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Package: SimplePostSelectionProvider
SimplePostSelectionProvider
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| SimplePostSelectionProvider() |
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| addPostSelectionChangedListener(ISelectionChangedListener) |
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| addSelectionChangedListener(ISelectionChangedListener) |
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| firePostSelection() |
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| fireSelection() |
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| getSelection() |
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| lambda$0(SelectionChangedEvent, ISelectionChangedListener) |
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| lambda$1(SelectionChangedEvent, ISelectionChangedListener) |
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| removePostSelectionChangedListener(ISelectionChangedListener) |
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| removeSelectionChangedListener(ISelectionChangedListener) |
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| select(Object) |
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| select(Object, boolean, boolean) |
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| setSelection(ISelection) |
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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.ui.view.spi.swt.selection.test;
15:
16: import java.util.ArrayList;
17: import java.util.List;
18: import java.util.Objects;
19:
20: import org.eclipse.jface.viewers.IPostSelectionProvider;
21: import org.eclipse.jface.viewers.ISelection;
22: import org.eclipse.jface.viewers.ISelectionChangedListener;
23: import org.eclipse.jface.viewers.IStructuredSelection;
24: import org.eclipse.jface.viewers.SelectionChangedEvent;
25: import org.eclipse.jface.viewers.StructuredSelection;
26:
27: /**
28: * A simple selection-provider to drive tests that need a selection provider.
29: */
30: class SimplePostSelectionProvider implements IPostSelectionProvider {
31:
32: private Object selection;
33:
34: private final List<ISelectionChangedListener> listeners = new ArrayList<ISelectionChangedListener>(3);
35: private final List<ISelectionChangedListener> postListeners = new ArrayList<ISelectionChangedListener>(3);
36:
37: /**
38: * Initializes me.
39: */
40: SimplePostSelectionProvider() {
41: super();
42: }
43:
44: @Override
45: public ISelection getSelection() {
46:• return selection == null ? StructuredSelection.EMPTY : new StructuredSelection(selection);
47: }
48:
49: @Override
50: public void setSelection(ISelection selection) {
51: Object newSelection = null;
52:
53:• if (!selection.isEmpty() && selection instanceof IStructuredSelection) {
54: newSelection = ((IStructuredSelection) selection).getFirstElement();
55: }
56:
57:• if (!Objects.equals(newSelection, this.selection)) {
58: select(newSelection);
59: }
60: }
61:
62: void select(Object selection) {
63: select(selection, true, true);
64: }
65:
66: void select(Object selection, boolean notify, boolean notifyPost) {
67: this.selection = selection;
68:
69:• if (notify) {
70: fireSelection();
71: }
72:• if (notifyPost) {
73: firePostSelection();
74: }
75: }
76:
77: @Override
78: public void addSelectionChangedListener(ISelectionChangedListener listener) {
79: listeners.add(listener);
80: }
81:
82: @Override
83: public void removeSelectionChangedListener(ISelectionChangedListener listener) {
84: listeners.remove(listener);
85: }
86:
87: @Override
88: public void addPostSelectionChangedListener(ISelectionChangedListener listener) {
89: postListeners.add(listener);
90: }
91:
92: @Override
93: public void removePostSelectionChangedListener(ISelectionChangedListener listener) {
94: postListeners.remove(listener);
95: }
96:
97: private void fireSelection() {
98: final SelectionChangedEvent event = new SelectionChangedEvent(this, getSelection());
99: listeners.forEach(l -> l.selectionChanged(event));
100: }
101:
102: private void firePostSelection() {
103: final SelectionChangedEvent event = new SelectionChangedEvent(this, getSelection());
104: postListeners.forEach(l -> l.selectionChanged(event));
105: }
106:
107: }