render_cachecss.cpp

monqueror一个很具有参考价值的源玛

#include <assert.h>
#include "string.h"
#include "render_interface.h"
#include "../css/css_valueimpl.h"
#include "html_headimpl.h"

#include "render_cachecss.h"
#include "render_loadcss.h"

#define DEBUG_BY_XHTANG 0
using namespace DOM;
using namespace khtml;

MGCachedCSSStyleSheet::MGCachedCSSStyleSheet(DOM::DOMString &murl)
{
	m_sheet = 0;
	m_loadOk = 0;
	m_url = murl;
}				

MGCachedCSSStyleSheet::MGCachedCSSStyleSheet(DOM::DOMString &murl,unsigned char *url)
{
	m_sheet = 0;
	m_loadOk = 0;
	m_url = murl;
	LoadDataFromTempFile((char*)url);
#if 0
    // It's css we want.
    setAccept( QString::fromLatin1("text/css") );
    // load the file
    Cache::loader()->load(this, baseURL, false);
    loading = true;
#endif
}

MGCachedCSSStyleSheet::~MGCachedCSSStyleSheet()
{
}


void MGCachedCSSStyleSheet::checkNotify()
{
	if(!m_loadOk)return;
	
	DOM::CSSImportRuleImpl *c;
    for ( c = m_clients.first(); c != 0; c = m_clients.next() ){
        c->setStyleSheet( m_url, m_sheet );
	}
	DOM::HTMLLinkElementImpl *cLink;
	for ( cLink = m_clientsLink.first(); cLink != 0; cLink = m_clientsLink.next() ){
        cLink->setStyleSheet( m_url, m_sheet );
	}
}


void MGCachedCSSStyleSheet::error( int /*err*/, const char */*text*/ )
{
    m_loadOk = 1;//false;
    checkNotify();
}
bool MGCachedCSSStyleSheet::LoadDataFromTempFile( char TempName[])
{
	FILE* fp;
	int len;
	char buf[1025];
	fp = fopen(TempName, "r" );
	if(fp==NULL) return 0;
	m_sheet = (const char*)"";
	while(1){
		len = fread( buf, 1, 1024, fp );
		if(len<0)break;
		buf[len] = 0;
		m_sheet +=(const char*)buf;
		if(len<1024)break;
	}
	fclose( fp );
	m_loadOk = 1;

	checkNotify();
	
	return 1;
}
void MGCachedCSSStyleSheet::ref(DOM::CSSImportRuleImpl *c)
{
    // make sure we don't get it twice...
	m_clients.remove(c);
	m_clients.append(c);
	m_ref++; 
    if(m_loadOk) c->setStyleSheet( m_url, m_sheet );
}
void MGCachedCSSStyleSheet::deref(DOM::CSSImportRuleImpl *c)
{ 
	m_clients.remove(c);
	m_ref--; 
	if( m_ref <= 0 ) 
		delete this; 
}

		
void MGCachedCSSStyleSheet::ref(DOM::HTMLLinkElementImpl *c,bool b)
{
    // make sure we don't get it twice...
	m_clientsLink.remove(c);
	m_clientsLink.append(c);
	m_ref++; 
	if(m_loadOk) c->setStyleSheet( m_url, m_sheet );
}
void MGCachedCSSStyleSheet::deref(DOM::HTMLLinkElementImpl *c,bool b)
{ 
	m_clientsLink.remove(c);
	m_ref--; 
	if( m_ref <= 0 ) 
		delete this; 
}