ng2-dnd
Version:
Angular 2 Drag-and-Drop without dependencies
176 lines • 7.71 kB
JavaScript
// Copyright (C) 2016 Sergey Akopkokhyants
// This project is licensed under the terms of the MIT license.
// https://github.com/akserg/ng2-dnd
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;
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var core_1 = require('angular2/core');
var core_2 = require('angular2/core');
var dnd_config_1 = require('./dnd.config');
var dnd_service_1 = require('./dnd.service');
var AbstractComponent = (function () {
function AbstractComponent(elemRef, _dragDropService, _config) {
var _this = this;
this._dragDropService = _dragDropService;
this._config = _config;
/**
* Whether the object is draggable. Default is true.
*/
this._dragEnabled = false;
this.dropEnabled = false;
/**
* Array of Strings. It permits to specify the drop zones associated with this component.
* By default, if the drop-zones attribute is not specified, the droppable component accepts
* drop operations by all the draggable components that do not specify the allowed-drop-zones
*/
this.dropZones = [];
this._elem = elemRef.nativeElement;
this.dragEnabled = true;
//drop events
this._elem.ondragenter = function (event) {
_this._onDragEnter(event);
};
this._elem.ondragover = function (event) {
_this._onDragOver(event);
//
if (event.dataTransfer != null) {
event.dataTransfer.dropEffect = _this._config.dropEffect.name;
}
};
this._elem.ondragleave = function (event) {
_this._onDragLeave(event);
};
// this._elem.ontouchenter = (event: Event) => {
// this._onDragEnter(event);
// };
// this._elem.ontouchleave = (event: Event) => {
// this._onDragLeave(event);
// };
this._elem.ondrop = function (event) {
_this._onDrop(event);
};
//drag events
this._elem.ondragstart = function (event) {
// console.log('ondragstart', event.target);
_this._onDragStart(event);
//
if (event.dataTransfer != null) {
event.dataTransfer.effectAllowed = _this._config.dragEffect.name;
event.dataTransfer.setData('text/html', '');
if (_this._config.dragImage != null) {
var dragImage = _this._config.dragImage;
event.dataTransfer.setDragImage(dragImage.imageElement, dragImage.x_offset, dragImage.y_offset);
}
}
};
this._elem.ondragend = function (event) {
// console.log('ondragend', event.target);
_this._onDragEnd(event);
};
this._elem.ontouchstart = function (event) {
// console.log('ontouchstart', event.target);
_this._onDragStart(event);
};
this._elem.ontouchend = function (event) {
// console.log('ontouchend', event.target);
_this._onDragEnd(event);
};
}
Object.defineProperty(AbstractComponent.prototype, "dragEnabled", {
get: function () {
return this._dragEnabled;
},
set: function (enabled) {
this._dragEnabled = !!enabled;
//
this._elem.draggable = this._dragEnabled;
if (this._config.dragCursor != null) {
this._elem.style.cursor = this._dragEnabled ? this._config.dragCursor : this._defaultCursor;
}
},
enumerable: true,
configurable: true
});
//****** Droppable *******//
AbstractComponent.prototype._onDragEnter = function (event) {
// console.log('ondragenter._isDropAllowed', this._isDropAllowed);
if (this._isDropAllowed) {
event.preventDefault();
this._onDragEnterCallback(event);
}
};
AbstractComponent.prototype._onDragOver = function (event) {
// // console.log('ondragover._isDropAllowed', this._isDropAllowed);
if (this._isDropAllowed) {
event.preventDefault();
this._onDragOverCallback(event);
}
};
AbstractComponent.prototype._onDragLeave = function (event) {
// console.log('ondragleave._isDropAllowed', this._isDropAllowed);
if (this._isDropAllowed) {
event.preventDefault();
this._onDragLeaveCallback(event);
}
};
AbstractComponent.prototype._onDrop = function (event) {
// console.log('ondrop._isDropAllowed', this._isDropAllowed);
if (this._isDropAllowed) {
event.preventDefault();
this._onDropCallback(event);
}
};
Object.defineProperty(AbstractComponent.prototype, "_isDropAllowed", {
get: function () {
if (this.dropEnabled) {
if (this.dropZones.length === 0 && this._dragDropService.allowedDropZones.length === 0) {
return true;
}
for (var i = 0; i < this._dragDropService.allowedDropZones.length; i++) {
var dragZone = this._dragDropService.allowedDropZones[i];
if (this.dropZones.indexOf(dragZone) !== -1) {
return true;
}
}
}
return false;
},
enumerable: true,
configurable: true
});
//*********** Draggable **********//
AbstractComponent.prototype._onDragStart = function (event) {
// console.log('ondragstart.dragEnabled', this._dragEnabled);
if (this._dragEnabled) {
this._dragDropService.allowedDropZones = this.dropZones;
// console.log('ondragstart.allowedDropZones', this._dragDropService.allowedDropZones);
this._onDragStartCallback(event);
}
};
AbstractComponent.prototype._onDragEnd = function (event) {
this._dragDropService.allowedDropZones = [];
// console.log('ondragend.allowedDropZones', this._dragDropService.allowedDropZones);
this._onDragEndCallback(event);
};
//**** Drop Callbacks ****//
AbstractComponent.prototype._onDragEnterCallback = function (event) { };
AbstractComponent.prototype._onDragOverCallback = function (event) { };
AbstractComponent.prototype._onDragLeaveCallback = function (event) { };
AbstractComponent.prototype._onDropCallback = function (event) { };
//**** Drag Callbacks ****//
AbstractComponent.prototype._onDragStartCallback = function (event) { };
AbstractComponent.prototype._onDragEndCallback = function (event) { };
AbstractComponent = __decorate([
core_1.Injectable(),
__metadata('design:paramtypes', [core_2.ElementRef, dnd_service_1.DragDropService, dnd_config_1.DragDropConfig])
], AbstractComponent);
return AbstractComponent;
})();
exports.AbstractComponent = AbstractComponent;
//# sourceMappingURL=dnd.component.js.map