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iwe7-design.directive.ts
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iwe7-design.directive.ts
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import {
Directive,
Input,
OnChanges,
ViewContainerRef,
TemplateRef,
ComponentFactoryResolver,
ComponentFactory,
SimpleChanges,
Renderer2
} from "@angular/core";
import { Iwe7DesignLibraryService } from "./iwe7-design-library.service";
import * as _ from "underscore";
import { fromEvent } from "rxjs/observable/fromEvent";
/**
*design="name;class 'class';style 'style';drag true; drop true;"
*/
export const instanceMap: Map<string, any> = new Map();
@Directive({
selector:
"[iwe7Design],[design],[designClass],[designStyle],[designDrag],[designDrop],[designInstance]"
})
export class Iwe7DesignDirective implements OnChanges {
@Input() design: any;
@Input() designClass: { [key: string]: boolean };
@Input() designStyle: { [key: string]: string };
@Input() designDrag: boolean;
@Input() designDrop: boolean;
@Input() designSetting: boolean = false;
@Input() designDebug: boolean = false;
moduleRef: any;
viewContainerRef: ViewContainerRef;
constructor(
private _viewContainerRef: ViewContainerRef,
private template: TemplateRef<any>,
private lib: Iwe7DesignLibraryService,
private renderer2: Renderer2
) {
this.viewContainerRef = _viewContainerRef;
}
ngOnInit() {
if (this.designDebug) {
}
}
ngOnChanges(changes: SimpleChanges) {
if ("design" in changes) {
this.createComponent();
}
}
private createComponent() {
this.viewContainerRef.clear();
let component;
let name = this.design.name || null;
if (!this.designSetting) {
component = this.lib.get(name);
this.lib.uuid = null;
} else {
component = this.lib.getSetting(name);
}
if (!component) {
return "";
}
const elInjector = this.viewContainerRef.parentInjector;
const componentFactoryResolver: ComponentFactoryResolver = this.moduleRef
? this.moduleRef.componentFactoryResolver
: elInjector.get(ComponentFactoryResolver);
const componentFactory = componentFactoryResolver.resolveComponentFactory(
component
);
const componentRef = this.viewContainerRef.createComponent(
componentFactory
);
const { instance } = componentRef;
// 新建一个实例
(<any>instance).props = this.design;
if (this.lib.uuid) {
(<any>instance).props.id = this.lib.uuid;
(<any>instance).props = instanceMap.get(this.lib.uuid).props;
(<any>instance).instance = instanceMap.get(this.lib.uuid);
} else {
this.lib.uuid = (<any>instance).props.id = new Date().getTime();
instanceMap.set(this.lib.uuid, instance);
}
if (!this.designSetting) {
(<any>instance).setClass && (<any>instance).setClass();
this.setStyle((<any>instance).ele.nativeElement);
if (this.designDrag) {
this.setDrag(instance);
}
if (this.designDrop) {
this.setDrop(instance);
}
}
}
private setStyle(ele: any) {
_.map(this.design.style, (s, key) => {
this.renderer2.setStyle(ele, "" + key, s);
});
}
private setDrag(instance: any) {
let ele = instance.ele.nativeElement;
this.etAttribute(
{
draggable: true
},
ele
);
let uuid: string;
fromEvent(ele, "dragstart").subscribe((ev: DragEvent) => {
uuid = instance.id;
ev.dataTransfer.setData("name", "guid_" + instance.guid);
ev.stopPropagation();
});
fromEvent(ele, "dragend").subscribe((ev: DragEvent) => {
// dragend 删除这一个
// this.history.removeComponentByUuid(uuid);
console.log(ele);
});
}
private setDrop(instance: any) {
const ele = instance.ele.nativeElement;
fromEvent(ele, "drop").subscribe((ev: DragEvent) => {
});
}
private etAttribute(classObj: { [key: string]: any }, ele?: HTMLElement) {
if (!ele) {
return "";
}
for (const key in classObj) {
if (typeof classObj[key] === "boolean") {
if (classObj[key]) {
this.renderer2.setAttribute(ele, key, "true");
} else {
this.renderer2.removeAttribute(ele, key);
}
} else {
this.renderer2.setAttribute(ele, key, classObj[key]);
}
}
}
}