内联复制粘贴JEditorPane HTML [英] inline copy paste JEditorPane HTML

问题描述

我绝望地试图在HTML模式下在JTextPane中实现自定义的复制/粘贴。
大部分工作正常，我使用EditorKit.write（）获取html内容，我使用editorKit.read（）粘贴它。完美的世界。

I'm desperatly trying to implement a customized copy/paste in a JTextPane in HTML mode. The most part is working well, I get the html content using EditorKit.write(), I paste it using editorKit.read(). Perfect world.

但是当我有：< p>在我的编辑器中测试< / p> ，我尝试复制es以获得
< p> tesest< / p> ，我取而代之

BUT, when I have : <p> test </p> in my editor and I try to copy "es" to obtain <p> tesest </p>, I obtain instead

<p>tes</p>
<p>es</p>
<p>t</p>

知道，我试图找出一种方法来粘贴内联部分应该是内联，并阻止复制期间阻止的部分。通常，如果我有：

Knowing that, I m trying to figure out a way to paste "inline" the part supposed to be inline, and in block the part which was in block during the copy. Typically,

if I have :

<p>mon beau sapin</p>
<p>roi des forêts</p>
<p>que j'aime ta verdure</p>

如果我复制：

beau sapin</p>
<p>roi des forêts</p>
<p>que

并将其粘贴到mon之后，我期望： / p>

And paste it after "mon", I expect :

<p>mon beau sapin</p>
<p>roi des forêts</p>
<p>que beau sapin</p>
<p>roi des forêts</p>
<p>que j'aime ta verdure</p>

我取而代之：

<p>mon</p>
<p>beau sapin</p>
<p>roi des forêts</p>
<p>que</p>
<p>beau sapin</p>
<p>roi des forêts</p>
<p>que j'aime ta verdure</p>

我尝试过各种方法，如删除< p>< /第一行和最后一行（EditorKit.read自己添加它）的p> ，使用editorKit.insertHTML（但是我应该放什么样的标签？），逐行插入（大部分次，我在另一个 p 中获得一个 p

I tried various approach, like removing the <p></p> of the first and last lines (EditorKit.read add it back by itself), using editorKit.insertHTML (but what kind of Tag should I put ?), insert line by line (most part of times, I obtain a p inside another p) etc.

但真正的问题是无法在htmlDocument中写出所需的内容。我如何写 sapin< / p> < p> roi 在指定的位置？
EditorKit.read？它将添加< p> sapin< / p> < p> roi< / p>
Editorkit.insertHTML？我需要精确的一个包装标签...

but the real problem that it's impossible to write what you want in the htmlDocument. How can I write sapin</p> <p>roi at a specified position ? EditorKit.read ? it will add <p>sapin</p> <p>roi</p> Editorkit.insertHTML ? I need to precise a wrapping Tag...

我给你看看我最后一次尝试：

I show you my last try :

    private static void insertHTMLContent(JMathTextPane jtp, String html, int offset) {
        Document doc = Jsoup.parse(html);
        Elements elts = doc.body().children();
        //unwrap the last and first element
        if(elts.size()>2) { elts.last().unwrap(); }
        if(elts.size()>=1) { elts.first().unwrap(); }
        //We add a fake DIV element and remove it just at the next line
        editorKit.insertHTML(jtp.htmlDoc, offset, "<div id='copie'>"+doc.body().html()+"</div>", 0, 0, HTML.Tag.DIV);
        jtp.getHTMLdoc().setOuterHTML(jtp.getHTMLdoc().getElement("copie"),doc.body().html());
    }

我无法显示结果：EditorKit.write尝试修复html本身。但是HTMLDocument是完全凌乱的。

I can't show you the result : EditorKit.write tries to fix the html by itself. But the HTMLDocument is completely messy.

要尝试：

public class Test {

private static JTextPane editor = new Editor();
private static JMenuBar menu = new Menu();
private static String clipboard = "";

private static Action copy = new Copy();
private static Action paste = new Paste();

public static void main(String[] args) {
    JFrame f = new JFrame();
    f.setContentPane(editor);
    f.setJMenuBar(menu);
    f.setSize(600, 400);
    f.setVisible(true);
}

public static class Editor extends JTextPane {
    public Editor() {
        this.setDocument(new HTMLDocument());
        this.setEditorKit(new HTMLEditorKit());
    }
}

public static class Menu extends JMenuBar {
    public Menu() {
        add(new JButton(copy));
        add(new JButton(paste));

        getInputMap().put(KeyStroke.getKeyStroke(KeyEvent.VK_C, InputEvent.CTRL_DOWN_MASK), "copy");
        getInputMap().put(KeyStroke.getKeyStroke(KeyEvent.VK_V, InputEvent.CTRL_DOWN_MASK), "paste");
        getActionMap().put("copy", copy);
        getActionMap().put("paste", paste);
    }
}

public static class Copy extends AbstractAction {
    public Copy() {super("copy");}
    @Override
    public void actionPerformed(ActionEvent e) {
        StringWriter w = new StringWriter();
        try {
            editor.getEditorKit().write(w, editor.getDocument(), editor.getCaretPosition(), editor.getSelectedText().length());
        } catch (Exception ex) {Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);}
        clipboard = w.toString();
    }
}
public static class Paste extends AbstractAction {
    public Paste() {super("paste");}
    @Override
    public void actionPerformed(ActionEvent e) {
        try {
            editor.getEditorKit().read(new StringReader(clipboard), editor.getDocument(), editor.getCaretPosition());
        } catch (Exception ex) {Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);}
    }
}
}

对不起我很久我接受任何帮助。

Sorry I was long. I accept any help.

推荐答案

对于更多的读者，我用一个很简单的方法解决了这个问题。我刚刚删除了在需要时粘贴的文本之前和之后添加的 \\\
。

For further readers, I solved it with a very easy trick. I just removed the \n added before and after the pasted text when needed.

public static void copyContent(JTextPane jtp, String text, int offset) {
    try {
        boolean start = offset>0 ? !jtp.getText(offset-1, 1).equals("\n") : false;
        Position p = jtp.getDocument().createPosition(offset);
        new HTMLEditorKit().read(new StringReader(html), jtp.getHTMLdoc(), offset);
        if(start) {jtp.getDocument().remove(offset, 1);}
        if(offset>0) {jtp.getDocument().remove(p.getOffset()-1, 1);}
    } catch (IOException | BadLocationException ex) {
        Logger.getLogger(EditeurIO.class.getName()).log(Level.SEVERE, null, ex);
    }
}

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