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| <H2> | |
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| org.apache.click</FONT> | |
| <BR> | |
| Interface PageInterceptor</H2> | |
| <HR> | |
| <DL> | |
| <DT><PRE>public interface <B>PageInterceptor</B></DL> | |
| </PRE> | |
| <P> | |
| Provides a Page life cycle interceptor. Classes implementing this interface | |
| can be used to listen for key page life cycle events and abort further page | |
| processing if required. | |
| <p/> | |
| PageInterceptors can be used for many different purposes including: | |
| <ul> | |
| <li>enforcing application wide page security policies</li> | |
| <li>injecting dependencies into page objects</li> | |
| <li>logging and profiling page performance</li> | |
| </ul> | |
| A Click application can define multiple page interceptors that are invoked in | |
| the order in which they are returned by the <tt>ConfigService</tt>. | |
| <h3><a name="scope"></a>Scope</h3> | |
| Page interceptors can be defined with a request level scope, whereby a new | |
| page interceptor will be created with each page request providing a thread | |
| safe programming model. | |
| <p/> | |
| Please note, as new interceptor instances are created with each request, care | |
| should be taken to ensure that these objects are light weight and do not | |
| introduce a performance bottleneck into your application. | |
| <p/> | |
| Alternatively, page interceptors can be defined with application level scope | |
| whereby a single instance is created for the application and is used for | |
| all requests. | |
| <p/> | |
| Note application scope interceptors are more efficient that request scope | |
| interceptors, but you are responsible for ensuring that they are thread safe | |
| and support reentrant method invocations as multiple page requests are | |
| processed at the same time. | |
| <h3><a name="configuration"></a>Configuration</h3> | |
| Application PageInterceptors are configured in the <tt>click.xml</tt> | |
| configuration file. PageInterceptors must support construction using a | |
| no-args public constructor. | |
| <p/> | |
| Page interceptors can have multiple properties configured with their XML | |
| definition which are set after the constructor has been called. Properties | |
| are set using OGNL via <A HREF="../../../org/apache/click/util/PropertyUtils.html" title="class in org.apache.click.util"><CODE>PropertyUtils</CODE></A>. | |
| <p/> | |
| An example configuration is provided below: | |
| <pre class="prettyprint"> | |
| <page-interceptor classname="com.mycorp.PageSecurityInterceptor" scope="application"> | |
| <property name="notAuthenticatedPath" value="/not-authenticated.htm"/> | |
| <property name="notAuthorizedPath" value="/not-authorized.htm"/> | |
| </page-interceptor> </pre> | |
| The default scope for page interceptors is "request", but this can be configured | |
| as "application" as is done in the example configuration above. | |
| <h3><a name="example"></a>Example</h3> | |
| <pre class="prettyprint"> | |
| public class SecurityInterceptor implements PageInterceptor { | |
| // The request not authenticated redirect path. | |
| private String notAuthenticatedPath; | |
| // The request not authorized redirect path. | |
| private String notAuthorizedPath; | |
| // Public Methods --------------------------------------------------------- | |
| public boolean preCreate(Class<? extends Page> pageClass, Context context) { | |
| // If authentication required, then ensure user is authenticated | |
| Authentication authentication = pageClass.getAnnotation(Authentication.class); | |
| // TODO: user context check. | |
| if (authentication != null && authentication.required()) { | |
| sendRedirect(getNotAuthenticatedPath(), context); | |
| return false; | |
| } | |
| // If authorization permission defined, then ensure user is authorized to access the page | |
| Authorization authorization = pageClass.getAnnotation(Authorization.class); | |
| if (authorization != null) { | |
| if (!UserContext.getThreadUserContext().hasPermission(authorization.permission())) { | |
| sendRedirect(getNotAuthorizedPath(), context); | |
| return false; | |
| } | |
| } | |
| return true; | |
| } | |
| public boolean postCreate(Page page) { | |
| return true; | |
| } | |
| public boolean preResponse(Page page) { | |
| return true; | |
| } | |
| public void postDestroy(Page page) { | |
| } | |
| public String getNotAuthenticatedPath() { | |
| return notAuthenticatedPath; | |
| } | |
| public void setNotAuthenticatedPath(String notAuthenticatedPath) { | |
| this.notAuthenticatedPath = notAuthenticatedPath; | |
| } | |
| public String getNotAuthorizedPath() { | |
| return notAuthorizedPath; | |
| } | |
| public void setNotAuthorizedPath(String notAuthorizedPath) { | |
| this.notAuthorizedPath = notAuthorizedPath; | |
| } | |
| // Protected Methods ------------------------------------------------------ | |
| protected void sendRedirect(String location, Context context) { | |
| if (StringUtils.isNotBlank(location)) { | |
| if (location.charAt(0) == '/') { | |
| String contextPath = context.getRequest().getContextPath(); | |
| // Guard against adding duplicate context path | |
| if (!location.startsWith(contextPath + '/')) { | |
| location = contextPath + location; | |
| } | |
| } | |
| } | |
| location = context.getResponse().encodeRedirectURL(location); | |
| try { | |
| context.getResponse().sendRedirect(location); | |
| } catch (IOException ioe) { | |
| throw new RuntimeException(ioe); | |
| } | |
| } | |
| } </pre> | |
| <pre class="prettyprint"> | |
| // Page class authentication annotation | |
| @Retention(RetentionPolicy.RUNTIME) | |
| public @interface Authentication { | |
| boolean required() default true; | |
| } </pre> | |
| <pre class="prettyprint"> | |
| // Page class authorization annotation | |
| @Retention(RetentionPolicy.RUNTIME) | |
| public @interface Authorization { | |
| String permission(); | |
| } | |
| </pre> | |
| <P> | |
| <P> | |
| <HR> | |
| <P> | |
| <!-- ========== METHOD SUMMARY =========== --> | |
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| <B>Method Summary</B></FONT></TH> | |
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| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> | |
| <CODE> boolean</CODE></FONT></TD> | |
| <TD><CODE><B><A HREF="../../../org/apache/click/PageInterceptor.html#postCreate(org.apache.click.Page)">postCreate</A></B>(<A HREF="../../../org/apache/click/Page.html" title="class in org.apache.click">Page</A> page)</CODE> | |
| <BR> | |
| Provides a post page object creation interceptor method, which is passed | |
| the instance of the newly created page.</TD> | |
| </TR> | |
| <TR BGCOLOR="white" CLASS="TableRowColor"> | |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> | |
| <CODE> void</CODE></FONT></TD> | |
| <TD><CODE><B><A HREF="../../../org/apache/click/PageInterceptor.html#postDestroy(org.apache.click.Page)">postDestroy</A></B>(<A HREF="../../../org/apache/click/Page.html" title="class in org.apache.click">Page</A> page)</CODE> | |
| <BR> | |
| Provides a post page destroy interceptor method.</TD> | |
| </TR> | |
| <TR BGCOLOR="white" CLASS="TableRowColor"> | |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> | |
| <CODE> boolean</CODE></FONT></TD> | |
| <TD><CODE><B><A HREF="../../../org/apache/click/PageInterceptor.html#preCreate(java.lang.Class, org.apache.click.Context)">preCreate</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Class.html" title="class or interface in java.lang">Class</A><? extends <A HREF="../../../org/apache/click/Page.html" title="class in org.apache.click">Page</A>> pageClass, | |
| <A HREF="../../../org/apache/click/Context.html" title="class in org.apache.click">Context</A> context)</CODE> | |
| <BR> | |
| Provides a before page object creation interceptor method, which is passed | |
| the class of the page to be instantiated and the page request context.</TD> | |
| </TR> | |
| <TR BGCOLOR="white" CLASS="TableRowColor"> | |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> | |
| <CODE> boolean</CODE></FONT></TD> | |
| <TD><CODE><B><A HREF="../../../org/apache/click/PageInterceptor.html#preResponse(org.apache.click.Page)">preResponse</A></B>(<A HREF="../../../org/apache/click/Page.html" title="class in org.apache.click">Page</A> page)</CODE> | |
| <BR> | |
| Provides a page interceptor before response method.</TD> | |
| </TR> | |
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| | |
| <P> | |
| <!-- ============ METHOD DETAIL ========== --> | |
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| <A NAME="preCreate(java.lang.Class, org.apache.click.Context)"><!-- --></A><H3> | |
| preCreate</H3> | |
| <PRE> | |
| boolean <B>preCreate</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Class.html" title="class or interface in java.lang">Class</A><? extends <A HREF="../../../org/apache/click/Page.html" title="class in org.apache.click">Page</A>> pageClass, | |
| <A HREF="../../../org/apache/click/Context.html" title="class in org.apache.click">Context</A> context)</PRE> | |
| <DL> | |
| <DD>Provides a before page object creation interceptor method, which is passed | |
| the class of the page to be instantiated and the page request context. | |
| If this method returns true then the normal page processing is performed, | |
| otherwise if this method returns false the page instance is never created | |
| and the request is considered to have been handled. | |
| <P> | |
| <DD><DL> | |
| <DT><B>Parameters:</B><DD><CODE>pageClass</CODE> - the class of the page to be instantiated<DD><CODE>context</CODE> - the page request context | |
| <DT><B>Returns:</B><DD>true to continue normal page processing or false whereby the | |
| request is considered to be handled</DL> | |
| </DD> | |
| </DL> | |
| <HR> | |
| <A NAME="postCreate(org.apache.click.Page)"><!-- --></A><H3> | |
| postCreate</H3> | |
| <PRE> | |
| boolean <B>postCreate</B>(<A HREF="../../../org/apache/click/Page.html" title="class in org.apache.click">Page</A> page)</PRE> | |
| <DL> | |
| <DD>Provides a post page object creation interceptor method, which is passed | |
| the instance of the newly created page. This interceptor method is called | |
| before the page <A HREF="../../../org/apache/click/Page.html#onSecurityCheck()"><CODE>Page.onSecurityCheck()</CODE></A> method is invoked. | |
| <p/> | |
| If this method returns true then the normal page processing is performed, | |
| otherwise if this method returns false the request is considered to have | |
| been handled. | |
| <p/> | |
| Please note the page <A HREF="../../../org/apache/click/Page.html#onDestroy()"><CODE>Page.onDestroy()</CODE></A> method will still be invoked. | |
| <P> | |
| <DD><DL> | |
| <DT><B>Parameters:</B><DD><CODE>page</CODE> - the newly instantiated page instance | |
| <DT><B>Returns:</B><DD>true to continue normal page processing or false whereby the | |
| request is considered to be handled</DL> | |
| </DD> | |
| </DL> | |
| <HR> | |
| <A NAME="preResponse(org.apache.click.Page)"><!-- --></A><H3> | |
| preResponse</H3> | |
| <PRE> | |
| boolean <B>preResponse</B>(<A HREF="../../../org/apache/click/Page.html" title="class in org.apache.click">Page</A> page)</PRE> | |
| <DL> | |
| <DD>Provides a page interceptor before response method. This method is invoked | |
| prior to the page redirect, forward or rendering phase. | |
| <p/> | |
| If this method returns true then the normal page processing is performed, | |
| otherwise if this method returns false request is considered to have been | |
| handled. | |
| <p/> | |
| Please note the page <A HREF="../../../org/apache/click/Page.html#onDestroy()"><CODE>Page.onDestroy()</CODE></A> method will still be invoked. | |
| <P> | |
| <DD><DL> | |
| <DT><B>Parameters:</B><DD><CODE>page</CODE> - the newly instantiated page instance | |
| <DT><B>Returns:</B><DD>true to continue normal page processing or false whereby the | |
| request is considered to be handled</DL> | |
| </DD> | |
| </DL> | |
| <HR> | |
| <A NAME="postDestroy(org.apache.click.Page)"><!-- --></A><H3> | |
| postDestroy</H3> | |
| <PRE> | |
| void <B>postDestroy</B>(<A HREF="../../../org/apache/click/Page.html" title="class in org.apache.click">Page</A> page)</PRE> | |
| <DL> | |
| <DD>Provides a post page destroy interceptor method. This interceptor method | |
| is called immediately after the page <A HREF="../../../org/apache/click/Page.html#onDestroy()"><CODE>Page.onDestroy()</CODE></A> method is | |
| invoked. | |
| <P> | |
| <DD><DL> | |
| <DT><B>Parameters:</B><DD><CODE>page</CODE> - the page object which has just been destroyed</DL> | |
| </DD> | |
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preceders=['!','!=','!==','#','%','%=','&','&&','&&=','&=','(','*','*=','+=',',','-=','->','/','/=',':','::',';','<','<<','<<=','<=','=','==','===','>','>=','>>','>>=','>>>','>>>=','?','@','[','^','^=','^^','^^=','{','|','|=','||','||=','~','break','case','continue','delete','do','else','finally','instanceof','return','throw','try','typeof'];var pattern='(?:'+'(?:(?:^|[^0-9\.])\\.{1,3})|'+'(?:(?:^|[^\\+])\\+)|'+'(?:(?:^|[^\\-])-)';for(var i=0;i<preceders.length;++i){var preceder=preceders[i];if(PR_isWordChar(preceder.charAt(0))){pattern+='|\\b'+preceder;}else{pattern+='|'+preceder.replace(/([^=<>:&])/g,'\\$1');}}pattern+='|^)\\s*$';return new RegExp(pattern);})();var pr_amp=/&/g;var pr_lt=/</g;var pr_gt=/>/g;var pr_quot=/"/g;function PR_attribToHtml(str){return str.replace(pr_amp,'&').replace(pr_lt,'<').replace(pr_gt,'>').replace(pr_quot,'"');}function PR_textToHtml(str){return str.replace(pr_amp,'&').replace(pr_lt,'<').replace(pr_gt,'>');}var pr_ltEnt=/</g;var pr_gtEnt=/>/g;var pr_aposEnt=/'/g;var pr_quotEnt=/"/g;var pr_ampEnt=/&/g;function PR_htmlToText(html){var pos=html.indexOf('&');if(pos<0){return html;}for(--pos;(pos=html.indexOf('&#',pos+1))>=0;){var end=html.indexOf(';',pos);if(end>=0){var num=html.substring(pos+3,end);var radix=10;if(num&&num.charAt(0)=='x'){num=num.substring(1);radix=16;}var codePoint=parseInt(num,radix);if(!isNaN(codePoint)){html=(html.substring(0,pos)+String.fromCharCode(codePoint)+html.substring(end+1));}}}return html.replace(pr_ltEnt,'<').replace(pr_gtEnt,'>').replace(pr_aposEnt,"'").replace(pr_quotEnt,'"').replace(pr_ampEnt,'&');}function PR_isRawContent(node){return'XMP'==node.tagName;}var PR_innerHtmlWorks=null;function PR_getInnerHtml(node){if(null===PR_innerHtmlWorks){var testNode=document.createElement('PRE');testNode.appendChild(document.createTextNode('<!DOCTYPE foo PUBLIC "foo bar">\n<foo />'));PR_innerHtmlWorks=!/</.test(testNode.innerHTML);}if(PR_innerHtmlWorks){var content=node.innerHTML;if(PR_isRawContent(node)){content=PR_textToHtml(content);}return content;}var out=[];for(var child=node.firstChild;child;child=child.nextSibling){PR_normalizedHtml(child,out);}return out.join('');}function PR_normalizedHtml(node,out){switch(node.nodeType){case 1:var name=node.tagName.toLowerCase();out.push('\074',name);for(var i=0;i<node.attributes.length;++i){var attr=node.attributes[i];if(!attr.specified){continue;}out.push(' ');PR_normalizedHtml(attr,out);}out.push('>');for(var child=node.firstChild;child;child=child.nextSibling){PR_normalizedHtml(child,out);}if(node.firstChild||!/^(?:br|link|img)$/.test(name)){out.push('<\/',name,'>');}break;case 2:out.push(node.name.toLowerCase(),'="',PR_attribToHtml(node.value),'"');break;case 3:case 4:out.push(PR_textToHtml(node.nodeValue));break;}}function PR_tabExpander(tabWidth){var SPACES=' ';var charInLine=0;return function(plainText){var out=null;var pos=0;for(var i=0,n=plainText.length;i<n;++i){var ch=plainText.charAt(i);switch(ch){case'\t':if(!out){out=[];}out.push(plainText.substring(pos,i));var nSpaces=tabWidth-(charInLine%tabWidth);charInLine+=nSpaces;for(;nSpaces>=0;nSpaces-=SPACES.length){out.push(SPACES.substring(0,nSpaces));}pos=i+1;break;case'\n':charInLine=0;break;default:++charInLine;}}if(!out){return plainText;}out.push(plainText.substring(pos));return out.join('');};}var pr_chunkPattern=/(?:[^<]+|<!--[\s\S]*?-->|<!\[CDATA\[([\s\S]*?)\]\]>|<\/?[a-zA-Z][^>]*>|<)/g;var pr_commentPrefix=/^<!--/;var pr_cdataPrefix=/^<\[CDATA\[/;var pr_brPrefix=/^<br\b/i;function PR_extractTags(s){var matches=s.match(pr_chunkPattern);var sourceBuf=[];var sourceBufLen=0;var extractedTags=[];if(matches){for(var i=0,n=matches.length;i<n;++i){var match=matches[i];if(match.length>1&&match.charAt(0)==='<'){if(pr_commentPrefix.test(match)){continue;}if(pr_cdataPrefix.test(match)){sourceBuf.push(match.substring(9,match.length-3));sourceBufLen+=match.length-12;}else if(pr_brPrefix.test(match)){sourceBuf.push('\n');sourceBufLen+=1;}else{extractedTags.push(sourceBufLen,match);}}else{var literalText=PR_htmlToText(match);sourceBuf.push(literalText);sourceBufLen+=literalText.length;}}}return{source:sourceBuf.join(''),tags:extractedTags};}function PR_createSimpleLexer(shortcutStylePatterns,fallthroughStylePatterns){var shortcuts={};(function(){var allPatterns=shortcutStylePatterns.concat(fallthroughStylePatterns);for(var i=allPatterns.length;--i>=0;){var patternParts=allPatterns[i];var shortcutChars=patternParts[3];if(shortcutChars){for(var c=shortcutChars.length;--c>=0;){shortcuts[shortcutChars.charAt(c)]=patternParts;}}}})();var nPatterns=fallthroughStylePatterns.length;return function(sourceCode,opt_basePos){opt_basePos=opt_basePos||0;var decorations=[opt_basePos,PR_PLAIN];var lastToken='';var pos=0;var tail=sourceCode;while(tail.length){var style;var token=null;var patternParts=shortcuts[tail.charAt(0)];if(patternParts){var match=tail.match(patternParts[1]);token=match[0];style=patternParts[0];}else{for(var i=0;i<nPatterns;++i){patternParts=fallthroughStylePatterns[i];var contextPattern=patternParts[2];if(contextPattern&&!contextPattern.test(lastToken)){continue;}var match=tail.match(patternParts[1]);if(match){token=match[0];style=patternParts[0];break;}}if(!token){style=PR_PLAIN;token=tail.substring(0,1);}}decorations.push(opt_basePos+pos,style);pos+=token.length;tail=tail.substring(token.length);if(style!==PR_COMMENT&&/\S/.test(token)){lastToken=token;}}return decorations;};}var PR_C_STYLE_STRING_AND_COMMENT_LEXER=PR_createSimpleLexer([[PR_STRING,/^\'(?:[^\\\']|\\[\s\S])*(?:\'|$)/,null,"'"],[PR_STRING,/^"(?:[^\\"]|\\[\s\S])*(?:"|$)/,null,'"'],[PR_STRING,/^\`(?:[^\\\`]|\\[\s\S])*(?:\`|$)/,null,'`']],[[PR_PLAIN,/^(?:[^\'"\`\/\#]+)/,null,' \r\n'],[PR_COMMENT,/^#[^\r\n]*/,null,'#'],[PR_COMMENT,/^\/\/[^\r\n]*/,null],[PR_STRING,/^\/(?:[^\\\*\/]|\\[\s\S])+(?:\/|$)/,REGEXP_PRECEDER_PATTERN],[PR_COMMENT,/^\/\*[\s\S]*?(?:\*\/|$)/,null]]);function PR_splitStringAndCommentTokens(sourceCode){return PR_C_STYLE_STRING_AND_COMMENT_LEXER(sourceCode);}var PR_C_STYLE_LITERAL_IDENTIFIER_PUNC_RECOGNIZER=PR_createSimpleLexer([],[[PR_PLAIN,/^\s+/,null,' \r\n'],[PR_PLAIN,/^[a-z_$@][a-z_$@0-9]*/i,null],[PR_LITERAL,/^0x[a-f0-9]+[a-z]/i,null],[PR_LITERAL,/^(?:\d(?:_\d+)*\d*(?:\.\d*)?|\.\d+)(?:e[+-]?\d+)?[a-z]*/i,null,'123456789'],[PR_PUNCTUATION,/^[^\s\w\.$@]+/,null]]);function PR_splitNonStringNonCommentTokens(source,decorations){for(var i=0;i<decorations.length;i+=2){var style=decorations[i+1];if(style===PR_PLAIN){var start=decorations[i];var end=i+2<decorations.length?decorations[i+2]:source.length;var chunk=source.substring(start,end);var subDecs=PR_C_STYLE_LITERAL_IDENTIFIER_PUNC_RECOGNIZER(chunk,start);for(var j=0,m=subDecs.length;j<m;j+=2){var subStyle=subDecs[j+1];if(subStyle===PR_PLAIN){var subStart=subDecs[j];var subEnd=j+2<m?subDecs[j+2]:chunk.length;var token=source.substring(subStart,subEnd);if(token=='.'){subDecs[j+1]=PR_PUNCTUATION;}else if(token in PR_keywords){subDecs[j+1]=PR_KEYWORD;}else if(/^@?[A-Z][A-Z$]*[a-z][A-Za-z$]*$/.test(token)){subDecs[j+1]=token.charAt(0)=='@'?PR_LITERAL:PR_TYPE;}}}PR_spliceArrayInto(subDecs,decorations,i,2);i+=subDecs.length-2;}}return decorations;}var PR_MARKUP_LEXER=PR_createSimpleLexer([],[[PR_PLAIN,/^[^<]+/,null],[PR_DECLARATION,/^<!\w[^>]*(?:>|$)/,null],[PR_COMMENT,/^<!--[\s\S]*?(?:-->|$)/,null],[PR_SOURCE,/^<\?[\s\S]*?(?:\?>|$)/,null],[PR_SOURCE,/^<%[\s\S]*?(?:%>|$)/,null],[PR_SOURCE,/^<(script|style|xmp)\b[^>]*>[\s\S]*?<\/\1\b[^>]*>/i,null],[PR_TAG,/^<\/?\w[^<>]*>/,null]]);var PR_SOURCE_CHUNK_PARTS=/^(<[^>]*>)([\s\S]*)(<\/[^>]*>)$/;function PR_tokenizeMarkup(source){var decorations=PR_MARKUP_LEXER(source);for(var i=0;i<decorations.length;i+=2){if(decorations[i+1]===PR_SOURCE){var start=decorations[i];var end=i+2<decorations.length?decorations[i+2]:source.length;var sourceChunk=source.substring(start,end);var match=(sourceChunk.match(PR_SOURCE_CHUNK_PARTS));if(match){decorations.splice(i,2,start,PR_TAG,start+match[1].length,PR_SOURCE,start+match[1].length+(match[2]||'').length,PR_TAG);}}}return decorations;}var PR_TAG_LEXER=PR_createSimpleLexer([[PR_ATTRIB_VALUE,/^\'[^\']*(?:\'|$)/,null,"'"],[PR_ATTRIB_VALUE,/^"[^"]*(?:"|$)/,null,'"'],[PR_PUNCTUATION,/^[<>\/=]+/,null,'<>/=']],[[PR_TAG,/^[\w-]+/,/^</],[PR_ATTRIB_VALUE,/^[\w-]+/,/^=/],[PR_ATTRIB_NAME,/^[\w-]+/,null],[PR_PLAIN,/^\s+/,null,' \r\n']]);function PR_splitTagAttributes(source,decorations){for(var i=0;i<decorations.length;i+=2){var style=decorations[i+1];if(style===PR_TAG){var start=decorations[i];var end=i+2<decorations.length?decorations[i+2]:source.length;var chunk=source.substring(start,end);var subDecorations=PR_TAG_LEXER(chunk,start);PR_spliceArrayInto(subDecorations,decorations,i,2);i+=subDecorations.length-2;}}return decorations;}function PR_splitSourceNodes(source,decorations){for(var i=0;i<decorations.length;i+=2){var style=decorations[i+1];if(style==PR_SOURCE){var start=decorations[i];var end=i+2<decorations.length?decorations[i+2]:source.length;var subDecorations=PR_decorateSource(source.substring(start,end));for(var j=0,m=subDecorations.length;j<m;j+=2){subDecorations[j]+=start;}PR_spliceArrayInto(subDecorations,decorations,i,2);i+=subDecorations.length-2;}}return decorations;}function PR_splitSourceAttributes(source,decorations){var nextValueIsSource=false;for(var i=0;i<decorations.length;i+=2){var style=decorations[i+1];if(style===PR_ATTRIB_NAME){var start=decorations[i];var end=i+2<decorations.length?decorations[i+2]:source.length;nextValueIsSource=/^on|^style$/i.test(source.substring(start,end));}else if(style==PR_ATTRIB_VALUE){if(nextValueIsSource){var start=decorations[i];var end=i+2<decorations.length?decorations[i+2]:source.length;var attribValue=source.substring(start,end);var attribLen=attribValue.length;var quoted=(attribLen>=2&&/^["\']/.test(attribValue)&&attribValue.charAt(0)===attribValue.charAt(attribLen-1));var attribSource;var attribSourceStart;var attribSourceEnd;if(quoted){attribSourceStart=start+1;attribSourceEnd=end-1;attribSource=attribValue;}else{attribSourceStart=start+1;attribSourceEnd=end-1;attribSource=attribValue.substring(1,attribValue.length-1);}var attribSourceDecorations=PR_decorateSource(attribSource);for(var j=0,m=attribSourceDecorations.length;j<m;j+=2){attribSourceDecorations[j]+=attribSourceStart;}if(quoted){attribSourceDecorations.push(attribSourceEnd,PR_ATTRIB_VALUE);PR_spliceArrayInto(attribSourceDecorations,decorations,i+2,0);}else{PR_spliceArrayInto(attribSourceDecorations,decorations,i,2);}}nextValueIsSource=false;}}return decorations;}function PR_decorateSource(sourceCode){var decorations=PR_splitStringAndCommentTokens(sourceCode);decorations=PR_splitNonStringNonCommentTokens(sourceCode,decorations);return decorations;}function PR_decorateMarkup(sourceCode){var decorations=PR_tokenizeMarkup(sourceCode);decorations=PR_splitTagAttributes(sourceCode,decorations);decorations=PR_splitSourceNodes(sourceCode,decorations);decorations=PR_splitSourceAttributes(sourceCode,decorations);return decorations;}function PR_recombineTagsAndDecorations(sourceText,extractedTags,decorations){var html=[];var outputIdx=0;var openDecoration=null;var currentDecoration=null;var tagPos=0;var decPos=0;var tabExpander=PR_tabExpander(PR_TAB_WIDTH);function emitTextUpTo(sourceIdx){if(sourceIdx>outputIdx){if(openDecoration&&openDecoration!==currentDecoration){html.push('</span>');openDecoration=null;}if(!openDecoration&¤tDecoration){openDecoration=currentDecoration;html.push('<span class="',openDecoration,'">');}var htmlChunk=PR_textToHtml(tabExpander(sourceText.substring(outputIdx,sourceIdx))).replace(/(\r\n?|\n| ) /g,'$1 ').replace(/\r\n?|\n/g,' <br>');html.push(htmlChunk);outputIdx=sourceIdx;}}while(true){var outputTag;if(tagPos<extractedTags.length){if(decPos<decorations.length){outputTag=extractedTags[tagPos]<=decorations[decPos];}else{outputTag=true;}}else{outputTag=false;}if(outputTag){emitTextUpTo(extractedTags[tagPos]);if(openDecoration){html.push('</span>');openDecoration=null;}html.push(extractedTags[tagPos+1]);tagPos+=2;}else if(decPos<decorations.length){emitTextUpTo(decorations[decPos]);currentDecoration=decorations[decPos+1];decPos+=2;}else{break;}}emitTextUpTo(sourceText.length);if(openDecoration){html.push('</span>');}return html.join('');}function prettyPrintOne(sourceCodeHtml){try{var sourceAndExtractedTags=PR_extractTags(sourceCodeHtml);var source=sourceAndExtractedTags.source;var extractedTags=sourceAndExtractedTags.tags;var isMarkup=/^\s*</.test(source)&&/>\s*$/.test(source);var decorations=isMarkup?PR_decorateMarkup(source):PR_decorateSource(source);return PR_recombineTagsAndDecorations(source,extractedTags,decorations);}catch(e){if('console'in window){console.log(e);console.trace();}return sourceCodeHtml;}}var PR_SHOULD_USE_CONTINUATION=true;function prettyPrint(opt_whenDone){var codeSegments=[document.getElementsByTagName('pre'),document.getElementsByTagName('code'),document.getElementsByTagName('xmp')];var elements=[];for(var i=0;i<codeSegments.length;++i){for(var j=0;j<codeSegments[i].length;++j){elements.push(codeSegments[i][j]);}}codeSegments=null;var k=0;function doWork(){var endTime=(PR_SHOULD_USE_CONTINUATION?new Date().getTime()+250:Infinity);for(;k<elements.length&&new Date().getTime()<endTime;k++){var cs=elements[k];if(cs.className&&cs.className.indexOf('prettyprint')>=0){var nested=false;for(var 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