include/wx/xrc/xmlres.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #ifdef __GNUG__
  15 #pragma interface "xmlres.h"
  16 #endif
  17
  18 #include "wx/defs.h"
  19 #include "wx/string.h"
  20 #include "wx/dynarray.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
  28 #include "wx/xrc/xml.h"
  29
  30 class WXDLLEXPORT wxMenu;
  31 class WXDLLEXPORT wxMenuBar;
  32 class WXDLLEXPORT wxDialog;
  33 class WXDLLEXPORT wxPanel;
  34 class WXDLLEXPORT wxWindow;
  35 class WXDLLEXPORT wxFrame;
  36 class WXDLLEXPORT wxToolBar;
  37
  38 class WXXMLDLLEXPORT wxXmlResourceHandler;
  39
  40
  41 // These macros indicate current version of XML resources (this information is
  42 // encoded in root node of XRC file as "version" property).
  43 //
  44 // Rules for increasing version number:
  45 //   - change it only if you made incompatible change to the format. Addition of new
  46 //     attribute to control handler is _not_ incompatible change, because older
  47 //     versions of the library may ignore it.
  48 //   - if you change version number, follow these steps:
  49 //       - set major, minor and release numbers to respective version numbers of
  50 //         the wxWindows library (see wx/version.h)
  51 //       - reset revision to 0 unless the first three are same as before, in which
  52 //         case you should increase revision by one
  53 #define WX_XMLRES_CURRENT_VERSION_MAJOR            2
  54 #define WX_XMLRES_CURRENT_VERSION_MINOR            3
  55 #define WX_XMLRES_CURRENT_VERSION_RELEASE          0
  56 #define WX_XMLRES_CURRENT_VERSION_REVISION         1
  57 #define WX_XMLRES_CURRENT_VERSION_STRING    "2.3.0.1"
  58
  59 #define WX_XMLRES_CURRENT_VERSION \
  60                 (WX_XMLRES_CURRENT_VERSION_MAJOR * 256*256*256 + \
  61                  WX_XMLRES_CURRENT_VERSION_MINOR * 256*256 + \
  62                  WX_XMLRES_CURRENT_VERSION_RELEASE * 256 + \
  63                  WX_XMLRES_CURRENT_VERSION_REVISION)
  64
  65 class WXXMLDLLEXPORT wxXmlResourceDataRecord
  66 {
  67 public:
  68     wxXmlResourceDataRecord() : Doc(NULL), Time(wxDateTime::Now()) {}
  69     ~wxXmlResourceDataRecord() {delete Doc;}
  70
  71     wxString File;
  72     wxXmlDocument *Doc;
  73     wxDateTime Time;
  74 };
  75
  76
  77 #ifdef WXXMLISDLL
  78 WX_DECLARE_EXPORTED_OBJARRAY(wxXmlResourceDataRecord, wxXmlResourceDataRecords);
  79 #else
  80 WX_DECLARE_OBJARRAY(wxXmlResourceDataRecord, wxXmlResourceDataRecords);
  81 #endif
  82
  83
  84 // This class holds XML resources from one or more .xml files
  85 // (or derived forms, either binary or zipped -- see manual for
  86 // details).
  87
  88 class WXXMLDLLEXPORT wxXmlResource : public wxObject
  89 {
  90 public:
  91     // Ctor. If use_locale is TRUE, translatable strings are
  92     // translated via _(). You can disable it by passing use_locale=FALSE
  93     // (for example if you provide resource file for each locale)
  94     wxXmlResource(bool use_locale = TRUE);
  95     wxXmlResource(const wxString& filemask, bool use_locale = TRUE);
  96     ~wxXmlResource();
  97
  98     // Loads resources from XML files that match given filemask.
  99     // This method understands VFS (see filesys.h).
 100     bool Load(const wxString& filemask);
 101
 102     // Initialize handlers for all supported controls/windows. This will
 103     // make the executable quite big because it forces linking against
 104     // most of wxWin library
 105     void InitAllHandlers();
 106
 107     // Initialize only specific handler (or custom handler). Convention says
 108     // that handler name is equal to control's name plus 'XmlHandler', e.g.
 109     // wxTextCtrlXmlHandler, wxHtmlWindowXmlHandler. XML resource compiler
 110     // (xmlres) can create include file that contains initialization code for
 111     // all controls used within the resource.
 112     void AddHandler(wxXmlResourceHandler *handler);
 113
 114     // Removes all handlers
 115     void ClearHandlers();
 116
 117     // Loads menu from resource. Returns NULL on failure.
 118     wxMenu *LoadMenu(const wxString& name);
 119
 120     // Loads menubar from resource. Returns NULL on failure.
 121     wxMenuBar *LoadMenuBar(const wxString& name);
 122
 123 #if wxUSE_TOOLBAR
 124     // Loads toolbar
 125     wxToolBar *LoadToolBar(wxWindow *parent, const wxString& name);
 126 #endif
 127
 128     // Loads dialog. dlg points to parent window (if any). Second form
 129     // is used to finish creation of already existing instance (main reason
 130     // for this is that you may want to use derived class with new event table)
 131     // Example (typical usage):
 132     //      MyDialog dlg;
 133     //      wxTheXmlResource->LoadDialog(&dlg, mainFrame, "my_dialog");
 134     //      dlg->ShowModal();
 135     wxDialog *LoadDialog(wxWindow *parent, const wxString& name);
 136     bool LoadDialog(wxDialog *dlg, wxWindow *parent, const wxString& name);
 137
 138     // Loads panel. panel points to parent window (if any). Second form
 139     // is used to finish creation of already existing instance.
 140     wxPanel *LoadPanel(wxWindow *parent, const wxString& name);
 141     bool LoadPanel(wxPanel *panel, wxWindow *parent, const wxString& name);
 142
 143     bool LoadFrame(wxFrame* frame, wxWindow *parent, const wxString& name);
 144
 145     // Loads bitmap or icon resource from file:
 146     wxBitmap LoadBitmap(const wxString& name);
 147     wxIcon LoadIcon(const wxString& name);
 148
 149     // Attaches unknown control into given panel/window/dialog:
 150     // (unknown controls are used in conjunction with <object class="unknown">)
 151     bool AttachUnknownControl(const wxString& name, wxWindow *control,
 152                               wxWindow *parent = NULL);
 153
 154     // Returns numeric ID that is equivalent to string id used in XML
 155     // resource. To be used in event tables
 156     // Macro XMLID is provided for convenience
 157     static int GetXMLID(const wxChar *str_id);
 158
 159     // Returns version info (a.b.c.d = d+ 256*c + 256^2*b + 256^3*a)
 160     long GetVersion() const { return m_version; }
 161
 162     // Compares resources version to argument. Returns -1 if resources version
 163     // is less than the argument, +1 if greater and 0 if they equal.
 164     int CompareVersion(int major, int minor, int release, int revision) const
 165         { return GetVersion() -
 166                  (major*256*256*256 + minor*256*256 + release*256 + revision); }
 167
 168 protected:
 169     // Scans resources list for unloaded files and loads them. Also reloads
 170     // files that have been modified since last loading.
 171     void UpdateResources();
 172
 173     // Finds resource (calls UpdateResources) and returns node containing it
 174     wxXmlNode *FindResource(const wxString& name, const wxString& classname);
 175
 176     // Creates resource from info in given node:
 177     wxObject *CreateResFromNode(wxXmlNode *node, wxObject *parent, wxObject *instance = NULL);
 178
 179     // Remove nodes with property "platform" that does not
 180     // match current platform
 181     void ProcessPlatformProperty(wxXmlNode *node);
 182
 183     bool GetUseLocale() { return m_useLocale; }
 184
 185 private:
 186     long m_version;
 187
 188     bool m_useLocale;
 189     wxList m_handlers;
 190     wxXmlResourceDataRecords m_data;
 191 #if wxUSE_FILESYSTEM
 192     wxFileSystem m_curFileSystem;
 193     wxFileSystem& GetCurFileSystem() { return m_curFileSystem; }
 194 #endif
 195
 196     friend class wxXmlResourceHandler;
 197 };
 198
 199
 200 // Global instance of resource class. For your convenience.
 201 extern WXXMLDLLEXPORT wxXmlResource *wxTheXmlResource;
 202
 203 // This macro translates string identifier (as used in XML resource,
 204 // e.g. <menuitem id="my_menu">...</menuitem>) to integer id that is needed by
 205 // wxWindows event tables.
 206 // Example:
 207 //    BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 208 //       EVT_MENU(XMLID("quit"), MyFrame::OnQuit)
 209 //       EVT_MENU(XMLID("about"), MyFrame::OnAbout)
 210 //       EVT_MENU(XMLID("new"), MyFrame::OnNew)
 211 //       EVT_MENU(XMLID("open"), MyFrame::OnOpen)
 212 //    END_EVENT_TABLE()
 213
 214 #define XMLID(str_id) \
 215     wxXmlResource::GetXMLID(wxT(str_id))
 216
 217
 218 // This macro returns pointer to particular control in dialog
 219 // created using XML resources. You can use it to set/get values from
 220 // controls.
 221 // Example:
 222 //    wxDialog dlg;
 223 //    wxTheXmlResource->LoadDialog(&dlg, mainFrame, "my_dialog");
 224 //    XMLCTRL(dlg, "my_textctrl", wxTextCtrl)->SetValue(wxT("default value"));
 225
 226 #ifdef __WXDEBUG__
 227 #define XMLCTRL(window, id, type) \
 228     (wxDynamicCast((window).FindWindow(XMLID(id)), type))
 229 #else
 230 #define XMLCTRL(window, id, type) \
 231     ((type*)((window).FindWindow(XMLID(id))))
 232 #endif
 233
 234
 235 class WXXMLDLLEXPORT wxXmlResourceHandler : public wxObject
 236 {
 237 public:
 238     wxXmlResourceHandler();
 239     virtual ~wxXmlResourceHandler() {}
 240
 241     // Creates object (menu, dialog, control, ...) from XML node.
 242     // Should check for validity.
 243     // parent is higher-level object (usually window, dialog or panel)
 244     // that is often neccessary to create resource
 245     // if instance != NULL it should not create new instance via 'new' but
 246     // rather use this one and call its Create method
 247     wxObject *CreateResource(wxXmlNode *node, wxObject *parent,
 248                              wxObject *instance);
 249
 250     // This one is called from CreateResource after variables
 251     // were filled
 252     virtual wxObject *DoCreateResource() = 0;
 253
 254     // Returns TRUE if it understands this node and can create
 255     // resource from it, FALSE otherwise.
 256     virtual bool CanHandle(wxXmlNode *node) = 0;
 257
 258     void SetParentResource(wxXmlResource *res) { m_resource = res; }
 259
 260
 261 protected:
 262
 263     wxXmlResource *m_resource;
 264     wxArrayString m_styleNames;
 265     wxArrayInt m_styleValues;
 266
 267     // Variables (filled by CreateResource)
 268     wxXmlNode *m_node;
 269     wxString m_class;
 270     wxObject *m_parent, *m_instance;
 271     wxWindow *m_parentAsWindow, *m_instanceAsWindow;
 272
 273     // --- Handy methods:
 274
 275     // Returns true if the node has property class equal to classname,
 276     // e.g. <object class="wxDialog">
 277     bool IsOfClass(wxXmlNode *node, const wxString& classname)
 278         { return node->GetPropVal(wxT("class"), wxEmptyString) == classname; }
 279
 280     // Gets node content from wxXML_ENTITY_NODE
 281     // (the problem is, <tag>content<tag> is represented as
 282     // wxXML_ENTITY_NODE name="tag", content=""
 283     //    |-- wxXML_TEXT_NODE or
 284     //        wxXML_CDATA_SECTION_NODE name="" content="content"
 285     wxString GetNodeContent(wxXmlNode *node);
 286
 287     // Check to see if a param exists
 288     bool HasParam(const wxString& param);
 289
 290     // Finds the node or returns NULL
 291     wxXmlNode *GetParamNode(const wxString& param);
 292     wxString GetParamValue(const wxString& param);
 293
 294     // Add style flag (e.g. wxMB_DOCKABLE) to list of flags
 295     // understood by this handler
 296     void AddStyle(const wxString& name, int value);
 297
 298     // Add styles common to all wxWindow-derived classes
 299     void AddWindowStyles();
 300
 301     // Gets style flags from text in form "flag | flag2| flag3 |..."
 302     // Only understads flags added with AddStyle
 303     int GetStyle(const wxString& param = wxT("style"), int defaults = 0);
 304
 305     // Gets text from param and does some convertions:
 306     // - replaces \n, \r, \t by respective chars (according to C syntax)
 307     // - replaces $ by & and $$ by $ (needed for $File => &File because of XML)
 308     // - calls wxGetTranslations (unless disabled in wxXmlResource)
 309     wxString GetText(const wxString& param);
 310
 311     // Return XMLID
 312     int GetID();
 313     wxString GetName();
 314
 315     // Get bool flag (1,t,yes,on,true are TRUE, everything else is FALSE)
 316     bool GetBool(const wxString& param, bool defaultv = FALSE);
 317
 318     // Get integer value from param
 319     long GetLong( const wxString& param, long defaultv = 0 );
 320
 321     // Get colour in HTML syntax (#RRGGBB)
 322     wxColour GetColour(const wxString& param);
 323
 324     // Get size/position (may be in dlg units):
 325     wxSize GetSize(const wxString& param = wxT("size"));
 326     wxPoint GetPosition(const wxString& param = wxT("pos"));
 327
 328     // Get dimension (may be in dlg units):
 329     wxCoord GetDimension(const wxString& param, wxCoord defaultv = 0);
 330
 331     // Get bitmap:
 332     wxBitmap GetBitmap(const wxString& param = wxT("bitmap"),
 333                        wxSize size = wxDefaultSize);
 334     wxIcon GetIcon(const wxString& param = wxT("icon"),
 335                    wxSize size = wxDefaultSize);
 336
 337     // Get font:
 338     wxFont GetFont(const wxString& param = wxT("font"));
 339
 340     // Sets common window options:
 341     void SetupWindow(wxWindow *wnd);
 342
 343     void CreateChildren(wxObject *parent, bool this_hnd_only = FALSE);
 344     void CreateChildrenPrivately(wxObject *parent, wxXmlNode *rootnode = NULL);
 345     wxObject *CreateResFromNode(wxXmlNode *node,
 346                                 wxObject *parent, wxObject *instance = NULL)
 347         { return m_resource->CreateResFromNode(node, parent, instance); }
 348
 349     // helper
 350     wxFileSystem& GetCurFileSystem() { return m_resource->GetCurFileSystem(); }
 351 };
 352
 353 #define ADD_STYLE(style) AddStyle(wxT(#style), style)
 354
 355
 356 void wxXmlInitResourceModule();
 357
 358 #endif // _WX_XMLRES_H_