| 1 | /*
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| 2 | * Copyright 2021 Palantir Technologies, Inc. All rights reserved.
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 | // Popper placement utils
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| 17 | // ======================
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| 18 | /** Converts a full placement to one of the four positions by stripping text after the `-`. */
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| 19 | export function getBasePlacement(placement) {
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| 20 | return placement.split("-")[0];
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| 21 | }
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| 22 | /** Returns true if position is left or right. */
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| 23 | export function isVerticalPlacement(side) {
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| 24 | return ["left", "right"].indexOf(side) !== -1;
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| 25 | }
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| 26 | /** Returns the opposite position. */
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| 27 | export function getOppositePlacement(side) {
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| 28 | switch (side) {
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| 29 | case "top":
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| 30 | return "bottom";
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| 31 | case "left":
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| 32 | return "right";
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| 33 | case "bottom":
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| 34 | return "top";
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| 35 | default:
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| 36 | return "left";
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| 37 | }
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| 38 | }
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| 39 | /** Returns the CSS alignment keyword corresponding to given placement. */
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| 40 | export function getAlignment(placement) {
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| 41 | var align = placement.split("-")[1];
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| 42 | switch (align) {
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| 43 | case "start":
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| 44 | return "left";
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| 45 | case "end":
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| 46 | return "right";
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| 47 | default:
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| 48 | return "center";
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| 49 | }
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| 50 | }
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| 51 | // Popper modifiers
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| 52 | // ================
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| 53 | /** Modifier helper function to compute popper transform-origin based on arrow position */
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| 54 | export function getTransformOrigin(placement, arrowStyles) {
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| 55 | var basePlacement = getBasePlacement(placement);
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| 56 | if (arrowStyles === undefined) {
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| 57 | return isVerticalPlacement(basePlacement)
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| 58 | ? "".concat(getOppositePlacement(basePlacement), " ").concat(getAlignment(basePlacement))
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| 59 | : "".concat(getAlignment(basePlacement), " ").concat(getOppositePlacement(basePlacement));
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| 60 | }
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| 61 | else {
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| 62 | // const arrowSizeShift = state.elements.arrow.clientHeight / 2;
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| 63 | var arrowSizeShift = 30 / 2;
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| 64 | // can use keyword for dimension without the arrow, to ease computation burden.
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| 65 | // move origin by half arrow's height to keep it centered.
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| 66 | return isVerticalPlacement(basePlacement)
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| 67 | ? "".concat(getOppositePlacement(basePlacement), " ").concat(parseInt(arrowStyles.top, 10) + arrowSizeShift, "px")
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| 68 | : "".concat(parseInt(arrowStyles.left, 10) + arrowSizeShift, "px ").concat(getOppositePlacement(basePlacement));
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| 69 | }
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| 70 | }
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| 71 | //# sourceMappingURL=popperUtils.js.map |
| \ | No newline at end of file |