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Package: TableDetailRevealProvider
TableDetailRevealProvider
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| TableDetailRevealProvider() |
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| canReveal(VTableControl, EObject, EStructuralFeature, ViewModelContext) |
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| containsRecursively(ViewModelContext, VTableControl, EObject) |
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| getParent(ViewModelContext, VTableControl, EObject) |
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| getTableInput(ViewModelContext, VTableControl) |
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| lambda$2(EObject, EObject) |
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| lambda$5(EObject, EObject) |
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| lambda$6(TableControlSWTRenderer, EObject) |
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| reveal(ViewModelContext, RevealHelper, VTableControl, EObject) |
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| revealMaster(TableControlSWTRenderer, EObject) |
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Coverage
1: /*******************************************************************************
2: * Copyright (c) 2019 Christian W. Damus and others.
3: *
4: * All rights reserved. This program and the accompanying materials
5: * are made available under the terms of the Eclipse Public License 2.0
6: * which accompanies this distribution, and is available at
7: * https://www.eclipse.org/legal/epl-2.0/
8: *
9: * SPDX-License-Identifier: EPL-2.0
10: *
11: * Contributors:
12: * Christian W. Damus - initial API and implementation
13: ******************************************************************************/
14: package org.eclipse.emf.ecp.view.internal.table.swt;
15:
16: import org.eclipse.core.databinding.observable.Observables;
17: import org.eclipse.core.databinding.observable.list.IObservableList;
18: import org.eclipse.e4.core.di.annotations.Optional;
19: import org.eclipse.emf.ecore.EObject;
20: import org.eclipse.emf.ecore.EStructuralFeature;
21: import org.eclipse.emf.ecore.util.EcoreUtil;
22: import org.eclipse.emf.ecp.view.model.common.di.annotations.Renderer;
23: import org.eclipse.emf.ecp.view.spi.context.ViewModelContext;
24: import org.eclipse.emf.ecp.view.spi.table.model.DetailEditing;
25: import org.eclipse.emf.ecp.view.spi.table.model.VTableControl;
26: import org.eclipse.emf.ecp.view.spi.table.swt.TableControlSWTRenderer;
27: import org.eclipse.emfforms.bazaar.Bid;
28: import org.eclipse.emfforms.bazaar.Create;
29: import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException;
30: import org.eclipse.emfforms.spi.core.services.databinding.EMFFormsDatabinding;
31: import org.eclipse.emfforms.spi.core.services.reveal.DrillUp;
32: import org.eclipse.emfforms.spi.core.services.reveal.EMFFormsRevealProvider;
33: import org.eclipse.emfforms.spi.core.services.reveal.Reveal;
34: import org.eclipse.emfforms.spi.core.services.reveal.RevealHelper;
35: import org.eclipse.emfforms.spi.core.services.reveal.RevealStep;
36: import org.osgi.service.component.annotations.Component;
37:
38: /**
39: * A reveal provider for {@link VTableControl}s that reveals objects presented in the details
40: * of some object in the table. This is a heuristic guess based on containment (recursively)
41: * of the object to be revealed within some object in the table. Applications are advised
42: * to provide higher bids to more reliably/appropriately reveal objects in these master-detail
43: * configurations.
44: *
45: * @since 1.22
46: */
47: @Component(name = "tableDetailRevealProvider")
48: public class TableDetailRevealProvider implements EMFFormsRevealProvider {
49:
50: private final Double featureBid = 11.0;
51: private final Double tableBid = 1.0;
52:
53: /**
54: * I bid on the {@code element} if it is a {@link VTableControl} that has a row
55: * representing an {@link EObject} containing (recursively) the {@code object}
56: * to be revealed and the table control has a detail panel.
57: *
58: * @param tableControl the table control to bid on
59: * @param object the object to be revealed
60: * @param feature provider of the optional feature being revealed
61: * @param context the context in which the table is rendered
62: *
63: * @return my bid
64: */
65: @Bid
66: public Double canReveal(VTableControl tableControl, EObject object,
67: @Optional EStructuralFeature feature, ViewModelContext context) {
68:
69:• return tableControl.getDetailEditing() == DetailEditing.WITH_PANEL
70:• && containsRecursively(context, tableControl, object)
71:• ? feature != null
72: ? featureBid // Expect that we can reveal this property of the object
73: : tableBid
74: : null;
75: }
76:
77: private boolean containsRecursively(ViewModelContext context, VTableControl tableControl, EObject object) {
78: boolean result;
79:
80: final IObservableList<?> list = getTableInput(context, tableControl);
81: result = list.stream().filter(EObject.class::isInstance).map(EObject.class::cast)
82: .anyMatch(ancestor -> EcoreUtil.isAncestor(ancestor, object));
83:
84: return result;
85: }
86:
87: private IObservableList<?> getTableInput(ViewModelContext context, VTableControl tableControl) {
88: IObservableList<?> result = Observables.emptyObservableList();
89:
90: try {
91: result = context.getService(EMFFormsDatabinding.class)
92: .getObservableList(tableControl.getDomainModelReference(), context.getDomainModel());
93: } catch (final DatabindingFailedException e) {
94: // The object cannot be in this table, then
95: }
96:
97: return result;
98: }
99:
100: /**
101: * Create a reveal step to drill down into the table's details.
102: *
103: * @param context the view model context in which to find a renderer for the table
104: * @param helper a helper for deferred revealing
105: * @param tableControl the table in which to drill down
106: * @param object the object to reveal
107: * @return the drill-down reveal step
108: */
109: @Create
110: public RevealStep reveal(ViewModelContext context, RevealHelper helper, VTableControl tableControl,
111: EObject object) {
112:
113: RevealStep result = RevealStep.fail();
114:
115:• if (containsRecursively(context, tableControl, object)) {
116: // It's in this table. Defer the access to the renderer because
117: // in a categorization it may not yet exist
118: result = helper.masterDetail(this, this);
119: }
120:
121: return result;
122: }
123:
124: @DrillUp
125: private EObject getParent(ViewModelContext context, VTableControl tableControl, EObject object) {
126: EObject result = null;
127:
128: final IObservableList<?> list = getTableInput(context, tableControl);
129: result = list.stream().filter(EObject.class::isInstance).map(EObject.class::cast)
130: .filter(ancestor -> EcoreUtil.isAncestor(ancestor, object))
131: .findAny().orElse(null);
132:
133: return result;
134: }
135:
136: @Reveal
137: private RevealStep revealMaster(@Renderer TableControlSWTRenderer renderer, EObject masterSelection) {
138: final VTableControl tableControl = renderer.getVElement();
139: return RevealStep.reveal(tableControl, masterSelection, () -> renderer.reveal(masterSelection));
140: }
141:
142: }