xeditor.java

JTREE的例子

	    update();
	    redoAction.update();
	}

	protected void update() {
	    if(undo.canUndo()) {
		setEnabled(true);
		putValue(Action.NAME, undo.getUndoPresentationName());
	    }
	    else {
		setEnabled(false);
		putValue(Action.NAME, "Undo");
	    }
	}
    }*/

  /*class RedoAction extends AbstractAction {
	public RedoAction() {
	    super("Redo");
	    setEnabled(false);
	}

	public void actionPerformed(ActionEvent e) {
	    try {
		undo.redo();
	    } catch (CannotRedoException ex) {
		System.out.println("Unable to redo: " + ex);
		ex.printStackTrace();
	    }
	    update();
	    undoAction.update();
	}

	protected void update() {
	    if(undo.canRedo()) {
		setEnabled(true);
		putValue(Action.NAME, undo.getRedoPresentationName());
	    }
	    else {
		setEnabled(false);
		putValue(Action.NAME, "Redo");
	    }
	}
    }*/


  public static void main(String[] arg)
  {
    class Trymain implements CountListener,ERCListener{
      Trymain(){}
      public void setCountText(String cou){}
      public void dispPopMen(MouseEvent e){}
    }
    JFrame jf=new JFrame("try it.");
    JScrollPane scroPan = new JScrollPane();
    jf.setSize(400,300);
    Xeditor xe=new Xeditor();
    Trymain tm=new Trymain();
    xe.addCountListener(tm);
    xe.addERCListener(tm);
    scroPan.getViewport().add(xe, null);
    jf.getContentPane().add(scroPan);
    JPanel panel=new JPanel();
   //panel.add(undoBtn);
    //panel.add(redoBtn);
    jf.getContentPane().add(panel,BorderLayout.SOUTH);
    //jf.getContentPane().add(jtf,BorderLayout.SOUTH);
    //FileDialog fd=new FileDialog(jf);
    //fd.setBounds(250,200,200,140);
    jf.show();
  }

  static class PlainEditorKit extends Ekit implements ViewFactory {

	/**
	 * Creates a copy of the editor kit.  This
	 * allows an implementation to serve as a prototype
	 * for others, so that they can be quickly created.
	 *
	 * @return the copy
	 */
        public Object clone() {
	    return new PlainEditorKit();
	}

	/**
	 * Fetches a factory that is suitable for producing
	 * views of any models that are produced by this
	 * kit.  The default is to have the UI produce the
	 * factory, so this method has no implementation.
	 *
	 * @return the view factory
	 */
        public ViewFactory getViewFactory() {
	    return this;
	}

	/**
	 * Creates a view from the given structural element of a
	 * document.
	 *
	 * @param elem  the piece of the document to build a view of
	 * @return the view
	 * @see View
	 */
        public View create(Element elem) {
            Document doc = elem.getDocument();
            Object i18nFlag
                = doc.getProperty("i18n"/*AbstractDocument.I18NProperty*/);
            if ((i18nFlag != null) && i18nFlag.equals(Boolean.TRUE)) {
                // build a view that support bidi
                return createI18N(elem);
            } else {
                return new WrappedPlainView(elem);
            }
        }

        View createI18N(Element elem) {
            String kind = elem.getName();
            if (kind != null) {
                if (kind.equals(AbstractDocument.ContentElementName)) {
                    return new PlainParagraph(elem);
                } else if (kind.equals(AbstractDocument.ParagraphElementName)){
                    return new BoxView(elem, View.Y_AXIS);
                }
            }
            return null;
        }

        /**
         * Paragraph for representing plain-text lines that support
         * bidirectional text.
         */
        static class PlainParagraph extends javax.swing.text.ParagraphView {

            PlainParagraph(Element elem) {
                super(elem);
                layoutPool = new LogicalView(elem);
                layoutPool.setParent(this);
            }

            protected void setPropertiesFromAttributes() {
                Component c = getContainer();
                if ((c != null)
                    && (! c.getComponentOrientation().isLeftToRight()))
                {
                    setJustification(StyleConstants.ALIGN_RIGHT);
                } else {
                    setJustification(StyleConstants.ALIGN_LEFT);
                }
            }

            /**
             * Fetch the constraining span to flow against for
             * the given child index.
             */
            public int getFlowSpan(int index) {
                Component c = getContainer();
                if (c instanceof JTextArea) {
                    JTextArea area = (JTextArea) c;
                    if (! area.getLineWrap()) {
                        // no limit if unwrapped
                        return Integer.MAX_VALUE;
                    }
                }
                return super.getFlowSpan(index);
            }

            protected SizeRequirements calculateMinorAxisRequirements(int axis,
                                                            SizeRequirements r)
            {
                SizeRequirements req
                    = super.calculateMinorAxisRequirements(axis, r);
                Component c = getContainer();
                if (c instanceof JTextArea) {
                    JTextArea area = (JTextArea) c;
                    if (! area.getLineWrap()) {
                        // min is pref if unwrapped
                        req.minimum = req.preferred;
                    }
                }
                return req;
            }

            /**
             * This class can be used to represent a logical view for
             * a flow.  It keeps the children updated to reflect the state
             * of the model, gives the logical child views access to the
             * view hierarchy, and calculates a preferred span.  It doesn't
             * do any rendering, layout, or model/view translation.
             */
            static class LogicalView extends CompositeView {

                LogicalView(Element elem) {
                    super(elem);
                }

                protected int getViewIndexAtPosition(int pos) {
                    Element elem = getElement();
                    if (elem.getElementCount() > 0) {
                        return elem.getElementIndex(pos);
                    }
                    return 0;
                }

                protected boolean
                updateChildren(DocumentEvent.ElementChange ec,
                               DocumentEvent e, ViewFactory f)
                {
                    return false;
                }

                protected void loadChildren(ViewFactory f) {
                    Element elem = getElement();
                    if (elem.getElementCount() > 0) {
                        super.loadChildren(f);
                    } else {
                        View v = new GlyphView(elem);
                        append(v);
                    }
                }

                public float getPreferredSpan(int axis) {
                    if( getViewCount() != 1 )
                        throw new Error("One child view is assumed.");

                    View v = getView(0);
                    //((GlyphView)v).setGlyphPainter(null);
                    return v.getPreferredSpan(axis);
                }

                /**
                 * Forward the DocumentEvent to the given child view.  This
                 * is implemented to reparent the child to the logical view
                 * (the children may have been parented by a row in the flow
                 * if they fit without breaking) and then execute the
                 * superclass behavior.
                 *
                 * @param v the child view to forward the event to.
                 * @param e the change information from the associated document
                 * @param a the current allocation of the view
                 * @param f the factory to use to rebuild if the view has
                 *          children
                 * @see #forwardUpdate
                 * @since 1.3
                 */
                protected void forwardUpdateToView(View v, DocumentEvent e,
                                                   Shape a, ViewFactory f) {
                    v.setParent(this);
                    super.forwardUpdateToView(v, e, a, f);
                }

                // The following methods don't do anything useful, they
                // simply keep the class from being abstract.

                public void paint(Graphics g, Shape allocation) {
                }

                protected boolean isBefore(int x, int y, Rectangle alloc) {
                    return false;
                }

                protected boolean isAfter(int x, int y, Rectangle alloc) {
                    return false;
                }

                protected View getViewAtPoint(int x, int y, Rectangle alloc) {
                    return null;
                }

                protected void childAllocation(int index, Rectangle a) {
                }
            }
        }
    }

  private void jbInit() throws Exception
  {
    this.setFont(new java.awt.Font("DialogInput", 0, 12));
    this.setForeground(new Color(0, 0, 100));
    this.setMargin(new Insets(0,6,0,0));
    this.addMouseListener(this);
  }
}