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hrmsEjb/net/sf/jasperreports/engine/util/JRTextMeasurerUtil.java

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+package net.sf.jasperreports.engine.util;
+
+import net.sf.jasperreports.engine.JRCommonText;
+import net.sf.jasperreports.engine.JRException;
+import net.sf.jasperreports.engine.JRPropertiesHolder;
+import net.sf.jasperreports.engine.JRRuntimeException;
+import net.sf.jasperreports.engine.fill.JRTextMeasurer;
+import net.sf.jasperreports.engine.fill.JRTextMeasurerFactory;
+
+public class JRTextMeasurerUtil {
+  public static final String PROPERTY_TEXT_MEASURER_FACTORY = "net.sf.jasperreports.text.measurer.factory";
+  
+  private static final JRSingletonCache cache = new JRSingletonCache(JRTextMeasurerFactory.class);
+  
+  public static JRTextMeasurer createTextMeasurer(JRCommonText text) {
+    JRPropertiesHolder propertiesHolder = (text instanceof JRPropertiesHolder) ? (JRPropertiesHolder)text : null;
+    return createTextMeasurer(text, propertiesHolder);
+  }
+  
+  public static JRTextMeasurer createTextMeasurer(JRCommonText text, JRPropertiesHolder propertiesHolder) {
+    JRTextMeasurerFactory factory = getTextMeasurerFactory(propertiesHolder);
+    return factory.createMeasurer(text);
+  }
+  
+  public static JRTextMeasurerFactory getTextMeasurerFactory(JRPropertiesHolder propertiesHolder) {
+    String factoryClass = getTextMeasurerFactoryClass(propertiesHolder);
+    try {
+      return (JRTextMeasurerFactory)cache.getCachedInstance(factoryClass);
+    } catch (JRException e) {
+      throw new JRRuntimeException(e);
+    } 
+  }
+  
+  protected static String getTextMeasurerFactoryClass(JRPropertiesHolder propertiesHolder) {
+    String factory = JRProperties.getProperty(propertiesHolder, "net.sf.jasperreports.text.measurer.factory");
+    String factoryClassProperty = "net.sf.jasperreports.text.measurer.factory." + factory;
+    String factoryClass = JRProperties.getProperty(propertiesHolder, factoryClassProperty);
+    if (factoryClass == null)
+      factoryClass = factory; 
+    return factoryClass;
+  }
+}