package com.touchgraph.wikibrowser;

import java.awt.*;
import java.applet.AppletContext;
import java.awt.event.*;
import java.io.File;
import java.net.*;

import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.html.HTMLEditorKit;

class TGWikiPanel extends TGWikiBrowser {

    AppletContext appletContext;

    /* This is a hack for opening selected Nodes in the browser.
       It should better be solved with event notification ... */
    TGWikiPanel(AppletContext ac){
	appletContext = ac;
    }

    protected void buildPanel() {
        final JScrollBar horizontalSB = hvScroll.getHorizontalSB();
        final JScrollBar verticalSB = hvScroll.getVerticalSB();
        final JScrollBar zoomSB = zoomScroll.getZoomSB();

        setLayout(new BorderLayout());
        ToolTipManager.sharedInstance().setInitialDelay(0);

	// the graph part
        JPanel scrollPanel = new JPanel(new BorderLayout());

	final JToolBar topPanel = new JToolBar("TGWikibrowser controls");

        maxAddCombo = new JComboBox(new String[] {"25","30","35","40","50","60","100","200"});
        maxExpandCombo = new JComboBox(new String[] {"10","15","20","25","30","40","50","70","100"});
        localityRadiusCombo = new JComboBox(new String[] {"0","1","2","3","4","5","6"});

        maxAddCombo.setSelectedIndex(3);
        maxExpandCombo.setSelectedIndex(3);
        localityRadiusCombo.setSelectedIndex(2);

        maxAddCombo.setToolTipText("Don't show nodes with more E# of edges");
        maxExpandCombo.setToolTipText("Don't expand nodes with more then E# of edges");
        localityRadiusCombo.setToolTipText("Show nodes reachable by following Radius# edges");

        showBackLinksCheckBox = new JCheckBox("BackLinks",false);
        showBackLinksCheckBox.setHorizontalTextPosition(SwingConstants.LEFT);

	//todo: dynamically replace "the selected one" with the current selections name ...
        showBackLinksCheckBox.setToolTipText("Show topics referring to the selected one");
        ActionListener setLocaleAL = new ActionListener()  {
            public void actionPerformed(ActionEvent e) {
                setLocale(tgPanel.getSelect());
            }
        };

        maxAddCombo.addActionListener(setLocaleAL);
        maxExpandCombo.addActionListener(setLocaleAL);
        localityRadiusCombo.addActionListener(setLocaleAL);
        showBackLinksCheckBox.addActionListener(setLocaleAL);

	maxAddCombo.setPreferredSize(new Dimension(50,20));
	maxExpandCombo.setPreferredSize(new Dimension(50,20));
	localityRadiusCombo.setPreferredSize(new Dimension(50,20));

	JLabel maxAddComboLabel = new JLabel("Show E#",Label.RIGHT);
	maxAddComboLabel.setLabelFor(maxAddCombo);
        topPanel.add(maxAddComboLabel);
        topPanel.add(maxAddCombo);

	JLabel maxExpandComboLabel = new JLabel("Expand E#",Label.RIGHT);
	maxExpandComboLabel.setLabelFor(maxExpandCombo);
	topPanel.add(maxExpandComboLabel);
        topPanel.add(maxExpandCombo);

	JLabel localityRadiusComboLabel =  new JLabel("Radius",Label.RIGHT);
	localityRadiusComboLabel.setLabelFor(localityRadiusCombo);
	topPanel.add(localityRadiusComboLabel);
        topPanel.add(localityRadiusCombo);

        topPanel.add(showBackLinksCheckBox);

	JLabel zoomSBLabel = new JLabel("Zoom",Label.RIGHT);
        zoomSBLabel.setLabelFor(zoomSB);
	topPanel.add(zoomSBLabel);
        topPanel.add(zoomSB);

	JButton stopButton;
	URL stopIcon = this.getClass().getResource("/images/kill.png");
	if (stopIcon != null) {
	    System.out.println("Stop icon: " + stopIcon);
	    stopButton = new JButton(new ImageIcon(stopIcon));
	} else {
	    stopButton = new JButton("Stop!");
	    stopButton.setBackground(Color.decode("#D8C0C0"));
	}

        stopButton.setToolTipText("Stop graph motion, click twice to stop all motion");
        stopButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                tgPanel.stopMotion();
                tgPanel.fastFinishAnimation();
            }
        });
        topPanel.add(stopButton);

        add(topPanel, BorderLayout.NORTH);

	scrollPanel.add(tgPanel, BorderLayout.CENTER);
        scrollPanel.add(verticalSB, BorderLayout.EAST);
        scrollPanel.add(horizontalSB,BorderLayout.SOUTH);
        add(scrollPanel, BorderLayout.CENTER);

	// statusButton.setText() is called all the time in WikiNavigateUI
        // this hack avoids NullPointerExceptions ...
        statusButton = new JButton();

        wikiPopup = new JPopupMenu();
        JMenuItem menuItem = new JMenuItem("Toggle Controls");
        ActionListener toggleControlsAction = new ActionListener() {
                boolean controlsVisible = true;
                public void actionPerformed(ActionEvent e) {
                    controlsVisible = !controlsVisible;
                    horizontalSB.setVisible(controlsVisible);
                    verticalSB.setVisible(controlsVisible);
                    topPanel.setVisible(controlsVisible);
                }
            };
        menuItem.addActionListener(toggleControlsAction);
        wikiPopup.add(menuItem);
    }

    /* we abuse this callback to open the selected topic in the browser */
    public void setWikiTextPane(String url) {
        textPaneURL = url;
	System.out.println("Opening " +  textPaneURL);
	if (appletContext != null) {
	    try {
		appletContext.showDocument(new URL(textPaneURL), "wiki");
	    } catch (MalformedURLException mue) {
		System.err.println(mue);
		//mue.printStackTrace();
	    }
	}
    }
}