add export functionality

CHANGELOG.md

@@ -1,3 +1,7 @@
+## next release
+* Enable export of geometries as geojson by using the attribute "allowGeometryExport" ([PR#137](https://github.com/mapbender/mapbender-digitizer/pull/137))
+
+
 ## 2.0.3
 * updateMultiple now returns a Promise; TableRenderer includes addOrRefreshRow for automatic feature handling post-AJAX call; unique namespace ID for unsaved features enables updates post-AJAX; oldGeometry set after successful updateMultiple call. ([PR#133](https://github.com/mapbender/mapbender-digitizer/pull/133))
 * prevent Draw Donut On Non-Digitizer Features ([PR#120](https://github.com/mapbender/mapbender-digitizer/pull/120))

src/Mapbender/DataManagerBundle/Resources/styles/dataManager.element.scss

@@ -157,7 +157,7 @@ $buttonActiveTextColor: #fff !default;
         .ui-dialog-titlebar-close {
             &:before {
                 content: "\f00d"; // =.fa-times
-                font-family: "FontAwesome", "Font Awesome 5 Free", "Font Awesome 5 Pro";
+                font-family: "FontAwesome", "Font Awesome 6 Free", "Font Awesome 6 Pro", "Font Awesome 5 Free", "Font Awesome 5 Pro";
             }
 
             .ui-button-icon {
@@ -334,3 +334,37 @@ $buttonActiveTextColor: #fff !default;
         margin-right: 0.5em;
     }
 }
+
+
+.data-manager-dialog, .mb-element-data-manager {
+    .sorting, .sorting_asc, .sorting_desc {
+        cursor: pointer;
+    }
+
+    .sorting:before, .sorting_asc:before, .sorting_desc:after {
+        display: inline-block !important;
+        min-width: 1.4em; // Prevent width change on sorting state change
+        font-family: var(--fa-style-family, "Font Awesome 6 Free");
+        font-weight: var(--fa-style, 900);
+        line-height: 1;
+        transform: translateY(1px);
+        right: 1em !important;
+    }
+
+    .sorting:before {
+        content: "\f0dc" !important; // = .fa-sort / .fa-unsorted
+        opacity: 1 !important;
+    }
+
+    .sorting_asc:before {
+        content: "\f160" !important; // = .fa-sort-amount-asc
+    }
+
+    .sorting_desc:after {
+        content: "\f161" !important; // = .fa-sort-amount-desc
+    }
+
+    .sorting:after, .sorting_asc:after, .sorting_desc:before {
+        content: "" !important;
+    }
+}

src/Mapbender/DigitizerBundle/Resources/public/TableRenderer.js

@@ -2,105 +2,139 @@
     "use strict";
 
     Mapbender.Digitizer = Mapbender.Digitizer || {};
+
     Mapbender.Digitizer.TableRenderer = function() {
+        // Call parent constructor
         Mapbender.DataManager.TableRenderer.apply(this, arguments);
+
+        // Initialize an array to store checked row IDs
+        this.selectedFeatures = [];
     };
-    Mapbender.Digitizer.TableRenderer.prototype = Object.create(Mapbender.DataManager.TableRenderer.prototype);
-    Object.assign(Mapbender.Digitizer.TableRenderer.prototype, {
-        constructor: Mapbender.Digitizer.TableRenderer
-    });
+
+    // Inherit from DataManager.TableRenderer
+    Mapbender.Digitizer.TableRenderer.prototype =
+        Object.create(Mapbender.DataManager.TableRenderer.prototype);
 
     Object.assign(Mapbender.Digitizer.TableRenderer.prototype, {
+        constructor: Mapbender.Digitizer.TableRenderer,
+
         render: function(schema) {
             var table = Mapbender.DataManager.TableRenderer.prototype.render.call(this, schema);
             this.registerEvents(schema, $(table));
             return table;
         },
+
         registerEvents: function(schema, $table) {
             var widget = this.owner;
+
+            // Hover highlight
             $table.on('mouseenter mouseleave', 'tbody > tr', function(event) {
                 var hover = event.handleObj.origType === 'mouseenter';
                 var feature = $(this).data().item;
                 if (feature) {
                     feature.set('hover', hover);
                 }
             });
+
+            // Row click => zoom to feature
             $table.on('click', 'tbody > tr', function (e) {
-                // Do nothing if click hit an interaction button; return true to allow other handlers
                 var $target = $(e.target);
-                var $parentsAndSelf = $target.parentsUntil(this).add($target);
-                if ($parentsAndSelf.filter('.button,.btn').length) {
+                if ($target.is('.row-checkbox')) {
                     return true;
                 }
                 var feature = $(this).data().item;
                 if (feature) {
                     widget.zoomToFeature(schema, feature);
                 }
             });
-            this.registerButtonEvents(schema, $table);
+
+
+            // Existing buttons
+            this.registerButtonEvents(schema, $table);    
         },
+
         registerButtonEvents: function(schema, $table) {
             var self = this;
+
+            $table.on('click', 'tbody > tr .-fn-check-for-export', function(e) {
+                e.stopPropagation();
+                var $row = $(this).closest('tr');
+                var feature = $row.data('item');
+                if (!feature) { return; }
+                // Toggle selected state, maintain selectedFeatures array
+                var idx = self.selectedFeatures.indexOf(feature);
+                var selected = (idx >= 0);
+                if (selected) {
+                    self.selectedFeatures.splice(idx, 1);
+                    $('i.fa', this).removeClass('fa-check-square-o').addClass('fa-square-o');
+                } else {
+                    self.selectedFeatures.push(feature);
+                    $('i.fa', this).removeClass('fa-square-o').addClass('fa-check-square-o');
+                }
+            });
+
+            // Save
             $table.on('click', 'tbody > tr .-fn-save', function(event) {
-                // Avoid calling row click handlers (may zoom to feature or open the edit dialog, depending on schema config)
                 event.stopPropagation();
                 var data = $(this).closest('tr').data();
                 if (data.schema && data.item) {
-                    self.owner._saveItem(data.schema, data.item).fail(function(){
-                        self.owner._afterFailedSave(data.schema,data.item);
-                    });
+                    self.owner._saveItem(data.schema, data.item)
+                        .fail(function(){
+                            self.owner._afterFailedSave(data.schema, data.item);
+                        });
                 }
             });
+
+            // Toggle visibility
             $table.on('click', 'tbody > tr .-fn-toggle-visibility', function(event) {
-                // Avoid calling row click handlers (may zoom to feature or open the edit dialog, depending on schema config)
                 event.stopPropagation();
                 var $tr = $(this).closest('tr');
                 var feature = $tr.data().item;
                 feature.set('hidden', !feature.get('hidden'));
                 self.updateButtonStates_($tr.get(0), feature);
             });
+
+            // Edit style
             $table.on('click', 'tbody > tr .-fn-edit-style', function(event) {
+                event.stopPropagation();
                 var data = $(this).closest('tr').data();
                 if (data.schema && data.item) {
                     self.owner.openStyleEditor(data.schema, data.item);
                 }
             });
+
+            // Copy
             $table.on('click', 'tbody > tr .-fn-copy', function(event) {
-                // Avoid calling row click handlers (may already try to zoom to feature, or open the edit dialog, depending on schema config)
                 event.stopPropagation();
                 var data = $(this).closest('tr').data();
                 if (data.schema && data.item) {
                     self.owner.cloneFeature(data.schema, data.item);
                 }
             });
         },
+
         onRowCreation: function(tableSchema, tr, feature) {
             Mapbender.DataManager.TableRenderer.prototype.onRowCreation.apply(this, arguments);
-            // Place table row into feature data for quick access (synchronized highlighting etc)
+            // Link table row with feature
             feature.set('table-row', tr);
             // Inline save buttons start out disabled
             $('.-fn-save', tr).prop('disabled', !feature.get('dirty'));
             this.registerFeatureEvents(feature);
         },
+
         registerFeatureEvents: function(feature) {
-            // Avoid registering same event handlers on the same feature multiple times
             if (feature.get('table-events')) {
                 return;
             }
-            // @todo: track across multiple tables
-
             var self = this;
-            // Update interaction buttons when "hidden" and "dirty" values change
             feature.on(ol.ObjectEventType.PROPERTYCHANGE, function(event) {
                 var feature = event.target;
                 var tr = feature && feature.get('table-row');
                 if (tr) {
                     switch (event.key) {
                         default:
-                            // do nothing
                             break;
                         case 'dirty':
-                            // Page to feature on initial modification
                             if (feature.get('dirty')) {
                                 self.showRow(tr);
                             }
@@ -113,7 +147,6 @@
                             break;
                     }
 
-
                     if (event.key === 'dirty' && feature.get('dirty')) {
                         self.showRow(tr);
                     }
@@ -122,34 +155,28 @@
             });
             feature.set('table-events', true);
         },
-        /**
-         * @param {Object} feature
-         * @param {Boolean} show to automatically update pagination
-         */
+
         refreshRow: function(feature, show) {
             Mapbender.DataManager.TableRenderer.prototype.refreshRow.apply(this, arguments);
-
             var tr = feature && feature.get('table-row');
             if (tr) {
                 this.updateButtonStates_(tr, feature);
             }
         },
+
         updateButtonStates_: function(tr, feature) {
             var hidden = !!feature.get('hidden');
-            var tooltip;
-            if (hidden) {
-                tooltip = Mapbender.trans('mb.digitizer.feature.visibility.toggleon')
-            } else {
-                tooltip = Mapbender.trans('mb.digitizer.feature.visibility.toggleoff')
-            }
+            var tooltip = hidden
+                ? Mapbender.trans('mb.digitizer.feature.visibility.toggleon')
+                : Mapbender.trans('mb.digitizer.feature.visibility.toggleoff');
             var $visibilityButton = $('.-fn-toggle-visibility', tr);
-            // Support both icon class ON button (legacy misuse) and icon markup INSIDE button transparently
+            // Handle icon class toggling
             var $visibilityIcon = $visibilityButton.children().add($visibilityButton).filter('.fa');
             $visibilityIcon
                 .toggleClass('fa-eye-slash', hidden)
                 .toggleClass('fa-eye', !hidden)
-                .attr('title', tooltip)
-            ;
+                .attr('title', tooltip);
+
             $('.-fn-save', tr).prop('disabled', !feature.get('dirty'));
 
             if (!!feature.get('dirty')) {

src/Mapbender/DigitizerBundle/Resources/public/mapbender.element.digitizer.js

@@ -422,7 +422,8 @@
                 schema.allowDigitize && schema.allowEdit && '-fn-save',
                 schema.copy && schema.copy.enable && '-fn-copy',
                 schema.allowCustomStyle && '-fn-edit-style',
-                schema.allowChangeVisibility && '-fn-toggle-visibility'
+                schema.allowChangeVisibility && '-fn-toggle-visibility',
+                schema.allowGeometryExport && '-fn-check-for-export'
             ]);
             return codes.filter(function(x) { return !!x; });
         },
@@ -478,6 +479,7 @@
             return this._super(schema).then(function(features) {
                 self.queuedRefresh_[schema.schemaName] = false;
                 self.renderer.replaceFeatures(schema, features);
+                self.tableRenderer.selectedFeatures = [];
                 return features;
             });
         },
@@ -796,6 +798,23 @@
         adjustStyle: function(schema, feature) {
 
         },
+        createExportData: function(geojson) {
+
+           var geojsonstring = JSON.stringify(geojson);
+           this._downloadBlob(geojsonstring, 'application/json', 'export.geojson');
+        },
+
+        _downloadBlob: function(data, mimeType, filename) {
+            let blob = (data instanceof Blob) ? data : new Blob([data], { type: mimeType });
+            let url = URL.createObjectURL(blob);
+            let tempLink = document.createElement('a');
+            tempLink.href = url;
+            tempLink.download = filename;
+            document.body.appendChild(tempLink);
+            tempLink.click();
+            document.body.removeChild(tempLink);
+        },
+
         __formatting_dummy: null
     });
 

src/Mapbender/DigitizerBundle/Resources/public/toolset.js

@@ -71,7 +71,7 @@
                     return (!seen[toolSpec.type])
                         && self.checkToolAccess_(subSchemas[s], toolSpec.type)
                         && -1 !== validNames.indexOf(toolSpec.type)
-                    ;
+                        ;
                 });
                 for (var t = 0; t < subSchemaTools.length; ++t) {
                     var toolSpec = subSchemaTools[t];
@@ -102,10 +102,22 @@
                     .append($icon)
                     .data({
                         schema: btnSchema
-                    })
-                ;
+                    });
                 buttons.push($button);
             }
+
+            if (schema.allowGeometryExport || this.owner.expandCombination(schema).some(subSchema => subSchema.allowGeometryExport)) {
+                var $exportBtnIcon = $('<span>').addClass('fa fa-download');
+                var $exportBtn = $('<button>')
+                    .attr({
+                        type: 'button',
+                        title: Mapbender.trans('mb.digitizer.toolset.exportSelected')
+                    })
+                    .addClass('btn btn-default -fn-export-selected')
+                    .append($exportBtnIcon);
+                buttons.push($exportBtn);
+            }
+
             return buttons;
         },
         checkToolAccess_: function(schema, toolName) {
@@ -126,6 +138,45 @@
                     }
                 });
             });
+
+            // Add an event listener for exporting the currently selected features
+            widget.element.on('click', '.-fn-export-selected', function() {
+                // Get the selected features
+                var exportFeatures = widget.tableRenderer.selectedFeatures || [];
+
+                // Check if there are any features to export
+                if (exportFeatures.length === 0) {
+                    $.notify(Mapbender.trans('mb.digitizer.feature.export.notFound'));
+                    return;
+                }
+
+                // Create a new array of features that include geometry and properties
+                var strippedFeatures = exportFeatures.map(function(originalFeature) {
+                    var geometryClone = originalFeature.getGeometry().clone();
+                    var properties = originalFeature.get("data");
+                    delete properties.geometry; // Remove the geometry property to avoid duplication
+                    return new ol.Feature({
+                        geometry: geometryClone,
+                        ...properties // Add the properties to the new feature
+                    });
+                });
+
+                var format = new ol.format.GeoJSON();
+                var dataProjection = 'EPSG:4326';
+
+                // Write features as GeoJSON, specifying only geometry
+                var geojson = format.writeFeaturesObject(strippedFeatures, {
+                    dataProjection: dataProjection,
+                    featureProjection: widget.mbMap.getModel().olMap.getView().getProjection()
+                });
+
+
+                widget.createExportData(geojson);
+
+
+
+            });
+
         }
     };
 })(jQuery);