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Package: ComboBoxBindings

ComboBoxBindings

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ComboBoxBindings(Executor, CellBinder)
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bind(ComboBox, PresentationModel, Optional)
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finalize(ComboBox, ObservableList, ReadOnlyObjectProperty, Optional)
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lambda$bind$2(ComboBox, KeyEvent)
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lambda$bind$3(PresentationModel)
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lambda$bind$4(ComboBox, ReadOnlyObjectProperty, Optional, ObservableList)
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lambda$new$0(ActionEvent)
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lambda$new$1(CellBinder, ListView)
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static {...}
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Coverage

1: /*
2: * *************************************************************************************************************************************************************
3: *
4: * SteelBlue: DCI User Interfaces
5: * http://tidalwave.it/projects/steelblue
6: *
7: * Copyright (C) 2015 - 2024 by Tidalwave s.a.s. (http://tidalwave.it)
8: *
9: * *************************************************************************************************************************************************************
10: *
11: * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
12: * You may obtain a copy of the License at
13: *
14: * http://www.apache.org/licenses/LICENSE-2.0
15: *
16: * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
17: * CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
18: *
19: * *************************************************************************************************************************************************************
20: *
21: * git clone https://bitbucket.org/tidalwave/steelblue-src
22: * git clone https://github.com/tidalwave-it/steelblue-src
23: *
24: * *************************************************************************************************************************************************************
25: */
26: package it.tidalwave.role.ui.javafx.impl.combobox;
27:
28: import javax.annotation.Nonnull;
29: import java.util.List;
30: import java.util.Optional;
31: import java.util.concurrent.Executor;
32: import javafx.beans.property.ReadOnlyObjectProperty;
33: import javafx.beans.value.ChangeListener;
34: import javafx.collections.ObservableList;
35: import javafx.event.ActionEvent;
36: import javafx.event.EventHandler;
37: import javafx.scene.control.ComboBox;
38: import javafx.scene.control.ListCell;
39: import javafx.scene.control.ListView;
40: import javafx.util.Callback;
41: import it.tidalwave.role.ui.PresentationModel;
42: import it.tidalwave.role.ui.UserAction;
43: import it.tidalwave.role.ui.UserActionProvider;
44: import it.tidalwave.role.ui.javafx.impl.common.CellBinder;
45: import it.tidalwave.role.ui.javafx.impl.common.ChangeListenerSelectableAdapter;
46: import it.tidalwave.role.ui.javafx.impl.common.DelegateSupport;
47: import it.tidalwave.role.ui.javafx.impl.common.JavaFXWorker;
48: import it.tidalwave.role.ui.javafx.impl.list.AsObjectListCell;
49: import lombok.extern.slf4j.Slf4j;
50: import static javafx.scene.input.KeyCode.*;
51: import static it.tidalwave.role.ui.UserActionProvider._UserActionProvider_;
52: import static it.tidalwave.role.ui.javafx.impl.common.JavaFXWorker.childrenPm;
53:
54: /***************************************************************************************************************************************************************
55: *
56: * @author Fabrizio Giudici
57: *
58: **************************************************************************************************************************************************************/
59: @Slf4j
60: public class ComboBoxBindings extends DelegateSupport
61: {
62: @Nonnull
63: private final CellBinder cellBinder;
64:
65: private final Callback<ListView<PresentationModel>, ListCell<PresentationModel>> cellFactory;
66:
67: private final ChangeListener<PresentationModel> changeListener = new ChangeListenerSelectableAdapter(executor);
68:
69: /***********************************************************************************************************************************************************
70: * Event handler that executes the default action bound to the given combobox item.
71: **********************************************************************************************************************************************************/
72: private final EventHandler<ActionEvent> eventHandler = event ->
73: {
74: final var comboBox = (ComboBox<PresentationModel>)event.getSource();
75: final var selectedPm = comboBox.getSelectionModel().getSelectedItem();
76: selectedPm.maybeAs(_UserActionProvider_)
77: .flatMap(UserActionProvider::getOptionalDefaultAction)
78: .ifPresent(UserAction::actionPerformed);
79: };
80:
81: /***********************************************************************************************************************************************************
82: *
83: **********************************************************************************************************************************************************/
84: public ComboBoxBindings (@Nonnull final Executor executor, @Nonnull final CellBinder cellBinder)
85: {
86: super(executor);
87: this.cellBinder = cellBinder;
88: cellFactory = comboBox -> new AsObjectListCell<>(cellBinder);
89: }
90:
91: /***********************************************************************************************************************************************************
92: * {@inheritDoc}
93: **********************************************************************************************************************************************************/
94: public void bind (@Nonnull final ComboBox<PresentationModel> comboBox,
95: @Nonnull final PresentationModel pm,
96: @Nonnull final Optional<Runnable> callback)
97: {
98: comboBox.setCellFactory(cellFactory);
99: comboBox.setButtonCell(new AsObjectListCell<>(cellBinder));
100: comboBox.setOnAction(eventHandler);
101:
102: // FIXME: WEAK LISTENERS
103:
104: // FIXME: this won't work with any external navigation system, such as CEC menus
105: // TODO: try by having CEC selection emulating RETURN and optionally accepting RETURN here
106: comboBox.setOnKeyPressed(event ->
107: {
108:• if (List.of(SPACE, ENTER).contains(event.getCode()))
109: {
110: comboBox.show();
111: }
112: });
113:
114: final var selectedProperty = comboBox.getSelectionModel().selectedItemProperty();
115: selectedProperty.removeListener(changeListener);
116: JavaFXWorker.run(executor,
117: () -> childrenPm(pm),
118: items -> finalize(comboBox, items, selectedProperty, callback));
119: }
120:
121: /***********************************************************************************************************************************************************
122: *
123: **********************************************************************************************************************************************************/
124: private void finalize (@Nonnull final ComboBox<PresentationModel> comboBox,
125: @Nonnull final ObservableList<PresentationModel> items,
126: @Nonnull final ReadOnlyObjectProperty<PresentationModel> selectedProperty,
127: @Nonnull final Optional<Runnable> callback)
128: {
129: comboBox.setItems(items);
130:
131:• if (!items.isEmpty())
132: {
133: comboBox.getSelectionModel().select(items.get(0));
134: }
135:
136: selectedProperty.addListener(changeListener);
137: callback.ifPresent(Runnable::run);
138: }
139: }