mytxt.java

东西比较杂

		}
		else if(e.getSource()==ji9||e.getSource()==jp_Cut){
			Txt.requestFocus();
			String s=Txt.getSelectedText();
			Transferable ts=new StringSelection(s);
			cb.setContents(ts, null);//要求Transferable对象
			Txt.replaceRange("", Txt.getSelectionStart(), Txt.getSelectionEnd());
			checkMenuItemEnabled();
		}
		else if(e.getSource()==ji10||e.getSource()==jp_Copy){
			Txt.requestFocus();
			String s=Txt.getSelectedText();
			Transferable ts=new StringSelection(s);
			cb.setContents(ts, null);//要求Transferable对象
			checkMenuItemEnabled();
		}
		else if(e.getSource()==ji11||e.getSource()==jp_Parst){
			/*Transferable s=cb.getContents(this);
			Txt.insert(s.toString(), Txt.getCaretPosition());
			checkMenuItemEnabled();*/
			//上面s.toString()并不同与下面的方法,可以试试比较,我试过了...
			Txt.requestFocus();
			Transferable contents=cb.getContents(this);
		        if(contents==null) return;
		        String text;
		        text="";
		        
		        try{
		            text=(String)contents.getTransferData(DataFlavor.stringFlavor);
		        }
		        catch(Exception exception){
		        }
		        
		       	Txt.replaceRange(text,Txt.getSelectionStart(),Txt.getSelectionEnd());
		       	checkMenuItemEnabled();
		       	///别人做的功能......
		}
		else if(e.getSource()==ji12||e.getSource()==jp_Del){
			Txt.requestFocus();
			Txt.replaceSelection("");
			checkMenuItemEnabled();
		}
		else if(e.getSource()==ji13){
			new MySearch();
		}
		else if(e.getSource()==ji14){
			search();
		}
		else if(e.getSource()==ji15){
			new Myreplace();
		}
		else if(e.getSource()==ji17||e.getSource()==jp_SelectAll){
			Txt.selectAll();
		}
		else if(e.getSource()==ji18){
			Txt.insert(new Date().toString(), Txt.getCaretPosition());
		}
		else if(e.getSource()==ji20){
			new MyFontDialog(MyTxt.this.Txt);
		}
		else if(e.getSource()==ji22){
			String aboutMe=new String("<center><br>点击我找百度<br>"+
												"<a href=http://www.baidu.com/>"+
												"http://www.baidu.com</a><br><br><br></center>");
			JFrame jf=new JFrame("帮助主题");
			final JEditorPane jep=new JEditorPane();
			jep.setEditable(false);
			jep.setContentType("text/html");
			jep.setText(aboutMe);
			jep.addHyperlinkListener(new HyperlinkListener(){
				public void hyperlinkUpdate(HyperlinkEvent e){
					if(e.getEventType()==HyperlinkEvent.EventType.ACTIVATED	){
						try{
							jep.setPage(e.getURL());
						}catch(IOException et){
							et.printStackTrace();
						}
					}
				}
			});//e.getURL()返回的不是aboutMe,而是有用的一个连接
			
			jf.setContentPane(new JScrollPane(jep));
			jf.setSize(new Dimension(300,300));
			jf.setLocation(new Point(200,200));
			jf.setVisible(true);
		}
		else if(e.getSource()==ji23){
			JOptionPane.showMessageDialog(this, "我的记事本\n过去,豆鱼的天空");
		}
	}
	class MySearch implements ActionListener{
		JDialog searchDialog;
		Container c;
		JPanel faxian;
		ButtonGroup jbg;
		JRadioButton jr1;
		JRadioButton jr2;
		JLabel content;
		final JButton jb;
		JButton jbcan;
		JCheckBox jc;
		JTextField tf;
		//String searchText;
		public MySearch(){
			position=0;
			searchDialog=new JDialog(MyTxt.this,"查找",false);
			faxian=new JPanel();
			tf=new JTextField(15);
			jbg=new ButtonGroup();
			jr1=new JRadioButton("向上");
			jr2=new JRadioButton("向下");
			content=new JLabel("查找内容(N):");
			jb=new JButton("查找下一个(F)");
			jbcan=new JButton("取消");
			jc=new JCheckBox("区分大小写");
			
			c=searchDialog.getContentPane();
			content.setDisplayedMnemonic('N');
			jb.setMnemonic('F');
			c.setLayout(null);
			
			content.setBounds(5,10,80,25);
			tf.setBounds(90,10,150,25);
			jb.setBounds(255,10,115,25);
			jbcan.setBounds(255,45,115,25);
			jc.setBounds(5,55,100,25);
			faxian.setBounds(110,38,130,55);
			faxian.setBorder(BorderFactory.createTitledBorder("方向"));
			jbg.add(jr1);
			jbg.add(jr2);
			jb.setEnabled(false);
			tf.setText(savesearch);
			tf.requestFocus();
			tf.selectAll();
			if(!tf.getText().equals(""))
				jb.setEnabled(true);
		    tf.addKeyListener(new KeyAdapter(){
		    	public void keyReleased(KeyEvent e){
		    		if(!tf.getText().equals(""))
		    			jb.setEnabled(true);
		    		else
		    			jb.setEnabled(false);
		    	}
		    	public void keyPressed(KeyEvent e){
		    		if(!tf.getText().equals(""))
		    			jb.setEnabled(true);
		    		else
		    			jb.setEnabled(false);
		    	}
		    });
			jr2.setSelected(true);
			faxian.add(jr1);
			faxian.add(jr2);
			jb.addActionListener(this);
			jbcan.addActionListener(this);
			c.add(content);
			c.add(tf);
			c.add(jb);
			c.add(faxian);
			c.add(jc);
			c.add(jbcan);
			searchDialog.setLocation(200,200);
			searchDialog.setSize(390,125);
			searchDialog.setResizable(false);
			searchDialog.setVisible(true);
		}
		public void actionPerformed(ActionEvent e){
			if(e.getSource()==jb){
				savesearch=tf.getText();
				endposition=savesearch.length();
				if(jr1.isSelected())
					selectjr=true;
				else
					selectjr=false;
				if(jc.isSelected())
					daxiao=true;
				else
					daxiao=false;
				search();
			}
			else 
				searchDialog.dispose();
		}
	}
	public void search(){//查找是从你的插入符位置开始查找
		Txt.requestFocus();
		String str=Txt.getText();
		if(!selectjr){
			if(daxiao){
				position=str.indexOf(savesearch,Txt.getCaretPosition());
				if(position==-1){
					JOptionPane.showMessageDialog(null, "向下查找已经没有你所要查找的对象!!!");
					return;
				}
				Txt.select(position, position+endposition);
			}
			else{
				position=str.toLowerCase().indexOf(savesearch.toLowerCase(), Txt.getCaretPosition());
				if(position==-1){
					JOptionPane.showMessageDialog(null, "向下查找已经没有你所要查找的对象!!!");
					return;
				}
				Txt.select(position, position+endposition);
			}
		}
		else{
			if(daxiao){
				position=str.lastIndexOf(savesearch, Txt.getCaretPosition()-endposition-1);
				if(position==-1){
					JOptionPane.showMessageDialog(null, "向上查找已经没有你所要查找的对象!!!");
					return;
				}
				Txt.select(position, position+endposition);
			}
			else{
				position=str.toLowerCase().lastIndexOf(savesearch.toLowerCase(), Txt.getCaretPosition()-endposition-1);
				if(position==-1){
					JOptionPane.showMessageDialog(null, "向上查找已经没有你所要查找的对象!!!");
					return;
				}
				Txt.select(position, position+endposition);
			}
		}
	}
	class Myreplace implements ActionListener{
		JLabel cha,tihuan;
		JTextField chafield,tifield;
		JButton chabutton,tihuanbutton,allbutton,canbutton;
		JCheckBox jcb;
		JDialog replaceDialog=new JDialog(MyTxt.this,"替换",false);
		public Myreplace(){
			cha=new JLabel("查找内容(N):");
			tihuan=new JLabel("替换为(P):");
			jcb=new JCheckBox("区分大小写(C)");
			chafield=new JTextField(15);
			tifield=new JTextField(15);
			chabutton=new JButton("查找下一个(F)");
			tihuanbutton=new JButton("替换(R)");
			allbutton=new JButton("全部替换(A)");
			canbutton=new JButton("取消");
			cha.setDisplayedMnemonic('N');
			tihuan.setDisplayedMnemonic('P');
			jcb.setMnemonic('C');
			chabutton.setMnemonic('F');
			tihuanbutton.setMnemonic('R');
			allbutton.setMnemonic('A');
			
			
			Container c=replaceDialog.getContentPane();
			c.setLayout(null);
			cha.setBounds(8,5,80,25);
			chafield.setBounds(90,5,160,25);
			tihuan.setBounds(8,35,80,25);
			tifield.setBounds(90,35,160,25);
			chabutton.setBounds(260,3,120,25);
			tihuanbutton.setBounds(260,33,120,25);
			allbutton.setBounds(260,63,120,25);
			canbutton.setBounds(260,93,120,25);
			jcb.setBounds(8,90,120,25);
			
			chabutton.setEnabled(false);
			tihuanbutton.setEnabled(false);
			allbutton.setEnabled(false);
			chafield.setText(savesearch);
			chafield.selectAll();
			chabutton.addActionListener(this);
			tihuanbutton.addActionListener(this);
			allbutton.addActionListener(this);
			canbutton.addActionListener(this);
			if(!chafield.getText().equals("")){
				chabutton.setEnabled(true);
				tihuanbutton.setEnabled(true);
				allbutton.setEnabled(true);
			}//为了实现当按纽可用或不可用,因为本人找不到有什么好的监听方法,所以用了这种...
			chafield.addKeyListener(new KeyAdapter(){
				public void keyReleased(KeyEvent e){
					if(chafield.getText().equals("")){
						chabutton.setEnabled(false);
						tihuanbutton.setEnabled(false);
						allbutton.setEnabled(false);
					}
					else{
						chabutton.setEnabled(true);
						tihuanbutton.setEnabled(true);
						allbutton.setEnabled(true);
					}
				}
				public void keyPressed(KeyEvent e){
					if(chafield.getText().equals("")){
						chabutton.setEnabled(false);
						tihuanbutton.setEnabled(false);
						allbutton.setEnabled(false);
					}
					else{
						chabutton.setEnabled(true);
						tihuanbutton.setEnabled(true);
						allbutton.setEnabled(true);
					}
				}
			});
			c.add(cha);
			c.add(tihuan);
			c.add(jcb);
			c.add(chabutton);
			c.add(tihuanbutton);
			c.add(allbutton);
			c.add(canbutton);
			c.add(chafield);
			c.add(tifield);
			replaceDialog.setResizable(false);
			replaceDialog.setSize(390,170);
			replaceDialog.setLocation(200, 200);
			replaceDialog.setVisible(true);
		}
		public void actionPerformed(ActionEvent e){
			if(e.getSource()==chabutton){
				savesearch=chafield.getText();
				endposition=savesearch.length();
				tihuandaxiao=jcb.isSelected();
				//search();//这里的区分大小不同与查找类中的,可以用传参实现公用一个函数....
				Txt.requestFocus();
				String str=Txt.getText();
				if(tihuandaxiao){
					position=str.indexOf(savesearch,Txt.getCaretPosition());
					if(position==-1){
						JOptionPane.showMessageDialog(null, "向下查找已经没有你所要查找的对象!!!");
						return;
					}
					Txt.select(position, position+endposition);
				}
				else{
					position=str.toLowerCase().indexOf(savesearch.toLowerCase(), Txt.getCaretPosition());
					if(position==-1){
						JOptionPane.showMessageDialog(null, "向下查找已经没有你所要查找的对象!!!");
						return;
					}
					Txt.select(position, position+endposition);
				}
			}
			else if(e.getSource()==tihuanbutton){
				Txt.requestFocus();
				savesearch=chafield.getText();
				tihuanText=tifield.getText();
				endposition=savesearch.length();
				tihuandaxiao=jcb.isSelected();
				String str=Txt.getText();
				if(tihuandaxiao){
					if(Txt.getSelectedText()==null){
						position=str.indexOf(savesearch,Txt.getCaretPosition());
						if(position==-1){
							JOptionPane.showMessageDialog(null, "向下查找已经没有你所要查找的对象!!!");
							return;
						}
						Txt.select(position, position+endposition);
					}
					else{
						Txt.replaceSelection(tihuanText);
						str=Txt.getText();
						position=str.indexOf(savesearch,Txt.getCaretPosition());
						if(position==-1){
							JOptionPane.showMessageDialog(null, "向下查找已经没有你所要查找的对象!!!");
							return;
						}
						Txt.select(position, position+endposition);
					}
				}
				else{
					if(Txt.getSelectedText()==null){//这里不与""比较
						position=str.toLowerCase().indexOf(savesearch.toLowerCase(), Txt.getCaretPosition());
						if(position==-1){
							JOptionPane.showMessageDialog(null, "向下查找已经没有你所要查找的对象!!!");
							return;
						}
						Txt.select(position, position+endposition);
					}
					else{
						Txt.replaceSelection(tihuanText);
						str=Txt.getText();//因为文本内容已经改变,所以要重新赋值,这点让我苦想了很久.....
						position=str.indexOf(savesearch,Txt.getCaretPosition());
						if(position==-1){
							JOptionPane.showMessageDialog(null, "向下查找已经没有你所要查找的对象!!!");
							return;
						}
						Txt.select(position, position+endposition);
					}
				}
			}
			else if(e.getSource()==allbutton){
				Txt.requestFocus();
				savesearch=chafield.getText();
				tihuanText=tifield.getText();
				endposition=savesearch.length();
				tihuandaxiao=jcb.isSelected();
				String str=Txt.getText();
				if(tihuandaxiao){
					Txt.setText(str.replaceAll(savesearch, tihuanText));
				}
				else{
					Txt.setText(str.replaceAll(savesearch.toLowerCase(), tihuanText));
					str=Txt.getText();
					Txt.setText(str.replaceAll(savesearch.toUpperCase(), tihuanText));
					//这里可能有点问题,如果文本很长,会不会滚动两次滚动条.....
				}
			}
			else
				replaceDialog.dispose();
			}
	}
}