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Package: TreeItemDelegateSupport
TreeItemDelegateSupport
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| TreeItemDelegateSupport(Executor, Supplier) |
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| bindSelectionListener(ReadOnlyObjectProperty) |
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| createTreeItem(PresentationModel, int) |
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| createTreeItems(ObservableList, int) |
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| lambda$createTreeItem$3(TreeItem, int) |
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| lambda$createTreeItem$4(TreeItem, int, PropertyChangeEvent) |
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| lambda$createTreeItem$5(TreeItem, int, ObservableValue, Boolean, Boolean) |
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| lambda$createTreeItems$2(int, PresentationModel) |
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| lambda$setChildren$0(TreeItem, int) |
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| lambda$setChildren$1(TreeItem, int, ObservableList) |
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| setChildren(TreeItem, int) |
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| setRootProperty(PresentationModel, ObjectProperty) |
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| shouldShowRoot(PresentationModel) |
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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 - 2025 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.ui.javafx.impl.common;
27:
28: import jakarta.annotation.Nonnull;
29: import java.beans.PropertyChangeListener;
30: import java.util.List;
31: import java.util.concurrent.Executor;
32: import java.util.function.Supplier;
33: import javafx.beans.property.ObjectProperty;
34: import javafx.beans.property.ReadOnlyObjectProperty;
35: import javafx.collections.ObservableList;
36: import javafx.scene.control.TreeItem;
37: import javafx.stage.Window;
38: import javafx.application.Platform;
39: import it.tidalwave.ui.core.role.PresentationModel;
40: import it.tidalwave.ui.core.role.Visibility;
41: import it.tidalwave.ui.javafx.impl.tree.ObsoletePresentationModelDisposer;
42: import lombok.Getter;
43: import lombok.extern.slf4j.Slf4j;
44: import static it.tidalwave.ui.core.role.Visibility._Visibility_;
45: import static it.tidalwave.ui.javafx.impl.DefaultJavaFXBinder.enforceFxApplicationThread;
46: import static it.tidalwave.ui.javafx.impl.common.JavaFXWorker.childrenPm;
47: import static java.util.stream.Collectors.*;
48:
49: /***************************************************************************************************************************************************************
50: *
51: * Some common stuff for both {@code TreeView} and {@code TreeTableView}.
52: *
53: * @author Fabrizio Giudici
54: *
55: **************************************************************************************************************************************************************/
56: @Slf4j
57: public class TreeItemDelegateSupport extends DelegateSupport
58: {
59: @Getter // for testing
60: private final ChangeListenerSelectableAdapter selectionListener = new ChangeListenerSelectableAdapter(executor);
61:
62: private final ObsoletePresentationModelDisposer presentationModelDisposer = new ObsoletePresentationModelDisposer();
63:
64: /***********************************************************************************************************************************************************
65: *
66: **********************************************************************************************************************************************************/
67: public TreeItemDelegateSupport (@Nonnull final Executor executor, @Nonnull final Supplier<Window> mainWindow)
68: {
69: super(executor, mainWindow);
70: }
71:
72: /***********************************************************************************************************************************************************
73: * Sets the children for a {@link TreeItem}.
74: * @param parentItem the {@code TreeItem}
75: * @param depth the depth level (used only for logging)
76: **********************************************************************************************************************************************************/
77: private void setChildren (@Nonnull final TreeItem<PresentationModel> parentItem, final int depth)
78: {
79: JavaFXWorker.run(executor,
80: () -> childrenPm(parentItem.getValue(), depth),
81: items -> parentItem.getChildren().setAll(createTreeItems(items, depth)));
82: }
83:
84: /***********************************************************************************************************************************************************
85: * {@return a list of {@link TreeItem}s populated with the given items}.
86: * @param depth the depth level (used only for logging)
87: **********************************************************************************************************************************************************/
88: @Nonnull
89: private List<TreeItem<PresentationModel>> createTreeItems (@Nonnull final ObservableList<PresentationModel> items, final int depth)
90: {
91: enforceFxApplicationThread();
92: return items.stream().map(childPm -> createTreeItem(childPm, depth)).collect(toList());
93: }
94:
95: /***********************************************************************************************************************************************************
96: * Creates a single {@link TreeItem} for the given the {@link PresentationModel}. When the {@code PresentationModel} fires the
97: * {@link PresentationModel#PROPERTY_CHILDREN} property change event, children are recreated.
98: * @param pm the {@code PresentationModel}
99: * @param depth the depth level (used only for logging)
100: * @return the
101: **********************************************************************************************************************************************************/
102: @Nonnull
103: private TreeItem<PresentationModel> createTreeItem (@Nonnull final PresentationModel pm, final int depth)
104: {
105: enforceFxApplicationThread();
106: final TreeItem<PresentationModel> item = new PresentationModelTreeItem(pm);
107:
108: final PropertyChangeListener recreateChildrenOnUpdateListener = ignored -> Platform.runLater(() ->
109: {
110: log.debug("On recreateChildrenOnUpdateListener");
111: setChildren(item, depth + 1);
112: item.setExpanded(true);
113: });
114:
115: pm.addPropertyChangeListener(PresentationModel.PROPERTY_CHILDREN, recreateChildrenOnUpdateListener);
116:
117: item.expandedProperty().addListener((observable, oldValue, newValue) ->
118: {
119:• if (newValue)
120: {
121: setChildren(item, depth + 1);
122: }
123: });
124:
125: return item;
126: }
127:
128: /***********************************************************************************************************************************************************
129: *
130: **********************************************************************************************************************************************************/
131: protected void setRootProperty (@Nonnull final PresentationModel pm, @Nonnull final ObjectProperty<TreeItem<PresentationModel>> rootProperty)
132: {
133: rootProperty.removeListener(presentationModelDisposer);
134: rootProperty.addListener(presentationModelDisposer);
135: rootProperty.set(createTreeItem(pm, 0));
136: }
137:
138: /***********************************************************************************************************************************************************
139: *
140: **********************************************************************************************************************************************************/
141: protected void bindSelectionListener (@Nonnull final ReadOnlyObjectProperty<TreeItem<PresentationModel>> selectedItemProperty)
142: {
143: selectedItemProperty.removeListener(selectionListener.asTreeItemChangeListener());
144: selectedItemProperty.addListener(selectionListener.asTreeItemChangeListener());
145: }
146:
147: /***********************************************************************************************************************************************************
148: *
149: **********************************************************************************************************************************************************/
150: protected static Boolean shouldShowRoot (@Nonnull final PresentationModel pm)
151: {
152: return pm.maybeAs(_Visibility_).map(Visibility::isVisible).orElse(true);
153: }
154: }