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1
11 package org.eclipse.compare.internal;
12
13 import org.eclipse.compare.*;
14 import org.eclipse.compare.contentmergeviewer.IMergeViewerContentProvider;
15 import org.eclipse.compare.structuremergeviewer.*;
16 import org.eclipse.jface.viewers.Viewer;
17 import org.eclipse.swt.graphics.Image;
18
19
23 public class MergeViewerContentProvider implements IMergeViewerContentProvider {
24
25 public static final char ANCESTOR_CONTRIBUTOR = 'A';
26 public static final char RIGHT_CONTRIBUTOR = 'R';
27 public static final char LEFT_CONTRIBUTOR = 'L';
28
29 private CompareConfiguration fCompareConfiguration;
30 private String  fAncestorError;
31 private String fLeftError;
32 private String fRightError;
33
34 public MergeViewerContentProvider(CompareConfiguration cc) {
35 fCompareConfiguration= cc;
36 }
37
38 private boolean hasError() {
39 return fAncestorError != null || fLeftError != null || fRightError != null;
40 }
41
42 public void dispose() {
43 }
45
46 public void inputChanged(Viewer v, Object o1, Object o2) {
47 }
49
50
52 public void setAncestorError(String errorMessage) {
53 fAncestorError= errorMessage;
54 }
55
56 public String getAncestorLabel(Object element) {
57 if (fAncestorError != null)
58 return fAncestorError;
59 return fCompareConfiguration.getAncestorLabel(element);
60 }
61
62 public Image getAncestorImage(Object element) {
63 if (fAncestorError != null)
64 return null;
65 return fCompareConfiguration.getAncestorImage(element);
66 }
67
68 public Object getAncestorContent(Object element) {
69 if (element instanceof ICompareInput)
70 return ((ICompareInput) element).getAncestor();
71 return null;
72 }
73
74 public boolean showAncestor(Object element) {
75 if (element instanceof ICompareInput)
76 return true; return false;
79 }
80
81
83 public void setLeftError(String errorMessage) {
84 fLeftError= errorMessage;
85 }
86
87 public String getLeftLabel(Object element) {
88 if (fLeftError != null)
89 return fLeftError;
90 return fCompareConfiguration.getLeftLabel(element);
91 }
92
93 public Image getLeftImage(Object element) {
94 if (fLeftError != null)
95 return null;
96 return fCompareConfiguration.getLeftImage(element);
97 }
98
99 public Object getLeftContent(Object element) {
100 if (element instanceof ICompareInput)
101 return ((ICompareInput) element).getLeft();
102 return null;
103 }
104
105 public boolean isLeftEditable(Object element) {
106 if (hasError())
107 return false;
108 if (element instanceof ICompareInput) {
109 Object left= ((ICompareInput) element).getLeft();
110 if (left == null && element instanceof IDiffElement) {
111 IDiffElement parent= ((IDiffElement)element).getParent();
112 if (parent instanceof ICompareInput)
113 left= ((ICompareInput) parent).getLeft();
114 }
115 if (left instanceof IEditableContent)
116 return ((IEditableContent)left).isEditable();
117 }
118 return false;
119 }
120
121 public void saveLeftContent(Object element, byte[] bytes) {
122 if (element instanceof ICompareInput) {
123 ICompareInput node= (ICompareInput) element;
124 if (bytes != null) {
125 ITypedElement left= node.getLeft();
126 if (left == null) {
128 node.copy(false);
129 left= node.getLeft();
130 }
131 if (left instanceof IEditableContent)
132 ((IEditableContent)left).setContent(bytes);
133 if (node instanceof ResourceCompareInput.MyDiffNode)
134 ((ResourceCompareInput.MyDiffNode)node).fireChange();
135 } else {
136 node.copy(false);
137 }
138 }
139 }
140
141
143 public void setRightError(String errorMessage) {
144 fRightError= errorMessage;
145 }
146
147 public String getRightLabel(Object element) {
148 if (fRightError != null)
149 return fRightError;
150 return fCompareConfiguration.getRightLabel(element);
151 }
152
153 public Image getRightImage(Object element) {
154 if (fRightError != null)
155 return null;
156 return fCompareConfiguration.getRightImage(element);
157 }
158
159 public Object getRightContent(Object element) {
160 if (element instanceof ICompareInput)
161 return ((ICompareInput) element).getRight();
162 return null;
163 }
164
165 public boolean isRightEditable(Object element) {
166 if (hasError())
167 return false;
168 if (element instanceof ICompareInput) {
169 Object right= ((ICompareInput) element).getRight();
170 if (right == null && element instanceof IDiffElement) {
171 IDiffContainer parent= ((IDiffElement)element).getParent();
172 if (parent instanceof ICompareInput)
173 right= ((ICompareInput) parent).getRight();
174 }
175 if (right instanceof IEditableContent)
176 return ((IEditableContent)right).isEditable();
177 }
178 return false;
179 }
180
181 public void saveRightContent(Object element, byte[] bytes) {
182 if (element instanceof ICompareInput) {
183 ICompareInput node= (ICompareInput) element;
184 if (bytes != null) {
185 ITypedElement right= node.getRight();
186 if (right == null) {
188 node.copy(true);
189 right= node.getRight();
190 }
191 if (right instanceof IEditableContent)
192 ((IEditableContent)right).setContent(bytes);
193 if (node instanceof ResourceCompareInput.MyDiffNode)
194 ((ResourceCompareInput.MyDiffNode)node).fireChange();
195 } else {
196 node.copy(true);
197 }
198 }
199 }
200 }
201
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