1 files changed, 86 insertions, 0 deletions
diff --git a/catalog-ui/src/app/ng2/components/ui/loader/loader.component.ts b/catalog-ui/src/app/ng2/components/ui/loader/loader.component.ts
new file mode 100644
index 0000000000..f66aa551e2
--- /dev/null
+++ b/catalog-ui/src/app/ng2/components/ui/loader/loader.component.ts
@@ -0,0 +1,86 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+/**
+ * Created by rc2122 on 6/6/2017.
+ */
+import { Component, Input, ViewContainerRef, SimpleChanges} from "@angular/core";
+@Component({
+    selector: 'loader',
+    templateUrl: './loader.component.html',
+    styleUrls: ['./loader.component.less']
+})
+export class LoaderComponent {
+
+    @Input() display: boolean;
+    @Input() size: string;// small || medium || large
+    @Input() relative: boolean; // If is relative is set to true, loader will appear over parent element. Otherwise, will be fixed over the entire page.
+    @Input() loaderDelay: number; //optional - number of ms to delay loader display.
+    
+    private isVisible: boolean = false;
+    private offset : {
+        top: string;
+        left: string;
+        width: string;
+        height: string;
+    };
+
+    constructor(private viewContainerRef: ViewContainerRef) { 
+    }
+
+    ngOnInit() {
+        if (!this.size) {
+            this.size = 'large';
+        }
+        if (this.display === true) {
+            this.changeLoaderDisplay(true);
+        }
+    }
+
+    ngOnChanges(changes: SimpleChanges) {
+        if(changes.display){
+            this.changeLoaderDisplay(this.display);
+        }
+    }
+
+    private changeLoaderDisplay = (display: boolean): void => {
+        if (display) {
+            window.setTimeout((): void => {
+                this.display && this.showLoader(); //only show loader if this.display has not changed in the meanwhile.
+            }, this.loaderDelay || 0);
+        } else {
+            this.isVisible = false;
+        }
+    }
+
+    private showLoader = () => {
+        if (this.relative === true) {
+            let parentElement = this.viewContainerRef.element.nativeElement.parentElement;
+            this.offset = {
+                left: (parentElement.offsetLeft) ? parentElement.offsetLeft + "px" : undefined,
+                top: (parentElement.offsetTop) ? parentElement.offsetTop + "px" : undefined,
+                width: (parentElement.offsetWidth) ? parentElement.offsetWidth + "px" : undefined,
+                height: (parentElement.offsetHeight) ? parentElement.offsetHeight + "px" : undefined
+            };
+        }
+        this.isVisible = true;
+    }
+
+}