package ij.plugin;
import ij.*;
import ij.gui.*;
import ij.util.*;
import ij.measure.ResultsTable;
import java.awt.*;
import java.io.*;
import java.util.*;

/** Implements the Plugins/Hotkeys/Create Shortcut and Remove commands. */
public class Hotkeys implements PlugIn {

	private static final String TITLE = "Hotkeys";
	private static String command = "";
	private static String shortcut = "";

	public void run(String arg) {
		if (arg.equals("install") || arg.equals("install2"))
			installHotkey(arg);
		else if (arg.equals("remove"))
			removeHotkey();
		else if (arg.equals("list"))
			listCommands();
		else {
			Executer e = new Executer(arg);
			e.run();
		}
		IJ.register(Hotkeys.class);
	}

	void installHotkey(String arg) {
		boolean byName = arg.equals("install2");
		String[] commands = byName?null:getAllCommands();
		String[] shortcuts = getAvailableShortcuts();
		String nCommands = commands!=null?" ("+commands.length+")":"";
		GenericDialog gd = new GenericDialog("Add Shortcut"+nCommands);
		gd.addChoice("Shortcut:", shortcuts, shortcuts[0]);
		if (byName)
			gd.addStringField("Command:", "", 20);
		else
			gd.addChoice("Command:", commands, command);
		gd.showDialog();
		if (gd.wasCanceled())
			return;
		shortcut = gd.getNextChoice();
		if (byName) {
			command = gd.getNextString();
			Hashtable cmds = Menus.getCommands();
			if (cmds==null || cmds.get(command)==null) {
				String command2 = command;
				if (cmds.get(command)==null)
					command = command+" ";
				if (cmds.get(command)==null) {
					command = command2 + "...";
					if (cmds.get(command)==null) {
						command = command2;
						IJ.error("Command not found:\n \n   "+ "\""+command+"\"");
						return;
					}
				}
			}
		} else {
			command = gd.getNextChoice();
			Hashtable cmds = Menus.getCommands();
			if (command.contains("[") && cmds!=null && cmds.get(command)==null) {
				if (cmds.get(command+"]")!=null)
					command += "]";
			}
		}
		String plugin = "ij.plugin.Hotkeys("+"\""+command+"\")";
		int err = Menus.installPlugin(plugin,Menus.SHORTCUTS_MENU,"*"+command,shortcut,IJ.getInstance());
		switch (err) {
			case Menus.COMMAND_IN_USE:
				IJ.showMessage(TITLE, "The command \"" + command + "\" is already installed.");
				break;
			case Menus.INVALID_SHORTCUT:
				IJ.showMessage(TITLE, "The shortcut must be a single character or F1-F24.");
				break;
			case Menus.SHORTCUT_IN_USE:
				IJ.showMessage("The \""+shortcut+"\" shortcut is in use.");
				break;
			default:
				shortcut = "";
				break;
		}
	}
	
	void removeHotkey() {
		String[] shortcuts = getShortcuts();
		if (shortcuts==null) {
			IJ.showMessage("Remove...", "No shortcuts found.");
			return;
		}
		GenericDialog gd = new GenericDialog("Remove");
		gd.addChoice("Shortcut:", shortcuts, "");
		if (shortcuts.length>1)
			gd.addCheckbox("Remove all "+shortcuts.length+" shortcuts", false);
		gd.addMessage("Shortcuts are not removed\nuntil ImageJ is restarted.");
		gd.showDialog();
		if (gd.wasCanceled())
			return;
		command = gd.getNextChoice();
		boolean removeAll = false;
		if (shortcuts.length>1)
			removeAll = gd.getNextBoolean();
		if (removeAll) {
			boolean ok = IJ.showMessageWithCancel("Remove", "Remove all "+shortcuts.length+" shortcuts?");
			if (!ok)
				return;
			command = "";
		} else {
			shortcuts = new String[1];
			shortcuts[0] = command;
		}
		int count = 0;
		for (int i=0; i1?"s":"")+" removed; ImageJ restart required");
	}
	
	private void listCommands() {
		String[] commands = getAllCommands();
		Hashtable classes = Menus.getCommands();
		ResultsTable rt = new ResultsTable();
		for (int i=0; i