From: Karen Lease <klease@apache.org>
Date: Fri, 10 Nov 2000 21:52:02 +0000 (+0000)
Subject: Rewrite for new properties functions
X-Git-Tag: pre-columns~123
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=996c317210ece7beaf49ca4a236c2f0c84093a77;p=xmlgraphics-fop.git

Rewrite for new properties functions


git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@193763 13f79535-47bb-0310-9956-ffa450edef68
---

diff --git a/src/codegen/properties.xsl b/src/codegen/properties.xsl
index 214c9cb23..4b7b9f1c1 100644
--- a/src/codegen/properties.xsl
+++ b/src/codegen/properties.xsl
@@ -3,10 +3,66 @@
                 xmlns:lxslt="http://xml.apache.org/xslt"
                 xmlns:redirect="org.apache.xalan.xslt.extensions.Redirect"
                 extension-element-prefixes="redirect">
+
+<xsl:include href="./propinc.xsl"/>
+
 <xsl:output method="text" />
 
-<xsl:template match="property" priority="-1">
-<xsl:variable name="classname" select="class-name"/>
+<!-- Ignore properties which reference others. Only for mapping! -->
+<xsl:template match="property[@type='ref']"/>
+
+<!-- Only if more explicit rules not matched (ref) -->
+<xsl:template match="property">
+
+<!-- Only create a specific class for those properties not based on
+     template (generic) property definitions or which extends a
+     generic definition.
+ -->
+<xsl:if test='not(use-generic) or count(*)>2'>
+
+<xsl:variable name="eclassname">
+  <xsl:choose>
+    <xsl:when test="class-name">
+      <xsl:value-of select="class-name"/>
+    </xsl:when>
+    <xsl:otherwise>
+      <xsl:call-template name="makeClassName">
+        <xsl:with-param name="propstr" select="name"/>
+      </xsl:call-template>
+    </xsl:otherwise>
+  </xsl:choose>
+</xsl:variable>
+
+<xsl:variable name="classname">
+     <xsl:value-of select="$eclassname"/><xsl:if test="not(@type='generic')">Maker</xsl:if>
+</xsl:variable>
+
+<!-- The class of the Property object to be created -->
+<xsl:variable name="propclass">
+  <xsl:call-template name="propclass"/>
+</xsl:variable>
+
+<!-- The superclass for this PropertyMaker -->
+<xsl:variable name="superclass">
+  <xsl:choose>
+  <xsl:when test="use-generic[@ispropclass='true']">
+    <xsl:value-of select="use-generic"/><xsl:text>.Maker</xsl:text>
+  </xsl:when>
+  <xsl:when test="use-generic">
+    <xsl:value-of select="use-generic"/>
+  </xsl:when>
+  <xsl:otherwise>
+    <xsl:value-of select="datatype"/><xsl:text>Property.Maker</xsl:text>
+  </xsl:otherwise>
+  </xsl:choose>
+</xsl:variable>
+
+<!-- Is this property an Enum or derived from a generic Enum -->
+<xsl:variable name="enumconst">
+  <xsl:if test="enumeration/value and not(@type='generic')">
+  <xsl:text> implements </xsl:text><xsl:value-of select="$eclassname"/></xsl:if>
+</xsl:variable>
+
 <redirect:write select="concat('@org/apache/fop@/fo/properties/', $classname, '.java')">
 package org.apache.fop.fo.properties;
 
@@ -15,97 +71,217 @@ import org.apache.fop.fo.*;
 import org.apache.fop.apps.FOPException;
 import org.apache.fop.messaging.MessageHandler;
 
-public class <xsl:value-of select="class-name"/> extends Property {
+public class <xsl:value-of select="$classname"/> extends  <xsl:value-of select="$superclass"/><xsl:value-of select="$enumconst"/> {
 
-  public static class Maker extends Property.Maker {
-    public boolean isInherited() { return <xsl:value-of select="inherited"/>; }
-
-    public Property make(PropertyList propertyList, String value) throws FOPException {
-<xsl:choose>
-<xsl:when test="make">
-      <xsl:variable name="datatype" select="datatype"/>
-      <xsl:value-of select="$datatype"/> v;
-<xsl:if test="make/to-double">
-      double d = toDouble(value);
-</xsl:if>
-<xsl:for-each select="make/if">
-      if (value.equals("<xsl:value-of select="@match"/>")) {
-        v = new <xsl:value-of select="$datatype"/>(<xsl:value-of select="."/>);
-      }
+<!-- If has enumerated values and is a generic class, create a nested
+  interface defining the enumeration constants -->
+<xsl:if test="enumeration/value and @type='generic'">
+  public interface Enums {
+<xsl:for-each select="enumeration/value">
+    int <xsl:value-of select="@const"/> = <xsl:number/>;
 </xsl:for-each>
-<xsl:for-each select="make/else-if-number">
-      else if (!Double.isNaN(d)) {
-        v = new <xsl:value-of select="$datatype"/>( <xsl:value-of select="."/>);
-      }
+  }
+</xsl:if>
+
+<!-- Handle enumeration values -->
+<xsl:for-each select="enumeration/value">
+  protected final static EnumProperty s_prop<xsl:value-of select="@const"/> = new EnumProperty(<xsl:if test="../../@type='generic'">Enums.</xsl:if><xsl:value-of select="@const"/>);
 </xsl:for-each>
-      else {
-        v = new <xsl:value-of select="datatype"/>(<xsl:value-of select="make/else"/>);
-      }
-      return new <xsl:value-of select="class-name"/>(propertyList, v);
-</xsl:when>
-<xsl:otherwise>
-      return new <xsl:value-of select="class-name"/>(propertyList, new <xsl:value-of select="datatype"/>(value));
-</xsl:otherwise>
-</xsl:choose>
+
+
+<!-- Look for compound properties -->
+<xsl:if test="compound">
+    <xsl:for-each select="compound/subproperty">
+    final private static Property.Maker s_<xsl:value-of select="name"/>Maker =
+	new <xsl:value-of select="datatype"/>Property.Maker(
+	     "<xsl:value-of select='../../name'/>.<xsl:value-of select='name'/>");
+    </xsl:for-each>
+</xsl:if>
+
+    static public Property.Maker maker(String propName) {
+	return new <xsl:value-of select="$classname"/>(propName);
     }
 
-    public Property make(PropertyList propertyList) throws FOPException {
-      return make(propertyList, "<xsl:value-of select="default"/>");
+    protected <xsl:value-of select="$classname"/>(String name) {
+	super(name);
     }
-  }
 
-  public static Property.Maker maker() {
-    return new <xsl:value-of select="class-name"/>.Maker();
-  }
+<xsl:if test="compound">
+    protected Property.Maker getSubpropMaker(String subprop) {
+    <xsl:for-each select="compound/subproperty">
+	if (subprop.equals("<xsl:value-of select='name'/>"))
+	  return s_<xsl:value-of select="name"/>Maker;
+    </xsl:for-each>
+	return super.getSubpropMaker(subprop);
+    }
 
-  private <xsl:value-of select="datatype"/> value;
+    protected Property setSubprop(Property baseProp, String subpropName,
+	Property subProp) {
+      <xsl:value-of select="datatype"/> val = 
+	((<xsl:value-of select="$propclass"/>)baseProp).get<xsl:value-of select="datatype"/>();
+    <xsl:for-each select="compound/subproperty">
+      <xsl:variable name="capname">
+	<xsl:call-template name="capfirst">
+          <xsl:with-param name="str" select="name"/>
+        </xsl:call-template>
+      </xsl:variable>
+	if (subpropName.equals("<xsl:value-of select='name'/>"))
+	  val.set<xsl:value-of select='$capname'/>(subProp.get<xsl:value-of select='datatype'/>());
+	else
+    </xsl:for-each>
+	  return super.setSubprop(baseProp, subpropName, subProp);
+	return baseProp;
+    }
 
-  public <xsl:value-of select="class-name"/>(PropertyList propertyList, <xsl:value-of select="datatype"/> explicitValue) {
-    this.propertyList = propertyList;
-    this.value = explicitValue;
-  }
+    public Property getSubpropValue(Property baseProp, String subpropName) {
+      <xsl:value-of select="datatype"/> val = 
+	((<xsl:value-of select="$propclass"/>)baseProp).get<xsl:value-of select="datatype"/>();
+    <xsl:for-each select="compound/subproperty">
+      <xsl:variable name="capname">
+	<xsl:call-template name="capfirst">
+          <xsl:with-param name="str" select="name"/>
+        </xsl:call-template>
+      </xsl:variable>
+	if (subpropName.equals("<xsl:value-of select='name'/>"))
+	  return new <xsl:value-of select='datatype'/>Property(
+	val.get<xsl:value-of select='$capname'/>());
+    </xsl:for-each>
+	 return super.getSubpropValue(baseProp, subpropName);
+    }
+</xsl:if>
 
-  public <xsl:value-of select="datatype"/> get<xsl:value-of select="datatype"/>() {
-    return this.value;
-  }
+<xsl:if test='not(default/@contextdep = "true")'>
+    private Property m_defaultProp=null;
+</xsl:if>
 
-}
-</redirect:write>
-</xsl:template>
+<xsl:if test="inherited">
+   public boolean isInherited() { return <xsl:value-of select="inherited"/>; }
+</xsl:if>
 
-<xsl:template match="property[datatype/enumeration]">
-<xsl:variable name="classname" select="class-name"/>
-<redirect:write select="concat('@org/apache/fop@/fo/properties/', $classname, '.java')">
-package org.apache.fop.fo.properties;
+<!-- the default implementation returns false -->
+<xsl:if test='inherited/@type="specified"'>
+   public boolean inheritsSpecified() {
+	 return true;
+   }
+</xsl:if>
 
-import org.apache.fop.datatypes.*;
-import org.apache.fop.fo.*;
-import org.apache.fop.apps.FOPException;
-import org.apache.fop.messaging.MessageHandler;
+<!-- Content of element is code to calculate the base length -->
+<xsl:if test="percent-ok">
+    static class PropLengthBase extends LengthBase {
+	private FObj fo;
+	private PropertyList propertyList ;
+
+	public PropLengthBase(FObj fo, PropertyList plist) {
+	  this.fo = fo;
+	// get from FO????
+	  this.propertyList = plist;
+	  //this.propertyList = fo.getProperties();
+        }
 
-public class <xsl:value-of select="class-name"/> extends Property {
-<xsl:for-each select="datatype/enumeration/value">
-  public final static int <xsl:value-of select="@const"/> = <xsl:number/>;</xsl:for-each>
+ 	public int getBaseLength() {
+<xsl:choose>
+  <xsl:when test="percent-ok/@base='FONTSIZE'">
+	return propertyList.get("font-size").getLength().mvalue();
+  </xsl:when>
+  <xsl:when test="percent-ok/@base='INH-FONTSIZE'">
+	return propertyList.getInherited("font-size").getLength().mvalue();
+  </xsl:when>
+  <xsl:when test="percent-ok/@base='CONTAINING-BOX'">
+	<!-- should probably distinguish width and height... -->
+	return fo.getContainingWidth();
+  </xsl:when>
+  <xsl:otherwise>
+	return <xsl:value-of select="percent-ok"/>;
+  </xsl:otherwise>
+</xsl:choose>
+        }
+    }
+
+    /** Return instance of internal class to calculate base Length
+     * for percent specifications.
+     */
+    public PercentBase getPercentBase(final FObj fo,
+	final PropertyList propertyList) {
+	return new PropLengthBase(fo, propertyList);
+    }
+</xsl:if>
+
+<!-- Look for "auto" length keyword -->
+<xsl:if test="auto-ok">
+    protected boolean isAutoLengthAllowed() {
+      return true;
+    }
+</xsl:if>
+
+
+<!-- Handle enumerated values -->
+<xsl:if test="enumeration/value">
+    protected Property findConstant(String value) {
+    <xsl:for-each select="enumeration/value">
+      if (value.equals("<xsl:value-of select="."/>")) { return s_prop<xsl:value-of select="@const"/>; }
+    </xsl:for-each>
+	return super.findConstant(value);
+    }
+</xsl:if>
 
-  public static class Maker extends Property.Maker {
-    public boolean isInherited() { return <xsl:value-of select="inherited"/>; }
+<!-- Look for keyword equivalents. Value is the new expression  -->
+<xsl:if test="keyword-equiv">
+    protected String checkValueKeywords(String value) {
+  <xsl:for-each select="keyword-equiv">
+      if (value.equals("<xsl:value-of select="@match"/>")) {
+	return new String("<xsl:value-of select="."/>");
+      }
+  </xsl:for-each>
+      return super.checkValueKeywords(value);
+    }
+</xsl:if>
 
-    public Property make(PropertyList propertyList, String value) throws FOPException {
-      int v;
-      <xsl:for-each select="datatype/enumeration/value">
-      if (value.equals("<xsl:value-of select="."/>")) { v = <xsl:value-of select="@const"/>; }
-      else</xsl:for-each>
+<!-- Generate code to convert from other datatypes to property datatype -->
+<xsl:if test='datatype-conversion'>
+    // See if other value types are acceptable
+    protected Property convertPropertyDatatype(Property p,
+	PropertyList propertyList, FObj fo) {
+      <xsl:for-each select="datatype-conversion">
       {
-        MessageHandler.errorln("WARNING: Unknown value for <xsl:value-of select="name"/>: " + value);
-        return make(propertyList, "<xsl:value-of select="default"/>");
+        <xsl:variable name="dtc">
+          <xsl:choose>
+	    <xsl:when test="@vartype">
+	       <xsl:value-of select="@vartype"/>
+	    </xsl:when><xsl:otherwise>
+	      <xsl:value-of select="@type"/>
+	    </xsl:otherwise>
+	  </xsl:choose>
+	</xsl:variable>
+	<xsl:value-of select="$dtc"/><xsl:text> </xsl:text> <xsl:value-of select="@varname"/> = 
+		p.get<xsl:value-of select="@type"/>();
+	if (<xsl:value-of select="@varname"/> != null) {
+	    return new <xsl:value-of select="$propclass"/>(
+		    <xsl:value-of select='.'/>);
+        }
       }
-      return new <xsl:value-of select="class-name"/>(propertyList, v);
+      </xsl:for-each>
+      return super.convertPropertyDatatype(p, propertyList, fo);
     }
+</xsl:if>
 
-    public Property make(PropertyList propertyList) throws FOPException {
-      return make(propertyList, "<xsl:value-of select="default"/>");
+<xsl:if test="default">
+    public Property make(PropertyList propertyList, boolean bForceNew) throws FOPException {
+      <xsl:choose><xsl:when test='default/@contextdep="true"'>
+        return make(propertyList, "<xsl:value-of select="default"/>", null);
+	</xsl:when><xsl:otherwise>
+	if (bForceNew) {
+	    // Make a new property instead of using the static default
+            return make(propertyList, "<xsl:value-of select="default"/>", null);
+        }
+        if (m_defaultProp == null)
+            m_defaultProp=make(propertyList, "<xsl:value-of select="default"/>", null);
+        return m_defaultProp;
+	</xsl:otherwise></xsl:choose>
     }
-    <xsl:if test="derive">
+</xsl:if>
+
+<!-- Currently only works for Enum values -->
+<xsl:if test="derive">
     public Property compute(PropertyList propertyList) {
       Property computedProperty = null;
       Property correspondingProperty = propertyList.get("<xsl:value-of select="derive/@from"/>");
@@ -113,33 +289,18 @@ public class <xsl:value-of select="class-name"/> extends Property {
         int correspondingValue = correspondingProperty.getEnum();
         <xsl:for-each select="derive/if">
         if (correspondingValue == <xsl:value-of select="@match"/>)
-          computedProperty = new <xsl:value-of select="$classname"/>(propertyList, <xsl:value-of select="."/>);
+          computedProperty = new EnumProperty(<xsl:value-of select="."/>);
         else</xsl:for-each>
         ;
       }
       return computedProperty;
     }
-    </xsl:if>
-  }
-
-  public static Property.Maker maker() {
-    return new <xsl:value-of select="class-name"/>.Maker();
-  }
-
-  private int value;
-
-  public <xsl:value-of select="class-name"/>(PropertyList propertyList, int explicitValue) {
-    this.propertyList = propertyList;
-    this.value = explicitValue;
-  }
-
-  public int getEnum() {
-    return this.value;
-  }
-
+</xsl:if>
 }
 </redirect:write>
+</xsl:if> <!-- need to create a class -->
 </xsl:template>
+
 </xsl:stylesheet>