| /* |
| * Copyright 2000-2009 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.codeInsight.template.macro; |
| |
| import com.intellij.codeInsight.CodeInsightBundle; |
| import com.intellij.codeInsight.lookup.LookupElement; |
| import com.intellij.codeInsight.lookup.LookupItem; |
| import com.intellij.codeInsight.template.*; |
| import com.intellij.psi.PsiDocumentManager; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.PsiVariable; |
| import com.intellij.util.ArrayUtil; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.Arrays; |
| import java.util.LinkedList; |
| |
| public class SuggestVariableNameMacro extends Macro { |
| |
| @Override |
| public String getName() { |
| return "suggestVariableName"; |
| } |
| |
| @Override |
| public String getPresentableName() { |
| return CodeInsightBundle.message("macro.suggest.variable.name"); |
| } |
| |
| @Override |
| @NotNull |
| public String getDefaultValue() { |
| return "a"; |
| } |
| |
| @Override |
| public Result calculateResult(@NotNull Expression[] params, ExpressionContext context) { |
| String[] names = getNames(context); |
| if (names == null || names.length == 0) return null; |
| return new TextResult(names[0]); |
| } |
| |
| @Nullable |
| @Override |
| public Result calculateQuickResult(@NotNull Expression[] params, ExpressionContext context) { |
| return calculateResult(params, context); |
| } |
| |
| @Override |
| public LookupElement[] calculateLookupItems(@NotNull Expression[] params, final ExpressionContext context) { |
| String[] names = getNames(context); |
| if (names == null || names.length < 2) return null; |
| LookupItem[] items = new LookupItem[names.length]; |
| for(int i = 0; i < names.length; i++) { |
| String name = names[i]; |
| items[i] = LookupItem.fromString(name); |
| } |
| return items; |
| } |
| |
| private static String[] getNames (final ExpressionContext context) { |
| String[] names = ExpressionUtil.getNames(context); |
| if (names == null || names.length == 0) return names; |
| PsiFile file = PsiDocumentManager.getInstance(context.getProject()).getPsiFile(context.getEditor().getDocument()); |
| PsiElement e = file.findElementAt(context.getStartOffset()); |
| PsiVariable[] vars = MacroUtil.getVariablesVisibleAt(e, ""); |
| LinkedList<String> namesList = new LinkedList<String>(Arrays.asList(names)); |
| for (PsiVariable var : vars) { |
| if (e.equals(var.getNameIdentifier())) continue; |
| namesList.remove(var.getName()); |
| } |
| |
| if (namesList.isEmpty()) { |
| String name = names[0]; |
| index: |
| for (int j = 1; ; j++) { |
| String name1 = name + j; |
| for (PsiVariable var : vars) { |
| if (name1.equals(var.getName()) && !var.getNameIdentifier().equals(e)) continue index; |
| } |
| return new String[]{name1}; |
| } |
| } |
| |
| return ArrayUtil.toStringArray(namesList); |
| } |
| |
| @Override |
| public boolean isAcceptableInContext(TemplateContextType context) { |
| return context instanceof JavaCodeContextType; |
| } |
| |
| |
| } |