editfont.java

简单的java文本编辑器

/*************************************************************************************
* 类名： EditFont                                                               
*                                                                    
* 功能： 此类为“字体选择对话框”生成所需的类，主要用于用户定义字体
*                                                                
**************************************************************************************/
package edit.com;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.border.*;

class EditFont extends JPanel
{
    private JPanel southPanel;
    private JPanel centerPanel;
    private boolean flag; //“字体选择对话框”是否正确返回
    private JDialog dialog;
    private JLabel[] labels = new JLabel[3];
    private JButton[] buttons = new JButton[2];//“确定”和“取消”按钮
    private JTextField[] textFields = new JTextField[3]; //分别显示字体的风格，大小，模式
    private JList[] lists = new JList[3];//字体风格列表，字体大小列表，字体模式列表
    private JTextField showText; //用于显示用户所定义的字体模型
    private FontSet fontSet = new FontSet(); //用于存储用户定义的字体数据
    private EditFontTools tool = new EditFontTool(); //工具类

    public EditFont()
    {
        setLayout( new BorderLayout() );

        southPanel = new JPanel();
        //生成”确认“和”取消“按钮
        buttons[0] = tool.createButton( new OkButtonAction( "   O k   " ) ,
                                        Color.orange );
        buttons[1] = tool.createButton( new CancelButtonAction( "Cancel" ) ,
                                        Color.orange );
        tool.addSouthPanel( buttons, southPanel );
        add( southPanel , BorderLayout.SOUTH );

        centerPanel = new JPanel();
        
        //生成用户操作面板
        addCenterPanel( centerPanel );
    }

	public boolean showDialog( Component c , String s )
	{
		flag = false;

		Frame owner = null;

		if( c instanceof Frame )
		{
			owner = ( Frame )c;
		}
		else
		{
			owner = ( Frame )SwingUtilities.getAncestorOfClass( Frame.class , c );
		}

		if( dialog == null || dialog.getOwner() != owner )
		{
			owner = null;
			dialog = new JDialog( owner , true );
			dialog.getContentPane().add( this );
			dialog.setResizable( false );
			dialog.setSize( 550 , 250 );
		}

		dialog.setTitle( s );
		dialog.show();

		return flag;
	}

	public FontSet getFontSet()
	{
		return fontSet;
	}

/*****************************************
private class or private function defined
******************************************/
    private void addCenterPanel( JPanel aPanel )
    {
        aPanel.setLayout( new GridBagLayout() );
        GridBagConstraints constraints = new GridBagConstraints();

        String[] labelText = { "   Style   " , "  Size  " , " Modal " };
        labels = tool.createLabel( labelText );

        //生成用于分别显示字体的风格，大小，模式的文本区域
        String[] textShow = { " Serif        " , "  5    " , " Bold         " };
        textFields = tool.createText( 3 , textShow );

        //分别生成字体风格列表，字体大小列表，字体模式列表
        String[] styleText = { " Serif       " , " SansSerif    " , " Monospaced   " ,
                               " Dialog      " , " DialogInput  " };
        String[] sizeText = { "  9   " , "  10   " , "  11   " , "  12  " ,
                              "  13  " , "  14   " , "  15   " , "  16  " , "  17  " ,
                              "  18  " , "  19   " };
        String[] modalText = { " Bold       " , " Italic      " ,
                               " BoldItalic   " , " Normal      " };
        lists[0] = tool.createList( styleText );
        lists[1] = tool.createList( sizeText );
        lists[2] = tool.createList( modalText );

        //生成用于显示用户所定义的字体模型的文本区
        showText = tool.createShowText( "   Test Font Express   " , fontSet );

        //用于使用滚动显示的模式来显示字体风格列表，字体大小列表，字体模式列表
        JScrollPane[] scrollPane =
            tool.addEditFontListListenerToList( lists,
                                                textFields ,
                                                showText ,
                                                fontSet );

//the first column
		Box temBox = tool.createVerticalBox( 6 );
		tool.addToCenterWithConstraint( temBox , constraints , aPanel, 0 , 0 , 3 , 1 , GridBagConstraints.NONE ,
	    	GridBagConstraints.WEST );

		tool.addToCenterWithConstraint( labels[0] , constraints , aPanel, 0 , 1 , 1 , 1 , GridBagConstraints.NONE ,
			GridBagConstraints.CENTER );

		Box temBox_2 = Box.createVerticalBox();
	    temBox_2.add( Box.createVerticalStrut( 4 ) );

		tool.addToCenterWithConstraint( temBox_2 , constraints , aPanel, 0 , 2 , 3 , 1 , GridBagConstraints.NONE ,
			GridBagConstraints.WEST );

	    textFields[0].setColumns( 10 );
	    tool.addToCenterWithConstraint( textFields[0] , constraints , aPanel, 0 , 3 , 1 , 1 , GridBagConstraints.NONE ,
	    	GridBagConstraints.WEST );

	    Box horizonBox = tool.createVerticalBox( 2 );
	    tool.addToCenterWithConstraint( horizonBox , constraints , aPanel, 0 , 4 , 1 , 1 , GridBagConstraints.NONE ,
	    	GridBagConstraints.WEST );

        tool.addToCenterWithConstraint( scrollPane[0] , constraints , aPanel, 0 , 5 , 1 , 1 , GridBagConstraints.NONE ,
	    	GridBagConstraints.WEST );
// the second column
		Box verticalBox = tool.createVerticalBox( 12 );
		tool.addToCenterWithConstraint( verticalBox , constraints , aPanel, 1 , 1 , 1 , 1 , GridBagConstraints.NONE ,
			GridBagConstraints.WEST );

//the third column
		tool.addToCenterWithConstraint( labels[1] , constraints , aPanel, 2 , 1 , 1 , 1 , GridBagConstraints.NONE ,
			GridBagConstraints.WEST );

	    textFields[1].setColumns( 5 );
	    tool.addToCenterWithConstraint( textFields[1] , constraints , aPanel, 2 , 3 , 1 , 1 , GridBagConstraints.NONE ,
	    	GridBagConstraints.WEST );

	    tool.addToCenterWithConstraint( scrollPane[1] , constraints , aPanel, 2 , 5 , 1 , 1 , GridBagConstraints.NONE ,
	    	GridBagConstraints.WEST );

//the forth column
		Box verticalBox_1 = tool.createVerticalBox( 12 );
		tool.addToCenterWithConstraint( verticalBox_1 , constraints , aPanel, 3 , 1 , 1 , 1 , GridBagConstraints.NONE ,
			GridBagConstraints.WEST );

//the fifth column
		tool.addToCenterWithConstraint( labels[2] , constraints , aPanel, 4 , 1 , 1 , 1 , GridBagConstraints.NONE ,
			GridBagConstraints.CENTER );

	    textFields[2].setColumns( 7 );
	    tool.addToCenterWithConstraint( textFields[2] , constraints , aPanel, 4 , 3 , 1 , 1 , GridBagConstraints.NONE ,
	    	GridBagConstraints.WEST );

	    tool.addToCenterWithConstraint( scrollPane[2] , constraints , aPanel, 4 , 5 , 1 , 1 , GridBagConstraints.NONE ,
	    	GridBagConstraints.WEST );

//the sixth column
	    Box verticalBox_2 = tool.createVerticalBox( 12 );
		tool.addToCenterWithConstraint( verticalBox_2 , constraints , aPanel, 5 , 1 , 1 , 1 , GridBagConstraints.NONE ,
			GridBagConstraints.WEST );

//the seventh column
	    tool.addToCenterWithConstraint( showText , constraints , aPanel, 6 , 5 , 1 , 1 , GridBagConstraints.BOTH ,
	    	GridBagConstraints.WEST );

		add( aPanel , BorderLayout.CENTER );
	}


    private class OkButtonAction extends AbstractAction
    {
        public OkButtonAction( String name )
        {
            putValue( Action.NAME , name );
        }

        public void actionPerformed( ActionEvent e )
        {
            flag = true;
            dialog.setVisible( false );
        }
    }

    private class CancelButtonAction extends AbstractAction
    {
        public CancelButtonAction( String name )
        {
            putValue( Action.NAME , name );
        }

        public void actionPerformed( ActionEvent e )
        {
            dialog.setVisible( false );
        }
    }
}