1 files changed, 98 insertions, 0 deletions
diff --git a/org.eclipse.ui.genericeditor/src/org/eclipse/ui/internal/genericeditor/ExtensionBasedTextViewerConfiguration.java b/org.eclipse.ui.genericeditor/src/org/eclipse/ui/internal/genericeditor/ExtensionBasedTextViewerConfiguration.java
new file mode 100644
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--- /dev/null
+++ b/org.eclipse.ui.genericeditor/src/org/eclipse/ui/internal/genericeditor/ExtensionBasedTextViewerConfiguration.java
@@ -0,0 +1,98 @@
+/*******************************************************************************
+ * 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:
+ *   Sopot Cela, Mickael Istria (Red Hat Inc.) - initial implementation
+ *******************************************************************************/
+package org.eclipse.ui.internal.genericeditor;
+
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import org.eclipse.core.runtime.Platform;
+import org.eclipse.core.runtime.content.IContentType;
+import org.eclipse.jface.preference.IPreferenceStore;
+import org.eclipse.jface.text.AbstractReusableInformationControlCreator;
+import org.eclipse.jface.text.DefaultInformationControl;
+import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.IInformationControl;
+import org.eclipse.jface.text.ITextHover;
+import org.eclipse.jface.text.contentassist.ContentAssistant;
+import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
+import org.eclipse.jface.text.contentassist.IContentAssistant;
+import org.eclipse.jface.text.presentation.IPresentationReconciler;
+import org.eclipse.jface.text.source.ISourceViewer;
+import org.eclipse.swt.widgets.Shell;
+import org.eclipse.ui.IEditorPart;
+import org.eclipse.ui.editors.text.TextSourceViewerConfiguration;
+
+/**
+ * The configuration of the {@link ExtensionBasedTextEditor}. It registers the proxy composite
+ * for hover, completion, syntax highlighting, and then those proxy take care of resolving to
+ * the right extensions on-demand.
+ * 
+ * @since 1.0
+ */
+public final class ExtensionBasedTextViewerConfiguration extends TextSourceViewerConfiguration {
+
+	private IEditorPart editor;
+	private Set<IContentType> contentTypes;
+
+	/**
+	 * 
+	 * @param editor the editor we're creating.
+	 * @param preferenceStore the preference store.
+	 */
+	public ExtensionBasedTextViewerConfiguration(IEditorPart editor, IPreferenceStore preferenceStore) {
+		super(preferenceStore);
+		this.editor = editor;
+	}
+
+	private Set<IContentType> getContentTypes() {
+		if (this.contentTypes == null) {
+			this.contentTypes = new HashSet<>(Arrays.asList(Platform.getContentTypeManager().findContentTypesFor(editor.getEditorInput().getName())));
+		}
+		return this.contentTypes;
+	}
+
+	@Override
+	public ITextHover getTextHover(ISourceViewer sourceViewer, String contentType) {
+		TextHoverRegistry registry= GenericEditorPlugin.getDefault().getHoverRegistry();
+		return registry.getAvailableHover(sourceViewer, getContentTypes());
+	}
+
+	@Override
+	public IContentAssistant getContentAssistant(ISourceViewer sourceViewer) {
+		ContentAssistProcessorRegistry registry= GenericEditorPlugin.getDefault().getContentAssistProcessorRegistry();
+		IContentAssistProcessor processor = new CompositeContentAssistProcessor(registry.getContentAssistProcessors(sourceViewer, getContentTypes()));
+		ContentAssistant res= new ContentAssistant();
+		res.setContextInformationPopupOrientation(ContentAssistant.CONTEXT_INFO_BELOW);
+		res.setProposalPopupOrientation(ContentAssistant.PROPOSAL_REMOVE);
+		res.enableColoredLabels(true);
+		res.setContentAssistProcessor(processor, IDocument.DEFAULT_CONTENT_TYPE);
+		res.setInformationControlCreator(new AbstractReusableInformationControlCreator() {
+			@Override
+			protected IInformationControl doCreateInformationControl(Shell parent) {
+				return new DefaultInformationControl(parent);
+			}
+		});
+		return res;
+	}
+
+	@Override
+	public IPresentationReconciler getPresentationReconciler(ISourceViewer sourceViewer) {
+		PresentationReconcilerRegistry registry = GenericEditorPlugin.getDefault().getPresentationReconcilerRegistry();
+		List<IPresentationReconciler> reconciliers = registry.getPresentationReconcilers(sourceViewer, getContentTypes());
+		if (!reconciliers.isEmpty()) {
+			return reconciliers.get(0);
+		}
+		return null;
+	}
+
+}