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package org.tela_botanica.del.client.composants.formulaires;
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import com.google.gwt.event.dom.client.KeyPressEvent;
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import com.google.gwt.event.dom.client.KeyPressHandler;
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import com.google.gwt.http.client.Request;
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import com.google.gwt.http.client.RequestBuilder;
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import com.google.gwt.http.client.RequestCallback;
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import com.google.gwt.http.client.RequestException;
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import com.google.gwt.http.client.Response;
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import com.google.gwt.http.client.URL;
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import com.google.gwt.json.client.JSONArray;
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import com.google.gwt.json.client.JSONParser;
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import com.google.gwt.json.client.JSONValue;
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import com.google.gwt.user.client.Timer;
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import com.google.gwt.user.client.ui.HasWidgets;
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import com.google.gwt.user.client.ui.SuggestOracle;
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public abstract class AutoCompletionComboBoxPresenteur {
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// Complétion de taxons :
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// http://www.tela-botanica.org/eflore/cel2/jrest/NameSearch/
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private AutoCompletionComboBoxVue autoCompletionComboBoxVue = new AutoCompletionComboBoxVue();
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SuggestOracle.Request requeteOracle;
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SuggestOracle.Callback callBackOracle;
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Timer suggestionTimer = null;
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int tempsAvantRequete = 500;
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String urlRequete = "";
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public AutoCompletionComboBoxPresenteur(String urlRequete) {
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this.urlRequete = urlRequete;
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}
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public void go(HasWidgets composite) {
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composite.add(autoCompletionComboBoxVue);
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gererEvenements();
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}
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public void gererEvenements() {
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autoCompletionComboBoxVue.getSuggestBox().addKeyPressHandler(new KeyPressHandler() {
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public void onKeyPress(KeyPressEvent event) {
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if(event.getUnicodeCharCode() != 0) {
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if(suggestionTimer == null) {
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suggestionTimer = new Timer() {
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public void run() {
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requeteSuggestions(autoCompletionComboBoxVue.getSuggestBox().getValue());
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}
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};
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suggestionTimer.schedule(tempsAvantRequete);
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} else {
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suggestionTimer.schedule(tempsAvantRequete);
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}
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}
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}
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});
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requeteOracle = new SuggestOracle.Request();
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callBackOracle = new SuggestOracle.Callback() {
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public void onSuggestionsReady(
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com.google.gwt.user.client.ui.SuggestOracle.Request request,
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com.google.gwt.user.client.ui.SuggestOracle.Response response) {
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autoCompletionComboBoxVue.getSuggestBox().showSuggestionList();
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}
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};
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}
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public void setTempsAvantRequete(int temps) {
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tempsAvantRequete = temps;
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}
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public int getTempsAvantRequete(int temps) {
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return tempsAvantRequete;
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}
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public String getValeur() {
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return autoCompletionComboBoxVue.getSuggestBox().getValue();
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}
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private void requeteSuggestions(final String requete) {
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String requeteAjax = requete;
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String[] parties = requete.split(" ", 2);
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if(parties.length == 2) {
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if(parties[1].trim().isEmpty()) {
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parties[1] = "*";
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}
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requeteAjax = parties[0]+"/"+parties[1];
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}
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String urlProxy = "proxy.php?url="+URL.encode(urlRequete+requeteAjax);
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RequestBuilder rb = new RequestBuilder(RequestBuilder.GET, urlProxy) ;
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try {
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rb.sendRequest(null, new RequestCallback() {
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public void onError(final Request request, final Throwable exception) {
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// TODO Auto-generated method stub
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}
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public void onResponseReceived(final Request request,
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final Response response) {
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String[] valeurs = parserResultatRequete(response);
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autoCompletionComboBoxVue.remplirListe(valeurs);
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requeteOracle.setQuery(requete);
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autoCompletionComboBoxVue.afficherSuggestions(requeteOracle, callBackOracle);
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}
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}) ;
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} catch (RequestException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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}
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}
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protected abstract String[] parserResultatRequete(Response response);
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}
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