import { arrow, createPopperLite, flip, preventOverflow, } from '@popperjs/core';
const placementSeparator = /\s+/;
const spacesRegExp = /  +/gi;
/**
 * Matching classes from the Bootstrap ones to the poppers ones.
 * The first index of each array is used for the left to right direction,
 * the second one is used for the right to left, defaulting to the first index (when LTR and RTL lead to the same class)
 *
 * See [Bootstrap alignments](https://getbootstrap.com/docs/5.1/components/dropdowns/#alignment-options)
 * and [Popper placements](https://popper.js.org/docs/v2/constructors/#options)
 */
const bootstrapPopperMatches = {
    top: ['top'],
    bottom: ['bottom'],
    start: ['left', 'right'],
    left: ['left'],
    end: ['right', 'left'],
    right: ['right'],
    'top-start': ['top-start', 'top-end'],
    'top-left': ['top-start'],
    'top-end': ['top-end', 'top-start'],
    'top-right': ['top-end'],
    'bottom-start': ['bottom-start', 'bottom-end'],
    'bottom-left': ['bottom-start'],
    'bottom-end': ['bottom-end', 'bottom-start'],
    'bottom-right': ['bottom-end'],
    'start-top': ['left-start', 'right-start'],
    'left-top': ['left-start'],
    'start-bottom': ['left-end', 'right-end'],
    'left-bottom': ['left-end'],
    'end-top': ['right-start', 'left-start'],
    'right-top': ['right-start'],
    'end-bottom': ['right-end', 'left-end'],
    'right-bottom': ['right-end'],
};
export function getPopperClassPlacement(placement, isRTL) {
    const [leftClass, rightClass] = bootstrapPopperMatches[placement];
    return isRTL ? rightClass || leftClass : leftClass;
}
const popperStartPrimaryPlacement = /^left/;
const popperEndPrimaryPlacement = /^right/;
const popperStartSecondaryPlacement = /^start/;
const popperEndSecondaryPlacement = /^end/;
export function getBootstrapBaseClassPlacement(baseClass, placement) {
    let [primary, secondary] = placement.split('-');
    const newPrimary = primary.replace(popperStartPrimaryPlacement, 'start').replace(popperEndPrimaryPlacement, 'end');
    let classnames = [newPrimary];
    if (secondary) {
        let newSecondary = secondary;
        if (primary === 'left' || primary === 'right') {
            newSecondary = newSecondary
                .replace(popperStartSecondaryPlacement, 'top')
                .replace(popperEndSecondaryPlacement, 'bottom');
        }
        classnames.push(`${newPrimary}-${newSecondary}`);
    }
    if (baseClass) {
        classnames = classnames.map((classname) => `${baseClass}-${classname}`);
    }
    return classnames.join(' ');
}
/*
 * Accept the placement array and applies the appropriate placement dependent on the viewport.
 * Returns the applied placement.
 * In case of auto placement, placements are selected in order
 *   'top', 'bottom', 'start', 'end',
 *   'top-start', 'top-end',
 *   'bottom-start', 'bottom-end',
 *   'start-top', 'start-bottom',
 *   'end-top', 'end-bottom'.
 * */
export function getPopperOptions({ placement, baseClass }, rtl) {
    let placementVals = Array.isArray(placement)
        ? placement
        : placement.split(placementSeparator);
    // No need to consider left and right here, as start and end are enough, and it is used for 'auto' placement only
    const allowedPlacements = [
        'top',
        'bottom',
        'start',
        'end',
        'top-start',
        'top-end',
        'bottom-start',
        'bottom-end',
        'start-top',
        'start-bottom',
        'end-top',
        'end-bottom',
    ];
    // replace auto placement with other placements
    let hasAuto = placementVals.findIndex((val) => val === 'auto');
    if (hasAuto >= 0) {
        allowedPlacements.forEach(function (obj) {
            if (placementVals.find((val) => val.search('^' + obj) !== -1) == null) {
                placementVals.splice(hasAuto++, 1, obj);
            }
        });
    }
    const popperPlacements = placementVals.map((_placement) => {
        return getPopperClassPlacement(_placement, rtl.isRTL());
    });
    let mainPlacement = popperPlacements.shift();
    const bsModifier = {
        name: 'bootstrapClasses',
        enabled: !!baseClass,
        phase: 'write',
        fn({ state }) {
            const bsClassRegExp = new RegExp(baseClass + '(-[a-z]+)*', 'gi');
            const popperElement = state.elements.popper;
            const popperPlacement = state.placement;
            let className = popperElement.className;
            // Remove old bootstrap classes
            className = className.replace(bsClassRegExp, '');
            // Add current placements
            className += ` ${getBootstrapBaseClassPlacement(baseClass, popperPlacement)}`;
            // Remove multiple spaces
            className = className.trim().replace(spacesRegExp, ' ');
            // Reassign
            popperElement.className = className;
        },
    };
    return {
        placement: mainPlacement,
        modifiers: [
            bsModifier,
            flip,
            preventOverflow,
            arrow,
            {
                enabled: true,
                name: 'flip',
                options: {
                    fallbackPlacements: popperPlacements,
                },
            },
            {
                enabled: true,
                name: 'preventOverflow',
                phase: 'main',
                fn: function () { },
            },
        ],
    };
}
function noop(arg) {
    return arg;
}
export function ngbPositioning(rtl) {
    let popperInstance = null;
    return {
        createPopper(positioningOption) {
            if (!popperInstance) {
                const updatePopperOptions = positioningOption.updatePopperOptions || noop;
                let popperOptions = updatePopperOptions(getPopperOptions(positioningOption, rtl));
                popperInstance = createPopperLite(positioningOption.hostElement, positioningOption.targetElement, popperOptions);
            }
        },
        update() {
            if (popperInstance) {
                popperInstance.update();
            }
        },
        setOptions(positioningOption) {
            if (popperInstance) {
                const updatePopperOptions = positioningOption.updatePopperOptions || noop;
                let popperOptions = updatePopperOptions(getPopperOptions(positioningOption, rtl));
                popperInstance.setOptions(popperOptions);
            }
        },
        destroy() {
            if (popperInstance) {
                popperInstance.destroy();
                popperInstance = null;
            }
        },
    };
}
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{\n\tarrow,\n\tcreatePopperLite,\n\tflip,\n\tInstance,\n\tModifier,\n\tPlacement as PopperPlacement,\n\tpreventOverflow,\n\tOptions,\n} from '@popperjs/core';\nimport { NgbRTL } from './rtl';\n\nconst placementSeparator = /\\s+/;\nconst spacesRegExp = /  +/gi;\n\n/**\n * Matching classes from the Bootstrap ones to the poppers ones.\n * The first index of each array is used for the left to right direction,\n * the second one is used for the right to left, defaulting to the first index (when LTR and RTL lead to the same class)\n *\n * See [Bootstrap alignments](https://getbootstrap.com/docs/5.1/components/dropdowns/#alignment-options)\n * and [Popper placements](https://popper.js.org/docs/v2/constructors/#options)\n */\nconst bootstrapPopperMatches = {\n\ttop: ['top'],\n\tbottom: ['bottom'],\n\tstart: ['left', 'right'],\n\tleft: ['left'],\n\tend: ['right', 'left'],\n\tright: ['right'],\n\t'top-start': ['top-start', 'top-end'],\n\t'top-left': ['top-start'],\n\t'top-end': ['top-end', 'top-start'],\n\t'top-right': ['top-end'],\n\t'bottom-start': ['bottom-start', 'bottom-end'],\n\t'bottom-left': ['bottom-start'],\n\t'bottom-end': ['bottom-end', 'bottom-start'],\n\t'bottom-right': ['bottom-end'],\n\t'start-top': ['left-start', 'right-start'],\n\t'left-top': ['left-start'],\n\t'start-bottom': ['left-end', 'right-end'],\n\t'left-bottom': ['left-end'],\n\t'end-top': ['right-start', 'left-start'],\n\t'right-top': ['right-start'],\n\t'end-bottom': ['right-end', 'left-end'],\n\t'right-bottom': ['right-end'],\n};\n\nexport function getPopperClassPlacement(placement: Placement, isRTL: boolean): PopperPlacement {\n\tconst [leftClass, rightClass] = bootstrapPopperMatches[placement];\n\treturn isRTL ? rightClass || leftClass : leftClass;\n}\n\nconst popperStartPrimaryPlacement = /^left/;\nconst popperEndPrimaryPlacement = /^right/;\nconst popperStartSecondaryPlacement = /^start/;\nconst popperEndSecondaryPlacement = /^end/;\nexport function getBootstrapBaseClassPlacement(baseClass: string, placement: PopperPlacement): string {\n\tlet [primary, secondary] = placement.split('-');\n\tconst newPrimary = primary.replace(popperStartPrimaryPlacement, 'start').replace(popperEndPrimaryPlacement, 'end');\n\tlet classnames = [newPrimary];\n\tif (secondary) {\n\t\tlet newSecondary = secondary;\n\t\tif (primary === 'left' || primary === 'right') {\n\t\t\tnewSecondary = newSecondary\n\t\t\t\t.replace(popperStartSecondaryPlacement, 'top')\n\t\t\t\t.replace(popperEndSecondaryPlacement, 'bottom');\n\t\t}\n\t\tclassnames.push(`${newPrimary}-${newSecondary}` as Placement);\n\t}\n\tif (baseClass) {\n\t\tclassnames = classnames.map((classname) => `${baseClass}-${classname}`);\n\t}\n\treturn classnames.join(' ');\n}\n\n/*\n * Accept the placement array and applies the appropriate placement dependent on the viewport.\n * Returns the applied placement.\n * In case of auto placement, placements are selected in order\n *   'top', 'bottom', 'start', 'end',\n *   'top-start', 'top-end',\n *   'bottom-start', 'bottom-end',\n *   'start-top', 'start-bottom',\n *   'end-top', 'end-bottom'.\n * */\nexport function getPopperOptions({ placement, baseClass }: PositioningOptions, rtl: NgbRTL): Partial<Options> {\n\tlet placementVals: Array<Placement> = Array.isArray(placement)\n\t\t? placement\n\t\t: (placement.split(placementSeparator) as Array<Placement>);\n\n\t// No need to consider left and right here, as start and end are enough, and it is used for 'auto' placement only\n\tconst allowedPlacements = [\n\t\t'top',\n\t\t'bottom',\n\t\t'start',\n\t\t'end',\n\t\t'top-start',\n\t\t'top-end',\n\t\t'bottom-start',\n\t\t'bottom-end',\n\t\t'start-top',\n\t\t'start-bottom',\n\t\t'end-top',\n\t\t'end-bottom',\n\t];\n\n\t// replace auto placement with other placements\n\tlet hasAuto = placementVals.findIndex((val) => val === 'auto');\n\tif (hasAuto >= 0) {\n\t\tallowedPlacements.forEach(function (obj) {\n\t\t\tif (placementVals.find((val) => val.search('^' + obj) !== -1) == null) {\n\t\t\t\tplacementVals.splice(hasAuto++, 1, obj as Placement);\n\t\t\t}\n\t\t});\n\t}\n\n\tconst popperPlacements = placementVals.map((_placement) => {\n\t\treturn getPopperClassPlacement(_placement, rtl.isRTL());\n\t});\n\n\tlet mainPlacement = popperPlacements.shift();\n\n\tconst bsModifier: Partial<Modifier<any, any>> = {\n\t\tname: 'bootstrapClasses',\n\t\tenabled: !!baseClass,\n\t\tphase: 'write',\n\t\tfn({ state }) {\n\t\t\tconst bsClassRegExp = new RegExp(baseClass + '(-[a-z]+)*', 'gi');\n\n\t\t\tconst popperElement: HTMLElement = state.elements.popper as HTMLElement;\n\t\t\tconst popperPlacement = state.placement;\n\n\t\t\tlet className = popperElement.className;\n\n\t\t\t// Remove old bootstrap classes\n\t\t\tclassName = className.replace(bsClassRegExp, '');\n\n\t\t\t// Add current placements\n\t\t\tclassName += ` ${getBootstrapBaseClassPlacement(baseClass!, popperPlacement)}`;\n\n\t\t\t// Remove multiple spaces\n\t\t\tclassName = className.trim().replace(spacesRegExp, ' ');\n\n\t\t\t// Reassign\n\t\t\tpopperElement.className = className;\n\t\t},\n\t};\n\n\treturn {\n\t\tplacement: mainPlacement,\n\t\tmodifiers: [\n\t\t\tbsModifier,\n\t\t\tflip,\n\t\t\tpreventOverflow,\n\t\t\tarrow,\n\t\t\t{\n\t\t\t\tenabled: true,\n\t\t\t\tname: 'flip',\n\t\t\t\toptions: {\n\t\t\t\t\tfallbackPlacements: popperPlacements,\n\t\t\t\t},\n\t\t\t},\n\t\t\t{\n\t\t\t\tenabled: true,\n\t\t\t\tname: 'preventOverflow',\n\t\t\t\tphase: 'main',\n\t\t\t\tfn: function () {},\n\t\t\t},\n\t\t],\n\t};\n}\n\nexport type Placement =\n\t| 'auto'\n\t| 'top'\n\t| 'bottom'\n\t| 'start'\n\t| 'left'\n\t| 'end'\n\t| 'right'\n\t| 'top-start'\n\t| 'top-left'\n\t| 'top-end'\n\t| 'top-right'\n\t| 'bottom-start'\n\t| 'bottom-left'\n\t| 'bottom-end'\n\t| 'bottom-right'\n\t| 'start-top'\n\t| 'left-top'\n\t| 'start-bottom'\n\t| 'left-bottom'\n\t| 'end-top'\n\t| 'right-top'\n\t| 'end-bottom'\n\t| 'right-bottom';\n\nexport type PlacementArray = Placement | Array<Placement> | string;\n\ninterface PositioningOptions {\n\thostElement: HTMLElement;\n\ttargetElement: HTMLElement;\n\tplacement: string | Placement | PlacementArray;\n\tappendToBody?: boolean;\n\tbaseClass?: string;\n\tupdatePopperOptions?: (options: Partial<Options>) => Partial<Options>;\n}\n\nfunction noop(arg) {\n\treturn arg;\n}\nexport function ngbPositioning(rtl: NgbRTL) {\n\tlet popperInstance: Instance | null = null;\n\n\treturn {\n\t\tcreatePopper(positioningOption: PositioningOptions) {\n\t\t\tif (!popperInstance) {\n\t\t\t\tconst updatePopperOptions = positioningOption.updatePopperOptions || noop;\n\t\t\t\tlet popperOptions = updatePopperOptions(getPopperOptions(positioningOption, rtl));\n\t\t\t\tpopperInstance = createPopperLite(\n\t\t\t\t\tpositioningOption.hostElement,\n\t\t\t\t\tpositioningOption.targetElement,\n\t\t\t\t\tpopperOptions,\n\t\t\t\t);\n\t\t\t}\n\t\t},\n\t\tupdate() {\n\t\t\tif (popperInstance) {\n\t\t\t\tpopperInstance.update();\n\t\t\t}\n\t\t},\n\t\tsetOptions(positioningOption: PositioningOptions) {\n\t\t\tif (popperInstance) {\n\t\t\t\tconst updatePopperOptions = positioningOption.updatePopperOptions || noop;\n\t\t\t\tlet popperOptions = updatePopperOptions(getPopperOptions(positioningOption, rtl));\n\t\t\t\tpopperInstance.setOptions(popperOptions);\n\t\t\t}\n\t\t},\n\t\tdestroy() {\n\t\t\tif (popperInstance) {\n\t\t\t\tpopperInstance.destroy();\n\t\t\t\tpopperInstance = null;\n\t\t\t}\n\t\t},\n\t};\n}\n"]}