Java tutorial
/* * CATMA Computer Aided Text Markup and Analysis * * Copyright (C) 2012 University Of Hamburg * * This program 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. * * 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package de.catma.ui.tagger; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import com.vaadin.terminal.PaintException; import com.vaadin.terminal.PaintTarget; import com.vaadin.terminal.gwt.server.WebApplicationContext; import com.vaadin.terminal.gwt.server.WebBrowser; import com.vaadin.ui.AbstractComponent; import com.vaadin.ui.ClientWidget; import de.catma.CatmaApplication; import de.catma.document.standoffmarkup.usermarkup.TagReference; import de.catma.tag.TagDefinition; import de.catma.ui.client.ui.tagger.VTagger; import de.catma.ui.client.ui.tagger.shared.ClientTagDefinition; import de.catma.ui.client.ui.tagger.shared.ClientTagInstance; import de.catma.ui.client.ui.tagger.shared.TaggerMessageAttribute; import de.catma.ui.client.ui.tagger.shared.TextRange; import de.catma.ui.data.util.JSONSerializationException; import de.catma.ui.tagger.pager.Page; import de.catma.ui.tagger.pager.Pager; import de.catma.util.ColorConverter; /** * @author marco.petris@web.de * */ @ClientWidget(VTagger.class) public class Tagger extends AbstractComponent { public static interface TaggerListener { public void tagInstanceAdded(ClientTagInstance clientTagInstance); public void tagInstancesSelected(List<String> instanceIDs); } private static final long serialVersionUID = 1L; private Map<String, String> attributes = new HashMap<String, String>(); private Pager pager; private TaggerListener taggerListener; private ClientTagInstanceJSONSerializer tagInstanceJSONSerializer; private boolean init = true; private String taggerID; public Tagger(int taggerID, Pager pager, TaggerListener taggerListener) { this.pager = pager; this.taggerListener = taggerListener; this.tagInstanceJSONSerializer = new ClientTagInstanceJSONSerializer(); this.taggerID = String.valueOf(taggerID); attributes.put(TaggerMessageAttribute.ID.name(), this.taggerID); } @Override public void paintContent(PaintTarget target) throws PaintException { super.paintContent(target); if (target.isFullRepaint() && !pager.isEmpty() && !attributes.containsKey(TaggerMessageAttribute.PAGE_SET.name())) { attributes.put(TaggerMessageAttribute.ID.name(), this.taggerID); attributes.put(TaggerMessageAttribute.PAGE_SET.name(), pager.getCurrentPage().toHTML()); try { attributes.put(TaggerMessageAttribute.TAGINSTANCES_ADD.name(), tagInstanceJSONSerializer.toJSON(pager.getCurrentPage().getRelativeTagInstances())); } catch (JSONSerializationException e) { //TODO: handle e.printStackTrace(); } } for (Map.Entry<String, String> entry : attributes.entrySet()) { target.addAttribute(entry.getKey(), entry.getValue()); } attributes.clear(); } /** * Receive and handle events and other variable changes from the client. * * {@inheritDoc} */ @Override public void changeVariables(Object source, Map<String, Object> variables) { super.changeVariables(source, variables); if (variables.containsKey(TaggerMessageAttribute.TAGINSTANCE_ADD.name())) { try { ClientTagInstance tagInstance = tagInstanceJSONSerializer .fromJSON((String) variables.get(TaggerMessageAttribute.TAGINSTANCE_ADD.name())); pager.getCurrentPage().addRelativeTagInstance(tagInstance); taggerListener.tagInstanceAdded(pager.getCurrentPage().getAbsoluteTagInstance(tagInstance)); } catch (JSONSerializationException e) { ((CatmaApplication) getApplication()).showAndLogError("Error adding the Tag!", e); } } if (variables.containsKey(TaggerMessageAttribute.LOGMESSAGE.name())) { System.out.println( "Got log message from client: " + variables.get(TaggerMessageAttribute.LOGMESSAGE.name())); } if (variables.containsKey(TaggerMessageAttribute.TAGINSTANCES_SELECT.name())) { try { List<String> instanceIDs = tagInstanceJSONSerializer.fromInstanceIDJSONArray( (String) variables.get(TaggerMessageAttribute.TAGINSTANCES_SELECT.name())); taggerListener.tagInstancesSelected(instanceIDs); } catch (JSONSerializationException e) { ((CatmaApplication) getApplication()).showAndLogError("Error displaying Tag information!", e); } } } private void setPage(String pageContent) { attributes.put(TaggerMessageAttribute.PAGE_SET.name(), pageContent); try { attributes.put(TaggerMessageAttribute.TAGINSTANCES_ADD.name(), tagInstanceJSONSerializer.toJSON(pager.getCurrentPage().getRelativeTagInstances())); } catch (JSONSerializationException e) { ((CatmaApplication) getApplication()).showAndLogError("Error setting the page!", e); } requestRepaint(); } public void setText(String text) { pager.setText(text); setPage(pager.getCurrentPage().toHTML()); } public void setPage(int pageNumber) { Page page = pager.getPage(pageNumber); setPage(page.toHTML()); } void setTagInstancesVisible(List<ClientTagInstance> tagInstances, boolean visible) { List<ClientTagInstance> currentRelativePageTagInstancesCopy = new ArrayList<ClientTagInstance>(); currentRelativePageTagInstancesCopy.addAll(pager.getCurrentPage().getRelativeTagInstances()); for (ClientTagInstance ti : tagInstances) { List<Page> pages = pager.getPagesForAbsoluteTagInstance(ti); if (!pages.isEmpty()) { if (visible) { for (Page page : pages) { page.addAbsoluteTagInstance(ti); } } else { for (Page page : pages) { page.removeRelativeTagInstance(ti.getInstanceID()); } } } } // we send only the TagInstances of the current page if (visible) { currentRelativePageTagInstancesCopy.clear(); currentRelativePageTagInstancesCopy.addAll(pager.getCurrentPage().getRelativeTagInstances()); } currentRelativePageTagInstancesCopy.retainAll(tagInstances); if (!currentRelativePageTagInstancesCopy.isEmpty()) { String taggerMessageAttribute = TaggerMessageAttribute.TAGINSTANCES_ADD.name(); if (!visible) { taggerMessageAttribute = TaggerMessageAttribute.TAGINSTANCES_REMOVE.name(); } try { attributes.put(taggerMessageAttribute, tagInstanceJSONSerializer.join( //TODO: check if other message attributes need a join as well attributes.get(taggerMessageAttribute), currentRelativePageTagInstancesCopy)); } catch (JSONSerializationException e) { ((CatmaApplication) getApplication()).showAndLogError("Error showing Tags!", e); } requestRepaint(); } } public void addTagInstanceWith(TagDefinition tagDefinition) { try { attributes.put(TaggerMessageAttribute.TAGDEFINITION_SELECTED.name(), new ClientTagDefinitionJSONSerializer().toJSON(new ClientTagDefinition(tagDefinition.getUuid(), ColorConverter.toHex(tagDefinition.getColor())))); requestRepaint(); } catch (JSONSerializationException e) { ((CatmaApplication) getApplication()).showAndLogError("Error adding Tag!", e); } } public void setVisible(List<TagReference> tagReferences, boolean visible) { List<ClientTagInstance> tagInstances = new ArrayList<ClientTagInstance>(); for (TagReference tagReference : tagReferences) { List<TextRange> textRanges = new ArrayList<TextRange>(); textRanges.add( new TextRange(tagReference.getRange().getStartPoint(), tagReference.getRange().getEndPoint())); tagInstances.add(new ClientTagInstance(tagReference.getTagDefinition().getUuid(), tagReference.getTagInstanceID(), ColorConverter.toHex(tagReference.getColor()), textRanges)); } setTagInstancesVisible(tagInstances, visible); } @Override public void attach() { super.attach(); if (init) { WebApplicationContext context = ((WebApplicationContext) getApplication().getContext()); WebBrowser wb = context.getBrowser(); setHeight(wb.getScreenHeight() * 0.47f, UNITS_PIXELS); init = false; } else { setPage(pager.getCurrentPage().toHTML()); } } public void highlight(TextRange relativeTextRange) { try { attributes.put(TaggerMessageAttribute.HIGHLIGHT.name(), new TextRangeJSONSerializer().toJSON(relativeTextRange)); requestRepaint(); } catch (JSONSerializationException e) { ((CatmaApplication) getApplication()).showAndLogError("Error showing KWIC in the Tagger!", e); } } }