package ij.io;
import ij.gui.GenericDialog;
import java.awt.*;
import java.io.*;
import javax.swing.*;
import javax.swing.filechooser.*;
import ij.*;
import ij.plugin.frame.Recorder;
import ij.util.Java2;
import ij.macro.Interpreter;

/** This class displays a dialog window from 
	which the user can save a file. */ 
public class SaveDialog {

	private String dir;
	private String name;
	private String title;
	private String ext;
	
	/** Displays a file save dialog with 'title' as the 
		title, 'defaultName' as the initial file name, and
		'extension' (e.g. ".tif") as the default extension.
	*/
	public SaveDialog(String title, String defaultName, String extension) {
		this.title = title;
		ext = extension;
		if (isMacro())
			return;
		String defaultDir = OpenDialog.getDefaultDirectory();
		defaultName = setExtension(defaultName, extension);
		if (Prefs.useJFileChooser)
			jSave(title, defaultDir, defaultName);
		else
			save(title, defaultDir, defaultName);
		if (name!=null && dir!=null)
			OpenDialog.setDefaultDirectory(dir);
		IJ.showStatus(title+": "+dir+name);
	}
	
	/** Displays a file save dialog, using the specified 
		default directory and file name and extension. */
	public SaveDialog(String title, String defaultDir, String defaultName, String extension) {
		this.title = title;
		ext = extension;
		if (isMacro())
			return;
		defaultName = setExtension(defaultName, extension);
		if (Prefs.useJFileChooser)
			jSave(title, defaultDir, defaultName);
		else
			save(title, defaultDir, defaultName);
		IJ.showStatus(title+": "+dir+name);
	}
	
	boolean isMacro() {
		String macroOptions = Macro.getOptions();
		if (macroOptions!=null) {
			String path = Macro.getValue(macroOptions, title, null);
			if (path==null)
				path = Macro.getValue(macroOptions, "path", null);
			if (path!=null && path.indexOf(".")==-1 && !((new File(path)).exists())) {
				// Is 'path' a macro variable?
				if (path.startsWith("&")) path=path.substring(1);
				Interpreter interp = Interpreter.getInstance();
				String path2 = interp!=null?interp.getStringVariable(path):null;
				if (path2!=null) path = path2;
			}
			if (path!=null) {
				Opener o = new Opener();
				dir = o.getDir(path);
				name = o.getName(path);
				return true;
			}
		}
		return false;
	}
	
	public static String setExtension(String name, String extension) {
		if (name==null || extension==null || extension.length()==0)
			return name;
		int dotIndex = name.lastIndexOf(".");
		if (dotIndex>=0 && (name.length()-dotIndex)<=5) {
			if (dotIndex+1"+name);
		dir = fd.getDirectory();
		if (name==null)
			Macro.abort();
		fd.dispose();
		if (ij==null)
			parent.dispose();
	}
	
	private boolean noExtension(String name) {
		if (name==null) return false;
		int dotIndex = name.indexOf(".");
		return dotIndex==-1 || (name.length()-dotIndex)>5;
	}
	
	/** Returns the selected directory. */
	public String getDirectory() {
		OpenDialog.setLastDirectory(dir);
		return dir;
	}
	
	/** Returns the selected file name. */
	public String getFileName() {
		if (name!=null) {
			if (Recorder.record && dir!=null)
				Recorder.recordPath(title, dir+name);
			OpenDialog.setLastName(name);
		}
		return name;
	}
		
}