ngx-drag-and-drop/bundles/ngx-drag-and-drop.umd.js

Angular library that allow you to build drag and drop without the native HTML5 API

(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@angular/core'), require('@angular/common')) :
    typeof define === 'function' && define.amd ? define('ngx-drag-and-drop', ['exports', '@angular/core', '@angular/common'], factory) :
    (global = global || self, factory(global['ngx-drag-and-drop'] = {}, global.ng.core, global.ng.common));
}(this, (function (exports, core, common) { 'use strict';

    /*! *****************************************************************************
    Copyright (c) Microsoft Corporation. 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

    THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
    WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
    MERCHANTABLITY OR NON-INFRINGEMENT.

    See the Apache Version 2.0 License for specific language governing permissions
    and limitations under the License.
    ***************************************************************************** */
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    var myDoc = document;
    myDoc.elementsFromPoint = myDoc.elementsFromPoint || function (x, y) {
        var element;
        var old_visibility = [];
        var elements = [];
        while (true) {
            element = document.elementFromPoint(x, y);
            if (!element || element === document.documentElement) {
                break;
            }
            elements.push(element);
            old_visibility.push(element.style.visibility);
            element.style.visibility = 'hidden'; // Temporarily hide the element (without changing the layout)
        }
        for (var k = 0; k < elements.length; k++) {
            elements[k].style.visibility = old_visibility[k];
        }
        return elements;
    };

    /*
    interface ShadowRoot extends DocumentFragment {
        styleSheets     : StyleSheetList;
        innerHTML       : string;
        host            : Element;
        activeElement   : Element;
        elementFromPoint        (x : number, y : number) : Element;
        elementsFromPoint       (x : number, y : number) : Element[];
        caretPositionFromPoint  (x : number, y : number); // => CaretPosition
    };

    interface ElementWithShadowRoot extends HTMLElement {
        shadowRoot  : ShadowRoot;
    };*/
    var dragPointerId = 'dragPointer';
    var DragManager = /** @class */ (function () {
        function DragManager() {
            this.draggingPointer = new Map();
            this.draggedStructures = new Map();
            this.dropZones = new Map();
        }
        DragManager.prototype.preStartDrag = function (idPointer, x, y, delay, dist) {
            var _this = this;
            this.draggingPointer.set(idPointer, { x: x, y: y });
            return new Promise(function (resolve, reject) {
                setTimeout(function () {
                    var ptr = _this.draggingPointer.get(idPointer);
                    var gogo = ptr && (Math.abs(x - ptr.x) + Math.abs(y - ptr.y)) < dist;
                    _this.draggingPointer.delete(idPointer);
                    gogo ? resolve() : reject();
                }, Math.max(0, delay));
            });
        };
        DragManager.prototype.startDrag = function (idPointer, dragged) {
            this.draggedStructures.set(idPointer, dragged);
            var possibleDropZones = new Map();
            this.dropZones.forEach(function (dz) {
                if (dz.checkAccept(dragged)) {
                    dz.appendDropCandidatePointer(idPointer);
                    possibleDropZones.set(dz.root, dz);
                }
            });
            return possibleDropZones;
        };
        DragManager.prototype.isAssociatedToDropZone = function (element) {
            return this.dropZones.has(element);
        };
        DragManager.prototype.registerDropZone = function (dropzone) {
            this.dropZones.set(dropzone.root, dropzone);
        };
        DragManager.prototype.unregisterDropZone = function (dropzone) {
            this.dropZones.delete(dropzone.root);
        };
        DragManager.prototype.pointerMove = function (idPointer, x, y) {
            var ptr = this.draggingPointer.get(idPointer);
            if (ptr) {
                ptr.x = x;
                ptr.y = y;
            }
            var dragged = this.draggedStructures.get(idPointer);
            if (dragged && dragged instanceof Draggable) {
                dragged.move(x, y);
            }
            return dragged !== undefined;
        };
        DragManager.prototype.pointerRelease = function (idPointer) {
            var dragged = this.draggedStructures.get(idPointer);
            if (dragged) {
                if (dragged instanceof Draggable) {
                    dragged.stop();
                }
            }
            this.draggedStructures.delete(idPointer);
            this.draggingPointer.delete(idPointer);
            return dragged !== undefined;
        };
        return DragManager;
    }());
    var DM = new DragManager();
    var dragDropInit = false;
    var DragDrop = /** @class */ (function () {
        function DragDrop() {
            this.nbDragEnter = 0;
            if (dragDropInit) {
                console.error('Do not create multiple instance of directive drag-and-drop-wrapper !');
            }
            else {
                dragDropInit = true;
            }
        }
        DragDrop.prototype.removeFeedbackForDragPointer = function () {
            this.nbDragEnter = 0;
            DM.dropZones.forEach(function (dz) {
                dz.removePointerHover(dragPointerId);
                dz.removeDropCandidatePointer(dragPointerId);
            });
        };
        DragDrop.prototype.drop = function (e) {
            e.preventDefault();
            e.stopPropagation();
            this.removeFeedbackForDragPointer();
        };
        DragDrop.prototype.dragover = function (e) {
            e.preventDefault();
            e.stopPropagation();
        };
        DragDrop.prototype.dragenter = function (e) {
            this.nbDragEnter++;
            if (this.nbDragEnter === 1) {
                DM.startDrag(dragPointerId, e);
            }
        };
        DragDrop.prototype.dragleave = function (e) {
            this.nbDragEnter--;
            if (this.nbDragEnter === 0) {
                this.removeFeedbackForDragPointer();
                DM.pointerRelease(dragPointerId);
            }
        };
        DragDrop.prototype.dragend = function (e) {
            DM.pointerRelease(dragPointerId);
            this.removeFeedbackForDragPointer();
            e.preventDefault();
        };
        DragDrop.prototype.mousemove = function (e) {
            DM.pointerMove('mouse', e.clientX, e.clientY);
        };
        DragDrop.prototype.mouseup = function (e) {
            DM.pointerRelease('mouse');
        };
        DragDrop.prototype.touchmove = function (e) {
            for (var i = 0; i < e.changedTouches.length; i++) {
                var touch = e.changedTouches.item(i);
                if (DM.pointerMove(touch.identifier.toString(), touch.clientX, touch.clientY)) {
                    e.preventDefault();
                    e.stopPropagation();
                }
            }
        };
        DragDrop.prototype.touchend = function (e) {
            for (var i = 0; i < e.changedTouches.length; i++) {
                var touch = e.changedTouches.item(i);
                if (DM.pointerRelease(touch.identifier.toString())) {
                    e.preventDefault();
                    e.stopPropagation();
                }
            }
        };
        __decorate([
            core.HostListener('document: drop', ['$event'])
        ], DragDrop.prototype, "drop", null);
        __decorate([
            core.HostListener('document: dragover', ['$event'])
        ], DragDrop.prototype, "dragover", null);
        __decorate([
            core.HostListener('document: dragenter', ['$event'])
        ], DragDrop.prototype, "dragenter", null);
        __decorate([
            core.HostListener('document: dragleave', ['$event'])
        ], DragDrop.prototype, "dragleave", null);
        __decorate([
            core.HostListener('document: dragend', ['$event'])
        ], DragDrop.prototype, "dragend", null);
        __decorate([
            core.HostListener('document: mousemove', ['$event'])
        ], DragDrop.prototype, "mousemove", null);
        __decorate([
            core.HostListener('document: mouseup', ['$event'])
        ], DragDrop.prototype, "mouseup", null);
        __decorate([
            core.HostListener('document: touchmove', ['$event'])
        ], DragDrop.prototype, "touchmove", null);
        __decorate([
            core.HostListener('document: touchend', ['$event'])
        ], DragDrop.prototype, "touchend", null);
        DragDrop = __decorate([
            core.Directive({
                selector: '*[drag-and-drop-wrapper]'
            })
        ], DragDrop);
        return DragDrop;
    }());
    var offsetElement = function (element) {
        var left = 0, top = 0;
        while (element) {
            top += element.offsetTop - element.scrollTop + element.clientTop;
            left += element.offsetLeft - element.scrollLeft + element.clientLeft;
            element = element.offsetParent;
        }
        return { left: left, top: top };
    };
    var ɵ0 = offsetElement;
    var Draggable = /** @class */ (function () {
        function Draggable(el) {
            this.disabled = false;
            this.onDragStart = new core.EventEmitter();
            this.onDragEnd = new core.EventEmitter();
            this.isBeingDragged = false;
            this.cloneNode = null;
            this.possibleDropZones = new Map();
            this.root = el.nativeElement;
            if (!dragDropInit) {
                console.error('You should add one dragdrop attribute to your code before using draggable');
            }
        }
        Draggable.prototype.ngOnInit = function () {
            //
        };
        Draggable.prototype.ngOnDestroy = function () {
            // XXX No stop in case of unplug while dragging... : // this.stop();
        };
        Draggable.prototype.onMouseDown = function (event) {
            if (!this.disabled) {
                event.preventDefault();
                event.stopPropagation();
                this.prestart('mouse', event.clientX, event.clientY);
            }
        };
        Draggable.prototype.onTouchStart = function (event) {
            event.stopPropagation();
            for (var i = 0; i < event.changedTouches.length; i++) {
                var touch = event.changedTouches.item(i);
                this.prestart(touch.identifier.toString(), touch.clientX, touch.clientY);
            }
        };
        Draggable.prototype.prestart = function (idPointer, x, y) {
            var _this = this;
            DM.preStartDrag(idPointer, x, y, this.startDelay || 0, this.startDistance || 10).then(function () {
                _this.start(idPointer, x, y);
            }, function () {
                // console.error('skip the drag');
            });
        };
        Draggable.prototype.start = function (idPointer, x, y) {
            if (!this.isBeingDragged) {
                this.isBeingDragged = true;
                this.idPointer = idPointer;
                var offset = offsetElement(this.root);
                this.ox = x;
                this.oy = y;
                this.dx = x - offset.left;
                this.dy = y - offset.top;
                this.tx = this.root.offsetWidth;
                this.ty = this.root.offsetHeight;
                this.getClone();
                this.cloneNode.style.left = (x - this.dx) + 'px';
                this.cloneNode.style.top = (y - this.dy) + 'px';
                this.onDragStart.emit(this.draggedData);
                this.possibleDropZones = DM.startDrag(idPointer, this);
            }
        };
        Draggable.prototype.stop = function () {
            var _this = this;
            this.possibleDropZones.forEach(function (dz) {
                dz.removePointerHover(_this.idPointer);
                dz.removeDropCandidatePointer(_this.idPointer);
            });
            this.isBeingDragged = false;
            this.possibleDropZones.clear();
            this.idPointer = null;
            if (this.currentDropZone) {
                this.currentDropZone.drop(this.draggedData);
            }
            this.currentDropZone = null;
            this.onDragEnd.emit(this.draggedData);
            this.deleteClone();
        };
        Draggable.prototype.move = function (x, y) {
            var element = null;
            if (this.cloneNode === null) {
                this.getClone();
            }
            if (this.cloneNode) {
                this.cloneNode.style.left = (x - this.dx) + 'px';
                this.cloneNode.style.top = (y - this.dy) + 'px';
                var visibility = this.cloneNode.style.visibility;
                this.cloneNode.style.visibility = 'hidden';
                var top_1 = this.cloneNode.style.top;
                this.cloneNode.style.top = '999999999px';
                element = myDoc.elementFromPoint(x, y);
                this.cloneNode.style.top = top_1;
                this.cloneNode.style.visibility = visibility;
                var prevDropZone = this.currentDropZone;
                while (element) {
                    this.currentDropZone = this.possibleDropZones.get(element);
                    if (this.currentDropZone) {
                        break;
                    }
                    element = element.parentElement;
                }
                if (prevDropZone !== this.currentDropZone) {
                    if (prevDropZone) {
                        prevDropZone.removePointerHover(this.idPointer);
                    }
                    if (this.currentDropZone) {
                        this.currentDropZone.appendPointerHover(this.idPointer);
                    }
                }
            }
            return this;
        };
        Draggable.prototype.deepStyle = function (original, clone) {
            if (original instanceof HTMLElement) {
                var style = window.getComputedStyle(original);
                for (var i = 0; i < style.length; i++) {
                    var att = style[i];
                    clone.style[att] = style[att];
                }
                for (var i = 0; i < original.children.length; i++) {
                    this.deepStyle(original.children.item(i), clone.children.item(i));
                }
            }
        };
        Draggable.prototype.deleteClone = function () {
            if (this.cloneNode) {
                if (this.cloneNode.parentNode) {
                    this.cloneNode.parentNode.removeChild(this.cloneNode);
                }
                this.cloneNode = null;
            }
        };
        Draggable.prototype.getClone = function () {
            if (this.cloneNode === null) {
                this.cloneNode = this.root.cloneNode(true);
                this.deepStyle(this.root, this.cloneNode);
                document.body.appendChild(this.cloneNode);
                this.cloneNode.style.position = 'absolute';
                this.cloneNode.style.zIndex = '999';
                this.cloneNode.style.marginLeft = '0';
                this.cloneNode.style.marginTop = '0';
                this.cloneNode.style.marginRight = '0';
                this.cloneNode.style.marginBottom = '0';
                this.cloneNode.style.opacity = '';
                this.cloneNode.style.cursor = '';
                this.cloneNode.style.transform = '';
                this.cloneNode.style.transformOrigin = '';
                this.cloneNode.style.animation = '';
                this.cloneNode.style.transition = '';
                this.cloneNode.classList.add('drag-and-drop-clone-node');
            }
            return this.cloneNode;
        };
        Draggable.ctorParameters = function () { return [
            { type: core.ElementRef }
        ]; };
        __decorate([
            core.Input('draggable')
        ], Draggable.prototype, "draggedData", void 0);
        __decorate([
            core.Input('drag-start-delay')
        ], Draggable.prototype, "startDelay", void 0);
        __decorate([
            core.Input('start-distance')
        ], Draggable.prototype, "startDistance", void 0);
        __decorate([
            core.Input('disabled')
        ], Draggable.prototype, "disabled", void 0);
        __decorate([
            core.Output('drag-start')
        ], Draggable.prototype, "onDragStart", void 0);
        __decorate([
            core.Output('drag-end')
        ], Draggable.prototype, "onDragEnd", void 0);
        __decorate([
            core.HostListener('mousedown', ['$event'])
        ], Draggable.prototype, "onMouseDown", null);
        __decorate([
            core.HostListener('touchstart', ['$event'])
        ], Draggable.prototype, "onTouchStart", null);
        Draggable = __decorate([
            core.Directive({
                selector: '*[draggable]'
            })
        ], Draggable);
        return Draggable;
    }());
    var Dropzone = /** @class */ (function () {
        function Dropzone(el) {
            this.nbDragEnter = 0;
            this.onDropEmitter = new core.EventEmitter();
            this.onDragStart = new core.EventEmitter();
            this.onDragEnd = new core.EventEmitter();
            this.onDragEnter = new core.EventEmitter();
            this.onDragLeave = new core.EventEmitter();
            this.dropCandidateofPointers = [];
            this.pointersHover = [];
            if (!dragDropInit) {
                console.error('You should add one dragdrop attribute to your code before using dropzone');
            }
            this.root = el.nativeElement;
            DM.registerDropZone(this);
        }
        Dropzone.prototype.ngOnInit = function () {
            //
        };
        Dropzone.prototype.ngOnDestroy = function () {
            DM.unregisterDropZone(this);
        };
        Dropzone.prototype.BrowserDragEnter = function (event) {
            this.nbDragEnter++;
            if (this.nbDragEnter === 1) {
                this.appendPointerHover(dragPointerId);
            }
        };
        Dropzone.prototype.BrowserDragLeave = function (event) {
            this.nbDragEnter--;
            if (this.nbDragEnter === 0) {
                this.removePointerHover(dragPointerId);
            }
        };
        Dropzone.prototype.BrowserDrop = function (event) {
            DM.pointerRelease(dragPointerId);
            this.nbDragEnter = 0;
            this.onDropEmitter.emit(event);
        };
        Dropzone.prototype.drop = function (obj) {
            this.onDropEmitter.emit(obj);
        };
        Dropzone.prototype.checkAccept = function (drag) {
            var res;
            if (drag instanceof Draggable) {
                res = this.acceptFunction ? this.acceptFunction(drag.draggedData) : true;
            }
            else {
                res = this.acceptFunction ? this.acceptFunction(drag) : true;
            }
            return res;
        };
        Dropzone.prototype.hasPointerHover = function (idPointer) {
            return this.pointersHover.indexOf(idPointer) >= 0;
        };
        Dropzone.prototype.appendPointerHover = function (idPointer) {
            if (this.pointersHover.indexOf(idPointer) === -1) {
                var dragged = DM.draggedStructures.get(idPointer);
                this.pointersHover.push(idPointer);
                if (dragged instanceof Draggable) {
                    if (this.dragOverCSS_pointer) {
                        dragged.getClone().classList.add(this.dragOverCSS_pointer);
                    }
                    this.onDragEnter.emit(dragged.draggedData);
                }
                else {
                    this.onDragEnter.emit(dragged);
                }
                if (this.dragOverCSS) {
                    this.root.classList.add(this.dragOverCSS);
                }
            }
        };
        Dropzone.prototype.removePointerHover = function (idPointer) {
            var pos = this.pointersHover.indexOf(idPointer);
            if (pos >= 0) {
                var dragged = DM.draggedStructures.get(idPointer);
                this.pointersHover.splice(pos, 1);
                if (dragged instanceof Draggable) {
                    if (this.dragOverCSS_pointer) {
                        dragged.getClone().classList.remove(this.dragOverCSS_pointer);
                    }
                    this.onDragLeave.emit(dragged.draggedData);
                }
                else {
                    this.onDragLeave.emit(dragged);
                }
                if (this.pointersHover.length === 0 && this.dragOverCSS) {
                    this.root.classList.remove(this.dragOverCSS);
                }
            }
        };
        Dropzone.prototype.appendDropCandidatePointer = function (idPointer) {
            if (this.dropCandidateofPointers.indexOf(idPointer) === -1) {
                var dragged = DM.draggedStructures.get(idPointer);
                if (dragged instanceof Draggable) {
                    this.onDragStart.emit(dragged.draggedData);
                }
                else {
                    this.onDragStart.emit(dragged);
                }
                this.dropCandidateofPointers.push(idPointer);
                if (this.dragCSS) {
                    this.root.classList.add(this.dragCSS);
                }
            }
        };
        Dropzone.prototype.removeDropCandidatePointer = function (idPointer) {
            var pos = this.dropCandidateofPointers.indexOf(idPointer);
            if (pos >= 0) {
                var dragged = DM.draggedStructures.get(idPointer);
                if (dragged instanceof Draggable) {
                    this.onDragEnd.emit(dragged.draggedData);
                }
                else {
                    this.onDragEnd.emit(dragged);
                }
                this.dropCandidateofPointers.splice(pos, 1);
                if (this.dropCandidateofPointers.length === 0 && this.dragCSS) {
                    this.root.classList.remove(this.dragCSS);
                }
            }
        };
        Dropzone.ctorParameters = function () { return [
            { type: core.ElementRef }
        ]; };
        __decorate([
            core.Input('drag-css')
        ], Dropzone.prototype, "dragCSS", void 0);
        __decorate([
            core.Input('drag-over-css')
        ], Dropzone.prototype, "dragOverCSS", void 0);
        __decorate([
            core.Input('drag-over-css-for-draggable')
        ], Dropzone.prototype, "dragOverCSS_pointer", void 0);
        __decorate([
            core.Input('accept-function')
        ], Dropzone.prototype, "acceptFunction", void 0);
        __decorate([
            core.Output('ondrop')
        ], Dropzone.prototype, "onDropEmitter", void 0);
        __decorate([
            core.Output('drag-start')
        ], Dropzone.prototype, "onDragStart", void 0);
        __decorate([
            core.Output('drag-end')
        ], Dropzone.prototype, "onDragEnd", void 0);
        __decorate([
            core.Output('drag-enter')
        ], Dropzone.prototype, "onDragEnter", void 0);
        __decorate([
            core.Output('drag-leave')
        ], Dropzone.prototype, "onDragLeave", void 0);
        __decorate([
            core.HostListener('dragenter', ['$event'])
        ], Dropzone.prototype, "BrowserDragEnter", null);
        __decorate([
            core.HostListener('dragleave', ['$event'])
        ], Dropzone.prototype, "BrowserDragLeave", null);
        __decorate([
            core.HostListener('drop', ['$event'])
        ], Dropzone.prototype, "BrowserDrop", null);
        Dropzone = __decorate([
            core.Directive({ selector: '*[dropzone]' })
        ], Dropzone);
        return Dropzone;
    }());

    var NgxDragAndDropModule = /** @class */ (function () {
        function NgxDragAndDropModule() {
        }
        NgxDragAndDropModule_1 = NgxDragAndDropModule;
        NgxDragAndDropModule.forRoot = function () {
            return {
                ngModule: NgxDragAndDropModule_1,
                providers: []
            };
        };
        var NgxDragAndDropModule_1;
        NgxDragAndDropModule = NgxDragAndDropModule_1 = __decorate([
            core.NgModule({
                imports: [
                    common.CommonModule,
                ],
                declarations: [
                    Draggable,
                    Dropzone,
                    DragDrop,
                ],
                exports: [
                    Draggable,
                    Dropzone,
                    DragDrop,
                ]
            })
        ], NgxDragAndDropModule);
        return NgxDragAndDropModule;
    }());

    exports.NgxDragAndDropModule = NgxDragAndDropModule;
    exports.ɵa = DragDrop;
    exports.ɵb = Draggable;
    exports.ɵc = Dropzone;

    Object.defineProperty(exports, '__esModule', { value: true });

})));
//# sourceMappingURL=ngx-drag-and-drop.umd.js.map