Implement disabled pseudo class selector. Minor refactoring.

DEVSIX-1973

Author: ars18wrw

styled-xml-parser/src/main/java/com/itextpdf/styledxmlparser/CommonAttributeConstants.java

@@ -43,14 +43,16 @@ This file is part of the iText (R) project.
 package com.itextpdf.styledxmlparser;
 
 public class CommonAttributeConstants {
-    /** The Constant ID. */
-    public static final String ID = "id";
     /** The Constant CLASS. */
     public static final String CLASS = "class";
+    /** The Constant DISABLED. */
+    public static final String DISABLED = "disabled";
+    /** The Constant ID. */
+    public static final String ID = "id";
     /** The Constant LANG. */
     public static final String LANG = "lang";
-    /** The Constant LANG. */
-    public static final String STYLESHEET = "stylesheet";
-    /** The Constant LANG. */
+    /** The Constant REL. */
     public static final String REL = "rel";
+    /** The Constant STYLESHEET. */
+    public static final String STYLESHEET = "stylesheet";
 }

styled-xml-parser/src/main/java/com/itextpdf/styledxmlparser/css/selector/item/CssPseudoClassDisabledSelectorItem.java

@@ -0,0 +1,27 @@
+package com.itextpdf.styledxmlparser.css.selector.item;
+
+import com.itextpdf.styledxmlparser.css.CommonCssConstants;
+import com.itextpdf.styledxmlparser.node.ICustomElementNode;
+import com.itextpdf.styledxmlparser.node.IDocumentNode;
+import com.itextpdf.styledxmlparser.node.IElementNode;
+import com.itextpdf.styledxmlparser.node.INode;
+
+class CssPseudoClassDisabledSelectorItem extends CssPseudoClassSelectorItem {
+    private static final CssPseudoClassDisabledSelectorItem instance = new CssPseudoClassDisabledSelectorItem();
+
+    public static CssPseudoClassDisabledSelectorItem getInstance() {
+        return instance;
+    }
+
+    private CssPseudoClassDisabledSelectorItem() {
+        super(CommonCssConstants.DISABLED);
+    }
+
+    @Override
+    public boolean matches(INode node) {
+        if (!(node instanceof IElementNode) || node instanceof ICustomElementNode || node instanceof IDocumentNode) {
+            return false;
+        }
+        return null != ((IElementNode) node).getAttribute(CommonCssConstants.DISABLED);
+    }
+}

styled-xml-parser/src/main/java/com/itextpdf/styledxmlparser/css/selector/item/CssPseudoClassSelectorItem.java

@@ -122,9 +122,10 @@ public static CssPseudoClassSelectorItem create(String pseudoClass, String argum
             case CommonCssConstants.TARGET:
             case CommonCssConstants.VISITED:
                 return new AlwaysNotApplySelectorItem(pseudoClass, arguments);
+            case CommonCssConstants.DISABLED:
+                return CssPseudoClassDisabledSelectorItem.getInstance();
             //Still unsupported, should be addressed in DEVSIX-1440
             //case CommonCssConstants.CHECKED:
-            //case CommonCssConstants.DISABLED:
             //case CommonCssConstants.ENABLED:
             //case CommonCssConstants.IN_RANGE:
             //case CommonCssConstants.INVALID:

styled-xml-parser/src/test/java/com/itextpdf/styledxmlparser/css/selector/item/CssPseudoClassDisabledSelectorItemTest.java

@@ -0,0 +1,43 @@
+package com.itextpdf.styledxmlparser.css.selector.item;
+
+import com.itextpdf.styledxmlparser.IXmlParser;
+import com.itextpdf.styledxmlparser.css.CssStyleSheet;
+import com.itextpdf.styledxmlparser.css.media.MediaDeviceDescription;
+import com.itextpdf.styledxmlparser.css.parse.CssStyleSheetParser;
+import com.itextpdf.styledxmlparser.jsoup.nodes.Element;
+import com.itextpdf.styledxmlparser.node.IDocumentNode;
+import com.itextpdf.styledxmlparser.node.IElementNode;
+import com.itextpdf.styledxmlparser.node.impl.jsoup.JsoupHtmlParser;
+import com.itextpdf.styledxmlparser.node.impl.jsoup.node.JsoupDocumentNode;
+import com.itextpdf.styledxmlparser.node.impl.jsoup.node.JsoupElementNode;
+import com.itextpdf.test.ExtendedITextTest;
+import com.itextpdf.test.annotations.type.UnitTest;
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+
+@Category(UnitTest.class)
+public class CssPseudoClassDisabledSelectorItemTest extends ExtendedITextTest {
+
+    private static final String sourceFolder = "./src/test/resources/com/itextpdf/styledxmlparser/css/selector/item/CssPseudoClassDisabledSelectorItemTest/";
+
+    @Test
+    public void testDisabledSelector() throws IOException {
+        String filename = sourceFolder + "disabled.html";
+
+        CssPseudoClassDisabledSelectorItem item = CssPseudoClassDisabledSelectorItem.getInstance();
+        IXmlParser htmlParser = new JsoupHtmlParser();
+        IDocumentNode documentNode = htmlParser.parse(new FileInputStream(filename), "UTF-8");
+        IElementNode disabledInput = new JsoupElementNode(((JsoupDocumentNode)documentNode).getDocument().getElementsByTag("input").first());
+        IElementNode enabledInput = new JsoupElementNode(((JsoupDocumentNode)documentNode).getDocument().getElementsByTag("input").get(1));
+
+        Assert.assertFalse(item.matches(documentNode));
+        Assert.assertTrue(item.matches(disabledInput));
+        Assert.assertFalse(item.matches(enabledInput));
+        Assert.assertFalse(item.matches(null));
+    }
+}

styled-xml-parser/src/test/resources/com/itextpdf/styledxmlparser/css/selector/item/CssPseudoClassDisabledSelectorItemTest/disabled.html

@@ -0,0 +1,2 @@
+<input type="text" disabled name="FirstD" value="Mickey">
+<input type="text" name="FirstE" value="Mickey">