monaco-editor
Version:
A browser based code editor
109 lines (108 loc) • 5.24 kB
JavaScript
/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import { Position } from '../core/position.js';
import { PrefixSumComputer } from '../viewModel/prefixSumComputer.js';
var MirrorTextModel = /** @class */ (function () {
function MirrorTextModel(uri, lines, eol, versionId) {
this._uri = uri;
this._lines = lines;
this._eol = eol;
this._versionId = versionId;
this._lineStarts = null;
}
MirrorTextModel.prototype.dispose = function () {
this._lines.length = 0;
};
MirrorTextModel.prototype.getText = function () {
return this._lines.join(this._eol);
};
MirrorTextModel.prototype.onEvents = function (e) {
if (e.eol && e.eol !== this._eol) {
this._eol = e.eol;
this._lineStarts = null;
}
// Update my lines
var changes = e.changes;
for (var i = 0, len = changes.length; i < len; i++) {
var change = changes[i];
this._acceptDeleteRange(change.range);
this._acceptInsertText(new Position(change.range.startLineNumber, change.range.startColumn), change.text);
}
this._versionId = e.versionId;
};
MirrorTextModel.prototype._ensureLineStarts = function () {
if (!this._lineStarts) {
var eolLength = this._eol.length;
var linesLength = this._lines.length;
var lineStartValues = new Uint32Array(linesLength);
for (var i = 0; i < linesLength; i++) {
lineStartValues[i] = this._lines[i].length + eolLength;
}
this._lineStarts = new PrefixSumComputer(lineStartValues);
}
};
/**
* All changes to a line's text go through this method
*/
MirrorTextModel.prototype._setLineText = function (lineIndex, newValue) {
this._lines[lineIndex] = newValue;
if (this._lineStarts) {
// update prefix sum
this._lineStarts.changeValue(lineIndex, this._lines[lineIndex].length + this._eol.length);
}
};
MirrorTextModel.prototype._acceptDeleteRange = function (range) {
if (range.startLineNumber === range.endLineNumber) {
if (range.startColumn === range.endColumn) {
// Nothing to delete
return;
}
// Delete text on the affected line
this._setLineText(range.startLineNumber - 1, this._lines[range.startLineNumber - 1].substring(0, range.startColumn - 1)
+ this._lines[range.startLineNumber - 1].substring(range.endColumn - 1));
return;
}
// Take remaining text on last line and append it to remaining text on first line
this._setLineText(range.startLineNumber - 1, this._lines[range.startLineNumber - 1].substring(0, range.startColumn - 1)
+ this._lines[range.endLineNumber - 1].substring(range.endColumn - 1));
// Delete middle lines
this._lines.splice(range.startLineNumber, range.endLineNumber - range.startLineNumber);
if (this._lineStarts) {
// update prefix sum
this._lineStarts.removeValues(range.startLineNumber, range.endLineNumber - range.startLineNumber);
}
};
MirrorTextModel.prototype._acceptInsertText = function (position, insertText) {
if (insertText.length === 0) {
// Nothing to insert
return;
}
var insertLines = insertText.split(/\r\n|\r|\n/);
if (insertLines.length === 1) {
// Inserting text on one line
this._setLineText(position.lineNumber - 1, this._lines[position.lineNumber - 1].substring(0, position.column - 1)
+ insertLines[0]
+ this._lines[position.lineNumber - 1].substring(position.column - 1));
return;
}
// Append overflowing text from first line to the end of text to insert
insertLines[insertLines.length - 1] += this._lines[position.lineNumber - 1].substring(position.column - 1);
// Delete overflowing text from first line and insert text on first line
this._setLineText(position.lineNumber - 1, this._lines[position.lineNumber - 1].substring(0, position.column - 1)
+ insertLines[0]);
// Insert new lines & store lengths
var newLengths = new Uint32Array(insertLines.length - 1);
for (var i = 1; i < insertLines.length; i++) {
this._lines.splice(position.lineNumber + i - 1, 0, insertLines[i]);
newLengths[i - 1] = insertLines[i].length + this._eol.length;
}
if (this._lineStarts) {
// update prefix sum
this._lineStarts.insertValues(position.lineNumber, newLengths);
}
};
return MirrorTextModel;
}());
export { MirrorTextModel };