attributevaluecelleditor.java

JAVA开源LDAP浏览器jxplorer的源码!

        if (att.isEmpty())
        {
            label.setText(" ");
        }
        else
        {
            label.setText(att.getStringValue());    //TE: sets the table label to reflect the changes.
        }

        editorComponent = label;
    }

   /**
    *   Sets the postal address editor in the table cell whose attribute is
    *   a postalAddress ["1.3.6.1.4.1.1466.115.121.1.7"].
    *   @param att the attribute value to be set in the editor.
    */
    private void setBooleanEditor(AttributeValue att)
    {                              
        booleaneditor booleanEditor = new booleaneditor(owner, att);
        specialStringEditor = true;
        CBUtility.center(booleanEditor, owner);    	//TE: centres the attribute editor.
        booleanEditor.setStringValue(att);
        booleanEditor.setVisible(true);

        if (att.isEmpty())
        {
            label.setText(" ");
        }
        else
        {
            label.setText(att.getStringValue());    //TE: sets the table label to reflect the changes.
        }

        editorComponent = label;
    }

   /**
    *	Returns the syntax of the attribute value that is supplied
    *	@param att the attribute value for example 'Fred' from 'cn=Fred'.
	*	@return the syntax of the attribute for example for postalAddress the return string would be:
	*		'SYNTAX: 1.3.6.1.4.1.1466.115.121.1.41'.  If it fails to find the schema, it returns
    *       '1.3.6.1.4.1.1466.115.121.1.15' (DirectoryString) as a default.
	*/
	public String getAttributeSyntax(AttributeValue att)
	{
		String attID = att.getID();
        return getAttributeSyntaxFromName(attID);
    }

    /**
     *   This looks up the attribute syntax using the name of the attribute.
     * If none is found, it also checks to see if it is a 'SUP' of another
     * attribute, and tries to recursively get the schema from that.
     *  @param attID the name of the attribute to look up; e.g. 'cn'
     *  @return the syntax of the attribute (usually an OID, e.g. "1.3.6.1.4.1.1466.115.121.1.15")
     */
    private String getAttributeSyntaxFromName(String attID)
    {
        if (attID.indexOf(';') > 0)
            attID = attID.substring(0, attID.indexOf(';'));									//TE: for example: userCertificate;binary.

        try
        {
            if (datasource == null)
                throw new NamingException("No datasource!");

            SchemaOps schema = datasource.getSchemaOps();
            if (schema == null)
                throw new NamingException("No schema!");
                                               //TE: gets the schema.
            Attributes attSchema = schema.getAttributes("AttributeDefinition/" + attID);    //TE: gets the attribute definition.

            if (attSchema == null)
                throw new NamingException("No schema for AttributeDefinition/"+attID);

            Attribute attSyntax = attSchema.get("SYNTAX");                                  //TE: gets the Syntax of the attribute .

            if (attSyntax == null)                                              // maybe it's a 'SUP' entry...
            {
                Attribute supSchema = attSchema.get("SUP");
                if (supSchema == null)
                    throw new NamingException("Error processing attribute definition for " + attID + " no schema and no sup entry found");

                if (supSchema.get().toString().equals(attID))                   // 'SUP' is always single valued
                    throw new NamingException("recursive schema definition: " + attID + " sup of itself");

                return getAttributeSyntaxFromName(supSchema.get().toString());  // recursively find the syntax of the sup entry
            }
            else
            {
                String syntax = attSyntax.toString();
                if (syntax.startsWith("SYNTAX: "))
                    syntax = syntax.substring(8);
                return syntax;
            }
        }
        catch (NamingException e)
        {
            log.log(Level.WARNING, "Problem processing attribute definition: ", e);
            return "1.3.6.1.4.1.1466.115.121.1.15";  // default to 'DirectoryString'
        }
    }

   /**
    *    Does a quick check to make the binary handling sane (if necessary)
    *    before calling the super class stopCellEditing.
    */
     // Enough casts to fill a hindu temple.
    public boolean stopCellEditing()
    {
        if (binaryEditFlag)
        {
            return super.stopCellEditing();
        }
        else if (specialStringEditor)
        {
            return super.stopCellEditing();
        }

        Object o = getCellEditorValue();
        if (o == null) return true;  // not actually editing - redundant call.

        if (o instanceof AttributeValue)
        {
            AttributeValue v = (AttributeValue)o;

            if (editorComponent instanceof JTextField)
            {
                String userData = ((JTextField)editorComponent).getText();
                // Bug 4891 - limit the user to entering only a single space.
                int len = userData.length();
                if (len > 0)
                {
                    userData.trim();
                    if (userData.length() == 0)
                        userData = " ";  // multiple spaces are shortened to a single space. Technically we should

                    if (userData.length() != len)
                        ((JTextField)editorComponent).setText(userData);
                }
                v.update(userData);
            }
            else if (editorComponent instanceof CBJComboBox)
                v.update(((CBJComboBox)editorComponent).getSelectedItem());
            else
                log.warning("unknown editorComponent = " + editorComponent.getClass());
        }
        else
            log.warning("(AttValCellEdit) Not an Att Val: is " + o.getClass());

        setCellEditorValue(o);

        return super.stopCellEditing();
    }

   /**
    *    Checks if the user has clicked sufficient times to make the cell
    *    editable.
    */
    public boolean isCellEditable(EventObject e)
    {
        boolean editable = true;
        if (e instanceof MouseEvent)
        {
            editable = ((MouseEvent)e).getClickCount() >= clickCountToStart;
        }
        return editable;
    }

   /**
    *    Kicks of a separate binary editor by looking for a Java class with
    *    name of the attribute, plus the word 'Editor', and starting that
    *    up if it can be found.  (Otherwise it uses the default editor).
    */
    public void startBinaryEditor(AttributeValue att)
    {
        if (abstractEditor != null &&
            (abstractEditor instanceof Component) &&
            ((Component)abstractEditor).isVisible() )        //TE: checks if an editor is already open (i.e. if multiple clicks on a value in the table editor).
        {
            return;                                          //TE: do nothing...there is already an editor open.
        }

        if (att.isBinary()==false)  // should never happen!
            {log.warning("Error: non binary value passed to binary editor!"); return; }

        String attName = att.getID();
        int trim = attName.indexOf(";binary");
        if (trim>0)
            attName = attName.substring(0,trim);

        String className = "com.ca.directory.jxplorer.editor." + attName + "editor";

        try
        {
            Class c = null;
            if (myLoader == null)
            {
                System.out.println("using default loader for "+className );
                c = Class.forName(className);
            }
            else
            {
                System.out.println("looking for: " + className.toLowerCase());
                c = myLoader.loadClass(className.toLowerCase());
            }
            if (abstractbinaryeditor.class.isAssignableFrom(c))
            {
                Constructor constructor;
                if (owner instanceof Frame)
                {
                    constructor = c.getConstructor(new Class[] {java.awt.Frame.class});
                    abstractEditor = (abstractbinaryeditor) constructor.newInstance(new Object[] {owner});
                }
                else
                {
                    constructor = c.getConstructor(new Class[0]);
                    abstractEditor = (abstractbinaryeditor) constructor.newInstance(new Object[0]);
                }

                abstractEditor.setValue(att);
				if(abstractEditor instanceof basicbinaryeditor)		//TE: set the current DN in the editor.
					((basicbinaryeditor)abstractEditor).setDN(currentDN);
                else if(abstractEditor instanceof defaultbinaryeditor)		//TE: set the current DN in the editor.
                    ((defaultbinaryeditor)abstractEditor).setDN(currentDN);

                if (abstractEditor instanceof defaultbinaryeditor)
                {
                    ((defaultbinaryeditor)abstractEditor).showDialog(); //todo: TE:seems that the abstractEditor doesn't get set to null after it is closed...
                    abstractEditor = null;                              //todo: TE: so this is a hack to kill the dialog so that it opens the next time a user clicks on that attribute value.  It would be nice to fix this!
                }
                else if (abstractEditor instanceof Component)
                {
                    ((Component)abstractEditor).setVisible(true);
                }

                fireEditingStopped();  // everything is now being done by the separate binary editor window...
                return;  // ...and don't load default editor (below)
            }
            else
            {
                log.warning("error: can't load editor class " + className + " since it is not inherited from AbstractBinaryEditor\n");
            }

        }
        catch (NoSuchMethodException e)
        {
            log.log(Level.WARNING, "coding error in editor " + className+ " - using default binary editor instead.", e);
        }
        catch (ClassNotFoundException e)
        {
            log.info("(expected) can not find editor " + className + "\n" + e.toString()); // 'expected' error
            try
            {
                defaultbinaryeditor dbe = new defaultbinaryeditor(owner);  // kick off the default editor (creates an option dialog)
                dbe.setDN(currentDN);
                CBUtility.center(dbe, owner);    //TE: centers the window.
                dbe.setValue(att);
                dbe.showDialog();
            }
            catch (Exception e2)
            {
                log.log(Level.WARNING, "unable to start backup editor",  e2);
                e2.printStackTrace();
            }
        }
        catch (Exception e3)
        {
            log.log(Level.WARNING, "error loading editor " + className, e3);
            e3.printStackTrace();
        }
    }

   /**
    * Optionally register a new class loader for atribute value viewers to use.
    */
    public void registerClassLoader(ClassLoader loader)
    {
        myLoader = loader;
    }

   /**
    *   Returns the datasource.
    *   @param ds the datasource.
    */
    public void setDataSource(DataSource ds)
    {
        datasource = ds;
    }

   /**
    *   Sets the dn of the entry being modified.
    *   @param dn the DN of the entry being modified.
    */
    public void setDN(DN dn)
    {
        currentDN = dn;
    }

   /**
    *    Sets the the abstract editor (display editor for binary data - e.g. the audio player, or photo viewer), to null.
    */
    public void cleanupEditor()
    {
         abstractEditor = null;
    }
}