hash-state.js (2287B)
1 import L from 'leaflet'; 2 import '~/lib/leaflet.hashState/leaflet.hashState'; 3 4 L.Control.JNX.include(L.Mixin.HashState); 5 L.Control.JNX.include({ 6 stateChangeEvents: ['settingschange'], 7 8 serializeState: function() { 9 let state; 10 if (this._areaSelector) { 11 const bounds = this._areaSelector.getBounds(); 12 state = [ 13 bounds.getSouth().toFixed(5), 14 bounds.getWest().toFixed(5), 15 bounds.getNorth().toFixed(5), 16 bounds.getEast().toFixed(5), 17 this.zoomLevel() ?? '', 18 this.fixZoom() ? '1' : '0', 19 ]; 20 } 21 return state; 22 }, 23 24 unserializeState: function(values) { 25 function validateFloat(value) { 26 value = parseFloat(value); 27 if (isNaN(value)) { 28 throw new Error('INVALID VALUE'); 29 } 30 return value; 31 } 32 33 function validateFloatRange(value, min, max) { 34 value = validateFloat(value); 35 if (value < min || value > max) { 36 throw new Error('INVALID VALUE'); 37 } 38 return value; 39 } 40 41 if (values && values.length >= 4) { 42 let south, west, north, east; 43 try { 44 south = validateFloatRange(values[0], -86, 86); 45 west = validateFloat(values[1]); 46 north = validateFloatRange(values[2], -86, 86); 47 east = validateFloat(values[3]); 48 } catch (e) { 49 if (e.message === 'INVALID VALUE') { 50 return false; 51 } 52 throw e; 53 } 54 this.setAreaSelector([[south, west], [north, east]]); 55 56 let zoomLevel = parseInt(values[4], 10); 57 if (!this.zoomChoices()?.[zoomLevel]) { 58 zoomLevel = null; 59 } 60 this.zoomLevel(zoomLevel); 61 62 this.fixZoom(values[5] === '1'); 63 64 return true; 65 } 66 return false; 67 } 68 } 69 );