gadget.cpp

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00001 // $Id: gadget.cpp 1282 2006-06-09 09:46:49Z alex $
00002 /* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE
00003 ================================XARAHEADERSTART===========================
00004  
00005                Xara LX, a vector drawing and manipulation program.
00006                     Copyright (C) 1993-2006 Xara Group Ltd.
00007        Copyright on certain contributions may be held in joint with their
00008               respective authors. See AUTHORS file for details.
00009 
00010 LICENSE TO USE AND MODIFY SOFTWARE
00011 ----------------------------------
00012 
00013 This file is part of Xara LX.
00014 
00015 Xara LX is free software; you can redistribute it and/or modify it
00016 under the terms of the GNU General Public License version 2 as published
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00018 
00019 Xara LX and its component source files are distributed in the hope
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00022 See the GNU General Public License for more details.
00023 
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00025 with Xara LX (see the file GPL in the root directory of the
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00027 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
00028 
00029 
00030 ADDITIONAL RIGHTS
00031 -----------------
00032 
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00035 rights. 
00036 
00037 The additional rights are to use, modify, and distribute the software
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00045 
00046 Nothing in this section restricts any of the rights you have under
00047 the GNU General Public License.
00048 
00049 
00050 SCOPE OF LICENSE
00051 ----------------
00052 
00053 This license applies to this program (XaraLX) and its constituent source
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00055 in part share the same code base, and are subject to their own licensing
00056 terms.
00057 
00058 This license does not apply to files in the wxXtra directory, which
00059 are built into a separate library, and are subject to the wxWindows
00060 license contained within that directory in the file "WXXTRA-LICENSE".
00061 
00062 This license does not apply to the binary libraries (if any) within
00063 the "libs" directory, which are subject to a separate license contained
00064 within that directory in the file "LIBS-LICENSE".
00065 
00066 
00067 ARRANGEMENTS FOR CONTRIBUTION OF MODIFICATIONS
00068 ----------------------------------------------
00069 
00070 Subject to the terms of the GNU Public License (see above), you are
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00075 
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00079 
00080 Please note that Xara will not accept modifications which modify any of
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00084 
00085 MARKS
00086 -----
00087 
00088 Xara, Xara LX, Xara X, Xara X/Xtreme, Xara Xtreme, the Xtreme and Xara
00089 designs are registered or unregistered trademarks, design-marks, and/or
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00091 
00092 
00093       Xara Group Ltd, Gaddesden Place, Hemel Hempstead, HP2 6EX, UK.
00094                         http://www.xara.com/
00095 
00096 =================================XARAHEADEREND============================
00097  */
00098 // 
00099 
00100 
00101 #include "camtypes.h"
00102 //#include "dialogop.h" - in camtypes.h [AUTOMATICALLY REMOVED]
00103 #include "gadget.h"
00104 
00105 
00106 // Place any IMPLEMENT type statements here
00107 CC_IMPLEMENT_MEMDUMP(CCCoreUI, CC_CLASS_MEMDUMP);
00108 CC_IMPLEMENT_MEMDUMP(Gadget, CCCoreUI);
00109 CC_IMPLEMENT_MEMDUMP(NotifyingGadget, Gadget);
00110 CC_IMPLEMENT_MEMDUMP(DialogMgrGadget, NotifyingGadget);
00111 CC_IMPLEMENT_MEMDUMP(Button, DialogMgrGadget);
00112 CC_IMPLEMENT_MEMDUMP(ListControl, DialogMgrGadget);
00113 CC_IMPLEMENT_MEMDUMP(TextControl, DialogMgrGadget);
00114 CC_IMPLEMENT_MEMDUMP(StaticTextControl, DialogMgrGadget);
00115 
00116 
00117 // We want better memory tracking
00118 // Declare smart memory handling in Debug builds
00119 #define new CAM_DEBUG_NEW
00120 
00121 
00122 // Functions follow
00123 
00124 
00125 /*******************************************************************************************
00126 
00127 >   Button::Button( DialogOp* const pDialog, CGadgetID ControlID,
00128                     Notifiable* pNotify = &Nobody )
00129 
00130     Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
00131     Created:    09/06/97
00132     
00133     Purpose:    Default destructor for a Button. Does nothing
00134 
00135 
00136 *******************************************************************************************/
00137 Button::Button( DialogOp* const pDialog, CGadgetID ControlID, Notifiable* const pNotify): 
00138         DialogMgrGadget(pDialog, ControlID), m_pNotifyOnPress(pNotify)
00139 {
00140 }
00141 
00142 
00143 /*******************************************************************************************
00144 
00145 >   Button::~Button()
00146 
00147     Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
00148     Created:    09/06/97
00149     
00150     Purpose:    Default destructor for a Button. Does nothing
00151 
00152 
00153 *******************************************************************************************/
00154 Button::~Button()
00155 {
00156 }
00157 
00158 
00159 /*******************************************************************************************
00160 
00161 >   void Button::OnClicked()
00162 
00163     Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
00164     Created:    09/06/97
00165     
00166     Purpose:    Notifies the Notifiable that this Button has been clicked
00167 
00168 
00169 *******************************************************************************************/
00170 void Button::OnClicked()
00171 {
00172     Notify(m_pNotifyOnPress);
00173 }
00174 
00175 
00176 /*******************************************************************************************
00177 
00178 >   TextControl::TextControl(   DialogOp* const pDialog, CGadgetID ControlID,
00179                                 const StringBase& InitialText = EmptyString,
00180                                 Notifiable* const pTell = &Nobody )
00181 
00182     Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
00183     Created:    09/06/97
00184 
00185     Purpose:    Default constructor for a TextControl
00186 
00187 *******************************************************************************************/
00188 TextControl::TextControl(   DialogOp* const pDialog, CGadgetID ControlID,
00189                             const StringBase& InitialText,
00190                             Notifiable* const pTell ) :
00191         DialogMgrGadget(pDialog, ControlID),
00192         m_pObserver(pTell)
00193 {
00194     // The SetWindowText sends an EN_CHANGE, which calls OnChange, which
00195     // notifies the Text_control, which updates the String, which notifies
00196     // the Text_control, which updates the window text, and around and
00197     // and around. Solve the problem in the OnChange() function, but set
00198     // "initializing" true to tell OnChange what's going on. Turn off
00199     // notification to prevent this.
00200     //
00201     // I'm assuming synchronous behavior; I don't expect SentWindowText
00202     // to return until AFTER the EnChange() handler has been executed.
00203     // If this turns out not to be the case in the future, you'll have
00204     // to modify this code: add an "initializing" field to the class,
00205     // set it true instead of calling notify_off, set it false instead
00206     // of calling notify_on, and modify OnChange to not notify anybody
00207     // if "initializing" is true.
00208 
00209 
00210     if (!InitialText.IsEmpty())
00211     {
00212         NotifyOff();
00213         pDialog->SetStringGadgetValue(m_ControlID, InitialText);
00214         NotifyOn();
00215     }
00216 }
00217 
00218 
00219 const TextControl& TextControl::operator=(const TextControl& OtherControl)
00220 {
00221     ERROR3("TextControl assignment not implemented\n");
00222 
00223     return *this;
00224 }
00225 
00226 TextControl::TextControl(const TextControl& OtherControl) :
00227     DialogMgrGadget(NULL, 0)
00228 {
00229     ERROR3("TextControl copy constructor not implemented\n");
00230 }
00231 
00232 
00233 /*******************************************************************************************
00234 
00235 >   void TextControl::UpdateText(const StringBase &NewString)
00236 
00237     Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
00238     Created:    09/06/97
00239     
00240     Purpose:    Default destructor for a TextControl
00241 
00242     Input:      NewString : the string to set in the text control
00243 
00244 *******************************************************************************************/
00245 void TextControl::UpdateText(const StringBase &NewString)
00246 {
00247     ASSERT(m_ControlID != 0 && m_pDialog != NULL);
00248 
00249     m_pDialog->SetStringGadgetValue(m_ControlID, NewString);
00250     Notify(m_pObserver);
00251 }
00252 
00253 
00254 /*******************************************************************************************
00255 
00256 >   void TextControl::RetrieveText(String* pDisplayedString) const
00257 
00258     Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
00259     Created:    09/06/97
00260     
00261     Purpose:    Default destructor for a TextControl
00262 
00263     Outputs:    pDisplayedString : the string to set in the text control
00264 
00265 *******************************************************************************************/
00266 void TextControl::RetrieveText(StringBase* const pDisplayedString) const
00267 {
00268     ASSERT(m_ControlID != 0 && m_pDialog != NULL);
00269 
00270     if (pDisplayedString != NULL)
00271     {
00272         *pDisplayedString = m_pDialog->GetStringGadgetValue(m_ControlID);
00273     }
00274 }
00275 
00276 
00277 /*******************************************************************************************
00278 
00279 >   void TextControl::OnChange() 
00280 
00281     Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
00282     Created:    09/06/97
00283     
00284     Purpose:    Default destructor for a TextControl
00285 
00286     Outputs:    pDisplayedString : the string to set in the text control
00287 
00288 *******************************************************************************************/
00289 void TextControl::OnChange() 
00290 {
00291     Notify(m_pObserver);
00292 }
00293 
00294 
00295 
00296 
00297 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - //
00298 //  StaticTextControl
00299 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - //
00300 
00301 
00302 
00303 
00304 /*******************************************************************************************
00305 
00306 >   StaticTextControl::StaticTextControl(   DialogOp* const pDialog, CGadgetID ControlID,
00307                                     const StringBase& InitialText = EmptyString,
00308                                     Notifiable* const pTell = &Nobody )
00309 
00310     Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
00311     Created:    09/06/97
00312 
00313     Purpose:    Default constructor for a TextControl
00314 
00315 *******************************************************************************************/
00316 StaticTextControl::StaticTextControl(   DialogOp* const pDialog, CGadgetID ControlID,
00317                                         const StringBase& InitialText,
00318                                         Notifiable* const pTell ) :
00319     DialogMgrGadget(pDialog, ControlID),
00320     m_pObserver(pTell)
00321 {
00322     if (!InitialText.IsEmpty())
00323     {
00324         pDialog->SetStringGadgetValue(m_ControlID, InitialText);
00325     }
00326 }
00327 
00328 
00329 /*******************************************************************************************
00330 
00331 >   void StaticTextControl::UpdateText(const StringBase &NewString)
00332 
00333     Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
00334     Created:    09/06/97
00335     
00336     Purpose:    Sets the text in this control
00337 
00338     Input:      NewString : the string to set in the static control (label)
00339 
00340 *******************************************************************************************/
00341 void StaticTextControl::UpdateText(const StringBase &NewString)
00342 {
00343     ASSERT(m_ControlID != 0 && m_pDialog != NULL);
00344 
00345     m_pDialog->SetStringGadgetValue(m_ControlID, NewString);
00346     Notify(m_pObserver);
00347 }
00348 
00349 
00350 /*******************************************************************************************
00351 
00352 >   void StaticTextControl::RetrieveText(String* pDisplayedString) const
00353 
00354     Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
00355     Created:    09/06/97
00356     
00357     Purpose:    Gets the text currently displayed in this StaticTextControl
00358 
00359     Outputs:    pDisplayedString : the string to set in the text control
00360 
00361 *******************************************************************************************/
00362 void StaticTextControl::RetrieveText(StringBase* const pDisplayedString) const
00363 {
00364     ASSERT(m_ControlID != 0 && m_pDialog != NULL);
00365 
00366     if (pDisplayedString != NULL)
00367     {
00368         *pDisplayedString = m_pDialog->GetStringGadgetValue(m_ControlID);
00369     }
00370 }
00371 
00372 
00373 /*******************************************************************************************
00374 
00375 >   void StaticTextControl::OnChange() 
00376 
00377     Author:     Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com>
00378     Created:    09/06/97
00379     
00380     Purpose:    Don't use this (yet!)
00381 
00382 *******************************************************************************************/
00383 inline void StaticTextControl::OnChange() 
00384 {
00385     Notify(m_pObserver);
00386 }
00387 
00388 
00389 const StaticTextControl& StaticTextControl::operator=(const StaticTextControl& OtherControl)
00390 {
00391     ERROR3("StaticTextControl assignment not implemented\n");
00392 
00393     return *this;
00394 }
00395 
00396 StaticTextControl::StaticTextControl(const StaticTextControl& OtherControl) :
00397     DialogMgrGadget(NULL, 0)
00398 {
00399     ERROR3("StaticTextControl copy constructor not implemented\n");
00400 }
00401 

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