add polygon support and use cancel/okCancel modals

src/10-overlay.ts

@@ -79,17 +79,28 @@ class Polygon extends OverlayBase {
   constructor(name: string, desc: string, points: Point[], options: any) {
     super(name, desc, points, options);    
     this.self = L.polygon(points, options);
+    this.self.bindPopup(`<h3>${name}</h3><p>${desc}</p>`);
   }
 }
 
-class Path extends OverlayBase {
+class Polyline extends OverlayBase {
   constructor() {
     super("", "", [ ], {});
     this.self = L.polyline([]);
   }
   
-  insertPoint(pt: Point) {
+  insertPoint(pt: Point): void {
     this.self.addLatLng(pt);
+    this.points.push(pt);
+  }
+  
+  clearPoints(): void {
+    this.points = [];
+    this.self.setLatLngs([]);
+  }
+  
+  numPoints(): number {
+    return this.self.getLatLngs().length;
   }
 }
 
@@ -97,11 +108,13 @@ class OverlayState {
   markers: Marker[];
   circles: Circle[];
   polygons: Polygon[];
+  polyline: Polyline;
   
   constructor() {
     this.markers = [];
     this.circles = [];
     this.polygons = [];
+    this.polyline = new Polyline();
   }
   
   static load(): OverlayState {
@@ -112,6 +125,7 @@ class OverlayState {
         markers: model.markers.map((m: OverlayData) => OverlayState.fromData(m)),
         circles: model.circles.map((c: OverlayData) => OverlayState.fromData(c)),
         polygons: model.polygons.map((p: OverlayData) => OverlayState.fromData(p)),
+        polyline: new Polyline(),
       } as OverlayState
     } else {
       return new OverlayState();

src/12-textUtils.ts

@@ -1,11 +1,13 @@
 class TextUtils {
   static decodeHTML(text: string): string {
+    return text;
     const textArea = document.createElement('textarea');
     textArea.innerHTML = text;
     return textArea.value;
   }
   
   static encodeHTML(text: string): string {
+    return text;
     const textArea = document.createElement('textarea');
     textArea.innerText = text;
     return textArea.innerHTML;

src/20-createOverlayModal.ts

@@ -89,6 +89,9 @@ class CreateOverlayModal {
           submitBtn.onclick = () => {
             const name = TextUtils.encodeHTML(_this.nameField());
             const desc = TextUtils.encodeHTML(_this.descField());
+            if (name.trim().length < 1 || desc.trim().length < 1) {
+              return;
+            }
             const point = new Marker(name, desc, args.latlng, {title: name, alt: name});
             point.add(args.map);
             args.overlays.markers.push(point);
@@ -105,6 +108,9 @@ class CreateOverlayModal {
             const radius = _this.radiusField();
             const name = TextUtils.encodeHTML(_this.nameField());
             const desc = TextUtils.encodeHTML(_this.descField());
+            if (name.trim().length < 1 || desc.trim().length < 1) {
+              return;
+            }
             const circle = new Circle(name, desc, args.latlng, {radius: Number(radius) || 500});
             circle.add(args.map);
             args.overlays.circles.push(circle);
@@ -113,6 +119,22 @@ class CreateOverlayModal {
         }
         break;
       case OverlayType.POLYGON:
+        if (title) {
+          title.innerHTML = "Add Polygon";
+        }
+        if (submitBtn) {
+          submitBtn.onclick = () => {
+            const name = TextUtils.encodeHTML(_this.nameField());
+            const desc = TextUtils.encodeHTML(_this.descField());
+            if (name.trim().length < 1 || desc.trim().length < 1) {
+              return;
+            }
+            const polygon = new Polygon(name, desc, args.points, {});
+            polygon.add(args.map);
+            args.overlays.polygons.push(polygon);
+            _this.setVisible(false);
+          }
+        }
         break;
     }
   }

src/21-cancelModal.ts

@@ -0,0 +1,31 @@
+class CancelModal {
+  self(): HTMLElement | null {
+    return document.getElementById("cancel-container");
+  }
+  
+  cancelMsg(): HTMLElement | null {
+    return document.getElementById("cancel-msg");
+  }
+  
+  cancelBtn(): HTMLElement | null {
+    return document.getElementById("cancel-btn");
+  }
+  
+  visible(): boolean {
+    return this.self()?.style.display != "none";
+  }
+  
+  setVisible(v: boolean): void {
+    const modal = this.self();
+    if (modal) {
+      modal.style.display = v ? "block" : "none";
+    }
+  }
+  
+  setMsg(s: string): void {
+    const msg = this.cancelMsg();
+    if (msg) {
+      msg.innerText = s;
+    }
+  }
+}

src/22-okCancelModal.ts

@@ -0,0 +1,35 @@
+class OKCancelModal {
+  self(): HTMLElement | null {
+    return document.getElementById("confirm-container");
+  }
+  
+  confirmMsg(): HTMLElement | null {
+    return document.getElementById("confirm-msg");
+  }
+  
+  okBtn(): HTMLElement | null {
+    return document.getElementById("yes-btn");
+  }
+  
+  cancelBtn(): HTMLElement | null {
+    return document.getElementById("no-btn");
+  }
+  
+  visible(): boolean {
+    return this.self()?.style.display != "none";
+  }
+  
+  setVisible(v: boolean): void {
+    const modal = this.self();
+    if (modal) {
+      modal.style.display = v ? "block" : "none";
+    }
+  }
+  
+  setMsg(s: string): void {
+    const msg = this.confirmMsg();
+    if (msg) {
+      msg.innerText = s;
+    }
+  }
+}

src/29-modalCollection.ts

@@ -1,11 +1,21 @@
 class ModalCollection {
   createOverlay: CreateOverlayModal;
+  cancel: CancelModal;
+  okCancel: OKCancelModal;
   
-  constructor(createOverlay: CreateOverlayModal) {
+  constructor(
+    createOverlay: CreateOverlayModal,
+    cancel: CancelModal,
+    okCancel: OKCancelModal
+  ) {
     this.createOverlay = createOverlay;
+    this.cancel = cancel;
+    this.okCancel = okCancel;
   }
   
   closeAll(): void {
     this.createOverlay.setVisible(false);
+    this.cancel.setVisible(false);
+    this.okCancel.setVisible(false);
   }
 }

src/40-handlers.ts

@@ -34,14 +34,21 @@ class MapHandler {
         if (addPointBtn) {
           addPointBtn.classList.remove("activeBtn");
         }
-        self.map.off("click", this.addMarker);
+        self.map.off("click", MapHandler.addMarker);
       } catch {}
       try {
         const addCircleBtn = document.getElementById("addCircle-btn");
         if (addCircleBtn) {
           addCircleBtn.classList.remove("activeBtn");
         }
-        self.map.off("click", this.addCircle);
+        self.map.off("click", MapHandler.addCircle);
+      } catch {}
+      try {
+        const addPolygonBtn = document.getElementById("addPolygon-btn");
+        if (addPolygonBtn) {
+          addPolygonBtn.classList.remove("activeBtn");
+        }
+        self.map.off("click", MapHandler.polygonAddPoint);
       } catch {}
     }
   }
@@ -49,26 +56,43 @@ class MapHandler {
   static addMarker(e: any): void {
     const self = MapHandler.instance;
     if (self) {
-      self.modals.createOverlay.setVisible(true);
+      self.modals.cancel.setVisible(false);
       self.modals.createOverlay.setState(OverlayType.POINT, {
         latlng: e.latlng,
         map: self.map,
         overlays: self.overlays,
       });    
       MapHandler.resetMapClick();
+      self.modals.createOverlay.setVisible(true);
     }
   }
   
   static addCircle(e: any): void {
     const self = MapHandler.instance;
     if (self) {
-      self.modals.createOverlay.setVisible(true);
+      self.modals.cancel.setVisible(false);
       self.modals.createOverlay.setState(OverlayType.CIRCLE, {
         latlng: e.latlng,
         map: self.map,
         overlays: self.overlays,
       });    
       MapHandler.resetMapClick();
+      self.modals.createOverlay.setVisible(true);
+    }
+  }
+  
+  static addPolygon(e: any): void {
+    const self = MapHandler.instance;
+    if (self) {
+      self.modals.okCancel.setVisible(false);
+      self.modals.createOverlay.setState(OverlayType.POLYGON, {
+        points: self.overlays.polyline.points,
+        map: self.map,
+        overlays: self.overlays,
+      });
+      MapHandler.resetMapClick();
+      self.overlays.polyline.clearPoints();
+      self.modals.createOverlay.setVisible(true);
     }
   }
   
@@ -79,6 +103,16 @@ class MapHandler {
       MapHandler.resetMapClick();
       (e.target as HTMLElement).classList.add("activeBtn");
       self.map.on("click", MapHandler.addCircle);
+      
+      const cancelBtn = self.modals.cancel.cancelBtn();
+      if (cancelBtn) {
+        cancelBtn.onclick = ()=> {
+          self.modals.closeAll();
+          MapHandler.resetMapClick();
+        };
+      }
+      self.modals.cancel.setMsg("Placing circle");
+      self.modals.cancel.setVisible(true);
     }
   }
   
@@ -89,20 +123,116 @@ class MapHandler {
       MapHandler.resetMapClick();
       (e.target as HTMLElement).classList.add("activeBtn");
       self.map.on("click", MapHandler.addMarker);
+      
+      const cancelBtn = self.modals.cancel.cancelBtn();
+      if (cancelBtn) {
+        cancelBtn.onclick = ()=> {
+          self.modals.closeAll();
+          MapHandler.resetMapClick();
+        };
+      }
+      self.modals.cancel.setMsg("Placing marker");
+      self.modals.cancel.setVisible(true);
+    }
+  }
+  
+  static polygonCollect(e: any): void {
+    const self = MapHandler.instance;
+    if (self) {
+      self.modals.closeAll();
+      MapHandler.resetMapClick();
+      (e.target as HTMLElement).classList.add("activeBtn");
+      
+      // show cancel -- on cancel, clear polyline and reset map handling
+      const cancelBtn = self.modals.cancel.cancelBtn();
+      if (cancelBtn) {
+        cancelBtn.onclick = MapHandler.polygonClearPoints;
+      }
+      self.modals.cancel.setMsg("Creating polygon");
+      self.modals.cancel.setVisible(true);
+      
+      self.map.on("click", MapHandler.polygonAddPoint);
+    }
+  }
+  
+  static polygonClearPoints(e: any): void {
+    const self = MapHandler.instance;
+    if (self) {
+      self.modals.closeAll();
+      self.overlays.polyline.clearPoints();
+      MapHandler.resetMapClick();
+    }
+  }
+  
+  static polygonAddPoint(e: any): void {
+    const self = MapHandler.instance;
+    if (self) {
+      self.overlays.polyline.insertPoint(e.latlng);
+      if (self.overlays.polyline.numPoints() >= 3) {
+        self.modals.cancel.setVisible(false);
+        
+        const okBtn = self.modals.okCancel.okBtn();
+        if (okBtn) {
+          okBtn.onclick = MapHandler.addPolygon;
+        }
+        const cancelBtn = self.modals.okCancel.cancelBtn();
+        if (cancelBtn) {
+          cancelBtn.onclick = MapHandler.polygonClearPoints;
+        }
+        self.modals.okCancel.setMsg("Creating polygon");
+        self.modals.okCancel.setVisible(true);
+      }
     }
   }
   
   static overlaySave(e: any): void {
     const self = MapHandler.instance;
     if (self) {
-      OverlayState.save(self.overlays);
+      self.modals.closeAll();
+      MapHandler.resetMapClick();
+      (e.target as HTMLElement).classList.add("activeBtn");
+      self.modals.okCancel.setMsg("Save current map overlays?");
+
+      const okBtn = self.modals.okCancel.okBtn();
+      if (okBtn) {
+        okBtn.onclick = ()=> {
+          OverlayState.save(self.overlays);
+          self.modals.okCancel.setVisible(false);
+          // show info modal "Save complete" 
+        }
+      }
+      const cancelBtn = self.modals.okCancel.cancelBtn();
+      if (cancelBtn) {
+        cancelBtn.onclick = () => {
+          self.modals.okCancel.setVisible(false);
+        }
+      }
+      self.modals.okCancel.setVisible(true);
     }
   }
   
   static overlayClear(e: any): void {
     const self = MapHandler.instance;
     if (self) {
-      self.overlays = OverlayState.clear(self.overlays, self.map);
+      self.modals.closeAll();
+      MapHandler.resetMapClick();
+      (e.target as HTMLElement).classList.add("activeBtn");
+      self.modals.okCancel.setMsg("Clear all map overlays (will not affect saved data)?");
+
+      const okBtn = self.modals.okCancel.okBtn();
+      if (okBtn) {
+        okBtn.onclick = ()=> {
+          self.overlays = OverlayState.clear(self.overlays, self.map);
+          self.modals.okCancel.setVisible(false);
+        }
+      }
+      const cancelBtn = self.modals.okCancel.cancelBtn();
+      if (cancelBtn) {
+        cancelBtn.onclick = () => {
+          self.modals.okCancel.setVisible(false);
+        }
+      }
+      self.modals.okCancel.setVisible(true);
     }
   }
   

src/99-onyx-scry.ts

@@ -26,14 +26,18 @@ function init(): void {
   overlays.markers.forEach(m=>m.add(map));
   overlays.circles.forEach(m=>m.add(map));
   overlays.polygons.forEach(m=>m.add(map));
-  const createOverlayModal = new CreateOverlayModal();
+  overlays.polyline.add(map);
+
   const modals = new ModalCollection(
-    createOverlayModal);
+    new CreateOverlayModal(),
+    new CancelModal(),
+    new OKCancelModal());
 
   MapHandler.init(map, overlays, TileLayerWrapper.layers, modals);
   
   MapHandler.setButtonClick("addPoint-btn", MapHandler.markerCollect);
   MapHandler.setButtonClick("addCircle-btn", MapHandler.circleCollect);
+  MapHandler.setButtonClick("addPolygon-btn", MapHandler.polygonCollect);
   
   MapHandler.setButtonClick("save-btn", MapHandler.overlaySave);
   MapHandler.setButtonClick("clear-btn", MapHandler.overlayClear);

static/index.html

@@ -22,8 +22,8 @@
   <button id="addCircle-btn">&compfn;</button>
   <button id="addPolygon-btn">&diamond;</button>
   <div id="subControls">
+    <button id="tiles-btn">&Colon;</button>
   <button id="save-btn">&darr;</button>
-  <button id="tiles-btn">&Colon;</button>
   <button id="clear-btn">&olarr;</button>
   <button id="menu-btn">&equiv;</button>
   </div>
@@ -49,20 +49,23 @@
 </div>
 
 <div id="cancel-container">
+  <span id="cancel-msg"></span>
+  <div class="multiBtn-container">
   <button class="negative-btn" id="cancel-btn">Cancel</button>
+  </div>
 </div>
 
 <div id="info-container">
   <button class="closeBtn" id="info-closeBtn">x</button>
-  <div class="info-content>
+  <div class="info-content">
   </div>
 </div>
 
 <div id="confirm-container">
   <span id="confirm-msg"></span>
   <div class="multiBtn-container">
-    <button class="positive-btn" id="yes-btn">Yes</button>
+    <button class="positive-btn" id="yes-btn">OK</button>
-    <button class="negative-btn" id="no-btn">No</button>
+    <button class="negative-btn" id="no-btn">Cancel</button>
   </div>
 </div>
 

static/onyx-scry.js

@@ -52,15 +52,24 @@ class Polygon extends OverlayBase {
     constructor(name, desc, points, options) {
         super(name, desc, points, options);
         this.self = L.polygon(points, options);
+        this.self.bindPopup(`<h3>${name}</h3><p>${desc}</p>`);
     }
 }
-class Path extends OverlayBase {
+class Polyline extends OverlayBase {
     constructor() {
         super("", "", [], {});
         this.self = L.polyline([]);
     }
     insertPoint(pt) {
         this.self.addLatLng(pt);
+        this.points.push(pt);
+    }
+    clearPoints() {
+        this.points = [];
+        this.self.setLatLngs([]);
+    }
+    numPoints() {
+        return this.self.getLatLngs().length;
     }
 }
 class OverlayState {
@@ -68,6 +77,7 @@ class OverlayState {
         this.markers = [];
         this.circles = [];
         this.polygons = [];
+        this.polyline = new Polyline();
     }
     static load() {
         const store = localStorage.getItem("overlay_state");
@@ -77,6 +87,7 @@ class OverlayState {
                 markers: model.markers.map((m) => OverlayState.fromData(m)),
                 circles: model.circles.map((c) => OverlayState.fromData(c)),
                 polygons: model.polygons.map((p) => OverlayState.fromData(p)),
+                polyline: new Polyline(),
             };
         }
         else {
@@ -239,6 +250,9 @@ class CreateOverlayModal {
                     submitBtn.onclick = () => {
                         const name = TextUtils.encodeHTML(_this.nameField());
                         const desc = TextUtils.encodeHTML(_this.descField());
+                        if (name.trim().length < 1 || desc.trim().length < 1) {
+                            return;
+                        }
                         const point = new Marker(name, desc, args.latlng, { title: name, alt: name });
                         point.add(args.map);
                         args.overlays.markers.push(point);
@@ -255,6 +269,9 @@ class CreateOverlayModal {
                         const radius = _this.radiusField();
                         const name = TextUtils.encodeHTML(_this.nameField());
                         const desc = TextUtils.encodeHTML(_this.descField());
+                        if (name.trim().length < 1 || desc.trim().length < 1) {
+                            return;
+                        }
                         const circle = new Circle(name, desc, args.latlng, { radius: Number(radius) || 500 });
                         circle.add(args.map);
                         args.overlays.circles.push(circle);
@@ -263,16 +280,93 @@ class CreateOverlayModal {
                 }
                 break;
             case OverlayType.POLYGON:
+                if (title) {
+                    title.innerHTML = "Add Polygon";
+                }
+                if (submitBtn) {
+                    submitBtn.onclick = () => {
+                        const name = TextUtils.encodeHTML(_this.nameField());
+                        const desc = TextUtils.encodeHTML(_this.descField());
+                        if (name.trim().length < 1 || desc.trim().length < 1) {
+                            return;
+                        }
+                        const polygon = new Polygon(name, desc, args.points, {});
+                        polygon.add(args.map);
+                        args.overlays.polygons.push(polygon);
+                        _this.setVisible(false);
+                    };
+                }
                 break;
         }
     }
 }
+class CancelModal {
+    self() {
+        return document.getElementById("cancel-container");
+    }
+    cancelMsg() {
+        return document.getElementById("cancel-msg");
+    }
+    cancelBtn() {
+        return document.getElementById("cancel-btn");
+    }
+    visible() {
+        var _a;
+        return ((_a = this.self()) === null || _a === void 0 ? void 0 : _a.style.display) != "none";
+    }
+    setVisible(v) {
+        const modal = this.self();
+        if (modal) {
+            modal.style.display = v ? "block" : "none";
+        }
+    }
+    setMsg(s) {
+        const msg = this.cancelMsg();
+        if (msg) {
+            msg.innerText = s;
+        }
+    }
+}
+class OKCancelModal {
+    self() {
+        return document.getElementById("confirm-container");
+    }
+    confirmMsg() {
+        return document.getElementById("confirm-msg");
+    }
+    okBtn() {
+        return document.getElementById("yes-btn");
+    }
+    cancelBtn() {
+        return document.getElementById("no-btn");
+    }
+    visible() {
+        var _a;
+        return ((_a = this.self()) === null || _a === void 0 ? void 0 : _a.style.display) != "none";
+    }
+    setVisible(v) {
+        const modal = this.self();
+        if (modal) {
+            modal.style.display = v ? "block" : "none";
+        }
+    }
+    setMsg(s) {
+        const msg = this.confirmMsg();
+        if (msg) {
+            msg.innerText = s;
+        }
+    }
+}
 class ModalCollection {
-    constructor(createOverlay) {
+    constructor(createOverlay, cancel, okCancel) {
         this.createOverlay = createOverlay;
+        this.cancel = cancel;
+        this.okCancel = okCancel;
     }
     closeAll() {
         this.createOverlay.setVisible(false);
+        this.cancel.setVisible(false);
+        this.okCancel.setVisible(false);
     }
 }
 class MapHandler {
@@ -301,7 +395,7 @@ class MapHandler {
                 if (addPointBtn) {
                     addPointBtn.classList.remove("activeBtn");
                 }
-                self.map.off("click", this.addMarker);
+                self.map.off("click", MapHandler.addMarker);
             }
             catch (_a) { }
             try {
@@ -309,33 +403,57 @@ class MapHandler {
                 if (addCircleBtn) {
                     addCircleBtn.classList.remove("activeBtn");
                 }
-                self.map.off("click", this.addCircle);
+                self.map.off("click", MapHandler.addCircle);
             }
             catch (_b) { }
+            try {
+                const addPolygonBtn = document.getElementById("addPolygon-btn");
+                if (addPolygonBtn) {
+                    addPolygonBtn.classList.remove("activeBtn");
+                }
+                self.map.off("click", MapHandler.polygonAddPoint);
+            }
+            catch (_c) { }
         }
     }
     static addMarker(e) {
         const self = MapHandler.instance;
         if (self) {
-            self.modals.createOverlay.setVisible(true);
+            self.modals.cancel.setVisible(false);
             self.modals.createOverlay.setState(OverlayType.POINT, {
                 latlng: e.latlng,
                 map: self.map,
                 overlays: self.overlays,
             });
             MapHandler.resetMapClick();
+            self.modals.createOverlay.setVisible(true);
         }
     }
     static addCircle(e) {
         const self = MapHandler.instance;
         if (self) {
-            self.modals.createOverlay.setVisible(true);
+            self.modals.cancel.setVisible(false);
             self.modals.createOverlay.setState(OverlayType.CIRCLE, {
                 latlng: e.latlng,
                 map: self.map,
                 overlays: self.overlays,
             });
             MapHandler.resetMapClick();
+            self.modals.createOverlay.setVisible(true);
+        }
+    }
+    static addPolygon(e) {
+        const self = MapHandler.instance;
+        if (self) {
+            self.modals.okCancel.setVisible(false);
+            self.modals.createOverlay.setState(OverlayType.POLYGON, {
+                points: self.overlays.polyline.points,
+                map: self.map,
+                overlays: self.overlays,
+            });
+            MapHandler.resetMapClick();
+            self.overlays.polyline.clearPoints();
+            self.modals.createOverlay.setVisible(true);
         }
     }
     static circleCollect(e) {
@@ -345,6 +463,15 @@ class MapHandler {
             MapHandler.resetMapClick();
             e.target.classList.add("activeBtn");
             self.map.on("click", MapHandler.addCircle);
+            const cancelBtn = self.modals.cancel.cancelBtn();
+            if (cancelBtn) {
+                cancelBtn.onclick = () => {
+                    self.modals.closeAll();
+                    MapHandler.resetMapClick();
+                };
+            }
+            self.modals.cancel.setMsg("Placing circle");
+            self.modals.cancel.setVisible(true);
         }
     }
     static markerCollect(e) {
@@ -354,18 +481,105 @@ class MapHandler {
             MapHandler.resetMapClick();
             e.target.classList.add("activeBtn");
             self.map.on("click", MapHandler.addMarker);
+            const cancelBtn = self.modals.cancel.cancelBtn();
+            if (cancelBtn) {
+                cancelBtn.onclick = () => {
+                    self.modals.closeAll();
+                    MapHandler.resetMapClick();
+                };
+            }
+            self.modals.cancel.setMsg("Placing marker");
+            self.modals.cancel.setVisible(true);
+        }
+    }
+    static polygonCollect(e) {
+        const self = MapHandler.instance;
+        if (self) {
+            self.modals.closeAll();
+            MapHandler.resetMapClick();
+            e.target.classList.add("activeBtn");
+            // show cancel -- on cancel, clear polyline and reset map handling
+            const cancelBtn = self.modals.cancel.cancelBtn();
+            if (cancelBtn) {
+                cancelBtn.onclick = MapHandler.polygonClearPoints;
+            }
+            self.modals.cancel.setMsg("Creating polygon");
+            self.modals.cancel.setVisible(true);
+            self.map.on("click", MapHandler.polygonAddPoint);
+        }
+    }
+    static polygonClearPoints(e) {
+        const self = MapHandler.instance;
+        if (self) {
+            self.modals.closeAll();
+            self.overlays.polyline.clearPoints();
+            MapHandler.resetMapClick();
+        }
+    }
+    static polygonAddPoint(e) {
+        const self = MapHandler.instance;
+        if (self) {
+            self.overlays.polyline.insertPoint(e.latlng);
+            if (self.overlays.polyline.numPoints() >= 3) {
+                self.modals.cancel.setVisible(false);
+                const okBtn = self.modals.okCancel.okBtn();
+                if (okBtn) {
+                    okBtn.onclick = MapHandler.addPolygon;
+                }
+                const cancelBtn = self.modals.okCancel.cancelBtn();
+                if (cancelBtn) {
+                    cancelBtn.onclick = MapHandler.polygonClearPoints;
+                }
+                self.modals.okCancel.setMsg("Creating polygon");
+                self.modals.okCancel.setVisible(true);
+            }
         }
     }
     static overlaySave(e) {
         const self = MapHandler.instance;
         if (self) {
-            OverlayState.save(self.overlays);
+            self.modals.closeAll();
+            MapHandler.resetMapClick();
+            e.target.classList.add("activeBtn");
+            self.modals.okCancel.setMsg("Save current map overlays?");
+            const okBtn = self.modals.okCancel.okBtn();
+            if (okBtn) {
+                okBtn.onclick = () => {
+                    OverlayState.save(self.overlays);
+                    self.modals.okCancel.setVisible(false);
+                    // show info modal "Save complete" 
+                };
+            }
+            const cancelBtn = self.modals.okCancel.cancelBtn();
+            if (cancelBtn) {
+                cancelBtn.onclick = () => {
+                    self.modals.okCancel.setVisible(false);
+                };
+            }
+            self.modals.okCancel.setVisible(true);
         }
     }
     static overlayClear(e) {
         const self = MapHandler.instance;
         if (self) {
-            self.overlays = OverlayState.clear(self.overlays, self.map);
+            self.modals.closeAll();
+            MapHandler.resetMapClick();
+            e.target.classList.add("activeBtn");
+            self.modals.okCancel.setMsg("Clear all map overlays (will not affect saved data)?");
+            const okBtn = self.modals.okCancel.okBtn();
+            if (okBtn) {
+                okBtn.onclick = () => {
+                    self.overlays = OverlayState.clear(self.overlays, self.map);
+                    self.modals.okCancel.setVisible(false);
+                };
+            }
+            const cancelBtn = self.modals.okCancel.cancelBtn();
+            if (cancelBtn) {
+                cancelBtn.onclick = () => {
+                    self.modals.okCancel.setVisible(false);
+                };
+            }
+            self.modals.okCancel.setVisible(true);
         }
     }
     static swapTiles(e) {
@@ -397,11 +611,12 @@ function init() {
     overlays.markers.forEach(m => m.add(map));
     overlays.circles.forEach(m => m.add(map));
     overlays.polygons.forEach(m => m.add(map));
-    const createOverlayModal = new CreateOverlayModal();
+    overlays.polyline.add(map);
-    const modals = new ModalCollection(createOverlayModal);
+    const modals = new ModalCollection(new CreateOverlayModal(), new CancelModal(), new OKCancelModal());
     MapHandler.init(map, overlays, TileLayerWrapper.layers, modals);
     MapHandler.setButtonClick("addPoint-btn", MapHandler.markerCollect);
     MapHandler.setButtonClick("addCircle-btn", MapHandler.circleCollect);
+    MapHandler.setButtonClick("addPolygon-btn", MapHandler.polygonCollect);
     MapHandler.setButtonClick("save-btn", MapHandler.overlaySave);
     MapHandler.setButtonClick("clear-btn", MapHandler.overlayClear);
     MapHandler.setButtonClick("tiles-btn", MapHandler.swapTiles);

static/style.css

@@ -169,9 +169,9 @@ button.closeBtn:hover {
   color: crimson;
 }
 
-button#createOverlay-submitBtn {
+button#createOverlay-submitBtn, button.positive-btn, button.negative-btn {
   font-size: 150%;
-  background: transparent;;
+  background: transparent;
   color: white;
   border: solid 2px dimgray;
   position: relative;
@@ -186,14 +186,42 @@ button#createOverlay-submitBtn:hover {
   border: solid 2px white;
 }
 
+button.positive-btn, button.negative-btn {
+  font-size: 66.66%;
+  margin-top: 1em;
+}
+
+button.positive-btn {
+  border: solid 2px #1f9b92;
+  float: left;
+}
+
+button.positive-btn:hover {
+  color: black;
+  background: #1f9b92;
+}
+
+button.negative-btn {
+  float: right;
+}
+
+button.negative-btn:hover {
+  color: black;
+  background: crimson;
+  border: solid 2px crimson;
+}
+
 #cancel-container, #confirm-container, #info-container {
   position: fixed;
-  font-size: 200%;
+  font-size: 250%;
-  bottom: 1.5em;
+  bottom: 5em;
   display: none;
   left: 50%;
-  transform: translateY(-50%);
+  transform: translateX(-50%);
   background: black;
+  z-index: 10;
+  color: white;
+  padding: 0.5em;
 }
 
 #import-export-container {