3 files changed, 496 insertions, 0 deletions
diff --git a/src/angular/tooltip/tooltip-template.component.ts b/src/angular/tooltip/tooltip-template.component.ts
new file mode 100644
index 0000000..7cb7f72
--- /dev/null
+++ b/src/angular/tooltip/tooltip-template.component.ts
@@ -0,0 +1,20 @@
+import { Component, ViewChild, ViewContainerRef, AfterViewInit } from '@angular/core';
+import { BehaviorSubject } from 'rxjs/BehaviorSubject';
+
+@Component({
+    selector: 'tooltip-template',
+    template: `
+    <div class="sdc-tooltip-template-container">
+        <ng-container #templateContainer></ng-container>
+    </div>`
+})
+
+export class TooltipTemplateComponent implements AfterViewInit {
+    @ViewChild('templateContainer', {read: ViewContainerRef}) public container: ViewContainerRef;
+
+    public viewReady: BehaviorSubject<boolean> = new BehaviorSubject<boolean>(false);
+
+    ngAfterViewInit() : void {
+        this.viewReady.next(true);
+    }
+}
diff --git a/src/angular/tooltip/tooltip.directive.ts b/src/angular/tooltip/tooltip.directive.ts
new file mode 100644
index 0000000..77cec62
--- /dev/null
+++ b/src/angular/tooltip/tooltip.directive.ts
@@ -0,0 +1,459 @@
+import { Directive, ElementRef, HostListener, OnInit, Input, Renderer, TemplateRef } from '@angular/core';
+import { TooltipTemplateComponent } from './tooltip-template.component';
+import { CreateDynamicComponentService } from '../utils/create-dynamic-component.service';
+
+const pixel = 'px';
+const leftStyle = 'left';
+const topStyle = 'top';
+const showSuffix = 'show';
+const rightBottomSuffix = 'right__bottom';
+const centerMiddleSuffix = 'center__middle';
+
+@Directive({
+    selector: '[sdc-tooltip]'
+})
+export class TooltipDirective implements OnInit {
+    @Input('tooltip-text') public text = 'tooltip';
+    @Input('tooltip-placement') public placement: TooltipPlacement = TooltipPlacement.Top;
+    @Input('tooltip-css-class') public customCssClass: string;
+    @Input('tooltip-template') public template: TemplateRef<any>;
+    @Input('tooltip-arrow-offset') public arrowOffset: number = 10;
+    @Input('tooltip-arrow-placement') public arrowPlacement: ArrowPlacement = ArrowPlacement.LeftTop;
+    @Input('tooltip-offset') public tooltipOffset: number = 3;
+
+    private cssClass: string = 'sdc-tooltip'; // default css class
+    private tooltip: any; // tooltip html element
+    private elemPosition: any;
+    private tooltipTemplateContainer: any;
+
+    private scrollEventHandler = () => {};
+
+    constructor(
+        private elementRef: ElementRef,
+        private service: CreateDynamicComponentService,
+        private renderer: Renderer) {
+
+        this.elementRef.nativeElement.title = "";
+    }
+
+    @HostListener('mouseenter')
+    public onMouseEnter() {
+        this.show();
+        this.activateScrollEvent();
+    }
+
+    @HostListener('mouseleave')
+    public onMouseLeave() {
+        this.hide();
+        this.deactivateScrollEvent();
+    }
+
+    ngOnInit(): void {
+        this.initScrollEvent();
+    }
+
+    private get ScreenWidth() {
+        return document.documentElement.clientWidth;
+    }
+
+    private get ScreenHeight() {
+        return document.documentElement.clientHeight;
+    }
+
+    private create() {
+            this.tooltipTemplateContainer = this.service.createComponentDynamically(TooltipTemplateComponent, document.body);
+
+            /**
+             * Creating a view (injecting our template) from template in our component.
+             */
+            this.tooltip = this.tooltipTemplateContainer.location.nativeElement.querySelector(
+                '.sdc-tooltip-template-container');
+
+            if (this.template) {
+                this.tooltipTemplateContainer.instance.container.createEmbeddedView(this.template);
+            } else {
+                this.tooltip.textContent = this.text ? this.text : 'tooltip';
+            }
+
+            this.setCssClass(true);
+    }
+
+    private destroy() {
+        this.tooltipTemplateContainer.destroy();
+        this.tooltip = null;
+    }
+
+    private show() {
+        this.create();
+
+        /**
+         *  View is ready (AfterViewInit event in template component)
+         */
+        this.tooltipTemplateContainer.instance.viewReady.subscribe((isReady) => {
+           if (isReady) {
+               this.setPosition();
+               this.toggleShowCssClass(true); // add css class
+           }
+        });
+    }
+
+    private hide() {
+        this.toggleShowCssClass(false); // remove css class
+
+        this.destroy();
+    }
+
+    private toggleShowCssClass(isAdd: boolean) {
+        if (this.tooltip) {
+            this.setCssClass(isAdd, '-' + showSuffix);
+        }
+    }
+
+    /**
+     * Adds placement css class and sets tooltip position in style
+     */
+    private setPosition() {
+        const tooltipPos: IPlacementData = this.getPlacementData();
+
+        const placementSuffix: string = TooltipPlacement[tooltipPos.placement].toLowerCase();
+
+        this.setCssClass(true, '-' + placementSuffix);
+
+        this.setAdditionalCssClass(placementSuffix);
+
+        this.renderer.setElementStyle(this.tooltip, topStyle, tooltipPos.top + pixel);
+        this.renderer.setElementStyle(this.tooltip, leftStyle, tooltipPos.left + pixel);
+    }
+
+    private setAdditionalCssClass(placementSuffix: string) {
+        if (this.arrowPlacement === ArrowPlacement.RightBottom) {
+            this.setCssClass(true, '-' + placementSuffix + '-' + rightBottomSuffix);
+        } else if (this.arrowPlacement === ArrowPlacement.CenterMiddle) {
+            this.setCssClass(true, '-' + placementSuffix + '-' + centerMiddleSuffix);
+        }
+    }
+
+    private setCssClass(isAdd: boolean, suffix: string = '') {
+        this.renderer.setElementClass(this.tooltip, this.cssClass + suffix, isAdd);
+
+        if (this.customCssClass) {
+            this.renderer.setElementClass(this.tooltip, this.customCssClass + suffix, isAdd);
+        }
+    }
+
+    /**
+     * Checks the specified placement (first element in array), if it is not valid - checks other placements
+     * @returns {IPlacementData}
+     */
+    private getPlacementData(): IPlacementData {
+        const placement: TooltipPlacement = this.placement;
+        let tooltipPos: IPlacementData;
+
+        const tooltipPosWithPlacement = this.getPlacement.bind(this, placement);
+
+        // TODO add comments - done
+        switch (placement) {
+            case TooltipPlacement.Left:
+                tooltipPos = tooltipPosWithPlacement(
+                    TooltipPlacement.Right,
+                    TooltipPlacement.Top,
+                    TooltipPlacement.Bottom);
+                break;
+
+            case TooltipPlacement.Right:
+                tooltipPos = tooltipPosWithPlacement(
+                    TooltipPlacement.Left,
+                    TooltipPlacement.Top,
+                    TooltipPlacement.Bottom);
+                break;
+
+            case TooltipPlacement.Top:
+                tooltipPos = tooltipPosWithPlacement(
+                    TooltipPlacement.Bottom,
+                    TooltipPlacement.Left,
+                    TooltipPlacement.Right);
+                break;
+
+            case TooltipPlacement.Bottom:
+                tooltipPos = tooltipPosWithPlacement(
+                    TooltipPlacement.Top,
+                    TooltipPlacement.Left,
+                    TooltipPlacement.Right);
+                break;
+        }
+
+        return tooltipPos;
+    }
+
+    /**
+     * Returns valid tooltip position data
+     * @param {TooltipPlacement} placement
+     * @param {TooltipPlacement} additionalPlacements
+     * @returns {IPlacementData}
+     */
+    private getPlacement(placement: TooltipPlacement,
+                         ...additionalPlacements: TooltipPlacement[],
+                         ): IPlacementData {
+        const placements: TooltipPlacement[] = [placement, ...additionalPlacements];
+        const filterPlacements = placements
+            .map((pl) => this.getPosition(pl))
+            .filter((item) => this.validatePosition(item));
+        return filterPlacements.length > 0 ? filterPlacements[0] : this.getPosition(placement);
+    }
+
+    /**
+     * Returns input data for getPosition method
+     * @returns {ITooltipPositionParams}
+     */
+    private getPlacementInputParams(): ITooltipPositionParams {
+        this.elemPosition = this.elementRef.nativeElement.getBoundingClientRect();
+
+        return {
+            elemHeight: this.elementRef.nativeElement.offsetHeight,
+            elemLeft: this.elemPosition.left,
+            elemTop: this.elemPosition.top,
+            elemWidth: this.elementRef.nativeElement.offsetWidth,
+            pageYOffset: window.pageYOffset,
+            tooltipHeight: this.tooltip.offsetHeight, // .clientHeight,
+            tooltipOffset: this.tooltipOffset,
+            tooltipWidth: this.tooltip.offsetWidth,
+            arrowOffset: this.arrowOffset
+        };
+    }
+
+    /**
+     * Returns tooltip position data
+     * @param {TooltipPlacement} placement (left, top, right, bottom)
+     * @returns {IPlacementData}
+     */
+    private getPosition(placement: TooltipPlacement): IPlacementData {
+        switch(this.arrowPlacement) {
+            case ArrowPlacement.LeftTop:
+                return this.getLeftTopPosition(placement);
+
+            case ArrowPlacement.RightBottom:
+                return this.getRightBottomPosition(placement);
+        }
+
+        return this.getCenterMiddlePosition(placement);
+    }
+
+    /**
+     * Returns tooltip position data (center / middle arrow)
+     * @param {TooltipPlacement} placement (left, top, right, bottom)
+     * @returns {IPlacementData}
+     */
+    private getCenterMiddlePosition(placement: TooltipPlacement): IPlacementData {
+        let left = 0;
+        let top = 0;
+
+        const inputPos: ITooltipPositionParams = this.getPlacementInputParams();
+        switch (placement) {
+            case TooltipPlacement.Left:
+                left = inputPos.elemLeft - inputPos.tooltipWidth - inputPos.tooltipOffset;
+                top = inputPos.elemTop + inputPos.pageYOffset + inputPos.elemHeight / 2 - inputPos.tooltipHeight / 2;
+                break;
+
+            case TooltipPlacement.Right:
+                left = inputPos.elemLeft + inputPos.elemWidth + inputPos.tooltipOffset;
+                top = inputPos.elemTop + inputPos.pageYOffset + inputPos.elemHeight / 2 - inputPos.tooltipHeight / 2;
+                break;
+
+            case TooltipPlacement.Top:
+                left = inputPos.elemLeft + inputPos.elemWidth / 2 - inputPos.tooltipWidth / 2;
+                top = inputPos.elemTop + inputPos.pageYOffset - inputPos.tooltipHeight - inputPos.tooltipOffset;
+                break;
+
+            case TooltipPlacement.Bottom:
+                left = inputPos.elemLeft + inputPos.elemWidth / 2 - inputPos.tooltipWidth / 2;
+                top = inputPos.elemTop + inputPos.pageYOffset + inputPos.elemHeight + inputPos.tooltipOffset;
+                break;
+        }
+
+        return {
+            height: inputPos.tooltipHeight,
+            left,
+            placement,
+            top,
+            width: inputPos.tooltipWidth,
+            pageYOffset: inputPos.pageYOffset
+        } as IPlacementData;
+    }
+
+    /**
+     * Returns tooltip position data (left / top arrow)
+     * @param {TooltipPlacement} placement (left, top, right, bottom)
+     * @returns {IPlacementData}
+     */
+    private getLeftTopPosition(placement: TooltipPlacement): IPlacementData {
+        let left = 0;
+        let top = 0;
+
+        const inputPos: ITooltipPositionParams = this.getPlacementInputParams();
+        switch (placement) {
+            case TooltipPlacement.Left:
+                left = inputPos.elemLeft - inputPos.tooltipWidth - inputPos.tooltipOffset;
+                top = inputPos.elemTop + inputPos.pageYOffset + inputPos.elemHeight / 2 - inputPos.arrowOffset;
+                break;
+
+            case TooltipPlacement.Right:
+                left = inputPos.elemLeft + inputPos.elemWidth + inputPos.tooltipOffset;
+                top = inputPos.elemTop + inputPos.pageYOffset + inputPos.elemHeight / 2 - inputPos.arrowOffset;
+                break;
+
+            case TooltipPlacement.Top:
+                left = inputPos.elemLeft + inputPos.elemWidth / 2 - inputPos.arrowOffset;
+                top = inputPos.elemTop + inputPos.pageYOffset - inputPos.tooltipHeight - inputPos.tooltipOffset;
+                break;
+
+            case TooltipPlacement.Bottom:
+                left = inputPos.elemLeft + inputPos.elemWidth / 2 - inputPos.arrowOffset;
+                top = inputPos.elemTop + inputPos.pageYOffset + inputPos.elemHeight + inputPos.tooltipOffset;
+                break;
+        }
+
+        return {
+            height: inputPos.tooltipHeight,
+            left,
+            placement,
+            top,
+            width: inputPos.tooltipWidth,
+            pageYOffset: inputPos.pageYOffset
+        } as IPlacementData;
+    }
+
+    /**
+     * Returns tooltip position data (right / bottom arrow)
+     * @param {TooltipPlacement} placement (left, top, right, bottom)
+     * @returns {IPlacementData}
+     */
+    private getRightBottomPosition(placement: TooltipPlacement): IPlacementData {
+        let left = 0;
+        let top = 0;
+
+        const inputPos: ITooltipPositionParams = this.getPlacementInputParams();
+        switch (placement) {
+            case TooltipPlacement.Left:
+                left = inputPos.elemLeft - inputPos.tooltipWidth - inputPos.tooltipOffset;
+                top = inputPos.elemTop + inputPos.pageYOffset + inputPos.elemHeight / 2 - inputPos.tooltipHeight + inputPos.arrowOffset;
+                break;
+
+            case TooltipPlacement.Right:
+                left = inputPos.elemLeft + inputPos.elemWidth + inputPos.tooltipOffset;
+                top = inputPos.elemTop + inputPos.pageYOffset + inputPos.elemHeight / 2 - inputPos.tooltipHeight + inputPos.arrowOffset;
+                break;
+
+            case TooltipPlacement.Top:
+                left = inputPos.elemLeft + inputPos.elemWidth / 2 - inputPos.tooltipWidth + inputPos.arrowOffset;
+                top = inputPos.elemTop + inputPos.pageYOffset - inputPos.tooltipHeight - inputPos.tooltipOffset;
+                break;
+
+            case TooltipPlacement.Bottom:
+                left = inputPos.elemLeft + inputPos.elemWidth / 2 - inputPos.tooltipWidth + inputPos.arrowOffset;
+                top = inputPos.elemTop + inputPos.pageYOffset + inputPos.elemHeight + inputPos.tooltipOffset;
+                break;
+        }
+
+        return {
+            height: inputPos.tooltipHeight,
+            left,
+            placement,
+            top,
+            width: inputPos.tooltipWidth,
+            pageYOffset: inputPos.pageYOffset
+        } as IPlacementData;
+    }
+
+    /**
+     * Checks if tooltip position is valid
+     * @param {IPlacementData} pos
+     * @returns {boolean}
+     */
+    private validatePosition(pos: IPlacementData): boolean {
+        if (pos.left < 0 || pos.left + pos.width - 1 > this.ScreenWidth) {
+            return false;
+        }
+
+        if (pos.top - pos.pageYOffset < 0 || pos.top - pos.pageYOffset + pos.height - 1 > this.ScreenHeight) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Scrolling
+     */
+
+    private debounce(func: Function, wait: number, immediate?: boolean) {
+        let timeout;
+        return function() {
+            const context = this;
+            const args = arguments;
+            const later = () => {
+                timeout = null;
+                if (!immediate) {
+                    func.apply(context, args);
+                }
+            };
+            const callNow = immediate && !timeout;
+            clearTimeout(timeout);
+            timeout = setTimeout(later, wait);
+            if (callNow) {
+                func.apply(context, args);
+            }
+        };
+    }
+
+    private initScrollEvent() {
+        this.scrollEventHandler = this.debounce(() => {
+            try {
+                this.setPosition();
+            } catch (e) {
+
+            }
+        }, 10);
+    }
+
+    private activateScrollEvent() {
+        window.addEventListener('scroll', this.scrollEventHandler , true);
+    }
+
+    private deactivateScrollEvent() {
+        window.removeEventListener('scroll', this.scrollEventHandler , true);
+    }
+}
+
+export enum TooltipPlacement {
+    Left,
+    Right,
+    Top,
+    Bottom
+}
+
+export enum ArrowPlacement {
+    CenterMiddle,
+    LeftTop,
+    RightBottom
+}
+
+interface ITooltipPositionParams {
+    elemLeft: number;
+    elemTop: number;
+    elemWidth: number;
+    elemHeight: number;
+    tooltipWidth: number;
+    tooltipHeight: number;
+    tooltipOffset: number;
+    pageYOffset: number;
+    arrowOffset: number;
+}
+
+interface IPlacementData {
+    left: number;
+    top: number;
+    width: number;
+    height: number;
+    pageYOffset: number;
+    placement?: TooltipPlacement;
+}
diff --git a/src/angular/tooltip/tooltip.module.ts b/src/angular/tooltip/tooltip.module.ts
new file mode 100644
index 0000000..a4ad86d
--- /dev/null
+++ b/src/angular/tooltip/tooltip.module.ts
@@ -0,0 +1,17 @@
+import { NgModule } from '@angular/core';
+import { TooltipDirective } from './tooltip.directive';
+import { TooltipTemplateComponent } from './tooltip-template.component';
+
+@NgModule({
+    declarations: [
+        TooltipDirective,
+        TooltipTemplateComponent
+    ],
+    imports: [],
+    entryComponents: [TooltipTemplateComponent],
+    exports: [
+        TooltipDirective
+    ],
+})
+export class TooltipModule {
+}