com.codename1.ui.html.MultiComboBox Maven / Gradle / Ivy
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package com.codename1.ui.html;
import com.codename1.ui.ComboBox;
import com.codename1.ui.Component;
import com.codename1.ui.Display;
import com.codename1.ui.Graphics;
import com.codename1.ui.List;
import com.codename1.ui.list.DefaultListCellRenderer;
import com.codename1.ui.list.DefaultListModel;
import com.codename1.ui.list.ListCellRenderer;
import com.codename1.ui.list.ListModel;
import java.util.Vector;
/**
* A ComboBox control that allows multiple selection and supports OPTGROUP labels.
* Note that this does not inherit from ComboBox but rather from List, since basically like an HTML multiple ComboBox we show an open List
* The List/Combo size is controlled from the outside in HTMLComponent using a wrapping Container.
*
* This class is also used by HTMLComboBox as the list popup when opening the HTMLComboBox (To allow OPTGROUP support)
*
* @author Ofir Leitner
*/
class MultiComboBox extends List {
private boolean multiple; // true if this is a multiple choice combo
private MultiListModel model;
MultiComboBox(boolean multiple) {
this(null,multiple);
}
MultiComboBox(ListModel underlyingModel, boolean multiple) {
super();
setUIID("ComboBox");
this.multiple=multiple;
setScrollToSelected(!multiple); // In multiple comboboxes we don't scroll to selected, as there can be several
model=new MultiListModel(underlyingModel,multiple);
setModel(model);
MultiCellRenderer multiRenderer=new MultiCellRenderer(model);
setRenderer(multiRenderer);
if (underlyingModel!=null) { // Need to scan the existing data since there will be no "addItem" with an optgroup item
for(int i=0;i0) {
if (model.getItemAt(selectedIndex-1) instanceof String) {
if (selectedIndex==1) { // First item is an optgroup
return;
}
model.setDirection(-1);
selectedIndex--;
model.setSelectedIndex(selectedIndex);
}
}
} else if (gameAction == keyFwd) {
if (selectedIndex