| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.fop.fo.flow; |
| |
| import org.xml.sax.Locator; |
| |
| import org.apache.fop.apps.FOPException; |
| import org.apache.fop.fo.FONode; |
| import org.apache.fop.fo.FObjMixed; |
| import org.apache.fop.fo.PropertyList; |
| import org.apache.fop.fo.ValidationException; |
| import org.apache.fop.fo.properties.SpaceProperty; |
| |
| /** |
| * Class modelling the <a href="http://www.w3.org/TR/xsl/#fo_bidi-override"> |
| * <code>fo:bidi-override</code></a> object. |
| */ |
| public class BidiOverride extends FObjMixed { |
| |
| // used for FO validation |
| private boolean blockOrInlineItemFound = false; |
| private boolean canHaveBlockLevelChildren = true; |
| // The value of properties relevant for fo:bidi-override. |
| // private ToBeImplementedProperty prDirection; |
| // private ToBeImplementedProperty prLetterSpacing; |
| private SpaceProperty lineHeight; |
| // private ToBeImplementedProperty prScoreSpaces; |
| // private ToBeImplementedProperty prUnicodeBidi; |
| |
| // Unused but valid items, commented out for performance: |
| // private CommonAural commonAural; |
| // private CommonFont commonFont; |
| // private CommonRelativePosition commonRelativePosition; |
| // private Color prColor; |
| // private SpaceProperty prWordSpacing; |
| // End of property values |
| |
| /** |
| * Base constructor |
| * |
| * @param parent FONode that is the parent of this object |
| */ |
| public BidiOverride(FONode parent) { |
| super(parent); |
| |
| /* Check to see if this node can have block-level children. |
| * See validateChildNode() below. |
| */ |
| int lvlLeader = findAncestor(FO_LEADER); |
| int lvlInCntr = findAncestor(FO_INLINE_CONTAINER); |
| int lvlInline = findAncestor(FO_INLINE); |
| int lvlFootnote = findAncestor(FO_FOOTNOTE); |
| |
| if (lvlLeader > 0) { |
| if (lvlInCntr < 0 || (lvlInCntr > 0 && lvlInCntr > lvlLeader)) { |
| canHaveBlockLevelChildren = false; |
| } |
| } else if (lvlInline > 0 && lvlFootnote == (lvlInline + 1)) { |
| if (lvlInCntr < 0 || (lvlInCntr > 0 && lvlInCntr > lvlInline)) { |
| canHaveBlockLevelChildren = false; |
| } |
| } |
| |
| } |
| |
| /** {@inheritDoc} */ |
| public void bind(PropertyList pList) throws FOPException { |
| // prDirection = pList.get(PR_DIRECTION); |
| // prLetterSpacing = pList.get(PR_LETTER_SPACING); |
| lineHeight = pList.get(PR_LINE_HEIGHT).getSpace(); |
| // prScoreSpaces = pList.get(PR_SCORE_SPACES); |
| // prUnicodeBidi = pList.get(PR_UNICODE_BIDI); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * <br>XSL Content Model: marker* (#PCDATA|%inline;|%block;)* |
| * <br><i>Additionally: "An fo:bidi-override that is a descendant of an fo:leader |
| * or of the fo:inline child of an fo:footnote may not have block-level |
| * children, unless it has a nearer ancestor that is an |
| * fo:inline-container."</i> |
| */ |
| protected void validateChildNode(Locator loc, String nsURI, String localName) |
| throws ValidationException { |
| if (FO_URI.equals(nsURI)) { |
| if (localName.equals("marker")) { |
| if (blockOrInlineItemFound) { |
| nodesOutOfOrderError(loc, "fo:marker", |
| "(#PCDATA|%inline;|%block;)"); |
| } |
| } else if (!isBlockOrInlineItem(nsURI, localName)) { |
| invalidChildError(loc, nsURI, localName); |
| } else if (!canHaveBlockLevelChildren && isBlockItem(nsURI, localName)) { |
| invalidChildError(loc, getParent().getName(), nsURI, getName(), |
| "rule.bidiOverrideContent"); |
| } else { |
| blockOrInlineItemFound = true; |
| } |
| } |
| } |
| |
| /** @return the "line-height" property */ |
| public SpaceProperty getLineHeight() { |
| return lineHeight; |
| } |
| |
| /** {@inheritDoc} */ |
| public String getLocalName() { |
| return "bidi-override"; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @return {@link org.apache.fop.fo.Constants#FO_BIDI_OVERRIDE} |
| */ |
| public int getNameId() { |
| return FO_BIDI_OVERRIDE; |
| } |
| } |