我想为Monaco Editor 0.8.3实现一个自定义的CompletionItemProvider,即从RESTful Web服务获取完成建议。为此,我想使用jQuery 3.2.1。
monaco.languages.CompletionItemProvider
接口的类。CompletionItem[]
方法返回provideCompletionItems()
。因此我想我必须返回一个monaco.Thenable<monaco.languages.CompletionItem[]>
- 对象。Thenable
非常稀疏。我想,monaco.Promise
类是Thenable
接口的一种默认实现。正如我发现one example using this class,我试了一下...... 以下是相关代码(以下是完整代码)
return new monaco.Promise<monaco.languages.CompletionItem[]>(function (c, e, p) {
req = $.getJSON("/codeeditorapi/objectcompletions/" + objAndProp[0]);
req.done(function (data) {
console.log("objectcompletions c(data) with " + data);
c(data);
});
req.fail((data) => e(data));
}, function () {
req.abort();
});
现在是班级的完整代码
class MMSObjectModelCompletionProvider implements monaco.languages.CompletionItemProvider
{
private PVAN:string = "v";//PlantVariableAccessor Name
public provideCompletionItems(model: monaco.editor.IReadOnlyModel, position: monaco.Position, token: monaco.CancellationToken): monaco.Thenable<monaco.languages.CompletionItem[]> | monaco.languages.CompletionItem[]{
var line = model.getValueInRange({ startLineNumber: position.lineNumber, startColumn: 1, endLineNumber: position.lineNumber, endColumn: position.column });
let pos = line.lastIndexOf(this.PVAN+".");
if (pos < 0 || line.length < pos + this.PVAN.length+1) //+1 for the dot behind
{
return [];
}
let objAndProp: string[] = line.substr(pos + this.PVAN.length + 1).split(".");
let ret: monaco.languages.CompletionItem[];
var req: JQueryXHR;
switch (objAndProp.length)
{
case 3:
//Only append the value
return [
{
label: "Value",
kind: monaco.languages.CompletionItemKind.Property,
detail: "Access Value of plant variable",
},
];
case 2:
//objectname finished, search for property
if (objAndProp[0].length == 0 || objAndProp[1].length == 0) return [];
return new monaco.Promise<monaco.languages.CompletionItem[]>(function (c, e, p) {
req = $.getJSON("/codeeditorapi/propertycompletions/" + objAndProp[0] + "/" + objAndProp[1]);
req.done(function (data) {
console.log("propertycompletions c(data) with " + data);
c(data);
});
req.fail((data) => e(data));
}, function () {
req.abort();
});
case 1:
//search for object name
if (objAndProp[0].length == 0) return [];
return new monaco.Promise<monaco.languages.CompletionItem[]>(function (c, e, p) {
req = $.getJSON("/codeeditorapi/objectcompletions/" + objAndProp[0]);
req.done(function (data) {
console.log("objectcompletions c(data) with " + data);
c(data);
});
req.fail((data) => e(data));
}, function () {
req.abort();
});
default: return [];
}
}
}
好吧,正确调用webservice并使用CompletionItems返回预期的数组。我可以看到console.log输出。但是,调用c(data)
会在库中的某处深处引发以下错误。
Uncaught Error: Cannot read property 'length' of undefined
TypeError: Cannot read property 'length' of undefined
at Object.S [as compareIgnoreCase] (http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:33:4808)
at _ (http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:74:21918)
at C (http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:74:22403)
at Array.sort (native)
at http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:74:21249
at Object.g [as _notify] (http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:35:5529)
at Object.enter (http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:35:9107)
at n.Class.derive._creator._run (http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:35:10935)
at n.Class.derive._creator._completed (http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:35:10376)
at n.Class.define.cancel.then (http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:35:12368)
at Object.S [as compareIgnoreCase] (http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:33:4808)
at _ (http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:74:21918)
at C (http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:74:22403)
at Array.sort (native)
at http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:74:21249
at Object.g [as _notify] (http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:35:5529)
at Object.enter (http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:35:9107)
at n.Class.derive._creator._run (http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:35:10935)
at n.Class.derive._creator._completed (http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:35:10376)
at n.Class.define.cancel.then (http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:35:12368)
at http://localhost:58254/Scripts/monaco-editor-0.8.3/min/vs/editor/editor.main.js:33:25360
我不知道,现在该做什么。任何帮助或提示都表示赞赏。非常感谢你!
答案 0 :(得分:0)
对于仍在寻找答案的任何人,看来provideCompletionItems
方法只能返回具有期望值的Promise,并且Monaco编辑器在完成框中显示Loading...
直到诺言得以解决。 / p>
因此,特别是对于您的情况,只需返回一个Promise,即可在其中向Web服务发出请求。
同样,provideCompletionItems
方法应返回一个带有suggestions
属性的对象,该对象带有您的补全数组。
return { suggestions: [...] }