mirror of
https://github.com/Esri/offline-editor-js.git
synced 2025-12-15 15:20:05 +00:00
1327 lines
66 KiB
JavaScript
1327 lines
66 KiB
JavaScript
define([
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"dojo/Evented",
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"dojo/_base/Deferred",
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"dojo/DeferredList",
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"dojo/promise/all",
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"dojo/_base/declare",
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"dojo/_base/array",
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"dojo/dom-attr",
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"dojo/dom-style",
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"dojo/query",
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"esri/config",
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"esri/layers/GraphicsLayer",
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"esri/graphic",
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"esri/symbols/SimpleMarkerSymbol",
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"esri/symbols/SimpleLineSymbol",
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"esri/symbols/SimpleFillSymbol",
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"esri/urlUtils"],
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function (Evented, Deferred, DeferredList, all, declare, array, domAttr, domStyle, query,
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esriConfig, GraphicsLayer, Graphic, SimpleMarkerSymbol, SimpleLineSymbol, SimpleFillSymbol, urlUtils) {
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"use strict";
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return declare("O.esri.Edit.OfflineFeaturesManager", [Evented],
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{
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_onlineStatus: "online",
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_featureLayers: {},
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_editStore: new O.esri.Edit.EditStore(),
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ONLINE: "online", // all edits will directly go to the server
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OFFLINE: "offline", // edits will be enqueued
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RECONNECTING: "reconnecting", // sending stored edits to the server
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attachmentsStore: null, // indexedDB for storing attachments
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proxyPath: null, // by default we use CORS and therefore proxyPath is null
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// Database properties
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DB_NAME: "features_store", // Sets the database name.
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DB_OBJECTSTORE_NAME: "features",// Represents an object store that allows access to a set of data in the IndexedDB database
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// manager emits event when...
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events: {
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EDITS_SENT: "edits-sent", // ...whenever any edit is actually sent to the server
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EDITS_ENQUEUED: "edits-enqueued", // ...when an edit is enqueued (and not sent to the server)
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EDITS_ENQUEUED_ERROR: "edits-enqueued-error", // ...when there is an error during the queing process
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EDITS_SENT_ERROR: "edits-sent-error", // ...there was a problem with one or more edits!
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ALL_EDITS_SENT: "all-edits-sent", // ...after going online and there are no pending edits in the queue
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ATTACHMENT_ENQUEUED: "attachment-enqueued",
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ATTACHMENTS_SENT: "attachments-sent"
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},
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/**
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* Need to call this method only if you want to support offline attachments
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* it is optional
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* @param callback(success)
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* @returns void
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*/
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initAttachments: function (callback) {
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callback = callback || function (success) {
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console.log("attachments inited ", success ? "ok" : "failed");
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};
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if (!this._checkFileAPIs()) {
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return callback(false, "File APIs not supported");
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}
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try {
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this.attachmentsStore = new O.esri.Edit.AttachmentsStore();
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if (/*false &&*/ this.attachmentsStore.isSupported()) {
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this.attachmentsStore.init(callback);
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}
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else {
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return callback(false, "indexedDB not supported");
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}
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}
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catch (err) {
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console.log("problem! " + err.toString());
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}
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},
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/**
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* Overrides a feature layer. Call this AFTER the FeatureLayer's 'update-end' event.
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* IMPORTANT: If options are specified they will be saved to the database. Any complex
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* objects such as [esri.Graphic] will need to be serialized or you will get an error.
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* @param layer
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* @param updateEndEvent The FeatureLayer's update-end event object
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* @param callback {true, null} or {false, errorString} Traps whether or not the database initialized
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* @param options Optional configuration Object. Added @ v2.5
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* @returns deferred
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*/
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extend: function (layer, callback, options) {
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var self = this;
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// Initialize the database as well as set offline data.
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this._initializeDB(options,callback);
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// we keep track of the FeatureLayer object
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this._featureLayers[layer.url] = layer;
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// replace the applyEdits() method
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layer._applyEdits = layer.applyEdits;
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// attachments
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layer._addAttachment = layer.addAttachment;
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layer._queryAttachmentInfos = layer.queryAttachmentInfos;
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layer._deleteAttachments = layer.deleteAttachments;
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/*
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operations supported offline:
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1. add a new attachment to an existing feature (DONE)
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2. add a new attachment to a new feature (DONE)
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3. remove an attachment that is already in the server... (NOT YET)
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4. remove an attachment that is not in the server yet (DONE)
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5. update an existing attachment to an existing feature (NOT YET)
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6. update a new attachment (NOT YET)
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concerns:
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- manage the relationship between offline features and attachments: what if the user wants to add
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an attachment to a feature that is still offline? we need to keep track of objectids so that when
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the feature is sent to the server and receives a final objectid we replace the temporary negative id
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by its final objectid (DONE)
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- what if the user deletes an offline feature that had offline attachments? we need to discard the attachment (DONE)
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pending tasks:
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- check for hasAttachments attribute in the FeatureLayer (NOT YET)
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*/
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//
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// attachments
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//
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layer.queryAttachmentInfos = function (objectId, callback, errback) {
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if (self.getOnlineStatus() === self.ONLINE) {
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var def = this._queryAttachmentInfos(objectId,
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function () {
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console.log(arguments);
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self.emit(self.events.ATTACHMENTS_INFO, arguments);
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callback && callback.apply(this, arguments);
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},
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errback);
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return def;
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}
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if (!self.attachmentsStore) {
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console.log("in order to support attachments you need to call initAttachments() method of offlineFeaturesManager");
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return;
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}
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// will only return LOCAL attachments
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var deferred = new Deferred();
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self.attachmentsStore.getAttachmentsByFeatureId(this.url, objectId, function (attachments) {
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callback && callback(attachments);
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deferred.resolve(attachments);
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});
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return deferred;
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};
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layer.addAttachment = function (objectId, formNode, callback, errback) {
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if (self.getOnlineStatus() === self.ONLINE) {
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return this._addAttachment(objectId, formNode,
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function () {
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console.log(arguments);
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self.emit(self.events.ATTACHMENTS_SENT, arguments);
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callback && callback.apply(this, arguments);
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},
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function (err) {
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console.log("addAttachment: " + err);
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errback && errback.apply(this, arguments);
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}
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);
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}
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if (!self.attachmentsStore) {
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console.log("in order to support attachments you need to call initAttachments() method of offlineFeaturesManager");
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return;
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}
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var files = this._getFilesFromForm(formNode);
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var file = files[0]; // addAttachment can only add one file, so the rest -if any- are ignored
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var deferred = new Deferred();
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var attachmentId = this._getNextTempId();
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self.attachmentsStore.store(this.url, attachmentId, objectId, file, function (success, newAttachment) {
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var returnValue = {attachmentId: attachmentId, objectId: objectId, success: success};
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if (success) {
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self.emit(self.events.ATTACHMENT_ENQUEUED, returnValue);
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callback && callback(returnValue);
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deferred.resolve(returnValue);
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// replace the default URL that is set by attachmentEditor with the local file URL
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var attachmentUrl = this._url.path + "/" + objectId + "/attachments/" + attachmentId;
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var attachmentElement = query("[href=" + attachmentUrl + "]");
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attachmentElement.attr("href", newAttachment.url);
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}
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else {
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returnValue.error = "can't store attachment";
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errback && errback(returnValue);
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deferred.reject(returnValue);
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}
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}.bind(this));
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return deferred;
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};
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layer.deleteAttachments = function (objectId, attachmentsIds, callback, errback) {
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if (self.getOnlineStatus() === self.ONLINE) {
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var def = this._deleteAttachments(objectId, attachmentsIds,
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function () {
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callback && callback.apply(this, arguments);
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},
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function (err) {
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console.log("deleteAttachments: " + err);
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errback && errback.apply(this, arguments);
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});
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return def;
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}
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if (!self.attachmentsStore) {
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console.log("in order to support attachments you need to call initAttachments() method of offlineFeaturesManager");
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return;
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}
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// case 1.- it is a new attachment
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// case 2.- it is an already existing attachment
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// only case 1 is supported right now
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// asynchronously delete each of the attachments
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var promises = [];
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attachmentsIds.forEach(function (attachmentId) {
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attachmentId = parseInt(attachmentId, 10); // to number
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console.assert(attachmentId < 0, "we only support deleting local attachments");
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var deferred = new Deferred();
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self.attachmentsStore.delete(attachmentId, function (success) {
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var result = {objectId: objectId, attachmentId: attachmentId, success: success};
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deferred.resolve(result);
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});
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promises.push(deferred);
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}, this);
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// call callback once all deletes have finished
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var allPromises = all(promises);
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allPromises.then(function (results) {
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callback && callback(results);
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});
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return allPromises;
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};
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//
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// other functions
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//
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/**
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* Overrides the ArcGIS API for JavaSccript applyEdits() method.
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* @param adds Creates a new edit entry.
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* @param updates Updates an existing entry.
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* @param deletes Deletes an existing entry.
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* @param callback Called when the operation is complete.
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* @param errback An error object is returned if an error occurs
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* @returns {*} deferred
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* @throws EDITS_ENQUEUED if all edits successfully stored while offline
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* @throws EDITS_ENQUEUED_ERROR if there was an error while storing an edit while offline
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*/
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layer.applyEdits = function (adds, updates, deletes, callback, errback) {
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// inside this method, 'this' will be the FeatureLayer
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// and 'self' will be the offlineFeatureLayer object
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var promises = [];
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if (self.getOnlineStatus() === self.ONLINE) {
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var def = this._applyEdits(adds, updates, deletes,
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function () {
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self.emit(self.events.EDITS_SENT, arguments);
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callback && callback.apply(this, arguments);
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},
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errback);
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return def;
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}
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var deferred = new Deferred();
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var results = {addResults: [], updateResults: [], deleteResults: []};
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var updatesMap = {};
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this.onBeforeApplyEdits(adds, updates, deletes);
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adds = adds || [];
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adds.forEach(function (addEdit) {
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var deferred = new Deferred();
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var objectId = this._getNextTempId();
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addEdit.attributes[this.objectIdField] = objectId;
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self._editStore.pushEdit(self._editStore.ADD, this.url, addEdit, function (result, error) {
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result == true ? deferred.resolve(result) : deferred.reject(error);
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});
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results.addResults.push({success: true, error: null, objectId: objectId});
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var phantomAdd = new Graphic(
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addEdit.geometry,
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self._getPhantomSymbol(addEdit.geometry, self._editStore.ADD),
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{
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objectId: objectId
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});
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// Add phantom graphic to the layer
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this._phantomLayer.add(phantomAdd);
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// Add phantom graphic to the database
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self._editStore.pushPhantomGraphic(phantomAdd, function (result) {
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if (!result)console.log("There was a problem adding phantom graphic id: " + objectId);
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console.log("Phantom graphic " + objectId + " added to database as an add.");
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});
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domAttr.set(phantomAdd.getNode(), "stroke-dasharray", "10,4");
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domStyle.set(phantomAdd.getNode(), "pointer-events", "none");
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promises.push(deferred);
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}, this);
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updates = updates || [];
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updates.forEach(function (updateEdit) {
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var deferred = new Deferred();
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var objectId = updateEdit.attributes[this.objectIdField];
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updatesMap[objectId] = updateEdit;
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self._editStore.pushEdit(self._editStore.UPDATE, this.url, updateEdit, function (result, error) {
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result == true ? deferred.resolve(result) : deferred.reject(error);
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});
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results.updateResults.push({success: true, error: null, objectId: objectId});
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var phantomUpdate = new Graphic(
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updateEdit.geometry,
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self._getPhantomSymbol(updateEdit.geometry, self._editStore.UPDATE),
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{
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objectId: objectId
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});
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this._phantomLayer.add(phantomUpdate);
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// Add phantom graphic to the database
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self._editStore.pushPhantomGraphic(phantomUpdate, function (result) {
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if (!result)console.log("There was a problem adding phantom graphic id: " + objectId);
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console.log("Phantom graphic " + objectId + " added to database as an update.");
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});
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domAttr.set(phantomUpdate.getNode(), "stroke-dasharray", "5,2");
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domStyle.set(phantomUpdate.getNode(), "pointer-events", "none");
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promises.push(deferred);
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}, this);
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deletes = deletes || [];
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deletes.forEach(function (deleteEdit) {
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var deferred = new Deferred();
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var objectId = deleteEdit.attributes[this.objectIdField];
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self._editStore.pushEdit(self._editStore.DELETE, this.url, deleteEdit, function (result, error) {
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result == true ? deferred.resolve(result) : deferred.reject(error);
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});
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results.deleteResults.push({success: true, error: null, objectId: objectId});
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var phantomDelete = new Graphic(
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deleteEdit.geometry,
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self._getPhantomSymbol(deleteEdit.geometry, self._editStore.DELETE),
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{
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objectId: objectId
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});
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this._phantomLayer.add(phantomDelete);
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// Add phantom graphic to the database
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self._editStore.pushPhantomGraphic(phantomDelete, function (result) {
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if (!result)console.log("There was a problem adding phantom graphic id: " + objectId);
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console.log("Phantom graphic " + objectId + " added to database as a deletion.");
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});
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domAttr.set(phantomDelete.getNode(), "stroke-dasharray", "4,4");
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domStyle.set(phantomDelete.getNode(), "pointer-events", "none");
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if (self.attachmentsStore) {
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// delete local attachments of this feature, if any... we just launch the delete and don't wait for it to complete
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self.attachmentsStore.deleteAttachmentsByFeatureId(this.url, objectId, function (deletedCount) {
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console.log("deleted", deletedCount, "attachments of feature", objectId);
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});
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}
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promises.push(deferred);
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}, this);
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all(promises).then(function (r) {
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// Make sure all edits were successful. If not throw an error.
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var success = true;
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var length = r.length;
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for (var v = 0; v < length; v++) {
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if (r[v] == false) success = false;
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}
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/* we already pushed the edits into the database, now we let the FeatureLayer to do the local updating of the layer graphics */
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setTimeout(function () {
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this._editHandler(results, adds, updatesMap, callback, errback, deferred);
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success == true ? self.emit(self.events.EDITS_ENQUEUED, results) : self.emit(self.events.EDITS_ENQUEUED_ERROR, results);
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}.bind(this), 0);
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return deferred;
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}.bind(this));
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}; // layer.applyEdits()
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/**
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* Converts an array of graphics/features into JSON
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* @param features
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* @param updateEndEvent The layer's 'update-end' event
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* @param callback
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*/
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layer.convertGraphicLayerToJSON = function (features, updateEndEvent, callback) {
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var layerDefinition = {};
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layerDefinition.objectIdFieldName = updateEndEvent.target.objectIdField;
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layerDefinition.globalIdFieldName = updateEndEvent.target.globalIdField;
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layerDefinition.geometryType = updateEndEvent.target.geometryType;
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layerDefinition.spatialReference = updateEndEvent.target.spatialReference;
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layerDefinition.fields = updateEndEvent.target.fields;
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var length = features.length;
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var jsonArray = [];
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for (var i = 0; i < length; i++) {
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var jsonGraphic = features[i].toJson();
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jsonArray.push(jsonGraphic);
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if (i == (length - 1)) {
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var featureJSON = JSON.stringify(jsonArray);
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var layerDefJSON = JSON.stringify(layerDefinition);
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callback(featureJSON, layerDefJSON);
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break;
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}
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}
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};
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/**
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* Retrieves f=json from the feature layer
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* @param url FeatureLayer's URL
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* @param callback
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* @private
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*/
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layer.getFeatureLayerJSON = function (url, callback) {
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require(["esri/request"], function (esriRequest) {
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var request = esriRequest({
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url: url,
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content: {f: "json"},
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handleAs: "json",
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callbackParamName: "callback"
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});
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request.then(function (response) {
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console.log("Success: ", response);
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callback(true, response);
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}, function (error) {
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console.log("Error: ", error.message);
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callback(false, error.message);
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});
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})
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};
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/**
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* Serialize the feature layer graphics
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* @param features
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* @param callback
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*/
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layer.convertFeatureGraphicsToJSON = function (features, callback) {
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var length = features.length;
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var jsonArray = [];
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for (var i = 0; i < length; i++) {
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var jsonGraphic = features[i].toJson();
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jsonArray.push(jsonGraphic);
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if (i == (length - 1)) {
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var featureJSON = JSON.stringify(jsonArray);
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callback(featureJSON);
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break;
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}
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}
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};
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/**
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* Sets the phantom layer with new features.
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* Used to restore PhantomGraphicsLayer after offline restart
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* @param graphicsArray an array of Graphics
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*/
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layer.setPhantomLayerGraphics = function (graphicsArray) {
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var length = graphicsArray.length;
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if (length > 0) {
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for (var i = 0; i < length; i++) {
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var graphic = new Graphic(graphicsArray[i]);
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this._phantomLayer.add(graphic);
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}
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}
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};
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/**
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* Returns the array of graphics from the phantom graphics layer.
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* This layer identifies features that have been modified
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* while offline.
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* @returns {array}
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*/
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layer.getPhantomLayerGraphics = function (callback) {
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//return layer._phantomLayer.graphics;
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var graphics = layer._phantomLayer.graphics;
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var length = layer._phantomLayer.graphics.length;
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var jsonArray = [];
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for (var i = 0; i < length; i++) {
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var jsonGraphic = graphics[i].toJson();
|
|
jsonArray.push(jsonGraphic);
|
|
if (i == (length - 1)) {
|
|
var graphicsJSON = JSON.stringify(jsonArray);
|
|
callback(graphicsJSON);
|
|
break;
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Returns an array of phantom graphics from the database.
|
|
* @param callback callback (true, array) or (false, errorString)
|
|
*/
|
|
layer.getPhantomGraphicsArray = function(callback){
|
|
self._editStore.getPhantomGraphicsArray(function(array,message){
|
|
if(message == "end"){
|
|
callback(true,array);
|
|
}
|
|
else{
|
|
callback(false,message);
|
|
}
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Returns the approximate size of the database in bytes
|
|
* @param callback callback({usage}, error) Whereas, the usage Object is {sizeBytes: number, editCount: number}
|
|
*/
|
|
layer.getUsage = function(callback){
|
|
self._editStore.getUsage(function(usage,error){
|
|
callback(usage,error);
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Create a featureDefinition
|
|
* @param featureLayer
|
|
* @param featuresArr
|
|
* @param geometryType
|
|
* @param callback
|
|
*/
|
|
layer.getFeatureDefinition = function (/* Object */ featureLayer, /* Array */ featuresArr, /* String */ geometryType, callback) {
|
|
|
|
var featureDefinition = {
|
|
"layerDefinition": featureLayer,
|
|
"featureSet": {
|
|
"features": featuresArr,
|
|
"geometryType": geometryType
|
|
}
|
|
|
|
};
|
|
|
|
callback(featureDefinition);
|
|
};
|
|
|
|
/**
|
|
* Returns an interable array of all edits stored in the database
|
|
* @param callback (true, array) or (false, errorString)
|
|
*/
|
|
layer.getAllEditsArray = function(callback){
|
|
self._editStore.getAllEditsArray(function(array,message){
|
|
if(message == "end"){
|
|
callback(true,array);
|
|
}
|
|
else{
|
|
callback(false,message);
|
|
}
|
|
})
|
|
};
|
|
|
|
/* internal methods */
|
|
|
|
layer._getFilesFromForm = function (formNode) {
|
|
var files = [];
|
|
var inputNodes = array.filter(formNode.elements, function (node) {
|
|
return node.type === "file";
|
|
});
|
|
inputNodes.forEach(function (inputNode) {
|
|
files.push.apply(files, inputNode.files);
|
|
}, this);
|
|
return files;
|
|
};
|
|
|
|
layer._replaceFeatureIds = function (tempObjectIds, newObjectIds, callback) {
|
|
console.log("replacing ids of attachments", tempObjectIds, newObjectIds);
|
|
console.assert(tempObjectIds.length === newObjectIds.length, "arrays must be the same length");
|
|
|
|
if (!tempObjectIds.length) {
|
|
console.log("no ids to replace!");
|
|
callback(0);
|
|
}
|
|
|
|
var i, n = tempObjectIds.length;
|
|
var count = n;
|
|
var successCount = 0;
|
|
for (i = 0; i < n; i++) {
|
|
self.attachmentsStore.replaceFeatureId(this.url, tempObjectIds[i], newObjectIds[i], function (success) {
|
|
--count;
|
|
successCount += (success ? 1 : 0);
|
|
if (count === 0) {
|
|
callback(successCount);
|
|
}
|
|
}.bind(this));
|
|
}
|
|
};
|
|
|
|
// we need to identify ADDs before sending them to the server
|
|
// we assign temporary ids (using negative numbers to distinguish them from real ids)
|
|
layer._nextTempId = -1;
|
|
layer._getNextTempId = function () {
|
|
return this._nextTempId--;
|
|
};
|
|
|
|
function _initPhantomLayer() {
|
|
try {
|
|
layer._phantomLayer = new GraphicsLayer({opacity: 0.8});
|
|
layer._map.addLayer(layer._phantomLayer);
|
|
}
|
|
catch (err) {
|
|
console.log("Unable to init PhantomLayer");
|
|
}
|
|
}
|
|
|
|
_initPhantomLayer();
|
|
|
|
}, // extend
|
|
|
|
/**
|
|
* Forces library into an offline state. Any edits applied during this condition will be stored locally
|
|
*/
|
|
goOffline: function () {
|
|
console.log("offlineFeatureManager going offline");
|
|
this._onlineStatus = this.OFFLINE;
|
|
},
|
|
|
|
/**
|
|
* Forces library to return to an online state. If there are pending edits,
|
|
* an attempt will be made to sync them with the remote feature server
|
|
* @param callback callback( boolean, errors )
|
|
*/
|
|
goOnline: function (callback) {
|
|
console.log("offlineFeaturesManager going online");
|
|
this._onlineStatus = this.RECONNECTING;
|
|
this._replayStoredEdits(function (success, responses) {
|
|
var result = {features: {success: success, responses: responses}};
|
|
if (this.attachmentsStore != null) {
|
|
console.log("sending attachments");
|
|
this._sendStoredAttachments(function (success, responses) {
|
|
this._onlineStatus = this.ONLINE;
|
|
result.attachments = {success: success, responses: responses};
|
|
callback && callback(result);
|
|
}.bind(this));
|
|
}
|
|
else {
|
|
this._onlineStatus = this.ONLINE;
|
|
callback && callback(result);
|
|
}
|
|
}.bind(this));
|
|
},
|
|
|
|
/**
|
|
* Determines if offline or online condition exists
|
|
* @returns {string} ONLINE or OFFLINE
|
|
*/
|
|
getOnlineStatus: function () {
|
|
return this._onlineStatus;
|
|
},
|
|
|
|
/* internal methods */
|
|
|
|
/**
|
|
* Intialize the database and push featureLayer JSON to DB if required
|
|
* @param options
|
|
* @param callback
|
|
* @private
|
|
*/
|
|
_initializeDB: function(options,callback){
|
|
|
|
var editStore = this._editStore;
|
|
|
|
// Configure the database
|
|
editStore.dbName = this.DB_NAME;
|
|
editStore.objectStoreName = this.DB_OBJECTSTORE_NAME;
|
|
|
|
// Attempt to initialize the database
|
|
editStore.init(function (result, error) {
|
|
|
|
////////////////////////////////////////////////////
|
|
// OFFLINE RESTART CONFIGURATION
|
|
// Added @ v2.5
|
|
//
|
|
// Configure database for offline restart
|
|
// If options Object is not defined the do nothing.
|
|
//
|
|
//
|
|
|
|
if (typeof options == "object" && result == true) {
|
|
editStore.pushFeatureLayerJSON(options, function (success, err) {
|
|
if (success) {
|
|
callback(true, null);
|
|
}
|
|
else {
|
|
callback(false, err);
|
|
}
|
|
})
|
|
}
|
|
else if(result == false){
|
|
callback(false, error);
|
|
}
|
|
else if(result == true){
|
|
callback(true, null);
|
|
}
|
|
});
|
|
},
|
|
|
|
/**
|
|
* internal method that checks if this browser supports everything that is needed to handle offline attachments
|
|
* it also extends XMLHttpRequest with sendAsBinary() method, needed in Chrome
|
|
*/
|
|
_checkFileAPIs: function () {
|
|
if (window.File && window.FileReader && window.FileList && window.Blob) {
|
|
console.log("All APIs supported!");
|
|
|
|
if (!XMLHttpRequest.prototype.sendAsBinary) {
|
|
// https://code.google.com/p/chromium/issues/detail?id=35705#c40
|
|
XMLHttpRequest.prototype.sendAsBinary = function (datastr) {
|
|
function byteValue(x) {
|
|
return x.charCodeAt(0) & 0xff;
|
|
}
|
|
|
|
var ords = Array.prototype.map.call(datastr, byteValue);
|
|
var ui8a = new Uint8Array(ords);
|
|
this.send(ui8a.buffer);
|
|
};
|
|
console.log("extending XMLHttpRequest");
|
|
}
|
|
return true;
|
|
}
|
|
console.log("The File APIs are not fully supported in this browser.");
|
|
return false;
|
|
},
|
|
|
|
/**
|
|
* internal method that extends an object with sendAsBinary() method
|
|
* sometimes extending XMLHttpRequest.prototype is not enough, as ArcGIS JS lib seems to mess with this object too
|
|
* @param oAjaxReq object to extend
|
|
*/
|
|
_extendAjaxReq: function (oAjaxReq) {
|
|
oAjaxReq.sendAsBinary = XMLHttpRequest.prototype.sendAsBinary;
|
|
console.log("extending XMLHttpRequest");
|
|
},
|
|
|
|
//
|
|
// phantom symbols
|
|
//
|
|
|
|
_phantomSymbols: [],
|
|
|
|
_getPhantomSymbol: function (geometry, operation) {
|
|
if (this._phantomSymbols.length === 0) {
|
|
var color = [0, 255, 0, 255];
|
|
var width = 1.5;
|
|
|
|
this._phantomSymbols['point'] = [];
|
|
this._phantomSymbols['point'][this._editStore.ADD] = new SimpleMarkerSymbol({
|
|
"type": "esriSMS", "style": "esriSMSCross",
|
|
"xoffset": 10, "yoffset": 10,
|
|
"color": [255, 255, 255, 0], "size": 15,
|
|
"outline": {"color": color, "width": width, "type": "esriSLS", "style": "esriSLSSolid"}
|
|
});
|
|
this._phantomSymbols['point'][this._editStore.UPDATE] = new SimpleMarkerSymbol({
|
|
"type": "esriSMS", "style": "esriSMSCircle",
|
|
"xoffset": 0, "yoffset": 0,
|
|
"color": [255, 255, 255, 0], "size": 15,
|
|
"outline": {"color": color, "width": width, "type": "esriSLS", "style": "esriSLSSolid"}
|
|
});
|
|
this._phantomSymbols['point'][this._editStore.DELETE] = new SimpleMarkerSymbol({
|
|
"type": "esriSMS", "style": "esriSMSX",
|
|
"xoffset": 0, "yoffset": 0,
|
|
"color": [255, 255, 255, 0], "size": 15,
|
|
"outline": {"color": color, "width": width, "type": "esriSLS", "style": "esriSLSSolid"}
|
|
});
|
|
this._phantomSymbols['multipoint'] = null;
|
|
|
|
this._phantomSymbols['polyline'] = [];
|
|
this._phantomSymbols['polyline'][this._editStore.ADD] = new SimpleLineSymbol({
|
|
"type": "esriSLS", "style": "esriSLSSolid",
|
|
"color": color, "width": width
|
|
});
|
|
this._phantomSymbols['polyline'][this._editStore.UPDATE] = new SimpleLineSymbol({
|
|
"type": "esriSLS", "style": "esriSLSSolid",
|
|
"color": color, "width": width
|
|
});
|
|
this._phantomSymbols['polyline'][this._editStore.DELETE] = new SimpleLineSymbol({
|
|
"type": "esriSLS", "style": "esriSLSSolid",
|
|
"color": color, "width": width
|
|
});
|
|
|
|
this._phantomSymbols['polygon'] = [];
|
|
this._phantomSymbols['polygon'][this._editStore.ADD] = new SimpleFillSymbol({
|
|
"type": "esriSFS",
|
|
"style": "esriSFSSolid",
|
|
"color": [255, 255, 255, 0],
|
|
"outline": {"type": "esriSLS", "style": "esriSLSSolid", "color": color, "width": width}
|
|
});
|
|
this._phantomSymbols['polygon'][this._editStore.UPDATE] = new SimpleFillSymbol({
|
|
"type": "esriSFS",
|
|
"style": "esriSFSSolid",
|
|
"color": [255, 255, 255, 0],
|
|
"outline": {"type": "esriSLS", "style": "esriSLSDash", "color": color, "width": width}
|
|
});
|
|
this._phantomSymbols['polygon'][this._editStore.DELETE] = new SimpleFillSymbol({
|
|
"type": "esriSFS",
|
|
"style": "esriSFSSolid",
|
|
"color": [255, 255, 255, 0],
|
|
"outline": {"type": "esriSLS", "style": "esriSLSDot", "color": color, "width": width}
|
|
});
|
|
}
|
|
|
|
return this._phantomSymbols[geometry.type][operation];
|
|
},
|
|
|
|
//
|
|
// methods to handle attachment uploads
|
|
//
|
|
|
|
_fieldSegment: function (name, value) {
|
|
return "Content-Disposition: form-data; name=\"" + name + "\"\r\n\r\n" + value + "\r\n";
|
|
},
|
|
|
|
_fileSegment: function (fieldName, fileName, fileType, fileContent) {
|
|
return "Content-Disposition: form-data; name=\"" + fieldName +
|
|
"\"; filename=\"" + fileName +
|
|
"\"\r\nContent-Type: " + fileType + "\r\n\r\n" +
|
|
fileContent + "\r\n";
|
|
},
|
|
|
|
_uploadAttachment: function (attachment) {
|
|
var dfd = new Deferred();
|
|
|
|
var segments = [];
|
|
segments.push(this._fieldSegment("f", "json"));
|
|
segments.push(this._fileSegment("attachment", attachment.name, attachment.contentType, attachment.content));
|
|
|
|
var oAjaxReq = new XMLHttpRequest();
|
|
|
|
// surprisingly, sometimes the oAjaxReq object doesn't have the sendAsBinary() method, even if we added it to the XMLHttpRequest.prototype
|
|
if (!oAjaxReq.sendAsBinary) {
|
|
this._extendAjaxReq(oAjaxReq);
|
|
}
|
|
|
|
oAjaxReq.onload = function (result) {
|
|
dfd.resolve(JSON.parse(result.target.response));
|
|
};
|
|
oAjaxReq.onerror = function (err) {
|
|
dfd.reject(err);
|
|
};
|
|
|
|
// IMPORTANT!
|
|
// Proxy path can be set to null if feature service is CORS enabled
|
|
// Refer to "Using the Proxy Page" for more information: https://developers.arcgis.com/en/javascript/jshelp/ags_proxy.html
|
|
var proxy = this.proxyPath || esriConfig.defaults.io.proxyUrl || "";
|
|
if (proxy !== "") {
|
|
proxy += "?";
|
|
}
|
|
console.log("proxy:", proxy);
|
|
oAjaxReq.open("post", proxy + attachment.featureId + "/addAttachment", true);
|
|
var sBoundary = "---------------------------" + Date.now().toString(16);
|
|
oAjaxReq.setRequestHeader("Content-Type", "multipart\/form-data; boundary=" + sBoundary);
|
|
oAjaxReq.sendAsBinary("--" + sBoundary + "\r\n" + segments.join("--" + sBoundary + "\r\n") + "--" + sBoundary + "--\r\n");
|
|
|
|
return dfd;
|
|
},
|
|
|
|
_deleteAttachment: function (attachmentId, uploadResult) {
|
|
var dfd = new Deferred();
|
|
|
|
console.log("upload complete", uploadResult, attachmentId);
|
|
this.attachmentsStore.delete(attachmentId, function (success) {
|
|
console.assert(success === true, "can't delete attachment already uploaded");
|
|
console.log("delete complete", success);
|
|
dfd.resolve(uploadResult);
|
|
});
|
|
|
|
return dfd;
|
|
},
|
|
|
|
_sendStoredAttachments: function (callback) {
|
|
this.attachmentsStore.getAllAttachments(function (attachments) {
|
|
console.log("we have", attachments.length, "attachments to upload");
|
|
|
|
var promises = [];
|
|
attachments.forEach(function (attachment) {
|
|
console.log("sending attachment", attachment.id, "to feature", attachment.featureId);
|
|
var deleteCompleted =
|
|
this._uploadAttachment(attachment)
|
|
.then(function (uploadResult) {
|
|
if (uploadResult.addAttachmentResult && uploadResult.addAttachmentResult.success === true) {
|
|
console.log("upload success", uploadResult.addAttachmentResult.success);
|
|
return this._deleteAttachment(attachment.id, uploadResult);
|
|
}
|
|
else {
|
|
console.log("upload failed", uploadResult);
|
|
return null;
|
|
}
|
|
}.bind(this),
|
|
function (err) {
|
|
console.log("failed uploading attachment", attachment);
|
|
}
|
|
);
|
|
promises.push(deleteCompleted);
|
|
}, this);
|
|
console.log("promises", promises.length);
|
|
var allPromises = all(promises);
|
|
allPromises.then(function (results) {
|
|
console.log(results);
|
|
callback && callback(true, results);
|
|
},
|
|
function (err) {
|
|
console.log("error!", err);
|
|
callback && callback(false, err);
|
|
});
|
|
}.bind(this));
|
|
},
|
|
|
|
//
|
|
// methods to send features back to the server
|
|
//
|
|
|
|
/**
|
|
* Attempts to send any edits in the database. Monitor events for success or failure.
|
|
* @param callback
|
|
* @throws EDITS_SENT when some edits have been successfully sent
|
|
* @throws ALL_EDITS_SENT when all edits have been successfully sent
|
|
* @throws EDITS_SENT_ERROR some edits were not sent successfully
|
|
* @private
|
|
*/
|
|
_replayStoredEdits: function (callback) {
|
|
var promises = {};
|
|
var that = this;
|
|
|
|
//
|
|
// send edits for each of the layers
|
|
//
|
|
var layer;
|
|
var adds = [], updates = [], deletes = [];
|
|
var tempObjectIds = [];
|
|
var tempArray = [];
|
|
var featureLayers = this._featureLayers;
|
|
var attachmentsStore = this.attachmentsStore;
|
|
var editStore = this._editStore;
|
|
|
|
this._editStore.getAllEditsArray(function (result, err) {
|
|
if (result.length > 0) {
|
|
tempArray = result;
|
|
|
|
var length = tempArray.length;
|
|
|
|
for (var n = 0; n < length; n++) {
|
|
layer = featureLayers[tempArray[n].layer];
|
|
|
|
// If the layer has attachments then check to see if the attachmentsStore has been initialized
|
|
if (attachmentsStore == null && layer.hasAttachments) {
|
|
console.log("ERROR: you need to run OfflineFeaturesManager.initAttachments(). Check the Attachments doc for more info.");
|
|
throw new Error("OfflineFeaturesManager: Attachments aren't initialized.");
|
|
}
|
|
|
|
// Assign the attachmentsStore to the layer as a private var so we can access it from
|
|
// the promises applyEdits() method.
|
|
layer._attachmentsStore = attachmentsStore;
|
|
|
|
layer.__onEditsComplete = layer.onEditsComplete;
|
|
layer.onEditsComplete = function () {
|
|
console.log("intercepting events onEditsComplete");
|
|
};
|
|
layer.__onBeforeApplyEdits = layer.onBeforeApplyEdits;
|
|
layer.onBeforeApplyEdits = function () {
|
|
console.log("intercepting events onBeforeApplyEdits");
|
|
};
|
|
|
|
// Let's zero everything out
|
|
adds = [], updates = [], deletes = [], tempObjectIds = [];
|
|
|
|
// IMPORTANT: reconstitute the graphic JSON into an actual esri.Graphic object
|
|
// NOTE: we are only sending one Graphic per loop!
|
|
var graphic = new Graphic(tempArray[n].graphic);
|
|
|
|
switch (tempArray[n].operation) {
|
|
case editStore.ADD:
|
|
for (var i = 0; i < layer.graphics.length; i++) {
|
|
var g = layer.graphics[i];
|
|
if (g.attributes[layer.objectIdField] === graphic.attributes[layer.objectIdField]) {
|
|
layer.remove(g);
|
|
break;
|
|
}
|
|
}
|
|
tempObjectIds.push(graphic.attributes[layer.objectIdField]);
|
|
delete graphic.attributes[layer.objectIdField];
|
|
adds.push(graphic);
|
|
break;
|
|
case editStore.UPDATE:
|
|
updates.push(graphic);
|
|
break;
|
|
case editStore.DELETE:
|
|
deletes.push(graphic);
|
|
break;
|
|
}
|
|
|
|
promises[n] = that._internalApplyEdits(layer, tempArray[n].id, tempObjectIds, adds, updates, deletes);
|
|
}
|
|
|
|
}
|
|
|
|
// wait for all requests to finish
|
|
//
|
|
var allPromises = all(promises);
|
|
allPromises.then(
|
|
function (responses) {
|
|
console.log("OfflineFeaturesManager - all responses are back");
|
|
this._cleanSuccessfulEditsDatabaseRecords(responses, function (success, error) {
|
|
console.log("CLEANED EDITS DATABASE");
|
|
if (success) {
|
|
|
|
this._editStore.resetLimitedPhantomGraphicsQueue(responses, function (success) {
|
|
console.log("CLEAR PHANTOM GRAPHICS " + JSON.stringify(responses))
|
|
});
|
|
|
|
this._editStore.resetPhantomGraphicsQueue(function (success) {
|
|
|
|
this.emit(this.events.EDITS_SENT);
|
|
|
|
if (success == false) {
|
|
console.log("There was a problem deleting phantom graphics in the database.");
|
|
this.emit(this.events.EDITS_SENT_ERROR, {msg: "Problem deleting phantom graphic(s)"});
|
|
}
|
|
else {
|
|
this.emit(this.events.ALL_EDITS_SENT);
|
|
}
|
|
callback && callback(true, responses);
|
|
}.bind(this))
|
|
}
|
|
else {
|
|
this.emit(this.events.EDITS_SENT_ERROR, {msg: error}); // There was a problem, some edits were not successfully sent!
|
|
callback && callback(false, responses);
|
|
}
|
|
}.bind(that));
|
|
}.bind(that),
|
|
function (errors) {
|
|
console.log("OfflineFeaturesManager - ERROR!!");
|
|
console.log(errors);
|
|
callback && callback(false, errors);
|
|
}.bind(that)
|
|
);
|
|
});
|
|
},
|
|
|
|
/**
|
|
* Only delete items from database that were verified as successfully updated on the server.
|
|
* @param responses Object
|
|
* @param callback callback(true, responses) or callback(false, responses)
|
|
* @private
|
|
*/
|
|
_cleanSuccessfulEditsDatabaseRecords: function (responses, callback) {
|
|
if (Object.keys(responses).length !== 0) {
|
|
|
|
var editsArray = [];
|
|
var editsFailedArray = [];
|
|
|
|
for (var key in responses) {
|
|
if (responses.hasOwnProperty(key)) {
|
|
|
|
var edit = responses[key];
|
|
var tempResult = {};
|
|
|
|
if (edit.updateResults.length > 0) {
|
|
if (edit.updateResults[0].success) {
|
|
tempResult.layer = edit.layer;
|
|
tempResult.id = edit.updateResults[0].objectId;
|
|
editsArray.push(tempResult);
|
|
}
|
|
else {
|
|
editsFailedArray.push(edit);
|
|
}
|
|
}
|
|
if (edit.deleteResults.length > 0) {
|
|
if (edit.deleteResults[0].success) {
|
|
tempResult.layer = edit.layer;
|
|
tempResult.id = edit.deleteResults[0].objectId;
|
|
editsArray.push(tempResult);
|
|
}
|
|
else {
|
|
editsFailedArray.push(edit);
|
|
}
|
|
}
|
|
if (edit.addResults.length > 0) {
|
|
if (edit.addResults[0].success) {
|
|
tempResult.layer = edit.layer;
|
|
tempResult.id = edit.tempId;
|
|
editsArray.push(tempResult);
|
|
}
|
|
else {
|
|
editsFailedArray.push(edit);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
var promises = {};
|
|
var length = editsArray.length;
|
|
for (var i = 0; i < length; i++) {
|
|
promises[i] = this._updateDatabase(editsArray[i]);
|
|
}
|
|
//console.log("EDIT LIST " + JSON.stringify(editsArray));
|
|
|
|
// wait for all requests to finish
|
|
//
|
|
var allPromises = all(promises);
|
|
allPromises.then(
|
|
function (responses) {
|
|
editsFailedArray.length > 0 ? callback(false, responses) : callback(true, responses);
|
|
},
|
|
function (errors) {
|
|
callback(false, errors);
|
|
}
|
|
);
|
|
}
|
|
else {
|
|
callback(true, {});
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Deletes items from database
|
|
* @param edit
|
|
* @returns {l.Deferred.promise|*|c.promise|q.promise|promise}
|
|
* @private
|
|
*/
|
|
_updateDatabase: function (edit) {
|
|
var dfd = new Deferred();
|
|
var fakeGraphic = {};
|
|
fakeGraphic.attributes = {};
|
|
fakeGraphic.attributes.objectid = edit.id;
|
|
|
|
this._editStore.delete(edit.layer, fakeGraphic, function (success, error) {
|
|
if (success) {
|
|
|
|
var id = this._editStore.PHANTOM_GRAPHIC_PREFIX + this._editStore._PHANTOM_PREFIX_TOKEN + edit.id;
|
|
console.log("PHANTOM DELETE ID " + id);
|
|
//this.deletePhantomGraphic()
|
|
|
|
dfd.resolve({success: true, error: null});
|
|
}
|
|
else {
|
|
dfd.reject({success: false, error: error});
|
|
}
|
|
}.bind(this));
|
|
|
|
return dfd.promise;
|
|
|
|
},
|
|
|
|
/**
|
|
* Retrieves f=json from the feature layer
|
|
* @param url FeatureLayer's URL
|
|
* @param callback
|
|
* @private
|
|
*/
|
|
getFeatureLayerJSON: function (url, callback) {
|
|
require(["esri/request"], function (esriRequest) {
|
|
var request = esriRequest({
|
|
url: url,
|
|
content: {f: "json"},
|
|
handleAs: "json",
|
|
callbackParamName: "callback"
|
|
});
|
|
|
|
request.then(function (response) {
|
|
console.log("Success: ", response);
|
|
callback(true, response);
|
|
}, function (error) {
|
|
console.log("Error: ", error.message);
|
|
callback(false, error.message);
|
|
});
|
|
})
|
|
},
|
|
|
|
/**
|
|
* Executes the _applyEdits() method
|
|
* @param layer
|
|
* @param id the unique id that identifies the Graphic in the database
|
|
* @param tempObjectIds
|
|
* @param adds
|
|
* @param updates
|
|
* @param deletes
|
|
* @returns {l.Deferred.promise} contains {id,layer,tempId,addResults,updateResults,deleteResults}
|
|
* @private
|
|
*/
|
|
_internalApplyEdits: function (layer, id, tempObjectIds, adds, updates, deletes) {
|
|
var dfd = new Deferred();
|
|
|
|
layer._applyEdits(adds, updates, deletes,
|
|
function (addResults, updateResults, deleteResults) {
|
|
layer._phantomLayer.clear();
|
|
|
|
layer.onBeforeApplyEdits = layer.__onBeforeApplyEdits;
|
|
delete layer.__onBeforeApplyEdits;
|
|
var newObjectIds = addResults.map(function (r) {
|
|
return r.objectId;
|
|
});
|
|
|
|
// We use a different pattern if the attachmentsStore is valid and the layer has attachments
|
|
if (layer._attachmentsStore != null && layer.hasAttachments && tempObjectIds.length > 0) {
|
|
layer._replaceFeatureIds(tempObjectIds, newObjectIds, function (success) {
|
|
dfd.resolve({
|
|
id: id,
|
|
layer: layer.url,
|
|
tempId: tempObjectIds, // let's us internally match an ADD to it's new ObjectId
|
|
addResults: addResults,
|
|
updateResults: updateResults,
|
|
deleteResults: deleteResults
|
|
}); // wrap three arguments in a single object
|
|
});
|
|
}
|
|
else {
|
|
dfd.resolve({
|
|
id: id,
|
|
layer: layer.url,
|
|
tempId: tempObjectIds, // let's us internally match an ADD to it's new ObjectId
|
|
addResults: addResults,
|
|
updateResults: updateResults,
|
|
deleteResults: deleteResults
|
|
}); // wrap three arguments in a single object
|
|
}
|
|
},
|
|
function (error) {
|
|
layer.onEditsComplete = layer.__onEditsComplete;
|
|
delete layer.__onEditsComplete;
|
|
layer.onBeforeApplyEdits = layer.__onBeforeApplyEdits;
|
|
delete layer.__onBeforeApplyEdits;
|
|
dfd.reject(error);
|
|
}
|
|
);
|
|
return dfd.promise;
|
|
},
|
|
|
|
/**
|
|
* DEPRECATED @ v2.5
|
|
* @returns {{}}
|
|
* @private
|
|
*/
|
|
_optimizeEditsQueue: function () {
|
|
var optimizedEdits = {},
|
|
editCount = this._editStore.pendingEditsCount(),
|
|
optimizedCount = 0;
|
|
|
|
var edit, layer;
|
|
var layerEdits, objectId;
|
|
|
|
while (this._editStore.hasPendingEdits()) {
|
|
edit = this._editStore.popFirstEdit();
|
|
layer = this._featureLayers[edit.layer];
|
|
|
|
if (!(edit.layer in optimizedEdits)) {
|
|
optimizedEdits[edit.layer] = {};
|
|
}
|
|
|
|
layerEdits = optimizedEdits[edit.layer];
|
|
objectId = edit.graphic.attributes[layer.objectIdField];
|
|
|
|
if (!( objectId in layerEdits)) {
|
|
// first edit we see of this feature, no optimization to apply
|
|
layerEdits[objectId] = edit;
|
|
optimizedCount += 1;
|
|
}
|
|
else {
|
|
// we already have seen one edit for this same feature... we can merge the two edits in a single operation
|
|
switch (edit.operation) {
|
|
case this._editStore.ADD:
|
|
/* impossible!! */
|
|
throw("can't add the same feature twice!");
|
|
case this._editStore.UPDATE:
|
|
layerEdits[objectId].graphic = edit.graphic;
|
|
break;
|
|
case this._editStore.DELETE:
|
|
if (objectId < 0) {
|
|
delete layerEdits[objectId];
|
|
optimizedCount -= 1;
|
|
}
|
|
else {
|
|
layerEdits[objectId].operation = this._editStore.DELETE;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (Object.keys(layerEdits).length === 0) {
|
|
delete optimizedEdits[edit.layer];
|
|
}
|
|
}
|
|
|
|
console.log("optimized", editCount, "edits into", optimizedCount, "edits of", Object.keys(optimizedEdits).length, "layers");
|
|
return optimizedEdits;
|
|
},
|
|
|
|
/**
|
|
* DEPRECATED @ v2.5
|
|
* A string value representing human readable information on pending edits
|
|
* @param edit
|
|
* @returns {string}
|
|
*/
|
|
getReadableEdit: function (edit) {
|
|
var layer = this._featureLayers[edit.layer];
|
|
var graphic = this._editStore._deserialize(edit.graphic);
|
|
var readableGraphic = graphic.geometry.type;
|
|
var layerId = edit.layer.substring(edit.layer.lastIndexOf("/") + 1);
|
|
if (layer) {
|
|
readableGraphic += " [id=" + graphic.attributes[layer.objectIdField] + "]";
|
|
}
|
|
return "o:" + edit.operation + ", l:" + layerId + ", g:" + readableGraphic;
|
|
}
|
|
|
|
}); // declare
|
|
}); // define
|