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Diffstat (limited to 'src/client/views/nodes/PresBox.tsx')
| -rw-r--r-- | src/client/views/nodes/PresBox.tsx | 529 |
1 files changed, 529 insertions, 0 deletions
diff --git a/src/client/views/nodes/PresBox.tsx b/src/client/views/nodes/PresBox.tsx new file mode 100644 index 000000000..e376fbddb --- /dev/null +++ b/src/client/views/nodes/PresBox.tsx @@ -0,0 +1,529 @@ +import React = require("react"); +import { library } from '@fortawesome/fontawesome-svg-core'; +import { faArrowLeft, faArrowRight, faEdit, faMinus, faPlay, faPlus, faStop, faTimes } from '@fortawesome/free-solid-svg-icons'; +import { FontAwesomeIcon } from "@fortawesome/react-fontawesome"; +import { action, computed, observable, runInAction } from "mobx"; +import { observer } from "mobx-react"; +import { Doc, DocListCast, DocListCastAsync } from "../../../new_fields/Doc"; +import { Id } from "../../../new_fields/FieldSymbols"; +import { List } from "../../../new_fields/List"; +import { listSpec } from "../../../new_fields/Schema"; +import { BoolCast, Cast, FieldValue, NumCast, StrCast } from "../../../new_fields/Types"; +import { Utils } from "../../../Utils"; +import { DocumentManager } from "../../util/DocumentManager"; +import { undoBatch } from "../../util/UndoManager"; +import PresentationElement from "../presentationview/PresentationElement"; +import PresentationViewList from "../presentationview/PresentationList"; +import "../presentationview/PresentationView.scss"; +import { FieldView, FieldViewProps } from './FieldView'; +import { ContextMenu } from "../ContextMenu"; + +library.add(faArrowLeft); +library.add(faArrowRight); +library.add(faPlay); +library.add(faStop); +library.add(faPlus); +library.add(faTimes); +library.add(faMinus); +library.add(faEdit); + + +export interface PresViewProps { + Documents: List<Doc>; +} + +const expandedWidth = 450; + +@observer +export class PresBox extends React.Component<FieldViewProps> { //FieldViewProps? + + + public static LayoutString(fieldKey?: string) { return FieldView.LayoutString(PresBox, fieldKey); } + + public static Instance: PresBox; + + //Keeping track of the doc for the current presentation -- bcz: keeping a list of current presentations shouldn't be needed. Let users create them, store them, as they see fit. + @computed get curPresentation() { return this.props.Document; } + + //mapping from docs to their rendered component + @observable presElementsMappings: Map<Doc, PresentationElement> = new Map(); + //variable that holds all the docs in the presentation + @observable childrenDocs: Doc[] = []; + //variable to hold if presentation is started + @observable presStatus: boolean = false; + //Mapping of guids to presentations. + @observable presentationsMapping: Map<String, Doc> = new Map(); + //Mapping of presentations to guid, so that select option values can be given. + @observable presentationsKeyMapping: Map<Doc, String> = new Map(); + //Variable to keep track of guid of the current presentation + @observable currentSelectedPresValue: string | undefined; + //A flag to keep track if title input is open, which is used in rendering. + @observable PresTitleInputOpen: boolean = false; + //Variable that holds reference to title input, so that new presentations get titles assigned. + @observable titleInputElement: HTMLInputElement | undefined; + @observable PresTitleChangeOpen: boolean = false; + + @observable opacity = 1; + @observable persistOpacity = true; + @observable labelOpacity = 0; + @observable presMode = false; + + @observable public static CurrentPresentation: PresBox; + + //initilize class variables + constructor(props: FieldViewProps) { + super(props); + runInAction(() => PresBox.CurrentPresentation = this); + } + + @action + toggle = (forcedValue: boolean | undefined) => { + if (forcedValue !== undefined) { + this.curPresentation.width = forcedValue ? expandedWidth : 0; + } else { + this.curPresentation.width = this.curPresentation.width === expandedWidth ? 0 : expandedWidth; + } + } + + //Second lifecycle function that gets called when component mounts. It makes sure toS + //get the back-up information from previous session for the current presentation. + async componentDidMount() { + this.setPresentationBackUps(); + } + + + /** + * The function that retrieves the backUps for the current Presentation if present, + * otherwise initializes. + */ + setPresentationBackUps = async () => { + //storing the presentation status,ie. whether it was stopped or playing + let presStatusBackUp = BoolCast(this.curPresentation.presStatus); + runInAction(() => this.presStatus = presStatusBackUp); + } + + //observable means render is re-called every time variable is changed + @observable + collapsed: boolean = false; + next = async () => { + const current = NumCast(this.curPresentation.selectedDoc); + //asking to get document at current index + let docAtCurrentNext = await this.getDocAtIndex(current + 1); + if (docAtCurrentNext === undefined) { + return; + } + let nextSelected = current + 1; + + let presDocs = DocListCast(this.curPresentation.data); + for (; nextSelected < presDocs.length - 1; nextSelected++) { + if (!this.presElementsMappings.get(presDocs[nextSelected + 1])!.props.document.groupButton) { + break; + } + } + + this.gotoDocument(nextSelected, current); + + } + back = async () => { + const current = NumCast(this.curPresentation.selectedDoc); + //requesting for the doc at current index + let docAtCurrent = await this.getDocAtIndex(current); + if (docAtCurrent === undefined) { + return; + } + + //asking for its presentation id. + let curPresId = StrCast(docAtCurrent.presentId); + let prevSelected = current; + let zoomOut: boolean = false; + + //checking if this presentation id is mapped to a group, if so chosing the first element in group + let presDocs = DocListCast(this.curPresentation.data); + let currentsArray: Doc[] = []; + for (; prevSelected > 0 && presDocs[prevSelected].groupButton; prevSelected--) { + currentsArray.push(presDocs[prevSelected]); + } + prevSelected = Math.max(0, prevSelected - 1); + + //checking if any of the group members had used zooming in + currentsArray.forEach((doc: Doc) => { + //let presElem: PresentationElement | undefined = this.presElementsMappings.get(doc); + if (this.presElementsMappings.get(doc)!.props.document.showButton) { + zoomOut = true; + return; + } + }); + + + // if a group set that flag to zero or a single element + //If so making sure to zoom out, which goes back to state before zooming action + if (current > 0) { + if (zoomOut || this.presElementsMappings.get(docAtCurrent)!.showButton) { + let prevScale = NumCast(this.childrenDocs[prevSelected].viewScale, null); + let curScale = DocumentManager.Instance.getScaleOfDocView(this.childrenDocs[current]); + if (prevScale !== undefined) { + if (prevScale !== curScale) { + DocumentManager.Instance.zoomIntoScale(docAtCurrent, prevScale); + } + } + } + } + this.gotoDocument(prevSelected, current); + + } + + /** + * This is the method that checks for the actions that need to be performed + * after the document has been presented, which involves 3 button options: + * Hide Until Presented, Hide After Presented, Fade After Presented + */ + showAfterPresented = (index: number) => { + this.presElementsMappings.forEach((presElem: PresentationElement, key: Doc) => { + //the order of cases is aligned based on priority + if (presElem.props.document.hideTillShownButton) { + if (this.childrenDocs.indexOf(key) <= index) { + key.opacity = 1; + } + } + if (presElem.props.document.hideAfterButton) { + if (this.childrenDocs.indexOf(key) < index) { + key.opacity = 0; + } + } + if (presElem.props.document.fadeButton) { + if (this.childrenDocs.indexOf(key) < index) { + key.opacity = 0.5; + } + } + }); + } + + /** + * This is the method that checks for the actions that need to be performed + * before the document has been presented, which involves 3 button options: + * Hide Until Presented, Hide After Presented, Fade After Presented + */ + hideIfNotPresented = (index: number) => { + this.presElementsMappings.forEach((presElem: PresentationElement, key: Doc) => { + //the order of cases is aligned based on priority + + if (presElem.props.document.hideAfterButton) { + if (this.childrenDocs.indexOf(key) >= index) { + key.opacity = 1; + } + } + if (presElem.props.document.fadeButton) { + if (this.childrenDocs.indexOf(key) >= index) { + key.opacity = 1; + } + } + if (presElem.props.document.hideTillShownButton) { + if (this.childrenDocs.indexOf(key) > index) { + key.opacity = 0; + } + } + }); + } + + /** + * This method makes sure that cursor navigates to the element that + * has the option open and last in the group. If not in the group, and it has + * te option open, navigates to that element. + */ + navigateToElement = async (curDoc: Doc, fromDoc: number) => { + let docToJump: Doc = curDoc; + let willZoom: boolean = false; + + + let presDocs = DocListCast(this.curPresentation.data); + let nextSelected = presDocs.indexOf(curDoc); + let currentDocGroups: Doc[] = []; + for (; nextSelected < presDocs.length - 1; nextSelected++) { + if (!this.presElementsMappings.get(presDocs[nextSelected + 1])!.props.document.groupButton) { + break; + } + currentDocGroups.push(presDocs[nextSelected]); + } + + currentDocGroups.forEach((doc: Doc, index: number) => { + if (this.presElementsMappings.get(doc)!.navButton) { + docToJump = doc; + willZoom = false; + } + if (this.presElementsMappings.get(doc)!.showButton) { + docToJump = doc; + willZoom = true; + } + }); + + //docToJump stayed same meaning, it was not in the group or was the last element in the group + if (docToJump === curDoc) { + //checking if curDoc has navigation open + if (this.presElementsMappings.get(curDoc)!.navButton) { + DocumentManager.Instance.jumpToDocument(curDoc, false); + } else if (this.presElementsMappings.get(curDoc)!.showButton) { + let curScale = DocumentManager.Instance.getScaleOfDocView(this.childrenDocs[fromDoc]); + //awaiting jump so that new scale can be found, since jumping is async + await DocumentManager.Instance.jumpToDocument(curDoc, true); + let newScale = DocumentManager.Instance.getScaleOfDocView(curDoc); + curDoc.viewScale = newScale; + + //saving the scale user was on before zooming in + if (curScale !== 1) { + this.childrenDocs[fromDoc].viewScale = curScale; + } + + } + return; + } + let curScale = DocumentManager.Instance.getScaleOfDocView(this.childrenDocs[fromDoc]); + + //awaiting jump so that new scale can be found, since jumping is async + await DocumentManager.Instance.jumpToDocument(docToJump, willZoom); + let newScale = DocumentManager.Instance.getScaleOfDocView(curDoc); + curDoc.viewScale = newScale; + //saving the scale that user was on + if (curScale !== 1) { + this.childrenDocs[fromDoc].viewScale = curScale; + } + + } + + /** + * Async function that supposedly return the doc that is located at given index. + */ + getDocAtIndex = async (index: number) => { + const list = FieldValue(Cast(this.curPresentation.data, listSpec(Doc))); + if (!list) { + return undefined; + } + if (index < 0 || index >= list.length) { + return undefined; + } + + this.curPresentation.selectedDoc = index; + //awaiting async call to finish to get Doc instance + const doc = await list[index]; + return doc; + } + + /** + * The function that removes a doc from a presentation. It also makes sure to + * do necessary updates to backUps and mappings stored locally. + */ + @action + public RemoveDoc = async (index: number) => { + const value = FieldValue(Cast(this.curPresentation.data, listSpec(Doc))); + if (value) { + let removedDoc = await value.splice(index, 1)[0]; + + //removing the Presentation Element stored for it + this.presElementsMappings.delete(removedDoc); + + } + } + + public removeDocByRef = (doc: Doc) => { + let indexOfDoc = this.childrenDocs.indexOf(doc); + const value = FieldValue(Cast(this.curPresentation.data, listSpec(Doc))); + if (value) { + value.splice(indexOfDoc, 1)[0]; + } + //this.RemoveDoc(indexOfDoc, true); + if (indexOfDoc !== - 1) { + return true; + } + return false; + } + + //The function that is called when a document is clicked or reached through next or back. + //it'll also execute the necessary actions if presentation is playing. + @action + public gotoDocument = async (index: number, fromDoc: number) => { + Doc.UnBrushAllDocs(); + const list = FieldValue(Cast(this.curPresentation.data, listSpec(Doc))); + if (!list) { + return; + } + if (index < 0 || index >= list.length) { + return; + } + this.curPresentation.selectedDoc = index; + + if (!this.presStatus) { + this.presStatus = true; + this.startPresentation(index); + } + + const doc = await list[index]; + if (this.presStatus) { + this.navigateToElement(doc, fromDoc); + this.hideIfNotPresented(index); + this.showAfterPresented(index); + } + } + //Function that sets the store of the children docs. + @action + setChildrenDocs = (docList: Doc[]) => { + this.childrenDocs = docList; + } + + //The function that is called to render the play or pause button depending on + //if presentation is running or not. + renderPlayPauseButton = () => { + if (this.presStatus) { + return <button title="Reset Presentation" className="presentation-button" onClick={this.startOrResetPres}><FontAwesomeIcon icon="stop" /></button>; + } else { + return <button title="Start Presentation From Start" className="presentation-button" onClick={this.startOrResetPres}><FontAwesomeIcon icon="play" /></button>; + } + } + + //The function that starts or resets presentaton functionally, depending on status flag. + @action + startOrResetPres = () => { + if (this.presStatus) { + this.resetPresentation(); + } else { + this.presStatus = true; + this.startPresentation(0); + const current = NumCast(this.curPresentation.selectedDoc); + this.gotoDocument(0, current); + } + this.curPresentation.presStatus = this.presStatus; + } + + //The function that resets the presentation by removing every action done by it. It also + //stops the presentaton. + @action + resetPresentation = () => { + this.childrenDocs.forEach((doc: Doc) => { + doc.opacity = 1; + doc.viewScale = 1; + }); + this.curPresentation.selectedDoc = 0; + this.presStatus = false; + this.curPresentation.presStatus = this.presStatus; + if (this.childrenDocs.length === 0) { + return; + } + DocumentManager.Instance.zoomIntoScale(this.childrenDocs[0], 1); + } + + + //The function that starts the presentation, also checking if actions should be applied + //directly at start. + startPresentation = (startIndex: number) => { + this.presElementsMappings.forEach((component: PresentationElement, doc: Doc) => { + if (component.props.document.hideTillShownButton) { + if (this.childrenDocs.indexOf(doc) > startIndex) { + doc.opacity = 0; + } + + } + if (component.props.document.hideAfterButton) { + if (this.childrenDocs.indexOf(doc) < startIndex) { + doc.opacity = 0; + } + } + if (component.props.document.fadeButton) { + if (this.childrenDocs.indexOf(doc) < startIndex) { + doc.opacity = 0.5; + } + } + + }); + + } + + + /** + * The function that is called to render either select for presentations, or title inputting. + */ + renderSelectOrPresSelection = () => { + if (this.PresTitleInputOpen || this.PresTitleChangeOpen) { + return <input ref={(e) => this.titleInputElement = e!} type="text" className="presentationView-title" placeholder="Enter Name!" onKeyDown={this.submitPresentationTitle} />; + } else { + return (null); + } + } + + /** + * The function that is called on enter press of title input. It gives the + * new presentation the title user entered. If nothing is entered, gives a default title. + */ + @action + submitPresentationTitle = (e: React.KeyboardEvent) => { + if (e.keyCode === 13) { + let presTitle = this.titleInputElement!.value; + this.titleInputElement!.value = ""; + if (this.PresTitleChangeOpen) { + this.PresTitleChangeOpen = false; + this.changePresentationTitle(presTitle); + } + } + } + /** + * The function that is called to change title of presentation to what user entered. + */ + @undoBatch + changePresentationTitle = (newTitle: string) => { + if (newTitle === "") { + return; + } + this.curPresentation.title = newTitle; + } + + addPressElem = (keyDoc: Doc, elem: PresentationElement) => { + this.presElementsMappings.set(keyDoc, elem); + } + + minimize = undoBatch(action(() => { + this.presMode = true; + this.props.addDocTab && this.props.addDocTab(this.props.Document, this.props.DataDoc, "close"); + })); + + specificContextMenu = (e: React.MouseEvent): void => { + ContextMenu.Instance.addItem({ description: "Make Current Presentation", event: action(() => Doc.UserDoc().curPresentation = this.props.Document), icon: "asterisk" }); + } + + render() { + + let width = "100%"; //NumCast(this.curPresentation.width) + return ( + <div className="presentationView-cont" onPointerEnter={action(() => !this.persistOpacity && (this.opacity = 1))} onContextMenu={this.specificContextMenu} + onPointerLeave={action(() => !this.persistOpacity && (this.opacity = 0.4))} + style={{ width: width, opacity: this.opacity, }}> + <div className="presentation-buttons"> + <button title="Back" className="presentation-button" onClick={this.back}><FontAwesomeIcon icon={"arrow-left"} /></button> + {this.renderPlayPauseButton()} + <button title="Next" className="presentation-button" onClick={this.next}><FontAwesomeIcon icon={"arrow-right"} /></button> + <button title="Minimize" className="presentation-button" onClick={this.minimize}><FontAwesomeIcon icon={"eye"} /></button> + </div> + <input + type="checkbox" + onChange={action((e: React.ChangeEvent<HTMLInputElement>) => { + this.persistOpacity = e.target.checked; + this.opacity = this.persistOpacity ? 1 : 0.4; + })} + checked={this.persistOpacity} + style={{ position: "absolute", bottom: 5, left: 5 }} + onPointerEnter={action(() => this.labelOpacity = 1)} + onPointerLeave={action(() => this.labelOpacity = 0)} + /> + <p style={{ position: "absolute", bottom: 1, left: 22, opacity: this.labelOpacity, transition: "0.7s opacity ease" }}>opacity {this.persistOpacity ? "persistent" : "on focus"}</p> + <PresentationViewList + mainDocument={this.curPresentation} + deleteDocument={this.RemoveDoc} + gotoDocument={this.gotoDocument} + PresElementsMappings={this.presElementsMappings} + setChildrenDocs={this.setChildrenDocs} + presStatus={this.presStatus} + removeDocByRef={this.removeDocByRef} + clearElemMap={() => this.presElementsMappings.clear()} + /> + </div> + ); + } + + +}
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