| /* |
| * Copyright 2000-2010 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.slicer; |
| |
| import com.intellij.icons.AllIcons; |
| import com.intellij.openapi.actionSystem.AnAction; |
| import com.intellij.openapi.actionSystem.AnActionEvent; |
| import com.intellij.psi.*; |
| |
| import javax.swing.tree.DefaultMutableTreeNode; |
| |
| /** |
| * User: cdr |
| */ |
| public class CanItBeNullAction extends AnAction { |
| private final SliceTreeBuilder myTreeBuilder; |
| private static final String TEXT = "Group by leaf expression nullness"; |
| |
| public CanItBeNullAction(SliceTreeBuilder treeBuilder) { |
| super(TEXT, "Determine whether null can flow into this expression", AllIcons.Debugger.Db_disabled_breakpoint_process); |
| myTreeBuilder = treeBuilder; |
| } |
| |
| @Override |
| public void update(AnActionEvent e) { |
| e.getPresentation().setText(TEXT + (myTreeBuilder.analysisInProgress ? " (Analysis in progress)" : "")); |
| e.getPresentation().setEnabled(isAvailable()); |
| } |
| |
| private boolean isAvailable() { |
| if (myTreeBuilder.analysisInProgress) return false; |
| if (!myTreeBuilder.dataFlowToThis) return false; |
| if (myTreeBuilder.splitByLeafExpressions) return false; |
| DefaultMutableTreeNode root = myTreeBuilder.getRootNode(); |
| if (root == null) return false; |
| SliceRootNode rootNode = (SliceRootNode)root.getUserObject(); |
| PsiElement element = rootNode == null ? null : rootNode.getRootUsage().getUsageInfo().getElement(); |
| PsiType type; |
| if (element instanceof PsiVariable) { |
| type = ((PsiVariable)element).getType(); |
| } |
| else if (element instanceof PsiExpression) { |
| type = ((PsiExpression)element).getType(); |
| } |
| else { |
| type = null; |
| } |
| return type instanceof PsiClassType || type instanceof PsiArrayType; |
| } |
| |
| @Override |
| public void actionPerformed(AnActionEvent e) { |
| myTreeBuilder.switchToLeafNulls(); |
| } |
| } |