Question

I m Religioning with JEditorPane. 我需要简单的编辑。我先解决了这一问题,并修改了含有习惯(两)标签的超文本(见my Senior post )。它恰当地展示了该文件,现在我甚至可以it。我可以撰写案文,删除文字或习惯内容。我赢得了一场战斗,但 t子赢得了战争。下一个步骤令人遗憾地也非常成问题。我无法插入我的习俗标签。

我有习惯行动:

import my.own.HTMLEditorKit; //extends standard HTMLEditorKit
import my.own.HTMLDocument; //extends standard HTMLDocument

class InsertElementAction extends StyledTextAction {
    private static final long serialVersionUID = 1L;

    public InsertElementAction(String actionName) {
        super(actionName);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        JEditorPane editor = getEditor(e);

        if (editor == null)
            return;

        HTMLDocument doc = (HTMLDocument) editor.getDocument();
        HTMLEditorKit ekit = (HTMLEditorKit) editor.getEditorKit();
        int offset = editor.getSelectionStart();

        try {
            ekit.insertHTML(doc, offset, "<span>ahoj</span>", 0, 0, HTML.Tag.SPAN);
            Element ele = doc.getRootElements()[0];
            ele = ele.getElement(1).getElement(0);
            doc.setInnerHTML(ele, "<bar medium="#DEFAULT" type="packaged" source="identifier" />");
        }
        catch (BadLocationException ble) {
            throw new Error(ble);
        }
        catch (IOException ioe) {
            throw new Error(ioe);
        }
    }
}

它工作得当。页: 1 但我不能以这种方式插入非标准标签。我可以仅插入<条码><>代码/代码>,span,等等,但不是我的标签。我的帽子Im被迫使用:

ekit.insertHTML(doc, offset, "x<bar medium="#DEFAULT" type="packaged" source="identifier" />x", 0, 0, null);

有两个关键问题:

The custom tag must be bounded with non-whispace characters (here x)
The current element s body is split

在I插入span 元素后插入/p>parahojagraph。 Howerever known tag is allways included as child of one/code> elements and the result (e.g. for known tag x;p>par<x>ahoj</x>agraph。



The work is dead exhausting. I m faithing with this relatively simple task since weeks. I m already wasted. If the insertion won t to work, I can scrap it all...

Answer 1

我找到了工作。插手方式如下:

ModifiedHTMLDocument doc = (ModifiedHTMLDocument) editor.getDocument();
int offset = editor.getSelectionStart();
//insert our special tag (if the tag is not bounded with non-whitespace character, nothing happens)
doc.insertHTML(offset, "-<specialTag />-");
//remove leading and trailing minuses
doc.remove(offset, 1); //at the current position is the minus before tag inserted
doc.remove(offset + 1, 1); //the next sign is minus after new tag (the tag is nowhere)
//Note: no, you really cannot do that: doc.remove(offset, 2), because then the tag is deleted

缩略语包含一种方法insert sediment(),该方法称:

public void insertHTML(int offset, String htmlText) throws BadLocationException, IOException {
    if (getParser() == null)
        throw new IllegalStateException("No HTMLEditorKit.Parser");

    Element elem = getCurrentElement(offset);

    //the method insertHTML is not visible
    try {
        Method insertHTML = javax.swing.text.html.HTMLDocument.class.getDeclaredMethod("insertHTML",
                new Class[] {Element.class, int.class, String.class, boolean.class});
        insertHTML.setAccessible(true);
        insertHTML.invoke(this, new Object[] {elem, offset, htmlText, false});
    }
    catch (Exception e) {
        throw new IOException("The method insertHTML() could not be invoked", e);
    }
}

我们最后的砖箱是寻找目前要素的一种方法:

public Element getCurrentElement(int offset) {
    ElementIterator ei = new ElementIterator(this);
    Element elem, currentElem = null;
    int elemLength = Integer.MAX_VALUE;

    while ((elem = ei.next()) != null) { //looking for closest element
        int start = elem.getStartOffset(), end = elem.getEndOffset(), len = end - start;
        if (elem.isLeaf() || elem.getName().equals("html"))
            continue;
        if (start <= offset && offset < end && len <= elemLength) {
            currentElem = elem;
            elemLength = len;
        }
    }

    return currentElem;
}

这种方法也是<代码>的成员。经修订的超文本文件类别。

The solution is not pure, but it solves provisionally the problem. I hope I ll find a better kit. I m thinking about JWebEngine. That should be replacement for current poor HTMLEditorKit, but I don t know, whether it allows me to add my custom tags.

Answer 2

Hope this helps http://java-sl.com/custom_tag_html_kit.html

友情链接