1 | /**
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2 | * --------------------------------------------------------------------------
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3 | * Bootstrap (v5.1.3): dom/data.js
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4 | * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
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5 | * --------------------------------------------------------------------------
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6 | */
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7 |
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8 | /**
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9 | * ------------------------------------------------------------------------
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10 | * Constants
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11 | * ------------------------------------------------------------------------
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12 | */
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13 |
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14 | const elementMap = new Map()
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15 |
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16 | export default {
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17 | set(element, key, instance) {
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18 | if (!elementMap.has(element)) {
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19 | elementMap.set(element, new Map())
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20 | }
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21 |
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22 | const instanceMap = elementMap.get(element)
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23 |
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24 | // make it clear we only want one instance per element
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25 | // can be removed later when multiple key/instances are fine to be used
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26 | if (!instanceMap.has(key) && instanceMap.size !== 0) {
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27 | // eslint-disable-next-line no-console
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28 | console.error(`Bootstrap doesn't allow more than one instance per element. Bound instance: ${Array.from(instanceMap.keys())[0]}.`)
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29 | return
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30 | }
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31 |
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32 | instanceMap.set(key, instance)
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33 | },
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34 |
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35 | get(element, key) {
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36 | if (elementMap.has(element)) {
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37 | return elementMap.get(element).get(key) || null
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38 | }
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39 |
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40 | return null
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41 | },
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42 |
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43 | remove(element, key) {
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44 | if (!elementMap.has(element)) {
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45 | return
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46 | }
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47 |
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48 | const instanceMap = elementMap.get(element)
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49 |
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50 | instanceMap.delete(key)
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51 |
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52 | // free up element references if there are no instances left for an element
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53 | if (instanceMap.size === 0) {
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54 | elementMap.delete(element)
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55 | }
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56 | }
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57 | }
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