fix(aio): left align code in aio-code components

This commit is contained in:
Peter Bacon Darwin 2017-04-10 22:14:40 +01:00 committed by Hans
parent 3ced940b5a
commit 9037593ab8
2 changed files with 21 additions and 1 deletions

View File

@ -105,6 +105,14 @@ describe('CodeComponent', () => {
expect(lis.length).toBe(0, 'should be no linenums');
});
it('should remove common indentation from the code before rendering', () => {
hostComponent.linenums = false;
hostComponent.code = ' abc\n def\n ghi\n\n jkl\n';
fixture.detectChanges();
const codeContent = codeComponentDe.nativeElement.querySelector('code').innerText;
expect(codeContent).toEqual('abc\n def\nghi\n\njkl');
});
it('should trim whitespace from the code before rendering', () => {
hostComponent.linenums = false;
hostComponent.code = '\n\n\n' + multiLineCode + '\n\n\n';

View File

@ -70,7 +70,7 @@ export class CodeComponent implements OnChanges {
private logger: Logger) {}
ngOnChanges() {
this.code = this.code && this.code.trim();
this.code = this.code && leftAlign(this.code);
if (!this.code) {
this.setCodeHtml('<p class="code-missing">The code sample is missing.</p>');
@ -118,3 +118,15 @@ export class CodeComponent implements OnChanges {
(this.code.match(/\n/g) || []).length > 1 : linenums;
}
}
function leftAlign(text) {
let indent = Number.MAX_VALUE;
const lines = text.split('\n');
lines.forEach(line => {
const lineIndent = line.search(/\S/);
if (lineIndent !== -1) {
indent = Math.min(lineIndent, indent);
}
});
return lines.map(line => line.substr(indent)).join('\n').trim();
}