Mercurial > projects > dwt-addons
annotate dwtx/jface/viewers/ViewerRow.d @ 70:46a6e0e6ccd4
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| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Thu, 22 May 2008 01:36:46 +0200 |
| parents | ea8ff534f622 |
| children | 4878bef4a38e |
| rev | line source |
|---|---|
| 10 | 1 /******************************************************************************* |
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2 * Copyright (c) 2006, 2008 IBM Corporation and others. |
| 10 | 3 * All rights reserved. This program and the accompanying materials |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
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10 * Tom Schindl <tom.schindl@bestsolution.at> - initial API and implementation |
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11 * - fix in bug: 166346,167325,174355,195908,198035,215069 |
| 10 | 12 * Port to the D programming language: |
| 13 * Frank Benoit <benoit@tionex.de> | |
| 14 *******************************************************************************/ | |
| 15 | |
| 16 module dwtx.jface.viewers.ViewerRow; | |
| 17 | |
| 18 import dwtx.jface.viewers.ViewerCell; | |
| 19 import dwtx.jface.viewers.ViewerRow; | |
| 20 import dwtx.jface.viewers.TreePath; | |
| 21 | |
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22 import dwt.custom.StyleRange; |
| 10 | 23 import dwt.graphics.Color; |
| 24 import dwt.graphics.Font; | |
| 25 import dwt.graphics.Image; | |
| 26 import dwt.graphics.Point; | |
| 27 import dwt.graphics.Rectangle; | |
| 28 import dwt.widgets.Control; | |
| 29 import dwt.widgets.Widget; | |
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30 import dwtx.jface.util.Policy; |
| 10 | 31 |
| 32 import dwt.dwthelper.utils; | |
| 33 | |
| 34 /** | |
| 35 * ViewerRow is the abstract superclass of the part that represents items in a | |
| 36 * Table or Tree. Implementors of {@link ColumnViewer} have to provide a | |
| 37 * concrete implementation for the underlying widget | |
| 38 * | |
| 39 * @since 3.3 | |
| 40 * | |
| 41 */ | |
| 42 public abstract class ViewerRow : Cloneable { | |
| 43 | |
| 44 /** | |
| 45 * Constant denoting the row above the current one (value is 1). | |
| 46 * | |
| 47 * @see #getNeighbor(int, bool) | |
| 48 */ | |
| 49 public static const int ABOVE = 1; | |
| 50 | |
| 51 /** | |
| 52 * Constant denoting the row below the current one (value is 2). | |
| 53 * | |
| 54 * @see #getNeighbor(int, bool) | |
| 55 */ | |
| 56 public static const int BELOW = 2; | |
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57 |
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58 private static final String KEY_TEXT_LAYOUT = Policy.JFACE + "styled_label_key_"; //$NON-NLS-1$ |
| 10 | 59 |
| 60 /** | |
| 61 * Get the bounds of the entry at the columnIndex, | |
| 62 * | |
| 63 * @param columnIndex | |
| 64 * @return {@link Rectangle} | |
| 65 */ | |
| 66 public abstract Rectangle getBounds(int columnIndex); | |
| 67 | |
| 68 /** | |
| 69 * Return the bounds for the whole item. | |
| 70 * | |
| 71 * @return {@link Rectangle} | |
| 72 */ | |
| 73 public abstract Rectangle getBounds(); | |
| 74 | |
| 75 /** | |
| 76 * Return the item for the receiver. | |
| 77 * | |
| 78 * @return {@link Widget} | |
| 79 */ | |
| 80 public abstract Widget getItem(); | |
| 81 | |
| 82 /** | |
| 83 * Return the number of columns for the receiver. | |
| 84 * | |
| 85 * @return the number of columns | |
| 86 */ | |
| 87 public abstract int getColumnCount(); | |
| 88 | |
| 89 /** | |
| 90 * Return the image at the columnIndex. | |
| 91 * | |
| 92 * @param columnIndex | |
| 93 * @return {@link Image} or <code>null</code> | |
| 94 */ | |
| 95 public abstract Image getImage(int columnIndex); | |
| 96 | |
| 97 /** | |
| 98 * Set the image at the columnIndex | |
| 99 * | |
| 100 * @param columnIndex | |
| 101 * @param image | |
| 102 */ | |
| 103 public abstract void setImage(int columnIndex, Image image); | |
| 104 | |
| 105 /** | |
| 106 * Get the text at the columnIndex. | |
| 107 * | |
| 108 * @param columnIndex | |
| 109 * @return {@link String} | |
| 110 */ | |
| 111 public abstract String getText(int columnIndex); | |
| 112 | |
| 113 /** | |
| 114 * Set the text at the columnIndex | |
| 115 * | |
| 116 * @param columnIndex | |
| 117 * @param text | |
| 118 */ | |
| 119 public abstract void setText(int columnIndex, String text); | |
| 120 | |
| 121 /** | |
| 122 * Get the background at the columnIndex, | |
| 123 * | |
| 124 * @param columnIndex | |
| 125 * @return {@link Color} or <code>null</code> | |
| 126 */ | |
| 127 public abstract Color getBackground(int columnIndex); | |
| 128 | |
| 129 /** | |
| 130 * Set the background at the columnIndex. | |
| 131 * | |
| 132 * @param columnIndex | |
| 133 * @param color | |
| 134 */ | |
| 135 public abstract void setBackground(int columnIndex, Color color); | |
| 136 | |
| 137 /** | |
| 138 * Get the foreground at the columnIndex. | |
| 139 * | |
| 140 * @param columnIndex | |
| 141 * @return {@link Color} or <code>null</code> | |
| 142 */ | |
| 143 public abstract Color getForeground(int columnIndex); | |
| 144 | |
| 145 /** | |
| 146 * Set the foreground at the columnIndex. | |
| 147 * | |
| 148 * @param columnIndex | |
| 149 * @param color | |
| 150 */ | |
| 151 public abstract void setForeground(int columnIndex, Color color); | |
| 152 | |
| 153 /** | |
| 154 * Get the font at the columnIndex. | |
| 155 * | |
| 156 * @param columnIndex | |
| 157 * @return {@link Font} or <code>null</code> | |
| 158 */ | |
| 159 public abstract Font getFont(int columnIndex); | |
| 160 | |
| 161 /** | |
| 162 * Set the {@link Font} at the columnIndex. | |
| 163 * | |
| 164 * @param columnIndex | |
| 165 * @param font | |
| 166 */ | |
| 167 public abstract void setFont(int columnIndex, Font font); | |
| 168 | |
| 169 /** | |
| 170 * Get the ViewerCell at point. | |
| 171 * | |
| 172 * @param point | |
| 173 * @return {@link ViewerCell} | |
| 174 */ | |
| 175 public ViewerCell getCell(Point point) { | |
| 176 int index = getColumnIndex(point); | |
| 177 return getCell(index); | |
| 178 } | |
| 179 | |
| 180 /** | |
| 181 * Get the columnIndex of the point. | |
| 182 * | |
| 183 * @param point | |
| 184 * @return int or -1 if it cannot be found. | |
| 185 */ | |
| 186 public int getColumnIndex(Point point) { | |
| 187 int count = getColumnCount(); | |
| 188 | |
| 189 // If there are no columns the column-index is 0 | |
| 190 if (count is 0) { | |
| 191 return 0; | |
| 192 } | |
| 193 | |
| 194 for (int i = 0; i < count; i++) { | |
| 195 if (getBounds(i).contains(point)) { | |
| 196 return i; | |
| 197 } | |
| 198 } | |
| 199 | |
| 200 return -1; | |
| 201 } | |
| 202 | |
| 203 /** | |
| 204 * Get a ViewerCell for the column at index. | |
| 205 * | |
| 206 * @param column | |
| 207 * @return {@link ViewerCell} or <code>null</code> if the index is | |
| 208 * negative. | |
| 209 */ | |
| 210 public ViewerCell getCell(int column) { | |
| 211 if (column >= 0) | |
| 212 return new ViewerCell(cast(ViewerRow) clone(), column, getElement()); | |
| 213 | |
| 214 return null; | |
| 215 } | |
| 216 | |
| 217 /** | |
| 218 * Get the Control for the receiver. | |
| 219 * | |
| 220 * @return {@link Control} | |
| 221 */ | |
| 222 public abstract Control getControl(); | |
| 223 | |
| 224 /** | |
| 225 * Returns a neighboring row, or <code>null</code> if no neighbor exists | |
| 226 * in the given direction. If <code>sameLevel</code> is <code>true</code>, | |
| 227 * only sibling rows (under the same parent) will be considered. | |
| 228 * | |
| 229 * @param direction | |
| 230 * the direction {@link #BELOW} or {@link #ABOVE} | |
| 231 * | |
| 232 * @param sameLevel | |
| 233 * if <code>true</code>, search only within sibling rows | |
| 234 * @return the row above/below, or <code>null</code> if not found | |
| 235 */ | |
| 236 public abstract ViewerRow getNeighbor(int direction, bool sameLevel); | |
| 237 | |
| 238 /** | |
| 239 * The tree path used to identify an element by the unique path | |
| 240 * | |
| 241 * @return the path | |
| 242 */ | |
| 243 public abstract TreePath getTreePath(); | |
| 244 | |
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245 public /+override+/ abstract Object clone(); |
| 10 | 246 |
| 247 /** | |
| 248 * @return the model element | |
| 249 */ | |
| 250 public abstract Object getElement(); | |
| 251 | |
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252 public override hash_t toHash() { |
| 10 | 253 final int prime = 31; |
| 254 int result = 1; | |
| 255 result = prime * result | |
| 256 + ((getItem() is null) ? 0 : getItem().toHash()); | |
| 257 return result; | |
| 258 } | |
| 259 | |
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260 public override int opEquals(Object obj) { |
| 10 | 261 if (this is obj) |
| 262 return true; | |
| 263 if (obj is null) | |
| 264 return false; | |
| 265 if (this.classinfo !is obj.classinfo) | |
| 266 return false; | |
| 267 ViewerRow other = cast(ViewerRow) obj; | |
| 268 if (getItem() is null) { | |
| 269 if (other.getItem() !is null) | |
| 270 return false; | |
| 271 } else if (!getItem().opEquals(other.getItem())) | |
| 272 return false; | |
| 273 return true; | |
| 274 } | |
| 275 | |
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276 /** |
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277 * The cell at the current index (as shown in the UI). This can be different |
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278 * to the original index when columns are reordered. |
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279 * |
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280 * @param visualIndex |
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281 * the current index (as shown in the UI) |
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282 * @return the cell at the currently visible index |
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283 */ |
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284 ViewerCell getCellAtVisualIndex(int visualIndex) { |
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285 return getCell(getCreationIndex(visualIndex)); |
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286 } |
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287 |
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288 /** |
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289 * Translate the original column index to the actual one. |
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290 * <p> |
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291 * <b>Because of backwards API compatibility the default implementation |
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292 * returns the original index. Implementators of {@link ColumnViewer} should |
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293 * overwrite this method if their widget supports reordered columns</b> |
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294 * </p> |
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295 * |
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296 * @param creationIndex |
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297 * the original index |
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298 * @return the current index (as shown in the UI) |
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299 * @since 3.4 |
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300 */ |
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301 protected int getVisualIndex(int creationIndex) { |
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302 return creationIndex; |
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303 } |
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304 |
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305 /** |
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306 * Translate the current column index (as shown in the UI) to the original |
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307 * one. |
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308 * <p> |
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309 * <b>Because of backwards API compatibility the default implementation |
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310 * returns the original index. Implementators of {@link ColumnViewer} should |
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311 * overwrite this method if their widget supports reordered columns</b> |
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312 * </p> |
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313 * |
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314 * @param visualIndex |
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315 * the current index (as shown in the UI) |
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316 * @return the original index |
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317 * @since 3.4 |
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318 */ |
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319 protected int getCreationIndex(int visualIndex) { |
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320 return visualIndex; |
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321 } |
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322 |
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323 /** |
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324 * The location and bounds of the area where the text is drawn depends on |
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325 * various things (image displayed, control with DWT.CHECK) |
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326 * |
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327 * @param index |
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328 * the column index |
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329 * @return the bounds of the of the text area. May return <code>null</code> |
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330 * if the underlying widget implementation doesn't provide this |
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331 * information |
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332 * @since 3.4 |
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333 */ |
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334 public Rectangle getTextBounds(int index) { |
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335 return null; |
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336 } |
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337 |
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338 |
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339 /** |
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340 * Returns the location and bounds of the area where the image is drawn. |
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341 * |
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342 * @param index |
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343 * the column index |
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344 * @return the bounds of the of the image area. May return <code>null</code> |
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345 * if the underlying widget implementation doesn't provide this |
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346 * information |
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347 * @since 3.4 |
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348 */ |
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349 public Rectangle getImageBounds(int index) { |
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350 return null; |
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351 } |
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352 |
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353 /** |
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354 * Set the style ranges to be applied on the text label at the column index |
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355 * Note: Requires {@link StyledCellLabelProvider} with owner draw enabled. |
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356 * |
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357 * @param columnIndex the index of the column |
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358 * @param styleRanges the styled ranges |
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359 * |
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360 * @since 3.4 |
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361 */ |
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362 public void setStyleRanges(int columnIndex, StyleRange[] styleRanges) { |
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363 getItem().setData(KEY_TEXT_LAYOUT + columnIndex, styleRanges); |
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364 } |
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365 |
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366 |
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367 /** |
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368 * Returns the style ranges to be applied on the text label at the column index or <code>null</code> if no |
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369 * style ranges have been set. |
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370 * |
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371 * @param columnIndex the index of the column |
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372 * @return styleRanges the styled ranges |
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373 * |
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374 * @since 3.4 |
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375 */ |
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376 public StyleRange[] getStyleRanges(int columnIndex) { |
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377 return (StyleRange[]) getItem().getData(KEY_TEXT_LAYOUT + columnIndex); |
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378 } |
| 10 | 379 } |