package ij.gui;
import ij.*;
import ij.process.*;
import java.awt.*;
import java.util.Vector;

/** This class implements the Plot Window's More>Contents Style dialog */
public class PlotContentsStyleDialog implements DialogListener {
    private Plot plot;

    /** Creator that sets a plot to use */
    public PlotContentsStyleDialog(Plot plot) {
        this.plot = plot;
    }

    /** Shows the dialog, with a given parent Frame */
    public void showDialog(Frame parent) {
        String[] designations = plot.getPlotObjectDesignations();
        if (designations.length==0) {
            IJ.error("Empty Plot");
            return;
        }
        String[] stylesBackup = new String[designations.length];
        for (int i=0; i<stylesBackup.length; i++)
            stylesBackup[i] = plot.getPlotObjectStyles(i);
        GenericDialog gd = new GenericDialog("Plot Contents Style", parent);
        IJ.wait(100);   //needed to avoid hanging
        gd.addChoice("Item:", designations, designations[0]);
        gd.addStringField("Color:", "#########");
        gd.addStringField("Secondary (fill) color:", "#########");
        gd.addNumericField("Line width: ", 1.0, 1);
        gd.addChoice("Symbol:", Plot.SORTED_SHAPES, Plot.SORTED_SHAPES[2]);
        gd.addDialogListener(this);
        IJ.wait(100);   //needed to avoid hanging
        updateDialog(gd, 0);    //fill in style for index 0

        gd.showDialog();
        if (gd.wasCanceled()) {
            for (int i=0; i<stylesBackup.length; i++)
                plot.setPlotObjectStyles(i, stylesBackup[i]);
        }
    }
    
    public boolean dialogItemChanged(GenericDialog gd, AWTEvent e) {
        if (e == null) return true; //gets called with e=null upon OK
        //IJ.log("dialogItemChanged e="+e);IJ.wait(50);
        int index = gd.getNextChoiceIndex();
        String color = gd.getNextString();
        String color2 = gd.getNextString();
        double width = gd.getNextNumber();
        String symbol = gd.getNextChoice();
        Choice designationsC = (Choice)(gd.getChoices().get(0));
        if (e.getSource() == designationsC)
            updateDialog(gd, index);
        else
            plot.setPlotObjectStyles(index, color.trim()+","+color2.trim()+","+(float)width+","+symbol);
        return true;
    }

    private void updateDialog(GenericDialog gd, int index) {
        Vector stringFields = gd.getStringFields();
        Vector choices = gd.getChoices();
        Choice designationsC = (Choice)(choices.get(0));
        TextField colorF = (TextField)(stringFields.get(0));
        TextField color2F = (TextField)(stringFields.get(1));
        TextField widthF = (TextField)(gd.getNumericFields().get(0));
        Choice symbolC = (Choice)(choices.get(1));
        String styleString = plot.getPlotObjectStyles(index);
        String[] items = styleString.split(",");
        //IJ.log(items.length+" items from "+allStyles[index]);
        colorF.setText(items[0]);
        color2F.setText(items[1]);
        widthF.setText(items[2]);
        if (items.length >= 4)
            symbolC.select(items[3]);
        String designation = designationsC.getSelectedItem();
        boolean isData = designation.startsWith("Data");
        boolean isText = designation.startsWith("Text");
        color2F.setEnabled(isData); //only (some) data symbols have secondary color
        widthF.setEnabled(!isText); //all non-Text types have line width
        symbolC.setEnabled(isData); //only data have a symbol to choose
    }

    public void setNPasses(int nPasses) {
    }

}