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1 " |
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2 COPYRIGHT (c) 1997 by eXept Software AG / Claus Gittinger |
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3 All Rights Reserved |
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4 |
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5 This software is furnished under a license and may be used |
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6 only in accordance with the terms of that license and with the |
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7 inclusion of the above copyright notice. This software may not |
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8 be provided or otherwise made available to, or used by, any |
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9 other person. No title to or ownership of the software is |
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10 hereby transferred. |
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11 " |
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12 |
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13 |
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14 |
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15 SelectionInTreeView subclass:#FileSelectionTree |
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16 instanceVariableNames:'fileIcons itemClass' |
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17 classVariableNames:'' |
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18 poolDictionaries:'' |
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19 category:'Views-Text' |
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20 ! |
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21 |
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22 !FileSelectionTree class methodsFor:'documentation'! |
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23 |
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24 copyright |
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25 " |
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26 COPYRIGHT (c) 1997 by eXept Software AG / Claus Gittinger |
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27 All Rights Reserved |
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28 |
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29 This software is furnished under a license and may be used |
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30 only in accordance with the terms of that license and with the |
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31 inclusion of the above copyright notice. This software may not |
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32 be provided or otherwise made available to, or used by, any |
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33 other person. No title to or ownership of the software is |
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34 hereby transferred. |
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35 " |
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36 |
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37 |
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38 ! |
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39 |
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40 documentation |
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41 " |
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42 somewhat like a FileSelectionInList; but specialized for hierarchical (i.e. tree-like) |
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43 lists and adds the functions to show/hide subtrees. |
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44 Requires SelectionInTree as model and FileSelectionItem (or compatible) list entries. |
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45 |
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46 You can define your own TreeItem instead of useing the default class FileSelectionItem |
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47 by seting the class through to #itemClass: |
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48 |
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49 [see also:] |
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50 FileSelectionItem |
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51 SelectionInTree |
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52 SelectionInTreeView |
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53 SelectionInListView |
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54 |
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55 [author:] |
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56 Claus Atzkern |
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57 " |
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58 |
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59 |
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60 |
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61 ! |
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62 |
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63 examples |
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64 " |
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65 open a FileSelectionTree on current directory |
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66 [exBegin] |
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67 |top scr| |
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68 |
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69 top := StandardSystemView new label:'select'; extent:300@500. |
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70 scr := HVScrollableView for:FileSelectionTree origin:(0.0 @ 0.0) corner:(1.0 @ 1.0) in:top. |
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71 scr := scr scrolledView. |
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72 |
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73 scr directory:Filename currentDirectory. |
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74 |
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75 scr action:[:anIndex| Transcript showCR:anIndex. |
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76 Transcript showCR:scr selectedPathname. |
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77 ]. |
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78 top open |
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79 [exEnd] |
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80 |
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81 |
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82 |
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83 open a FileSelectionTree on root path; show directory |
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84 indication (open/closed) and no lines |
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85 [exBegin] |
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86 |top scr| |
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87 |
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88 top := StandardSystemView new label:'select'; extent:300@500. |
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89 scr := HVScrollableView for:FileSelectionTree origin:(0.0 @ 0.0) corner:(1.0 @ 1.0) in:top. |
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90 scr := scr scrolledView. |
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91 scr showDirectoryIndicator:true. |
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92 scr showLines:false. |
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93 |
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94 scr directory:'/'. |
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95 |
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96 scr action:[:anIndex| Transcript showCR:anIndex. |
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97 Transcript showCR:scr selectedPathname. |
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98 ]. |
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99 top open |
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100 [exEnd] |
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101 |
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102 |
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103 |
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104 open a FileSelectionTree on root path; showing only files |
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105 [exBegin] |
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106 |top scr| |
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107 |
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108 top := StandardSystemView new label:'select'; extent:300@500. |
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109 scr := HVScrollableView for:FileSelectionTree origin:(0.0 @ 0.0) corner:(1.0 @ 1.0) in:top. |
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110 scr := scr scrolledView. |
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111 scr itemClass:(FileSelectionItem directoriesOnly). |
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112 scr directory:'/'. |
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113 |
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114 scr action:[:anIndex| Transcript showCR:anIndex. |
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115 Transcript showCR:scr selectedPathname. |
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116 ]. |
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117 top open |
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118 [exEnd] |
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119 |
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120 |
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121 |
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122 open a FileSelectionTree on a specified path |
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123 [exBegin] |
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124 |top scr| |
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125 |
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126 top := StandardSystemView new label:'select'; extent:300@500. |
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127 scr := HVScrollableView for:FileSelectionTree origin:(0.0 @ 0.0) corner:(1.0 @ 1.0) in:top. |
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128 scr := scr scrolledView. |
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129 scr directory:'/'. |
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130 scr showLines:false. |
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131 scr action:[:anIndex| Transcript showCR:scr selectedPathname ]. |
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132 scr doubleClickAction:[:anIndex| Transcript showCR:scr selectedPathname ]. |
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133 top open |
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134 [exEnd] |
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135 |
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136 |
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137 |
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138 open a FileSelectionTree on a specified path; show or hide |
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139 lines on doubleClick on a file (not a directory) |
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140 [exBegin] |
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141 |top scr| |
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142 |
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143 top := StandardSystemView new label:'select'; extent:300@500. |
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144 scr := HVScrollableView for:FileSelectionTree origin:(0.0 @ 0.0) corner:(1.0 @ 1.0) in:top. |
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145 scr := scr scrolledView. |
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146 scr directory:'/'. |
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147 |
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148 scr action:[:anIndex| Transcript showCR:anIndex. |
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149 Transcript showCR:scr selectedPathname. |
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150 ]. |
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151 scr doubleClickAction:[:anIndex| |
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152 |fn| |
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153 fn := scr selectedPathname asFilename. |
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154 fn isDirectory ifFalse:[ |
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155 scr showLines:(scr showLines not) |
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156 ] |
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157 ]. |
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158 top open |
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159 [exEnd] |
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160 |
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161 |
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162 |
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163 a more complex example |
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164 [exBegin] |
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165 |action top tree slvw file tgD tgF button hzPn| |
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166 |
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167 top := StandardSystemView new label:'select'; extent:600@600. |
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168 tree := HVScrollableView for:FileSelectionTree origin:(0.0 @ 0.0) corner:(0.5 @ 1.0) in:top. |
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169 slvw := HVScrollableView for:FileSelectionTree origin:(0.5 @ 30) corner:(1.0 @ 1.0) in:top. |
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170 hzPn := HorizontalPanelView origin:(0.5 @ 0.0) corner:(1.0 @ 30) in:top. |
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171 tree := tree scrolledView. |
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172 slvw := slvw scrolledView. |
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173 |
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174 tree itemClass:(FileSelectionItem directoriesOnly). |
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175 tree directory:(Filename homeDirectory). |
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176 |
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177 slvw doubleClickSelectionBlock:[:anIndex| |
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178 (file := slvw selectedPathname asFilename) isDirectory ifTrue:[ |
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179 anIndex == 1 ifTrue:[file := file directory]. |
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180 tree selectPathname:file |
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181 ]. |
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182 false |
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183 ]. |
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184 slvw showLines:false. |
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185 |
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186 tree action:[:anIndex| |
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187 slvw directory:(tree selectedPathname) |
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188 ]. |
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189 action := [:tg||cls| |
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190 tgF isOn ifTrue:[ |
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191 tgD isOn ifTrue:[cls := FileSelectionItem] |
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192 ifFalse:[cls := FileSelectionItem filesOnly] |
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193 ] ifFalse:[ |
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194 tgD isOn ifTrue:[ |
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195 cls := FileSelectionItem directoriesOnly |
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196 ] ifFalse:[ |
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197 tg turnOn. |
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198 tg == tgD ifTrue:[cls := FileSelectionItem directoriesOnly] |
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199 ifFalse:[cls := FileSelectionItem filesOnly] |
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200 ] |
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201 ]. |
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202 slvw itemClass:cls. |
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203 ]. |
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204 hzPn verticalLayout:#fitSpace. |
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205 hzPn horizontalLayout:#fitSpace. |
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206 tgD := CheckBox label:'directory' in:hzPn. |
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207 tgF := CheckBox label:'file' in:hzPn. |
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208 button := Button label:'File Browser' in:hzPn. |
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209 |
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210 button action:[ |
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211 (file := slvw selectedPathname) isNil ifTrue:[ |
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212 file := tree selectedPathname |
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213 ]. |
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214 file notNil ifTrue:[ |
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215 file asFilename isDirectory ifTrue:[FileBrowser openOn:file] |
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216 ifFalse:[FileBrowser openOnFileNamed:file] |
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217 ] |
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218 ]. |
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219 |
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220 tgD turnOn. |
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221 tgF turnOn. |
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222 tgD action:[:v| action value:tgF]. |
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223 tgF action:[:v| action value:tgD]. |
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224 |
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225 top open |
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226 [exEnd] |
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227 " |
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228 |
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229 ! ! |
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230 |
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231 !FileSelectionTree methodsFor:'accessing'! |
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232 |
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233 directory |
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234 "get the full pathname of the root directory |
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235 " |
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236 |root| |
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237 |
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238 (root := model root) notNil ifTrue:[ |
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239 ^ root pathName |
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240 ]. |
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241 ^ nil |
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242 ! |
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243 |
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244 directory:aPathname |
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245 "change the root directory of the selection tree to the full pathName, |
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246 aPathname. The pathname must be a directory otherwise the root directory |
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247 is set to nil. |
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248 " |
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249 |root| |
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250 |
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251 self selection:nil. |
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252 |
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253 (aPathname notNil and:[aPathname asFilename isDirectory]) ifFalse:[ |
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254 model root:nil. |
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255 ^ self |
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256 ]. |
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257 |
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258 root := self itemClass pathName:aPathname. |
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259 model root:root. |
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260 model expand:root. |
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261 ! |
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262 |
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263 itemClass |
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264 "returns current itemClass used |
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265 " |
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266 ^ itemClass |
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267 ! |
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268 |
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269 itemClass:anItemClass |
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270 "set itemClass to be used |
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271 " |
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272 |directory| |
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273 |
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274 (anItemClass notNil and:[anItemClass ~~ itemClass]) ifTrue:[ |
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275 itemClass := anItemClass. |
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276 self refetchDeviceResources. |
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277 |
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278 (directory := self directory) notNil ifTrue:[ |
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279 self directory:directory |
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280 ]. |
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281 ]. |
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282 |
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283 ! ! |
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284 |
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285 !FileSelectionTree methodsFor:'drawing basics'! |
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286 |
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287 figureFor:aNode |
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288 "get the image used for the node entry. |
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289 " |
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290 |keyOrImage| |
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291 |
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292 aNode == self selectedNode ifFalse:[keyOrImage := aNode imageUnselected] |
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293 ifTrue:[keyOrImage := aNode imageSelected]. |
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294 |
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295 keyOrImage isSymbol ifTrue:[^ fileIcons at:keyOrImage]. |
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296 ^ keyOrImage |
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297 ! ! |
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298 |
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299 !FileSelectionTree methodsFor:'initialization'! |
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300 |
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301 fetchImageResources |
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302 "initialize heavily used device resources - to avoid rendering |
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303 images again and again later; returns maximum extent of the images used. |
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304 " |
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305 |y x t| |
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306 |
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307 fileIcons := self itemClass iconsOn:device. |
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308 |
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309 t := super fetchImageResources. |
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310 y := t y. |
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311 x := t x. |
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312 |
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313 fileIcons do:[:anIcon| |
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314 (t := anIcon heightOn:self) > y ifTrue:[y := t]. |
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315 (t := anIcon widthOn:self) > x ifTrue:[x := t]. |
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316 ]. |
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317 ^ x @ y |
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318 |
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319 ! |
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320 |
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321 initialize |
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322 "setup my model and set the default path to the current directory; on default |
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323 multiple selection is disabled. |
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324 " |
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325 super initialize. |
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326 itemClass := FileSelectionItem. |
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327 self model:(SelectionInTree new). |
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328 |
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329 ! ! |
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330 |
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331 !FileSelectionTree methodsFor:'queries'! |
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332 |
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333 canSelect:aFilename |
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334 "returns true if a file is selectable dependant on |
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335 filter ... |
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336 " |
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337 |root| |
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338 |
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339 (itemClass isSelectableFile:aFilename) ifTrue:[ |
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340 (root := self directory) notNil ifTrue:[ |
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341 ^ aFilename asString startsWith:root |
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342 ] |
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343 ]. |
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344 ^ false |
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345 ! ! |
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346 |
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347 !FileSelectionTree methodsFor:'selection'! |
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348 |
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349 selectPathname:aPath |
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350 "set selection to a path |
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351 " |
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352 |node comp rdwNd path| |
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353 |
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354 (self canSelect:aPath) ifFalse:[ |
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355 ^ self selection:nil |
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356 ]. |
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357 ((path := aPath asString) = self selectedPathname) ifTrue:[ |
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358 "/ already selected |
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359 ^ self |
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360 ]. |
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361 |
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362 comp := Filename components:(path copyFrom:(self directory size + 1)). |
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363 node := model root. |
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364 |
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365 comp do:[:el||next| |
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366 next := node detectChild:[:e|e name = el]. |
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367 |
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368 next notNil ifTrue:[ |
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369 node hidden ifTrue:[ |
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370 rdwNd isNil ifTrue:[ |
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371 rdwNd := node. |
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372 self selectNode:node. |
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373 ]. |
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374 node expand |
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375 ]. |
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376 node := next |
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377 ] |
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378 ]. |
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379 |
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380 rdwNd notNil ifTrue:[ |
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381 model updateList. |
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382 list := self listFromModel. |
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383 self redrawFromLine:(self indexOfNode:rdwNd). |
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384 self contentsChanged. |
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385 ]. |
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386 self selectNode:node. |
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387 ! |
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388 |
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389 selectedPathname |
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390 "if there is a single selection, the full pathname of the selected |
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391 entry will be returned otherwise nil |
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392 " |
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393 |node| |
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394 |
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395 (node := self selectedNode) notNil ifTrue:[ |
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396 ^ node pathName |
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397 ]. |
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398 ^ nil |
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399 |
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400 ! ! |
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401 |
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402 !FileSelectionTree class methodsFor:'documentation'! |
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403 |
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404 version |
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405 ^ '$Header: /cvs/stx/stx/libwidg2/FileSelectionTree.st,v 1.1 1997-08-07 13:15:21 ca Exp $' |
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406 ! ! |