1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
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;
}
}
|
