/** If the LINK refers to a stylesheet document, this method loads and parses it. */
protected void processLink() {
this.styleSheet = null;
String rel = this.getAttribute(HtmlAttributeProperties.REL);
if (rel != null) {
String cleanRel = rel.trim().toLowerCase();
boolean isStyleSheet = cleanRel.equals("stylesheet");
boolean isAltStyleSheet = cleanRel.equals("alternate stylesheet");
boolean isAppendixStyleSheet = cleanRel.equals("appendix stylesheet");
if (isStyleSheet || isAltStyleSheet || isAppendixStyleSheet) {
UserAgentContext uacontext = this.getUserAgentContext();
if (uacontext.isExternalCSSEnabled()) {
String media = this.getMedia();
if (CSSUtilities.matchesMedia(media, uacontext)) {
HTMLDocumentImpl doc = (HTMLDocumentImpl) this.getOwnerDocument();
try {
CSSStyleSheet sheet = CSSUtilities.parse(this.getHref(), doc);
CSSStyleSheetImpl sheetImpl = null;
if (sheet != null) {
doc.addStyleSheet(sheet);
this.styleSheet = sheet;
if (sheet instanceof CSSStyleSheetImpl) {
sheetImpl = (CSSStyleSheetImpl) sheet;
if (isAltStyleSheet) {
sheetImpl.setDisabled(true);
} else {
sheetImpl.setDisabled(disabled);
}
URL baseURL = new URL(doc.getBaseURI());
URL scriptURL = Urls.createURL(baseURL, getHref());
if (scriptURL != null) sheetImpl.setHref(scriptURL.toString());
doc.addStyleSheet(sheetImpl);
} else {
if (isAltStyleSheet) {
sheet.setDisabled(true);
} else {
sheet.setDisabled(this.disabled);
}
doc.addStyleSheet(sheet);
}
}
} catch (MalformedURLException mfe) {
this.warn(
"Will not parse CSS. URI=["
+ this.getHref()
+ "] with BaseURI=["
+ doc.getBaseURI()
+ "] does not appear to be a valid URI.");
} catch (Throwable err) {
this.warn("Unable to parse CSS. URI=[" + this.getHref() + "].", err);
}
}
}
}
}
}
@Override
public void setDisabled(boolean disabled) {
this.disabled = disabled;
CSSStyleSheet sheet = this.styleSheet;
if (sheet != null) {
sheet.setDisabled(disabled);
}
}