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