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import {observer} from "mobx-react";
import {Key, KeyStore} from "../../fields/Key";
import React = require("react");
import {action, observable, computed} from "mobx";
import {Document} from "../../fields/Document";
import {DocumentViewModel} from "../../viewmodels/DocumentViewModel";
import {DocumentView} from "../nodes/DocumentView";
import {ListField} from "../../fields/ListField";
import {NumberField} from "../../fields/NumberField";
import {SSL_OP_SINGLE_DH_USE} from "constants";
import {DocumentDecorations} from "../../DocumentDecorations";
import {SelectionManager} from "../../util/SelectionManager";
import {Documents} from "../../documents/Documents";
import {ContextMenu} from "../ContextMenu";
import {Opt} from "../../fields/Field";
import {DragManager} from "../../util/DragManager";
import {Utils} from "../../Utils";
interface IProps {
fieldKey: Key;
Document: Document;
ContainingDocumentView: Opt<DocumentView>;
}
@observer
export class CollectionFreeFormView extends React.Component<IProps> {
private _containerRef = React.createRef<HTMLDivElement>();
private _canvasRef = React.createRef<HTMLDivElement>();
constructor(props: IProps) {
super(props);
}
@computed
public get active(): boolean {
var isSelected = (this.props.ContainingDocumentView != undefined && SelectionManager.IsSelected(this.props.ContainingDocumentView));
var childSelected = SelectionManager.SelectedDocuments().some(view => view.props.ContainingCollectionView == this);
var topMost = this.props.ContainingDocumentView != undefined && this.props.ContainingDocumentView.props.ContainingCollectionView == undefined;
return isSelected || childSelected || topMost;
}
drop = (e: Event, de: DragManager.DropEvent) => {
const ele = this._canvasRef.current;
if (!ele) {
return;
}
const doc = de.data[ "document" ];
const xOffset = de.data[ "xOffset" ] as number || 0;
const yOffset = de.data[ "yOffset" ] as number || 0;
if (doc instanceof DocumentView) {
if (doc.props.ContainingCollectionView && doc.props.ContainingCollectionView !== this) {
doc.props.ContainingCollectionView.removeDocument(doc.props.Document);
this.addDocument(doc.props.Document);
}
const {scale, translateX, translateY} = Utils.GetScreenTransform(ele);
const screenX = de.x - xOffset;
const screenY = de.y - yOffset;
const docX = (screenX - translateX) / scale;
const docY = (screenY - translateY) / scale;
doc.x = docX;
doc.y = docY;
}
e.stopPropagation();
}
componentDidMount() {
if (this._containerRef.current) {
DragManager.MakeDropTarget(this._containerRef.current, {
handlers: {
drop: this.drop
}
});
}
}
_lastX: number = 0;
_lastY: number = 0;
@action
onPointerDown = (e: React.PointerEvent): void => {
if (e.button === 2 && this.active) {
e.stopPropagation();
e.preventDefault();
document.removeEventListener("pointermove", this.onPointerMove);
document.addEventListener("pointermove", this.onPointerMove);
document.removeEventListener("pointerup", this.onPointerUp);
document.addEventListener("pointerup", this.onPointerUp);
this._lastX = e.pageX;
this._lastY = e.pageY;
}
}
@action
onPointerUp = (e: PointerEvent): void => {
document.removeEventListener("pointermove", this.onPointerMove);
document.removeEventListener("pointerup", this.onPointerUp);
e.stopPropagation();
}
@action
onPointerMove = (e: PointerEvent): void => {
if (!e.cancelBubble) {
e.preventDefault();
e.stopPropagation();
const doc = this.props.Document;
let me = this;
let currScale: number = this.props.Document.GetFieldValue(KeyStore.Scale, NumberField, Number(1));
if (me.props.ContainingDocumentView!.props.ContainingDocumentView != undefined) {
let pme = me.props.ContainingDocumentView!.props.ContainingDocumentView!.props.Document;
currScale = pme.GetFieldValue(KeyStore.Scale, NumberField, Number(0));
}
let x = doc.GetFieldValue(KeyStore.PanX, NumberField, Number(0));
let y = doc.GetFieldValue(KeyStore.PanY, NumberField, Number(0));
doc.SetFieldValue(KeyStore.PanX, x + (e.pageX - this._lastX) / currScale, NumberField);
doc.SetFieldValue(KeyStore.PanY, y + (e.pageY - this._lastY) / currScale, NumberField);
this._lastX = e.pageX;
this._lastY = e.pageY;
}
}
@action
onPointerWheel = (e: React.WheelEvent): void => {
e.stopPropagation();
let {LocalX, Ss, W, Panxx, Xx, LocalY, Panyy, Yy, ContainerX, ContainerY} = this.props.ContainingDocumentView!.TransformToLocalPoint(e.pageX, e.pageY);
var deltaScale = (1 - (e.deltaY / 1000)) * Ss;
var newContainerX = LocalX * deltaScale + W / 2 - W / 2 * deltaScale + Panxx + Xx;
var newContainerY = LocalY * deltaScale + Panyy + Yy;
let dx = ContainerX - newContainerX;
let dy = ContainerY - newContainerY;
this.props.Document.SetField(KeyStore.Scale, new NumberField(deltaScale));
this.props.Document.SetFieldValue(KeyStore.PanX, Panxx + dx, NumberField);
this.props.Document.SetFieldValue(KeyStore.PanY, Panyy + dy, NumberField);
}
onDrop = (e: React.DragEvent): void => {
e.stopPropagation()
e.preventDefault()
let fReader = new FileReader()
let file = e.dataTransfer.items[ 0 ].getAsFile();
let that = this;
const panx: number = this.props.Document.GetFieldValue(KeyStore.PanX, NumberField, Number(0));
const pany: number = this.props.Document.GetFieldValue(KeyStore.PanY, NumberField, Number(0));
let x = e.pageX - panx
let y = e.pageY - pany
fReader.addEventListener("load", action("drop", (event) => {
if (fReader.result) {
let url = "" + fReader.result;
let doc = Documents.ImageDocument(url, {
x: x, y: y
})
let docs = that.props.Document.GetFieldT(KeyStore.Data, ListField);
if (!docs) {
docs = new ListField<Document>();
that.props.Document.SetField(KeyStore.Data, docs)
}
docs.Data.push(doc);
}
}), false)
if (file) {
fReader.readAsDataURL(file)
}
}
@action
addDocument = (doc: Document): void => {
//TODO This won't create the field if it doesn't already exist
const value = this.props.Document.GetFieldValue(this.props.fieldKey, ListField, new Array<Document>())
value.push(doc);
}
@action
removeDocument = (doc: Document): void => {
//TODO This won't create the field if it doesn't already exist
const value = this.props.Document.GetFieldValue(this.props.fieldKey, ListField, new Array<Document>())
if (value.indexOf(doc) !== -1) {
value.splice(value.indexOf(doc), 1)
SelectionManager.DeselectAll()
ContextMenu.Instance.clearItems()
}
}
onDragOver = (e: React.DragEvent): void => {
}
render() {
const {fieldKey, Document: Document} = this.props;
const value: Document[] = Document.GetFieldValue(fieldKey, ListField, []);
const panx: number = Document.GetFieldValue(KeyStore.PanX, NumberField, Number(0));
const pany: number = Document.GetFieldValue(KeyStore.PanY, NumberField, Number(0));
const currScale: number = Document.GetFieldValue(KeyStore.Scale, NumberField, Number(1));
return (
<div className="border" style={{
borderStyle: "solid",
borderWidth: "2px",
}}>
<div className="collectionfreeformview-container" onPointerDown={this.onPointerDown} onWheel={this.onPointerWheel} onContextMenu={(e) => e.preventDefault()} style={{
width: "100%",
height: "calc(100% - 4px)",
overflow: "hidden"
}} onDrop={this.onDrop} onDragOver={this.onDragOver} ref={this._containerRef}>
<div className="collectionfreeformview" style={{transform: `translate(${panx}px, ${pany}px) scale(${currScale}, ${currScale})`, transformOrigin: `left, top`}} ref={this._canvasRef}>
<div className="node-container">
{value.map(doc => {
return (<DocumentView key={doc.Id} ContainingCollectionView={this} Document={doc} ContainingDocumentView={this.props.ContainingDocumentView} />);
})}
</div>
</div>
</div>
</div>
);
}
}
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