Case Study: adding data and statistics

[ifi-stolz-refaktor.git] / case-study / jdt-after / ui / org / eclipse / jdt / ui / text / java / IQuickAssistProcessor.java

diff --git a/case-study/jdt-after/ui/org/eclipse/jdt/ui/text/java/IQuickAssistProcessor.java b/case-study/jdt-after/ui/org/eclipse/jdt/ui/text/java/IQuickAssistProcessor.java
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+/*******************************************************************************
+ * Copyright (c) 2000, 2005 IBM Corporation 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:
+ *     IBM Corporation - initial API and implementation
+ *
+ *******************************************************************************/
+package org.eclipse.jdt.ui.text.java;
+
+import org.eclipse.core.runtime.CoreException;
+
+
+/**
+ * Interface to be implemented by contributors to the extension point
+ * <code>org.eclipse.jdt.ui.quickAssistProcessors</code>.
+ *
+ * @since 3.0
+ */
+public interface IQuickAssistProcessor {
+
+       /**
+        * Evaluates if quick assists can be created for the given context. This evaluation must be precise.
+        *
+        * @param context The invocation context
+        * @return Returns <code>true</code> if quick assists can be created
+        * @throws CoreException CoreException can be thrown if the operation fails
+        */
+       boolean hasAssists(IInvocationContext context) throws CoreException;
+
+       /**
+        * Collects quick assists for the given context.
+        *
+        * @param context Defines current compilation unit, position and a shared AST
+        * @param locations The locations of problems at the invocation offset. The processor can decide to only
+        *                      add assists when there are no errors at the selection offset.
+        * @return Returns the assists applicable at the location or <code>null</code> if no proposals
+        *                      can be offered.
+        * @throws CoreException CoreException can be thrown if the operation fails
+        */
+       IJavaCompletionProposal[] getAssists(IInvocationContext context, IProblemLocation[] locations) throws CoreException;
+
+}