Decouple the analytics component from the diagrams component

ng2-components/ng2-activiti-diagrams/src/components/raphael/raphael.service.ts

@@ -0,0 +1,69 @@
+/*!
+ * @license
+ * Copyright 2016 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { Injectable } from '@angular/core';
+
+@Injectable()
+export class RaphaelService {
+
+    paper: any;
+    width: number = 300;
+    height: number = 400 ;
+    private ctx: any;
+
+    constructor() {
+    }
+
+    public getInstance(element: any): any {
+        if (!this.paper) {
+            this.ctx = element.nativeElement;
+            this.refresh();
+        }
+        return this.paper;
+    }
+
+    private refresh(): any {
+        this.ngOnDestroy();
+        this.paper = this.getPaperBuilder(this.ctx);
+    }
+
+    public getPaperBuilder(ctx: any): any {
+        if (typeof Raphael === 'undefined') {
+            throw new Error('ng2-charts configuration issue: Embedding Chart.js lib is mandatory');
+        }
+        let paper = new Raphael(ctx, this.width, this.height);
+        // paper.setViewBox(0, 0, 583, 344.08374193550003, false);
+        // paper.renderfix();
+        return paper;
+    }
+
+    private ngOnDestroy(): any {
+        if (this.paper) {
+            this.paper.clear();
+            this.paper = void 0;
+        }
+    }
+
+    public setting(width: number, height: number): void {
+        this.width = width;
+        this.height = height;
+    }
+
+    public reset(): any {
+        this.ngOnDestroy();
+    }
+}