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explorerService.ts
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explorerService.ts
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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 { Event, Emitter } from 'vs/base/common/event';
import { IWorkspaceContextService } from 'vs/platform/workspace/common/workspace';
import { IDisposable, dispose } from 'vs/base/common/lifecycle';
import { IExplorerService, IEditableData, IFilesConfiguration, SortOrder, SortOrderConfiguration } from 'vs/workbench/contrib/files/common/files';
import { ExplorerItem, ExplorerModel } from 'vs/workbench/contrib/files/common/explorerModel';
import { URI } from 'vs/base/common/uri';
import { FileOperationEvent, FileOperation, IFileStat, IFileService, FileChangesEvent, FILES_EXCLUDE_CONFIG, FileChangeType, IResolveFileOptions } from 'vs/platform/files/common/files';
import { dirname } from 'vs/base/common/resources';
import { memoize } from 'vs/base/common/decorators';
import { ResourceGlobMatcher } from 'vs/workbench/common/resources';
import { IInstantiationService } from 'vs/platform/instantiation/common/instantiation';
import { IConfigurationService, IConfigurationChangeEvent } from 'vs/platform/configuration/common/configuration';
import { IExpression } from 'vs/base/common/glob';
import { IClipboardService } from 'vs/platform/clipboard/common/clipboardService';
import { IEditorService } from 'vs/workbench/services/editor/common/editorService';
function getFileEventsExcludes(configurationService: IConfigurationService, root?: URI): IExpression {
const scope = root ? { resource: root } : undefined;
const configuration = scope ? configurationService.getValue<IFilesConfiguration>(scope) : configurationService.getValue<IFilesConfiguration>();
return (configuration && configuration.files && configuration.files.exclude) || Object.create(null);
}
export class ExplorerService implements IExplorerService {
_serviceBrand: any;
private static readonly EXPLORER_FILE_CHANGES_REACT_DELAY = 500; // delay in ms to react to file changes to give our internal events a chance to react first
private _onDidChangeRoots = new Emitter<void>();
private _onDidChangeItem = new Emitter<{ item?: ExplorerItem, recursive: boolean }>();
private _onDidChangeEditable = new Emitter<ExplorerItem>();
private _onDidSelectResource = new Emitter<{ resource?: URI, reveal?: boolean }>();
private _onDidCopyItems = new Emitter<{ items: ExplorerItem[], cut: boolean, previouslyCutItems: ExplorerItem[] | undefined }>();
private disposables: IDisposable[] = [];
private editable: { stat: ExplorerItem, data: IEditableData } | undefined;
private _sortOrder: SortOrder;
private cutItems: ExplorerItem[] | undefined;
private fileSystemProviderSchemes = new Set<string>();
constructor(
@IFileService private fileService: IFileService,
@IInstantiationService private instantiationService: IInstantiationService,
@IConfigurationService private configurationService: IConfigurationService,
@IWorkspaceContextService private contextService: IWorkspaceContextService,
@IClipboardService private clipboardService: IClipboardService,
@IEditorService private editorService: IEditorService
) {
this._sortOrder = this.configurationService.getValue('explorer.sortOrder');
}
get roots(): ExplorerItem[] {
return this.model.roots;
}
get onDidChangeRoots(): Event<void> {
return this._onDidChangeRoots.event;
}
get onDidChangeItem(): Event<{ item?: ExplorerItem, recursive: boolean }> {
return this._onDidChangeItem.event;
}
get onDidChangeEditable(): Event<ExplorerItem> {
return this._onDidChangeEditable.event;
}
get onDidSelectResource(): Event<{ resource?: URI, reveal?: boolean }> {
return this._onDidSelectResource.event;
}
get onDidCopyItems(): Event<{ items: ExplorerItem[], cut: boolean, previouslyCutItems: ExplorerItem[] | undefined }> {
return this._onDidCopyItems.event;
}
get sortOrder(): SortOrder {
return this._sortOrder;
}
// Memoized locals
@memoize private get fileEventsFilter(): ResourceGlobMatcher {
const fileEventsFilter = this.instantiationService.createInstance(
ResourceGlobMatcher,
(root?: URI) => getFileEventsExcludes(this.configurationService, root),
(event: IConfigurationChangeEvent) => event.affectsConfiguration(FILES_EXCLUDE_CONFIG)
);
this.disposables.push(fileEventsFilter);
return fileEventsFilter;
}
@memoize get model(): ExplorerModel {
const model = new ExplorerModel(this.contextService);
this.disposables.push(model);
this.disposables.push(this.fileService.onAfterOperation(e => this.onFileOperation(e)));
this.disposables.push(this.fileService.onFileChanges(e => this.onFileChanges(e)));
this.disposables.push(this.configurationService.onDidChangeConfiguration(e => this.onConfigurationUpdated(this.configurationService.getValue<IFilesConfiguration>())));
this.disposables.push(this.fileService.onDidChangeFileSystemProviderRegistrations(e => {
if (e.added && this.fileSystemProviderSchemes.has(e.scheme)) {
// A file system provider got re-registered, we should update all file stats since they might change (got read-only)
this._onDidChangeItem.fire({ recursive: true });
} else {
this.fileSystemProviderSchemes.add(e.scheme);
}
}));
this.disposables.push(model.onDidChangeRoots(() => this._onDidChangeRoots.fire()));
return model;
}
// IExplorerService methods
findClosest(resource: URI): ExplorerItem | null {
return this.model.findClosest(resource);
}
setEditable(stat: ExplorerItem, data: IEditableData | null): void {
if (!data) {
this.editable = undefined;
} else {
this.editable = { stat, data };
}
this._onDidChangeEditable.fire(stat);
}
setToCopy(items: ExplorerItem[], cut: boolean): void {
const previouslyCutItems = this.cutItems;
this.cutItems = cut ? items : undefined;
this.clipboardService.writeResources(items.map(s => s.resource));
this._onDidCopyItems.fire({ items, cut, previouslyCutItems });
}
isCut(item: ExplorerItem): boolean {
return !!this.cutItems && this.cutItems.indexOf(item) >= 0;
}
getEditableData(stat: ExplorerItem): IEditableData | undefined {
return this.editable && this.editable.stat === stat ? this.editable.data : undefined;
}
isEditable(stat: ExplorerItem | undefined): boolean {
return !!this.editable && (this.editable.stat === stat || !stat);
}
async select(resource: URI, reveal?: boolean): Promise<void> {
const fileStat = this.findClosest(resource);
if (fileStat) {
this._onDidSelectResource.fire({ resource: fileStat.resource, reveal });
return Promise.resolve(undefined);
}
// Stat needs to be resolved first and then revealed
const options: IResolveFileOptions = { resolveTo: [resource], resolveMetadata: this.sortOrder === 'modified' };
const workspaceFolder = this.contextService.getWorkspaceFolder(resource);
const rootUri = workspaceFolder ? workspaceFolder.uri : this.roots[0].resource;
const root = this.roots.filter(r => r.resource.toString() === rootUri.toString()).pop()!;
try {
const stat = await this.fileService.resolve(rootUri, options);
// Convert to model
const modelStat = ExplorerItem.create(stat, undefined, options.resolveTo);
// Update Input with disk Stat
ExplorerItem.mergeLocalWithDisk(modelStat, root);
const item = root.find(resource);
this._onDidChangeItem.fire({ item: root, recursive: true });
// Select and Reveal
this._onDidSelectResource.fire({ resource: item ? item.resource : undefined, reveal });
} catch (error) {
root.isError = true;
this._onDidChangeItem.fire({ item: root, recursive: false });
}
}
refresh(): void {
this.model.roots.forEach(r => r.forgetChildren());
this._onDidChangeItem.fire({ recursive: true });
const resource = this.editorService.activeEditor ? this.editorService.activeEditor.getResource() : undefined;
const autoReveal = this.configurationService.getValue<IFilesConfiguration>().explorer.autoReveal;
if (resource && autoReveal) {
// We did a top level refresh, reveal the active file #67118
this.select(resource, true);
}
}
// File events
private onFileOperation(e: FileOperationEvent): void {
// Add
if (e.isOperation(FileOperation.CREATE) || e.isOperation(FileOperation.COPY)) {
const addedElement = e.target;
const parentResource = dirname(addedElement.resource)!;
const parents = this.model.findAll(parentResource);
if (parents.length) {
// Add the new file to its parent (Model)
parents.forEach(p => {
// We have to check if the parent is resolved #29177
const resolveMetadata = this.sortOrder === `modified`;
const thenable: Promise<IFileStat | undefined> = p.isDirectoryResolved ? Promise.resolve(undefined) : this.fileService.resolve(p.resource, { resolveMetadata });
thenable.then(stat => {
if (stat) {
const modelStat = ExplorerItem.create(stat, p.parent);
ExplorerItem.mergeLocalWithDisk(modelStat, p);
}
const childElement = ExplorerItem.create(addedElement, p.parent);
// Make sure to remove any previous version of the file if any
p.removeChild(childElement);
p.addChild(childElement);
// Refresh the Parent (View)
this._onDidChangeItem.fire({ item: p, recursive: false });
});
});
}
}
// Move (including Rename)
else if (e.isOperation(FileOperation.MOVE)) {
const oldResource = e.resource;
const newElement = e.target;
const oldParentResource = dirname(oldResource);
const newParentResource = dirname(newElement.resource);
// Handle Rename
if (oldParentResource.toString() === newParentResource.toString()) {
const modelElements = this.model.findAll(oldResource);
modelElements.forEach(modelElement => {
// Rename File (Model)
modelElement.rename(newElement);
this._onDidChangeItem.fire({ item: modelElement.parent, recursive: false });
});
}
// Handle Move
else {
const newParents = this.model.findAll(newParentResource);
const modelElements = this.model.findAll(oldResource);
if (newParents.length && modelElements.length) {
// Move in Model
modelElements.forEach((modelElement, index) => {
const oldParent = modelElement.parent;
modelElement.move(newParents[index]);
this._onDidChangeItem.fire({ item: oldParent, recursive: false });
this._onDidChangeItem.fire({ item: newParents[index], recursive: false });
});
}
}
}
// Delete
else if (e.isOperation(FileOperation.DELETE)) {
const modelElements = this.model.findAll(e.resource);
modelElements.forEach(element => {
if (element.parent) {
const parent = element.parent;
// Remove Element from Parent (Model)
parent.removeChild(element);
// Refresh Parent (View)
this._onDidChangeItem.fire({ item: parent, recursive: false });
}
});
}
}
private onFileChanges(e: FileChangesEvent): void {
// Check if an explorer refresh is necessary (delayed to give internal events a chance to react first)
// Note: there is no guarantee when the internal events are fired vs real ones. Code has to deal with the fact that one might
// be fired first over the other or not at all.
setTimeout(() => {
// Filter to the ones we care
const shouldRefresh = () => {
e = this.filterToViewRelevantEvents(e);
// Handle added files/folders
const added = e.getAdded();
if (added.length) {
// Check added: Refresh if added file/folder is not part of resolved root and parent is part of it
const ignoredPaths: Set<string> = new Set();
for (let i = 0; i < added.length; i++) {
const change = added[i];
// Find parent
const parent = dirname(change.resource);
// Continue if parent was already determined as to be ignored
if (ignoredPaths.has(parent.toString())) {
continue;
}
// Compute if parent is visible and added file not yet part of it
const parentStat = this.model.findClosest(parent);
if (parentStat && parentStat.isDirectoryResolved && !this.model.findClosest(change.resource)) {
return true;
}
// Keep track of path that can be ignored for faster lookup
if (!parentStat || !parentStat.isDirectoryResolved) {
ignoredPaths.add(parent.toString());
}
}
}
// Handle deleted files/folders
const deleted = e.getDeleted();
if (deleted.length) {
// Check deleted: Refresh if deleted file/folder part of resolved root
for (let j = 0; j < deleted.length; j++) {
const del = deleted[j];
const item = this.model.findClosest(del.resource);
if (item && item.parent) {
return true;
}
}
}
// Handle updated files/folders if we sort by modified
if (this._sortOrder === SortOrderConfiguration.MODIFIED) {
const updated = e.getUpdated();
// Check updated: Refresh if updated file/folder part of resolved root
for (let j = 0; j < updated.length; j++) {
const upd = updated[j];
const item = this.model.findClosest(upd.resource);
if (item && item.parent) {
return true;
}
}
}
return false;
};
if (shouldRefresh()) {
this.roots.forEach(r => r.forgetChildren());
this._onDidChangeItem.fire({ recursive: true });
}
}, ExplorerService.EXPLORER_FILE_CHANGES_REACT_DELAY);
}
private filterToViewRelevantEvents(e: FileChangesEvent): FileChangesEvent {
return new FileChangesEvent(e.changes.filter(change => {
if (change.type === FileChangeType.UPDATED && this._sortOrder !== SortOrderConfiguration.MODIFIED) {
return false; // we only are about updated if we sort by modified time
}
if (!this.contextService.isInsideWorkspace(change.resource)) {
return false; // exclude changes for resources outside of workspace
}
if (this.fileEventsFilter.matches(change.resource)) {
return false; // excluded via files.exclude setting
}
return true;
}));
}
private onConfigurationUpdated(configuration: IFilesConfiguration, event?: IConfigurationChangeEvent): void {
const configSortOrder = configuration && configuration.explorer && configuration.explorer.sortOrder || 'default';
if (this._sortOrder !== configSortOrder) {
const shouldRefresh = this._sortOrder !== undefined;
this._sortOrder = configSortOrder;
if (shouldRefresh) {
this.refresh();
}
}
}
dispose(): void {
dispose(this.disposables);
}
}