gridstack-profile
Version:
TypeScript/JS lib for dashboard layout and creation, responsive, mobile support, no external dependencies, with many wrappers (React, Angular, Vue, Ember, knockout...)
278 lines • 40.1 kB
JavaScript
/**
* gridstack.component.ts 8.2.1-dev
* Copyright (c) 2022 Alain Dumesny - see GridStack root license
*/
import { Component, ContentChildren, EventEmitter, Input, Output, ViewChild, ViewContainerRef, reflectComponentType } from '@angular/core';
import { Subject } from 'rxjs';
import { takeUntil } from 'rxjs/operators';
import { GridStack } from 'gridstack';
import { GridstackItemComponent } from './gridstack-item.component';
import * as i0 from "@angular/core";
import * as i1 from "@angular/common";
/**
* HTML Component Wrapper for gridstack, in combination with GridstackItemComponent for the items
*/
export class GridstackComponent {
constructor(
// private readonly zone: NgZone,
// private readonly cd: ChangeDetectorRef,
elementRef) {
this.elementRef = elementRef;
/** individual list of GridStackEvent callbacks handlers as output
* otherwise use this.grid.on('name1 name2 name3', callback) to handle multiple at once
* see https://github.com/gridstack/gridstack.js/blob/master/demo/events.js#L4
*
* Note: camel casing and 'CB' added at the end to prevent @angular-eslint/no-output-native
* eg: 'change' would trigger the raw CustomEvent so use different name.
*/
this.addedCB = new EventEmitter();
this.changeCB = new EventEmitter();
this.disableCB = new EventEmitter();
this.dragCB = new EventEmitter();
this.dragStartCB = new EventEmitter();
this.dragStopCB = new EventEmitter();
this.droppedCB = new EventEmitter();
this.enableCB = new EventEmitter();
this.removedCB = new EventEmitter();
this.resizeCB = new EventEmitter();
this.resizeStartCB = new EventEmitter();
this.resizeStopCB = new EventEmitter();
this.ngUnsubscribe = new Subject();
this.el._gridComp = this;
}
/** initial options for creation of the grid */
set options(val) { this._options = val; }
/** return the current running options */
get options() { return this._grid?.opts || this._options || {}; }
/** return the native element that contains grid specific fields as well */
get el() { return this.elementRef.nativeElement; }
/** return the GridStack class */
get grid() { return this._grid; }
/** add a list of ng Component to be mapped to selector */
static addComponentToSelectorType(typeList) {
typeList.forEach(type => GridstackComponent.selectorToType[GridstackComponent.getSelector(type)] = type);
}
/** return the ng Component selector */
static getSelector(type) {
return reflectComponentType(type).selector;
}
ngOnInit() {
// init ourself before any template children are created since we track them below anyway - no need to double create+update widgets
this.loaded = !!this.options?.children?.length;
this._grid = GridStack.init(this._options, this.el);
delete this._options; // GS has it now
this.checkEmpty();
}
/** wait until after all DOM is ready to init gridstack children (after angular ngFor and sub-components run first) */
ngAfterContentInit() {
// track whenever the children list changes and update the layout...
this.gridstackItems?.changes
.pipe(takeUntil(this.ngUnsubscribe))
.subscribe(() => this.updateAll());
// ...and do this once at least unless we loaded children already
if (!this.loaded)
this.updateAll();
this.hookEvents(this.grid);
}
ngOnDestroy() {
delete this.ref;
this.ngUnsubscribe.next();
this.ngUnsubscribe.complete();
this.grid?.destroy();
delete this._grid;
delete this.el._gridComp;
}
/**
* called when the TEMPLATE list of items changes - get a list of nodes and
* update the layout accordingly (which will take care of adding/removing items changed by Angular)
*/
updateAll() {
if (!this.grid)
return;
const layout = [];
this.gridstackItems?.forEach(item => {
layout.push(item.options);
item.clearOptions();
});
this.grid.load(layout); // efficient that does diffs only
}
/** check if the grid is empty, if so show alternative content */
checkEmpty() {
if (!this.grid)
return;
const isEmpty = !this.grid.engine.nodes.length;
if (isEmpty === this.isEmpty)
return;
this.isEmpty = isEmpty;
// this.cd.detectChanges();
}
/** get all known events as easy to use Outputs for convenience */
hookEvents(grid) {
if (!grid)
return;
grid
.on('added', (event, nodes) => { this.checkEmpty(); this.addedCB.emit({ event, nodes }); })
.on('change', (event, nodes) => this.changeCB.emit({ event, nodes }))
.on('disable', (event) => this.disableCB.emit({ event }))
.on('drag', (event, el) => this.dragCB.emit({ event, el }))
.on('dragstart', (event, el) => this.dragStartCB.emit({ event, el }))
.on('dragstop', (event, el) => this.dragStopCB.emit({ event, el }))
.on('dropped', (event, previousNode, newNode) => this.droppedCB.emit({ event, previousNode, newNode }))
.on('enable', (event) => this.enableCB.emit({ event }))
.on('removed', (event, nodes) => { this.checkEmpty(); this.removedCB.emit({ event, nodes }); })
.on('resize', (event, el) => this.resizeCB.emit({ event, el }))
.on('resizestart', (event, el) => this.resizeStartCB.emit({ event, el }))
.on('resizestop', (event, el) => this.resizeStopCB.emit({ event, el }));
}
}
/**
* stores the selector -> Type mapping, so we can create items dynamically from a string.
* Unfortunately Ng doesn't provide public access to that mapping.
*/
GridstackComponent.selectorToType = {};
GridstackComponent.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.3.0", ngImport: i0, type: GridstackComponent, deps: [{ token: i0.ElementRef }], target: i0.ɵɵFactoryTarget.Component });
GridstackComponent.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "14.3.0", type: GridstackComponent, selector: "gridstack", inputs: { options: "options", isEmpty: "isEmpty" }, outputs: { addedCB: "addedCB", changeCB: "changeCB", disableCB: "disableCB", dragCB: "dragCB", dragStartCB: "dragStartCB", dragStopCB: "dragStopCB", droppedCB: "droppedCB", enableCB: "enableCB", removedCB: "removedCB", resizeCB: "resizeCB", resizeStartCB: "resizeStartCB", resizeStopCB: "resizeStopCB" }, queries: [{ propertyName: "gridstackItems", predicate: GridstackItemComponent }], viewQueries: [{ propertyName: "container", first: true, predicate: ["container"], descendants: true, read: ViewContainerRef, static: true }], ngImport: i0, template: `
<!-- content to show when when grid is empty, like instructions on how to add widgets -->
<ng-content select="[empty-content]" *ngIf="isEmpty"></ng-content>
<!-- where dynamic items go -->
<ng-template #container></ng-template>
<!-- where template items go -->
<ng-content></ng-content>
`, isInline: true, styles: [":host{display:block}\n"], dependencies: [{ kind: "directive", type: i1.NgIf, selector: "[ngIf]", inputs: ["ngIf", "ngIfThen", "ngIfElse"] }] });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "14.3.0", ngImport: i0, type: GridstackComponent, decorators: [{
type: Component,
args: [{ selector: 'gridstack', template: `
<!-- content to show when when grid is empty, like instructions on how to add widgets -->
<ng-content select="[empty-content]" *ngIf="isEmpty"></ng-content>
<!-- where dynamic items go -->
<ng-template #container></ng-template>
<!-- where template items go -->
<ng-content></ng-content>
`, styles: [":host{display:block}\n"] }]
}], ctorParameters: function () { return [{ type: i0.ElementRef }]; }, propDecorators: { gridstackItems: [{
type: ContentChildren,
args: [GridstackItemComponent]
}], container: [{
type: ViewChild,
args: ['container', { read: ViewContainerRef, static: true }]
}], options: [{
type: Input
}], isEmpty: [{
type: Input
}], addedCB: [{
type: Output
}], changeCB: [{
type: Output
}], disableCB: [{
type: Output
}], dragCB: [{
type: Output
}], dragStartCB: [{
type: Output
}], dragStopCB: [{
type: Output
}], droppedCB: [{
type: Output
}], enableCB: [{
type: Output
}], removedCB: [{
type: Output
}], resizeCB: [{
type: Output
}], resizeStartCB: [{
type: Output
}], resizeStopCB: [{
type: Output
}] } });
/**
* can be used when a new item needs to be created, which we do as a Angular component, or deleted (skip)
**/
export function gsCreateNgComponents(host, w, add, isGrid) {
if (add) {
//
// create the component dynamically - see https://angular.io/docs/ts/latest/cookbook/dynamic-component-loader.html
//
if (!host)
return;
if (isGrid) {
const container = host.parentElement?._gridItemComp?.container;
// TODO: figure out how to create ng component inside regular Div. need to access app injectors...
// if (!container) {
// const hostElement: Element = host;
// const environmentInjector: EnvironmentInjector;
// grid = createComponent(GridstackComponent, {environmentInjector, hostElement})?.instance;
// }
const gridRef = container?.createComponent(GridstackComponent);
const grid = gridRef?.instance;
if (!grid)
return;
grid.ref = gridRef;
grid.options = w;
return grid.el;
}
else {
const gridComp = host._gridComp;
const gridItemRef = gridComp?.container?.createComponent(GridstackItemComponent);
const gridItem = gridItemRef?.instance;
if (!gridItem)
return;
gridItem.ref = gridItemRef;
// IFF we're not a subGrid, define what type of component to create as child, OR you can do it GridstackItemComponent template, but this is more generic
const selector = w.selector;
const type = selector ? GridstackComponent.selectorToType[selector] : undefined;
if (!w.subGridOpts && type) {
const childWidget = gridItem.container?.createComponent(type)?.instance;
if (typeof childWidget?.serialize === 'function' && typeof childWidget?.deserialize === 'function') {
// proper BaseWidget subclass, save it and load additional data
gridItem.childWidget = childWidget;
childWidget.deserialize(w);
}
}
return gridItem.el;
}
}
else {
//
// REMOVE - have to call ComponentRef:destroy() for dynamic objects to correctly remove themselves
// Note: this will destroy all children dynamic components as well: gridItem -> childWidget
//
const n = w;
if (isGrid) {
const grid = n.el?._gridComp;
if (grid?.ref)
grid.ref.destroy();
else
grid?.ngOnDestroy();
}
else {
const gridItem = n.el?._gridItemComp;
if (gridItem?.ref)
gridItem.ref.destroy();
else
gridItem?.ngOnDestroy();
}
}
return;
}
/**
* called for each item in the grid - check if additional information needs to be saved.
* Note: since this is options minus gridstack private members using Utils.removeInternalForSave(),
* this typically doesn't need to do anything. However your custom Component @Input() are now supported
* using BaseWidget.serialize()
*/
export function gsSaveAdditionalNgInfo(n, w) {
const gridItem = n.el?._gridItemComp;
if (gridItem) {
const input = gridItem.childWidget?.serialize();
if (input) {
w.input = input;
}
return;
}
// else check if Grid
const grid = n.el?._gridComp;
if (grid) {
//.... save any custom data
}
}
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* gridstack.component.ts 8.2.1-dev\n * Copyright (c) 2022 Alain Dumesny - see GridStack root license\n */\n\nimport { AfterContentInit, Component, ContentChildren, ElementRef, EventEmitter, Input,\n  OnDestroy, OnInit, Output, QueryList, Type, ViewChild, ViewContainerRef, reflectComponentType, ComponentRef } from '@angular/core';\nimport { Subject } from 'rxjs';\nimport { takeUntil } from 'rxjs/operators';\nimport { GridHTMLElement, GridItemHTMLElement, GridStack, GridStackNode, GridStackOptions, GridStackWidget } from 'gridstack';\n\nimport { GridItemCompHTMLElement, GridstackItemComponent } from './gridstack-item.component';\nimport { BaseWidget } from './base-widget';\n\n/** events handlers emitters signature for different events */\nexport type eventCB = {event: Event};\nexport type elementCB = {event: Event, el: GridItemHTMLElement};\nexport type nodesCB = {event: Event, nodes: GridStackNode[]};\nexport type droppedCB = {event: Event, previousNode: GridStackNode, newNode: GridStackNode};\n\nexport type NgCompInputs = {[key: string]: any};\n\n/** extends to store Ng Component selector, instead/inAddition to content */\nexport interface NgGridStackWidget extends GridStackWidget {\n  selector?: string; // component type to create as content\n  input?: NgCompInputs; // serialized data for the component input fields\n}\nexport interface NgGridStackNode extends GridStackNode {\n  selector?: string; // component type to create as content\n}\nexport interface NgGridStackOptions extends GridStackOptions {\n  children?: NgGridStackWidget[];\n  subGridOpts?: NgGridStackOptions;\n}\n\n/** store element to Ng Class pointer back */\nexport interface GridCompHTMLElement extends GridHTMLElement {\n  _gridComp?: GridstackComponent;\n}\n\n/** selector string to runtime Type mapping */\nexport type SelectorToType = {[key: string]: Type<Object>};\n\n/**\n * HTML Component Wrapper for gridstack, in combination with GridstackItemComponent for the items\n */\n@Component({\n  selector: 'gridstack',\n  template: `\n    <!-- content to show when when grid is empty, like instructions on how to add widgets -->\n    <ng-content select=\"[empty-content]\" *ngIf=\"isEmpty\"></ng-content>\n    <!-- where dynamic items go -->\n    <ng-template #container></ng-template>\n    <!-- where template items go -->\n    <ng-content></ng-content>\n  `,\n  styles: [`\n    :host { display: block; }\n  `],\n  // changeDetection: ChangeDetectionStrategy.OnPush, // IFF you want to optimize and control when ChangeDetection needs to happen...\n})\nexport class GridstackComponent implements OnInit, AfterContentInit, OnDestroy {\n\n  /** track list of TEMPLATE grid items so we can sync between DOM and GS internals */\n  @ContentChildren(GridstackItemComponent) public gridstackItems?: QueryList<GridstackItemComponent>;\n  /** container to append items dynamically */\n  @ViewChild('container', { read: ViewContainerRef, static: true}) public container?: ViewContainerRef;\n\n  /** initial options for creation of the grid */\n  @Input() public set options(val: GridStackOptions) { this._options = val; }\n  /** return the current running options */\n  public get options(): GridStackOptions { return this._grid?.opts || this._options || {}; }\n\n  /** true while ng-content with 'no-item-content' should be shown when last item is removed from a grid */\n  @Input() public isEmpty?: boolean;\n\n  /** individual list of GridStackEvent callbacks handlers as output\n   * otherwise use this.grid.on('name1 name2 name3', callback) to handle multiple at once\n   * see https://github.com/gridstack/gridstack.js/blob/master/demo/events.js#L4\n   *\n   * Note: camel casing and 'CB' added at the end to prevent @angular-eslint/no-output-native\n   * eg: 'change' would trigger the raw CustomEvent so use different name.\n   */\n  @Output() public addedCB = new EventEmitter<nodesCB>();\n  @Output() public changeCB = new EventEmitter<nodesCB>();\n  @Output() public disableCB = new EventEmitter<eventCB>();\n  @Output() public dragCB = new EventEmitter<elementCB>();\n  @Output() public dragStartCB = new EventEmitter<elementCB>();\n  @Output() public dragStopCB = new EventEmitter<elementCB>();\n  @Output() public droppedCB = new EventEmitter<droppedCB>();\n  @Output() public enableCB = new EventEmitter<eventCB>();\n  @Output() public removedCB = new EventEmitter<nodesCB>();\n  @Output() public resizeCB = new EventEmitter<elementCB>();\n  @Output() public resizeStartCB = new EventEmitter<elementCB>();\n  @Output() public resizeStopCB = new EventEmitter<elementCB>();\n\n  /** return the native element that contains grid specific fields as well */\n  public get el(): GridCompHTMLElement { return this.elementRef.nativeElement; }\n\n  /** return the GridStack class */\n  public get grid(): GridStack | undefined { return this._grid; }\n\n  /** ComponentRef of ourself - used by dynamic object to correctly get removed */\n  public ref: ComponentRef<GridstackComponent> | undefined;\n\n  /**\n   * stores the selector -> Type mapping, so we can create items dynamically from a string.\n   * Unfortunately Ng doesn't provide public access to that mapping.\n   */\n  public static selectorToType: SelectorToType = {};\n  /** add a list of ng Component to be mapped to selector */\n  public static addComponentToSelectorType(typeList: Array<Type<Object>>) {\n    typeList.forEach(type => GridstackComponent.selectorToType[ GridstackComponent.getSelector(type) ] = type);\n  }\n  /** return the ng Component selector */\n  public static getSelector(type: Type<Object>): string {\n    return reflectComponentType(type)!.selector;\n  }\n\n  private _options?: GridStackOptions;\n  private _grid?: GridStack;\n  private loaded?: boolean;\n  private ngUnsubscribe: Subject<void> = new Subject();\n\n  constructor(\n    // private readonly zone: NgZone,\n    // private readonly cd: ChangeDetectorRef,\n    private readonly elementRef: ElementRef<GridCompHTMLElement>,\n  ) {\n    this.el._gridComp = this;\n  }\n\n  public ngOnInit(): void {\n    // init ourself before any template children are created since we track them below anyway - no need to double create+update widgets\n    this.loaded = !!this.options?.children?.length;\n    this._grid = GridStack.init(this._options, this.el);\n    delete this._options; // GS has it now\n\n    this.checkEmpty();\n  }\n\n  /** wait until after all DOM is ready to init gridstack children (after angular ngFor and sub-components run first) */\n  public ngAfterContentInit(): void {\n    // track whenever the children list changes and update the layout...\n    this.gridstackItems?.changes\n      .pipe(takeUntil(this.ngUnsubscribe))\n      .subscribe(() => this.updateAll());\n    // ...and do this once at least unless we loaded children already\n    if (!this.loaded) this.updateAll();\n    this.hookEvents(this.grid);\n  }\n\n  public ngOnDestroy(): void {\n    delete this.ref;\n    this.ngUnsubscribe.next();\n    this.ngUnsubscribe.complete();\n    this.grid?.destroy();\n    delete this._grid;\n    delete this.el._gridComp;\n  }\n\n  /**\n   * called when the TEMPLATE list of items changes - get a list of nodes and\n   * update the layout accordingly (which will take care of adding/removing items changed by Angular)\n   */\n  public updateAll() {\n    if (!this.grid) return;\n    const layout: GridStackWidget[] = [];\n    this.gridstackItems?.forEach(item => {\n      layout.push(item.options);\n      item.clearOptions();\n    });\n    this.grid.load(layout); // efficient that does diffs only\n  }\n\n  /** check if the grid is empty, if so show alternative content */\n  public checkEmpty() {\n    if (!this.grid) return;\n    const isEmpty = !this.grid.engine.nodes.length;\n    if (isEmpty === this.isEmpty) return;\n    this.isEmpty = isEmpty;\n    // this.cd.detectChanges();\n  }\n\n  /** get all known events as easy to use Outputs for convenience */\n  private hookEvents(grid?: GridStack) {\n    if (!grid) return;\n    grid\n    .on('added', (event: Event, nodes: GridStackNode[]) => { this.checkEmpty(); this.addedCB.emit({event, nodes}); })\n    .on('change', (event: Event, nodes: GridStackNode[]) => this.changeCB.emit({event, nodes}))\n    .on('disable', (event: Event) => this.disableCB.emit({event}))\n    .on('drag', (event: Event, el: GridItemHTMLElement) => this.dragCB.emit({event, el}))\n    .on('dragstart', (event: Event, el: GridItemHTMLElement) => this.dragStartCB.emit({event, el}))\n    .on('dragstop', (event: Event, el: GridItemHTMLElement) => this.dragStopCB.emit({event, el}))\n    .on('dropped', (event: Event, previousNode: GridStackNode, newNode: GridStackNode) => this.droppedCB.emit({event, previousNode, newNode}))\n    .on('enable', (event: Event) => this.enableCB.emit({event}))\n    .on('removed', (event: Event, nodes: GridStackNode[]) => { this.checkEmpty(); this.removedCB.emit({event, nodes}); })\n    .on('resize', (event: Event, el: GridItemHTMLElement) => this.resizeCB.emit({event, el}))\n    .on('resizestart', (event: Event, el: GridItemHTMLElement) => this.resizeStartCB.emit({event, el}))\n    .on('resizestop', (event: Event, el: GridItemHTMLElement) => this.resizeStopCB.emit({event, el}))\n  }\n}\n\n/**\n * can be used when a new item needs to be created, which we do as a Angular component, or deleted (skip)\n **/\nexport function gsCreateNgComponents(host: GridCompHTMLElement | HTMLElement, w: NgGridStackWidget | GridStackNode, add: boolean, isGrid: boolean): HTMLElement | undefined {\n  if (add) {\n    //\n    // create the component dynamically - see https://angular.io/docs/ts/latest/cookbook/dynamic-component-loader.html\n    //\n    if (!host) return;\n    if (isGrid) {\n      const container = (host.parentElement as GridItemCompHTMLElement)?._gridItemComp?.container;\n      // TODO: figure out how to create ng component inside regular Div. need to access app injectors...\n      // if (!container) {\n      //   const hostElement: Element = host;\n      //   const environmentInjector: EnvironmentInjector;\n      //   grid = createComponent(GridstackComponent, {environmentInjector, hostElement})?.instance;\n      // }\n      const gridRef = container?.createComponent(GridstackComponent);\n      const grid = gridRef?.instance;\n      if (!grid) return;\n      grid.ref = gridRef;\n      grid.options = w as GridStackOptions;\n      return grid.el;\n    } else {\n      const gridComp = (host as GridCompHTMLElement)._gridComp;\n      const gridItemRef = gridComp?.container?.createComponent(GridstackItemComponent);\n      const gridItem = gridItemRef?.instance;\n      if (!gridItem) return;\n      gridItem.ref = gridItemRef\n\n      // IFF we're not a subGrid, define what type of component to create as child, OR you can do it GridstackItemComponent template, but this is more generic\n      const selector = (w as NgGridStackWidget).selector;\n      const type = selector ? GridstackComponent.selectorToType[selector] : undefined;\n      if (!w.subGridOpts && type) {\n        const childWidget = gridItem.container?.createComponent(type)?.instance as BaseWidget;\n        if (typeof childWidget?.serialize === 'function' && typeof childWidget?.deserialize === 'function') {\n          // proper BaseWidget subclass, save it and load additional data\n          gridItem.childWidget = childWidget;\n          childWidget.deserialize(w);\n        }\n      }\n\n      return gridItem.el;\n    }\n  } else {\n    //\n    // REMOVE - have to call ComponentRef:destroy() for dynamic objects to correctly remove themselves\n    // Note: this will destroy all children dynamic components as well: gridItem -> childWidget\n    //\n    const n = w as GridStackNode;\n    if (isGrid) {\n      const grid = (n.el as GridCompHTMLElement)?._gridComp;\n      if (grid?.ref) grid.ref.destroy();\n      else grid?.ngOnDestroy();\n    } else {\n      const gridItem = (n.el as GridItemCompHTMLElement)?._gridItemComp;\n      if (gridItem?.ref) gridItem.ref.destroy();\n      else gridItem?.ngOnDestroy();\n    }\n  }\n  return;\n}\n\n/**\n * called for each item in the grid - check if additional information needs to be saved.\n * Note: since this is options minus gridstack private members using Utils.removeInternalForSave(),\n * this typically doesn't need to do anything. However your custom Component @Input() are now supported\n * using BaseWidget.serialize()\n */\nexport function gsSaveAdditionalNgInfo(n: NgGridStackNode, w: NgGridStackWidget) {\n  const gridItem = (n.el as GridItemCompHTMLElement)?._gridItemComp;\n  if (gridItem) {\n    const input = gridItem.childWidget?.serialize();\n    if (input) {\n      w.input = input;\n    }\n    return;\n  }\n  // else check if Grid\n  const grid = (n.el as GridCompHTMLElement)?._gridComp;\n  if (grid) {\n    //.... save any custom data\n  }\n}\n"]}