
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// window when it is raised.
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ReparentQuasiModal();
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#endif
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Show( true );
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|
m_qmodal_showing = true;
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EVENT_LOOP event_loop;
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m_qmodal_loop = &event_loop;
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event_loop.Run();
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|
return GetReturnCode();
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}
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|
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|
void DIALOG_SHIM::EndQuasiModal( int retCode )
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|
{
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|
// Hook up validator and transfer data from controls handling so quasi-modal dialogs
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|
// handle validation in the same way as other dialogs.
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|
if( ( retCode == wxID_OK ) && ( !Validate() || !TransferDataFromWindow() ) )
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|
return;
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|
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|
SetReturnCode( retCode );
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|
|
|
if( !IsQuasiModal() )
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|
{
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|
wxFAIL_MSG( wxT( "either DIALOG_SHIM::EndQuasiModal called twice or ShowQuasiModal wasn't called" ) );
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|
return;
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|
}
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|
|
|
m_qmodal_showing = false;
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|
|
|
if( m_qmodal_loop )
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|
{
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|
if( m_qmodal_loop->IsRunning() )
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|
m_qmodal_loop->Exit( 0 );
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else
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|
m_qmodal_loop->ScheduleExit( 0 );
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|
|
|
m_qmodal_loop = NULL;
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|
}
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|
|
|
delete m_qmodal_parent_disabler;
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|
m_qmodal_parent_disabler = 0;
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|
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|
Show( false );
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|
}
|
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|
|
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|
void DIALOG_SHIM::OnCloseWindow( wxCloseEvent& aEvent )
|
|
{
|
|
if( IsQuasiModal() )
|
|
{
|
|
EndQuasiModal( wxID_CANCEL );
|
|
return;
|
|
}
|
|
|
|
// This is mandatory to allow wxDialogBase::OnCloseWindow() to be called.
|
|
aEvent.Skip();
|
|
}
|
|
|
|
|
|
void DIALOG_SHIM::OnButton( wxCommandEvent& aEvent )
|
|
{
|
|
if( IsQuasiModal() )
|
|
{
|
|
const int id = aEvent.GetId();
|
|
|
|
if( id == GetAffirmativeId() )
|
|
{
|
|
EndQuasiModal( id );
|
|
}
|
|
else if( id == wxID_APPLY )
|
|
{
|
|
// Dialogs that provide Apply buttons should make sure data is valid before
|
|
// allowing a transfer, as there is no other way to indicate failure
|
|
// (i.e. the dialog can't refuse to close as it might with OK, because it
|
|
// isn't closing anyway)
|
|
if( Validate() )
|
|
{
|
|
bool success = TransferDataFromWindow();
|
|
(void) success;
|
|
}
|
|
}
|
|
else if( id == GetEscapeId() ||
|
|
(id == wxID_CANCEL && GetEscapeId() == wxID_ANY) )
|
|
{
|
|
EndQuasiModal( wxID_CANCEL );
|
|
}
|
|
else // not a standard button
|
|
{
|
|
aEvent.Skip();
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
// This is mandatory to allow wxDialogBase::OnButton() to be called.
|
|
aEvent.Skip();
|
|
}
|