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
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/*
* Copyright (c) 2004 - 2012 Eike Stepper (Berlin, Germany) 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:
* Martin Fluegge - initial API and implementation
*/
package org.eclipse.emf.cdo.dawn.ui.stylizer;
import org.eclipse.emf.cdo.dawn.appearance.DawnElementStylizer;
import org.eclipse.emf.cdo.dawn.appearance.IDawnElementStylizerFactory;
import org.eclipse.emf.cdo.dawn.internal.ui.bundle.OM;
import org.eclipse.net4j.util.om.trace.ContextTracer;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.InvalidRegistryObjectException;
import org.eclipse.core.runtime.Platform;
import java.util.HashMap;
import java.util.Map;
/**
* This registry provides the DawnElementStylizer implementation for a given object.
*
* @see org.eclipse.emf.cdo.dawn.appearance.DawnElementStylizer
* @author Martin Fluegge
* @since 2.0
*/
public class DawnElementStylizerRegistry
{
private static final String ATTRIBUTE_PRIORITY = "priority";
private static final String ATTRIIBUTE_FACTORY = "factory";
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG, DawnElementStylizerRegistry.class);
private static final String DAWN_STYLIZER_FACTORY_EXTENSION_POINT_ID = "org.eclipse.emf.cdo.dawn.elementstylizerfactory";
public static DawnElementStylizerRegistry instance = new DawnElementStylizerRegistry();
private Map<String, DawnElementStylizer> registeredStylizers = new HashMap<String, DawnElementStylizer>();
private Map<String, FactoryContainer> stylizerFactories = new HashMap<String, FactoryContainer>();
private DawnDefaultElementStylizer dawnDefaultElementStylizer;
/**
* @since 2.0
*/
public DawnElementStylizer getStylizer(Object object)
{
DawnElementStylizer stylizer = registeredStylizers.get(object.getClass().getCanonicalName());
if (stylizer == null)
{
stylizer = getStylizerFromExtensionPoint(object);
registeredStylizers.put(object.getClass().getCanonicalName(), stylizer);
}
if (stylizer == null)
{
stylizer = getDefaultStylizer(object);
}
return stylizer;
}
private DawnElementStylizer getDefaultStylizer(Object object)
{
dawnDefaultElementStylizer = new DawnDefaultElementStylizer();
return dawnDefaultElementStylizer;
}
private DawnElementStylizer getStylizerFromExtensionPoint(Object object)
{
Map<String, FactoryContainer> factories = getFactories();
DawnElementStylizer elementStylizer = null;
int lastPriority = -1;
for (FactoryContainer factoryContainer : factories.values())
{
DawnElementStylizer currentElementStylizer = factoryContainer.getFactory().getElementStylizer(object);
if (currentElementStylizer != null)
{
int priority = factoryContainer.getPriority();
if (priority > lastPriority)
{
elementStylizer = currentElementStylizer;
lastPriority = priority;
}
}
}
return elementStylizer;
}
private Map<String, FactoryContainer> getFactories()
{
try
{
IConfigurationElement[] config = Platform.getExtensionRegistry().getConfigurationElementsFor(
DAWN_STYLIZER_FACTORY_EXTENSION_POINT_ID);
for (IConfigurationElement e : config)
{
String factoryClassName = e.getAttribute(ATTRIIBUTE_FACTORY);
if (!stylizerFactories.containsKey(factoryClassName))
{
IDawnElementStylizerFactory stylizer = (IDawnElementStylizerFactory)e
.createExecutableExtension(ATTRIIBUTE_FACTORY);
int priority = Integer.parseInt(e.getAttribute(ATTRIBUTE_PRIORITY).substring(0, 1));
FactoryContainer container = new FactoryContainer(priority, stylizer);
stylizerFactories.put(factoryClassName, container);
if (TRACER.isEnabled())
{
TRACER.format("Registered IDawnElementStylizerFactory {0} ", stylizer); //$NON-NLS-1$
}
}
}
}
catch (InvalidRegistryObjectException e)
{
e.printStackTrace();
}
catch (CoreException e)
{
e.printStackTrace();
}
return stylizerFactories;
}
private class FactoryContainer
{
private int priority;
private IDawnElementStylizerFactory factory;
public FactoryContainer(int priority, IDawnElementStylizerFactory factory)
{
this.priority = priority;
this.factory = factory;
}
public IDawnElementStylizerFactory getFactory()
{
return factory;
}
public int getPriority()
{
return priority;
}
}
}
|
