// $Id: gadget.cpp 1282 2006-06-09 09:46:49Z alex $ /* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE ================================XARAHEADERSTART=========================== Xara LX, a vector drawing and manipulation program. Copyright (C) 1993-2006 Xara Group Ltd. Copyright on certain contributions may be held in joint with their respective authors. See AUTHORS file for details. LICENSE TO USE AND MODIFY SOFTWARE ---------------------------------- This file is part of Xara LX. Xara LX is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation. Xara LX and its component source files are distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. 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Xara Group Ltd, Gaddesden Place, Hemel Hempstead, HP2 6EX, UK. http://www.xara.com/ =================================XARAHEADEREND============================ */ // #include "camtypes.h" //#include "dialogop.h" - in camtypes.h [AUTOMATICALLY REMOVED] #include "gadget.h" // Place any IMPLEMENT type statements here CC_IMPLEMENT_MEMDUMP(CCCoreUI, CC_CLASS_MEMDUMP); CC_IMPLEMENT_MEMDUMP(Gadget, CCCoreUI); CC_IMPLEMENT_MEMDUMP(NotifyingGadget, Gadget); CC_IMPLEMENT_MEMDUMP(DialogMgrGadget, NotifyingGadget); CC_IMPLEMENT_MEMDUMP(Button, DialogMgrGadget); CC_IMPLEMENT_MEMDUMP(ListControl, DialogMgrGadget); CC_IMPLEMENT_MEMDUMP(TextControl, DialogMgrGadget); CC_IMPLEMENT_MEMDUMP(StaticTextControl, DialogMgrGadget); // We want better memory tracking // Declare smart memory handling in Debug builds #define new CAM_DEBUG_NEW // Functions follow /******************************************************************************************* > Button::Button( DialogOp* const pDialog, CGadgetID ControlID, Notifiable* pNotify = &Nobody ) Author: Colin_Barfoot (Xara Group Ltd) Created: 09/06/97 Purpose: Default destructor for a Button. Does nothing *******************************************************************************************/ Button::Button( DialogOp* const pDialog, CGadgetID ControlID, Notifiable* const pNotify): DialogMgrGadget(pDialog, ControlID), m_pNotifyOnPress(pNotify) { } /******************************************************************************************* > Button::~Button() Author: Colin_Barfoot (Xara Group Ltd) Created: 09/06/97 Purpose: Default destructor for a Button. Does nothing *******************************************************************************************/ Button::~Button() { } /******************************************************************************************* > void Button::OnClicked() Author: Colin_Barfoot (Xara Group Ltd) Created: 09/06/97 Purpose: Notifies the Notifiable that this Button has been clicked *******************************************************************************************/ void Button::OnClicked() { Notify(m_pNotifyOnPress); } /******************************************************************************************* > TextControl::TextControl( DialogOp* const pDialog, CGadgetID ControlID, const StringBase& InitialText = EmptyString, Notifiable* const pTell = &Nobody ) Author: Colin_Barfoot (Xara Group Ltd) Created: 09/06/97 Purpose: Default constructor for a TextControl *******************************************************************************************/ TextControl::TextControl( DialogOp* const pDialog, CGadgetID ControlID, const StringBase& InitialText, Notifiable* const pTell ) : DialogMgrGadget(pDialog, ControlID), m_pObserver(pTell) { // The SetWindowText sends an EN_CHANGE, which calls OnChange, which // notifies the Text_control, which updates the String, which notifies // the Text_control, which updates the window text, and around and // and around. Solve the problem in the OnChange() function, but set // "initializing" true to tell OnChange what's going on. Turn off // notification to prevent this. // // I'm assuming synchronous behavior; I don't expect SentWindowText // to return until AFTER the EnChange() handler has been executed. // If this turns out not to be the case in the future, you'll have // to modify this code: add an "initializing" field to the class, // set it true instead of calling notify_off, set it false instead // of calling notify_on, and modify OnChange to not notify anybody // if "initializing" is true. if (!InitialText.IsEmpty()) { NotifyOff(); pDialog->SetStringGadgetValue(m_ControlID, InitialText); NotifyOn(); } } const TextControl& TextControl::operator=(const TextControl& OtherControl) { ERROR3("TextControl assignment not implemented\n"); return *this; } TextControl::TextControl(const TextControl& OtherControl) : DialogMgrGadget(NULL, 0) { ERROR3("TextControl copy constructor not implemented\n"); } /******************************************************************************************* > void TextControl::UpdateText(const StringBase &NewString) Author: Colin_Barfoot (Xara Group Ltd) Created: 09/06/97 Purpose: Default destructor for a TextControl Input: NewString : the string to set in the text control *******************************************************************************************/ void TextControl::UpdateText(const StringBase &NewString) { ASSERT(m_ControlID != 0 && m_pDialog != NULL); m_pDialog->SetStringGadgetValue(m_ControlID, NewString); Notify(m_pObserver); } /******************************************************************************************* > void TextControl::RetrieveText(String* pDisplayedString) const Author: Colin_Barfoot (Xara Group Ltd) Created: 09/06/97 Purpose: Default destructor for a TextControl Outputs: pDisplayedString : the string to set in the text control *******************************************************************************************/ void TextControl::RetrieveText(StringBase* const pDisplayedString) const { ASSERT(m_ControlID != 0 && m_pDialog != NULL); if (pDisplayedString != NULL) { *pDisplayedString = m_pDialog->GetStringGadgetValue(m_ControlID); } } /******************************************************************************************* > void TextControl::OnChange() Author: Colin_Barfoot (Xara Group Ltd) Created: 09/06/97 Purpose: Default destructor for a TextControl Outputs: pDisplayedString : the string to set in the text control *******************************************************************************************/ void TextControl::OnChange() { Notify(m_pObserver); } // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - // // StaticTextControl // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - // /******************************************************************************************* > StaticTextControl::StaticTextControl( DialogOp* const pDialog, CGadgetID ControlID, const StringBase& InitialText = EmptyString, Notifiable* const pTell = &Nobody ) Author: Colin_Barfoot (Xara Group Ltd) Created: 09/06/97 Purpose: Default constructor for a TextControl *******************************************************************************************/ StaticTextControl::StaticTextControl( DialogOp* const pDialog, CGadgetID ControlID, const StringBase& InitialText, Notifiable* const pTell ) : DialogMgrGadget(pDialog, ControlID), m_pObserver(pTell) { if (!InitialText.IsEmpty()) { pDialog->SetStringGadgetValue(m_ControlID, InitialText); } } /******************************************************************************************* > void StaticTextControl::UpdateText(const StringBase &NewString) Author: Colin_Barfoot (Xara Group Ltd) Created: 09/06/97 Purpose: Sets the text in this control Input: NewString : the string to set in the static control (label) *******************************************************************************************/ void StaticTextControl::UpdateText(const StringBase &NewString) { ASSERT(m_ControlID != 0 && m_pDialog != NULL); m_pDialog->SetStringGadgetValue(m_ControlID, NewString); Notify(m_pObserver); } /******************************************************************************************* > void StaticTextControl::RetrieveText(String* pDisplayedString) const Author: Colin_Barfoot (Xara Group Ltd) Created: 09/06/97 Purpose: Gets the text currently displayed in this StaticTextControl Outputs: pDisplayedString : the string to set in the text control *******************************************************************************************/ void StaticTextControl::RetrieveText(StringBase* const pDisplayedString) const { ASSERT(m_ControlID != 0 && m_pDialog != NULL); if (pDisplayedString != NULL) { *pDisplayedString = m_pDialog->GetStringGadgetValue(m_ControlID); } } /******************************************************************************************* > void StaticTextControl::OnChange() Author: Colin_Barfoot (Xara Group Ltd) Created: 09/06/97 Purpose: Don't use this (yet!) *******************************************************************************************/ inline void StaticTextControl::OnChange() { Notify(m_pObserver); } const StaticTextControl& StaticTextControl::operator=(const StaticTextControl& OtherControl) { ERROR3("StaticTextControl assignment not implemented\n"); return *this; } StaticTextControl::StaticTextControl(const StaticTextControl& OtherControl) : DialogMgrGadget(NULL, 0) { ERROR3("StaticTextControl copy constructor not implemented\n"); }