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1
11 package org.eclipse.jdt.internal.ui.wizards.buildpaths;
12
13 import java.io.File  ;
14
15 import org.eclipse.core.runtime.IStatus;
16
17 import org.eclipse.swt.graphics.Image;
18 import org.eclipse.swt.widgets.Shell;
19
20 import org.eclipse.jface.viewers.ITreeContentProvider;
21 import org.eclipse.jface.viewers.LabelProvider;
22 import org.eclipse.jface.viewers.Viewer;
23 import org.eclipse.jface.viewers.ViewerComparator;
24 import org.eclipse.jface.viewers.ViewerFilter;
25
26 import org.eclipse.ui.ISharedImages;
27 import org.eclipse.ui.PlatformUI;
28 import org.eclipse.ui.dialogs.ElementTreeSelectionDialog;
29 import org.eclipse.ui.dialogs.ISelectionStatusValidator;
30
31 import org.eclipse.jdt.internal.ui.JavaPlugin;
32 import org.eclipse.jdt.internal.ui.JavaPluginImages;
33 import org.eclipse.jdt.internal.ui.dialogs.StatusInfo;
34
35
39 public class JARFileSelectionDialog extends ElementTreeSelectionDialog {
40
41
47 public JARFileSelectionDialog(Shell parent, boolean multiSelect, boolean acceptFolders) {
48 super(parent, new FileLabelProvider(), new FileContentProvider());
49 setComparator(new FileViewerComparator());
50 addFilter(new FileArchiveFileFilter(acceptFolders));
51 setValidator(new FileSelectionValidator(multiSelect, acceptFolders));
52 setHelpAvailable(false);
53 }
54
55 private static boolean isArchive(File file) {
56 String name= file.getName();
57 int detIndex= name.lastIndexOf('.');
58 return (detIndex != -1 && ArchiveFileFilter.isArchiveFileExtension(name.substring(detIndex + 1)));
59 }
60
61 private static class FileLabelProvider extends LabelProvider {
62 private final Image IMG_FOLDER= PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_FOLDER);
63 private final Image IMG_JAR= JavaPlugin.getDefault().getImageRegistry().get(JavaPluginImages.IMG_OBJS_EXTJAR);
64
65 public Image getImage(Object element) {
66 if (element instanceof File ) {
67 File curr= (File ) element;
68 if (curr.isDirectory()) {
69 return IMG_FOLDER;
70 } else {
71 return IMG_JAR;
72 }
73 }
74 return null;
75 }
76
77 public String getText(Object element) {
78 if (element instanceof File ) {
79 return ((File ) element).getName();
80 }
81 return super.getText(element);
82 }
83 }
84
85 private static class FileContentProvider implements ITreeContentProvider {
86
87 private final Object [] EMPTY= new Object [0];
88
89 public Object [] getChildren(Object parentElement) {
90 if (parentElement instanceof File ) {
91 File [] children= ((File ) parentElement).listFiles();
92 if (children != null) {
93 return children;
94 }
95 }
96 return EMPTY;
97 }
98
99 public Object getParent(Object element) {
100 if (element instanceof File ) {
101 return ((File ) element).getParentFile();
102 }
103 return null;
104 }
105
106 public boolean hasChildren(Object element) {
107 return getChildren(element).length > 0;
108 }
109
110 public Object [] getElements(Object element) {
111 return getChildren(element);
112 }
113
114 public void dispose() {
115 }
116
117 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
118 }
119
120 }
121
122 private static class FileArchiveFileFilter extends ViewerFilter {
123 private final boolean fAcceptFolders;
124
125 public FileArchiveFileFilter(boolean acceptFolders) {
126 fAcceptFolders= acceptFolders;
127 }
128
129 public boolean select(Viewer viewer, Object parent, Object element) {
130 if (element instanceof File ) {
131 File file= (File ) element;
132 if (file.isFile()) {
133 return isArchive(file);
134 } else if (fAcceptFolders) {
135 return true;
136 } else {
137 File [] listFiles= file.listFiles();
138 if (listFiles != null) {
139 for (int i= 0; i < listFiles.length; i++) {
140 if (select(viewer, file, listFiles[i])) {
141 return true;
142 }
143 }
144 }
145 }
146 }
147 return false;
148 }
149 }
150
151 private static class FileViewerComparator extends ViewerComparator {
152 public int category(Object element) {
153 if (element instanceof File ) {
154 if (((File ) element).isFile()) {
155 return 1;
156 }
157 }
158 return 0;
159 }
160 }
161
162 private static class FileSelectionValidator implements ISelectionStatusValidator {
163 private boolean fMultiSelect;
164 private boolean fAcceptFolders;
165
166 public FileSelectionValidator(boolean multiSelect, boolean acceptFolders) {
167 fMultiSelect= multiSelect;
168 fAcceptFolders= acceptFolders;
169 }
170
171 public IStatus validate(Object [] selection) {
172 int nSelected= selection.length;
173 if (nSelected == 0 || (nSelected > 1 && !fMultiSelect)) {
174 return new StatusInfo(IStatus.ERROR, ""); }
176 for (int i= 0; i < selection.length; i++) {
177 Object curr= selection[i];
178 if (curr instanceof File ) {
179 File file= (File ) curr;
180 if (!fAcceptFolders && !file.isFile()) {
181 return new StatusInfo(IStatus.ERROR, ""); }
183 }
184 }
185 return new StatusInfo();
186 }
187 }
188
189
190 }
191 |
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