platform/lang-impl/src/com/intellij/ide/FileListPasteProvider.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.ide;
  18
  19 import com.intellij.openapi.actionSystem.DataContext;
  20 import com.intellij.openapi.actionSystem.LangDataKeys;
  21 import com.intellij.openapi.ide.CopyPasteManager;
  22 import com.intellij.openapi.project.Project;
  23 import com.intellij.openapi.vfs.LocalFileSystem;
  24 import com.intellij.openapi.vfs.VirtualFile;
  25 import com.intellij.psi.PsiDirectory;
  26 import com.intellij.psi.PsiElement;
  27 import com.intellij.psi.PsiFileSystemItem;
  28 import com.intellij.psi.PsiManager;
  29 import com.intellij.refactoring.copy.CopyFilesOrDirectoriesHandler;
  30
  31 import java.awt.datatransfer.DataFlavor;
  32 import java.awt.datatransfer.Transferable;
  33 import java.awt.datatransfer.UnsupportedFlavorException;
  34 import java.io.File;
  35 import java.io.IOException;
  36 import java.util.ArrayList;
  37 import java.util.List;
  38
  39 /**
  40  * @author yole
  41  */
  42 public class FileListPasteProvider implements PasteProvider {
  43   public void performPaste(DataContext dataContext) {
  44     Project project = LangDataKeys.PROJECT.getData(dataContext);
  45     final IdeView ideView = LangDataKeys.IDE_VIEW.getData(dataContext);
  46     if (project == null || ideView == null) return;
  47     List<File> fileList;
  48     try {
  49       final Transferable contents = CopyPasteManager.getInstance().getContents();
  50       //noinspection unchecked
  51       fileList = (List<File>)contents.getTransferData(DataFlavor.javaFileListFlavor);
  52     }
  53     catch (UnsupportedFlavorException e) {
  54       return;
  55     }
  56     catch (IOException e) {
  57       return;
  58     }
  59     if (fileList == null) return;
  60     List<PsiElement> elements = new ArrayList<PsiElement>();
  61     for (File file : fileList) {
  62       final VirtualFile vFile = LocalFileSystem.getInstance().refreshAndFindFileByIoFile(file);
  63       if (vFile != null) {
  64         final PsiManager instance = PsiManager.getInstance(project);
  65         PsiFileSystemItem item = vFile.isDirectory() ? instance.findDirectory(vFile) : instance.findFile(vFile);
  66         if (item != null) {
  67           elements.add(item);
  68         }
  69       }
  70     }
  71     if (elements.size() > 0) {
  72       final PsiDirectory dir = ideView.getOrChooseDirectory();
  73       if (dir != null) {
  74         new CopyFilesOrDirectoriesHandler().doCopy(elements.toArray(new PsiElement[elements.size()]), dir);
  75       }
  76     }
  77   }
  78
  79   public boolean isPastePossible(DataContext dataContext) {
  80     return true;
  81   }
  82
  83   public boolean isPasteEnabled(DataContext dataContext) {
  84     final Transferable contents = CopyPasteManager.getInstance().getContents();
  85     final IdeView ideView = LangDataKeys.IDE_VIEW.getData(dataContext);
  86     return contents.isDataFlavorSupported(DataFlavor.javaFileListFlavor) && ideView != null;
  87   }
  88 }