Java tutorial
/** * Copyright (C) 2010-2016 Structr GmbH * * This file is part of Structr <http://structr.org>. * * Structr is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * Structr is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Structr. If not, see <http://www.gnu.org/licenses/>. */ package org.structr.rest.serialization; import java.io.IOException; import java.io.PrintWriter; import java.util.Collections; import java.util.LinkedHashSet; import java.util.List; import java.util.Set; import org.apache.commons.lang3.StringUtils; import org.structr.common.PropertyView; import org.structr.common.SecurityContext; import org.structr.core.GraphObject; import org.structr.core.app.App; import org.structr.core.app.StructrApp; import org.structr.core.entity.SchemaNode; import org.structr.core.graph.Tx; import org.structr.rest.serialization.html.Attr; import org.structr.rest.serialization.html.Document; import org.structr.rest.serialization.html.Tag; import org.structr.rest.serialization.html.attr.AtDepth; import org.structr.rest.serialization.html.attr.Css; import org.structr.rest.serialization.html.attr.Href; import org.structr.rest.serialization.html.attr.If; import org.structr.rest.serialization.html.attr.Onload; import org.structr.rest.serialization.html.attr.Type; /** * * */ public class StructrJsonHtmlWriter implements RestWriter { private static final Set<String> hiddenViews = new LinkedHashSet<>(); private static final int CLOSE_LEVEL = 5; private static final String LI = "li"; private static final String UL = "ul"; private SecurityContext securityContext = null; private Document doc = null; private Tag currentElement = null; private Tag previousElement = null; private boolean hasName = false; private String lastName = null; private final String restPath = "/structr/rest"; private String propertyView = ""; static { hiddenViews.add(PropertyView.All); hiddenViews.add(PropertyView.Html); hiddenViews.add(PropertyView.Ui); } public StructrJsonHtmlWriter(final SecurityContext securityContext, final PrintWriter rawWriter) { this.securityContext = securityContext; this.doc = new Document(rawWriter); } @Override public void setIndent(String indent) { doc.setIndent(indent); } @Override public SecurityContext getSecurityContext() { return securityContext; } @Override public RestWriter beginDocument(final String baseUrl, final String propertyView) throws IOException { String currentType = baseUrl.replace(restPath + "/", "").replace("/" + propertyView, ""); if (!propertyView.equals("public")) { this.propertyView = "/" + propertyView; } Tag head = doc.block("head"); // head.empty("link").attr(new Rel("stylesheet"), new Type("text/css"), new Href("/structr/css/rest.css")); // head.inline("script").attr(new Type("text/javascript"), new Src("/structr/js/CollapsibleLists.js")); head.inline("style").attr(new Type("text/css")).text( "body,html{font-family:\"Liberation Mono\",\"DejaVu Sans Mono\",Consolas,Monaco,\"Vera Sans Mono\",\"Lucida Console\",\"Courier New\",monospace!important;font-size:9pt;padding:0;margin:0}div#top{border-bottom:1px solid #a5a5a5;line-height:2em;background:#363636;background:-webkit-gradient(linear,left bottom,left top,from(#363636),to(#666)) no-repeat;background:-moz-linear-gradient(90deg,#363636,#666) no-repeat;filter:progid:DXImageTransform.Microsoft.Gradient(StartColorStr='#666666', EndColorStr='#363636', GradientType=0);padding:20px;font-family:Arial,Helvetica,Sans-serif}div#top a{color:#fff;text-decoration:none;font-weight:700;margin-right:1em}div#left{background-color:#eee;padding:10px 20px}div#left a{color:#666;text-decoration:none;font-weight:700;margin-right:1em}div#right{clear:both;padding-left:20px}ul{list-style-type:none}b{font-weight:700;color:#444}a.id,a.id:visited{color:#00a}span.type{font-weight:400;color:#080}span.id{font-weight:400;color:#999}span.name{font-weight:700;color:#666}span.string{color:#c60}span.boolean,span.number{color:#00a}span.null{color:#999}.collapsibleListOpen{list-style-image:url(data:image/gif;base64,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);cursor:pointer}.collapsibleListClosed{list-style-image:url(data:image/gif;base64,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);cursor:pointer}.collapsibleList{cursor:default}button.collapse,button.expand{font-family:\"Liberation Mono\",\"DejaVu Sans Mono\",Consolas,Monaco,\"Vera Sans Mono\",\"Lucida Console\",\"Courier New\",monospace!important;float:right;margin:-.3em 1em 0 0}"); head.inline("script").attr(new Type("text/javascript")).text( "var CollapsibleLists=new function(){function g(b){return function(a){a||(a=window.event);for(a=a.target?a.target:a.srcElement;\"LI\"!=a.nodeName;)a=a.parentNode;a==b&&f(b)}}function f(b){for(var a=b.className.match(/(^| )collapsibleListClosed( |$)/),c=b.getElementsByTagName(\"ul\"),d=0;d<c.length;d++){for(var e=c[d];\"LI\"!=e.nodeName;)e=e.parentNode;e==b&&(c[d].style.display=a?\"block\":\"none\")}b.className=b.className.replace(/(^| )collapsibleList(Open|Closed)( |$)/,\"\");0<c.length&&(b.className+=\" collapsibleList\"+\n" + "(a?\"Open\":\"Closed\"))}this.apply=function(b){for(var a=document.getElementsByTagName(\"ul\"),c=0;c<a.length;c++)if(a[c].className.match(/(^| )collapsibleList( |$)/)&&(this.applyTo(a[c],!0),!b))for(var d=a[c].getElementsByTagName(\"ul\"),e=0;e<d.length;e++)d[e].className+=\" collapsibleList\"};this.applyTo=function(b,a){for(var c=b.getElementsByTagName(\"li\"),d=0;d<c.length;d++)a&&b!=c[d].parentNode||(c[d].addEventListener?c[d].addEventListener(\"click\",g(c[d]),!1):c[d].attachEvent(\"onclick\",g(c[d])),f(c[d]))};\n" + "this.openAll=function(){var b = [].slice.call(document.getElementsByClassName(\"collapsibleListClosed\")); [].forEach.call(b, function (el) { f(el); });};this.closeAll=function(){var b = [].slice.call(document.getElementsByClassName(\"collapsibleListOpen\")); [].forEach.call(b, function (el) { f(el); });}};"); head.inline("title").text(baseUrl); Tag body = doc.block("body").attr(new Onload("CollapsibleLists.apply(true);")); Tag top = body.block("div").id("top"); final App app = StructrApp.getInstance(securityContext); final Tag left = body.block("div").id("left"); left.inline("button").attr(new Css("collapse right")) .attr(new Attr("onclick", "CollapsibleLists.closeAll()")).text(" - "); left.inline("button").attr(new Css("expand right")).attr(new Attr("onclick", "CollapsibleLists.openAll()")) .text(" + "); try (final Tx tx = app.tx()) { final List<SchemaNode> schemaNodes = app.nodeQuery(SchemaNode.class).getAsList(); Collections.sort(schemaNodes); for (SchemaNode node : schemaNodes) { final String rawType = node.getName(); top.inline("a").attr(new Href(restPath + "/" + rawType), new If(rawType.equals(currentType), new Css("active"))).text(rawType); } } catch (Throwable t) { t.printStackTrace(); } for (String view : StructrApp.getConfiguration().getPropertyViews()) { if (!hiddenViews.contains(view)) { left.inline("a").attr(new Href(restPath + "/" + currentType + "/" + view), new If(view.equals(propertyView), new Css("active"))).text(view); } } // main div currentElement = body.block("div").id("right"); // h1 title currentElement.block("h1").text(baseUrl); // begin ul currentElement = currentElement.block("ul"); return this; } @Override public RestWriter endDocument() throws IOException { // finally render document doc.render(); return this; } @Override public RestWriter beginArray() throws IOException { currentElement.inline("span").text("["); // print [ currentElement = currentElement.block(UL).attr(new AtDepth(CLOSE_LEVEL, new Css("collapsibleList"))); hasName = false; return this; } @Override public RestWriter endArray() throws IOException { currentElement = currentElement.parent(); // end LI currentElement.inline("span").text("]"); // print ] previousElement = currentElement; currentElement = currentElement.parent(); // end UL return this; } @Override public RestWriter beginObject() throws IOException { return beginObject(null); } @Override public RestWriter beginObject(final GraphObject graphObject) throws IOException { if (!hasName) { currentElement = currentElement.block(LI); } currentElement.inline("span").text("{"); currentElement = currentElement.block(UL).attr(new AtDepth(CLOSE_LEVEL, new Css("collapsibleList"))); hasName = false; return this; } @Override public RestWriter endObject() throws IOException { return endObject(null); } @Override public RestWriter endObject(final GraphObject graphObject) throws IOException { currentElement = currentElement.parent(); // end UL currentElement.inline("span").text("}"); // print } previousElement = currentElement; currentElement = currentElement.parent(); // end LI return this; } @Override public RestWriter name(String name) throws IOException { if (previousElement != null) { previousElement.appendComma(); } previousElement = currentElement; currentElement = currentElement.block(LI); currentElement.inline("b").text("\"", name, "\":"); lastName = name; hasName = true; return this; } @Override public RestWriter value(String value) throws IOException { if (!hasName) { currentElement = currentElement.block("li"); } if ("id".equals(lastName)) { currentElement.inline("a").css("id").attr(new Href(restPath + "/" + value + propertyView)).text("\"", value, "\""); } else { value = value.replaceAll("\\\\", "\\\\\\\\"); // escape backslashes in strings value = value.replaceAll("\"", "\\\\\\\""); // escape quotation marks inside strings // Escape for HTML output value = StringUtils.replaceEach(value, new String[] { "&", "<", ">" }, new String[] { "&", "<", ">" }); currentElement.inline("span").css("string").text("\"", value, "\""); } currentElement = currentElement.parent(); // end LI hasName = false; return this; } @Override public RestWriter nullValue() throws IOException { if (!hasName) { currentElement = currentElement.block("li"); } currentElement.inline("span").css("null").text("null"); currentElement = currentElement.parent(); hasName = false; return this; } @Override public RestWriter value(boolean value) throws IOException { if (!hasName) { currentElement = currentElement.block("li"); } currentElement.inline("span").css("boolean").text(value); currentElement = currentElement.parent(); hasName = false; return this; } @Override public RestWriter value(double value) throws IOException { if (!hasName) { currentElement = currentElement.block("li"); } currentElement.inline("span").css("number").text(value); currentElement = currentElement.parent(); hasName = false; return this; } @Override public RestWriter value(long value) throws IOException { if (!hasName) { currentElement = currentElement.block("li"); } currentElement.inline("span").css("number").text(value); currentElement = currentElement.parent(); hasName = false; return this; } @Override public RestWriter value(Number value) throws IOException { if (!hasName) { currentElement = currentElement.block("li"); } currentElement.inline("span").css("number").text(value); currentElement = currentElement.parent(); hasName = false; return this; } }