src/common/webview.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        webview.cpp
   3 // Purpose:     Common interface and events for web view component
   4 // Author:      Marianne Gagnon
   5 // Id:          $Id$
   6 // Copyright:   (c) 2010 Marianne Gagnon
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_WEB
  14
  15 #if defined(__BORLANDC__)
  16     #pragma hdrstop
  17 #endif
  18
  19 #include "wx/webview.h"
  20
  21 #include "wx/osx/webview_webkit.h"
  22 #include "wx/gtk/webview_webkit.h"
  23 #include "wx/msw/webview_ie.h"
  24 #include "wx/filesys.h"
  25 #include "wx/tokenzr.h"
  26
  27 // DLL options compatibility check:
  28 #include "wx/app.h"
  29 WX_CHECK_BUILD_OPTIONS("wxWEB")
  30
  31 extern WXDLLIMPEXP_DATA_WEB(const char) wxWebViewNameStr[] = "wxWebView";
  32 extern WXDLLIMPEXP_DATA_WEB(const char) wxWebViewDefaultURLStr[] = "about:blank";
  33
  34 IMPLEMENT_DYNAMIC_CLASS(wxWebNavigationEvent, wxCommandEvent)
  35
  36 wxDEFINE_EVENT( wxEVT_COMMAND_WEB_VIEW_NAVIGATING, wxWebNavigationEvent );
  37 wxDEFINE_EVENT( wxEVT_COMMAND_WEB_VIEW_NAVIGATED, wxWebNavigationEvent );
  38 wxDEFINE_EVENT( wxEVT_COMMAND_WEB_VIEW_LOADED, wxWebNavigationEvent );
  39 wxDEFINE_EVENT( wxEVT_COMMAND_WEB_VIEW_ERROR, wxWebNavigationEvent );
  40 wxDEFINE_EVENT( wxEVT_COMMAND_WEB_VIEW_NEWWINDOW, wxWebNavigationEvent );
  41
  42 //Taken from wx/filesys.cpp
  43 static wxString EscapeFileNameCharsInURL(const char *in)
  44 {
  45     wxString s;
  46
  47     for ( const unsigned char *p = (const unsigned char*)in; *p; ++p )
  48     {
  49         const unsigned char c = *p;
  50
  51         if ( c == '/' || c == '-' || c == '.' || c == '_' || c == '~' ||
  52              (c >= '0' && c <= '9') ||
  53              (c >= 'a' && c <= 'z') ||
  54              (c >= 'A' && c <= 'Z') )
  55         {
  56             s << c;
  57         }
  58         else
  59         {
  60             s << wxString::Format("%%%02x", c);
  61         }
  62     }
  63
  64     return s;
  65 }
  66
  67 wxWebFileProtocolHandler::wxWebFileProtocolHandler()
  68 {
  69     m_protocol = "test";
  70     m_fileSystem = new wxFileSystem();
  71 }
  72
  73 wxFSFile* wxWebFileProtocolHandler::GetFile(const wxString &uri)
  74 {
  75     size_t pos = uri.find('?');
  76     //There is no query string so we can load the file directly
  77     if(pos == wxString::npos)
  78     {
  79         size_t doubleslash = uri.find("//");
  80         //The path is incorrectly formed without // after the first protocol
  81         if(doubleslash == wxString::npos)
  82             return NULL;
  83
  84         wxString fspath = "file:" +
  85                           EscapeFileNameCharsInURL(uri.substr(doubleslash + 2));
  86         return m_fileSystem->OpenFile(fspath);
  87     }
  88     //Otherwise we have a query string of some kind that we need to extract
  89     else{
  90         //First we extract the query string, this should have two parameters,
  91         //protocol=type and path=path
  92         wxString query = uri.substr(pos + 1), protocol, path;
  93         //We also trim the query off the end as we handle it alone
  94         wxString lefturi = uri.substr(0, pos);
  95         wxStringTokenizer tokenizer(query, ";");
  96         while(tokenizer.HasMoreTokens() && (protocol == "" || path == ""))
  97         {
  98             wxString token = tokenizer.GetNextToken();
  99             if(token.substr(0, 9) == "protocol=")
 100             {
 101                 protocol = token.substr(9);
 102             }
 103             else if(token.substr(0, 5) == "path=")
 104             {
 105                 path = token.substr(5);
 106             }
 107         }
 108         if(protocol == "" || path == "")
 109             return NULL;
 110
 111         //We now have the path and the protocol and so can format a correct uri
 112         //to pass to wxFileSystem to get a wxFSFile
 113         size_t doubleslash = uri.find("//");
 114         //The path is incorrectly formed without // after the first protocol
 115         if(doubleslash == wxString::npos)
 116             return NULL;
 117
 118         wxString fspath = "file:" +
 119                           EscapeFileNameCharsInURL(lefturi.substr(doubleslash + 2))
 120                           + "#" + protocol +":" + path;
 121         return m_fileSystem->OpenFile(fspath);
 122     }
 123 }
 124
 125 wxString wxWebFileProtocolHandler::CombineURIs(const wxString &baseuri,
 126                                                const wxString &newuri)
 127 {
 128     //Still need to be implemented correctly
 129     return newuri;
 130 }
 131
 132 // static
 133 wxWebView* wxWebView::New(wxWebViewBackend backend)
 134 {
 135     switch (backend)
 136     {
 137         #if defined(wxUSE_WEBVIEW_WEBKIT) && \
 138            (defined(__WXGTK__) || defined(__WXOSX__))
 139         case wxWEB_VIEW_BACKEND_WEBKIT:
 140             return new wxWebViewWebKit();
 141         #endif
 142
 143         #if wxUSE_WEBVIEW_IE
 144         case wxWEB_VIEW_BACKEND_IE:
 145             return new wxWebViewIE();
 146         #endif
 147
 148         case wxWEB_VIEW_BACKEND_DEFAULT:
 149
 150             #if defined(wxUSE_WEBVIEW_WEBKIT) && \
 151                (defined(__WXGTK__) || defined(__WXOSX__))
 152             return new wxWebViewWebKit();
 153             #endif
 154
 155             #if wxUSE_WEBVIEW_IE
 156             return new wxWebViewIE();
 157             #endif
 158
 159         // fall-through intended
 160         default:
 161             return NULL;
 162     }
 163 }
 164
 165 // static
 166 wxWebView* wxWebView::New(wxWindow* parent,
 167        wxWindowID id,
 168        const wxString& url,
 169        const wxPoint& pos,
 170        const wxSize& size,
 171        wxWebViewBackend backend,
 172        long style,
 173        const wxString& name)
 174 {
 175     switch (backend)
 176     {
 177         #if defined(wxUSE_WEBVIEW_WEBKIT) && \
 178            (defined(__WXGTK__) || defined(__WXOSX__))
 179         case wxWEB_VIEW_BACKEND_WEBKIT:
 180             return new wxWebViewWebKit(parent, id, url, pos, size, style, name);
 181         #endif
 182
 183         #if wxUSE_WEBVIEW_IE
 184         case wxWEB_VIEW_BACKEND_IE:
 185             return new wxWebViewIE(parent, id, url, pos, size, style, name);
 186         #endif
 187
 188         case wxWEB_VIEW_BACKEND_DEFAULT:
 189
 190             #if defined(wxUSE_WEBVIEW_WEBKIT) && \
 191                (defined(__WXGTK__) || defined(__WXOSX__))
 192             return new wxWebViewWebKit(parent, id, url, pos, size, style, name);
 193             #endif
 194
 195             #if wxUSE_WEBVIEW_IE
 196             return new wxWebViewIE(parent, id, url, pos, size, style, name);
 197             #endif
 198
 199         // fall-through intended
 200         default:
 201             return NULL;
 202     }
 203 }
 204
 205 #endif // wxUSE_WEB