/** Rewrite "/css/jeeeyul-custom.css" with user preference. */
public void rewrite() {
try {
CSSEngine cssEngine = WidgetElement.getEngine(display);
ExtendedDocumentCSS documentCSS = (ExtendedDocumentCSS) cssEngine.getDocumentCSS();
StyleSheet customThemeSheet = findCustomThemeSheet(documentCSS);
CustomThemeGenerator generator =
new CustomThemeGenerator(JThemesCore.getDefault().getPreferenceStore());
String newCSSContent = generator.generate().toString();
StyleSheet newSheet = cssEngine.parseStyleSheet(new StringReader(newCSSContent));
StyleSheetList oldSheetList = documentCSS.getStyleSheets();
List<StyleSheet> newSheetList = new ArrayList<StyleSheet>();
for (int i = 0; i < oldSheetList.getLength(); i++) {
StyleSheet oldSheet = oldSheetList.item(i);
if (oldSheet != customThemeSheet) {
if (!newSheetList.contains(oldSheet)) newSheetList.add(oldSheet);
} else {
if (!newSheetList.contains(newSheet)) newSheetList.add(newSheet);
}
}
documentCSS.removeAllStyleSheets();
for (StyleSheet each : newSheetList) {
documentCSS.addStyleSheet(each);
}
cssEngine.reapply();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* find and returns a {@link StyleSheet} which represent "jeeeyul-custom.css".
*
* @param documentCSS
* @return
* @since 1.2
*/
private StyleSheet findCustomThemeSheet(DocumentCSS documentCSS) {
StyleSheet customThemeSheet = null;
StyleSheetList styleSheets = documentCSS.getStyleSheets();
SearchCustomThemeSheet:
for (int i = 0; i < styleSheets.getLength(); i++) {
StyleSheet eachSheet = styleSheets.item(i);
if (eachSheet instanceof CSSStyleSheet) {
CSSRuleList cssRules = ((CSSStyleSheet) eachSheet).getCssRules();
for (int j = 0; j < cssRules.getLength(); j++) {
ExtendedCSSRule rule = (ExtendedCSSRule) cssRules.item(j);
SelectorList selectorList = rule.getSelectorList();
String selectorText = selectorList.item(0).toString();
if (CUSTOM_THEME_FIRST_SELECTOR.equals(selectorText)) {
customThemeSheet = eachSheet;
break SearchCustomThemeSheet;
}
}
}
}
return customThemeSheet;
}
