package king.notepad.view;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GraphicsEnvironment;
import java.awt.GridLayout;
import java.awt.Rectangle;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
import javax.swing.SwingConstants;

import king.notepad.actionlistener.ActionListenerFactory;
import king.notepad.itemlistener.ItemListenerFactory;
import king.notepad.listselectionlistener.ListSelectionListenerFactory;

//"字体"对话框
public class FontDialog extends JDialog {
 //获取系统字体
 private String[] font = GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames();
 //加入列表框
 private JList fontList = new JList(font);
 private JTextField fontText = new JTextField(10);
 //字形
 public static final String[] fontStyle = {"常规", "粗体", "倾斜", "粗偏斜体"}; //对应的字形常量值分别为0, 1, 2, 3
 private JList fontStyleList = new JList(fontStyle);
 private JTextField fontStyleText = new JTextField(10);
 //字体大小
 private Integer[] fontSize = {8, 9, 10,11,12,14,16,18,20,22,24,26,28,36,48,72};
 private JList fontSizeList = new JList(fontSize);
 private JTextField fontSizeText = new JTextField(10);
 //示例框
 private JLabel exampleLabel = new JLabel("AaBbYyZz");
 //脚本
 private String[] scenario = {"西欧语言", "中文 GB2312"};
 private String[] example = {"AaBbYyZz", "习定凝神,惩忿窒欲"};
 private JComboBox scenarioList = new JComboBox(scenario);
 private NotepadFrame frame;
 
 public FontDialog(NotepadFrame frame){
 super(frame, "字体");
 this.frame = frame;
 //设置对话框在Frame正中
 int frameX = (int)frame.getBounds().getX();
 int frameY = (int)frame.getBounds().getY();
 setBounds(frameX+40, frameY+80, 0, 0);
 //最上面的面板
 JPanel up = new JPanel();
 up.add(createFontList());
 up.add(createFontStyleList());
 up.add(createFontSizeList());
 add(up, BorderLayout.NORTH);
 //下方面板
 JPanel center = new JPanel();
 center.add(createExamplePanel());
 center.add(createScenarioPanel());
 //右下
 JPanel downRight = new JPanel(new GridLayout(2, 1, 0, 10));
 JButton ensure = new JButton("确定");
 ensure.addActionListener(ActionListenerFactory.getActionListener(this, "确定"));
 JButton cancel = new JButton("取消");
 cancel.addActionListener(ActionListenerFactory.getActionListener(this, "取消"));
 downRight.add(ensure);
 downRight.add(cancel);
 center.add(downRight);
 add(center);
 pack();
 setVisible(true);
 setDefaultCloseOperation(DISPOSE_ON_CLOSE);
 setResizable(false);
 }
 
 // 设置对应的TextArea的字体
 public void setTextAreaFont(Font font){
 frame.setTextAreaFont(font);
 }
 
 //根据示例ComboBox的选择值返回示例文本
 public String getScenarioListValue(){
 String select = (String)this.scenarioList.getSelectedItem();
 if("西欧语言".equals(select)){
 return example[0];
 }else{
 return example[1];
 }
 }
 
 // 设置示例JLabel的文字
 public void setExampleText(String text){
 this.exampleLabel.setText(text);
 }
 
 // 设置示例JLabel的字体
 public void setExampleFont(Font font){
 this.exampleLabel.setFont(font);
 }
 
 //设置字体大小List上方的文本框的值
 public void setFontSizeTextField(int n){
 this.fontSizeText.setText(String.valueOf(n));
 }
 
 //获取字体大小列表框的选择值
 public int getFontSizeListValue(){
 return (Integer)this.fontSizeList.getSelectedValue();
 }
 
 // 设置字形List上方的文本框的值
 public void setFontStyleTextField(String text){
 this.fontStyleText.setText(text);
 }
 
 //获取字形列表框的选中值,将它转化成字形常量值
 public int getFontStyleListValue(){
 String fontStyleName = (String)this.fontStyleList.getSelectedValue();
 for(int i = 0; i < fontStyle.length; i++){
 if(fontStyle[i].equals(fontStyleName)) return i;
 }
 return 0;
 }
 
 //设置字体JList上方的文本框的值
 public void setFontTextField(String text){
 this.fontText.setText(text);
 }
 
 //获取字体列表框的选择值
 public String getFontListValue(){
 return (String)this.fontList.getSelectedValue();
 }
 
 // 示例框用的脚本
 private JPanel createScenarioPanel(){
 JLabel label = new JLabel("脚本:");
 JPanel panel = new JPanel(new BorderLayout());
 panel.add(label, BorderLayout.NORTH);
 panel.add(scenarioList);
 scenarioList.addItemListener(ItemListenerFactory.getListener(this, "脚本"));
 panel.setBorder(BorderFactory.createEmptyBorder(0, 10, 0, 10));
 return panel;
 }
 
 // 示例框
 private JPanel createExamplePanel(){
 exampleLabel.setFont(frame.getTextAreaFont());
 exampleLabel.setHorizontalAlignment(SwingConstants.CENTER); 
 exampleLabel.setPreferredSize(new Dimension(200,40));
// exampleLabel.setBorder(BorderFactory.createEmptyBorder(10, 40, 10, 40));
 JPanel panel = new JPanel();
 panel.add(exampleLabel);
 panel.setBorder(BorderFactory.createTitledBorder("示例"));
// panel.setBorder(BorderFactory.createTitledBorder(
// BorderFactory.createEmptyBorder(10, 10, 10, 10), "示例"));
 return panel;
 }
 
 //字体大小列表框
 private JPanel createFontSizeList(){
 fontSizeList.setVisibleRowCount(7);
 fontSizeList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
 JScrollPane jsp = new JScrollPane(fontSizeList);
 //当前使用的字形
 int fontSize = frame.getTextAreaFont().getSize();
 fontSizeList.setSelectedValue(fontSize, true);
 fontSizeText.setText(String.valueOf(fontSizeList.getSelectedValue()));
 fontSizeList.addListSelectionListener(ListSelectionListenerFactory.getListener(this, "大小"));
 JLabel label = new JLabel("大小:");
 JPanel panel = new JPanel(new BorderLayout());
 panel.add(label, BorderLayout.NORTH);
 panel.add(this.fontSizeText);
 panel.add(jsp, BorderLayout.SOUTH);
 panel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
 return panel;
 }
 
 //字形列表框
 private JPanel createFontStyleList(){
 fontStyleList.setVisibleRowCount(7);
 fontStyleList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
 JScrollPane jsp = new JScrollPane(fontStyleList);
 //当前使用的字形
 int fontStyleConst = frame.getTextAreaFont().getStyle();
 fontStyleList.setSelectedValue(fontStyle[fontStyleConst], true);
 fontStyleText.setText((String)fontStyleList.getSelectedValue());
 fontStyleList.addListSelectionListener(ListSelectionListenerFactory.getListener(this, "字形"));
 JLabel label = new JLabel("字形:");
 JPanel panel = new JPanel(new BorderLayout());
 panel.add(label, BorderLayout.NORTH);
 panel.add(this.fontStyleText);
 panel.add(jsp, BorderLayout.SOUTH);
 panel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
 return panel;
 }
 
 // 字体列表框
 private JPanel createFontList(){
// 设置自定义文本渲染器,使每条列表显示它本身的字体
// 如果用此方法,则打开字体对话框时会卡几秒,故先取消
// fontList.setCellRenderer(new MyCellRenderer()); 
 fontList.setVisibleRowCount(7);
 JScrollPane jsp = new JScrollPane(fontList); //必须写在scrollRectToVisible之前才能使后者生效
 fontList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
 //当前使用的字体
 String fontName = frame.getTextAreaFont().getFamily(); //文本域使用的当前字体
 fontList.setSelectedValue(fontName, true); //选中字体
 fontText.setText((String)fontList.getSelectedValue());
 int index = fontList.getSelectedIndex(); //返回选中的索引
 Rectangle rect = fontList.getCellBounds(index, index);
 fontList.scrollRectToVisible(rect); //选中行显示在第一行
 fontList.addListSelectionListener(ListSelectionListenerFactory.getListener(this, "字体"));
 //放入滚动条
 //列表框上方的标签和输入框
 JLabel label = new JLabel("字体:");
 JPanel panel = new JPanel(new BorderLayout());
 panel.add(label, BorderLayout.NORTH);
 panel.add(fontText);
 panel.add(jsp, BorderLayout.SOUTH);
 panel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
 return panel;
 }
}