/*
 * Created on Feb 26, 2005
 *
 */
package net.atlanticbb.tantlinger.ui.text.actions;

import java.awt.event.ActionEvent;

import javax.swing.Action;
import javax.swing.JEditorPane;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;

import org.bushe.swing.action.ShouldBeEnabledDelegate;

import net.atlanticbb.tantlinger.i18n.I18n;
import net.atlanticbb.tantlinger.ui.DefaultAction;


/**
 * @author Bob Tantlinger
 *
 */
public abstract class HTMLTextEditAction extends DefaultAction
{
    static final I18n i18n = I18n.getInstance("net.atlanticbb.tantlinger.ui.text.actions");
    
    public static final String EDITOR = "editor";
    
    public static final int DISABLED = -1;
    public static final int WYSIWYG = 0;
    public static final int SOURCE = 1;
    
    public HTMLTextEditAction(String name)
    {
        super(name);
        addShouldBeEnabledDelegate(new ShouldBeEnabledDelegate()
        {
            public boolean shouldBeEnabled(Action a)
            {                          
                return getEditMode() != DISABLED;
            }
        });
        updateEnabledState();
    }   
    
    /* (non-Javadoc)
     * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
     */
    public void execute(ActionEvent e) throws Exception
    {      
       if(getEditMode() == WYSIWYG)           
           wysiwygEditPerformed(e, getCurrentEditor());
       else if(getEditMode() == SOURCE)
           sourceEditPerformed(e, getCurrentEditor());            
    }
    
    public int getEditMode()
    {        
        JEditorPane ep = getCurrentEditor();
        if(ep == null)
            return DISABLED;
        if(ep.getDocument() instanceof HTMLDocument && ep.getEditorKit() instanceof HTMLEditorKit)           
            return WYSIWYG;
        return SOURCE;        
    }
    
    protected JEditorPane getCurrentEditor()
    {
        try
        {
            JEditorPane ep = (JEditorPane)getContextValue(EDITOR);
            return ep;
        }
        catch(ClassCastException cce)
        {
            //cce.printStackTrace();
        }
        
        return null;
    }
    
    protected void actionPerformedCatch(Throwable t)
    {        
        t.printStackTrace();
    }
    
    protected void contextChanged()
    {
        if(getEditMode() == WYSIWYG)
            updateWysiwygContextState(getCurrentEditor());
        else if(getEditMode() == SOURCE)
            updateSourceContextState(getCurrentEditor());
    }
    
    protected void updateWysiwygContextState(JEditorPane wysEditor)
    {
        
    }
    
    protected void updateSourceContextState(JEditorPane srcEditor)
    {
        
    }
    
    protected abstract void wysiwygEditPerformed(ActionEvent e, JEditorPane editor);
        
    protected abstract void sourceEditPerformed(ActionEvent e, JEditorPane editor);
       
}