platform-api/src/com/intellij/openapi/fileChooser/FileSaverDescriptor.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.openapi.fileChooser;
  18
  19 import com.intellij.openapi.vfs.VirtualFile;
  20 import org.jetbrains.annotations.NotNull;
  21
  22 import java.util.Arrays;
  23 import java.util.List;
  24
  25 /**
  26  * Defines save dialog behaviour
  27  *
  28  * @author Konstantin Bulenkov
  29  * @see FileSaverDialog
  30  * @see FileChooserDescriptor
  31  * @since 9.0
  32  */
  33 public class FileSaverDescriptor extends FileChooserDescriptor implements Cloneable {
  34   private final List<String> extentions;
  35
  36   /**
  37    * Constructs save dialog properties
  38    *
  39    * @param title save dialog text title (not window title)
  40    * @param description description
  41    * @param extentions accepted file extentions: "txt", "jpg", etc. Accept all if empty
  42    */
  43   public FileSaverDescriptor(@NotNull String title, @NotNull String description, String... extentions) {
  44     super(true, true, true, true, false, false);
  45     setTitle(title);
  46     setDescription(description);
  47     this.extentions = Arrays.asList(extentions);
  48   }
  49
  50   @Override
  51   public boolean isFileVisible(VirtualFile file, boolean showHiddenFiles) {
  52     return extentions.isEmpty() || file.isDirectory() ?
  53            super.isFileVisible(file, showHiddenFiles)
  54            :
  55            extentions.contains(file.getExtension());
  56   }
  57
  58   /**
  59    * Returns accepted file extentions
  60    *
  61    * @return accepted file extentions
  62    */
  63   public String[] getFileExtentions() {
  64     return extentions.toArray(new String[extentions.size()]);
  65   }
  66 }