1 files changed, 93 insertions, 0 deletions
diff --git a/org.eclipse.ui.genericeditor/src/org/eclipse/ui/internal/genericeditor/CompositeContentAssistProcessor.java b/org.eclipse.ui.genericeditor/src/org/eclipse/ui/internal/genericeditor/CompositeContentAssistProcessor.java
new file mode 100644
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+++ b/org.eclipse.ui.genericeditor/src/org/eclipse/ui/internal/genericeditor/CompositeContentAssistProcessor.java
@@ -0,0 +1,93 @@
+/*******************************************************************************
+ * Copyright (c) 2016 Red Hat Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * - Mickael Istria (Red Hat Inc.)
+ *******************************************************************************/
+package org.eclipse.ui.internal.genericeditor;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.eclipse.jface.text.ITextViewer;
+import org.eclipse.jface.text.contentassist.ICompletionProposal;
+import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
+import org.eclipse.jface.text.contentassist.IContextInformation;
+import org.eclipse.jface.text.contentassist.IContextInformationValidator;
+
+/**
+ * A content assist processor that delegates all content assist
+ * operations to children provided in constructor and aggregates
+ * the results.
+ * 
+ * @since 1.0
+ */
+public class CompositeContentAssistProcessor implements IContentAssistProcessor {
+
+	private List<IContentAssistProcessor> fContentAssistProcessors;
+
+	/**
+	 * Constructor
+	 * @param contentAssistProcessors the children that will actually populate the output
+	 *        of this content assist processor.
+	 */
+	public CompositeContentAssistProcessor(List<IContentAssistProcessor> contentAssistProcessors) {
+		fContentAssistProcessors= contentAssistProcessors;
+	}
+
+	@Override
+	public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int offset) {
+		List<ICompletionProposal> res = new ArrayList<>();
+		for (IContentAssistProcessor processor : this.fContentAssistProcessors) {
+			res.addAll(Arrays.asList(processor.computeCompletionProposals(viewer, offset)));
+		}
+		return res.toArray(new ICompletionProposal[res.size()]);
+	}
+
+	@Override
+	public IContextInformation[] computeContextInformation(ITextViewer viewer, int offset) {
+		List<IContextInformation> res = new ArrayList<>();
+		for (IContentAssistProcessor processor : this.fContentAssistProcessors) {
+			res.addAll(Arrays.asList(processor.computeContextInformation(viewer, offset)));
+		}
+		return res.toArray(new IContextInformation[res.size()]);
+	}
+
+	@Override
+	public char[] getCompletionProposalAutoActivationCharacters() {
+		return null;
+	}
+
+	@Override
+	public char[] getContextInformationAutoActivationCharacters() {
+		return null;
+	}
+
+	@Override
+	public String getErrorMessage() {
+		StringBuilder res = new StringBuilder();
+		for (IContentAssistProcessor processor : this.fContentAssistProcessors) {
+			String errorMessage = processor.getErrorMessage();
+			if (errorMessage != null) {
+				res.append(errorMessage);
+				res.append('\n');
+			}
+		}
+		if (res.length() == 0) {
+			return null;
+		} else {
+			return res.toString();
+		}
+	}
+
+	@Override
+	public IContextInformationValidator getContextInformationValidator() {
+		return null;
+	}
+
+}
+\ No newline at end of file