| 1 | const Constants = require('../constants');
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| 2 |
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| 3 | module.exports = {
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| 4 | isOfMetaType: function(type) {
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| 5 | return function(e) {
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| 6 | const featureTarget = e.featureTarget;
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| 7 | if (!featureTarget) return false;
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| 8 | if (!featureTarget.properties) return false;
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| 9 | return featureTarget.properties.meta === type;
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| 10 | };
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| 11 | },
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| 12 | isShiftMousedown: function(e) {
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| 13 | if (!e.originalEvent) return false;
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| 14 | if (!e.originalEvent.shiftKey) return false;
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| 15 | return e.originalEvent.button === 0;
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| 16 | },
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| 17 | isActiveFeature: function(e) {
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| 18 | if (!e.featureTarget) return false;
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| 19 | if (!e.featureTarget.properties) return false;
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| 20 | return e.featureTarget.properties.active === Constants.activeStates.ACTIVE &&
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| 21 | e.featureTarget.properties.meta === Constants.meta.FEATURE;
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| 22 | },
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| 23 | isInactiveFeature: function(e) {
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| 24 | if (!e.featureTarget) return false;
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| 25 | if (!e.featureTarget.properties) return false;
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| 26 | return e.featureTarget.properties.active === Constants.activeStates.INACTIVE &&
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| 27 | e.featureTarget.properties.meta === Constants.meta.FEATURE;
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| 28 | },
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| 29 | noTarget: function(e) {
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| 30 | return e.featureTarget === undefined;
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| 31 | },
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| 32 | isFeature: function(e) {
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| 33 | if (!e.featureTarget) return false;
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| 34 | if (!e.featureTarget.properties) return false;
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| 35 | return e.featureTarget.properties.meta === Constants.meta.FEATURE;
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| 36 | },
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| 37 | isVertex: function(e) {
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| 38 | const featureTarget = e.featureTarget;
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| 39 | if (!featureTarget) return false;
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| 40 | if (!featureTarget.properties) return false;
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| 41 | return featureTarget.properties.meta === Constants.meta.VERTEX;
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| 42 | },
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| 43 | isShiftDown: function(e) {
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| 44 | if (!e.originalEvent) return false;
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| 45 | return e.originalEvent.shiftKey === true;
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| 46 | },
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| 47 | isEscapeKey: function(e) {
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| 48 | return e.keyCode === 27;
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| 49 | },
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| 50 | isEnterKey: function(e) {
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| 51 | return e.keyCode === 13;
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| 52 | },
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| 53 | true: function() {
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| 54 | return true;
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| 55 | }
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| 56 | };
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