AuroraMiddleware/wxWidgets
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added wxHtmlParser::{Push|Pop}TagHandler

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4226 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Václav Slavík 1999-10-27 23:25:45 +00:00
parent 29435d814d
commit a7a4d01bdb
2 changed files with 52 additions and 1 deletions
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20
include/wx/html/htmlpars.h
View File

@ -37,7 +37,7 @@ class WXDLLEXPORT wxHtmlParser : public wxObject
DECLARE_ABSTRACT_CLASS(wxHtmlParser)
public:
wxHtmlParser() : wxObject(), m_HandlersHash(wxKEY_STRING) {m_FS = NULL; m_Cache = NULL;}
wxHtmlParser() : wxObject(), m_HandlersHash(wxKEY_STRING) {m_FS = NULL; m_Cache = NULL; m_HandlersStack = NULL;}
virtual ~wxHtmlParser();
void SetFS(wxFileSystem *fs) {m_FS = fs;}
@ -70,6 +70,22 @@ class WXDLLEXPORT wxHtmlParser : public wxObject
virtual void AddTagHandler(wxHtmlTagHandler *handler);
// adds handler to the list & hash table of handlers.
void PushTagHandler(wxHtmlTagHandler *handler, wxString tags);
// Forces the handler to handle additional tags (not returned by GetSupportedTags).
// The handler should already be in use by this parser.
// Example: you want to parse following pseudo-html structure:
// <myitems>
// <it name="one" value="1">
// <it name="two" value="2">
// </myitems>
// <it> This last it has different meaning, we don't want it to be parsed by myitems handler!
// handler can handle only 'myitems' (e.g. it's GetSupportedTags returns "MYITEMS")
// you can call PushTagHandler(handler, "IT") when you find <myitems>
// and call PopTagHandler() when you find </myitems>
void PopTagHandler();
// Restores state before last call to PushTagHandler
wxString* GetSource() {return &m_Source;}
@ -117,6 +133,8 @@ class WXDLLEXPORT wxHtmlParser : public wxObject
// only one reference to each handler instance.
wxFileSystem *m_FS;
// class for opening files (file system)
wxList *m_HandlersStack;
// handlers stack used by PushTagHandler and PopTagHandler
};

33
src/html/htmlpars.cpp
View File

@ -148,8 +148,41 @@ void wxHtmlParser::AddTagHandler(wxHtmlTagHandler *handler)
void wxHtmlParser::PushTagHandler(wxHtmlTagHandler *handler, wxString tags)
{
wxStringTokenizer tokenizer(tags, ", ");
wxString key;
if (m_HandlersStack == NULL) {
m_HandlersStack = new wxList;
m_HandlersStack -> DeleteContents(TRUE);
}
m_HandlersStack -> Insert(new wxHashTable(m_HandlersHash));
while (tokenizer.HasMoreTokens()) {
key = tokenizer.NextToken();
m_HandlersHash.Delete(key);
m_HandlersHash.Put(key, handler);
}
}
void wxHtmlParser::PopTagHandler()
{
wxNode *first;
if (m_HandlersStack == NULL || (first = m_HandlersStack -> GetFirst()) == NULL) return;
m_HandlersHash = *((wxHashTable*) first -> GetData());
m_HandlersStack -> DeleteNode(first);
}
wxHtmlParser::~wxHtmlParser()
{
if (m_HandlersStack) delete m_HandlersStack;
m_HandlersHash.Clear();
m_HandlersList.DeleteContents(TRUE);
m_HandlersList.Clear();