function update()

in src/content/images_www/v6/download/7.4/js/download.js [457:640]
141 lines of code
40 McCabe index (conditional complexity)

function update() {
    var langselect = document.getElementById("language_select");
    if(langselect.options[langselect.selectedIndex].value == MORE_LANG_ID) {
        langselect.selectedIndex = last_selected_lang;
        window.location = get_build_info(true).ADDITIONAL_BUILD_LOCATION;
    }
    last_selected_lang = langselect.selectedIndex;

    lang_id = langselect.options[langselect.selectedIndex].value;

    var select = document.getElementById("platform_select");
    var platform = select.options[select.selectedIndex].value;
    var platform_display_name = select.options[select.selectedIndex].text;


    /*For NetBeans we have native mac installer*/
    
    if(platform=="macosx") {
	platform = "macosx-x86";
    }

    // update the "checks" and generate error messages, if any
    var product_messages = new Array();
    for (var i = 0; i < product_uids.length; i++) {
        if (is_product_hidden(product_uids[i])) {
            continue;
        }
        
        // enter the default value
        product_messages[i] = null;
        
        if (!is_compatible(i, platform)) {
	     product_messages[i] = product_display_names[i];
        }
		
        for(var k=0;k<BUNDLE_IDS.length;k++) {
                var id = BUNDLE_IDS[k];

                if(is_product_in_bundle(product_uids[i], BUNDLE_IDS[k])) {
                    if (product_messages[i] == null) {
                        document.getElementById("product_" + i + "_" + id).innerHTML = IMAGE_CHECKED_WHITE;
                    } else {
                        document.getElementById("product_" + i + "_" + id).innerHTML = IMAGE_WARNING_WHITE;
                    }
                } else {
                    document.getElementById("product_" + i + "_" + id).innerHTML = '';
                }
	}	


	if (product_messages[i] == null) {
		document.getElementById("product_" + i + "_display_name").innerHTML = '<a class="product_display_name">' + product_display_names[i] + "</a>";
	} else {
		document.getElementById("product_" + i + "_display_name").innerHTML = '<a class="product_display_name_no">' + product_display_names[i] + "</a>";
	}
    }
    
    // update the error message
    var error_message = "";
    var messages_number = 0;
    
    for (var i = 0; i < product_uids.length; i++) {
        if (product_messages[i] != null) {
        messages_number += 1;
        }
    }
    if (messages_number != 0 ) {
	
	var messages_counter = 0;	
	
	error_message += NOTE_PREFIX;
	
    	for (var j = 0; j < product_uids.length; j++) {
        	if (product_messages[j] != null) {
			
			if ( messages_counter == 0) {
            			error_message += product_messages[j];
			} else if (messages_counter == (messages_number-1) ){
				error_message = NOTE_AND_SEP.replace('{0}', error_message).replace('{1}', product_messages[j]);
			} else {
				error_message = NOTE_COMMA_SEP.replace('{0}', error_message).replace('{1}', product_messages[j]);
			}
			
			messages_counter += 1;			
        	}
    	}
	var na = '';
	if (messages_number == 1 ) {
		if ( platform == "zip" ) {
			na = SINGLE_NOT_AVAILABLE_ZIP;
		} else {
			na = SINGLE_NOT_AVAILABLE_BUNDLE;
		}		
        } else {
		if ( platform == "zip" ) {
			na = MULTIPLE_NOT_AVAILABLE_ZIP;
		} else {
			na = MULTIPLE_NOT_AVAILABLE_BUNDLE;
		}
	}
	error_message = na.replace('{0}', error_message).replace('{1}', platform_display_name);;	
    } else {
	error_message = '<br>';
    }

    // use positive wording instead of negative
    
    if ( platform == "zip" ) {
        error_message = NOTE_ZIP;    
    } else if(platform.indexOf("macosx")!=-1) {
	//error_message = NOTE_MACOSX;
    } else if(platform.indexOf("solaris")!=-1) {
	error_message = NOTE_SOLARIS;
    } 

    if (error_message != "" ) {
       error_message = NOTE_ALL;
    }
    

    document.getElementById("error_message").innerHTML = error_message;
    
    // update the sizes  
    var sizes = new Array(BUNDLE_IDS.length); 
    for(var i=0;i<BUNDLE_IDS.length;i++) {
      sizes[i] = 0;
    }

    for (var i = 0; i < product_uids.length; i++) {
        if (!is_compatible(i, platform)) {
            continue;
        }

        for(var k=0;k<BUNDLE_IDS.length;k++) {
	    if (is_product_in_bundle(product_uids[i], BUNDLE_IDS[k])) {
                sizes[k] += new Number(product_download_sizes[i]);
            }
             
        }       
    }

    for(var k=0;k<sizes.length;k++) {
        sizes[k]   = Math.ceil(sizes[k] / 1024.0);
    }
    
    if(platform.indexOf("macosx")!=-1) {
	platform = "macosx";
    }

    for(var k=0;k<sizes.length;k++) {
        sizes[k]   = get_file_size_mb(get_file_name(platform, BUNDLE_IDS[k],   lang_id), lang_id, sizes[k]);
        document.getElementById(BUNDLE_IDS[k] + "_size").innerHTML   = FREE_SIZE_MESSAGE.replace('{0}', sizes[k]);
    }
    
    for(var k=0;k<BUNDLE_IDS.length;k++) {
        var exists = false;
        var id = BUNDLE_IDS[k];
 
        for(var j=0;j<BUNDLES.length;j++) { 
            if(id == BUNDLES[j].uid) {
               exists = true;
            }
        }  
        exists = exists && is_file_available(platform, id, lang_id);
        document.getElementById(id + "_link").innerHTML   = get_download_button(id, exists);
    }

    document.getElementById("jdk_note").innerHTML = JDK_NOTE_ALL.replace('{0}',JAVA_COM_LINK).replace('{1}',JDK_DOWNLOAD_LINK).replace('{2}',NBJDK_DOWNLOAD_LINK);

    var mainLanguage = isMainLanguage(lang_id);
    var comunityBuild = (isCommunityBuild() && mainLanguage) || (!isCommunityBuild() && !mainLanguage);
    
    if (comunityBuild == 1) {
	document.getElementById("community_number").innerHTML  = "<a class=\"special_message_number\">" + NETBEANS_DOWNLOAD_BUNDLES_COMMUNITY_MSG_NUMBER + "</a>";
	document.getElementById("community_message").innerHTML = "<a class=\"special_message_text\">" + COMMUNITY_MESSAGE + "</a>";
	document.getElementById("download_page_header").innerHTML = getHeader(true);
    }
    else {
	document.getElementById("community_message").innerHTML = "";
	document.getElementById("community_number").innerHTML  = "";
	document.getElementById("download_page_header").innerHTML = getHeader(false);
    }
    document.getElementById("zip_link").setAttribute("href", getZipUrl());
}