146 lines
5.5 KiB
JavaScript
146 lines
5.5 KiB
JavaScript
ace.define("ace/ext/rtl",["require","exports","module","ace/editor","ace/config"], function(require, exports, module){/**
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* ## Right-to-Left (RTL) text support extension
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*
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* Provides bidirectional text support enabling proper rendering and editing of RTL languages such as Arabic, Hebrew,
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* and Persian. Handles text direction detection, cursor positioning, and ensures correct visual behavior for mixed
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* LTR/RTL content. Includes keyboard shortcuts for manual text direction control and automatic
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* RLE (Right-to-Left Embedding) marker management.
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*
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* **Configuration Options:**
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* - `rtlText`: Enable automatic RTL text detection and handling
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* - `rtl`: Force RTL direction for the entire editor
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*
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* **Keyboard Shortcuts:**
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* - `Ctrl-Alt-Shift-L` (Win) / `Cmd-Alt-Shift-L` (Mac): Force left-to-right direction
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* - `Ctrl-Alt-Shift-R` (Win) / `Cmd-Alt-Shift-R` (Mac): Force right-to-left direction
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*
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* **Usage:**
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* ```javascript
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* editor.setOptions({
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* rtlText: true, // Enable automatic RTL detection
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* rtl: false // Or force RTL direction
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* });
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* ```
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*
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* @module
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*/
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"use strict";
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var commands = [{
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name: "leftToRight",
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bindKey: { win: "Ctrl-Alt-Shift-L", mac: "Command-Alt-Shift-L" },
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exec: function (editor) {
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editor.session.$bidiHandler.setRtlDirection(editor, false);
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},
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readOnly: true
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}, {
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name: "rightToLeft",
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bindKey: { win: "Ctrl-Alt-Shift-R", mac: "Command-Alt-Shift-R" },
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exec: function (editor) {
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editor.session.$bidiHandler.setRtlDirection(editor, true);
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},
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readOnly: true
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}];
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var Editor = require("../editor").Editor;
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require("../config").defineOptions(Editor.prototype, "editor", {
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rtlText: {
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set: function (val) {
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if (val) {
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this.on("change", onChange);
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this.on("changeSelection", onChangeSelection);
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this.renderer.on("afterRender", updateLineDirection);
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this.commands.on("exec", onCommandEmitted);
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this.commands.addCommands(commands);
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}
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else {
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this.off("change", onChange);
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this.off("changeSelection", onChangeSelection);
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this.renderer.off("afterRender", updateLineDirection);
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this.commands.off("exec", onCommandEmitted);
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this.commands.removeCommands(commands);
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clearTextLayer(this.renderer);
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}
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this.renderer.updateFull();
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}
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},
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rtl: {
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set: function (val) {
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this.session.$bidiHandler.$isRtl = val;
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if (val) {
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this.setOption("rtlText", false);
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this.renderer.on("afterRender", updateLineDirection);
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this.session.$bidiHandler.seenBidi = true;
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}
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else {
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this.renderer.off("afterRender", updateLineDirection);
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clearTextLayer(this.renderer);
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}
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this.renderer.updateFull();
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}
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}
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});
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function onChangeSelection(e, editor) {
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var lead = editor.getSelection().lead;
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if (editor.session.$bidiHandler.isRtlLine(lead.row)) {
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if (lead.column === 0) {
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if (editor.session.$bidiHandler.isMoveLeftOperation && lead.row > 0) {
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editor.getSelection().moveCursorTo(lead.row - 1, editor.session.getLine(lead.row - 1).length);
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}
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else {
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if (editor.getSelection().isEmpty())
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lead.column += 1;
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else
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lead.setPosition(lead.row, lead.column + 1);
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}
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}
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}
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}
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function onCommandEmitted(commadEvent) {
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commadEvent.editor.session.$bidiHandler.isMoveLeftOperation = /gotoleft|selectleft|backspace|removewordleft/.test(commadEvent.command.name);
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}
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function onChange(delta, editor) {
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var session = editor.session;
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session.$bidiHandler.currentRow = null;
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if (session.$bidiHandler.isRtlLine(delta.start.row) && delta.action === 'insert' && delta.lines.length > 1) {
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for (var row = delta.start.row; row < delta.end.row; row++) {
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if (session.getLine(row + 1).charAt(0) !== session.$bidiHandler.RLE)
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session.doc.$lines[row + 1] = session.$bidiHandler.RLE + session.getLine(row + 1);
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}
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}
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}
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function updateLineDirection(e, renderer) {
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var session = renderer.session;
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var $bidiHandler = session.$bidiHandler;
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var cells = renderer.$textLayer.$lines.cells;
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var width = renderer.layerConfig.width - renderer.layerConfig.padding + "px";
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cells.forEach(function (cell) {
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var style = cell.element.style;
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if ($bidiHandler && $bidiHandler.isRtlLine(cell.row)) {
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style.direction = "rtl";
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style.textAlign = "right";
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style.width = width;
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}
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else {
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style.direction = "";
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style.textAlign = "";
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style.width = "";
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}
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});
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}
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function clearTextLayer(renderer) {
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var lines = renderer.$textLayer.$lines;
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lines.cells.forEach(clear);
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lines.cellCache.forEach(clear);
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function clear(cell) {
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var style = cell.element.style;
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style.direction = style.textAlign = style.width = "";
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}
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}
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}); (function() {
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ace.require(["ace/ext/rtl"], function(m) {
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if (typeof module == "object" && typeof exports == "object" && module) {
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module.exports = m;
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}
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});
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})();
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