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package com.adobe.dp.epub.style;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Hashtable;
import java.util.Iterator;
import com.adobe.dp.css.CSSParser;
import com.adobe.dp.css.CSSStylesheet;
import com.adobe.dp.css.CSSValue;
import com.adobe.dp.css.CascadeResult;
import com.adobe.dp.css.FontFaceRule;
import com.adobe.dp.css.InlineRule;
import com.adobe.dp.css.Selector;
import com.adobe.dp.css.SelectorRule;
import com.adobe.dp.epub.opf.FontResource;
import com.adobe.dp.epub.opf.StyleResource;
public class Stylesheet {
StyleResource owner;
Hashtable classByProps = new Hashtable();
CSSStylesheet css;
public Stylesheet(StyleResource owner) {
this.owner = owner;
css = new CSSStylesheet();
}
public Stylesheet(StyleResource owner, InputStream in) throws IOException {
this.owner = owner;
CSSParser parser = new CSSParser();
this.css = parser.readStylesheet(in);
initExisting();
}
public Stylesheet(StyleResource owner, CSSStylesheet css) {
this.owner = owner;
this.css = css;
initExisting();
}
private void initExisting() {
// TODO: populate classByProps
}
public Selector getSimpleSelector(String elementName, String className) {
return css.getSimpleSelector(elementName, className);
}
public SelectorRule getRuleForSelector(Selector selector, boolean create) {
return css.getRuleForSelector(selector, create);
}
public FontFaceRule createFontFace(FontResource fontResource) {
FontFaceRule fontFace = new FontFaceRule();
css.add(fontFace);
fontFace.set("src", new ResourceURL(owner, fontResource.getResourceRef()));
return fontFace;
}
public String makeClass(String className, CascadeResult props) {
String cls = (String) classByProps.get(props);
if (cls != null)
return cls;
if (className == null)
className = "z";
props = props.cloneObject();
int count = 1;
cls = className;
Selector selector;
while (true) {
selector = css.getSimpleSelector(null, cls);
if (css.getRuleForSelector(selector, false) == null)
break;
cls = className + (count++);
}
classByProps.put(props, cls);
SelectorRule rule = css.getRuleForSelector(selector, true);
InlineRule p = props.getProperties().getPropertySet();
Iterator ps = p.properties();
while (ps.hasNext()) {
String pn = (String) ps.next();
CSSValue pv = p.get(pn);
rule.set(pn, pv);
}
return cls;
}
public CSSStylesheet getCSS() {
return css;
}
public void serialize(PrintWriter pout) {
css.serialize(pout);
}
public void addDirectStyles(InputStream in) throws IOException {
CSSParser parser = new CSSParser();
parser.readStylesheet(in, css);
initExisting();
}
}