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| /* |
| Auto-Completion Textbox for GWT |
| Copyright (C) 2006 Oliver Albers http://gwt.components.googlepages.com/ |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| This library 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with this library; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| |
| */ |
| |
| package org.tela_botanica.client.vues; |
| |
| |
| // TODO : traiter latence (augmenter en fonction rapidit� saisie + texte vide) |
| // TODO : traitement espace apres l'espece (%20) |
| // TODO : Utiliser Suggestbox et les Associating Data Transfer Objects (DTOs) with Suggestion Objects |
| |
| import com.google.gwt.user.client.ui.KeyboardListener; |
| import com.google.gwt.user.client.ui.ListBox; |
| import com.google.gwt.user.client.ui.PopupPanel; |
| import com.google.gwt.user.client.ui.TextBox; |
| import com.google.gwt.user.client.ui.Widget; |
| import com.google.gwt.user.client.DOM; |
| import com.google.gwt.user.client.Event; |
| |
| import java.util.Vector; |
| import java.util.HashMap; |
| |
| import org.tela_botanica.client.interfaces.FournisseurListe; |
| import org.tela_botanica.client.interfaces.Rafraichissable; |
| |
| |
| |
| public class AutoCompleteAsyncTextBox extends TextBox implements KeyboardListener { |
| |
| |
| // Fournisseur de donnees |
| private FournisseurListe fournisseurDeDonnees=null; |
| |
| |
| |
| private HashMap cache = new HashMap(); |
| private boolean searching = false; |
| private Rafraichissable rafraichissable=null; |
| |
| protected PopupPanel choicesPopup = new PopupPanel(true); |
| protected ListBox choices = new ListBox() { |
| public void onBrowserEvent(Event event) { |
| if (Event.ONCLICK == DOM.eventGetType(event)) { |
| complete(); |
| } |
| } |
| }; |
| protected Vector items = new Vector(); |
| protected boolean visible = false; |
| |
| /** |
| * Value linked to current text |
| */ |
| protected String currentValue = null; |
| |
| |
| |
| /** |
| * Default Constructor |
| * |
| */ |
| public AutoCompleteAsyncTextBox(Rafraichissable r) |
| { |
| super(); |
| rafraichissable=r; |
| this.addKeyboardListener(this); |
| choices.sinkEvents(Event.ONCLICK); |
| this.setStyleName("AutoCompleteAsyncTextBox"); |
| |
| choicesPopup.add(choices); |
| choicesPopup.addStyleName("AutoCompleteChoices"); |
| |
| choices.setStyleName("list"); |
| |
| } |
| |
| |
| |
| public void setFournisseurDeDonnees(FournisseurListe fournisseurDeDonnees) { |
| |
| this.fournisseurDeDonnees=fournisseurDeDonnees; |
| } |
| |
| private void doFetchData(String match) { |
| |
| |
| String rematch=match.replaceAll(" ","/"); |
| rematch=rematch.replaceAll("%",""); |
| |
| if (this.fournisseurDeDonnees!=null && searching==false) { |
| searching=true; |
| |
| fournisseurDeDonnees.obtenirListeDonnees(rafraichissable, rematch); |
| |
| } |
| } |
| |
| |
| public void onKeyDown(Widget arg0, char arg1, int arg2) { |
| |
| |
| if(arg1 == KEY_ENTER) |
| { |
| enterKey(arg0, arg1, arg2); |
| } |
| else if(arg1 == KEY_DOWN) |
| { |
| downKey(arg0, arg1, arg2); |
| } |
| else if(arg1 == KEY_UP) |
| { |
| upKey(arg0, arg1, arg2); |
| } |
| else if(arg1 == KEY_ESCAPE) |
| { |
| escapeKey(arg0, arg1, arg2); |
| } |
| |
| |
| } |
| /** |
| * Not used at all (probleme avec ie, qui ne comprend pas les touches meta) |
| */ |
| public void onKeyPress(Widget arg0, char arg1, int arg2) { |
| |
| |
| } |
| |
| // The down key was pressed. |
| protected void downKey(Widget arg0, char arg1, int arg2) { |
| |
| int selectedIndex = choices.getSelectedIndex(); |
| selectedIndex++; |
| if (selectedIndex >= choices.getItemCount()) |
| { |
| selectedIndex = 0; |
| } |
| choices.setSelectedIndex(selectedIndex); |
| } |
| |
| // The up key was pressed. |
| protected void upKey(Widget arg0, char arg1, int arg2) { |
| int selectedIndex = choices.getSelectedIndex(); |
| selectedIndex--; |
| if(selectedIndex < 0) |
| { |
| selectedIndex = choices.getItemCount() - 1; |
| } |
| choices.setSelectedIndex(selectedIndex); |
| } |
| |
| // The enter key was pressed. |
| protected void enterKey(Widget arg0, char arg1, int arg2) { |
| if(visible) |
| { |
| complete(); |
| } |
| else { |
| // Validation de l'entree : appel asynchrone |
| /* if (autoCompleteAsyncTextBoxListeners!= null) { |
| autoCompleteAsyncTextBoxListeners.fireTextBoxEnter(this,this.getText(),currentValue); |
| }*/ |
| currentValue=null; |
| this.setText(""); |
| this.setValue(null); |
| } |
| |
| } |
| |
| //The escape key was pressed. |
| protected void escapeKey(Widget arg0, char arg1, int arg2) { |
| choices.clear(); |
| items.clear(); |
| choicesPopup.hide(); |
| visible = false; |
| |
| } |
| |
| |
| // Any other non-special key was pressed. |
| protected void otherKey(Widget arg0, char arg1, int arg2) { |
| |
| |
| // Lancement appel |
| String text = this.getText(); |
| |
| |
| if(text.length() > 0) |
| { |
| |
| currentValue=null; |
| |
| items.clear(); |
| |
| if (getFromCache(text)!=null) { |
| items=getFromCache(text); |
| displayList(); |
| } |
| else { |
| |
| |
| |
| this.doFetchData(text); |
| } |
| } |
| |
| |
| |
| |
| } |
| |
| public void onKeyUp(Widget arg0, char arg1, int arg2) { |
| |
| switch(arg1) { |
| case KEY_ALT: |
| case KEY_CTRL: |
| case KEY_DOWN: |
| case KEY_END: |
| case KEY_ENTER: |
| case KEY_ESCAPE: |
| case KEY_HOME: |
| case KEY_LEFT: |
| case KEY_PAGEDOWN: |
| case KEY_PAGEUP: |
| case KEY_RIGHT: |
| case KEY_SHIFT: |
| case KEY_TAB: |
| case KEY_UP: |
| break; |
| default: |
| otherKey(arg0, arg1, arg2); |
| break; |
| } |
| |
| } |
| |
| |
| // Display assistant |
| |
| public void displayList() { |
| |
| searching=false; |
| if(this.items.size() > 0) |
| { |
| |
| addToCache(this.getText(),(Vector) items.clone()); |
| |
| choices.clear(); |
| |
| for(int i = 0; i < items.size(); i++) |
| { |
| choices.addItem(((String [])items.get(i))[0],((String [])items.get(i))[1]); |
| } |
| |
| |
| // if there is only one match and it is what is in the |
| // text field anyways there is no need to show autocompletion |
| // if(items.size() == 1 && (((String []) items.get(0))[0]).compareTo(this.getText()) == 0) |
| // { |
| // choicesPopup.hide(); |
| // } else { |
| choices.setSelectedIndex(0); |
| choices.setVisibleItemCount(items.size()); |
| |
| |
| visible = true; |
| choicesPopup.setPopupPosition(this.getAbsoluteLeft(), this.getAbsoluteTop() + this.getOffsetHeight()); |
| choicesPopup.setPopupPosition(this.getAbsoluteLeft(), this.getAbsoluteTop() + this.getOffsetHeight()); |
| choicesPopup.setWidth(this.getOffsetWidth() + "px"); |
| choices.setWidth(this.getOffsetWidth() + "px"); |
| |
| choicesPopup.show(); |
| |
| // } |
| |
| } else { |
| visible = false; |
| choicesPopup.hide(); |
| } |
| } |
| |
| /** |
| * A mouseclick in the list of items |
| */ |
| public void onChange(Widget arg0) { |
| complete(); |
| } |
| |
| |
| public void onClick(Widget arg0) { |
| complete(); |
| } |
| |
| // add selected item to textbox |
| protected void complete() |
| { |
| |
| |
| if(choices.getItemCount() > 0) |
| { |
| this.setText(choices.getItemText(choices.getSelectedIndex())); |
| currentValue=choices.getValue(choices.getSelectedIndex()); |
| /* if (autoCompleteAsyncTextBoxListeners!= null) { |
| autoCompleteAsyncTextBoxListeners.fireTextBoxComplete(responseTextHandler,this.getText(),currentValue); |
| }*/ |
| } |
| |
| visible=false; |
| items.clear(); |
| choices.clear(); |
| choicesPopup.hide(); |
| } |
| |
| |
| public void addItem(String item, String value) { |
| items.add(new String [] {item, value}); |
| } |
| |
| private void addToCache (String query, Vector result) |
| { |
| cache.put(query.toLowerCase(),result); |
| } |
| |
| private Vector getFromCache (String query) |
| { |
| return (Vector) cache.get(query.toLowerCase()); |
| } |
| |
| |
| |
| public String getValue() { |
| return currentValue; |
| } |
| |
| |
| public void setValue(String value) { |
| this.currentValue=value; |
| } |
| |
| |
| |
| |
| } |
| |