platform/platform-impl/src/com/intellij/openapi/editor/impl/EditorActionManagerImpl.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 package com.intellij.openapi.editor.impl;
  17
  18 import com.intellij.openapi.actionSystem.ActionManager;
  19 import com.intellij.openapi.editor.EditorBundle;
  20 import com.intellij.openapi.editor.ReadOnlyFragmentModificationException;
  21 import com.intellij.openapi.editor.Document;
  22 import com.intellij.openapi.editor.actionSystem.*;
  23 import com.intellij.openapi.ui.Messages;
  24 import com.intellij.injected.editor.DocumentWindow;
  25 import org.jetbrains.annotations.NotNull;
  26
  27 public class EditorActionManagerImpl extends EditorActionManager {
  28   private final TypedAction myTypedAction = new TypedAction();
  29   private ReadonlyFragmentModificationHandler myReadonlyFragmentsHandler = new DefaultReadOnlyFragmentModificationHandler();
  30   private final ActionManager myActionManager;
  31
  32   public EditorActionManagerImpl(ActionManager actionManager) {
  33     myActionManager = actionManager;
  34   }
  35
  36   public EditorActionHandler getActionHandler(@NotNull String actionId) {
  37     return ((EditorAction) myActionManager.getAction(actionId)).getHandler();
  38   }
  39
  40   public EditorActionHandler setActionHandler(@NotNull String actionId, @NotNull EditorActionHandler handler) {
  41     EditorAction action = (EditorAction)myActionManager.getAction(actionId);
  42     return action.setupHandler(handler);
  43   }
  44
  45   @NotNull
  46   public TypedAction getTypedAction() {
  47     return myTypedAction;
  48   }
  49
  50   public ReadonlyFragmentModificationHandler getReadonlyFragmentModificationHandler() {
  51     return myReadonlyFragmentsHandler;
  52   }
  53
  54   @Override
  55   public ReadonlyFragmentModificationHandler getReadonlyFragmentModificationHandler(@NotNull final Document document) {
  56     final Document doc = document instanceof DocumentWindow ? ((DocumentWindow)document).getDelegate() : document;
  57     final ReadonlyFragmentModificationHandler docHandler =
  58       doc instanceof DocumentImpl ? ((DocumentImpl)doc).getReadonlyFragmentModificationHandler() : null;
  59     return docHandler == null ? myReadonlyFragmentsHandler : docHandler;
  60   }
  61
  62   @Override
  63   public void setReadonlyFragmentModificationHandler(@NotNull final Document document, final ReadonlyFragmentModificationHandler handler) {
  64     final Document doc = document instanceof DocumentWindow ? ((DocumentWindow)document).getDelegate() : document;
  65     if (doc instanceof DocumentImpl) {
  66       ((DocumentImpl)document).setReadonlyFragmentModificationHandler(handler);
  67     }
  68   }
  69
  70   public ReadonlyFragmentModificationHandler setReadonlyFragmentModificationHandler(@NotNull ReadonlyFragmentModificationHandler handler) {
  71     ReadonlyFragmentModificationHandler oldHandler = myReadonlyFragmentsHandler;
  72     myReadonlyFragmentsHandler = handler;
  73     return oldHandler;
  74   }
  75
  76
  77   private static class DefaultReadOnlyFragmentModificationHandler implements ReadonlyFragmentModificationHandler {
  78     public void handle(ReadOnlyFragmentModificationException e) {
  79       Messages.showErrorDialog(EditorBundle.message("guarded.block.modification.attempt.error.message"),
  80                                EditorBundle.message("guarded.block.modification.attempt.error.title"));
  81     }
  82   }
  83 }
  84