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import { Range } from 'monaco-editor';
import { throttle } from 'underscore';
import DirtyDiffWorker from './diff_worker';
import Disposable from '../common/disposable';
export const getDiffChangeType = change => {
if (change.modified) {
return 'modified';
} else if (change.added) {
return 'added';
} else if (change.removed) {
return 'removed';
}
return '';
};
export const getDecorator = change => ({
range: new Range(change.lineNumber, 1, change.endLineNumber, 1),
options: {
isWholeLine: true,
linesDecorationsClassName: `dirty-diff dirty-diff-${getDiffChangeType(change)}`,
},
});
export default class DirtyDiffController {
constructor(modelManager, decorationsController) {
this.disposable = new Disposable();
this.models = new Map();
this.editorSimpleWorker = null;
this.modelManager = modelManager;
this.decorationsController = decorationsController;
this.dirtyDiffWorker = new DirtyDiffWorker();
this.throttledComputeDiff = throttle(this.computeDiff, 250);
this.decorate = this.decorate.bind(this);
this.dirtyDiffWorker.addEventListener('message', this.decorate);
}
attachModel(model) {
if (this.models.has(model.url)) return;
model.onChange(() => this.throttledComputeDiff(model));
model.onDispose(() => {
this.decorationsController.removeDecorations(model);
this.models.delete(model.url);
});
this.models.set(model.url, model);
}
computeDiff(model) {
this.dirtyDiffWorker.postMessage({
path: model.path,
originalContent: model.getOriginalModel().getValue(),
newContent: model.getModel().getValue(),
});
}
reDecorate(model) {
if (this.decorationsController.hasDecorations(model)) {
this.decorationsController.decorate(model);
} else {
this.computeDiff(model);
}
}
decorate({ data }) {
const decorations = data.changes.map(change => getDecorator(change));
const model = this.modelManager.getModel(data.path);
this.decorationsController.addDecorations(model, 'dirtyDiff', decorations);
}
dispose() {
this.disposable.dispose();
this.models.clear();
this.dirtyDiffWorker.removeEventListener('message', this.decorate);
this.dirtyDiffWorker.terminate();
}
}
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