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2 | export declare type CompensationReverter = () => void;
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3 |
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7 |
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8 |
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9 | export declare class ScrollBar {
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10 | private _document;
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11 | constructor(_document: any);
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12 | /**
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13 | * To be called right before a potential vertical scrollbar would be removed:
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14 | *
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15 | * - if there was a scrollbar, adds some compensation padding to the body
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16 | * to keep the same layout as when the scrollbar is there
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17 | * - if there was none, there is nothing to do
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18 | *
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19 | * @return a callback used to revert the compensation (noop if there was none,
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20 | * otherwise a function removing the padding)
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21 | */
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22 | compensate(): CompensationReverter;
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23 | /**
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24 | * Adds a padding of the given width on the right of the body.
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25 | *
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26 | * @return a callback used to revert the padding to its previous value
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27 | */
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28 | private _adjustBody;
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29 | /**
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30 | * Tells whether a scrollbar is currently present on the body.
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31 | *
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32 | * @return true if scrollbar is present, false otherwise
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33 | */
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34 | private _isPresent;
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35 | /**
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36 | * Calculates and returns the width of a scrollbar.
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37 | *
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38 | * @return the width of a scrollbar on this page
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39 | */
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40 | private _getWidth;
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41 | }
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