1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 | 1× 1× 1× 1× 1× 1× 1× 1× 1× 12× 12× 12× 12× 12× 12× 12× 1× 1× 2× 2× 2× 2× 2× 2× 2× 1× 4× 4× 4× 1× 2× 2× 2× 2× 2× 2× 2× 2× 2× 2× 2× 2× 2× 2× 2× 2× 1× 1× 2× 1× 1× 20× 20× 6× 6× 1× 14× 14× 13× 1× 1× 7× 7× 7× 7× 1× 2× 2× 1× 8× 3× 3× 1× 1× 2× 2× 2× 2× 1× | // FIXME should handle all geo-referenced data, not just vector data goog.provide('ol.interaction.DragAndDrop'); goog.require('ol'); goog.require('ol.functions'); goog.require('ol.events'); goog.require('ol.events.Event'); goog.require('ol.events.EventType'); goog.require('ol.interaction.Interaction'); goog.require('ol.proj'); /** * @classdesc * Handles input of vector data by drag and drop. * * @constructor * @extends {ol.interaction.Interaction} * @fires ol.interaction.DragAndDrop.Event * @param {olx.interaction.DragAndDropOptions=} opt_options Options. * @api */ ol.interaction.DragAndDrop = function(opt_options) { var options = opt_options ? opt_options : {}; ol.interaction.Interaction.call(this, { handleEvent: ol.interaction.DragAndDrop.handleEvent }); /** * @private * @type {Array.<function(new: ol.format.Feature)>} */ this.formatConstructors_ = options.formatConstructors ? options.formatConstructors : []; /** * @private * @type {ol.proj.Projection} */ this.projection_ = options.projection ? ol.proj.get(options.projection) : null; /** * @private * @type {Array.<ol.EventsKey>} */ this.dropListenKeys_ = null; /** * @private * @type {ol.source.Vector} */ this.source_ = options.source || null; /** * @private * @type {Element} */ this.target = options.target ? options.target : null; }; ol.inherits(ol.interaction.DragAndDrop, ol.interaction.Interaction); /** * @param {Event} event Event. * @this {ol.interaction.DragAndDrop} * @private */ ol.interaction.DragAndDrop.handleDrop_ = function(event) { var files = event.dataTransfer.files; var i, ii, file; for (i = 0, ii = files.length; i < ii; ++i) { file = files.item(i); var reader = new FileReader(); reader.addEventListener(ol.events.EventType.LOAD, this.handleResult_.bind(this, file)); reader.readAsText(file); } }; /** * @param {Event} event Event. * @private */ ol.interaction.DragAndDrop.handleStop_ = function(event) { event.stopPropagation(); event.preventDefault(); event.dataTransfer.dropEffect = 'copy'; }; /** * @param {File} file File. * @param {Event} event Load event. * @private */ ol.interaction.DragAndDrop.prototype.handleResult_ = function(file, event) { var result = event.target.result; var map = this.getMap(); var projection = this.projection_; Eif (!projection) { var view = map.getView(); projection = view.getProjection(); } var formatConstructors = this.formatConstructors_; var features = []; var i, ii; for (i = 0, ii = formatConstructors.length; i < ii; ++i) { /** * Avoid "cannot instantiate abstract class" error. * @type {Function} */ var formatConstructor = formatConstructors[i]; /** * @type {ol.format.Feature} */ var format = new formatConstructor(); features = this.tryReadFeatures_(format, result, { featureProjection: projection }); Eif (features && features.length > 0) { break; } } if (this.source_) { this.source_.clear(); this.source_.addFeatures(features); } this.dispatchEvent( new ol.interaction.DragAndDrop.Event( ol.interaction.DragAndDrop.EventType_.ADD_FEATURES, file, features, projection)); }; /** * Handles the {@link ol.MapBrowserEvent map browser event} unconditionally and * neither prevents the browser default nor stops event propagation. * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event. * @return {boolean} `false` to stop event propagation. * @this {ol.interaction.DragAndDrop} * @api */ ol.interaction.DragAndDrop.handleEvent = ol.functions.TRUE; /** * @private */ ol.interaction.DragAndDrop.prototype.registerListeners_ = function() { var map = this.getMap(); if (map) { var dropArea = this.target ? this.target : map.getViewport(); this.dropListenKeys_ = [ ol.events.listen(dropArea, ol.events.EventType.DROP, ol.interaction.DragAndDrop.handleDrop_, this), ol.events.listen(dropArea, ol.events.EventType.DRAGENTER, ol.interaction.DragAndDrop.handleStop_, this), ol.events.listen(dropArea, ol.events.EventType.DRAGOVER, ol.interaction.DragAndDrop.handleStop_, this), ol.events.listen(dropArea, ol.events.EventType.DROP, ol.interaction.DragAndDrop.handleStop_, this) ]; } }; /** * @inheritDoc */ ol.interaction.DragAndDrop.prototype.setActive = function(active) { ol.interaction.Interaction.prototype.setActive.call(this, active); if (active) { this.registerListeners_(); } else { this.unregisterListeners_(); } }; /** * @inheritDoc */ ol.interaction.DragAndDrop.prototype.setMap = function(map) { this.unregisterListeners_(); ol.interaction.Interaction.prototype.setMap.call(this, map); Eif (this.getActive()) { this.registerListeners_(); } }; /** * @param {ol.format.Feature} format Format. * @param {string} text Text. * @param {olx.format.ReadOptions} options Read options. * @private * @return {Array.<ol.Feature>} Features. */ ol.interaction.DragAndDrop.prototype.tryReadFeatures_ = function(format, text, options) { try { return format.readFeatures(text, options); } catch (e) { return null; } }; /** * @private */ ol.interaction.DragAndDrop.prototype.unregisterListeners_ = function() { if (this.dropListenKeys_) { this.dropListenKeys_.forEach(ol.events.unlistenByKey); this.dropListenKeys_ = null; } }; /** * @enum {string} * @private */ ol.interaction.DragAndDrop.EventType_ = { /** * Triggered when features are added * @event ol.interaction.DragAndDrop.Event#addfeatures * @api */ ADD_FEATURES: 'addfeatures' }; /** * @classdesc * Events emitted by {@link ol.interaction.DragAndDrop} instances are instances * of this type. * * @constructor * @extends {ol.events.Event} * @implements {oli.interaction.DragAndDropEvent} * @param {ol.interaction.DragAndDrop.EventType_} type Type. * @param {File} file File. * @param {Array.<ol.Feature>=} opt_features Features. * @param {ol.proj.Projection=} opt_projection Projection. */ ol.interaction.DragAndDrop.Event = function(type, file, opt_features, opt_projection) { ol.events.Event.call(this, type); /** * The features parsed from dropped data. * @type {Array.<ol.Feature>|undefined} * @api */ this.features = opt_features; /** * The dropped file. * @type {File} * @api */ this.file = file; /** * The feature projection. * @type {ol.proj.Projection|undefined} * @api */ this.projection = opt_projection; }; ol.inherits(ol.interaction.DragAndDrop.Event, ol.events.Event); |