New class CustomFunctionCompletion to support method completions with arguments.

Author: acardona

src/main/java/org/scijava/plugins/scripteditor/jython/CustomFunctionCompletion.java

@@ -0,0 +1,71 @@
+package org.scijava.plugins.scripteditor.jython;
+
+import org.fife.ui.autocomplete.CompletionProvider;
+import org.fife.ui.autocomplete.FunctionCompletion;
+
+public class CustomFunctionCompletion extends FunctionCompletion
+{
+	public CustomFunctionCompletion(
+			final CompletionProvider provider,
+			final String name,
+			final String returnType) {
+		super(provider, name, returnType);
+	}
+	
+	@Override
+	public String getName() {
+		return super.getName() + "()"; // for listing with fields and methods
+	}
+	
+	@Override
+	public String getDefinitionString() {
+		StringBuilder sb = new StringBuilder();
+	
+		// Add the return type if applicable (C macros like NULL have no type).
+		String type = getType();
+		if (type!=null) {
+			sb.append(type).append(' ');
+		}
+	
+		// Add the item being described's name.
+		sb.append(super.getName()); // without parentheses: will be added below with arguments inside
+	
+		// Add parameters for functions.
+		CompletionProvider provider = getProvider();
+		char start = provider.getParameterListStart();
+		if (start!=0) {
+			sb.append(start);
+		}
+		for (int i=0; i<getParamCount(); i++) {
+			Parameter param = getParam(i);
+			type = param.getType();
+			String name = param.getName();
+			if (type!=null) {
+				sb.append(type);
+				if (name!=null) {
+					sb.append(' ');
+				}
+			}
+			if (name!=null) {
+				sb.append(name);
+			}
+			if (i<super.getParamCount()-1) {
+				sb.append(provider.getParameterListSeparator());
+			}
+		}
+		char end = provider.getParameterListEnd();
+		if (end!=0) {
+			sb.append(end);
+		}
+	
+		return sb.toString();
+	}
+	
+	@Override
+	public String getSummary() {
+		// Return the CompletionText.getSummary() text, made by ClassUtil.getSummaryCompletion
+		// (In principle, the latter is a shortcut to the whole mechanism in superclass FunctionCompletion, but that's fine.)
+		return super.getShortDescription();
+	}
+	
+}