Java tutorial
/* This file belongs to the Servoy development and deployment environment, Copyright (C) 1997-2014 Servoy BV This program is free software; you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program 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 Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program; if not, see http://www.gnu.org/licenses or write to the Free Software Foundation,Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 */ package com.servoy.j2db.server.ngclient.template; import java.io.IOException; import java.io.PrintWriter; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Map.Entry; import org.apache.commons.lang3.StringEscapeUtils; import org.jsoup.helper.StringUtil; import org.sablo.specification.WebComponentPackageSpecification; import org.sablo.specification.WebComponentSpecProvider; import org.sablo.specification.WebLayoutSpecification; import com.servoy.j2db.persistence.Form; import com.servoy.j2db.persistence.IFormElement; import com.servoy.j2db.persistence.IPersist; import com.servoy.j2db.persistence.LayoutContainer; import com.servoy.j2db.persistence.PositionComparator; import com.servoy.j2db.server.ngclient.FormElementHelper; import com.servoy.j2db.server.ngclient.ServoyDataConverterContext; import com.servoy.j2db.util.Debug; /** * Generates HTML for a flow layout form * @author jblok, lvostinar */ @SuppressWarnings("nls") public class FormLayoutStructureGenerator { public static void generateLayout(Form form, String realFormName, ServoyDataConverterContext context, PrintWriter writer, boolean design, boolean highlight) { try { FormLayoutGenerator.generateFormStartTag(writer, form, realFormName, false, design); Iterator<IPersist> components = form.getAllObjects(PositionComparator.XY_PERSIST_COMPARATOR); while (components.hasNext()) { IPersist component = components.next(); if (component instanceof LayoutContainer) { generateLayoutContainer((LayoutContainer) component, context, writer, design, highlight); } else if (component instanceof IFormElement) { FormLayoutGenerator.generateFormElement(writer, FormElementHelper.INSTANCE.getFormElement((IFormElement) component, context, null), design, highlight); } } FormLayoutGenerator.generateFormEndTag(writer); } catch (Exception e) { Debug.error(e); } } private static void generateLayoutContainer(LayoutContainer container, ServoyDataConverterContext context, PrintWriter writer, boolean design, boolean highlight) throws IOException { if (highlight) writer.print("<div class='highlight_element'>"); writer.print("<"); writer.print(container.getTagType()); if (design) { writer.print(" svy-id='"); writer.print(container.getUUID().toString()); writer.print("'"); WebComponentPackageSpecification<WebLayoutSpecification> pkg = WebComponentSpecProvider.getInstance() .getLayoutSpecifications().get(container.getPackageName()); WebLayoutSpecification spec = null; if (pkg != null && (spec = pkg.getSpecification(container.getSpecName())) != null) { List<String> allowedChildren = spec.getAllowedChildren(); if (allowedChildren.size() > 0) { writer.print(" svy-allowed-children='"); writer.print("[" + StringUtil.join(allowedChildren, ",") + "]"); writer.print("'"); } writer.print(" svy-layoutname='"); writer.print(spec.getName()); writer.print("'"); if (spec.getDesignStyleClass() != null) { writer.print(" svy-designclass='"); writer.print(spec.getDesignStyleClass()); writer.print("'"); } } } if (container.getElementId() != null) { writer.print(" id='"); writer.print(container.getElementId()); writer.print("' "); } Map<String, String> attributes = container.getAttributes(); if (attributes != null) { for (Entry<String, String> entry : attributes.entrySet()) { writer.print(" "); StringEscapeUtils.ESCAPE_ECMASCRIPT.translate(entry.getKey(), writer); if (entry.getValue() != null && entry.getValue().length() > 0) { writer.print("=\""); StringEscapeUtils.ESCAPE_ECMASCRIPT.translate(entry.getValue(), writer); writer.print("\""); } } } writer.println(">"); Iterator<IPersist> components = container.getAllObjects(PositionComparator.XY_PERSIST_COMPARATOR); while (components.hasNext()) { IPersist component = components.next(); if (component instanceof LayoutContainer) { generateLayoutContainer((LayoutContainer) component, context, writer, design, highlight); } else if (component instanceof IFormElement) { FormLayoutGenerator.generateFormElement(writer, FormElementHelper.INSTANCE.getFormElement((IFormElement) component, context, null), design, highlight); } } writer.print("</"); writer.print(container.getTagType()); writer.print(">"); if (highlight) writer.print("</div>"); } // /** // * @param form // * @param fs // * @param writer // */ // public static void generate(Form form, ServoyDataConverterContext context, PrintWriter writer) // { // try // { // Map<String, FormElement> allFormElements = new HashMap<String, FormElement>(); // // Iterator<IFormElement> it = form.getFormElementsSortedByFormIndex(); // while (it.hasNext()) // { // IFormElement element = it.next(); // FormElement fe = ComponentFactory.getFormElement(element, context, null); // allFormElements.put(element.getUUID().toString(), fe); // // //make life easy if a real name is used // if (element.getName() != null) allFormElements.put(element.getName(), fe); // } // // HTMLParser parser = new HTMLParser(form.getLayoutGrid()); // List<MarkupElement> elems = parser.parse(); // // writer.println(String.format("<div ng-controller=\"%1$s\" ng-style=\"formStyle\" svy-layout-update>", form.getName())); // // XmlTag skipUntilClosed = null; // Iterator<MarkupElement> elem_it = elems.iterator(); // while (elem_it.hasNext()) // { // XmlTag tag = (XmlTag)elem_it.next(); // if (skipUntilClosed != null) // { // if (!tag.closes(skipUntilClosed)) continue; // skipUntilClosed = null; // continue; // } // // IValueMap attributes = tag.getAttributes(); // String id = attributes.getString("id"); // FormElement fe = allFormElements.get(id); // if (fe != null) // { //// if (fe.getTagname().equals(tag.getName())) does not need to be same, if id matches we replace // { // writer.print(fe.toString()); // if (!tag.isOpenClose()) skipUntilClosed = tag; // } // } // else // { // writer.print(tag.toCharSequence()); // } // } // writer.println("</div>"); // } // catch (Exception e) // { // Debug.error(e); // } // } // /** // * Merge of wicket MarkupParser,HTMLHandler,Markup (since not usable without running inside wicket) // * @author Jan Blok // */ // public static class HTMLParser // { // /** Map of simple tags. */ // private static final Map<String, Boolean> doesNotRequireCloseTag = new HashMap<String, Boolean>(); // // static // { // // Tags which are allowed not be closed in HTML // doesNotRequireCloseTag.put("p", Boolean.TRUE); // doesNotRequireCloseTag.put("br", Boolean.TRUE); // doesNotRequireCloseTag.put("img", Boolean.TRUE); // doesNotRequireCloseTag.put("input", Boolean.TRUE); // doesNotRequireCloseTag.put("hr", Boolean.TRUE); // doesNotRequireCloseTag.put("link", Boolean.TRUE); // doesNotRequireCloseTag.put("meta", Boolean.TRUE); // } // // private final IXmlPullParser xmlParser; // private final List<MarkupElement> markupElements; // // public HTMLParser(final String markup) throws IOException, ResourceStreamNotFoundException // { // xmlParser = new XmlPullParser(); // xmlParser.parse(markup); // // markupElements = new ArrayList<MarkupElement>(); // } // // public List<MarkupElement> parse() throws ParseException // { // // Loop through parser tags // MarkupElement me = null; // while ((me = xmlParser.nextTag()) != null) // { // markupElements.add(me); // } // // // Loop through tags // ArrayListStack<XmlTag> stack = new ArrayListStack<XmlTag>(); // Iterator<MarkupElement> it = markupElements.iterator(); // while (it.hasNext()) // { // XmlTag tag = (XmlTag)it.next(); // // // Check tag type // if (tag.isOpen()) // { // // Push onto stack // stack.push(tag); // } // else if (tag.isClose()) // { // // Check that there is something on the stack // if (stack.size() > 0) // { // // Pop the top tag off the stack // XmlTag top = stack.pop(); // // // If the name of the current close tag does not match the // // tag on the stack then we may have a mismatched close tag // boolean mismatch = !top.hasEqualTagName(tag); // // if (mismatch) // { // // Pop any simple tags off the top of the stack // while (mismatch && !requiresCloseTag(top.getName())) // { // // mark them as open/close // top.setType(XmlTag.OPEN_CLOSE); // // // Pop simple tag // if (stack.isEmpty()) // { // break; // } // top = stack.pop(); // // // Does new top of stack mismatch too? // mismatch = !top.hasEqualTagName(tag); // } // // // If adjusting for simple tags did not fix the problem, // // it must be a real mismatch. // if (mismatch) // { // throw new ParseException("Tag " + top.toUserDebugString() + " has a mismatched close tag at " + tag.toUserDebugString(), // top.getPos()); // } // } // // // Tag matches, so add pointer to matching tag // tag.setOpenTag(top); // } // else // { // throw new ParseException("Tag " + tag.toUserDebugString() + " does not have a matching open tag", tag.getPos()); // } // } // else if (tag.isOpenClose()) // { // // Tag closes itself // tag.setOpenTag(tag); // } // } // // return markupElements; // } // // /** // * Gets whether this tag does not require a closing tag. // * // * @param name // * The tag's name, e.g. a, br, div, etc. // * @return True if this tag does not require a closing tag // */ // public static boolean requiresCloseTag(final String name) // { // return doesNotRequireCloseTag.get(name.toLowerCase()) == null; // } // } }