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/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import { CancellationTokenSource } from 'vs/base/common/cancellation';
import { onUnexpectedError } from 'vs/base/common/errors';
import { Emitter, Event } from 'vs/base/common/event';
import { DisposableStore, MutableDisposable, toDisposable } from 'vs/base/common/lifecycle';
import { isEqual, dirname } from 'vs/base/common/resources';
import { URI } from 'vs/base/common/uri';
import { IWorkspaceContextService, IWorkspaceFolder, WorkbenchState } from 'vs/platform/workspace/common/workspace';
import { Schemas } from 'vs/base/common/network';
import { IConfigurationService } from 'vs/platform/configuration/common/configuration';
import { BreadcrumbsConfig } from 'vs/workbench/browser/parts/editor/breadcrumbs';
import { FileKind } from 'vs/platform/files/common/files';
import { withNullAsUndefined } from 'vs/base/common/types';
import { IOutline, IOutlineService, OutlineTarget } from 'vs/workbench/services/outline/browser/outline';
import { IEditorPane } from 'vs/workbench/common/editor';
export class FileElement {
constructor(
readonly uri: URI,
readonly kind: FileKind
) { }
}
type FileInfo = { path: FileElement[]; folder?: IWorkspaceFolder };
export class OutlineElement2 {
constructor(
readonly element: IOutline<any> | any,
readonly outline: IOutline<any>
) { }
}
export class BreadcrumbsModel {
private readonly _disposables = new DisposableStore();
private _fileInfo: FileInfo;
private readonly _cfgFilePath: BreadcrumbsConfig<'on' | 'off' | 'last'>;
private readonly _cfgSymbolPath: BreadcrumbsConfig<'on' | 'off' | 'last'>;
private readonly _currentOutline = new MutableDisposable<IOutline<any>>();
private readonly _outlineDisposables = new DisposableStore();
private readonly _onDidUpdate = new Emitter<this>();
readonly onDidUpdate: Event<this> = this._onDidUpdate.event;
constructor(
readonly resource: URI,
editor: IEditorPane | undefined,
@IConfigurationService configurationService: IConfigurationService,
@IWorkspaceContextService private readonly _workspaceService: IWorkspaceContextService,
@IOutlineService private readonly _outlineService: IOutlineService,
) {
this._cfgFilePath = BreadcrumbsConfig.FilePath.bindTo(configurationService);
this._cfgSymbolPath = BreadcrumbsConfig.SymbolPath.bindTo(configurationService);
this._disposables.add(this._cfgFilePath.onDidChange(_ => this._onDidUpdate.fire(this)));
this._disposables.add(this._cfgSymbolPath.onDidChange(_ => this._onDidUpdate.fire(this)));
this._workspaceService.onDidChangeWorkspaceFolders(this._onDidChangeWorkspaceFolders, this, this._disposables);
this._fileInfo = this._initFilePathInfo(resource);
if (editor) {
this._bindToEditor(editor);
this._disposables.add(_outlineService.onDidChange(() => this._bindToEditor(editor)));
this._disposables.add(editor.onDidChangeControl(() => this._bindToEditor(editor)));
}
this._onDidUpdate.fire(this);
}
dispose(): void {
this._disposables.dispose();
this._cfgFilePath.dispose();
this._cfgSymbolPath.dispose();
this._currentOutline.dispose();
this._outlineDisposables.dispose();
this._onDidUpdate.dispose();
}
isRelative(): boolean {
return Boolean(this._fileInfo.folder);
}
getElements(): ReadonlyArray<FileElement | OutlineElement2> {
let result: (FileElement | OutlineElement2)[] = [];
// file path elements
if (this._cfgFilePath.getValue() === 'on') {
result = result.concat(this._fileInfo.path);
} else if (this._cfgFilePath.getValue() === 'last' && this._fileInfo.path.length > 0) {
result = result.concat(this._fileInfo.path.slice(-1));
}
if (this._cfgSymbolPath.getValue() === 'off') {
return result;
}
if (!this._currentOutline.value) {
return result;
}
const breadcrumbsElements = this._currentOutline.value.config.breadcrumbsDataSource.getBreadcrumbElements();
for (let i = this._cfgSymbolPath.getValue() === 'last' && breadcrumbsElements.length > 0 ? breadcrumbsElements.length - 1 : 0; i < breadcrumbsElements.length; i++) {
result.push(new OutlineElement2(breadcrumbsElements[i], this._currentOutline.value));
}
if (breadcrumbsElements.length === 0 && !this._currentOutline.value.isEmpty) {
result.push(new OutlineElement2(this._currentOutline.value, this._currentOutline.value));
}
return result;
}
private _initFilePathInfo(uri: URI): FileInfo {
if (uri.scheme === Schemas.untitled) {
return {
folder: undefined,
path: []
};
}
const info: FileInfo = {
folder: withNullAsUndefined(this._workspaceService.getWorkspaceFolder(uri)),
path: []
};
let uriPrefix: URI | null = uri;
while (uriPrefix && uriPrefix.path !== '/') {
if (info.folder && isEqual(info.folder.uri, uriPrefix)) {
break;
}
info.path.unshift(new FileElement(uriPrefix, info.path.length === 0 ? FileKind.FILE : FileKind.FOLDER));
const prevPathLength = uriPrefix.path.length;
uriPrefix = dirname(uriPrefix);
if (uriPrefix.path.length === prevPathLength) {
break;
}
}
if (info.folder && this._workspaceService.getWorkbenchState() === WorkbenchState.WORKSPACE) {
info.path.unshift(new FileElement(info.folder.uri, FileKind.ROOT_FOLDER));
}
return info;
}
private _onDidChangeWorkspaceFolders() {
this._fileInfo = this._initFilePathInfo(this.resource);
this._onDidUpdate.fire(this);
}
private _bindToEditor(editor: IEditorPane): void {
const newCts = new CancellationTokenSource();
this._currentOutline.clear();
this._outlineDisposables.clear();
this._outlineDisposables.add(toDisposable(() => newCts.dispose(true)));
this._outlineService.createOutline(editor, OutlineTarget.Breadcrumbs, newCts.token).then(outline => {
if (newCts.token.isCancellationRequested) {
// cancelled: dispose new outline and reset
outline?.dispose();
outline = undefined;
}
this._currentOutline.value = outline;
this._onDidUpdate.fire(this);
if (outline) {
this._outlineDisposables.add(outline.onDidChange(() => this._onDidUpdate.fire(this)));
}
}).catch(err => {
this._onDidUpdate.fire(this);
onUnexpectedError(err);
});
}
}
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