Mercurial > projects > dwt2
annotate org.eclipse.jface/src/org/eclipse/jface/resource/FileImageDescriptor.d @ 17:6f068362a363
Remove direct import of tango.text.convert.Format
author | Frank Benoit <benoit@tionex.de> |
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date | Wed, 18 Mar 2009 09:09:23 +0100 |
parents | bc29606a740c |
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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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14 |
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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 import tango.util.log.Trace; |
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38 |
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39 /** |
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40 * An image descriptor that loads its image information from a file. |
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41 */ |
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42 class FileImageDescriptor : ImageDescriptor { |
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43 |
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44 /** |
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45 * The class whose resource directory contain the file, or <code>null</code> |
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46 * if none. |
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47 */ |
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48 // private ClassInfo location; |
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49 |
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50 /** |
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51 * The name of the file. |
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52 */ |
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53 private String name; |
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54 private void[] importdata; |
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55 |
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56 /** |
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57 * Creates a new file image descriptor. The file has the given file name and |
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58 * is located in the given class's resource directory. If the given class is |
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59 * <code>null</code>, the file name must be absolute. |
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60 * <p> |
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61 * Note that the file is not accessed until its <code>getImageDate</code> |
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62 * method is called. |
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63 * </p> |
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64 * |
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65 * @param clazz |
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66 * class for resource directory, or <code>null</code> |
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67 * @param filename |
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68 * the name of the file |
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69 */ |
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70 this(ImportData importdata) { |
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71 // this.location = clazz; |
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72 this.name = importdata.name; |
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73 this.importdata = importdata.data; |
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74 } |
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75 |
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76 /* |
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77 * (non-Javadoc) Method declared on Object. |
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78 */ |
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79 public override int opEquals(Object o) { |
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80 if (!( cast(FileImageDescriptor)o )) { |
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81 return false; |
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82 } |
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83 FileImageDescriptor other = cast(FileImageDescriptor) o; |
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84 // if (location !is null) { |
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85 // if ( location.name != other.location.name ) { |
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86 // return false; |
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87 // } |
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88 // } else { |
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89 // if (other.location !is null) { |
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90 // return false; |
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91 // } |
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92 // } |
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93 return importdata == other.importdata; |
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94 } |
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95 |
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96 /** |
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97 * @see org.eclipse.jface.resource.ImageDescriptor#getImageData() The |
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98 * FileImageDescriptor implementation of this method is not used by |
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99 * {@link ImageDescriptor#createImage(bool, Device)} as of version |
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100 * 3.4 so that the SWT OS optimised loading can be used. |
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101 */ |
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102 public override ImageData getImageData() { |
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103 InputStream in_ = getStream(); |
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104 ImageData result = null; |
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105 if (in_ !is null) { |
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106 try { |
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107 result = new ImageData(in_); |
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108 } catch (SWTException e) { |
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109 if (e.code !is SWT.ERROR_INVALID_IMAGE /+&& e.code !is SWT.ERROR_UNSUPPORTED_FORMAT+/) { |
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110 Trace.formatln( "FileImageDescriptor getImageData SWTException for name={}", name ); |
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111 throw e; |
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112 // fall through otherwise |
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113 } |
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114 } finally { |
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115 in_.close(); |
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116 } |
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117 } |
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118 return result; |
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119 } |
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120 |
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121 /** |
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122 * Returns a stream on the image contents. Returns null if a stream could |
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123 * not be opened. |
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124 * |
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125 * @return the buffered stream on the file or <code>null</code> if the |
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126 * file cannot be found |
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127 */ |
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128 private InputStream getStream() { |
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129 InputStream is_ = null; |
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130 |
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131 // if (location !is null) { |
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132 // Trace.formatln( "FileImageDescriptor getStream importdata.length={} name={}",importdata.length, name ); |
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133 is_ = new ByteArrayInputStream(cast(byte[]) importdata); |
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134 // is_ = ClassInfoGetResourceAsStream( location, name); |
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135 |
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136 // } else { |
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137 // try { |
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138 // is_ = new FileInputStream(name); |
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139 // } catch (/+FileNotFoundException+/ IOException e) { |
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140 // return null; |
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141 // } |
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142 // } |
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143 if (is_ is null) { |
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144 return null; |
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145 } |
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146 return new BufferedInputStream(is_); |
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147 |
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148 } |
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149 |
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150 /* |
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151 * (non-Javadoc) Method declared on Object. |
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152 */ |
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153 public override hash_t toHash() { |
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154 int code = java.lang.all.toHash(cast(char[])importdata/+name+/); |
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155 // if (location !is null) { |
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156 // code += location.toHash(); |
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157 // } |
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158 return code; |
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159 } |
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160 |
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161 /* |
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162 * (non-Javadoc) Method declared on Object. |
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163 */ |
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164 /** |
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165 * The <code>FileImageDescriptor</code> implementation of this |
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166 * <code>Object</code> method returns a string representation of this |
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167 * object which is suitable only for debugging. |
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168 */ |
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169 public override String toString() { |
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170 return Format("FileImageDescriptor(name={})", name );//$NON-NLS-3$//$NON-NLS-2$//$NON-NLS-1$ |
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171 } |
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172 |
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173 /* |
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174 * (non-Javadoc) |
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175 * |
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176 * @see org.eclipse.jface.resource.ImageDescriptor#createImage(bool, |
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177 * org.eclipse.swt.graphics.Device) |
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178 */ |
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179 public override Image createImage(bool returnMissingImageOnError, Device device) { |
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180 if( importdata.length is 0 ){ |
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181 String path = getFilePath(); |
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182 if (path is null ) |
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183 return createDefaultImage(returnMissingImageOnError, device); |
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184 try { |
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185 return new Image(device, path); |
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186 } catch (SWTException exception) { |
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187 //if we fail try the default way using a stream |
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188 } |
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189 } |
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190 return super.createImage(returnMissingImageOnError, device); |
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191 } |
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192 |
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193 /** |
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194 * Return default image if returnMissingImageOnError is true. |
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195 * |
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196 * @param device |
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197 * @return Image or <code>null</code> |
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198 */ |
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199 private Image createDefaultImage(bool returnMissingImageOnError, |
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200 Device device) { |
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201 try { |
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202 if (returnMissingImageOnError) |
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203 return new Image(device, DEFAULT_IMAGE_DATA); |
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204 } catch (SWTException nextException) { |
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205 return null; |
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206 } |
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207 return null; |
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208 } |
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209 |
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210 /** |
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211 * Returns the filename for the ImageData. |
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212 * |
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213 * @return {@link String} or <code>null</code> if the file cannot be found |
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214 */ |
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215 private String getFilePath() { |
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216 |
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217 // if (location is null) |
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218 // return (new Path(name)).toOSString(); |
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219 // |
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220 // URL resource = location.getResource(name); |
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221 // |
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222 // if (resource is null) |
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223 // return null; |
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224 // try { |
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225 // if (JFaceActivator.getBundleContext() is null) {// Stand-alone case |
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226 // |
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227 // return new Path(resource.getFile()).toOSString(); |
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228 // } |
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229 // return new Path(FileLocator.toFileURL(resource).getPath()).toOSString(); |
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230 // } catch (IOException e) { |
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231 // Policy.logException(e); |
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232 return null; |
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233 // } |
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234 } |
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235 } |