primeng/fesm2015/primeng-scrollpanel.js

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import { ElementRef, NgZone, Input, ViewChild, Component, ChangeDetectionStrategy, NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { DomHandler } from 'primeng/dom';

var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
let ScrollPanel = class ScrollPanel {
    constructor(el, zone) {
        this.el = el;
        this.zone = zone;
        this.timeoutFrame = (fn) => setTimeout(fn, 0);
    }
    ngAfterViewInit() {
        this.zone.runOutsideAngular(() => {
            this.moveBar();
            this.moveBar = this.moveBar.bind(this);
            this.onXBarMouseDown = this.onXBarMouseDown.bind(this);
            this.onYBarMouseDown = this.onYBarMouseDown.bind(this);
            this.onDocumentMouseMove = this.onDocumentMouseMove.bind(this);
            this.onDocumentMouseUp = this.onDocumentMouseUp.bind(this);
            window.addEventListener('resize', this.moveBar);
            this.contentViewChild.nativeElement.addEventListener('scroll', this.moveBar);
            this.contentViewChild.nativeElement.addEventListener('mouseenter', this.moveBar);
            this.xBarViewChild.nativeElement.addEventListener('mousedown', this.onXBarMouseDown);
            this.yBarViewChild.nativeElement.addEventListener('mousedown', this.onYBarMouseDown);
            this.calculateContainerHeight();
            this.initialized = true;
        });
    }
    calculateContainerHeight() {
        let container = this.containerViewChild.nativeElement;
        let content = this.contentViewChild.nativeElement;
        let xBar = this.xBarViewChild.nativeElement;
        let containerStyles = getComputedStyle(container), xBarStyles = getComputedStyle(xBar), pureContainerHeight = DomHandler.getHeight(container) - parseInt(xBarStyles['height'], 10);
        if (containerStyles['max-height'] != "none" && pureContainerHeight == 0) {
            if (content.offsetHeight + parseInt(xBarStyles['height'], 10) > parseInt(containerStyles['max-height'], 10)) {
                container.style.height = containerStyles['max-height'];
            }
            else {
                container.style.height = content.offsetHeight + parseFloat(containerStyles.paddingTop) + parseFloat(containerStyles.paddingBottom) + parseFloat(containerStyles.borderTopWidth) + parseFloat(containerStyles.borderBottomWidth) + "px";
            }
        }
    }
    moveBar() {
        let container = this.containerViewChild.nativeElement;
        let content = this.contentViewChild.nativeElement;
        /* horizontal scroll */
        let xBar = this.xBarViewChild.nativeElement;
        let totalWidth = content.scrollWidth;
        let ownWidth = content.clientWidth;
        let bottom = (container.clientHeight - xBar.clientHeight) * -1;
        this.scrollXRatio = ownWidth / totalWidth;
        /* vertical scroll */
        let yBar = this.yBarViewChild.nativeElement;
        let totalHeight = content.scrollHeight;
        let ownHeight = content.clientHeight;
        let right = (container.clientWidth - yBar.clientWidth) * -1;
        this.scrollYRatio = ownHeight / totalHeight;
        this.requestAnimationFrame(() => {
            if (this.scrollXRatio >= 1) {
                DomHandler.addClass(xBar, 'ui-scrollpanel-hidden');
            }
            else {
                DomHandler.removeClass(xBar, 'ui-scrollpanel-hidden');
                const xBarWidth = Math.max(this.scrollXRatio * 100, 10);
                const xBarLeft = content.scrollLeft * (100 - xBarWidth) / (totalWidth - ownWidth);
                xBar.style.cssText = 'width:' + xBarWidth + '%; left:' + xBarLeft + '%;bottom:' + bottom + 'px;';
            }
            if (this.scrollYRatio >= 1) {
                DomHandler.addClass(yBar, 'ui-scrollpanel-hidden');
            }
            else {
                DomHandler.removeClass(yBar, 'ui-scrollpanel-hidden');
                const yBarHeight = Math.max(this.scrollYRatio * 100, 10);
                const yBarTop = content.scrollTop * (100 - yBarHeight) / (totalHeight - ownHeight);
                yBar.style.cssText = 'height:' + yBarHeight + '%; top: calc(' + yBarTop + '% - ' + xBar.clientHeight + 'px);right:' + right + 'px;';
            }
        });
    }
    onYBarMouseDown(e) {
        this.isYBarClicked = true;
        this.lastPageY = e.pageY;
        DomHandler.addClass(this.yBarViewChild.nativeElement, 'ui-scrollpanel-grabbed');
        DomHandler.addClass(document.body, 'ui-scrollpanel-grabbed');
        document.addEventListener('mousemove', this.onDocumentMouseMove);
        document.addEventListener('mouseup', this.onDocumentMouseUp);
        e.preventDefault();
    }
    onXBarMouseDown(e) {
        this.isXBarClicked = true;
        this.lastPageX = e.pageX;
        DomHandler.addClass(this.xBarViewChild.nativeElement, 'ui-scrollpanel-grabbed');
        DomHandler.addClass(document.body, 'ui-scrollpanel-grabbed');
        document.addEventListener('mousemove', this.onDocumentMouseMove);
        document.addEventListener('mouseup', this.onDocumentMouseUp);
        e.preventDefault();
    }
    onDocumentMouseMove(e) {
        if (this.isXBarClicked) {
            this.onMouseMoveForXBar(e);
        }
        else if (this.isYBarClicked) {
            this.onMouseMoveForYBar(e);
        }
        else {
            this.onMouseMoveForXBar(e);
            this.onMouseMoveForYBar(e);
        }
    }
    onMouseMoveForXBar(e) {
        let deltaX = e.pageX - this.lastPageX;
        this.lastPageX = e.pageX;
        this.requestAnimationFrame(() => {
            this.contentViewChild.nativeElement.scrollLeft += deltaX / this.scrollXRatio;
        });
    }
    onMouseMoveForYBar(e) {
        let deltaY = e.pageY - this.lastPageY;
        this.lastPageY = e.pageY;
        this.requestAnimationFrame(() => {
            this.contentViewChild.nativeElement.scrollTop += deltaY / this.scrollYRatio;
        });
    }
    scrollTop(scrollTop) {
        let scrollableHeight = this.contentViewChild.nativeElement.scrollHeight - this.contentViewChild.nativeElement.clientHeight;
        scrollTop = scrollTop > scrollableHeight ? scrollableHeight : scrollTop > 0 ? scrollTop : 0;
        this.contentViewChild.nativeElement.scrollTop = scrollTop;
    }
    onDocumentMouseUp(e) {
        DomHandler.removeClass(this.yBarViewChild.nativeElement, 'ui-scrollpanel-grabbed');
        DomHandler.removeClass(this.xBarViewChild.nativeElement, 'ui-scrollpanel-grabbed');
        DomHandler.removeClass(document.body, 'ui-scrollpanel-grabbed');
        document.removeEventListener('mousemove', this.onDocumentMouseMove);
        document.removeEventListener('mouseup', this.onDocumentMouseUp);
        this.isXBarClicked = false;
        this.isYBarClicked = false;
    }
    requestAnimationFrame(f) {
        let frame = window.requestAnimationFrame || this.timeoutFrame;
        frame(f);
    }
    ngOnDestroy() {
        if (this.initialized) {
            window.removeEventListener('resize', this.moveBar);
            this.contentViewChild.nativeElement.removeEventListener('scroll', this.moveBar);
            this.contentViewChild.nativeElement.removeEventListener('mouseenter', this.moveBar);
            this.xBarViewChild.nativeElement.removeEventListener('mousedown', this.onXBarMouseDown);
            this.yBarViewChild.nativeElement.removeEventListener('mousedown', this.onYBarMouseDown);
        }
    }
    refresh() {
        this.moveBar();
    }
};
ScrollPanel.ctorParameters = () => [
    { type: ElementRef },
    { type: NgZone }
];
__decorate([
    Input()
], ScrollPanel.prototype, "style", void 0);
__decorate([
    Input()
], ScrollPanel.prototype, "styleClass", void 0);
__decorate([
    ViewChild('container')
], ScrollPanel.prototype, "containerViewChild", void 0);
__decorate([
    ViewChild('content')
], ScrollPanel.prototype, "contentViewChild", void 0);
__decorate([
    ViewChild('xBar')
], ScrollPanel.prototype, "xBarViewChild", void 0);
__decorate([
    ViewChild('yBar')
], ScrollPanel.prototype, "yBarViewChild", void 0);
ScrollPanel = __decorate([
    Component({
        selector: 'p-scrollPanel',
        template: `
        <div #container [ngClass]="'ui-scrollpanel ui-widget ui-widget-content ui-corner-all'" [ngStyle]="style" [class]="styleClass">
            <div class="ui-scrollpanel-wrapper">
                <div #content class="ui-scrollpanel-content">
                    <ng-content></ng-content>
                </div>
            </div>
            <div #xBar class="ui-scrollpanel-bar ui-scrollpanel-bar-x"></div>
            <div #yBar class="ui-scrollpanel-bar ui-scrollpanel-bar-y"></div>   
        </div>
    `,
        changeDetection: ChangeDetectionStrategy.Default
    })
], ScrollPanel);
let ScrollPanelModule = class ScrollPanelModule {
};
ScrollPanelModule = __decorate([
    NgModule({
        imports: [CommonModule],
        exports: [ScrollPanel],
        declarations: [ScrollPanel]
    })
], ScrollPanelModule);

/**
 * Generated bundle index. Do not edit.
 */

export { ScrollPanel, ScrollPanelModule };
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