AAE-3936 Tooltip card directive (#6330)

* AAE-3936 Tooltip card directive

* AAE-3936 Fix styles

lib/core/directives/tooltip-card/tooltip-card.directive.ts

@@ -0,0 +1,63 @@
+/*!
+ * @license
+ * Copyright 2019 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 { ComponentRef, Directive, ElementRef, HostListener, Input, OnInit } from '@angular/core';
+import { Overlay, OverlayPositionBuilder, OverlayRef } from '@angular/cdk/overlay';
+import { ComponentPortal } from '@angular/cdk/portal';
+import { TooltipCardComponent } from './tooltip-card.component';
+
+@Directive({ selector: '[adf-tooltip-card]' })
+export class TooltipCardDirective implements OnInit {
+
+    @Input('adf-tooltip-card') text = '';
+    @Input() image = '';
+    @Input() width = '300';
+    private overlayRef: OverlayRef;
+
+    constructor(
+        private overlay: Overlay,
+        private overlayPositionBuilder: OverlayPositionBuilder,
+        private elementRef: ElementRef) {
+    }
+
+    ngOnInit(): void {
+        const positionStrategy = this.overlayPositionBuilder
+            .flexibleConnectedTo(this.elementRef)
+            .withPositions([{
+                originX: 'start',
+                originY: 'top',
+                overlayX: 'start',
+                overlayY: 'bottom',
+                offsetY: -8
+            }]);
+
+        this.overlayRef = this.overlay.create({ positionStrategy });
+    }
+
+    @HostListener('mouseenter')
+    show() {
+        const tooltipRef: ComponentRef<TooltipCardComponent>
+            = this.overlayRef.attach(new ComponentPortal(TooltipCardComponent));
+        tooltipRef.instance.text = this.text;
+        tooltipRef.instance.image = this.image;
+        tooltipRef.instance.width = this.width;
+    }
+
+    @HostListener('mouseout')
+    hide() {
+        this.overlayRef.detach();
+    }
+}