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Text File  |  1997-09-03  |  8KB  |  341 lines
  1. /*
  2.  *  File:       Document.cpp
  3.  *  Summary:       Quill's document class. 
  4.  *  Written by: Jesse Jones
  5.  *
  6.  *  Copyright ｩ 1996-1997 Jesse Jones. 
  7.  *    For conditions of distribution and use, see copyright notice in ZTypes.h  
  8.  *
  9.  *  Change History (most recent first):    
  10.  *
  11.  *         <3>     5/11/97    JDJ        Keeps the resource fork open.
  12.  *         <2>     5/04/97    JDJ        Added mPensMap.
  13.  *         <1>     8/09/96    JDJ        Created
  14.  */
  15.  
  16. #include "Document.h"
  17.  
  18. #include <Resources.h>
  19.  
  20. #include <ZDialogUtils.h>
  21. #include <ZInput.h>
  22. #include <ZResUtils.h>
  23. #include <ZStringUtils.h>
  24.  
  25. #include "CustomClassDialog.h"
  26.  
  27.  
  28. // ===================================================================================
  29. //    class CDocument
  30. // ===================================================================================
  31.  
  32. //---------------------------------------------------------------
  33. //
  34. // CDocument::~CDocument
  35. //
  36. //---------------------------------------------------------------
  37. CDocument::~CDocument()
  38. {
  39.     if (mRsrcRefNum != kNoFileRefNum)
  40.         CloseResFile(mRsrcRefNum);
  41. }
  42.  
  43.  
  44. //---------------------------------------------------------------
  45. //
  46. // CDocument::CDocument
  47. //
  48. //---------------------------------------------------------------
  49. CDocument::CDocument(MCommander* super) : TDocument(super), mWindowMap(new CResourceMap('Wind')), mViewMap(new CResourceMap('View')), mTraitsMap(new CResourceMap('Txtr')), mPensMap(new CResourceMap('Pen ')), mCustomPanes(new CCustomClasses)
  50. {
  51.     mCreator  = 'QUIL';
  52.     mFileType = 'RVob';
  53.     
  54.     mWindowMap->AddListener(this);
  55.     mViewMap->AddListener(this);
  56.     mTraitsMap->AddListener(this);
  57.     mPensMap->AddListener(this);
  58.     
  59.     mRsrcRefNum = kNoFileRefNum;
  60. }
  61.  
  62.  
  63. //---------------------------------------------------------------
  64. //
  65. // CDocument::HandleOpen
  66. //
  67. //---------------------------------------------------------------
  68. void CDocument::HandleOpen(const TFileSpec& spec)
  69. {
  70.     PRECONDITION(mRsrcRefNum == kNoFileRefNum);
  71.  
  72.     Inherited::HandleOpen(spec);
  73.  
  74.     mRsrcRefNum = FSpOpenResFile(mFileSpec, fsCurPerm);
  75.     ASSERT(ResError() == noErr);                    // we only keep the resource fork open so the editors have access to things like SPen and STextTrait resources so we shouldn't throw here
  76.  
  77.     POSTCONDITION(true);
  78. }
  79.  
  80.  
  81. //---------------------------------------------------------------
  82. //
  83. // CDocument::HandleSave
  84. //
  85. //---------------------------------------------------------------
  86. bool CDocument::HandleSave()
  87. {
  88.     PRECONDITION(true);
  89.     
  90.     if (mRsrcRefNum != kNoFileRefNum) {                    
  91.         CloseResFile(mRsrcRefNum);                    // so OnSave can delete the old file
  92.         mRsrcRefNum = kNoFileRefNum;
  93.     }
  94.  
  95.     bool saved = Inherited::HandleSave();            // note that this traps exceptions
  96.  
  97.     ASSERT(mRsrcRefNum == kNoFileRefNum);
  98.  
  99.     mRsrcRefNum = FSpOpenResFile(mFileSpec, fsCurPerm);
  100.     ASSERT(ResError() == noErr);
  101.     
  102.     POSTCONDITION(true);
  103.     
  104.     return saved;
  105. }
  106.  
  107.  
  108. //---------------------------------------------------------------
  109. //
  110. // CDocument::HandleSaveAs
  111. //
  112. //---------------------------------------------------------------
  113. bool CDocument::HandleSaveAs()
  114. {
  115.     PRECONDITION(true);
  116.     
  117.     if (mRsrcRefNum != kNoFileRefNum) {                    
  118.         CloseResFile(mRsrcRefNum);                    // so OnSave can delete the old file
  119.         mRsrcRefNum = kNoFileRefNum;
  120.     }
  121.  
  122.     bool saved = Inherited::HandleSaveAs();            // note that this traps exceptions
  123.  
  124.     ASSERT(mRsrcRefNum == kNoFileRefNum);
  125.  
  126.     mRsrcRefNum = FSpOpenResFile(mFileSpec, fsCurPerm);
  127.     ASSERT(ResError() == noErr);
  128.     
  129.     POSTCONDITION(true);
  130.     
  131.     return saved;
  132. }
  133.  
  134.  
  135. //---------------------------------------------------------------
  136. //
  137. // CDocument::GetUniqueID
  138. //
  139. // Attempts to return the id of one of the 'View' or 'Wind' 
  140. // resources. (This will clash with an id in another document only 
  141. // if the 'View' or 'Wind' resource also clashes).
  142. //
  143. //---------------------------------------------------------------
  144. ResID CDocument::GetUniqueID(ResType type) const
  145. {
  146.     ResID id;
  147.     
  148.     if (mWindowMap->GetNumResources() > 0)
  149.         id = mWindowMap->GetLastResourceID();
  150.     
  151.     else if (mViewMap->GetNumResources() > 0)
  152.         id = mViewMap->GetLastResourceID();
  153.         
  154.     else if (mTraitsMap->GetNumResources() > 0)
  155.         id = mTraitsMap->GetLastResourceID();
  156.     
  157.     else if (mPensMap->GetNumResources() > 0)
  158.         id = mPensMap->GetLastResourceID();
  159.     
  160.     else
  161.         id = Unique1ID(type);
  162.     
  163.     return id;
  164. }
  165.  
  166. #pragma mark ﾊ
  167.  
  168. //---------------------------------------------------------------
  169. //
  170. // CDocument::Invariant
  171. //
  172. //---------------------------------------------------------------
  173. void CDocument::Invariant() const
  174. {
  175.     Inherited::Invariant();
  176.  
  177.     if (mOnDisk)
  178.         ASSERT(mRsrcRefNum != kNoFileRefNum);
  179.     else
  180.         ASSERT(mRsrcRefNum == kNoFileRefNum);
  181. }
  182.  
  183.  
  184. //---------------------------------------------------------------
  185. //
  186. // CDocument::OnBroadcast
  187. //
  188. //---------------------------------------------------------------
  189. void CDocument::OnBroadcast(const SResourceMapMessage& mesg)
  190. {
  191.     #pragma unused(mesg)
  192.     
  193.     if (!this->IsDirty())
  194.         this->OnSetDirty(true);
  195.     
  196.     this->Broadcast(SDocumentMessage(this, kChangedDocument));
  197. }
  198.  
  199.  
  200. //---------------------------------------------------------------
  201. //
  202. // CDocument::OnSetDirty
  203. //
  204. //---------------------------------------------------------------
  205. void CDocument::OnSetDirty(bool dirty)
  206. {
  207.     Inherited::OnSetDirty(dirty);
  208.     
  209.     if (!dirty) {
  210.         mWindowMap->ClearDirty();
  211.         mViewMap->ClearDirty();
  212.         mTraitsMap->ClearDirty();
  213.         mPensMap->ClearDirty();
  214.     }
  215. }
  216.  
  217.  
  218. //---------------------------------------------------------------
  219. //
  220. // CDocument::OnSaveRsrcFork
  221. //
  222. //---------------------------------------------------------------
  223. void CDocument::OnSaveRsrcFork(const TFileSpec& spec)
  224. {
  225.     if (mRsrcRefNum == kNoFileRefNum) 
  226.         Inherited::OnSaveRsrcFork(spec);
  227.         
  228.     else {
  229.         TSaveResFile save(mRsrcRefNum);
  230.         this->OnSaveResources();
  231.     }
  232. }
  233.  
  234.  
  235. //---------------------------------------------------------------
  236. //
  237. // CDocument::OnOpenResources
  238. //
  239. //---------------------------------------------------------------
  240. void CDocument::OnOpenResources()            
  241. {
  242.     Inherited::OnOpenResources();
  243.     
  244.     mWindowMap->ReadResources();
  245.     mViewMap->ReadResources();
  246.     mTraitsMap->ReadResources();
  247.     mPensMap->ReadResources();
  248.  
  249.     mCustomPanes->ReadResources();
  250. }
  251.  
  252.  
  253. //---------------------------------------------------------------
  254. //
  255. // CDocument::OnSaveResources
  256. //
  257. //---------------------------------------------------------------
  258. void CDocument::OnSaveResources()            
  259. {
  260.     Inherited::OnSaveResources();        
  261.     
  262.     mWindowMap->WriteResources();
  263.     mViewMap->WriteResources();
  264.     mTraitsMap->WriteResources();
  265.     mPensMap->WriteResources();
  266.     
  267.     ResID id = this->GetUniqueID(CCustomClasses::kType);
  268.     mCustomPanes->WriteResources(id);
  269. }
  270.  
  271.  
  272. //---------------------------------------------------------------
  273. //
  274. // CDocument::OnMenuCommand
  275. //
  276. //---------------------------------------------------------------
  277. bool CDocument::OnMenuCommand(const MenuCommand& command)
  278. {
  279.     bool handled = true;
  280.     
  281.     if (command == "Add Custom Class") {
  282.         static string base = "TView";
  283.         string derived = base;
  284.         
  285.         if (CCustomClassDialog::Pose(&base, &derived)) 
  286.             mCustomPanes->AddClass(derived, base);
  287.  
  288.     } else if (command == "Remove Custom Class") {
  289.         string customClass;                                // ･･ﾊuse some sort of picker dialog
  290.         
  291.         if (::GetString(LoadAppString("Class to Delete:"), &customClass)) {
  292.             if (mCustomPanes->HasClass(customClass))
  293.                 mCustomPanes->RemoveClass(customClass);
  294.             else
  295.                 DoStop(LoadAppString("Couldn't delete the class"), LoadAppString("Couldn't find ") + customClass);
  296.         }
  297.     
  298.     } else if (mCustomPanes->HasClass(command)) {
  299.         string baseClass = mCustomPanes->GetBaseClass(command);
  300.         
  301.         if (::GetString(LoadAppString("Base Class:"), &baseClass)) {
  302.             mCustomPanes->RemoveClass(command);
  303.             mCustomPanes->AddClass(command, baseClass);
  304.         }
  305.     
  306.     } else
  307.         handled = Inherited::OnMenuCommand(command);
  308.         
  309.     return handled;
  310. }
  311.  
  312.         
  313. //---------------------------------------------------------------
  314. //
  315. // CDocument::OnCommandStatus
  316. //
  317. //---------------------------------------------------------------
  318. bool CDocument::OnCommandStatus(const MenuCommand& command, SCommandStatus& status)
  319. {
  320.     bool handled = true;
  321.     
  322.     if (command == "Custom Classes")
  323.         status.enabled = true;
  324.     
  325.     else if (command == "Add Custom Class")
  326.         status.enabled = true;
  327.     
  328.     else if (command == "Remove Custom Class")
  329.         status.enabled = mCustomPanes->GetNumClasses() > 0;
  330.     
  331.     else if (mCustomPanes->HasClass(command))
  332.         status.enabled = true;
  333.     
  334.     else
  335.         handled = Inherited::OnCommandStatus(command, status);
  336.         
  337.     return handled;
  338. }
  339.  
  340.  
  341.