How to Access codemirror text area value in Angular2 Component?

Question

I am trying to link codemirror with Angular 2 (TypeScript) . Right now ,I am able to display CodeEditor using a codearea custom directive ,which dynamically loads a script file

Answer 1

I use it a little bit differently but maybe it will help you. Basiaclly in ngAfterViewInit I create code mirror instance using elementRef:

this.cm = CodeMirror(this.elementRef.nativeElement, options);

then in the onChange event:

this.cm.on('change', (editor: CodeMirror.Editor) => {
  editor.getDoc().getValue();
});

If you don't want to use onChange, you can always get the value from code mirror instance, eg.

cmInstance.getEditor().getDoc().getValue()

Answer 2

You can use ng2-codemirror

Install

npm install ng2-codemirror --save

Setup

systemjs.config.js

/**
 * System configuration for Angular samples
 * Adjust as necessary for your application needs.
 */
(function (global) {
    var data = {
        paths: {
            // paths serve as alias
            'npm:': '/node_modules/'
        },
        // map tells the System loader where to look for things
        map: {
            // our app is within the app folder
            app: '/Template/js/kpxl/app',

            // angular bundles
            '@angular/core': 'npm:@angular/core/bundles/core.umd.js',
            '@angular/common': 'npm:@angular/common/bundles/common.umd.js',
            '@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
            '@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
            '@angular/platform-browser-dynamic':
                'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
            '@angular/http': 'npm:@angular/http/bundles/http.umd.js',
            '@angular/router': 'npm:@angular/router/bundles/router.umd.js',
            '@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',

            //Add these code mirror packages
            'ng2-codemirror': 'npm:ng2-codemirror',
            'codemirror': 'npm:codemirror',
        },
        // packages tells the System loader how to load when no filename and/or no extension
        packages: {
            codemirror: {
                main: 'lib/codemirror.js',
                defaultExtension: 'js'
            }
        }
    };
    data.packages['ng2-codemirror'] = { main: 'lib/index.js', defaultExtension: 'js' };
    System.config(data);
})(this);

Use Sample

Include CodeMirror css files in your page

<link href="/node_modules/codemirror/lib/codemirror.css" rel="stylesheet" />
<link href="/node_modules/codemirror/theme/ambiance.css" rel="stylesheet" />

Include CodemirrorModule in your main module :

import { CodemirrorModule } from 'ng2-codemirror';

@NgModule({
  // ... 
  imports:      [
    CodemirrorModule
  ],
  // ... 
})
export class AppModule { }

---

Use in your any Component.

import { Component } from 'angular2/core';

@Component({
  selector: 'sample',
  template: `
    <codemirror [(ngModel)]="code"
      [config]="{...}"
      (focus)="onFocus()"
      (blur)="onBlur()">
    </codemirror>
  `
})
export class Sample{
  constructor(){
    this.code = `// Some code...`;
  }
}