Feature permalink

fix #497
fix #294

umap/static/umap/js/umap.controls.js

@@ -1049,7 +1049,8 @@ L.U.IframeExporter = L.Evented.extend({
     options: {
         includeFullScreenLink: true,
         currentView: false,
-        keepCurrentDatalayers: false
+        keepCurrentDatalayers: false,
+        viewCurrentFeature: false
     },
 
     queryString: {
@@ -1074,7 +1075,7 @@ L.U.IframeExporter = L.Evented.extend({
 
     initialize: function (map) {
         this.map = map;
-        this.baseUrl = '//' + window.location.host + window.location.pathname;
+        this.baseUrl = L.Util.getBaseUrl();
         // Use map default, not generic default
         this.queryString.onLoadPanel = this.map.options.onLoadPanel;
     },
@@ -1085,6 +1086,9 @@ L.U.IframeExporter = L.Evented.extend({
 
     build: function () {
         var datalayers = [];
+        if (this.options.viewCurrentFeature && this.map.currentFeature) {
+            this.queryString.feature = this.map.currentFeature.getSlug();
+        }
         if (this.options.keepCurrentDatalayers) {
             this.map.eachDataLayer(function (datalayer) {
                 if (datalayer.isVisible() && datalayer.umap_id) {
@@ -1096,7 +1100,7 @@ L.U.IframeExporter = L.Evented.extend({
             delete this.queryString.datalayers;
         }
         var currentView = this.options.currentView ? window.location.hash : '',
-            iframeUrl = this.baseUrl + '?' + this.map.xhr.buildQueryString(this.queryString) + currentView,
+            iframeUrl = this.baseUrl + '?' + L.Util.buildQueryString(this.queryString) + currentView,
             code = '<iframe width="' + this.dimensions.width + '" height="' + this.dimensions.height + '" frameborder="0" allowfullscreen src="' + iframeUrl + '"></iframe>';
         if (this.options.includeFullScreenLink) {
             code += '<p><a href="' + this.baseUrl + '">' + L._('See full screen') + '</a></p>';

umap/static/umap/js/umap.core.js

@@ -175,6 +175,19 @@ L.Util.flattenCoordinates = function (coords) {
     return coords;
 };
 
+
+L.Util.buildQueryString = function (params) {
+    var query_string = [];
+    for (var key in params) {
+        query_string.push(encodeURIComponent(key) + '=' + encodeURIComponent(params[key]));
+    }
+    return query_string.join('&');
+};
+
+L.Util.getBaseUrl = function () {
+    return '//' + window.location.host + window.location.pathname;
+};
+
 L.DomUtil.add = function (tagName, className, container, content) {
     var el = L.DomUtil.create(tagName, className, container);
     if (content) {
@@ -428,6 +441,7 @@ L.U.Help = L.Class.extend({
     shortCredit: L._('Will be displayed in the bottom right corner of the map'),
     longCredit: L._('Will be visible in the caption of the map'),
     sortKey: L._('Property to use for sorting features'),
+    slugKey: L._('The name of the property to use as feature unique identifier.'),
     filterKey: L._('Comma separated list of properties to use when filtering features'),
     interactive: L._('If false, the polygon will act as a part of the underlying map.'),
     outlink: L._('Define link to open in a new window on polygon click.'),

umap/static/umap/js/umap.features.js

@@ -45,6 +45,15 @@ L.U.FeatureMixin = {
         return this.datalayer && this.datalayer.isRemoteLayer();
     },
 
+    getSlug: function () {
+        return this.properties[this.map.options.slugKey || 'name'] || '';
+    },
+
+    getPermalink: function () {
+        const slug = this.getSlug();
+        if (slug) return L.Util.getBaseUrl() + "?" + L.Util.buildQueryString({feature: slug}) + window.location.hash;
+    },
+
     view: function(e) {
         if (this.map.editEnabled) return;
         var outlink = this.properties._umap_options.outlink,
@@ -64,6 +73,7 @@ L.U.FeatureMixin = {
         }
         // TODO deal with an event instead?
         if (this.map.slideshow) this.map.slideshow.current = this;
+        this.map.currentFeature = this;
         this.attachPopup();
         this.openPopup(e && e.latlng || this.getCenter());
     },
@@ -351,7 +361,9 @@ L.U.FeatureMixin = {
     },
 
     getContextMenuItems: function (e) {
-        var items = [];
+        var permalink = this.getPermalink(),
+            items = [];
+        if (permalink) items.push({text: L._('Permalink'), callback: function() {window.open(permalink);}});
         if (this.map.editEnabled && !this.isReadOnly()) {
             items = items.concat(this.getContextMenuEditItems(e));
         }

umap/static/umap/js/umap.js

@@ -122,10 +122,11 @@ L.U.Map.include({
 
         this.initTileLayers(this.options.tilelayers);
 
-        // Global storage for retrieving datalayers
+        // Global storage for retrieving datalayers and features
         this.datalayers = {};
         this.datalayers_index = [];
         this.dirty_datalayers = [];
+        this.features_index = {};
 
         // Retrocompat
         if (this.options.slideshow && this.options.slideshow.delay && this.options.slideshow.active === undefined) this.options.slideshow.active = true;
@@ -208,6 +209,10 @@ L.U.Map.include({
             if (this.options.onLoadPanel === 'databrowser') this.openBrowser();
             else if (this.options.onLoadPanel === 'caption') this.displayCaption();
         });
+        this.onceDatalayersDataLoaded(function () {
+            const slug = L.Util.queryString('feature');
+            if (slug && this.features_index[slug]) this.features_index[slug].view();
+        });
 
 
         window.onbeforeunload = function (e) {
@@ -292,9 +297,9 @@ L.U.Map.include({
     },
 
     initDatalayers: function () {
-        var toload = this.options.datalayers.length,
+        var toload = dataToload = seen = this.options.datalayers.length,
-            datalayer, seen = this.options.datalayers.length,
+            self = this,
-            self = this;
+            datalayer;
         var loaded = function () {
             self.datalayersLoaded = true;
             self.fire('datalayersloaded');
@@ -303,12 +308,22 @@ L.U.Map.include({
             toload--;
             if (toload === 0) loaded();
         };
+        var dataLoaded = function () {
+            self.datalayersDataLoaded = true;
+            self.fire('datalayersdataloaded');
+        };
+        var decrementDataToLoad = function () {
+            dataToload--;
+            if (dataToload === 0) dataLoaded();
+        };
         for (var j = 0; j < this.options.datalayers.length; j++) {
             datalayer = this.createDataLayer(this.options.datalayers[j]);
             if (datalayer.displayedOnLoad()) datalayer.onceLoaded(decrementToLoad);
             else decrementToLoad();
+            if (datalayer.displayedOnLoad()) datalayer.onceDataLoaded(decrementDataToLoad);
+            else decrementDataToLoad();
         }
-        if (seen === 0) loaded();  // no datalayer
+        if (seen === 0) loaded() && dataLoaded();  // no datalayer
     },
 
     indexDatalayers: function () {
@@ -330,6 +345,7 @@ L.U.Map.include({
     },
 
     onceDatalayersLoaded: function (callback, context) {
+        // Once datalayers **metadata** have been loaded
         if (this.datalayersLoaded) {
             callback.call(context || this, this);
         } else {
@@ -338,6 +354,16 @@ L.U.Map.include({
         return this;
     },
 
+    onceDatalayersDataLoaded: function (callback, context) {
+        // Once datalayers **data** have been loaded
+        if (this.datalayersDataLoaded) {
+            callback.call(context || this, this);
+        } else {
+            this.once('datalayersdataloaded', callback, context);
+        }
+        return this;
+    },
+
     updateDatalayersControl: function () {
         if (this._controls.datalayers) this._controls.datalayers.update();
     },
@@ -579,6 +605,7 @@ L.U.Map.include({
             ['options.includeFullScreenLink', {handler: 'Switch', label: L._('Include full screen link?')}],
             ['options.currentView', {handler: 'Switch', label: L._('Current view instead of default map view?')}],
             ['options.keepCurrentDatalayers', {handler: 'Switch', label: L._('Keep current visible layers')}],
+            ['options.viewCurrentFeature', {handler: 'Switch', label: L._('Open current item')}],
             'queryString.moreControl',
             'queryString.scrollWheelZoom',
             'queryString.miniMap',
@@ -1016,6 +1043,7 @@ L.U.Map.include({
         'sortKey',
         'labelKey',
         'filterKey',
+        'slugKey',
         'showLabel',
         'labelDirection',
         'labelInteractive',
@@ -1209,7 +1237,8 @@ L.U.Map.include({
             ['options.easing', {handler: 'Switch', label: L._('Advanced transition')}],
             'options.labelKey',
             ['options.sortKey', {handler: 'BlurInput', helpEntries: 'sortKey', placeholder: L._('Default: name'), label: L._('Sort key'), inheritable: true}],
-            ['options.filterKey', {handler: 'Input', helpEntries: 'filterKey', placeholder: L._('Default: name'), label: L._('Filter keys'), inheritable: true}]
+            ['options.filterKey', {handler: 'Input', helpEntries: 'filterKey', placeholder: L._('Default: name'), label: L._('Filter keys'), inheritable: true}],
+            ['options.slugKey', {handler: 'BlurInput', helpEntries: 'slugKey', placeholder: L._('Default: name'), label: L._('Feature identifier key')}]
         ];
 
         builder = new L.U.FormBuilder(this, optionsFields, {

umap/static/umap/js/umap.layer.js

@@ -421,6 +421,7 @@ L.U.DataLayer = L.Evented.extend({
         this.layer.addLayer(feature);
         this.indexProperties(feature);
         if (this.hasDataLoaded()) this.fire('datachanged');
+        this.map.features_index[feature.getSlug()] = feature;
     },
 
     removeLayer: function (feature) {
@@ -429,6 +430,7 @@ L.U.DataLayer = L.Evented.extend({
         this._index.splice(this._index.indexOf(id), 1);
         delete this._layers[id];
         this.layer.removeLayer(feature);
+        delete this.map.features_index[feature.getSlug()];
         if (this.hasDataLoaded()) this.fire('datachanged');
     },
 

umap/static/umap/js/umap.slideshow.js

@@ -46,7 +46,7 @@ L.U.Slideshow = L.Class.extend({
             // Certainly IE8, which has a limited version of defineProperty
         }
         if (this.options.autoplay) {
-            this.map.onceDatalayersLoaded(function () {
+            this.map.onceDatalayersDataLoaded(function () {
                 this.play();
             }, this);
         }

umap/static/umap/js/umap.xhr.js

@@ -280,14 +280,6 @@ L.U.Xhr = L.Evented.extend({
 
     logout: function(url) {
         this.get(url);
-    },
-
-    buildQueryString: function (params) {
-        var query_string = [];
-        for (var key in params) {
-            query_string.push(encodeURIComponent(key) + '=' + encodeURIComponent(params[key]));
-        }
-        return query_string.join('&');
     }
 
 });