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java如何剪切本行代码 java字符串( 八 )

IT技术代码


popupMenu.addSeparator();
popupMenu.add(popupMenu_SelectAll);
//右键菜单注册事件
popupMenu_Undo.addActionListener(this);
popupMenu_Redo.addActionListener(this);
popupMenu_Cut.addActionListener(this);
popupMenu_Copy.addActionListener(this);
popupMenu_Paste.addActionListener(this);
popupMenu_Delete.addActionListener(this);
popupMenu_SelectAll.addActionListener(this);
//文本编辑区注册右键菜单事件
editArea.addMouseListener(
new MouseAdapter(){
public void mousePressed(MouseEvent e)
{
checkForTriggerEvent(e);
}
public void mouseReleased(MouseEvent e)
{
checkForTriggerEvent(e);
}
private void checkForTriggerEvent(MouseEvent e)
{
if(e.isPopupTrigger())
popupMenu.show(e.getComponent(),e.getX(),e.getY());
checkMenuItemEnabled();//设置剪切、复制、粘贴、删除等功能的可用性
editArea.requestFocus(); //编辑区获取焦点
}
});
//创建工具栏
JPanel toolBar=new JPanel();
toolBar.setLayout(new FlowLayout(FlowLayout.LEFT));
Icon newIcon=new ImageIcon("Icons/new.gif");
Icon openIcon=new ImageIcon("Icons/open.gif");
Icon saveIcon=new ImageIcon("Icons/save.gif");
Icon saveAsIcon=new ImageIcon("Icons/saveas.gif");
Icon printIcon=new ImageIcon("Icons/print.gif");
Icon undoIcon=new ImageIcon("Icons/undo.gif");
Icon redoIcon=new ImageIcon("Icons/redo.gif");
Icon cutIcon=new ImageIcon("Icons/cut.gif");
Icon copyIcon=new ImageIcon("Icons/copy.gif");
Icon pasteIcon=new ImageIcon("Icons/paste.gif");
Icon deleteIcon=new ImageIcon("Icons/delete.gif");
Icon searchIcon=new ImageIcon("Icons/search.gif");
Icon timeIcon=new ImageIcon("Icons/time.gif");
Icon fontIcon=new ImageIcon("Icons/font.gif");
Icon boldIcon=new ImageIcon("Icons/bold.gif");
Icon italicIcon=new ImageIcon("Icons/italic.gif");
Icon bgcolorIcon=new ImageIcon("Icons/bgcolor.gif");
Icon fgcolorIcon=new ImageIcon("Icons/fgcolor.gif");
Icon helpIcon=new ImageIcon("Icons/help.gif");
newButton= new JButton(newIcon);
openButton=new JButton(openIcon);
saveButton= new JButton(saveIcon);
saveAsButton=new JButton(saveAsIcon);
printButton=new JButton(printIcon);
undoButton=new JButton(undoIcon);
undoButton.setEnabled(false);
redoButton=new JButton(redoIcon);
redoButton.setEnabled(false);
cutButton=new JButton(cutIcon);
cutButton.setEnabled(false);
copyButton=new JButton(copyIcon);
copyButton.setEnabled(false);
pasteButton=new JButton(pasteIcon);
pasteButton.setEnabled(false);
deleteButton=new JButton(deleteIcon);
deleteButton.setEnabled(false);
searchButton=new JButton(searchIcon);
timeButton=new JButton(timeIcon);
fontButton=new JButton(fontIcon);
boldButton=new JButton(boldIcon);
italicButton=new JButton(italicIcon);
fgcolorButton=new JButton(fgcolorIcon);
bgcolorButton=new JButton(bgcolorIcon);
helpButton=new JButton(helpIcon);
newButton.setPreferredSize(new Dimension(22,22));
openButton.setPreferredSize(new Dimension(22,22));
saveButton.setPreferredSize(new Dimension(22,22));
saveAsButton.setPreferredSize(new Dimension(22,22));
printButton.setPreferredSize(new Dimension(22,22));
undoButton.setPreferredSize(new Dimension(22,22));
redoButton.setPreferredSize(new Dimension(22,22));
cutButton.setPreferredSize(new Dimension(22,22));
copyButton.setPreferredSize(new Dimension(22,22));
pasteButton.setPreferredSize(new Dimension(22,22));
deleteButton.setPreferredSize(new Dimension(22,22));
searchButton.setPreferredSize(new Dimension(22,22));
timeButton.setPreferredSize(new Dimension(22,22));
fontButton.setPreferredSize(new Dimension(22,22));
boldButton.setPreferredSize(new Dimension(22,22));

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