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annotate org.eclipse.jface/src/org/eclipse/jface/resource/FileImageDescriptor.d @ 20:dccb717aa902

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Remove more tango imports
author Frank Benoit <benoit@tionex.de>
date Wed, 18 Mar 2009 12:10:17 +0100
parents 6f068362a363
children
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2008 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module org.eclipse.jface.resource.FileImageDescriptor;
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15 import org.eclipse.jface.resource.ImageDescriptor;
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16
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17 // import java.io.BufferedInputStream;
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18 // import java.io.FileInputStream;
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19 // import java.io.FileNotFoundException;
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20 // import java.io.IOException;
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21 // import java.io.InputStream;
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22
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23 import org.eclipse.swt.SWT;
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24 import org.eclipse.swt.SWTException;
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25 import org.eclipse.swt.graphics.Device;
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26 import org.eclipse.swt.graphics.Image;
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27 import org.eclipse.swt.graphics.ImageData;
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28 // import org.eclipse.core.runtime.FileLocator;
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29 // import org.eclipse.core.runtime.Path;
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30
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31 import java.lang.all;
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32 import java.io.InputStream;
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33 import java.io.FileInputStream;
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34 import java.io.BufferedInputStream;
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35 import java.io.ByteArrayInputStream;
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36
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37 /**
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38 * An image descriptor that loads its image information from a file.
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39 */
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40 class FileImageDescriptor : ImageDescriptor {
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41
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42 /**
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43 * The class whose resource directory contain the file, or <code>null</code>
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44 * if none.
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45 */
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46 // private ClassInfo location;
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47
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48 /**
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49 * The name of the file.
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50 */
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51 private String name;
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52 private void[] importdata;
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53
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54 /**
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55 * Creates a new file image descriptor. The file has the given file name and
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56 * is located in the given class's resource directory. If the given class is
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57 * <code>null</code>, the file name must be absolute.
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58 * <p>
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59 * Note that the file is not accessed until its <code>getImageDate</code>
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60 * method is called.
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61 * </p>
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62 *
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63 * @param clazz
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64 * class for resource directory, or <code>null</code>
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65 * @param filename
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66 * the name of the file
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67 */
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68 this(ImportData importdata) {
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69 // this.location = clazz;
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70 this.name = importdata.name;
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71 this.importdata = importdata.data;
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72 }
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73
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74 /*
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75 * (non-Javadoc) Method declared on Object.
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76 */
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77 public override int opEquals(Object o) {
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78 if (!( cast(FileImageDescriptor)o )) {
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79 return false;
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80 }
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81 FileImageDescriptor other = cast(FileImageDescriptor) o;
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82 // if (location !is null) {
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83 // if ( location.name != other.location.name ) {
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84 // return false;
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85 // }
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86 // } else {
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87 // if (other.location !is null) {
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88 // return false;
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89 // }
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90 // }
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91 return importdata == other.importdata;
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92 }
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93
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94 /**
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95 * @see org.eclipse.jface.resource.ImageDescriptor#getImageData() The
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96 * FileImageDescriptor implementation of this method is not used by
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97 * {@link ImageDescriptor#createImage(bool, Device)} as of version
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98 * 3.4 so that the SWT OS optimised loading can be used.
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99 */
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100 public override ImageData getImageData() {
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101 InputStream in_ = getStream();
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102 ImageData result = null;
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103 if (in_ !is null) {
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104 try {
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105 result = new ImageData(in_);
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106 } catch (SWTException e) {
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107 if (e.code !is SWT.ERROR_INVALID_IMAGE /+&& e.code !is SWT.ERROR_UNSUPPORTED_FORMAT+/) {
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108 getDwtLogger().trace( __FILE__, __LINE__, "FileImageDescriptor getImageData SWTException for name={}", name );
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109 throw e;
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110 // fall through otherwise
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111 }
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112 } finally {
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113 in_.close();
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114 }
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115 }
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116 return result;
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117 }
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118
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119 /**
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120 * Returns a stream on the image contents. Returns null if a stream could
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121 * not be opened.
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122 *
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123 * @return the buffered stream on the file or <code>null</code> if the
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124 * file cannot be found
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125 */
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126 private InputStream getStream() {
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127 InputStream is_ = null;
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128
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129 // if (location !is null) {
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130 is_ = new ByteArrayInputStream(cast(byte[]) importdata);
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131 // is_ = ClassInfoGetResourceAsStream( location, name);
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132
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133 // } else {
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134 // try {
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135 // is_ = new FileInputStream(name);
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136 // } catch (/+FileNotFoundException+/ IOException e) {
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137 // return null;
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138 // }
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139 // }
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140 if (is_ is null) {
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141 return null;
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142 }
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143 return new BufferedInputStream(is_);
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144
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145 }
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146
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147 /*
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148 * (non-Javadoc) Method declared on Object.
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149 */
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150 public override hash_t toHash() {
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151 int code = java.lang.all.toHash(cast(char[])importdata/+name+/);
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152 // if (location !is null) {
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153 // code += location.toHash();
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154 // }
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155 return code;
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156 }
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157
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158 /*
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159 * (non-Javadoc) Method declared on Object.
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160 */
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161 /**
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162 * The <code>FileImageDescriptor</code> implementation of this
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163 * <code>Object</code> method returns a string representation of this
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164 * object which is suitable only for debugging.
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165 */
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166 public override String toString() {
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167 return Format("FileImageDescriptor(name={})", name );//$NON-NLS-3$//$NON-NLS-2$//$NON-NLS-1$
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168 }
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169
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170 /*
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171 * (non-Javadoc)
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172 *
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173 * @see org.eclipse.jface.resource.ImageDescriptor#createImage(bool,
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174 * org.eclipse.swt.graphics.Device)
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175 */
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176 public override Image createImage(bool returnMissingImageOnError, Device device) {
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177 if( importdata.length is 0 ){
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178 String path = getFilePath();
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179 if (path is null )
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180 return createDefaultImage(returnMissingImageOnError, device);
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181 try {
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182 return new Image(device, path);
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183 } catch (SWTException exception) {
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184 //if we fail try the default way using a stream
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185 }
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186 }
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187 return super.createImage(returnMissingImageOnError, device);
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188 }
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189
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190 /**
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191 * Return default image if returnMissingImageOnError is true.
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192 *
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193 * @param device
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194 * @return Image or <code>null</code>
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195 */
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196 private Image createDefaultImage(bool returnMissingImageOnError,
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197 Device device) {
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198 try {
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199 if (returnMissingImageOnError)
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200 return new Image(device, DEFAULT_IMAGE_DATA);
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201 } catch (SWTException nextException) {
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202 return null;
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203 }
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204 return null;
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205 }
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206
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207 /**
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208 * Returns the filename for the ImageData.
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209 *
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210 * @return {@link String} or <code>null</code> if the file cannot be found
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211 */
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212 private String getFilePath() {
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213
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214 // if (location is null)
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215 // return (new Path(name)).toOSString();
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216 //
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217 // URL resource = location.getResource(name);
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218 //
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219 // if (resource is null)
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220 // return null;
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221 // try {
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222 // if (JFaceActivator.getBundleContext() is null) {// Stand-alone case
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223 //
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224 // return new Path(resource.getFile()).toOSString();
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225 // }
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226 // return new Path(FileLocator.toFileURL(resource).getPath()).toOSString();
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227 // } catch (IOException e) {
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228 // Policy.logException(e);
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229 return null;
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230 // }
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231 }
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232 }