CCM NG: Load files from a theme from the master theme if the child theme does not have the file

git-svn-id: https://svn.libreccm.org/ccm/ccm_ng@5222 8810af33-2d31-482b-a856-94f89814c4df

ccm-core/src/main/java/org/libreccm/theming/Themes.java

@@ -172,9 +172,27 @@ public class Themes implements Serializable {
         }
 
         final ThemeProvider provider = forTheme.get();
-        return provider.getThemeFileAsStream(theme.getName(),
+        final Optional<InputStream> result = provider
-                                             theme.getVersion(),
+            .getThemeFileAsStream(theme.getName(), theme.getVersion(), path);
-                                             path);
+
+        if (result.isPresent()) {
+            return result;
+        } else if (theme.getManifest().getMasterTheme() == null
+                       || theme.getManifest().getMasterTheme().isEmpty()
+                       || theme.getManifest().getMasterTheme().matches("\\s*")) {
+
+            return Optional.empty();
+        } else {
+            final Optional<ThemeInfo> masterTheme = getTheme(
+                theme.getManifest().getMasterTheme(), 
+                theme.getVersion());
+            
+            if (masterTheme.isPresent()) {
+                return getFileFromTheme(masterTheme.get(), path);
+            } else {
+                return Optional.empty();
+            }
+        }
     }
 
 }

ccm-core/src/main/java/org/libreccm/theming/xslt/XsltThemeProcessor.java

@@ -49,13 +49,12 @@ import net.sf.saxon.om.Item;
 import net.sf.saxon.om.Sequence;
 import net.sf.saxon.om.StructuredQName;
 import net.sf.saxon.trans.XPathException;
-import net.sf.saxon.value.Int64Value;
-import net.sf.saxon.value.IntegerValue;
 import net.sf.saxon.value.SequenceType;
 import net.sf.saxon.value.StringValue;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.libreccm.theming.ProcessesThemes;
+import org.libreccm.theming.Themes;
 import org.libreccm.theming.manifest.ThemeTemplate;
 import org.libreccm.theming.utils.SettingsUtils;
 import org.libreccm.theming.utils.SystemInfoUtils;
@@ -107,6 +106,9 @@ public class XsltThemeProcessor implements ThemeProcessor {
     @Inject
     private TextUtils textUtils;
 
+    @Inject
+    private Themes themes;
+
     @Override
     public String process(final Map<String, Object> page,
                           final ThemeInfo theme,
@@ -170,10 +172,18 @@ public class XsltThemeProcessor implements ThemeProcessor {
             pathToTemplate = theme.getManifest().getDefaultTemplate();
         }
 
-        final InputStream xslFileInputStream = themeProvider
+//        final InputStream xslFileInputStream = themeProvider
-            .getThemeFileAsStream(theme.getName(),
+//            .getThemeFileAsStream(theme.getName(),
-                                  theme.getVersion(),
+//                                  theme.getVersion(),
-                                  pathToTemplate)
+//                                  pathToTemplate)
+//            .orElseThrow(() -> new UnexpectedErrorException(String
+//            .format("Failed to open XSL file \"%s\" from theme \"%s\" for "
+//                        + "reading.",
+//                    pathToTemplate,
+//                    theme.getName())));
+        final InputStream xslFileInputStream = themes
+            .getFileFromTheme(theme,
+                              pathToTemplate)
             .orElseThrow(() -> new UnexpectedErrorException(String
             .format("Failed to open XSL file \"%s\" from theme \"%s\" for "
                         + "reading.",