implement selectorText setter

Author: rbri

src/main/java/com/gargoylesoftware/css/dom/AbstractCSSRuleImpl.java

@@ -44,9 +44,9 @@ public AbstractCSSRuleImpl(final CSSStyleSheetImpl parentStyleSheet, final Abstr
 
     /**
      * Sets the css text.
-     * @param text the new css text
+     * @param cssText the new css text
      */
-    public abstract void setCssText(String text);
+    public abstract void setCssText(String cssText);
 
     /**
      * Sets the parent style sheet.

src/main/java/com/gargoylesoftware/css/dom/CSSPageRuleImpl.java

@@ -108,7 +108,7 @@ public void setCssText(final String cssText) throws DOMException {
     }
 
     /**
-     * @return the selector text
+     * @return the current selector text
      */
     public String getSelectorText() {
         if (null == pseudoPage_) {
@@ -117,6 +117,39 @@ public String getSelectorText() {
         return pseudoPage_;
     }
 
+    /**
+     * Sets the selector text.
+     * @param selectorText the new selector text
+     */
+    public void setSelectorText(final String selectorText) throws DOMException {
+        try {
+            final CSSOMParser parser = new CSSOMParser();
+            final AbstractCSSRuleImpl r = parser.parseRule("@page " + selectorText + " {}");
+
+            // The rule must be a page rule
+            if (r instanceof CSSPageRuleImpl) {
+                pseudoPage_ = ((CSSPageRuleImpl) r).pseudoPage_;
+            }
+            else {
+                throw new DOMExceptionImpl(
+                    DOMException.INVALID_MODIFICATION_ERR,
+                    DOMExceptionImpl.EXPECTING_PAGE_RULE);
+            }
+        }
+        catch (final CSSException e) {
+            throw new DOMExceptionImpl(
+                DOMException.SYNTAX_ERR,
+                DOMExceptionImpl.SYNTAX_ERROR,
+                e.getMessage());
+        }
+        catch (final IOException e) {
+            throw new DOMExceptionImpl(
+                DOMException.SYNTAX_ERR,
+                DOMExceptionImpl.SYNTAX_ERROR,
+                e.getMessage());
+        }
+    }
+
     /**
      * @return the style
      */

src/test/java/com/gargoylesoftware/css/dom/CSSPageRuleImplTest.java

@@ -69,6 +69,23 @@ public void getSelectorText() throws Exception {
         assertEquals(":pseudo", value.getSelectorText());
     }
 
+    /**
+     * @throws Exception if any error occurs
+     */
+    @Test
+    public void setSelectorText() throws Exception {
+        final CSSPageRuleImpl value = parsePageRule("@page { color: blue; }");
+        assertEquals("", value.getSelectorText());
+
+        value.setSelectorText(":pseudo");
+        assertEquals("@page :pseudo { color: blue; }", value.getCssText());
+        assertEquals("@page :pseudo { color: blue; }", value.toString());
+
+        value.setSelectorText("");
+        assertEquals("@page { color: blue; }", value.getCssText());
+        assertEquals("@page { color: blue; }", value.toString());
+    }
+
     /**
      * @throws Exception if any error occurs
      */