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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 | 1× 1× 1× 1× 1× 1× 1× 1500× 1500× 1500× 1500× 1500× 347× 166× 1499× 1× 1× 232× 412× 1× 18× 18× 30× 18× 1× 1514× 1514× 1514× 4012× 1× 805× 1× 62× 1× 9785× 1× 4341× 66× 4339× 4339× 4339× 1× 416× 1× 4326× 59× 4324× 4324× 4324× 1× 55× 55× 55× 218× 43× 12× 1× 461× 461× 461× 461× 461× 1× 11× 11× 4× 1× 4× 4× 4× 4× 7× 7× 3× 7× 1× 6299× 1× 292× 226× 5× 1× 1× 4808× 4808× 1× | /** * An implementation of Google Maps' MVCArray. * @see https://developers.google.com/maps/documentation/javascript/reference */ goog.provide('ol.Collection'); goog.require('ol'); goog.require('ol.AssertionError'); goog.require('ol.CollectionEventType'); goog.require('ol.Object'); goog.require('ol.events.Event'); /** * @classdesc * An expanded version of standard JS Array, adding convenience methods for * manipulation. Add and remove changes to the Collection trigger a Collection * event. Note that this does not cover changes to the objects _within_ the * Collection; they trigger events on the appropriate object, not on the * Collection as a whole. * * @constructor * @extends {ol.Object} * @fires ol.Collection.Event * @param {Array.<T>=} opt_array Array. * @param {olx.CollectionOptions=} opt_options Collection options. * @template T * @api */ ol.Collection = function(opt_array, opt_options) { ol.Object.call(this); var options = opt_options || {}; /** * @private * @type {boolean} */ this.unique_ = !!options.unique; /** * @private * @type {!Array.<T>} */ this.array_ = opt_array ? opt_array : []; if (this.unique_) { for (var i = 0, ii = this.array_.length; i < ii; ++i) { this.assertUnique_(this.array_[i], i); } } this.updateLength_(); }; ol.inherits(ol.Collection, ol.Object); /** * Remove all elements from the collection. * @api */ ol.Collection.prototype.clear = function() { while (this.getLength() > 0) { this.pop(); } }; /** * Add elements to the collection. This pushes each item in the provided array * to the end of the collection. * @param {!Array.<T>} arr Array. * @return {ol.Collection.<T>} This collection. * @api */ ol.Collection.prototype.extend = function(arr) { var i, ii; for (i = 0, ii = arr.length; i < ii; ++i) { this.push(arr[i]); } return this; }; /** * Iterate over each element, calling the provided callback. * @param {function(this: S, T, number, Array.<T>): *} f The function to call * for every element. This function takes 3 arguments (the element, the * index and the array). The return value is ignored. * @param {S=} opt_this The object to use as `this` in `f`. * @template S * @api */ ol.Collection.prototype.forEach = function(f, opt_this) { var fn = (opt_this) ? f.bind(opt_this) : f; var array = this.array_; for (var i = 0, ii = array.length; i < ii; ++i) { fn(array[i], i, array); } }; /** * Get a reference to the underlying Array object. Warning: if the array * is mutated, no events will be dispatched by the collection, and the * collection's "length" property won't be in sync with the actual length * of the array. * @return {!Array.<T>} Array. * @api */ ol.Collection.prototype.getArray = function() { return this.array_; }; /** * Get the element at the provided index. * @param {number} index Index. * @return {T} Element. * @api */ ol.Collection.prototype.item = function(index) { return this.array_[index]; }; /** * Get the length of this collection. * @return {number} The length of the array. * @observable * @api */ ol.Collection.prototype.getLength = function() { return /** @type {number} */ (this.get(ol.Collection.Property_.LENGTH)); }; /** * Insert an element at the provided index. * @param {number} index Index. * @param {T} elem Element. * @api */ ol.Collection.prototype.insertAt = function(index, elem) { if (this.unique_) { this.assertUnique_(elem); } this.array_.splice(index, 0, elem); this.updateLength_(); this.dispatchEvent( new ol.Collection.Event(ol.CollectionEventType.ADD, elem)); }; /** * Remove the last element of the collection and return it. * Return `undefined` if the collection is empty. * @return {T|undefined} Element. * @api */ ol.Collection.prototype.pop = function() { return this.removeAt(this.getLength() - 1); }; /** * Insert the provided element at the end of the collection. * @param {T} elem Element. * @return {number} New length of the collection. * @api */ ol.Collection.prototype.push = function(elem) { if (this.unique_) { this.assertUnique_(elem); } var n = this.getLength(); this.insertAt(n, elem); return this.getLength(); }; /** * Remove the first occurrence of an element from the collection. * @param {T} elem Element. * @return {T|undefined} The removed element or undefined if none found. * @api */ ol.Collection.prototype.remove = function(elem) { var arr = this.array_; var i, ii; for (i = 0, ii = arr.length; i < ii; ++i) { if (arr[i] === elem) { return this.removeAt(i); } } return undefined; }; /** * Remove the element at the provided index and return it. * Return `undefined` if the collection does not contain this index. * @param {number} index Index. * @return {T|undefined} Value. * @api */ ol.Collection.prototype.removeAt = function(index) { var prev = this.array_[index]; this.array_.splice(index, 1); this.updateLength_(); this.dispatchEvent( new ol.Collection.Event(ol.CollectionEventType.REMOVE, prev)); return prev; }; /** * Set the element at the provided index. * @param {number} index Index. * @param {T} elem Element. * @api */ ol.Collection.prototype.setAt = function(index, elem) { var n = this.getLength(); if (index < n) { if (this.unique_) { this.assertUnique_(elem, index); } var prev = this.array_[index]; this.array_[index] = elem; this.dispatchEvent( new ol.Collection.Event(ol.CollectionEventType.REMOVE, prev)); this.dispatchEvent( new ol.Collection.Event(ol.CollectionEventType.ADD, elem)); } else { var j; for (j = n; j < index; ++j) { this.insertAt(j, undefined); } this.insertAt(index, elem); } }; /** * @private */ ol.Collection.prototype.updateLength_ = function() { this.set(ol.Collection.Property_.LENGTH, this.array_.length); }; /** * @private * @param {T} elem Element. * @param {number=} opt_except Optional index to ignore. */ ol.Collection.prototype.assertUnique_ = function(elem, opt_except) { for (var i = 0, ii = this.array_.length; i < ii; ++i) { if (this.array_[i] === elem && i !== opt_except) { throw new ol.AssertionError(58); } } }; /** * @enum {string} * @private */ ol.Collection.Property_ = { LENGTH: 'length' }; /** * @classdesc * Events emitted by {@link ol.Collection} instances are instances of this * type. * * @constructor * @extends {ol.events.Event} * @implements {oli.Collection.Event} * @param {ol.CollectionEventType} type Type. * @param {*=} opt_element Element. */ ol.Collection.Event = function(type, opt_element) { ol.events.Event.call(this, type); /** * The element that is added to or removed from the collection. * @type {*} * @api */ this.element = opt_element; }; ol.inherits(ol.Collection.Event, ol.events.Event); |