/*
 * [RenderAsIframe.java]
 *
 * Summary: Renders a string of tokens into an HTML iframe, usually representing Java source code.
 *
 * Copyright: (c) 2009-2017 Roedy Green, Canadian Mind Products, http://mindprod.com
 *
 * Licence: This software may be copied and used freely for any purpose but military.
 *          http://mindprod.com/contact/nonmil.html
 *
 * Requires: JDK 1.8+
 *
 * Created with: JetBrains IntelliJ IDEA IDE http://www.jetbrains.com/idea/
 *
 * Version History:
 *  1.7 2009-04-12 shorter style names, improved highlighting.
 */
package com.mindprod.jdisplayaux;

import com.mindprod.fastcat.FastCat;
import com.mindprod.jdisplay.Footprint;
import com.mindprod.jdisplay.Geometry;

import static java.lang.System.*;

/**
 * Renders a string of tokens into an HTML iframe, usually representing Java source code.
 * <p/>
 * Used by com.mindprod.htmlmacros.jdisplay to expand short snippets in HTML as an iframe.
 *
 * @author Roedy Green, Canadian Mind Products
 * @version 1.7 2009-04-12 shorter style names, improved highlighting.
 * @since 2007
 */
final class RenderAsIframe
    {
    /**
     * true if want extra debugging output
     */
    private static final boolean DEBUGGING = false;

    /**
     * expand a tokens to CSS-style HTML
     *
     * @param snippetName name of the  snippet.
     * @param footprint   the geometry of the snippet.
     *
     * @return the HTML to render this via an iframe.
     */
    static String expand( Footprint footprint, String snippetName )
        {
        // HTML version won't exactly match Applet version because:
        // 1. Applet uses 1.5 instead of double spacing.
        // 2. fence chars are not handled identically.
        // 3. slight diffs in style sheet vs TokenFonts.
        if ( DEBUGGING )
            {
            out.println( snippetName + " " + footprint );
            }
        final int width = footprint.actualAPPLET_WIDTH +
                          ( footprint.hasVScroll
                            ? Geometry.SCROLLED_FAT_WIDTH_PX
                            : Geometry.UNSCROLLED_FAT_WIDTH_PX );
        final int height =
                footprint.actualAPPLET_HEIGHT + ( footprint.hasHScroll
                                                  ? Geometry.SCROLLED_FAT_HEIGHT_PX
                                                  : Geometry.UNSCROLLED_FAT_HEIGHT_PX );
        final boolean scrolling =
                ( footprint.hasHScroll || footprint.hasVScroll );
        // If box is too big, frame will shrink leaving space below.
        // with auto, if box is too small, will grow scroll bars.
        // Put iframe in a &lt;div sandwich since class on the inline
        // is ignored.
        final FastCat sb = new FastCat( 13 );
        sb.append( "<iframe class=\"jdisplay\" src=\"snippet/iframe/", snippetName, ".htm", "\"" );
        sb.append( " width=\"", width, "\"" );
        sb.append( " height=\"", height, "\"" );
        if ( scrolling )
            {
            sb.append( " style=\"overflow:scroll\"" );
            }
        sb.append( "></iframe>" );
        return sb.toString();
        }
    }