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+// Author: Uroš Podkrižnik (24.1.2017)
+// Tip vprasanja = 26
+
+//DRAWING POLYLINE
+
+/**
+ * Function to set parameters for drawing a shape on map
+ *
+ * @param {type} spremenljivka - id spremenljivke
+ * @param {google's shape} shape - polyline or polygon if already exists
+ * @param shape_type - string - type of shape 'polyline' or 'polygon'
+ * @returns {undefined}
+ */
+function drawShape(spremenljivka, shape, shape_type) {
+ var map = document.getElementById("map_"+spremenljivka).gMap;
+
+ var drawingMode = (shape_type === 'polyline') ?
+ google.maps.drawing.OverlayType.POLYLINE : google.maps.drawing.OverlayType.POLYGON;
+ var startDrawingMode = shape!==null ? null : drawingMode;
+ var shapeOptions = (shape_type === 'polyline') ? polylineOptions() : polygonOptions();
+
+ var drawingManager = new google.maps.drawing.DrawingManager({
+ drawingMode: startDrawingMode,
+ drawingControl: shape===null,
+ drawingControlOptions: {
+ position: google.maps.ControlPosition.TOP_RIGHT,
+ drawingModes: [shape_type]
+ },
+ polylineOptions: shapeOptions,
+ polygonOptions: shapeOptions
+ });
+
+ //settings for custom drawing controls
+ var drawingControlDiv = document.createElement('div');
+ var DrawingControl = new drawingControl(drawingControlDiv, map, spremenljivka);
+ drawingControlDiv.index = 1;
+ map.controls[google.maps.ControlPosition.TOP_RIGHT].push(drawingControlDiv);
+ //at start, there is no shape, so no need to show delete button
+ DrawingControl.style.display = (shape!==null && !viewMode) ? 'inline-block' : 'none';
+
+ if(shape!==null){
+ shape.type = shape_type;
+ createBoundsFromPath( shape.getPath() , spremenljivka );
+ map.fitBounds(bounds[spremenljivka]);
+ afterShapeCompleteSettings(drawingManager, DrawingControl, shape, spremenljivka, map);
+ }
+
+ //listener when user colpetes shape
+ google.maps.event.addListener(drawingManager, shape_type+'complete', function(shape) {
+ shape.type = shape_type;
+ afterShapeCompleteSettings(drawingManager, DrawingControl, shape, spremenljivka, map);
+ });
+
+ drawingManager.setMap(map);
+}
+
+/**
+ * Sets all kind of settings after shape is complete
+ *
+ * @param {type} drawingManager - google's drawingManager
+ * @param {type} DrawingControl - button for removing a shape
+ * @param {google's shape} shape - polyline or polygon if already exists
+ * @param {type} spremenljivka - id spremenljivke
+ * @param {type} map - google map on which we are drawing shape
+ * @returns {undefined}
+ */
+function afterShapeCompleteSettings(drawingManager, DrawingControl, shape, spremenljivka, map){
+ //hide controls
+ drawingManager.setOptions({
+ drawingControl: false
+ });
+ //stop drawing
+ drawingManager.setDrawingMode(null);
+ //show delete button
+ DrawingControl.style.display = 'inline-block';
+
+ // Setup the click event listener for delete button
+ DrawingControl.addEventListener('click', function() {
+ clearAndMakeDrawableAgain(spremenljivka, shape, DrawingControl, drawingManager);
+ });
+
+ shapeInputHandler(shape, spremenljivka);
+
+ //hide warning info for ending a shape
+ var end_info_warning = document.getElementById("end_shape_info_"+spremenljivka);
+ end_info_warning.style.display = "none";
+
+ /**
+ * Liteners when editing a shape
+ */
+ //when editing end or start point
+ google.maps.event.addListener(shape.getPath(), 'set_at', function(index, obj) {
+ shapeInputHandler(shape, spremenljivka);
+ });
+ //when inserting new point (break old one)
+ google.maps.event.addListener(shape.getPath(), 'insert_at', function(index, obj) {
+ shapeInputHandler(shape, spremenljivka);
+ });
+ //when deleting a point -> undo
+ google.maps.event.addListener(shape.getPath(), 'remove_at', function(index, obj) {
+ shapeInputHandler(shape, spremenljivka);
+ });
+
+ setDeleteMenu(shape, map, spremenljivka, DrawingControl, drawingManager)
+}
+
+/**
+ * Sets rightclick and dblclick listeners to open delete menu
+ * @param {type} shape - shape to set listeners on
+ * @param {type} map - map on which to hover menu (shape's map)
+ * @param {type} spremenljivka - id of variable
+ * @param {type} drawingManager - google's drawingManager
+ * @param {type} DrawingControl - button for removing a shape
+ * @returns {undefined}
+ */
+function setDeleteMenu(shape, map, spremenljivka, DrawingControl, drawingManager) {
+ google.maps.event.addListener(shape, 'rightclick', function (e) {
+ // Check if click was on a vertex control point
+ if (e.vertex == undefined) {
+ return;
+ }
+ //removeVertexVM(spremenljivka, shape, e.vertex);
+ deleteMenu.open(map, shape, e.vertex, spremenljivka, DrawingControl, drawingManager);
+ });
+ google.maps.event.addListener(shape, 'dblclick', function (e) {
+ // Check if click was on a vertex control point
+ if (e.vertex == undefined) {
+ return;
+ }
+ //removeVertexVM(spremenljivka, shape, e.vertex);
+ deleteMenu.open(map, shape, e.vertex, spremenljivka, DrawingControl, drawingManager);
+ });
+}
+
+/**
+ * Ce obstajajo podatki v bazi izrisi info shapes
+ * Kreirajo se markerji, shranjeni v bazi.
+ * @param spremenljivka int id spremenljivke
+ * @param map_data JSON Object
+ */
+function map_data_fill_info_shapes(spremenljivka, map_data) {
+ //because of viewing a filled survey at data section
+ var fillMode = (document.getElementById("map_"+spremenljivka) !== null);
+
+ //pridobi mapo spremenljivke
+ var map;
+ if(fillMode)
+ map = document.getElementById("map_"+spremenljivka).gMap;
+ else
+ map = document.getElementById("map_canvas_all").gMap;
+
+
+ var shapeOption = polylineOptions(map);
+
+ for (var i=0; i<map_data.length; i++)
+ {
+ var color = mapShapeColors[i % mapShapeColors.length];
+
+ //set and show the shape
+ shapeOption.path = map_data[i].path;
+ shapeOption.strokeColor = '#'+color;
+ shapeOption.strokeColorOrg = '#'+color;
+ shapeOption.editable = false;
+ var shape = new google.maps.Polyline(shapeOption);
+
+ //Create a div element for container.
+ var container = document.createElement("div");
+ //margin, da se pri italic ne odreze zadja crka
+ container.style.cssText = 'margin-right:1px';
+
+ //Create a label for title
+ var Title = document.createElement("label");
+ Title.style.cssText = "font-size:1em;";
+ Title.innerHTML = '<b>' + map_data[i].address + '</b>';
+ container.appendChild(Title);
+
+ shape.ifnowin = container;
+ shape.address = map_data[i].address;
+ var infow = new google.maps.InfoWindow();
+
+ google.maps.event.addListener(shape, 'mouseover', function(ev) {
+ this.setOptions({strokeWeight: 6, zIndex: 2});
+ //open infowindow if title exists
+ if(this.address){
+ infow.setContent(this.ifnowin);
+ infow.setPosition(ev.latLng);
+ infow.open(map);
+ }
+ });
+ google.maps.event.addListener(shape, 'mouseout', function() {
+ this.setOptions({strokeWeight: 4, zIndex: 1});
+ infow.close();
+ });
+ }
+}
+
+/**
+ * Clears the map, deletes all inputs, hides "Clear" button and sets drawing mode on
+ * @param {type} spremenljivka - id spremenljivke
+ * @param {google's shape} shape - polyline or polygon
+ * @param {type} drawingManager - google's drawingManager
+ * @param {type} DrawingControl - button for removing a shape
+ * @returns {undefined}
+ */
+function clearAndMakeDrawableAgain(spremenljivka, shape, DrawingControl, drawingManager){
+ //remove shape
+ shape.setMap(null);
+ //remove all hidden inputs of a shape
+ deleteAllShapeInputs(spremenljivka);
+ //hide delete button
+ DrawingControl.style.display = 'none';
+ //show drawing controls
+ drawingManager.setOptions({
+ drawingControl: true
+ });
+
+ //start drawing
+ drawingManager.setDrawingMode(shape.type);
+
+ //show warning info for ending a shape
+ var end_info_warning = document.getElementById("end_shape_info_"+spremenljivka);
+ end_info_warning.style.display = "inline-block";
+}
+
+/**
+ * Removes a vertex/point of shape and if it after last it clears the map
+ * and sets drawing mode on again
+ * @param {type} spremenljivka - id spremenljivke
+ * @param {google's shape} shape - polyline or polygon if already exists
+ * @param {type} vertex - vertex or point which was selected
+ * @param {type} drawingManager - google's drawingManager
+ * @param {type} DrawingControl - button for removing a shape
+ * @returns {undefined}
+ */
+/*function removeVertex(spremenljivka, shape, vertex, DrawingControl, drawingManager) {
+ if (!shape || vertex == undefined)
+ return;
+
+ shape.getPath().removeAt(vertex);
+
+ if(shape.getPath().length < 2){
+ clearAndMakeDrawableAgain(spremenljivka, shape, DrawingControl, drawingManager);
+ }
+}*/
+
+/**
+ * Handle hidden input - remove old, create new
+ * @param {google's shape} shape - polyline or polygon
+ * @param {int} spremenljivka - id spremenljivke
+ * @returns {undefined}
+ */
+function shapeInputHandler(shape, spremenljivka){
+ deleteAllShapeInputs(spremenljivka);
+ createAllShapeInputs( shape.getPath(), spremenljivka );
+}
+
+/**
+ * create hidden inputs of all points of shape
+ * @param {type} path shape.getPath()
+ * @param {int} spremenljivka - id spremenljivke
+ */
+function createAllShapeInputs( path , spremenljivka ) {
+ var pathArray = path.getArray();
+ for( var i = 0, n = pathArray.length; i < n; i++ ) {
+ var latLng = pathArray[i];
+ createShapeInput(spremenljivka, { lat: latLng.lat(), lng: latLng.lng() }, i+1);
+ }
+}
+
+/**
+ * create hidden input of shape data
+ * @param {type} spremenljivka - int - id spremenljivke
+ * @param {type} vertices - array of lat and lng
+ * @param {type} index - order of point
+ * @returns {undefined}
+ */
+function createShapeInput(spremenljivka, vertices, index) {
+ //najdi element za drzanje variabel
+ var $variable_holder = $("#spremenljivka_" + spremenljivka + "_variabla");
+
+ //kreiraj input s statičnimi podatki markerja
+ var $shapeInput = $("<input>", {name: "vrednost_" + spremenljivka + "[]",
+ type: "hidden", class: "shape_input",
+ value: index + "|" + vertices.lat + "|" + vertices.lng});
+ $variable_holder.append($shapeInput);
+}
+
+/**
+ * delete all hidden inputs of shape
+ * @param {type} spremenljivka - id spremenljivke
+ */
+function deleteAllShapeInputs(spremenljivka) {
+ //brisi vse inpute s staticnimi podatki shape
+ $('#spremenljivka_' + spremenljivka + '_variabla').find('input.shape_input').remove();
+}
+
+/**
+ * Ce obstajajo podatki v bazi (rec. uporabnik klikne 'Prejsnja stran').
+ * Kreira se shape, shranjena v bazi.
+ * @param spremenljivka int id spremenljivke
+ * @param map_data JSON Object
+ * @param shape_type - string - type of shape 'polyline' or 'polygon'
+ */
+function map_data_fill_shape(spremenljivka, map_data, shape_type){
+ //because of viewing a filled survey at data section
+ var fillMode = (document.getElementById("map_"+spremenljivka) !== null);
+
+ //pridobi mapo spremenljivke
+ var map;
+ if(fillMode)
+ map = document.getElementById("map_"+spremenljivka).gMap;
+ else
+ map = document.getElementById("map_canvas_all").gMap;
+
+ var shapeOption = shape_type === 'polyline' ? polylineOptions(map) : polygonOptions(map);
+
+ //for respondents, fill a map
+ if(fillMode){
+ //set and show the shape
+ shapeOption.path = map_data;
+ var shape = shape_type === 'polyline' ?
+ new google.maps.Polyline(shapeOption) : new google.maps.Polygon(shapeOption);
+
+ //alsways viewMode = false, except at insight into survey at data
+ //if not viewMode, create shape inputs and start drawing
+ if(!viewMode){
+ //create hidden inputs of shape
+ createAllShapeInputs( shape.getPath() , spremenljivka );
+
+ //set all data for shape drawing
+ drawShape(spremenljivka, shape, shape_type);
+ }
+ //if viewMode, just create and fit bounds
+ else{
+ //set bounds
+ createBoundsFromPath( shape.getPath() , spremenljivka );
+ map.fitBounds(bounds[spremenljivka]);
+ }
+ }
+ //for admins, show shapes
+ else{
+ var keys = Object.keys(map_data);
+
+ for (var i=0; i<keys.length; i++)
+ {
+ var color = mapShapeColors[i % mapShapeColors.length];
+
+ //set and show the shape
+ shapeOption.path = map_data[keys[i]];
+ shapeOption.strokeColor = '#'+color;
+ shapeOption.strokeColorOrg = '#'+color;
+ var shape = shape_type === 'polyline' ?
+ new google.maps.Polyline(shapeOption) : new google.maps.Polygon(shapeOption);
+
+ google.maps.event.addListener(shape, 'mouseover', function() { this.setOptions({strokeWeight: 6, strokeColor: 'black', zIndex: 2}); });
+ google.maps.event.addListener(shape, 'mouseout', function() { this.setOptions({strokeWeight: 4, strokeColor: this.strokeColorOrg , zIndex: 1}); });
+
+ //set bounds
+ createBoundsFromPath( shape.getPath() , 'all' );
+ map.fitBounds(bounds['all']);
+ }
+ }
+}
+
+/**
+ * Polyline options holder
+ * @param map google map, to put polyline in it
+ * @returns {polylineOptions.PolylineAnonym$6}
+ */
+function polylineOptions(map){
+ return {
+ strokeColor: 'black',
+ strokeColorOrg: 'black',
+ strokeWeight: 4,
+ clickable: true,
+ editable: !viewMode,
+ zIndex: 1,
+ map: map
+ };
+}
+
+/**
+ * Polygon options holder
+ * @param map google map, to put polygon in it
+ * @returns {polygonOptions.PolygonAnonym$6}
+ */
+function polygonOptions(map){
+ return {
+ strokeColor: 'black',
+ strokeColorOrg: 'black',
+ strokeWeight: 4,
+ clickable: true,
+ editable: !viewMode,
+ zIndex: 1,
+ map: map
+ };
+} \ No newline at end of file