| 1 | /*
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| 2 | * Copyright 2016 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 | var TAB_KEY_CODE = 9;
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| 17 | /* istanbul ignore next */
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| 18 | /**
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| 19 | * A nifty little class that maintains event handlers to add a class to the container element
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| 20 | * when entering "mouse mode" (on a `mousedown` event) and remove it when entering "keyboard mode"
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| 21 | * (on a `tab` key `keydown` event).
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| 22 | */
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| 23 | var InteractionModeEngine = /** @class */ (function () {
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| 24 | function InteractionModeEngine(container, className) {
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| 25 | var _this = this;
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| 26 | this.container = container;
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| 27 | this.className = className;
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| 28 | this.isRunning = false;
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| 29 | this.handleKeyDown = function (e) {
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| 30 | // HACKHACK: https://github.com/palantir/blueprint/issues/4165
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| 31 | // eslint-disable-next-line deprecation/deprecation
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| 32 | if (e.which === TAB_KEY_CODE) {
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| 33 | _this.reset();
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| 34 | _this.container.addEventListener("mousedown", _this.handleMouseDown);
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| 35 | }
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| 36 | };
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| 37 | this.handleMouseDown = function () {
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| 38 | _this.reset();
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| 39 | _this.container.classList.add(_this.className);
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| 40 | // HACKHACK: see https://github.com/palantir/blueprint/issues/4342
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| 41 | _this.container.addEventListener("keydown", _this.handleKeyDown);
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| 42 | };
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| 43 | }
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| 44 | /** Returns whether the engine is currently running. */
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| 45 | InteractionModeEngine.prototype.isActive = function () {
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| 46 | return this.isRunning;
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| 47 | };
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| 48 | /** Enable behavior which applies the given className when in mouse mode. */
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| 49 | InteractionModeEngine.prototype.start = function () {
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| 50 | this.container.addEventListener("mousedown", this.handleMouseDown);
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| 51 | this.isRunning = true;
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| 52 | };
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| 53 | /** Disable interaction mode behavior and remove className from container. */
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| 54 | InteractionModeEngine.prototype.stop = function () {
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| 55 | this.reset();
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| 56 | this.isRunning = false;
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| 57 | };
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| 58 | InteractionModeEngine.prototype.reset = function () {
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| 59 | this.container.classList.remove(this.className);
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| 60 | // HACKHACK: see https://github.com/palantir/blueprint/issues/4342
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| 61 | this.container.removeEventListener("keydown", this.handleKeyDown);
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| 62 | this.container.removeEventListener("mousedown", this.handleMouseDown);
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| 63 | };
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| 64 | return InteractionModeEngine;
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| 65 | }());
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| 66 | export { InteractionModeEngine };
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| 67 | //# sourceMappingURL=interactionMode.js.map |
| \ | No newline at end of file |