1 files changed, 127 insertions, 0 deletions

diff --git a/platform/platform-api/src/com/intellij/codeInsight/editorActions/TextBlockTransferable.java b/platform/platform-api/src/com/intellij/codeInsight/editorActions/TextBlockTransferable.java
new file mode 100644
index 000000000000..7d972816769c
--- /dev/null
+++ b/platform/platform-api/src/com/intellij/codeInsight/editorActions/TextBlockTransferable.java
@@ -0,0 +1,127 @@
+/*
+ * Copyright 2000-2014 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.editorActions;
+
+import com.intellij.openapi.editor.RawText;
+import com.intellij.openapi.util.Comparing;
+import com.intellij.openapi.util.text.StringUtil;
+
+import java.awt.datatransfer.DataFlavor;
+import java.awt.datatransfer.Transferable;
+import java.awt.datatransfer.UnsupportedFlavorException;
+import java.io.IOException;
+import java.io.StringReader;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+
+public class TextBlockTransferable implements Transferable {
+  private final Collection<TextBlockTransferableData> myExtraData;
+  private final RawText myRawText;
+  private final String myText;
+  private final DataFlavor[] myTransferDataFlavors;
+
+  public TextBlockTransferable(String text, Collection<TextBlockTransferableData> extraData, RawText rawText) {
+    myText = text;
+    myExtraData = extraData;
+    myRawText = rawText;
+
+    List<DataFlavor> dataFlavors = new ArrayList<DataFlavor>();
+    Collections.addAll(dataFlavors, DataFlavor.stringFlavor, DataFlavor.plainTextFlavor);
+    final DataFlavor flavor = RawText.getDataFlavor();
+    if (myRawText != null && flavor != null) {
+      dataFlavors.add(flavor);
+    }
+    for(TextBlockTransferableData data: extraData) {
+      final DataFlavor blockFlavor = data.getFlavor();
+      if (blockFlavor != null) {
+        dataFlavors.add(blockFlavor);
+      }
+    }
+    myTransferDataFlavors = dataFlavors.toArray(new DataFlavor[dataFlavors.size()]);
+  }
+
+  @Override
+  public DataFlavor[] getTransferDataFlavors() {
+    return myTransferDataFlavors;
+  }
+
+  @Override
+  public boolean isDataFlavorSupported(DataFlavor flavor) {
+    DataFlavor[] flavors = getTransferDataFlavors();
+    for (DataFlavor flavor1 : flavors) {
+      if (flavor.equals(flavor1)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  @Override
+  public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, IOException {
+    try {
+      for(TextBlockTransferableData data: myExtraData) {
+        if (Comparing.equal(data.getFlavor(), flavor)) {
+          return data;
+        }
+      }
+      if (myRawText != null && Comparing.equal(RawText.getDataFlavor(), flavor)) {
+        return myRawText;
+      }
+      else if (DataFlavor.stringFlavor.equals(flavor)) {
+        return myText;
+      }
+      else if (DataFlavor.plainTextFlavor.equals(flavor)) {
+        return new StringReader(myText);
+      }
+    }
+    catch(NoClassDefFoundError e) {
+      // ignore
+    }
+    throw new UnsupportedFlavorException(flavor);
+  }
+
+  public static String convertLineSeparators(String text,
+                                             String newSeparator,
+                                             Collection<TextBlockTransferableData> transferableDatas) {
+    if (transferableDatas.size() > 0){
+      int size = 0;
+      for(TextBlockTransferableData data: transferableDatas) {
+        size += data.getOffsetCount();
+      }
+
+      int[] offsets = new int[size];
+      int index = 0;
+      for(TextBlockTransferableData data: transferableDatas) {
+        index = data.getOffsets(offsets, index);
+      }
+
+      text = StringUtil.convertLineSeparators(text, newSeparator, offsets);
+
+      index = 0;
+      for(TextBlockTransferableData data: transferableDatas) {
+        index = data.setOffsets(offsets, index);
+      }
+
+      return text;
+    }
+    else{
+      return StringUtil.convertLineSeparators(text, newSeparator);
+    }
+  }
+}
\ No newline at end of file