@supermemo/ng2-dragula
Version:
Simple drag and drop with dragula
257 lines (256 loc) • 29.6 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes} checked by tsc
*/
import { Injectable, Optional } from '@angular/core';
import { Group } from '../Group';
import { Subject } from 'rxjs';
import { filter, map } from 'rxjs/operators';
import { EventTypes, AllEvents } from '../EventTypes';
import { DrakeFactory } from '../DrakeFactory';
/** @type {?} */
const filterEvent = (eventType, filterDragType, projector) => (input) => {
return input.pipe(filter(({ event, name }) => {
return event === eventType
&& (filterDragType === undefined || name === filterDragType);
}), map(({ name, args }) => projector(name, args)));
};
const ɵ0 = filterEvent;
/** @type {?} */
const elContainerSourceProjector = (name, [el, container, source]) => ({ name, el, container, source });
const ɵ1 = elContainerSourceProjector;
export class DragulaService {
/**
* @param {?=} drakeFactory
*/
constructor(drakeFactory = null) {
this.drakeFactory = drakeFactory;
this.dispatch$ = new Subject();
this.drag = (groupName) => this.dispatch$.pipe(filterEvent(EventTypes.Drag, groupName, (name, [el, source]) => ({ name, el, source })));
this.dragend = (groupName) => this.dispatch$.pipe(filterEvent(EventTypes.DragEnd, groupName, (name, [el]) => ({ name, el })));
this.drop = (groupName) => this.dispatch$.pipe(filterEvent(EventTypes.Drop, groupName, (name, [el, target, source, sibling]) => {
return { name, el, target, source, sibling };
}));
this.elContainerSource = (eventType) => (groupName) => this.dispatch$.pipe(filterEvent(eventType, groupName, elContainerSourceProjector));
this.cancel = this.elContainerSource(EventTypes.Cancel);
this.remove = this.elContainerSource(EventTypes.Remove);
this.shadow = this.elContainerSource(EventTypes.Shadow);
this.over = this.elContainerSource(EventTypes.Over);
this.out = this.elContainerSource(EventTypes.Out);
this.cloned = (groupName) => this.dispatch$.pipe(filterEvent(EventTypes.Cloned, groupName, (name, [clone, original, cloneType]) => {
return { name, clone, original, cloneType };
}));
this.dropModel = (groupName) => this.dispatch$.pipe(filterEvent(EventTypes.DropModel, groupName, (name, [el, target, source, sibling, item, sourceModel, targetModel, sourceIndex, targetIndex]) => {
return { name, el, target, source, sibling, item, sourceModel, targetModel, sourceIndex, targetIndex };
}));
this.removeModel = (groupName) => this.dispatch$.pipe(filterEvent(EventTypes.RemoveModel, groupName, (name, [el, container, source, item, sourceModel, sourceIndex]) => {
return { name, el, container, source, item, sourceModel, sourceIndex };
}));
this.groups = {};
if (this.drakeFactory === null) {
this.drakeFactory = new DrakeFactory();
}
}
/**
* Public mainly for testing purposes. Prefer `createGroup()`.
* @param {?} group
* @return {?}
*/
add(group) {
/** @type {?} */
let existingGroup = this.find(group.name);
if (existingGroup) {
throw new Error('Group named: "' + group.name + '" already exists.');
}
this.groups[group.name] = group;
this.handleModels(group);
this.setupEvents(group);
return group;
}
/**
* @param {?} name
* @return {?}
*/
find(name) {
return this.groups[name];
}
/**
* @param {?} name
* @return {?}
*/
destroy(name) {
/** @type {?} */
let group = this.find(name);
if (!group) {
return;
}
group.drake && group.drake.destroy();
delete this.groups[name];
}
/**
* Creates a group with the specified name and options.
*
* Note: formerly known as `setOptions`
* @template T
* @param {?} name
* @param {?} options
* @return {?}
*/
createGroup(name, options) {
return this.add(new Group(name, this.drakeFactory.build([], options), options));
}
/**
* @param {?} __0
* @return {?}
*/
handleModels({ name, drake, options }) {
/** @type {?} */
let dragElm;
/** @type {?} */
let dragIndex;
/** @type {?} */
let dropIndex;
drake.on('remove', (el, container, source) => {
if (!drake.models) {
return;
}
/** @type {?} */
let sourceModel = drake.models[drake.containers.indexOf(source)];
sourceModel = sourceModel.slice(0);
/** @type {?} */
const item = sourceModel.splice(dragIndex, 1)[0];
// console.log('REMOVE');
// console.log(sourceModel);
this.dispatch$.next({
event: EventTypes.RemoveModel,
name,
args: [el, container, source, item, sourceModel, dragIndex]
});
});
drake.on('drag', (el, source) => {
if (!drake.models) {
return;
}
dragElm = el;
dragIndex = this.domIndexOf(el, source);
});
drake.on('drop', (dropElm, target, source, sibling) => {
if (!drake.models || !target) {
return;
}
dropIndex = this.domIndexOf(dropElm, target);
/** @type {?} */
let sourceModel = drake.models[drake.containers.indexOf(source)];
/** @type {?} */
let targetModel = drake.models[drake.containers.indexOf(target)];
/** @type {?} */
let item;
if (target === source) {
sourceModel = sourceModel.slice(0);
item = sourceModel.splice(dragIndex, 1)[0];
sourceModel.splice(dropIndex, 0, item);
// this was true before we cloned and updated sourceModel,
// but targetModel still has the old value
targetModel = sourceModel;
}
else {
/** @type {?} */
let isCopying = dragElm !== dropElm;
item = sourceModel[dragIndex];
if (isCopying) {
if (!options.copyItem) {
throw new Error("If you have enabled `copy` on a group, you must provide a `copyItem` function.");
}
item = options.copyItem(item);
}
if (!isCopying) {
sourceModel = sourceModel.slice(0);
sourceModel.splice(dragIndex, 1);
}
targetModel = targetModel.slice(0);
targetModel.splice(dropIndex, 0, item);
if (isCopying) {
try {
target.removeChild(dropElm);
}
catch (e) { }
}
}
this.dispatch$.next({
event: EventTypes.DropModel,
name,
args: [dropElm, target, source, sibling, item, sourceModel, targetModel, dragIndex, dropIndex]
});
});
}
/**
* @param {?} group
* @return {?}
*/
setupEvents(group) {
if (group.initEvents) {
return;
}
group.initEvents = true;
/** @type {?} */
const name = group.name;
/** @type {?} */
let that = this;
/** @type {?} */
let emitter = (event) => {
group.drake.on(event, (...args) => {
this.dispatch$.next({ event, name, args });
});
};
AllEvents.forEach(emitter);
}
/**
* @param {?} child
* @param {?} parent
* @return {?}
*/
domIndexOf(child, parent) {
return Array.prototype.indexOf.call(parent.children, child);
}
}
DragulaService.decorators = [
{ type: Injectable }
];
/** @nocollapse */
DragulaService.ctorParameters = () => [
{ type: DrakeFactory, decorators: [{ type: Optional }] }
];
function DragulaService_tsickle_Closure_declarations() {
/** @type {?} */
DragulaService.prototype.dispatch$;
/** @type {?} */
DragulaService.prototype.drag;
/** @type {?} */
DragulaService.prototype.dragend;
/** @type {?} */
DragulaService.prototype.drop;
/** @type {?} */
DragulaService.prototype.elContainerSource;
/** @type {?} */
DragulaService.prototype.cancel;
/** @type {?} */
DragulaService.prototype.remove;
/** @type {?} */
DragulaService.prototype.shadow;
/** @type {?} */
DragulaService.prototype.over;
/** @type {?} */
DragulaService.prototype.out;
/** @type {?} */
DragulaService.prototype.cloned;
/** @type {?} */
DragulaService.prototype.dropModel;
/** @type {?} */
DragulaService.prototype.removeModel;
/** @type {?} */
DragulaService.prototype.groups;
/** @type {?} */
DragulaService.prototype.drakeFactory;
}
export { ɵ0, ɵ1 };
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{ Injectable, Optional } from '@angular/core';\nimport { Group } from '../Group';\nimport { DragulaOptions } from '../DragulaOptions';\nimport { Subject, Observable } from 'rxjs';\nimport { filter, map } from 'rxjs/operators';\nimport { EventTypes, AllEvents } from '../EventTypes';\nimport { DrakeFactory } from '../DrakeFactory';\n\ntype FilterProjector<T extends { name: string; }> = (name: string, args: any[]) => T;\ntype Dispatch = { event: EventTypes; name: string; args: any[]; };\n\nconst filterEvent = <T extends { name: string; }>(\n  eventType: EventTypes,\n  filterDragType: string | undefined,\n  projector: FilterProjector<T>\n) => (input: Observable<Dispatch>): Observable<T> => {\n  return input.pipe(\n    filter(({ event, name }) => {\n      return event === eventType\n          && (filterDragType === undefined || name === filterDragType);\n    }),\n    map(({ name, args }) => projector(name, args))\n  );\n}\n\nconst elContainerSourceProjector =\n  (name: string, [el, container, source]: [Element, Element, Element]) =>\n    ({ name, el, container, source });\n\n@Injectable()\nexport class DragulaService {\n\n  /* https://github.com/bevacqua/dragula#drakeon-events */\n\n  private dispatch$ = new Subject<Dispatch>();\n\n  public drag = (groupName?: string) => this.dispatch$.pipe(\n    filterEvent(\n      EventTypes.Drag,\n      groupName,\n      (name, [el, source]: [Element, Element]) => ({ name, el, source })\n    )\n  );\n\n  public dragend = (groupName?: string) => this.dispatch$.pipe(\n    filterEvent(\n      EventTypes.DragEnd,\n      groupName,\n      (name, [el]: [Element]) => ({ name, el })\n    )\n  );\n\n  public drop = (groupName?: string) => this.dispatch$.pipe(\n    filterEvent(\n      EventTypes.Drop,\n      groupName,\n      (name, [\n        el, target, source, sibling\n      ]: [Element, Element, Element, Element]) => {\n        return { name, el, target, source, sibling };\n      })\n  );\n\n  private elContainerSource =\n    (eventType: EventTypes) =>\n    (groupName?: string) =>\n    this.dispatch$.pipe(\n      filterEvent(eventType, groupName, elContainerSourceProjector)\n    );\n\n  public cancel = this.elContainerSource(EventTypes.Cancel);\n  public remove = this.elContainerSource(EventTypes.Remove);\n  public shadow = this.elContainerSource(EventTypes.Shadow);\n  public over = this.elContainerSource(EventTypes.Over);\n  public out = this.elContainerSource(EventTypes.Out);\n\n  public cloned = (groupName?: string) => this.dispatch$.pipe(\n    filterEvent(\n      EventTypes.Cloned,\n      groupName,\n      (name, [\n        clone, original, cloneType\n      ]: [Element, Element, 'mirror' | 'copy']) => {\n        return { name, clone, original, cloneType }\n      })\n  );\n\n  public dropModel = <T = any>(groupName?: string) => this.dispatch$.pipe(\n    filterEvent(\n      EventTypes.DropModel,\n      groupName,\n      (name, [\n        el, target, source, sibling, item, sourceModel, targetModel, sourceIndex, targetIndex\n      ]: [Element, Element, Element, Element, T, T[], T[], number, number]) => {\n        return { name, el, target, source, sibling, item, sourceModel, targetModel, sourceIndex, targetIndex }\n      })\n  );\n\n  public removeModel = <T = any>(groupName?: string) => this.dispatch$.pipe(\n    filterEvent(\n      EventTypes.RemoveModel,\n      groupName,\n      (name, [\n        el, container, source, item, sourceModel, sourceIndex\n      ]: [Element, Element, Element, T, T[], number]) => {\n        return { name, el, container, source, item, sourceModel, sourceIndex }\n      }\n    )\n  );\n\n  private groups: { [k: string]: Group } = {};\n\n  constructor (@Optional() private drakeFactory: DrakeFactory = null) {\n    if (this.drakeFactory === null) {\n      this.drakeFactory = new DrakeFactory();\n    }\n  }\n\n  /** Public mainly for testing purposes. Prefer `createGroup()`. */\n  public add(group: Group): Group {\n    let existingGroup = this.find(group.name);\n    if (existingGroup) {\n      throw new Error('Group named: \"' + group.name + '\" already exists.');\n    }\n    this.groups[group.name] = group;\n    this.handleModels(group);\n    this.setupEvents(group);\n    return group;\n  }\n\n  public find(name: string): Group {\n    return this.groups[name];\n  }\n\n  public destroy(name: string): void {\n    let group = this.find(name);\n    if (!group) {\n      return;\n    }\n    group.drake && group.drake.destroy();\n    delete this.groups[name];\n  }\n\n  /**\n   * Creates a group with the specified name and options.\n   *\n   * Note: formerly known as `setOptions`\n   */\n  public createGroup<T = any>(name: string, options: DragulaOptions<T>): Group {\n    return this.add(new Group(\n      name,\n      this.drakeFactory.build([], options),\n      options\n    ));\n  }\n\n  private handleModels({ name, drake, options }: Group): void {\n    let dragElm: any;\n    let dragIndex: number;\n    let dropIndex: number;\n    drake.on('remove', (el: any, container: any, source: any) => {\n      if (!drake.models) {\n        return;\n      }\n      let sourceModel = drake.models[drake.containers.indexOf(source)];\n      sourceModel = sourceModel.slice(0); // clone it\n      const item = sourceModel.splice(dragIndex, 1)[0];\n      // console.log('REMOVE');\n      // console.log(sourceModel);\n      this.dispatch$.next({\n        event: EventTypes.RemoveModel,\n        name,\n        args: [ el, container, source, item, sourceModel, dragIndex ]\n      });\n    });\n    drake.on('drag', (el: any, source: any) => {\n      if (!drake.models) {\n        return;\n      }\n      dragElm = el;\n      dragIndex = this.domIndexOf(el, source);\n    });\n    drake.on('drop', (dropElm: any, target: Element, source: Element, sibling?: Element) => {\n      if (!drake.models || !target) {\n        return;\n      }\n      dropIndex = this.domIndexOf(dropElm, target);\n      let sourceModel = drake.models[drake.containers.indexOf(source)];\n      let targetModel = drake.models[drake.containers.indexOf(target)];\n      // console.log('DROP');\n      // console.log(sourceModel);\n      let item: any;\n      if (target === source) {\n        sourceModel = sourceModel.slice(0)\n        item = sourceModel.splice(dragIndex, 1)[0];\n        sourceModel.splice(dropIndex, 0, item);\n        // this was true before we cloned and updated sourceModel,\n        // but targetModel still has the old value\n        targetModel = sourceModel;\n      } else {\n        let isCopying = dragElm !== dropElm;\n        item = sourceModel[dragIndex];\n        if (isCopying) {\n          if (!options.copyItem) {\n            throw new Error(\"If you have enabled `copy` on a group, you must provide a `copyItem` function.\")\n          }\n          item = options.copyItem(item);\n        }\n\n        if (!isCopying) {\n          sourceModel = sourceModel.slice(0)\n          sourceModel.splice(dragIndex, 1);\n        }\n        targetModel = targetModel.slice(0)\n        targetModel.splice(dropIndex, 0, item);\n        if (isCopying) {\n          try {\n            target.removeChild(dropElm);\n          } catch (e) {}\n        }\n      }\n      this.dispatch$.next({\n        event: EventTypes.DropModel,\n        name,\n        args: [ dropElm, target, source, sibling, item, sourceModel, targetModel, dragIndex, dropIndex ]\n      });\n    });\n  }\n\n  private setupEvents(group: Group): void {\n    if (group.initEvents) {\n      return;\n    }\n    group.initEvents = true;\n    const name = group.name;\n    let that: any = this;\n    let emitter = (event: EventTypes) => {\n      group.drake.on(event, (...args: any[]) => {\n        this.dispatch$.next({ event, name, args });\n      });\n    };\n    AllEvents.forEach(emitter);\n  }\n\n  private domIndexOf(child: any, parent: any): any {\n    return Array.prototype.indexOf.call(parent.children, child);\n  }\n}\n"]}