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annotate dbus-d-javatests/jsrc/testapp/FileBrowserSample.java @ 0:a5576806d36d

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recreate repository without any libs for lightweight repository
author Frank Benoit <benoit@tionex.de>
date Sat, 20 Oct 2007 18:07:18 +0200
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children 65fb7ef02c50
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1 /*******************************************************************************
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2 * All Right Reserved. Copyright (c) 1998, 2004 Jackwind Li Guojie
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3 *
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4 * Created on Mar 9, 2004 7:07:16 PM by JACK $Id$
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5 *
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6 ******************************************************************************/
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7
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8 package testapp;
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9
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10 import java.io.File;
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11
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12 import org.eclipse.jface.action.Action;
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13 import org.eclipse.jface.action.ToolBarManager;
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14 import org.eclipse.jface.resource.ImageRegistry;
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15 import org.eclipse.swt.SWT;
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16 import org.eclipse.swt.custom.TreeEditor;
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17 import org.eclipse.swt.events.SelectionEvent;
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18 import org.eclipse.swt.events.SelectionListener;
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19 import org.eclipse.swt.events.TreeEvent;
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20 import org.eclipse.swt.events.TreeListener;
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21 import org.eclipse.swt.graphics.Image;
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22 import org.eclipse.swt.graphics.ImageData;
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23 import org.eclipse.swt.graphics.Point;
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24 import org.eclipse.swt.layout.GridData;
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25 import org.eclipse.swt.layout.GridLayout;
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26 import org.eclipse.swt.program.Program;
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27 import org.eclipse.swt.widgets.DirectoryDialog;
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28 import org.eclipse.swt.widgets.Display;
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29 import org.eclipse.swt.widgets.Event;
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30 import org.eclipse.swt.widgets.Listener;
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31 import org.eclipse.swt.widgets.Shell;
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32 import org.eclipse.swt.widgets.Text;
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33 import org.eclipse.swt.widgets.ToolBar;
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34 import org.eclipse.swt.widgets.Tree;
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35 import org.eclipse.swt.widgets.TreeItem;
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36
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37 public class FileBrowserSample {
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38 Display display = new Display();
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39 Shell shell = new Shell(display);
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40
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41 Tree tree;
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42
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43 File rootDir;
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44
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45 public FileBrowserSample() {
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46 Action actionSetRootDir = new Action("Set Root Dir") {
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47 public void run() {
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48 DirectoryDialog dialog = new DirectoryDialog(shell);
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49 String path = dialog.open();
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50 if (path != null) {
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51 setRootDir(new File(path));
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52 }
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53 }
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54 };
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55
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56
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57 ToolBar toolBar = new ToolBar(shell, SWT.FLAT);
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58 ToolBarManager manager = new ToolBarManager(toolBar);
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59 manager.add(actionSetRootDir);
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60
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61 manager.update(true);
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62
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63 shell.setLayout(new GridLayout());
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64
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65 tree = new Tree(shell, SWT.BORDER);
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66 tree.setLayoutData(new GridData(GridData.FILL_BOTH));
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67
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68 setRootDir(new File("C:/"));
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69
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70 tree.addTreeListener(new TreeListener() {
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71 public void treeCollapsed(TreeEvent e) {
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72 }
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73
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74 public void treeExpanded(TreeEvent e) {
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75 TreeItem item = (TreeItem) e.item;
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76 TreeItem[] children = item.getItems();
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77
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78 for (int i = 0; i < children.length; i++)
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79 if (children[i].getData() == null)
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80 children[i].dispose();
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81 else // Child files already added to the tree.
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82 return;
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83
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84 File[] files = ((File) item.getData()).listFiles();
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85 for (int i = 0; files != null && i < files.length; i++)
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86 addFileToTree(item, files[i]);
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87 }
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88 });
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89
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90 tree.addSelectionListener(new SelectionListener() {
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91 public void widgetSelected(SelectionEvent e) {
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92 }
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93 // Gets called when a tree item is double-clicked.
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94 public void widgetDefaultSelected(SelectionEvent e) {
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95 TreeItem item = (TreeItem) e.item;
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96 File file = (File) item.getData();
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97 if (Program.launch(file.getAbsolutePath())) {
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98 System.out.println("File has been launched: " + file);
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99 } else {
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100 System.out.println("Unable to launch file: " + file);
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101 }
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102 }
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103 });
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104
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105 shell.setSize(400, 260);
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106 shell.open();
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107 //textUser.forceFocus();
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108
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109 // Set up the event loop.
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110 while (!shell.isDisposed()) {
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111 if (!display.readAndDispatch()) {
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112 // If no more entries in event queue
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113 display.sleep();
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114 }
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115 }
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116
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117 display.dispose();
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118 }
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119
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120 /**
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121 * Sets the root directory to browse from.
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122 *
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123 * @param root
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124 */
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125 private void setRootDir(File root) {
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126 // validates the root first.
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127 if( (!root.isDirectory()) || (!root.exists()))
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128 throw new IllegalArgumentException("Invalid root: " + root);
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129
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130 this.rootDir = root;
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131 shell.setText("Now browsing: " + root.getAbsolutePath());
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132
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133 // Remove all the items in the tree.
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134 if (tree.getItemCount() > 0) {
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135 TreeItem[] items = tree.getItems();
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136 for (int i = 0; i < items.length; i++) {
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137 items[i].dispose();
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138 // Dispose itself and all of its descendants.
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139 }
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140 }
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141
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142 // Adds files under the root to the tree.
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143 File[] files = root.listFiles();
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144 for(int i=0; files != null && i < files.length; i++)
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145 addFileToTree(tree, files[i]);
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146 }
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147
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148 /**
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149 * Adds the given file to the tree.
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150 *
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151 * @param parent
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152 * @param file
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153 */
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154 private void addFileToTree(Object parent, File file) {
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155 TreeItem item = null;
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156
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157 if (parent instanceof Tree)
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158 item = new TreeItem((Tree) parent, SWT.NULL);
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159 else if (parent instanceof TreeItem)
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160 item = new TreeItem((TreeItem) parent, SWT.NULL);
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161 else
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162 throw new IllegalArgumentException(
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163 "parent should be a tree or a tree item: " + parent);
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164
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165 item.setText(file.getName());
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166 item.setImage(getIcon(file));
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167
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168 item.setData(file);
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169
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170 if (file.isDirectory()) {
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171 // // recursively adds all the children of this file.
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172 // File[] files = file.listFiles();
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173 // for(int i=0; i<files.length; i++)
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174 // buildTree(item, files[i]);
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175 if (file.list() != null && file.list().length > 0)
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176 new TreeItem(item, SWT.NULL);
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177 }
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178 }
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179
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180 private ImageRegistry imageRegistry;
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181 Image iconFolder = new Image(shell.getDisplay(), "icons/java2s.gif");
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182 Image iconFile = new Image(shell.getDisplay(), "icons/java2s.gif");
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183
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184 /**
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185 * Returns an icon representing the specified file.
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186 *
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187 * @param file
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188 * @return
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189 */
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190 private Image getIcon(File file) {
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191 if (file.isDirectory())
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192 return iconFolder;
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193
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194 int lastDotPos = file.getName().indexOf('.');
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195 if (lastDotPos == -1)
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196 return iconFile;
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197
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198 Image image = getIcon(file.getName().substring(lastDotPos + 1));
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199 return image == null ? iconFile : image;
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200 }
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201
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202 /**
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203 * Returns the icon for the file type with the specified extension.
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204 *
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205 * @param extension
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206 * @return
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207 */
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208 private Image getIcon(String extension) {
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209 if (imageRegistry == null)
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210 imageRegistry = new ImageRegistry();
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211 Image image = imageRegistry.get(extension);
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212 if (image != null)
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213 return image;
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214
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215 Program program = Program.findProgram(extension);
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216 ImageData imageData = (program == null ? null : program.getImageData());
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217 if (imageData != null) {
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218 image = new Image(shell.getDisplay(), imageData);
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219 imageRegistry.put(extension, image);
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220 } else {
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221 image = iconFile;
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222 }
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223
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224 return image;
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225 }
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226
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227 public static void main(String[] args) {
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228 new FileBrowserSample();
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229 }
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230 }
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231