Java StyleSheet类代码示例

import cz.vutbr.web.css.StyleSheet; //导入依赖的package包/类
/**
 * Creates a new DOM analyzer.
 * @param doc the document to be analyzed
 * @param baseUrl the base URL for loading the style sheets. If <code>detectBase</code>, this URL may be redefined by the <code>&lt;base&gt;</code> tag used in the
 * document header.
 * @param detectBase sets whether to try to accept the <code>&lt;base&gt;</code> tags in the document header.
 */
public DOMAnalyzer(org.w3c.dom.Document doc, URL baseUrl, boolean detectBase) 
{
    this.doc = doc;
    this.encoding = null;
    this.media = DEFAULT_MEDIA;
    styles = new Vector<StyleSheet>();
    this.baseUrl = baseUrl;
    if (detectBase)
    {
        String docbase = getDocumentBase();
        if (docbase != null)
        {
            try {
                this.baseUrl = new URL(baseUrl, docbase);
                System.err.println("DOMAnalyzer: Using specified document base " + this.baseUrl);
            } catch (MalformedURLException e) {
                System.err.println("DOMAnalyzer: error: malformed base URL " + docbase);
            }
        }
    }
    stylemap = null;
    istylemap = null;
}
 

import cz.vutbr.web.css.StyleSheet; //导入依赖的package包/类
private static CommonTokenStream feedLexer(CSSInputStream source,
		StyleSheet stylesheet) throws CSSException {

	// we have to unpack runtime exception
	// because of Java limitation
	// to change method contract with different type of exception
	try {
		CSSLexer lexer = new CSSLexer(source);
		lexer.init(stylesheet);
		return new CommonTokenStream(lexer);
	} catch (RuntimeException re) {
		if (re.getCause() instanceof CSSException) {
			throw (CSSException) re.getCause();
		}
		// this is some other exception
		else {
			log.error("LEXER THROWS:", re);
			throw re;
		}
	}
}
 

import cz.vutbr.web.css.StyleSheet; //导入依赖的package包/类
private static CSSTreeParser feedAST(CommonTokenStream source,
		CommonTree ast, Preparator preparator, StyleSheet stylesheet) {

	if (log.isTraceEnabled()) {
		log.trace("Feeding tree parser with AST:\n{}", TreeUtil
				.toStringTree(ast));
	}

	// Walk resulting tree; create tree-node stream first
	CommonTreeNodeStream nodes = new CommonTreeNodeStream(ast);

	// AST nodes have payloads that point into token stream
	nodes.setTokenStream(source);

	CSSTreeParser parser = new CSSTreeParser(nodes);

	return parser.init(stylesheet, preparator);
}
 

import cz.vutbr.web.css.StyleSheet; //导入依赖的package包/类
/**
 * Computes the priority order of the declaration based on its origin and importance
 * according to the CSS specification.
 * @return The priority order (1..5).
 * @see <a href="http://www.w3.org/TR/CSS21/cascade.html#cascading-order">http://www.w3.org/TR/CSS21/cascade.html#cascading-order</a>
 */
public int getOriginOrder()
{
	if (important)
	{
		if (origin == StyleSheet.Origin.AUTHOR)
			return 4;
		else if (origin == StyleSheet.Origin.AGENT)
			return 1;
		else
			return 5;
	}
	else
	{
		if (origin == StyleSheet.Origin.AUTHOR)
			return 3;
		else if (origin == StyleSheet.Origin.AGENT)
			return 1;
		else
			return 2;
	}
}
 

import cz.vutbr.web.css.StyleSheet; //导入依赖的package包/类
/**
 * Creates a new DOM analyzer.
 * @param doc the document to be analyzed
 * @param baseUrl the base URL for loading the style sheets. If <code>detectBase</code>, this URL may be redefined by the <code>&lt;base&gt;</code> tag used in the
 * document header.
 * @param detectBase sets whether to try to accept the <code>&lt;base&gt;</code> tags in the document header.
 */
public DOMAnalyzer(org.w3c.dom.Document doc, URL baseUrl, boolean detectBase) 
{
    this.doc = doc;
    this.encoding = null;
    this.media = new MediaSpec(DEFAULT_MEDIA);
    styles = new Vector<StyleSheet>();
    this.baseUrl = baseUrl;
    if (detectBase)
    {
        String docbase = getDocumentBase();
        if (docbase != null)
        {
            try {
                this.baseUrl = new URL(baseUrl, docbase);
                log.info("Using specified document base " + this.baseUrl);
            } catch (MalformedURLException e) {
                log.warn("Malformed base URL " + docbase);
            }
        }
    }
    stylemap = null;
    istylemap = null;
}
 

import cz.vutbr.web.css.StyleSheet; //导入依赖的package包/类
@Test
public void pseudoClassDirect() throws SAXException, IOException {  
    
    DOMSource ds = new DOMSource(getClass().getResourceAsStream("/simple/pseudo.html"));
    Document doc = ds.parse();
    ElementMap elements = new ElementMap(doc);
    
    MatchConditionOnElements cond = new MatchConditionOnElements("a", PseudoDeclaration.LINK);
    cond.addMatch(elements.getElementById("l2"), PseudoDeclaration.HOVER);
    cond.addMatch(elements.getElementById("l3"), PseudoDeclaration.VISITED);
    CSSFactory.registerDefaultMatchCondition(cond);
    
    StyleSheet style = CSSFactory.getUsedStyles(doc, null, createBaseFromFilename("data/simple/selectors.html"),"screen");
    DirectAnalyzer da = new DirectAnalyzer(style);

    NodeData l1 = getStyleById(elements, da, "l1");
    NodeData l2 = getStyleById(elements, da, "l2");
    NodeData l3 = getStyleById(elements, da, "l3");
    
    assertThat(l1.getValue(TermColor.class, "color"), is(tf.createColor(0,255,0)));
    assertThat(l2.getValue(TermColor.class, "color"), is(tf.createColor(0,255,255)));
    assertThat(l3.getValue(TermColor.class, "color"), is(tf.createColor(0,0,170)));
}
 

import cz.vutbr.web.css.StyleSheet; //导入依赖的package包/类
@Test 
public void testRGBFunction1() throws IOException, CSSException   {
	
	StyleSheet ss = CSSFactory.parseString(TEST_RGBFUNCTION1, null);
	assertEquals("One rule is set", 1, ss.size());
	
	RuleSet rule = (RuleSet) ss.get(0);				
	
	assertArrayEquals("Rule contains one selector BODY ", 
			SelectorsUtil.createSelectors("BODY"), 
			rule.getSelectors());
	
	assertEquals("Rule contains one declaration {color: #00aa85;}",
			DeclarationsUtil.appendDeclaration(null, "color", 
					tf.createColor(192, 64, 32)),
			rule.asList());
	
}
 

import cz.vutbr.web.css.StyleSheet; //导入依赖的package包/类
@Test 
public void testRGBFunction2() throws IOException, CSSException   {
	
	StyleSheet ss = CSSFactory.parseString(TEST_RGBFUNCTION2, null);
	assertEquals("One rule is set", 1, ss.size());
	
	RuleSet rule = (RuleSet) ss.get(0);				
	
	assertArrayEquals("Rule contains one selector BODY ", 
			SelectorsUtil.createSelectors("BODY"), 
			rule.getSelectors());
	
	assertEquals("Rule contains one declaration {color: rgb(50%,40%,30%);}",
			DeclarationsUtil.appendDeclaration(null, "color", 
					tf.createColor(127, 102, 76)),
			rule.asList());
}
 

import cz.vutbr.web.css.StyleSheet; //导入依赖的package包/类
@Test 
public void testHSLFunction1() throws IOException, CSSException   {
    
    StyleSheet ss = CSSFactory.parseString(TEST_HSLFUNCTION1, null);
    assertEquals("One rule is set", 1, ss.size());
    
    RuleSet rule = (RuleSet) ss.get(0);             
    
    assertArrayEquals("Rule contains one selector BODY ", 
            SelectorsUtil.createSelectors("BODY"), 
            rule.getSelectors());
    
    assertEquals("Rule contains one declaration with color",
            DeclarationsUtil.appendDeclaration(null, "color", 
                    tf.createColor(0, 255, 0)),
            rule.asList());
    
}
 

import cz.vutbr.web.css.StyleSheet; //导入依赖的package包/类
@Test 
public void testRGBAFunction1() throws IOException, CSSException   {
    
    StyleSheet ss = CSSFactory.parseString(TEST_RGBAFUNCTION1, null);
    assertEquals("One rule is set", 1, ss.size());
    
    RuleSet rule = (RuleSet) ss.get(0);             
    
    assertArrayEquals("Rule contains one selector BODY ", 
            SelectorsUtil.createSelectors("BODY"), 
            rule.getSelectors());
    
    assertEquals("Rule contains one declaration with color",
            DeclarationsUtil.appendDeclaration(null, "color", 
                    tf.createColor(255, 0, 0, 51)),
            rule.asList());
    
}
 

import cz.vutbr.web.css.StyleSheet; //导入依赖的package包/类
@Test 
public void testHSLAFunction1() throws IOException, CSSException   {
    
    StyleSheet ss = CSSFactory.parseString(TEST_HSLAFUNCTION1, null);
    assertEquals("One rule is set", 1, ss.size());
    
    RuleSet rule = (RuleSet) ss.get(0);             
    
    assertArrayEquals("Rule contains one selector BODY ", 
            SelectorsUtil.createSelectors("BODY"), 
            rule.getSelectors());
    
    assertEquals("Rule contains one declaration with color",
            DeclarationsUtil.appendDeclaration(null, "color", 
                    tf.createColor(0, 0, 255, 102)),
            rule.asList());
    
}
 

import cz.vutbr.web.css.StyleSheet; //导入依赖的package包/类
@Test
public void testHashColor2() throws IOException, CSSException   {
	
	StyleSheet ss = CSSFactory.parseString(TEST_HASH_COLOR2, null);
	assertEquals("One rule is set", 1, ss.size());
	
	final RuleSet rule = (RuleSet) ss.get(0);				
	
	assertArrayEquals("Rule contains two selectors DIV, P", 
			SelectorsUtil.createSelectors("DIV", "P"), 
			rule.getSelectors());
	
	assertEquals("Rule contains one declaration {color: #CCC;}",
			DeclarationsUtil.appendDeclaration(null, "color", 
					tf.createColor(204,204,204)),
			rule.asList());
}
 

import cz.vutbr.web.css.StyleSheet; //导入依赖的package包/类
@Test
public void testInvalidPseudoSelector2() throws IOException, CSSException   {
	StyleSheet ss = CSSFactory.parseString(TEST_INVALID_PSEUDO_SELECTOR2, null);
	assertEquals("One rule is set", 1, ss.size());

	RuleSet rule = (RuleSet) ss.get(0);

	assertArrayEquals("Rule contains one selector p ",
			SelectorsUtil.createSelectors("p"),
			rule.getSelectors());

	assertEquals("Rule contains one declaration {background: green}",
			DeclarationsUtil.appendDeclaration(null, "background",
					tf.createColor(0, 128, 0)),
			rule.asList());
}
 

import cz.vutbr.web.css.StyleSheet; //导入依赖的package包/类
@Test
public void testAttributePresence() throws CSSException, IOException {

	StyleSheet ss = CSSFactory.parseString(TEST_ATTRIB_PRESENCE, null);
	assertEquals("One rule is set", 1, ss.size());

	List<CombinedSelector> cslist = SelectorsUtil.appendCS(null);
	SelectorsUtil.appendSimpleSelector(cslist, "*", null, rf
			.createAttribute(null, false, Selector.Operator.NO_OPERATOR,
					"href"));

	assertArrayEquals("Rule 1 contains one combined selector *[href]", cslist.toArray(),
			((RuleSet) ss.get(0)).getSelectors());

	List<Term<?>> terms = DeclarationsUtil.appendTerm(null, null, tf
			.createIdent("Verdana"));
	DeclarationsUtil.appendCommaTerm(terms, tf.createIdent("monospace"));

	assertEquals(
			"Rule contains one declaration { text-decoration: underline }",
			DeclarationsUtil.appendDeclaration(null, "text-decoration", tf
					.createIdent("underline")), ((RuleSet) ss.get(0))
					.asList());

}
 

import cz.vutbr.web.css.StyleSheet; //导入依赖的package包/类
private void checkDataCSS(StyleSheet ss) {
	Analyzer analyzer = new Analyzer(ss);

	StyleMap decl = analyzer.evaluateDOM(doc, "all", true);
	ElementMap elements = new ElementMap(doc);

	Element marginator = elements.getElementById("marginator");

	assertNotNull("Element marginator exists", marginator);

	NodeData data = decl.get(marginator);

	assertEquals(
			"<div id=\"marginator\"> contains margin with for same values",
			Margin.length, data.getProperty("margin-top"));
	assertEquals(
			"<div id=\"marginator\"> contains margin with for same values",
			Margin.length, data.getProperty("margin-bottom"));
	assertEquals("Margin of 100px", new Float(100.0f), data.getValue(
			TermLength.class, "margin-top").getValue());
	assertEquals("Margin of 100px", TermNumeric.Unit.px, data.getValue(
			TermLength.class, "margin-top").getUnit());
	assertEquals("for all for both values", data.getValue(TermLength.class,
			"margin-bottom"), data
			.getValue(TermLength.class, "margin-left"));
}