@wbx/view-codemirror-editor/codemirror.js

CodeMirror as Webix view

webix.protoUI({
	name: "codemirror-editor",
	defaults: {
		mode: "javascript",
		lineNumbers: true,
		matchBrackets: true,
		theme: "default"
	},
	$init: function (config) {
		this.$view.innerHTML = "<textarea style='width:100%;height:100%;'></textarea>";
		this._textarea = this.$view.firstChild;
		this._waitEditor = webix.promise.defer();
		this.$ready.push(this._render_cm_editor);
	},
	complex_types: {
		php: {
			mode: ["xml", "javascript", "css", "htmlmixed", "clike"]
		},
		htmlembedded: {
			mode: ["xml", "javascript", "css", "htmlmixed"],
			addon: ["mode/multiplex"]
		},
		htmlmixed: {
			mode: ["xml", "javascript", "css"]
		},
		dockerfile: {
			addon: ["mode/simple"]
		}
	},
	_render_cm_editor: function () {

		if (this.config.cdn === false) {
			this._render_when_ready();
			return;
		};

		var cdn = this.config.cdn || "https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.48.4/";
		// basic
		var sources = [
			cdn + "/codemirror.css",
			cdn + "/codemirror.js"
		];

		// mode
		var mode = this.config.mode ? this.config.mode : "javascript";
		// complex modes based on others: htmlmixed, htmlembedded, php
		var extras = this.complex_types[mode];
		if (extras) {
			if (extras["mode"]) {
				extras["mode"].forEach(function (name) {
					var path = "/mode/" + name + "/" + name + ".js";
					sources.push(cdn + path);
				});
			};
			if (extras["addon"]) {
				extras["addon"].forEach(function (name) {
					var path = "/addon/" + name + ".js";
					sources.push(cdn + path);
				});
			};
		};
		sources.push(cdn + "/mode/" + mode + "/" + mode + ".js");

		// theme
		if (this.config.theme && this.config.theme !== "default") {
			sources.push(cdn + "/theme/" + this.config.theme + ".css")
		};

		// matchbrackets add-on
		if (this.config.matchBrackets) {
			sources.push(cdn + "/addon/edit/matchbrackets.js")
		};

		webix.require(sources)
			.then(webix.bind(this._render_when_ready, this))
			.catch(function (e) {
				console.log(e);
			});
	},
	_render_when_ready: function () {
		this._editor = CodeMirror.fromTextArea(this._textarea, {
			mode: this.config.mode,
			lineNumbers: this.config.lineNumbers,
			matchBrackets: this.config.matchBrackets,
			theme: this.config.theme
		});

		this._waitEditor.resolve(this._editor);

		this.setValue(this.config.value);
		if (this._focus_await)
			this.focus();
	},
	_set_inner_size: function () {
		if (!this._editor || !this.$width) return;

		this._updateScrollSize();
		this._editor.scrollTo(0, 0); //force repaint, mandatory for IE
	},
	_updateScrollSize: function () {
		var box = this._editor.getWrapperElement();
		var height = (this.$height || 0) + "px";

		box.style.height = height;
		box.style.width = (this.$width || 0) + "px";

		var scroll = this._editor.getScrollerElement();
		if (scroll.style.height != height) {
			scroll.style.height = height;
			this._editor.refresh();
		}
	},
	$setSize: function (x, y) {
		if (webix.ui.view.prototype.$setSize.call(this, x, y)) {
			this._set_inner_size();
		}
	},
	setValue: function (value) {
		if (!value && value !== 0)
			value = "";

		this.config.value = value;
		if (this._editor) {
			this._editor.setValue(value);
			//by default - clear editor's undo history when setting new value
			if (!this.config.preserveUndoHistory)
				this._editor.clearHistory();
			this._updateScrollSize();
		}
	},
	getValue: function () {
		return this._editor ? this._editor.getValue() : this.config.value;
	},
	focus: function () {
		this._focus_await = true;
		if (this._editor)
			this._editor.focus();
	},
	getEditor: function (waitEditor) {
		return waitEditor ? this._waitEditor : this._editor;
	},
	//undo, redo, etc
	undo: function () {
		this._editor.undo();
	},
	redo: function () {
		this._editor.redo();
	},
	undoLength: function () {
		return this._editor.historySize().undo;
	}
}, webix.ui.view);