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betterFoldingDecorator.ts
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betterFoldingDecorator.ts
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import { DecorationRenderOptions, Disposable, TextEditor, window } from "vscode";
export default abstract class BetterFoldingDecorator extends Disposable {
private timeout: NodeJS.Timer | undefined = undefined;
constructor() {
super(() => this.dispose());
}
public triggerUpdateDecorations(editor?: TextEditor) {
if (!this.timeout) {
this.updateDecorations(editor);
this.timeout = setTimeout(() => {
clearTimeout(this.timeout);
this.timeout = undefined;
}, 100);
}
}
private updateDecorations(editor?: TextEditor) {
if (editor) this.updateEditorDecorations(editor);
else {
for (const editor of window.visibleTextEditors) {
this.updateEditorDecorations(editor);
}
}
}
protected abstract updateEditorDecorations(editor: TextEditor): void;
//This is how Better Folding is able to provide custom collapsedText.
protected newDecorationOptions(contentText: string): DecorationRenderOptions {
return {
textDecoration: "none; display:none;", //Hides the folded text
before: {
//Apparently if you add width and height (any values), the text will be clickable
width: "0",
height: "0",
contentText,
color: "rgba(255, 255, 255, 0.5)", //TODO: Get this from the theme
margin: `0 -${90}% 0 0`, //Hides the original collapsed text '…'
textDecoration: "none; cursor: pointer !important;",
},
};
}
}