Properly override updateItem method of list cells
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367a690dc8
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9dade2cf77
@ -28,7 +28,10 @@ public class ContactListCell extends ListCell<Contact> {
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@Override
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protected void updateItem(Contact contact, boolean empty) {
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super.updateItem(contact, empty);
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if (!empty && contact != null) {
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if (empty || contact == null) {
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setText(null);
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setGraphic(null);
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} else {
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// the infoLabel displays specific contact info, i.e. status of a user or amount
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// of members in a group
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Label infoLabel = null;
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@ -51,7 +54,7 @@ public class ContactListCell extends ListCell<Contact> {
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break;
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}
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infoLabel.setTextFill(textColor);
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} else
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} else
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// group specific infos
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infoLabel = new Label(String.valueOf(((Group) contact).getContacts().size()) + " members");
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setGraphic(new VBox(new Label(contact.getName()), infoLabel));
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@ -45,10 +45,15 @@ public class MessageListCell extends ListCell<Message> {
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@Override
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protected void updateItem(Message message, boolean empty) {
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super.updateItem(message, empty);
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setGraphic(!empty && message != null ? new HBox(
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if(empty || message == null) {
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setText(null);
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setGraphic(null);
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} else {
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setGraphic(new HBox(
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new VBox(
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new Label(dateFormat.format(message.getCreationDate())),
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new Label(message.getText())),
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new Label("", new ImageView(statusImages.get(message.getStatus())))) : null);
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new Label("", new ImageView(statusImages.get(message.getStatus())))));
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}
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}
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}
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