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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: wx/xrc/xmlres.h
3 // Purpose: XML resources
4 // Author: Vaclav Slavik
5 // Created: 2000/03/05
6 // RCS-ID: $Id$
7 // Copyright: (c) 2000 Vaclav Slavik
8 // Licence: wxWindows licence
9 /////////////////////////////////////////////////////////////////////////////
10
11 #ifndef _WX_XMLRES_H_
12 #define _WX_XMLRES_H_
13
14 #include "wx/defs.h"
15
16 #if wxUSE_XRC
17
18 #include "wx/string.h"
19 #include "wx/dynarray.h"
20 #include "wx/arrstr.h"
21 #include "wx/datetime.h"
22 #include "wx/list.h"
23 #include "wx/gdicmn.h"
24 #include "wx/filesys.h"
25 #include "wx/bitmap.h"
26 #include "wx/icon.h"
27 #include "wx/artprov.h"
28 #include "wx/colour.h"
29 #include "wx/animate.h"
30 #include "wx/vector.h"
31
32 #include "wx/xml/xml.h"
33
34 class WXDLLIMPEXP_FWD_BASE wxFileName;
35
36 class WXDLLIMPEXP_FWD_CORE wxIconBundle;
37 class WXDLLIMPEXP_FWD_CORE wxImageList;
38 class WXDLLIMPEXP_FWD_CORE wxMenu;
39 class WXDLLIMPEXP_FWD_CORE wxMenuBar;
40 class WXDLLIMPEXP_FWD_CORE wxDialog;
41 class WXDLLIMPEXP_FWD_CORE wxPanel;
42 class WXDLLIMPEXP_FWD_CORE wxWindow;
43 class WXDLLIMPEXP_FWD_CORE wxFrame;
44 class WXDLLIMPEXP_FWD_CORE wxToolBar;
45
46 class WXDLLIMPEXP_FWD_XRC wxXmlResourceHandler;
47 class WXDLLIMPEXP_FWD_XRC wxXmlSubclassFactory;
48 class wxXmlSubclassFactories;
49 class wxXmlResourceModule;
50 class wxXmlResourceDataRecords;
51
52 // These macros indicate current version of XML resources (this information is
53 // encoded in root node of XRC file as "version" property).
54 //
55 // Rules for increasing version number:
56 // - change it only if you made incompatible change to the format. Addition
57 // of new attribute to control handler is _not_ incompatible change, because
58 // older versions of the library may ignore it.
59 // - if you change version number, follow these steps:
60 // - set major, minor and release numbers to respective version numbers of
61 // the wxWidgets library (see wx/version.h)
62 // - reset revision to 0 unless the first three are same as before,
63 // in which case you should increase revision by one
64 #define WX_XMLRES_CURRENT_VERSION_MAJOR 2
65 #define WX_XMLRES_CURRENT_VERSION_MINOR 5
66 #define WX_XMLRES_CURRENT_VERSION_RELEASE 3
67 #define WX_XMLRES_CURRENT_VERSION_REVISION 0
68 #define WX_XMLRES_CURRENT_VERSION_STRING wxT("2.5.3.0")
69
70 #define WX_XMLRES_CURRENT_VERSION \
71 (WX_XMLRES_CURRENT_VERSION_MAJOR * 256*256*256 + \
72 WX_XMLRES_CURRENT_VERSION_MINOR * 256*256 + \
73 WX_XMLRES_CURRENT_VERSION_RELEASE * 256 + \
74 WX_XMLRES_CURRENT_VERSION_REVISION)
75
76 enum wxXmlResourceFlags
77 {
78 wxXRC_USE_LOCALE = 1,
79 wxXRC_NO_SUBCLASSING = 2,
80 wxXRC_NO_RELOADING = 4
81 };
82
83 // This class holds XML resources from one or more .xml files
84 // (or derived forms, either binary or zipped -- see manual for
85 // details).
86 class WXDLLIMPEXP_XRC wxXmlResource : public wxObject
87 {
88 public:
89 // Constructor.
90 // Flags: wxXRC_USE_LOCALE
91 // translatable strings will be translated via _()
92 // using the given domain if specified
93 // wxXRC_NO_SUBCLASSING
94 // subclass property of object nodes will be ignored
95 // (useful for previews in XRC editors)
96 // wxXRC_NO_RELOADING
97 // don't check the modification time of the XRC files and
98 // reload them if they have changed on disk
99 wxXmlResource(int flags = wxXRC_USE_LOCALE,
100 const wxString& domain = wxEmptyString);
101
102 // Constructor.
103 // Flags: wxXRC_USE_LOCALE
104 // translatable strings will be translated via _()
105 // using the given domain if specified
106 // wxXRC_NO_SUBCLASSING
107 // subclass property of object nodes will be ignored
108 // (useful for previews in XRC editors)
109 wxXmlResource(const wxString& filemask, int flags = wxXRC_USE_LOCALE,
110 const wxString& domain = wxEmptyString);
111
112 // Destructor.
113 virtual ~wxXmlResource();
114
115 // Loads resources from XML files that match given filemask.
116 // This method understands wxFileSystem URLs if wxUSE_FILESYS.
117 bool Load(const wxString& filemask);
118
119 // Loads resources from single XRC file.
120 bool LoadFile(const wxFileName& file);
121
122 // Loads all XRC files from a directory.
123 bool LoadAllFiles(const wxString& dirname);
124
125 // Unload resource from the given XML file (wildcards not allowed)
126 bool Unload(const wxString& filename);
127
128 // Initialize handlers for all supported controls/windows. This will
129 // make the executable quite big because it forces linking against
130 // most of the wxWidgets library.
131 void InitAllHandlers();
132
133 // Initialize only a specific handler (or custom handler). Convention says
134 // that handler name is equal to the control's name plus 'XmlHandler', for
135 // example wxTextCtrlXmlHandler, wxHtmlWindowXmlHandler. The XML resource
136 // compiler (xmlres) can create include file that contains initialization
137 // code for all controls used within the resource.
138 void AddHandler(wxXmlResourceHandler *handler);
139
140 // Add a new handler at the begining of the handler list
141 void InsertHandler(wxXmlResourceHandler *handler);
142
143 // Removes all handlers
144 void ClearHandlers();
145
146 // Registers subclasses factory for use in XRC. This function is not meant
147 // for public use, please see the comment above wxXmlSubclassFactory
148 // definition.
149 static void AddSubclassFactory(wxXmlSubclassFactory *factory);
150
151 // Loads menu from resource. Returns NULL on failure.
152 wxMenu *LoadMenu(const wxString& name);
153
154 // Loads menubar from resource. Returns NULL on failure.
155 wxMenuBar *LoadMenuBar(wxWindow *parent, const wxString& name);
156
157 // Loads menubar from resource. Returns NULL on failure.
158 wxMenuBar *LoadMenuBar(const wxString& name) { return LoadMenuBar(NULL, name); }
159
160 #if wxUSE_TOOLBAR
161 // Loads a toolbar.
162 wxToolBar *LoadToolBar(wxWindow *parent, const wxString& name);
163 #endif
164
165 // Loads a dialog. dlg points to parent window (if any).
166 wxDialog *LoadDialog(wxWindow *parent, const wxString& name);
167
168 // Loads a dialog. dlg points to parent window (if any). This form
169 // is used to finish creation of already existing instance (main reason
170 // for this is that you may want to use derived class with new event table)
171 // Example (typical usage):
172 // MyDialog dlg;
173 // wxTheXmlResource->LoadDialog(&dlg, mainFrame, "my_dialog");
174 // dlg->ShowModal();
175 bool LoadDialog(wxDialog *dlg, wxWindow *parent, const wxString& name);
176
177 // Loads a panel. panel points to parent window (if any).
178 wxPanel *LoadPanel(wxWindow *parent, const wxString& name);
179
180 // Loads a panel. panel points to parent window (if any). This form
181 // is used to finish creation of already existing instance.
182 bool LoadPanel(wxPanel *panel, wxWindow *parent, const wxString& name);
183
184 // Loads a frame.
185 wxFrame *LoadFrame(wxWindow* parent, const wxString& name);
186 bool LoadFrame(wxFrame* frame, wxWindow *parent, const wxString& name);
187
188 // Load an object from the resource specifying both the resource name and
189 // the classname. This lets you load nonstandard container windows.
190 wxObject *LoadObject(wxWindow *parent, const wxString& name,
191 const wxString& classname)
192 {
193 return DoLoadObject(parent, name, classname, false /* !recursive */);
194 }
195
196 // Load an object from the resource specifying both the resource name and
197 // the classname. This form lets you finish the creation of an existing
198 // instance.
199 bool LoadObject(wxObject *instance,
200 wxWindow *parent,
201 const wxString& name,
202 const wxString& classname)
203 {
204 return DoLoadObject(instance, parent, name, classname, false);
205 }
206
207 // These versions of LoadObject() look for the object with the given name
208 // recursively (breadth first) and can be used to instantiate an individual
209 // control defined anywhere in an XRC file. No check is done that the name
210 // is unique, it's up to the caller to ensure this.
211 wxObject *LoadObjectRecursively(wxWindow *parent,
212 const wxString& name,
213 const wxString& classname)
214 {
215 return DoLoadObject(parent, name, classname, true /* recursive */);
216 }
217
218 bool LoadObjectRecursively(wxObject *instance,
219 wxWindow *parent,
220 const wxString& name,
221 const wxString& classname)
222 {
223 return DoLoadObject(instance, parent, name, classname, true);
224 }
225
226 // Loads a bitmap resource from a file.
227 wxBitmap LoadBitmap(const wxString& name);
228
229 // Loads an icon resource from a file.
230 wxIcon LoadIcon(const wxString& name);
231
232 // Attaches an unknown control to the given panel/window/dialog.
233 // Unknown controls are used in conjunction with <object class="unknown">.
234 bool AttachUnknownControl(const wxString& name, wxWindow *control,
235 wxWindow *parent = NULL);
236
237 // Returns a numeric ID that is equivalent to the string ID used in an XML
238 // resource. If an unknown str_id is requested (i.e. other than wxID_XXX
239 // or integer), a new record is created which associates the given string
240 // with a number. If value_if_not_found == wxID_NONE, the number is obtained via
241 // wxWindow::NewControlId(). Otherwise value_if_not_found is used.
242 // Macro XRCID(name) is provided for convenient use in event tables.
243 static int GetXRCID(const wxString& str_id, int value_if_not_found = wxID_NONE)
244 { return DoGetXRCID(str_id.mb_str(), value_if_not_found); }
245
246 // version for internal use only
247 static int DoGetXRCID(const char *str_id, int value_if_not_found = wxID_NONE);
248
249
250 // Find the string ID with the given numeric value, returns an empty string
251 // if no such ID is found.
252 //
253 // Notice that unlike GetXRCID(), which is fast, this operation is slow as
254 // it checks all the IDs used in XRC.
255 static wxString FindXRCIDById(int numId);
256
257
258 // Returns version information (a.b.c.d = d+ 256*c + 256^2*b + 256^3*a).
259 long GetVersion() const { return m_version; }
260
261 // Compares resources version to argument. Returns -1 if resources version
262 // is less than the argument, +1 if greater and 0 if they equal.
263 int CompareVersion(int major, int minor, int release, int revision) const
264 { return GetVersion() -
265 (major*256*256*256 + minor*256*256 + release*256 + revision); }
266
267 //// Singleton accessors.
268
269 // Gets the global resources object or creates one if none exists.
270 static wxXmlResource *Get();
271
272 // Sets the global resources object and returns a pointer to the previous one (may be NULL).
273 static wxXmlResource *Set(wxXmlResource *res);
274
275 // Returns flags, which may be a bitlist of wxXRC_USE_LOCALE and wxXRC_NO_SUBCLASSING.
276 int GetFlags() const { return m_flags; }
277 // Set flags after construction.
278 void SetFlags(int flags) { m_flags = flags; }
279
280 // Get/Set the domain to be passed to the translation functions, defaults
281 // to empty string (no domain).
282 const wxString& GetDomain() const { return m_domain; }
283 void SetDomain(const wxString& domain);
284
285
286 // This function returns the wxXmlNode containing the definition of the
287 // object with the given name or NULL.
288 //
289 // It can be used to access additional information defined in the XRC file
290 // and not used by wxXmlResource itself.
291 const wxXmlNode *GetResourceNode(const wxString& name) const
292 { return GetResourceNodeAndLocation(name, wxString(), true); }
293
294 protected:
295 // reports input error at position 'context'
296 void ReportError(const wxXmlNode *context, const wxString& message);
297
298 // override this in derived class to customize errors reporting
299 virtual void DoReportError(const wxString& xrcFile, const wxXmlNode *position,
300 const wxString& message);
301
302 // Load the contents of a single file and returns its contents as a new
303 // wxXmlDocument (which will be owned by caller) on success or NULL.
304 wxXmlDocument *DoLoadFile(const wxString& file);
305
306 // Scans the resources list for unloaded files and loads them. Also reloads
307 // files that have been modified since last loading.
308 bool UpdateResources();
309
310
311 // Common implementation of GetResourceNode() and FindResource(): searches
312 // all top-level or all (if recursive == true) nodes if all loaded XRC
313 // files and returns the node, if found, as well as the path of the file it
314 // was found in if path is non-NULL
315 wxXmlNode *GetResourceNodeAndLocation(const wxString& name,
316 const wxString& classname,
317 bool recursive = false,
318 wxString *path = NULL) const;
319
320
321 // Note that these functions are used outside of wxWidgets itself, e.g.
322 // there are several known cases of inheriting from wxXmlResource just to
323 // be able to call FindResource() so we keep them for compatibility even if
324 // their names are not really consistent with GetResourceNode() public
325 // function and FindResource() is also non-const because it changes the
326 // current path of m_curFileSystem to ensure that relative paths work
327 // correctly when CreateResFromNode() is called immediately afterwards
328 // (something const public function intentionally does not do)
329
330 // Returns the node containing the resource with the given name and class
331 // name unless it's empty (then any class matches) or NULL if not found.
332 wxXmlNode *FindResource(const wxString& name, const wxString& classname,
333 bool recursive = false);
334
335 // Helper function used by FindResource() to look under the given node.
336 wxXmlNode *DoFindResource(wxXmlNode *parent, const wxString& name,
337 const wxString& classname, bool recursive) const;
338
339 // Creates a resource from information in the given node
340 // (Uses only 'handlerToUse' if != NULL)
341 wxObject *CreateResFromNode(wxXmlNode *node, wxObject *parent,
342 wxObject *instance = NULL,
343 wxXmlResourceHandler *handlerToUse = NULL)
344 {
345 return node ? DoCreateResFromNode(*node, parent, instance, handlerToUse)
346 : NULL;
347 }
348
349 // Helper of Load() and Unload(): returns the URL corresponding to the
350 // given file if it's indeed a file, otherwise returns the original string
351 // unmodified
352 static wxString ConvertFileNameToURL(const wxString& filename);
353
354 // loading resources from archives is impossible without wxFileSystem
355 #if wxUSE_FILESYSTEM
356 // Another helper: detect if the filename is a ZIP or XRS file
357 static bool IsArchive(const wxString& filename);
358 #endif // wxUSE_FILESYSTEM
359
360 private:
361 wxXmlResourceDataRecords& Data() { return *m_data; }
362 const wxXmlResourceDataRecords& Data() const { return *m_data; }
363
364 // the real implementation of CreateResFromNode(): this should be only
365 // called if node is non-NULL
366 wxObject *DoCreateResFromNode(wxXmlNode& node,
367 wxObject *parent,
368 wxObject *instance,
369 wxXmlResourceHandler *handlerToUse = NULL);
370
371 // common part of LoadObject() and LoadObjectRecursively()
372 wxObject *DoLoadObject(wxWindow *parent,
373 const wxString& name,
374 const wxString& classname,
375 bool recursive);
376 bool DoLoadObject(wxObject *instance,
377 wxWindow *parent,
378 const wxString& name,
379 const wxString& classname,
380 bool recursive);
381
382 private:
383 long m_version;
384
385 int m_flags;
386 wxVector<wxXmlResourceHandler*> m_handlers;
387 wxXmlResourceDataRecords *m_data;
388 #if wxUSE_FILESYSTEM
389 wxFileSystem m_curFileSystem;
390 wxFileSystem& GetCurFileSystem() { return m_curFileSystem; }
391 #endif
392
393 // domain to pass to translation functions, if any.
394 wxString m_domain;
395
396 friend class wxXmlResourceHandler;
397 friend class wxXmlResourceModule;
398 friend class wxIdRangeManager;
399 friend class wxIdRange;
400
401 static wxXmlSubclassFactories *ms_subclassFactories;
402
403 // singleton instance:
404 static wxXmlResource *ms_instance;
405 };
406
407
408 // This macro translates string identifier (as used in XML resource,
409 // e.g. <menuitem id="my_menu">...</menuitem>) to integer id that is needed by
410 // wxWidgets event tables.
411 // Example:
412 // BEGIN_EVENT_TABLE(MyFrame, wxFrame)
413 // EVT_MENU(XRCID("quit"), MyFrame::OnQuit)
414 // EVT_MENU(XRCID("about"), MyFrame::OnAbout)
415 // EVT_MENU(XRCID("new"), MyFrame::OnNew)
416 // EVT_MENU(XRCID("open"), MyFrame::OnOpen)
417 // END_EVENT_TABLE()
418
419 #define XRCID(str_id) \
420 wxXmlResource::DoGetXRCID(str_id)
421
422
423 // This macro returns pointer to particular control in dialog
424 // created using XML resources. You can use it to set/get values from
425 // controls.
426 // Example:
427 // wxDialog dlg;
428 // wxXmlResource::Get()->LoadDialog(&dlg, mainFrame, "my_dialog");
429 // XRCCTRL(dlg, "my_textctrl", wxTextCtrl)->SetValue(wxT("default value"));
430
431 #define XRCCTRL(window, id, type) \
432 (wxStaticCast((window).FindWindow(XRCID(id)), type))
433
434 // This macro returns pointer to sizer item
435 // Example:
436 //
437 // <object class="spacer" name="area">
438 // <size>400, 300</size>
439 // </object>
440 //
441 // wxSizerItem* item = XRCSIZERITEM(*this, "area")
442
443 #define XRCSIZERITEM(window, id) \
444 ((window).GetSizer() ? (window).GetSizer()->GetItemById(XRCID(id)) : NULL)
445
446 // wxXmlResourceHandler is an abstract base class for resource handlers
447 // capable of creating a control from an XML node.
448
449 class WXDLLIMPEXP_XRC wxXmlResourceHandler : public wxObject
450 {
451 DECLARE_ABSTRACT_CLASS(wxXmlResourceHandler)
452 public:
453 // Constructor.
454 wxXmlResourceHandler();
455
456 // Destructor.
457 virtual ~wxXmlResourceHandler() {}
458
459 // Creates an object (menu, dialog, control, ...) from an XML node.
460 // Should check for validity.
461 // parent is a higher-level object (usually window, dialog or panel)
462 // that is often necessary to create the resource.
463 // If instance is non-NULL it should not create a new instance via 'new' but
464 // should rather use this one, and call its Create method.
465 wxObject *CreateResource(wxXmlNode *node, wxObject *parent,
466 wxObject *instance);
467
468 // This one is called from CreateResource after variables
469 // were filled.
470 virtual wxObject *DoCreateResource() = 0;
471
472 // Returns true if it understands this node and can create
473 // a resource from it, false otherwise.
474 virtual bool CanHandle(wxXmlNode *node) = 0;
475
476 // Sets the parent resource.
477 void SetParentResource(wxXmlResource *res) { m_resource = res; }
478
479 protected:
480 wxXmlResource *m_resource;
481 wxArrayString m_styleNames;
482 wxArrayInt m_styleValues;
483
484 // Variables (filled by CreateResource)
485 wxXmlNode *m_node;
486 wxString m_class;
487 wxObject *m_parent, *m_instance;
488 wxWindow *m_parentAsWindow;
489
490 // --- Handy methods:
491
492 // Returns true if the node has a property class equal to classname,
493 // e.g. <object class="wxDialog">.
494 static bool IsOfClass(wxXmlNode *node, const wxString& classname);
495
496 // Gets node content from wxXML_ENTITY_NODE
497 // The problem is, <tag>content<tag> is represented as
498 // wxXML_ENTITY_NODE name="tag", content=""
499 // |-- wxXML_TEXT_NODE or
500 // wxXML_CDATA_SECTION_NODE name="" content="content"
501 wxString GetNodeContent(const wxXmlNode *node);
502
503 // Check to see if a parameter exists.
504 bool HasParam(const wxString& param);
505
506 // Finds the node or returns NULL.
507 wxXmlNode *GetParamNode(const wxString& param);
508
509 // Finds the parameter value or returns the empty string.
510 wxString GetParamValue(const wxString& param);
511
512 // Returns the parameter value from given node.
513 wxString GetParamValue(const wxXmlNode* node);
514
515 // Add a style flag (e.g. wxMB_DOCKABLE) to the list of flags
516 // understood by this handler.
517 void AddStyle(const wxString& name, int value);
518
519 // Add styles common to all wxWindow-derived classes.
520 void AddWindowStyles();
521
522 // Gets style flags from text in form "flag | flag2| flag3 |..."
523 // Only understands flags added with AddStyle
524 int GetStyle(const wxString& param = wxT("style"), int defaults = 0);
525
526 // Gets text from param and does some conversions:
527 // - replaces \n, \r, \t by respective chars (according to C syntax)
528 // - replaces _ by & and __ by _ (needed for _File => &File because of XML)
529 // - calls wxGetTranslations (unless disabled in wxXmlResource)
530 wxString GetText(const wxString& param, bool translate = true);
531
532 // Returns the XRCID.
533 int GetID();
534
535 // Returns the resource name.
536 wxString GetName();
537
538 // Gets a bool flag (1, t, yes, on, true are true, everything else is false).
539 bool GetBool(const wxString& param, bool defaultv = false);
540
541 // Gets an integer value from the parameter.
542 long GetLong(const wxString& param, long defaultv = 0);
543
544 // Gets a float value from the parameter.
545 float GetFloat(const wxString& param, float defaultv = 0);
546
547 // Gets colour in HTML syntax (#RRGGBB).
548 wxColour GetColour(const wxString& param, const wxColour& defaultv = wxNullColour);
549
550 // Gets the size (may be in dialog units).
551 wxSize GetSize(const wxString& param = wxT("size"),
552 wxWindow *windowToUse = NULL);
553
554 // Gets the position (may be in dialog units).
555 wxPoint GetPosition(const wxString& param = wxT("pos"));
556
557 // Gets a dimension (may be in dialog units).
558 wxCoord GetDimension(const wxString& param, wxCoord defaultv = 0,
559 wxWindow *windowToUse = NULL);
560
561 // Gets a bitmap.
562 wxBitmap GetBitmap(const wxString& param = wxT("bitmap"),
563 const wxArtClient& defaultArtClient = wxART_OTHER,
564 wxSize size = wxDefaultSize);
565
566 // Gets a bitmap from an XmlNode.
567 wxBitmap GetBitmap(const wxXmlNode* node,
568 const wxArtClient& defaultArtClient = wxART_OTHER,
569 wxSize size = wxDefaultSize);
570
571 // Gets an icon.
572 wxIcon GetIcon(const wxString& param = wxT("icon"),
573 const wxArtClient& defaultArtClient = wxART_OTHER,
574 wxSize size = wxDefaultSize);
575
576 // Gets an icon from an XmlNode.
577 wxIcon GetIcon(const wxXmlNode* node,
578 const wxArtClient& defaultArtClient = wxART_OTHER,
579 wxSize size = wxDefaultSize);
580
581 // Gets an icon bundle.
582 wxIconBundle GetIconBundle(const wxString& param,
583 const wxArtClient& defaultArtClient = wxART_OTHER);
584
585 // Gets an image list.
586 wxImageList *GetImageList(const wxString& param = wxT("imagelist"));
587
588 #if wxUSE_ANIMATIONCTRL
589 // Gets an animation.
590 wxAnimation GetAnimation(const wxString& param = wxT("animation"));
591 #endif
592
593 // Gets a font.
594 wxFont GetFont(const wxString& param = wxT("font"));
595
596 // Gets the value of a boolean attribute (only "0" and "1" are valid values)
597 bool GetBoolAttr(const wxString& attr, bool defaultv);
598
599
600 // Sets common window options.
601 void SetupWindow(wxWindow *wnd);
602
603 // Creates children.
604 void CreateChildren(wxObject *parent, bool this_hnd_only = false);
605
606 // Helper function.
607 void CreateChildrenPrivately(wxObject *parent, wxXmlNode *rootnode = NULL);
608
609 // Creates a resource from a node.
610 wxObject *CreateResFromNode(wxXmlNode *node,
611 wxObject *parent, wxObject *instance = NULL)
612 { return m_resource->CreateResFromNode(node, parent, instance); }
613
614 // helper
615 #if wxUSE_FILESYSTEM
616 wxFileSystem& GetCurFileSystem() { return m_resource->GetCurFileSystem(); }
617 #endif
618
619 // reports input error at position 'context'
620 void ReportError(wxXmlNode *context, const wxString& message);
621 // reports input error at m_node
622 void ReportError(const wxString& message);
623 // reports input error when parsing parameter with given name
624 void ReportParamError(const wxString& param, const wxString& message);
625 };
626
627
628 // Programmer-friendly macros for writing XRC handlers:
629
630 #define XRC_ADD_STYLE(style) AddStyle(wxT(#style), style)
631
632 #define XRC_MAKE_INSTANCE(variable, classname) \
633 classname *variable = NULL; \
634 if (m_instance) \
635 variable = wxStaticCast(m_instance, classname); \
636 if (!variable) \
637 variable = new classname;
638
639
640 // FIXME -- remove this $%^#$%#$@# as soon as Ron checks his changes in!!
641 WXDLLIMPEXP_XRC void wxXmlInitResourceModule();
642
643
644 // This class is used to create instances of XRC "object" nodes with "subclass"
645 // property. It is _not_ supposed to be used by XRC users, you should instead
646 // register your subclasses via wxWidgets' RTTI mechanism. This class is useful
647 // only for language bindings developer who need a way to implement subclassing
648 // in wxWidgets ports that don't support wxRTTI (e.g. wxPython).
649 class WXDLLIMPEXP_XRC wxXmlSubclassFactory
650 {
651 public:
652 // Try to create instance of given class and return it, return NULL on
653 // failure:
654 virtual wxObject *Create(const wxString& className) = 0;
655 virtual ~wxXmlSubclassFactory() {}
656 };
657
658
659 /* -------------------------------------------------------------------------
660 Backward compatibility macros. Do *NOT* use, they may disappear in future
661 versions of the XRC library!
662 ------------------------------------------------------------------------- */
663
664 #endif // wxUSE_XRC
665
666 #endif // _WX_XMLRES_H_