// GraphSheetグラフ描画コントロールパネル
// JDK 1.0.2
// 1998 N.Inoue

import java.awt.*;

public class ControlPanel extends Panel
{
	// 色
	private final Color COLOR[] = {
		QuickColor.red,
		QuickColor.orange,
		QuickColor.limegreen,
		QuickColor.dodgerblue,
		QuickColor.blue,
		QuickColor.magenta
	};
	private final String COLORNAME[] = {
		"red",
		"orange",
		"limegreen",
		"dodgerblue",
		"blue",
		"magenta"
	};
	private final int COLORS = 6;
	
	// 変数、クラス
	private TextField inputtf;
	private TextField jumpnumtf;
	private TextField inputtfx;
	private TextField inputtfy;
	private TextField inputtff;
	private TextField inputtft;
	private GraphSheet graph;
	private Choice colchoice;
	private Choice graphchoice;
	private Checkbox linecheck;
	private Button drawbtn;
	private Button drawbtn_b;
	private Button clearbtn;
	private Panel northpanel;
	private Panel northpanel_b;
	private boolean indirect = false;
	
	public ControlPanel(GraphSheet gs)
	{
		super();
		// 引数が操作対象になる
		graph = gs;
		
		this.setLayout(new BorderLayout());
		
		// パネルのレイアウトコントローラの作成
		GridBagLayout gb = new GridBagLayout();
                GridBagConstraints gbc = new GridBagConstraints();
                gbc.fill = GridBagConstraints.HORIZONTAL;
                gbc.insets = new Insets(0, 2, 0, 2);
		
		// northパネルは式入力など
		northpanel = new Panel();
		Label ylbl = new Label("y=");
		inputtf = new TextField("x", 40);
		drawbtn = new Button("Draw");
		gbc.weightx = 0.6;
		gb.setConstraints(ylbl, gbc);
		gbc.weightx = 1.0;
		gb.setConstraints(drawbtn, gbc);
		gbc.weightx = 10.0;
		gb.setConstraints(inputtf, gbc);
		northpanel.setLayout(gb);
		northpanel.add(ylbl);
		northpanel.add(inputtf);
		northpanel.add(drawbtn);
		
		northpanel_b = new Panel();
		Label xis = new Label("x=", Label.RIGHT);
		Label yis = new Label("y=", Label.RIGHT);
		inputtfx = new TextField("t", 13);
		inputtfy = new TextField("t", 13);
		inputtff = new TextField("0.0", 4);
		inputtft = new TextField("10.0", 4);
		drawbtn_b = new Button("Draw");
                gbc.weightx = 0.5;
		gb.setConstraints(xis, gbc);
		gb.setConstraints(yis, gbc);
                gbc.weightx = 0.7;
		gb.setConstraints(inputtff, gbc);
		gb.setConstraints(inputtft, gbc);
                gbc.weightx = 1.0;
		gb.setConstraints(drawbtn_b, gbc);
		gbc.weightx = 5.0;
		gb.setConstraints(inputtfx, gbc);
		gb.setConstraints(inputtfy, gbc);
		northpanel_b.setLayout(gb);
		northpanel_b.add(xis);
		northpanel_b.add(inputtfx);
		northpanel_b.add(yis);
		northpanel_b.add(inputtfy);
		northpanel_b.add(drawbtn_b);
		northpanel_b.add(inputtff);
		northpanel_b.add(inputtft);
		
		// southパネルは表示オプションなど
		Panel southpanel = new Panel();
		colchoice = new Choice();
		for(int i = 0; i < COLORS; i++) colchoice.addItem(COLORNAME[i]);
		graphchoice = new Choice();
		graphchoice.addItem("y=x");
		graphchoice.addItem("x=t,y=t");
		linecheck = new Checkbox("Line");
		jumpnumtf = new TextField("0.01");
		clearbtn = new Button("All clear");
		Label jmplbl = new Label("Jump:", Label.RIGHT);
		Label collbl = new Label("Color:", Label.RIGHT);
		Label typlbl = new Label("Type:", Label.RIGHT);
		gbc.weightx = 0.8;
		gb.setConstraints(linecheck, gbc);
		gbc.weightx = 1.0;
		gb.setConstraints(jmplbl, gbc);
		gb.setConstraints(collbl, gbc);
		gb.setConstraints(typlbl, gbc);
		gb.setConstraints(clearbtn, gbc);
		gbc.weightx = 1.5;
		gb.setConstraints(jumpnumtf, gbc);
		gbc.weightx = 3.0;
		gb.setConstraints(colchoice, gbc);
		gb.setConstraints(graphchoice, gbc);
		southpanel.setLayout(gb);
		southpanel.add(jmplbl);
		southpanel.add(jumpnumtf);
		southpanel.add(linecheck);
		southpanel.add(collbl);
		southpanel.add(colchoice);
		southpanel.add(typlbl);
		southpanel.add(graphchoice);
		southpanel.add(clearbtn);
		
		// パネルを配置
		this.add("North", northpanel);
		this.add("South", southpanel);
		
		this.setBackground(Color.white);
	}
	
	public boolean action(Event evt, Object obj)
	{
		if(evt.target instanceof Choice)
		{
			if(evt.target == colchoice)
				graph.setGraphColor(COLOR[colchoice.getSelectedIndex()]);
			else
			{
				if(graphchoice.getSelectedIndex() == 0)
				{
					// ｙ＝ｘが選択されている／された
					if(indirect)
					{
						this.remove(northpanel_b);
						this.add("North", northpanel);
						indirect = false;
						validate();
					}
				}
				else if(graphchoice.getSelectedIndex() == 1)
				{
					// ｘ＝ｔ、ｙ＝ｔが選択されている／された
					if(!indirect)
					{
						this.remove(northpanel);
						this.add("North", northpanel_b);
						indirect = true;
						validate();
					}
				}
			}
		}
		if(evt.target instanceof Checkbox)
		{
			if(linecheck.getState())
				jumpnumtf.setText("0.1");
			else
				jumpnumtf.setText("0.01");
		}
		else if(evt.target == drawbtn)
		{
			graph.drawGraph(inputtf.getText(), linecheck.getState(),
			 Double.valueOf(jumpnumtf.getText()).doubleValue());
		}
		else if(evt.target == drawbtn_b)
		{
			graph.drawGraph(inputtfx.getText(), inputtfy.getText(), linecheck.getState(),
			 Double.valueOf(jumpnumtf.getText()).doubleValue(),
			 Double.valueOf(inputtff.getText()).doubleValue(),
			 Double.valueOf(inputtft.getText()).doubleValue());
		}
		else if(evt.target == clearbtn)
		{
			graph.clearGraph();
		}
		return true;
	}
}