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/*
* 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.table;
import org.apache.fop.apps.FOPException;
import org.apache.fop.datatypes.Numeric;
import org.apache.fop.datatypes.ValidationPercentBaseContext;
import org.apache.fop.fo.Constants;
import org.apache.fop.fo.FONode;
import org.apache.fop.fo.FObj;
import org.apache.fop.fo.PropertyList;
import org.apache.fop.fo.expr.PropertyException;
import org.apache.fop.fo.properties.CommonBorderPaddingBackground;
import org.apache.fop.fo.properties.NumberProperty;
import org.apache.fop.fo.properties.Property;
import org.apache.fop.layoutmgr.table.CollapsingBorderModel;
/**
* Common base class for table-related FOs
*/
public abstract class TableFObj extends FObj {
private Numeric borderAfterPrecedence;
private Numeric borderBeforePrecedence;
private Numeric borderEndPrecedence;
private Numeric borderStartPrecedence;
BorderSpecification[] resolvedBorders = new BorderSpecification[4]; // TODO
CollapsingBorderModel collapsingBorderModel;
/**
* Main constructor
*
* @param parent the parent node
*/
public TableFObj(FONode parent) {
super(parent);
}
/**
* {@inheritDoc}
*/
public void bind(PropertyList pList) throws FOPException {
super.bind(pList);
borderAfterPrecedence = pList.get(PR_BORDER_AFTER_PRECEDENCE).getNumeric();
borderBeforePrecedence = pList.get(PR_BORDER_BEFORE_PRECEDENCE).getNumeric();
borderEndPrecedence = pList.get(PR_BORDER_END_PRECEDENCE).getNumeric();
borderStartPrecedence = pList.get(PR_BORDER_START_PRECEDENCE).getNumeric();
if (getNameId() != FO_TABLE //Separate check for fo:table in Table.java
&& getNameId() != FO_TABLE_CELL
&& getCommonBorderPaddingBackground().hasPadding(
ValidationPercentBaseContext.getPseudoContext())) {
attributeWarning(
"padding-* properties are not applicable to " + getName()
+ ", but a non-zero value for padding was found.");
}
}
/**
*
* @param side the side for which to return the border precedence
* @return the "border-precedence" value for the given side
*/
public Numeric getBorderPrecedence(int side) {
switch (side) {
case CommonBorderPaddingBackground.BEFORE:
return borderBeforePrecedence;
case CommonBorderPaddingBackground.AFTER:
return borderAfterPrecedence;
case CommonBorderPaddingBackground.START:
return borderStartPrecedence;
case CommonBorderPaddingBackground.END:
return borderEndPrecedence;
default:
return null;
}
}
/**
* Convenience method to returns a reference
* to the base Table instance
*
* @return the base table instance
*
*/
public Table getTable() {
// Will be overridden in Table; for any other Table-node, recursive call to
// parent.getTable()
return ((TableFObj) parent).getTable();
}
/**
* @return the Common Border, Padding, and Background Properties.
*/
public abstract CommonBorderPaddingBackground getCommonBorderPaddingBackground();
/**
* PropertyMaker subclass for the column-number property
*
*/
public static class ColumnNumberPropertyMaker extends NumberProperty.Maker {
/**
* Constructor
* @param propId the id of the property for which the maker should
* be created
*/
public ColumnNumberPropertyMaker(int propId) {
super(propId);
}
/** {@inheritDoc} */
public Property make(PropertyList propertyList)
throws PropertyException {
FObj fo = propertyList.getFObj();
return NumberProperty.getInstance(((ColumnNumberManagerHolder) fo.getParent())
.getColumnNumberManager().getCurrentColumnNumber());
}
/**
* Check the value of the column-number property.
* Return the parent's column index (initial value) in case
* of a negative or zero value
*
* @see org.apache.fop.fo.properties.PropertyMaker#make(PropertyList, String, FObj)
*/
public Property make(PropertyList propertyList, String value, FObj fo)
throws PropertyException {
Property p = super.make(propertyList, value, fo);
ColumnNumberManagerHolder parent
= (ColumnNumberManagerHolder) propertyList.getParentFObj();
ColumnNumberManager columnIndexManager = parent.getColumnNumberManager();
int columnIndex = p.getNumeric().getValue();
if (columnIndex <= 0) {
log.warn("Specified negative or zero value for "
+ "column-number on " + fo.getName() + ": "
+ columnIndex + " forced to "
+ columnIndexManager.getCurrentColumnNumber());
return NumberProperty.getInstance(columnIndexManager.getCurrentColumnNumber());
} else {
double tmpIndex = p.getNumeric().getNumericValue();
if (tmpIndex - columnIndex > 0.0) {
columnIndex = (int) Math.round(tmpIndex);
log.warn("Rounding specified column-number of "
+ tmpIndex + " to " + columnIndex);
p = NumberProperty.getInstance(columnIndex);
}
}
int colSpan = propertyList.get(Constants.PR_NUMBER_COLUMNS_SPANNED)
.getNumeric().getValue();
int i = -1;
while (++i < colSpan) {
if (columnIndexManager.isColumnNumberUsed(columnIndex + i)) {
/* if column-number is already in use by another
* cell/column => error!
*/
StringBuffer errorMessage = new StringBuffer();
errorMessage.append(fo.getName() + " overlaps in column ")
.append(columnIndex + i);
org.xml.sax.Locator loc = fo.getLocator();
if (loc != null && loc.getLineNumber() != -1) {
errorMessage.append(" (line #")
.append(loc.getLineNumber()).append(", column #")
.append(loc.getColumnNumber()).append(")");
}
throw new PropertyException(errorMessage.toString());
}
}
return p;
}
}
/** {@inheritDoc} */
public void startOfNode() throws FOPException {
super.startOfNode();
Table table = getTable();
if (!inMarker() && !table.isSeparateBorderModel()) {
collapsingBorderModel = CollapsingBorderModel.getBorderModelFor(table
.getBorderCollapse());
resolvedBorders = new BorderSpecification[4];
setCollapsedBorders();
}
}
/*
* TODO made public so that RetrieveMarker can access it.
*/
/** {@inheritDoc} */
public void endOfNode() throws FOPException {
super.endOfNode();
}
/**
* Prepares the borders of this element if the collapsing-border model is in use.
* Conflict resolution with parent elements is done where applicable.
*/
protected abstract void setCollapsedBorders();
/**
* Creates a BorderSpecification from the border set on the given side. If no border
* is set, a BorderSpecification with border-style none is created.
*
* @param side one of CommonBorderPaddingBackground.BEFORE|AFTER|START|END
*/
protected void createBorder(int side) {
resolvedBorders[side] = new BorderSpecification(getCommonBorderPaddingBackground()
.getBorderInfo(side), getNameId());
}
/**
* Creates a BorderSpecification from the border set on the given side, performing
* conflict resolution with the same border on the given object.
*
* @param side one of CommonBorderPaddingBackground.BEFORE|AFTER|START|END
* @param competitor a parent table element whose side coincides with the given side
* on this element
*/
protected void createBorder(int side, TableFObj competitor) {
createBorder(side);
resolvedBorders[side] = collapsingBorderModel.determineWinner(resolvedBorders[side],
competitor.resolvedBorders[side]);
}
}
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