overleaf/services/web/frontend/js/vendor/ace-1.4.12/ext-rtl.js

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ace.define("ace/ext/rtl",[], function(require, exports, module) {
"use strict";
var commands = [{
name: "leftToRight",
bindKey: { win: "Ctrl-Alt-Shift-L", mac: "Command-Alt-Shift-L" },
exec: function(editor) {
editor.session.$bidiHandler.setRtlDirection(editor, false);
},
readOnly: true
}, {
name: "rightToLeft",
bindKey: { win: "Ctrl-Alt-Shift-R", mac: "Command-Alt-Shift-R" },
exec: function(editor) {
editor.session.$bidiHandler.setRtlDirection(editor, true);
},
readOnly: true
}];
var Editor = require("../editor").Editor;
require("../config").defineOptions(Editor.prototype, "editor", {
rtlText: {
set: function(val) {
if (val) {
this.on("change", onChange);
this.on("changeSelection", onChangeSelection);
this.renderer.on("afterRender", updateLineDirection);
this.commands.on("exec", onCommandEmitted);
this.commands.addCommands(commands);
} else {
this.off("change", onChange);
this.off("changeSelection", onChangeSelection);
this.renderer.off("afterRender", updateLineDirection);
this.commands.off("exec", onCommandEmitted);
this.commands.removeCommands(commands);
clearTextLayer(this.renderer);
}
this.renderer.updateFull();
}
},
rtl: {
set: function(val) {
this.session.$bidiHandler.$isRtl = val;
if (val) {
this.setOption("rtlText", false);
this.renderer.on("afterRender", updateLineDirection);
this.session.$bidiHandler.seenBidi = true;
} else {
this.renderer.off("afterRender", updateLineDirection);
clearTextLayer(this.renderer);
}
this.renderer.updateFull();
}
}
});
function onChangeSelection(e, editor) {
var lead = editor.getSelection().lead;
if (editor.session.$bidiHandler.isRtlLine(lead.row)) {
if (lead.column === 0) {
if (editor.session.$bidiHandler.isMoveLeftOperation && lead.row > 0) {
editor.getSelection().moveCursorTo(lead.row - 1, editor.session.getLine(lead.row - 1).length);
} else {
if (editor.getSelection().isEmpty())
lead.column += 1;
else
lead.setPosition(lead.row, lead.column + 1);
}
}
}
}
function onCommandEmitted(commadEvent) {
commadEvent.editor.session.$bidiHandler.isMoveLeftOperation = /gotoleft|selectleft|backspace|removewordleft/.test(commadEvent.command.name);
}
function onChange(delta, editor) {
var session = editor.session;
session.$bidiHandler.currentRow = null;
if (session.$bidiHandler.isRtlLine(delta.start.row) && delta.action === 'insert' && delta.lines.length > 1) {
for (var row = delta.start.row; row < delta.end.row; row++) {
if (session.getLine(row + 1).charAt(0) !== session.$bidiHandler.RLE)
session.doc.$lines[row + 1] = session.$bidiHandler.RLE + session.getLine(row + 1);
}
}
}
function updateLineDirection(e, renderer) {
var session = renderer.session;
var $bidiHandler = session.$bidiHandler;
var cells = renderer.$textLayer.$lines.cells;
var width = renderer.layerConfig.width - renderer.layerConfig.padding + "px";
cells.forEach(function(cell) {
var style = cell.element.style;
if ($bidiHandler && $bidiHandler.isRtlLine(cell.row)) {
style.direction = "rtl";
style.textAlign = "right";
style.width = width;
} else {
style.direction = "";
style.textAlign = "";
style.width = "";
}
});
}
function clearTextLayer(renderer) {
var lines = renderer.$textLayer.$lines;
lines.cells.forEach(clear);
lines.cellCache.forEach(clear);
function clear(cell) {
var style = cell.element.style;
style.direction = style.textAlign = style.width = "";
}
}
}); (function() {
ace.require(["ace/ext/rtl"], function(m) {
if (typeof module == "object" && typeof exports == "object" && module) {
module.exports = m;
}
});
})();