mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-12-25 01:20:30 +00:00
158 lines
4.4 KiB
JavaScript
Executable File
158 lines
4.4 KiB
JavaScript
Executable File
/*\
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title: $:/plugins/tiddlywiki/codemirror/engine.js
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type: application/javascript
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module-type: library
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Text editor engine based on a CodeMirror instance
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\*/
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(function(){
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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var CODEMIRROR_OPTIONS = "$:/config/CodeMirror",
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HEIGHT_VALUE_TITLE = "$:/config/TextEditor/EditorHeight/Height"
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// Install CodeMirror
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if($tw.browser && !window.CodeMirror) {
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window.CodeMirror = require("$:/plugins/tiddlywiki/codemirror/lib/codemirror.js");
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// Install required CodeMirror plugins
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var configOptions = $tw.wiki.getTiddlerData(CODEMIRROR_OPTIONS,{}),
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req = configOptions.require;
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if(req) {
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if($tw.utils.isArray(req)) {
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for(var index=0; index<req.length; index++) {
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require(req[index]);
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}
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} else {
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require(req);
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}
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}
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}
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function CodeMirrorEngine(options) {
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// Save our options
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var self = this;
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options = options || {};
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this.widget = options.widget;
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this.value = options.value;
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this.parentNode = options.parentNode;
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this.nextSibling = options.nextSibling;
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// Create the wrapper DIV
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this.domNode = this.widget.document.createElement("div");
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if(this.widget.editClass) {
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this.domNode.className = this.widget.editClass;
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}
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this.domNode.style.display = "inline-block";
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this.parentNode.insertBefore(this.domNode,this.nextSibling);
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this.widget.domNodes.push(this.domNode);
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// Get the configuration options for the CodeMirror object
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var config = $tw.wiki.getTiddlerData(CODEMIRROR_OPTIONS,{}).configuration || {};
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if(!("lineWrapping" in config)) {
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config.lineWrapping = true;
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}
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if(!("lineNumbers" in config)) {
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config.lineNumbers = true;
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}
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config.mode = options.type;
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config.value = options.value;
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// Create the CodeMirror instance
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this.cm = window.CodeMirror(function(cmDomNode) {
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// Note that this is a synchronous callback that is called before the constructor returns
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self.domNode.appendChild(cmDomNode);
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},config);
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// Set up a change event handler
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this.cm.on("change",function() {
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self.widget.saveChanges(self.getText());
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});
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this.cm.on("drop",function(cm,event) {
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event.stopPropagation(); // Otherwise TW's dropzone widget sees the drop event
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return false;
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});
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this.cm.on("keydown",function(cm,event) {
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return self.widget.handleKeydownEvent.call(self.widget,event);
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});
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}
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/*
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Set the text of the engine if it doesn't currently have focus
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*/
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CodeMirrorEngine.prototype.setText = function(text,type) {
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this.cm.setOption("mode",type);
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if(!this.cm.hasFocus()) {
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this.cm.setValue(text);
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}
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};
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/*
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Get the text of the engine
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*/
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CodeMirrorEngine.prototype.getText = function() {
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return this.cm.getValue();
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};
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/*
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Fix the height of textarea to fit content
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*/
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CodeMirrorEngine.prototype.fixHeight = function() {
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if(this.widget.editAutoHeight) {
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// Resize to fit
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this.cm.setSize(null,null);
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} else {
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var fixedHeight = parseInt(this.widget.wiki.getTiddlerText(HEIGHT_VALUE_TITLE,"400px"),10);
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fixedHeight = Math.max(fixedHeight,20);
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this.cm.setSize(null,fixedHeight);
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}
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};
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/*
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Focus the engine node
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*/
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CodeMirrorEngine.prototype.focus = function() {
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this.cm.focus();
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}
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/*
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Create a blank structure representing a text operation
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*/
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CodeMirrorEngine.prototype.createTextOperation = function() {
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var selections = this.cm.listSelections();
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if(selections.length > 0) {
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var anchorPos = this.cm.indexFromPos(selections[0].anchor),
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headPos = this.cm.indexFromPos(selections[0].head);
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}
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var operation = {
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text: this.cm.getValue(),
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selStart: Math.min(anchorPos,headPos),
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selEnd: Math.max(anchorPos,headPos),
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cutStart: null,
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cutEnd: null,
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replacement: null,
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newSelStart: null,
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newSelEnd: null
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};
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operation.selection = operation.text.substring(operation.selStart,operation.selEnd);
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return operation;
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};
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/*
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Execute a text operation
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*/
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CodeMirrorEngine.prototype.executeTextOperation = function(operation) {
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// Perform the required changes to the text area and the underlying tiddler
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var newText = operation.text;
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if(operation.replacement !== null) {
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this.cm.replaceRange(operation.replacement,this.cm.posFromIndex(operation.cutStart),this.cm.posFromIndex(operation.cutEnd));
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this.cm.setSelection(this.cm.posFromIndex(operation.newSelStart),this.cm.posFromIndex(operation.newSelEnd));
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newText = operation.text.substring(0,operation.cutStart) + operation.replacement + operation.text.substring(operation.cutEnd);
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}
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this.cm.focus();
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return newText;
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};
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exports.CodeMirrorEngine = CodeMirrorEngine;
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})();
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