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#ifndef __STYLEENGINE_HH__
#define __STYLEENGINE_HH__
class StyleEngine;
#include "dw/core.hh"
#include "doctree.hh"
#include "css.hh"
#include "cssparser.hh"
/**
* \brief This class provides the glue between HTML parser and CSS subsystem.
*
* It maintains a document tree and creates and caches style objects for use
* by the HTML parser.
* The HTML parser in turn informs StyleEngine about opened or closed
* HTML elements and their attributes via the startElement() / endElement()
* methods.
*/
class StyleEngine {
private:
class Node {
public:
dw::core::style::Style *style;
dw::core::style::Style *wordStyle;
const char *styleAttribute;
bool inheritBackgroundColor;
};
dw::core::Layout *layout;
lout::misc::SimpleVector <Node> *stack;
CssContext *cssContext;
Doctree *doctree;
int importDepth;
dw::core::style::Style *style0 (CssPropertyList *nonCssHints = NULL);
dw::core::style::Style *wordStyle0 (CssPropertyList *nonCssHints = NULL);
void apply (dw::core::style::StyleAttrs *attrs, CssPropertyList *props);
bool computeValue (int *dest, CssLength value,
dw::core::style::Font *font);
bool computeValue (int *dest, CssLength value,
dw::core::style::Font *font, int percentageBase);
bool computeLength (dw::core::style::Length *dest, CssLength value,
dw::core::style::Font *font);
void computeBorderWidth (int *dest, CssProperty *p,
dw::core::style::Font *font);
public:
StyleEngine (dw::core::Layout *layout);
~StyleEngine ();
void parse (DilloHtml *html, DilloUrl *url, const char *buf, int buflen,
CssOrigin origin);
void startElement (int tag);
void startElement (const char *tagname);
void setId (const char *id);
const char * getId () { return doctree->top ()->id; };
void setClass (const char *klass);
void setStyle (const char *style);
void endElement (int tag);
void setPseudoLink ();
void setPseudoVisited ();
void setNonCssHints (CssPropertyList *nonCssHints);
void inheritBackgroundColor (); /* \todo get rid of this somehow */
dw::core::style::Style *backgroundStyle ();
inline dw::core::style::Style *style () {
dw::core::style::Style *s = stack->getRef (stack->size () - 1)->style;
if (s)
return s;
else
return style0 ();
};
inline dw::core::style::Style *wordStyle () {
dw::core::style::Style *s = stack->getRef(stack->size()-1)->wordStyle;
if (s)
return s;
else
return wordStyle0 ();
};
};
#endif
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