htmleditor.java

Memoranda( 从前以jNotes2而闻名) 是一个日志管理和个人项目管理工具

package net.sf.memoranda.ui.htmleditor;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.Reader;
import java.io.StringReader;
import java.io.StringWriter;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Enumeration;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JEditorPane;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.JToolBar;
import javax.swing.KeyStroke;
import javax.swing.border.BevelBorder;
import javax.swing.border.Border;
import javax.swing.event.CaretEvent;
import javax.swing.event.CaretListener;
import javax.swing.event.UndoableEditEvent;
import javax.swing.event.UndoableEditListener;
import javax.swing.text.AbstractDocument;
import javax.swing.text.AttributeSet;
import javax.swing.text.Document;
import javax.swing.text.Element;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledEditorKit;
import javax.swing.text.html.HTML;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;
import javax.swing.text.html.StyleSheet;
import javax.swing.undo.CannotRedoException;
import javax.swing.undo.CannotUndoException;
import javax.swing.undo.UndoManager;

import net.sf.memoranda.ui.htmleditor.util.Local;

/**
 *  
 */
public class HTMLEditor extends JPanel {
	public HTMLEditorPane editor = new HTMLEditorPane("");


    JScrollPane jScrollPane1 = new JScrollPane();
    public HTMLEditorKit editorKit = new HTMLEditorKit();
    public HTMLDocument document = null;

	boolean bold = false;
	boolean italic = false;
	boolean under = false;
	boolean list = false;

	String currentTagName = "BODY";
	Element currentParaElement = null;

	Border border1, border2;

	Class cl = net.sf.memoranda.ui.htmleditor.HTMLEditor.class;

	String imagesDir = null;
	String imagesPath = null;

	public void setImagesDir(String path) {
		imagesDir = path;
	}

	public String getImagesDir() {
		return imagesDir;
	}

	abstract class HTMLEditorAction extends AbstractAction {
		HTMLEditorAction(String name, ImageIcon icon) {
			super(name, icon);
			super.putValue(Action.SHORT_DESCRIPTION, name);
		}
		HTMLEditorAction(String name) {
			super(name);
			super.putValue(Action.SHORT_DESCRIPTION, name);
		}
	}

	public Action boldAction =
		new HTMLEditorAction(
			Local.getString("Bold"),
			new ImageIcon(cl.getResource("resources/icons/bold.png"))) {
		public void actionPerformed(ActionEvent e) {
			boldActionB_actionPerformed(e);
		}
	};

	public Action italicAction =
		new HTMLEditorAction(
			Local.getString("Italic"),
			new ImageIcon(cl.getResource("resources/icons/italic.png"))) {
		public void actionPerformed(ActionEvent e) {
			italicActionB_actionPerformed(e);
		}
	};

	public Action underAction =
		new HTMLEditorAction(
			Local.getString("Underline"),
			new ImageIcon(cl.getResource("resources/icons/underline.png"))) {
		public void actionPerformed(ActionEvent e) {
			underActionB_actionPerformed(e);
		}
	};

	public Action ulAction =
		new HTMLEditorAction(
			Local.getString("Unordered list"),
			new ImageIcon(
				cl.getResource("resources/icons/listunordered.png"))) {
		public void actionPerformed(ActionEvent e) {
			ulActionB_actionPerformed(e);
		}
	};

	public Action olAction =
		new HTMLEditorAction(
			Local.getString("Ordered list"),
			new ImageIcon(cl.getResource("resources/icons/listordered.png"))) {
		public void actionPerformed(ActionEvent e) {
			olActionB_actionPerformed(e);
		}
	};

	public Action lAlignAction =
		new HTMLEditorAction(
			Local.getString("Align left"),
			new ImageIcon(cl.getResource("resources/icons/alignleft.png"))) {
		public void actionPerformed(ActionEvent e) {
			lAlignActionB_actionPerformed(e);
		}
	};

	public Action cAlignAction =
		new HTMLEditorAction(
			Local.getString("Align center"),
			new ImageIcon(cl.getResource("resources/icons/aligncenter.png"))) {
		public void actionPerformed(ActionEvent e) {
			cAlignActionB_actionPerformed(e);
		}
	};

	public Action rAlignAction =
		new HTMLEditorAction(
			Local.getString("Align right"),
			new ImageIcon(cl.getResource("resources/icons/alignright.png"))) {
		public void actionPerformed(ActionEvent e) {
			rAlignActionB_actionPerformed(e);
		}
	};

	/*
	 * public Action jAlignAction = new AbstractAction() { public void
	 * actionPerformed(ActionEvent e) { jAlignActionB_actionPerformed(e); }
	 */
	public Action imageAction =
		new HTMLEditorAction(
			Local.getString("Insert image"),
			new ImageIcon(cl.getResource("resources/icons/image.png"))) {
		public void actionPerformed(ActionEvent e) {
			imageActionB_actionPerformed(e);
		}
	};

	public Action tableAction =
		new HTMLEditorAction(
			Local.getString("Insert table"),
			new ImageIcon(cl.getResource("resources/icons/table.png"))) {
		public void actionPerformed(ActionEvent e) {
			tableActionB_actionPerformed(e);
		}
	};

	public Action linkAction =
		new HTMLEditorAction(
			Local.getString("Insert hyperlink"),
			new ImageIcon(cl.getResource("resources/icons/link.png"))) {
		public void actionPerformed(ActionEvent e) {
			linkActionB_actionPerformed(e);
		}
	};

	public Action propsAction =
		new HTMLEditorAction(
			Local.getString("Object properties"),
			new ImageIcon(cl.getResource("resources/icons/properties.png"))) {
		public void actionPerformed(ActionEvent e) {
			propsActionB_actionPerformed(e);
		}
	};

	public Action selectAllAction =
		new HTMLEditorAction(Local.getString("Select all")) {
		public void actionPerformed(ActionEvent e) {
			editor.selectAll();
		}
	};

	public Action insertHRAction =
		new HTMLEditorAction(
			Local.getString("Insert horizontal rule"),
			new ImageIcon(cl.getResource("resources/icons/hr.png"))) {
		public void actionPerformed(ActionEvent e) {
			/*
			 * String elName =
			 * document.getParagraphElement(editor.getCaretPosition()).getName();
			 * HTML.Tag tag = HTML.getTag(elName); if
			 * (elName.toUpperCase().equals("P-IMPLIED")) tag =
			 * HTML.Tag.IMPLIED; HTMLEditorKit.InsertHTMLTextAction hta = new
			 * HTMLEditorKit.InsertHTMLTextAction("insertHR", " <hr> ", tag,
			 * HTML.Tag.HR);
			 */
			try {
				editorKit.insertHTML(
					document,
					editor.getCaretPosition(),
					"<hr>",
					0,
					0,
					HTML.Tag.HR);
			} catch (Exception ex) {
				ex.printStackTrace();
			}

		}
	};

	CharTablePanel charTablePanel = new CharTablePanel(editor);

	boolean charTableShow = false;

	public JTabbedPane toolsPanel = new JTabbedPane();
	public boolean toolsPanelShow = false;

	public void showToolsPanel() {
		if (toolsPanelShow)
			return;
		this.add(toolsPanel, BorderLayout.SOUTH);
		toolsPanelShow = true;
	}

	public void hideToolsPanel() {
		if (!toolsPanelShow)
			return;
		this.remove(charTablePanel);
		toolsPanelShow = false;
	}

	void addCharTablePanel() {
		showToolsPanel();
		toolsPanel.addTab(Local.getString("Characters"), charTablePanel);
	}

	void removeCharTablePanel() {
		toolsPanel.remove(charTablePanel);
		if (toolsPanel.getTabCount() == 0)
			hideToolsPanel();
	}

	public Action insCharAction =
		new HTMLEditorAction(
			Local.getString("Insert character"),
			new ImageIcon(cl.getResource("resources/icons/char.png"))) {
		public void actionPerformed(ActionEvent e) {
			if (!charTableShow) {
				addCharTablePanel();
				charTableShow = true;
				insCharActionB.setBorder(border2);
			} else {
				removeCharTablePanel();
				charTableShow = false;
				insCharActionB.setBorder(border1);
			}
			insCharActionB.setBorderPainted(charTableShow);
		}
	};

	public Action findAction =
		new HTMLEditorAction(
			Local.getString("Find & Replace"),
			new ImageIcon(cl.getResource("resources/icons/find.png"))) {
		public void actionPerformed(ActionEvent e) {
			doFind();
		}
	};

	public InsertTableCellAction insertTableCellAction =
		new InsertTableCellAction();
	public InsertTableRowAction insertTableRowAction =
		new InsertTableRowAction();
	public BreakAction breakAction = new BreakAction();

	public Action cutAction = new HTMLEditorKit.CutAction();
	/*
	 * new AbstractAction() { public void actionPerformed(ActionEvent e) { if
	 * (editor.getSelectedText() == null) return; doCopy();
	 * editor.replaceSelection(""); }
	 *  
	 */

	public Action styleCopyAction = new HTMLEditorKit.CopyAction();
	//new DefaultEditorKit.CopyAction();

	public Action copyAction = styleCopyAction;
	/*
	 * new AbstractAction() { public void actionPerformed(ActionEvent e) { if
	 * (editor.getSelectedText() == null) return; doCopy(); }
	 */

	public Action stylePasteAction = new HTMLEditorKit.PasteAction();

		public Action pasteAction = //new HTMLEditorKit.PasteAction();

	new AbstractAction() {
		public void actionPerformed(ActionEvent e) {
				//editor.paste();
	doPaste();
		}
	};

	private void doCopy() {
		/*
		 * java.awt.datatransfer.Clipboard clip =
		 * java.awt.Toolkit.getDefaultToolkit().getSystemClipboard(); try {
		 * String text = editor.getSelectedText();
		 * //.getText(editor.getSelectionStart(),
		 * editor.getSelectionEnd()-editor.getSelectionStart());
		 * clip.setContents(new java.awt.datatransfer.StringSelection(text),
		 * null); } catch (Exception e) { e.printStackTrace();
		 */
		Element el = document.getParagraphElement(editor.getSelectionStart());
		if (el.getName().toUpperCase().equals("P-IMPLIED"))
			el = el.getParentElement();
		String elName = el.getName();
		StringWriter sw = new StringWriter();
		String copy;
		java.awt.datatransfer.Clipboard clip =
			java.awt.Toolkit.getDefaultToolkit().getSystemClipboard();
		try {
			editorKit.write(
				sw,
				document,
				editor.getSelectionStart(),
				editor.getSelectionEnd() - editor.getSelectionStart());
			copy = sw.toString();
			copy = copy.split("<" + elName + "(.*?)>")[1];
			copy = copy.split("</" + elName + ">")[0];
			clip.setContents(
				new java.awt.datatransfer.StringSelection(copy.trim()),
				null);
		} catch (Exception ex) {
			ex.printStackTrace();
		}
	}

	private void doPaste() {
		Clipboard clip =
			java.awt.Toolkit.getDefaultToolkit().getSystemClipboard();
		try {
			Transferable content = clip.getContents(this);
			if (content == null)
				return;
			String txt =
				content
					.getTransferData(new DataFlavor(String.class, "String"))
					.toString();
			document.replace(
				editor.getSelectionStart(),
				editor.getSelectionEnd() - editor.getSelectionStart(),
				txt,
				editorKit.getInputAttributes());
			//editor.replaceSelection(content.getTransferData(new
			// DataFlavor(String.class, "String")).toString());
			//editor.paste();
			//insertHTML(content.getTransferData(new DataFlavor(String.class,
			// "String")).toString(), editor.getCaretPosition());
			/*
			 * Element el =
			 * document.getParagraphElement(editor.getCaretPosition());
			 * insertTextInElement(el, content.getTransferData(new
			 * DataFlavor(String.class, "String")).toString(),
			 */

		} catch (Exception ex) {
			ex.printStackTrace();
		}
	}

	/*
	 * private void insertTextInElement(Element el, String text, int pos) {
	 * String elName = el.getName(); StringWriter sw = new StringWriter();
	 * String copy1; String copy2; try { StringWriter sw1 = new StringWriter();
	 * editorKit.write(sw1, document, el.getStartOffset(), pos -
	 * el.getStartOffset()); copy1 = sw1.toString(); StringWriter sw2 = new
	 * StringWriter(); editorKit.write(sw2, document, pos, el.getEndOffset() -
	 * pos); copy2 = sw2.toString(); String copy = copy1+text+copy2; ?)>")[1];
	 * copy = copy.split(" </" + elName + "> ")[0]; document.setInnerHTML(el,
	 * copy); } catch (Exception ex) { ex.printStackTrace(); }
	 */

	public Action zoomInAction = new AbstractAction() {
		public void actionPerformed(ActionEvent e) {
			doZoom(true);
		}
	};

	public Action zoomOutAction = new AbstractAction() {