platform/lang-impl/src/com/intellij/codeInsight/daemon/impl/CodeFoldingPass.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package com.intellij.codeInsight.daemon.impl;
  18
  19 import com.intellij.codeHighlighting.TextEditorHighlightingPass;
  20 import com.intellij.codeInsight.folding.CodeFoldingManager;
  21 import com.intellij.openapi.editor.Editor;
  22 import com.intellij.openapi.progress.ProgressIndicator;
  23 import com.intellij.openapi.project.DumbAware;
  24 import com.intellij.openapi.project.Project;
  25 import com.intellij.openapi.project.IndexNotReadyException;
  26 import com.intellij.openapi.util.Key;
  27 import com.intellij.psi.PsiFile;
  28 import com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil;
  29 import org.jetbrains.annotations.NotNull;
  30
  31 class CodeFoldingPass extends TextEditorHighlightingPass implements DumbAware {
  32   private static final Key<Boolean> THE_FIRST_TIME = Key.create("FirstFoldingPass");
  33   private Runnable myRunnable;
  34   private final Editor myEditor;
  35   private final PsiFile myFile;
  36
  37   CodeFoldingPass(@NotNull Project project, @NotNull Editor editor, @NotNull PsiFile file) {
  38     super(project, editor.getDocument(), false);
  39     myEditor = editor;
  40     myFile = file;
  41   }
  42
  43   public void doCollectInformation(ProgressIndicator progress) {
  44     final boolean firstTime = myFile.getUserData(THE_FIRST_TIME) == null || myEditor.getUserData(THE_FIRST_TIME) == null;
  45     Runnable runnable = CodeFoldingManager.getInstance(myProject).updateFoldRegionsAsync(myEditor, firstTime);
  46     synchronized (this) {
  47       myRunnable = runnable;
  48     }
  49   }
  50
  51   public void doApplyInformationToEditor() {
  52     Runnable runnable;
  53     synchronized (this) {
  54       runnable = myRunnable;
  55     }
  56     if (runnable != null){
  57       try {
  58         runnable.run();
  59       }
  60       catch (IndexNotReadyException e) {
  61       }
  62     }
  63
  64     if (InjectedLanguageUtil.getTopLevelFile(myFile) == myFile) {
  65       myFile.putUserData(THE_FIRST_TIME, Boolean.FALSE);
  66       myEditor.putUserData(THE_FIRST_TIME, Boolean.FALSE);
  67     }
  68   }
  69 }