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editManager.js
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editManager.js
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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const vscode = require("vscode");
const Utils = require("./utils");
class PendingEdit {
constructor() {
this.action_list = [];
}
getActionListItemLength(i) {
if (this.action_list[i][0] == "r")
return parseInt(this.action_list[i].substring(1));
return (this.action_list[i].length - 1);
}
splitActionListItem(i, cutpoint) {
if (this.action_list[i][0] == "r") {
let new_item = "r" + (parseInt(this.action_list[i].substring(1)) - cutpoint);
this.action_list[i] = "r" + cutpoint;
this.action_list.splice(i + 1, 0, new_item);
}
if (this.action_list[i][0] == "d") {
let new_item = "d" + (this.action_list[i].substring(1 + cutpoint));
this.action_list[i] = this.action_list[i].substring(0, cutpoint + 1);
this.action_list.splice(i + 1, 0, new_item);
}
if (this.action_list[i][0] == "i") {
let new_item = "i" + (this.action_list[i].substring(1 + cutpoint));
this.action_list[i] = this.action_list[i].substring(0, cutpoint + 1);
this.action_list.splice(i + 1, 0, new_item);
}
}
addEdit(r, d, i) {
console.log("Start Add Edit");
if (this.action_list.length == 0) {
if (r) {
this.action_list.push("r" + r);
}
if (d) {
this.action_list.push("d" + d);
}
if (i) {
this.action_list.push("i" + i);
}
}
else {
let offset = 0;
let index = 0;
if (r) {
let array_split_done = false;
while (!array_split_done) {
if (index >= this.action_list.length) {
this.action_list.push("r" + (r - offset));
array_split_done = true;
}
else if (this.getActionListItemLength(index) > (r - offset)) {
// split
this.splitActionListItem(index, (r - offset));
array_split_done = true;
}
else {
offset += this.getActionListItemLength(index);
index += 1;
}
}
}
if (d) {
index += 1;
this.action_list.splice(index, 0, ("d" + d));
let remaining_delete_length = d.length;
let index_offset = 1;
while (remaining_delete_length > this.getActionListItemLength(index + index_offset)) {
this.action_list.splice(index + index_offset, 1);
remaining_delete_length -= this.getActionListItemLength(index + index_offset);
index_offset += 1;
}
if (remaining_delete_length > 0) {
if (this.action_list[index + index_offset][0] == 'r') {
this.action_list[index + index_offset] = "r" + (parseInt(this.action_list[index + index_offset].substring(1)) - remaining_delete_length);
}
else { // TODO: how does 2x 'd' work here?
this.action_list[index + index_offset] = this.action_list[index + index_offset][0] + this.action_list[index + index_offset].substring(remaining_delete_length + 1);
}
}
}
if (i) {
index += 1;
this.action_list.splice(index, 0, ("i" + i));
}
}
let index = 0;
while (index < this.action_list.length) {
if (this.action_list[index] == "r0") {
this.action_list.splice(index, 1); // remove r0's
}
else {
// TODO: check for double "i" or double "d"
index += 1;
}
}
}
getEditList(prev_doc) {
let ret = this.action_list;
let remaining_chars = prev_doc.length;
this.action_list.forEach(item => {
if (item[0] == "r") {
remaining_chars -= parseInt(item.substring(1));
}
else if (item[0] == "d") {
remaining_chars -= (item.length - 1);
}
});
if (remaining_chars > 0) {
ret.push("r" + remaining_chars); // TODO: This is broken
}
else if (remaining_chars < 0) {
console.warn("Remaining chars = " + remaining_chars);
}
return ret;
}
empty() {
this.action_list = [];
}
isEmpty() {
return this.action_list.length == 0;
}
}
class EditManager {
constructor(eventEmitter, websocketProvider) {
this.eventEmitter = eventEmitter;
this.websocketProvider = websocketProvider;
this.pending_edit = new PendingEdit();
this.last_unacknowledged_edit = null;
this.lastKnownRemoteDocumentText = {};
this.lastKnownLocalDocumentText = {};
this.recent_edits = {};
this.recent_edits_iterator = 0;
eventEmitter.on('ack', (ack) => {
if (this.last_unacknowledged_edit != null) {
if (ack >= this.last_unacknowledged_edit) {
this.last_unacknowledged_edit = null;
this.sendPendingEdits();
}
}
});
}
sendPendingEdits() {
if (this.pending_edit.isEmpty()) {
return;
}
console.log("SENDING PENDING EDITS");
setTimeout(() => {
let prev_text = this.lastKnownRemoteDocumentText[this.doc_path];
let edit = this.pending_edit.getEditList(prev_text);
this.pending_edit.empty();
this.revNum += 1;
let doc = vscode.window.activeTextEditor.document; // TODO: Not compensating for multi-doc
let selection = vscode.window.activeTextEditor.selection;
let seq = this.websocketProvider.send_ch4_message(["call", "collab", "send", [this.vfsid, { "type": "EDIT_UPDATE", "data": { "docId": this.doc_path, "op": edit, "revNum": this.revNum, "selection": [
selection.start.line,
selection.start.character,
selection.end.line,
selection.end.character,
selection.isReversed
] } }]]);
this.last_unacknowledged_edit = seq;
this.lastKnownRemoteDocumentText[this.doc_path] = this.lastKnownLocalDocumentText[this.doc_path];
}, 1); // TODO: Fix bad selection hack
}
queuePendingEdit(r, d, i) {
this.pending_edit.addEdit(parseInt(r), d, i);
}
addRemoteEdit(edit) {
this.recent_edits[this.recent_edits_iterator] = edit;
setTimeout((recent_edits_iterator) => {
delete this.recent_edits[recent_edits_iterator];
}, 100, this.recent_edits_iterator); // TODO: Check/optimize this timeout
this.recent_edits_iterator += 1;
}
processTextDocumentChange(change, evt) {
if (Object.keys(this.recent_edits).length === 0 && this.recent_edits.constructor === Object) {
; // no recent edits
}
else {
for (var i in this.recent_edits) {
let text_edits = this.recent_edits[i];
text_edits.forEach(textedit => {
if (textedit.range.contains(evt.document.positionAt(change.rangeOffset))) {
console.log("RECENT EDIT DETECTED, IGNORING ONDIDCHANGE TRIGGER");
delete this.recent_edits[i];
return;
}
});
}
}
console.log("NON REMOTE EDIT");
let path = Utils.GetShortFilePath(evt.document);
this.doc_path = path; // TODO: Check for changes to this
let prevText = this.lastKnownLocalDocumentText[path];
if (prevText === undefined) {
console.warn("undefined lastKnownLocalDocumentText for: " + path);
console.log(this.lastKnownLocalDocumentText);
return;
}
this.lastKnownLocalDocumentText[path] = evt.document.getText();
let delText = prevText.substring(change.rangeOffset, change.rangeOffset + change.rangeLength);
this.queuePendingEdit((change.rangeOffset != 0 ? change.rangeOffset.toString() : null), (change.rangeLength > 0 ? delText : null), (change.text.length > 0 ? change.text : null));
console.log("Queued pending");
if (this.last_unacknowledged_edit == null) {
this.sendPendingEdits();
}
}
}
exports.EditManager = EditManager;