1 files changed, 106 insertions, 0 deletions
diff --git a/xml/impl/src/com/intellij/codeInsight/editorActions/HtmlCopyPastePreProcessor.java b/xml/impl/src/com/intellij/codeInsight/editorActions/HtmlCopyPastePreProcessor.java
new file mode 100644
index 000000000000..9e081ebebf6a
--- /dev/null
+++ b/xml/impl/src/com/intellij/codeInsight/editorActions/HtmlCopyPastePreProcessor.java
@@ -0,0 +1,106 @@
+/*
+ * 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.lang.html.HTMLLanguage;
+import com.intellij.openapi.diagnostic.Logger;
+import com.intellij.openapi.editor.CaretStateTransferableData;
+import com.intellij.openapi.editor.Editor;
+import com.intellij.openapi.editor.RawText;
+import com.intellij.openapi.ide.CopyPasteManager;
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.util.text.StringUtil;
+import com.intellij.psi.PsiFile;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import javax.swing.text.BadLocationException;
+import javax.swing.text.DefaultStyledDocument;
+import javax.swing.text.html.HTMLEditorKit;
+import javax.swing.text.rtf.RTFEditorKit;
+import java.awt.datatransfer.DataFlavor;
+import java.awt.datatransfer.Transferable;
+import java.awt.datatransfer.UnsupportedFlavorException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.StringWriter;
+
+/**
+ * @author Dennis.Ushakov
+ */
+public class HtmlCopyPastePreProcessor implements CopyPastePreProcessor {
+  private static final Logger LOG = Logger.getInstance(HtmlCopyPastePreProcessor.class);
+
+  private static final DataFlavor ourHtmlDataFlavor = buildDataFlavor("text/html;class=java.lang.String");
+  private static final DataFlavor ourRtfDataFlavor = buildDataFlavor("text/rtf;class=java.io.InputStream");
+
+  private static DataFlavor buildDataFlavor(final String flavor) {
+    try {
+      return new DataFlavor(flavor);
+    }
+    catch (ClassNotFoundException e) {
+      return null;
+    }
+  }
+
+  @Nullable
+  @Override
+  public String preprocessOnCopy(PsiFile file, int[] startOffsets, int[] endOffsets, String text) {
+    return null;
+  }
+
+  @NotNull
+  @Override
+  public String preprocessOnPaste(Project project, PsiFile file, Editor editor, String text, RawText rawText) {
+    if (file.getLanguage() != HTMLLanguage.INSTANCE) return text;
+
+    CopyPasteManager manager = CopyPasteManager.getInstance();
+    if (manager.areDataFlavorsAvailable(ourHtmlDataFlavor, ourRtfDataFlavor)) {
+      Transferable content = manager.getContents();
+      if (content != null && !content.isDataFlavorSupported(CaretStateTransferableData.FLAVOR)) {
+        try {
+          final String data = content.isDataFlavorSupported(ourHtmlDataFlavor) ? (String)content.getTransferData(ourHtmlDataFlavor) :
+                              convertFromRtfStream((InputStream)content.getTransferData(ourRtfDataFlavor));
+          if (!StringUtil.isEmpty(data)) return data;
+        }
+        catch (UnsupportedFlavorException e) {
+          LOG.error(e);
+        }
+        catch (IOException e) {
+          LOG.error(e);
+        }
+      }
+    }
+    return text;
+  }
+
+  private static String convertFromRtfStream(InputStream stream) {
+    final DefaultStyledDocument document = new DefaultStyledDocument();
+    try {
+      new RTFEditorKit().read(stream, document, 0);
+      final StringWriter writer = new StringWriter();
+      new HTMLEditorKit().write(writer, document, 0, document.getLength());
+      return writer.toString();
+    }
+    catch (IOException e) {
+      LOG.error(e);
+    }
+    catch (BadLocationException e) {
+      LOG.error(e);
+    }
+    return null;
+  }
+}