blob: 89944fb780bb3eb9a2bd05b39b89ff07b83e15e9 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
/*******************************************************************************
* Copyright (c) 2016-2017 Red Hat Inc. and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* - Mickael Istria (Red Hat Inc.)
*******************************************************************************/
package org.eclipse.ui.internal.genericeditor;
import java.util.List;
import org.eclipse.core.runtime.Assert;
import org.eclipse.jface.text.IInformationControlCreator;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.ITextHover;
import org.eclipse.jface.text.ITextHoverExtension;
import org.eclipse.jface.text.ITextHoverExtension2;
import org.eclipse.jface.text.ITextViewer;
/**
* A text hover that delegates its operations to children
* provided in constructor and returns the first interesting result.
*
* @since 1.0
*/
public class CompositeTextHover implements ITextHover, ITextHoverExtension, ITextHoverExtension2 {
private List<ITextHover> hoversToConsider;
private ITextHover currentHover = null;
public CompositeTextHover(List<ITextHover> hoversToConsider) {
Assert.isNotNull(hoversToConsider);
this.hoversToConsider = hoversToConsider;
}
@Override
public Object getHoverInfo2(ITextViewer textViewer, IRegion hoverRegion) {
for (ITextHover hover : this.hoversToConsider) {
Object res = null;
if (hover instanceof ITextHoverExtension2) {
res = ((ITextHoverExtension2)hover).getHoverInfo2(textViewer, hoverRegion);
} else {
res = hover.getHoverInfo(textViewer, hoverRegion);
}
if (res != null) {
currentHover = hover;
return res;
}
}
return null;
}
@Override
public IInformationControlCreator getHoverControlCreator() {
ITextHover hover = this.currentHover;
if (hover != null) {
if (hover instanceof ITextHoverExtension) {
return ((ITextHoverExtension)hover).getHoverControlCreator();
}
}
return null;
}
@Override
public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) {
for (ITextHover hover : this.hoversToConsider) {
String res = hover.getHoverInfo(textViewer, hoverRegion);
if (res != null) {
currentHover = hover;
return res;
}
}
return null;
}
@Override
public IRegion getHoverRegion(ITextViewer textViewer, int offset) {
for (ITextHover hover : this.hoversToConsider) {
IRegion res = hover.getHoverRegion(textViewer, offset);
if (res != null) {
return res;
}
}
return null;
}
}
|
