1 files changed, 73 insertions, 0 deletions

diff --git a/catalog-ui/src/app/ng2/services/modal.service.ts b/catalog-ui/src/app/ng2/services/modal.service.ts
new file mode 100644
index 0000000000..32192f40c2
--- /dev/null
+++ b/catalog-ui/src/app/ng2/services/modal.service.ts
@@ -0,0 +1,73 @@
+import { Injectable, Type, ViewContainerRef, ApplicationRef, ComponentFactory, ComponentFactoryResolver, ComponentRef } from '@angular/core';
+import { ModalModel, ButtonModel } from 'app/models';
+import { ModalComponent } from 'app/ng2/components/modal/modal.component';
+
+
+@Injectable()
+export class ModalService {
+    currentModal: ComponentRef<any>;
+
+
+    constructor(private componentFactoryResolver: ComponentFactoryResolver, private applicationRef: ApplicationRef) { }
+
+    
+    /* Shortcut method to open a simple modal with title, message, and close button that simply closes the modal. */
+    public openAlertModal(title: string, message: string, closeButtonText?:string) {
+        let closeButton: ButtonModel = new ButtonModel(closeButtonText || 'Close', 'grey', this.closeCurrentModal);
+        let modalModel: ModalModel = new ModalModel('sm', title, message, [closeButton]);
+        this.createCustomModal(modalModel).instance.open();
+    }
+
+
+    /**
+     * Shortcut method to open a basic modal with title, message, and an action button with callback, as well as close button.
+     * NOTE: To close the modal from within the callback, use modalService.closeCurrentModal() //if you run into zone issues with callbacks see:https://stackoverflow.com/questions/36566698/how-to-dynamically-create-bootstrap-modals-as-angular2-components
+     * @param title Heading for modal
+     * @param message Message for modal
+     * @param actionButtonText Blue call to action button
+     * @param actionButtonCallback function to invoke when button is clicked
+     * @param cancelButtonText text for close/cancel button
+     */    
+    public openActionModal = (title:string, message:string, actionButtonText:string, actionButtonCallback:Function, cancelButtonText:string) => {
+        let actionButton: ButtonModel = new ButtonModel(actionButtonText, 'blue', actionButtonCallback);
+        let cancelButton: ButtonModel = new ButtonModel(cancelButtonText, 'grey', this.closeCurrentModal);
+        let modalModel: ModalModel = new ModalModel('sm', title, message, [actionButton, cancelButton]);
+        this.createCustomModal(modalModel).instance.open();
+    }
+    
+
+    /* Use this method to create a modal with title, message, and completely custom buttons. Use response.instance.open() to open */
+    public createCustomModal = (customModalData: ModalModel): ComponentRef<ModalComponent> => {
+        let customModal: ComponentRef<ModalComponent> = this.createDynamicComponent(ModalComponent);
+        customModal.instance.input = customModalData;
+        this.currentModal = customModal;
+
+        return customModal;
+    }
+
+    
+    public closeCurrentModal = () => {
+        if (!this.currentModal) return;
+        this.currentModal.instance.close();
+        this.currentModal.destroy();
+    }
+
+
+    //Creates a component dynamically (aka during runtime). If a view container is not specified, it will append the new component to the app root. 
+    //To subscribe to an event from invoking component: componentRef.instance.clicked.subscribe((m) => console.log(m.name));
+    private createDynamicComponent<T>(componentType: Type<T>, viewContainerRef?:ViewContainerRef): ComponentRef<any> {
+
+        viewContainerRef = viewContainerRef || this.getRootViewContainerRef();
+        viewContainerRef.clear();
+
+        let factory: ComponentFactory<any> = this.componentFactoryResolver.resolveComponentFactory(componentType); //Ref: https://angular.io/guide/dynamic-component-loader
+        let componentRef = viewContainerRef.createComponent(factory);
+        
+        return componentRef; 
+    }
+
+    
+    private getRootViewContainerRef(): ViewContainerRef {
+        return this.applicationRef.components[0].instance.viewContainerRef;
+    }
+}
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