Require at least Java 1.4 for building the javadocs.

Add todo tag to javadoc task.
Fixed @todo: tags.


git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@279661 13f79535-47bb-0310-9956-ffa450edef68

build.xml

@@ -687,6 +687,16 @@ list of possible build targets.
   <!-- Creates the API documentation                                       -->
   <!-- =================================================================== -->
   <target name="javadocs" depends="codegen" description="Generates javadocs">
+    <condition property="javadoc.version.ok">
+      <not>
+        <or>
+          <equals arg1="${ant.java.version}" arg2="1.1"/>
+          <equals arg1="${ant.java.version}" arg2="1.2"/>
+          <equals arg1="${ant.java.version}" arg2="1.3"/>
+        </or>
+      </not>
+    </condition>
+    <fail message="Building FOP javadocs requires at least Java 1.4" unless="javadoc.version.ok"/>
     <property name="javadoc.public"  value="false"/>
     <property name="javadoc.package" value="false"/>
     <property name="javadoc.private" value="false"/>
@@ -726,6 +736,7 @@ list of possible build targets.
         <pathelement path="${build.gensrc.dir}"/>
         <path refid="graphics-configuration-adapter"/>
       </sourcepath>
+      <tag name="todo" scope="all" description="To do:"/>
       <group title="Control and Startup">
         <package name="org.apache.fop.apps"/>
         <package name="org.apache.fop.configuration"/>

src/java/org/apache/fop/fo/flow/Footnote.java

@@ -75,10 +75,10 @@ public class Footnote extends FObj {
     /**
      * @see org.apache.fop.fo.FONode#validateChildNode(Locator, String, String)
      * XSL Content Model: (inline,footnote-body)
-     * @todo: implement additional constraint: An fo:footnote is not permitted
-     *      to have an fo:float, fo:footnote, or fo:marker as a descendant.
-     * @todo: implement additional constraint: An an fo:footnote is not 
-     *      permitted to have as a descendant an fo:block-container that 
+     * @todo implement additional constraint: A fo:footnote is not permitted
+     *      to have a fo:float, fo:footnote, or fo:marker as a descendant.
+     * @todo implement additional constraint: A fo:footnote is not 
+     *      permitted to have as a descendant a fo:block-container that 
      *      generates an absolutely positioned area.
      */
     protected void validateChildNode(Locator loc, String nsURI, String localName)