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'use strict';
import { Functions, IDeferrable } from './system';
import { CancellationToken, ConfigurationChangeEvent, debug, DecorationRangeBehavior, DecorationRenderOptions, Disposable, Hover, HoverProvider, languages, Position, Range, StatusBarAlignment, StatusBarItem, TextDocument, TextEditor, TextEditorDecorationType, window } from 'vscode';
import { Annotations } from './annotations/annotations';
import { Commands } from './commands';
import { configuration, IConfig, StatusBarCommand } from './configuration';
import { isTextEditor, RangeEndOfLineIndex } from './constants';
import { Container } from './container';
import { DocumentBlameStateChangeEvent, DocumentDirtyIdleTriggerEvent, DocumentDirtyStateChangeEvent, GitDocumentState, TrackedDocument } from './trackers/documentTracker';
import { CommitFormatter, GitBlameLine, GitCommit, ICommitFormatOptions } from './gitService';
import { GitLineState, LinesChangeEvent, LineTracker } from './trackers/lineTracker';
const annotationDecoration: TextEditorDecorationType = window.createTextEditorDecorationType({
after: {
margin: '0 0 0 3em',
textDecoration: 'none'
},
rangeBehavior: DecorationRangeBehavior.ClosedOpen
} as DecorationRenderOptions);
class AnnotationState {
constructor(private _enabled: boolean) { }
get enabled(): boolean {
return this.suspended ? false : this._enabled;
}
private _suspendReason?: 'debugging' | 'dirty';
get suspended(): boolean {
return this._suspendReason !== undefined;
}
reset(enabled: boolean): boolean {
// returns whether a refresh is required
if (this._enabled === enabled && !this.suspended) return false;
this._enabled = enabled;
this._suspendReason = undefined;
return true;
}
resume(reason: 'debugging' | 'dirty'): boolean {
// returns whether a refresh is required
const refresh = this._suspendReason !== undefined;
this._suspendReason = undefined;
return refresh;
}
suspend(reason: 'debugging' | 'dirty'): boolean {
// returns whether a refresh is required
const refresh = this._suspendReason === undefined;
this._suspendReason = reason;
return refresh;
}
}
export class CurrentLineController extends Disposable {
private _blameAnnotationState: AnnotationState | undefined;
private _editor: TextEditor | undefined;
private _lineTracker: LineTracker<GitLineState>;
private _statusBarItem: StatusBarItem | undefined;
private _disposable: Disposable;
private _debugSessionEndDisposable: Disposable | undefined;
private _hoverProviderDisposable: Disposable | undefined;
private _lineTrackingDisposable: Disposable | undefined;
constructor() {
super(() => this.dispose());
this._lineTracker = new LineTracker<GitLineState>();
this._disposable = Disposable.from(
this._lineTracker,
configuration.onDidChange(this.onConfigurationChanged, this),
Container.annotations.onDidToggleAnnotations(this.onFileAnnotationsToggled, this),
debug.onDidStartDebugSession(this.onDebugSessionStarted, this)
);
this.onConfigurationChanged(configuration.initializingChangeEvent);
}
dispose() {
this.clearAnnotations(this._editor);
this.unregisterHoverProviders();
this._debugSessionEndDisposable && this._debugSessionEndDisposable.dispose();
this._lineTrackingDisposable && this._lineTrackingDisposable.dispose();
this._statusBarItem && this._statusBarItem.dispose();
this._disposable && this._disposable.dispose();
}
private onConfigurationChanged(e: ConfigurationChangeEvent) {
const initializing = configuration.initializing(e);
const cfg = configuration.get<IConfig>();
let changed = false;
if (initializing || configuration.changed(e, configuration.name('currentLine').value)) {
changed = true;
this._blameAnnotationState = undefined;
}
if (initializing || configuration.changed(e, configuration.name('hovers').value)) {
changed = true;
this.unregisterHoverProviders();
}
if (initializing || configuration.changed(e, configuration.name('statusBar').value)) {
changed = true;
if (cfg.statusBar.enabled) {
const alignment = cfg.statusBar.alignment !== 'left' ? StatusBarAlignment.Right : StatusBarAlignment.Left;
if (this._statusBarItem !== undefined && this._statusBarItem.alignment !== alignment) {
this._statusBarItem.dispose();
this._statusBarItem = undefined;
}
this._statusBarItem = this._statusBarItem || window.createStatusBarItem(alignment, alignment === StatusBarAlignment.Right ? 1000 : 0);
this._statusBarItem.command = cfg.statusBar.command;
}
else if (this._statusBarItem !== undefined) {
this._statusBarItem.dispose();
this._statusBarItem = undefined;
}
}
if (!changed) return;
const trackCurrentLine = cfg.currentLine.enabled || cfg.statusBar.enabled || (cfg.hovers.enabled && cfg.hovers.currentLine.enabled) ||
(this._blameAnnotationState !== undefined && this._blameAnnotationState.enabled);
if (trackCurrentLine) {
this._lineTracker.start();
this._lineTrackingDisposable = this._lineTrackingDisposable || Disposable.from(
this._lineTracker.onDidChangeActiveLines(this.onActiveLinesChanged, this),
Container.tracker.onDidChangeBlameState(this.onBlameStateChanged, this),
Container.tracker.onDidChangeDirtyState(this.onDirtyStateChanged, this),
Container.tracker.onDidTriggerDirtyIdle(this.onDirtyIdleTriggered, this)
);
}
else {
this._lineTracker.stop();
if (this._lineTrackingDisposable !== undefined) {
this._lineTrackingDisposable.dispose();
this._lineTrackingDisposable = undefined;
}
}
this.refresh(window.activeTextEditor, { full: true });
}
private onActiveLinesChanged(e: LinesChangeEvent) {
if (!e.pending && e.lines !== undefined) {
this.refresh(e.editor);
return;
}
this.clear(e.editor, (Container.config.statusBar.reduceFlicker && e.reason === 'lines' && e.lines !== undefined) ? 'lines' : undefined);
}
private onBlameStateChanged(e: DocumentBlameStateChangeEvent<GitDocumentState>) {
if (e.blameable) {
this.refresh(e.editor);
return;
}
this.clear(e.editor);
}
private onDebugSessionStarted() {
if (this.suspendBlameAnnotations('debugging', window.activeTextEditor)) {
this._debugSessionEndDisposable = debug.onDidTerminateDebugSession(this.onDebugSessionEnded, this);
}
}
private onDebugSessionEnded() {
if (this._debugSessionEndDisposable !== undefined) {
this._debugSessionEndDisposable.dispose();
this._debugSessionEndDisposable = undefined;
}
this.resumeBlameAnnotations('debugging', window.activeTextEditor);
}
private onDirtyIdleTriggered(e: DocumentDirtyIdleTriggerEvent<GitDocumentState>) {
const maxLines = configuration.get<number>(configuration.name('advanced')('blame')('sizeThresholdAfterEdit').value);
if (maxLines > 0 && e.document.lineCount > maxLines) return;
this.resumeBlameAnnotations('dirty', window.activeTextEditor);
}
private async onDirtyStateChanged(e: DocumentDirtyStateChangeEvent<GitDocumentState>) {
if (e.dirty) {
this.suspendBlameAnnotations('dirty', window.activeTextEditor);
}
else {
this.resumeBlameAnnotations('dirty', window.activeTextEditor, { force: true });
}
}
private onFileAnnotationsToggled() {
this.refresh(window.activeTextEditor);
}
async clear(editor: TextEditor | undefined, reason?: 'lines') {
if (this._editor !== editor && this._editor !== undefined) {
this.clearAnnotations(this._editor);
}
this.clearAnnotations(editor);
this._lineTracker.reset();
this.unregisterHoverProviders();
if (this._statusBarItem !== undefined && reason !== 'lines') {
this._statusBarItem.hide();
}
}
async provideDetailsHover(document: TextDocument, position: Position, token: CancellationToken): Promise<Hover | undefined> {
if (this._editor === undefined || this._editor.document !== document || !this._lineTracker.includes(position.line)) return undefined;
const lineState = this._lineTracker.getState(position.line);
const commit = lineState !== undefined ? lineState.commit : undefined;
if (commit === undefined) return undefined;
// Avoid double annotations if we are showing the whole-file hover blame annotations
const fileAnnotations = await Container.annotations.getAnnotationType(this._editor);
if (fileAnnotations !== undefined && Container.config.hovers.annotations.details) return undefined;
const wholeLine = Container.config.hovers.currentLine.over === 'line';
const range = document.validateRange(new Range(position.line, wholeLine ? 0 : RangeEndOfLineIndex, position.line, RangeEndOfLineIndex));
if (!wholeLine && range.start.character !== position.character) return undefined;
// Get the full commit message -- since blame only returns the summary
let logCommit = lineState !== undefined ? lineState.logCommit : undefined;
if (logCommit === undefined && !commit.isUncommitted) {
logCommit = await Container.git.getLogCommitForFile(commit.repoPath, commit.uri.fsPath, { ref: commit.sha });
if (logCommit !== undefined) {
// Preserve the previous commit from the blame commit
logCommit.previousSha = commit.previousSha;
logCommit.previousFileName = commit.previousFileName;
if (lineState !== undefined) {
lineState.logCommit = logCommit;
}
}
}
const trackedDocument = await Container.tracker.get(document);
if (trackedDocument === undefined) return undefined;
const message = Annotations.getHoverMessage(logCommit || commit, Container.config.defaultDateFormat, await Container.git.getRemotes(commit.repoPath), fileAnnotations, position.line);
return new Hover(message, range);
}
async provideChangesHover(document: TextDocument, position: Position, token: CancellationToken): Promise<Hover | undefined> {
if (this._editor === undefined || this._editor.document !== document || !this._lineTracker.includes(position.line)) return undefined;
const lineState = this._lineTracker.getState(position.line);
const commit = lineState !== undefined ? lineState.commit : undefined;
if (commit === undefined) return undefined;
// Avoid double annotations if we are showing the whole-file hover blame annotations
if (Container.config.hovers.annotations.changes) {
const fileAnnotations = await Container.annotations.getAnnotationType(this._editor);
if (fileAnnotations !== undefined) return undefined;
}
const wholeLine = Container.config.hovers.currentLine.over === 'line';
const range = document.validateRange(new Range(position.line, wholeLine ? 0 : RangeEndOfLineIndex, position.line, RangeEndOfLineIndex));
if (!wholeLine && range.start.character !== position.character) return undefined;
const trackedDocument = await Container.tracker.get(document);
if (trackedDocument === undefined) return undefined;
const hover = await Annotations.changesHover(commit, position.line, trackedDocument.uri);
if (hover.hoverMessage === undefined) return undefined;
return new Hover(hover.hoverMessage, range);
}
async showAnnotations(editor: TextEditor | undefined) {
this.setBlameAnnotationState(true, editor);
}
async toggleAnnotations(editor: TextEditor | undefined) {
const state = this.getBlameAnnotationState();
this.setBlameAnnotationState(!state.enabled, editor);
}
private async resumeBlameAnnotations(reason: 'debugging' | 'dirty', editor: TextEditor | undefined, options: { force?: boolean } = {}) {
if (!options.force && (this._blameAnnotationState === undefined || !this._blameAnnotationState.suspended)) return;
let refresh = false;
if (this._blameAnnotationState !== undefined) {
refresh = this._blameAnnotationState.resume(reason);
}
if (editor === undefined || (!options.force && !refresh)) return;
await this.refresh(editor);
}
private async suspendBlameAnnotations(reason: 'debugging' | 'dirty', editor: TextEditor | undefined, options: { force?: boolean } = {}) {
const state = this.getBlameAnnotationState();
// If we aren't enabled, suspend doesn't matter
if (this._blameAnnotationState === undefined && !state.enabled) return false;
if (this._blameAnnotationState === undefined) {
this._blameAnnotationState = new AnnotationState(state.enabled);
}
const refresh = this._blameAnnotationState.suspend(reason);
if (editor === undefined || (!options.force && !refresh)) return;
await this.refresh(editor);
return true;
}
private async setBlameAnnotationState(enabled: boolean, editor: TextEditor | undefined) {
let refresh = true;
if (this._blameAnnotationState === undefined) {
this._blameAnnotationState = new AnnotationState(enabled);
}
else {
refresh = this._blameAnnotationState.reset(enabled);
}
if (editor === undefined || !refresh) return;
await this.refresh(editor);
}
private clearAnnotations(editor: TextEditor | undefined) {
if (editor === undefined) return;
if ((editor as any)._disposed === true) return;
editor.setDecorations(annotationDecoration, []);
}
private getBlameAnnotationState() {
if (this._blameAnnotationState !== undefined) return this._blameAnnotationState;
const cfg = Container.config;
return {
enabled: cfg.currentLine.enabled || cfg.statusBar.enabled || (cfg.hovers.enabled && cfg.hovers.currentLine.enabled)
};
}
private _updateBlameDebounced: (((lines: number[], editor: TextEditor, trackedDocument: TrackedDocument<GitDocumentState>) => void) & IDeferrable) | undefined;
private async refresh(editor: TextEditor | undefined, options: { full?: boolean, trackedDocument?: TrackedDocument<GitDocumentState> } = {}) {
if (editor === undefined && this._editor === undefined) return;
if (editor === undefined || this._lineTracker.lines === undefined) return this.clear(this._editor);
if (this._editor !== editor) {
// If we are changing editor, consider this a full refresh
options.full = true;
// Clear any annotations on the previously active editor
this.clearAnnotations(this._editor);
this._editor = editor;
}
const state = this.getBlameAnnotationState();
if (state.enabled) {
if (options.trackedDocument === undefined) {
options.trackedDocument = await Container.tracker.getOrAdd(editor.document);
}
if (options.trackedDocument.isBlameable) {
if (state.enabled && Container.config.hovers.enabled && Container.config.hovers.currentLine.enabled &&
(options.full || this._hoverProviderDisposable === undefined)) {
this.registerHoverProviders(editor, Container.config.hovers.currentLine);
}
if (this._updateBlameDebounced === undefined) {
this._updateBlameDebounced = Functions.debounce(this.updateBlame, 50, { track: true });
}
this._updateBlameDebounced(this._lineTracker.lines, editor, options.trackedDocument);
return;
}
}
await this.clear(editor);
}
private registerHoverProviders(editor: TextEditor | undefined, providers: { details: boolean, changes: boolean }) {
this.unregisterHoverProviders();
if (editor === undefined) return;
if (!providers.details && !providers.changes) return;
const subscriptions: Disposable[] = [];
if (providers.changes) {
subscriptions.push(languages.registerHoverProvider({ pattern: editor.document.uri.fsPath }, { provideHover: this.provideChangesHover.bind(this) } as HoverProvider));
}
if (providers.details) {
subscriptions.push(languages.registerHoverProvider({ pattern: editor.document.uri.fsPath }, { provideHover: this.provideDetailsHover.bind(this) } as HoverProvider));
}
this._hoverProviderDisposable = Disposable.from(...subscriptions);
}
private unregisterHoverProviders() {
if (this._hoverProviderDisposable !== undefined) {
this._hoverProviderDisposable.dispose();
this._hoverProviderDisposable = undefined;
}
}
private async updateBlame(lines: number[], editor: TextEditor, trackedDocument: TrackedDocument<GitDocumentState>) {
this._lineTracker.reset();
// Make sure we are still on the same line and not pending
if (!this._lineTracker.includesAll(lines) || (this._updateBlameDebounced && this._updateBlameDebounced.pending!())) return;
let blameLines;
if (lines.length === 1) {
const blameLine = editor.document.isDirty
? await Container.git.getBlameForLineContents(trackedDocument.uri, lines[0], editor.document.getText())
: await Container.git.getBlameForLine(trackedDocument.uri, lines[0]);
if (blameLine === undefined) return this.clear(editor);
blameLines = [blameLine];
}
else {
const blame = editor.document.isDirty
? await Container.git.getBlameForFileContents(trackedDocument.uri, editor.document.getText())
: await Container.git.getBlameForFile(trackedDocument.uri);
if (blame === undefined) return this.clear(editor);
blameLines = lines.map(l => {
const commitLine = blame.lines[l];
return {
line: commitLine,
commit: blame.commits.get(commitLine.sha)!
};
});
}
// Make sure we are still on the same line, blameable, and not pending, after the await
if (this._lineTracker.includesAll(lines) && trackedDocument.isBlameable && !(this._updateBlameDebounced && this._updateBlameDebounced.pending!())) {
if (!this.getBlameAnnotationState().enabled) return this.clear(editor);
}
const activeLine = blameLines[0];
this._lineTracker.setState(activeLine.line.line, new GitLineState(activeLine.commit));
// I have no idea why I need this protection -- but it happens
if (editor.document === undefined) return;
if (editor.document.isDirty) {
const trackedDocument = await Container.tracker.get(editor.document);
if (trackedDocument !== undefined) {
trackedDocument.setForceDirtyStateChangeOnNextDocumentChange();
}
}
this.updateStatusBar(activeLine.commit, editor);
this.updateTrailingAnnotations(blameLines, editor);
}
private updateStatusBar(commit: GitCommit, editor: TextEditor) {
const cfg = Container.config.statusBar;
if (!cfg.enabled || this._statusBarItem === undefined || !isTextEditor(editor)) return;
this._statusBarItem.text = `$(git-commit) ${CommitFormatter.fromTemplate(cfg.format, commit, {
truncateMessageAtNewLine: true,
dateFormat: cfg.dateFormat === null ? Container.config.defaultDateFormat : cfg.dateFormat
} as ICommitFormatOptions)}`;
switch (cfg.command) {
case StatusBarCommand.ToggleFileBlame:
this._statusBarItem.tooltip = 'Toggle Blame Annotations';
break;
case StatusBarCommand.DiffWithPrevious:
this._statusBarItem.command = Commands.DiffLineWithPrevious;
this._statusBarItem.tooltip = 'Compare Line Revision with Previous';
break;
case StatusBarCommand.DiffWithWorking:
this._statusBarItem.command = Commands.DiffLineWithWorking;
this._statusBarItem.tooltip = 'Compare Line Revision with Working';
break;
case StatusBarCommand.ToggleCodeLens:
this._statusBarItem.tooltip = 'Toggle Git CodeLens';
break;
case StatusBarCommand.ShowQuickCommitDetails:
this._statusBarItem.tooltip = 'Show Commit Details';
break;
case StatusBarCommand.ShowQuickCommitFileDetails:
this._statusBarItem.tooltip = 'Show Line Commit Details';
break;
case StatusBarCommand.ShowQuickFileHistory:
this._statusBarItem.tooltip = 'Show File History';
break;
case StatusBarCommand.ShowQuickCurrentBranchHistory:
this._statusBarItem.tooltip = 'Show Branch History';
break;
}
this._statusBarItem.show();
}
private async updateTrailingAnnotations(lines: GitBlameLine[], editor: TextEditor) {
const cfg = Container.config.currentLine;
if (!cfg.enabled || !isTextEditor(editor)) return;
const decorations = [];
for (const l of lines) {
const line = l.line.line;
const decoration = Annotations.trailing(l.commit, cfg.format, cfg.dateFormat === null ? Container.config.defaultDateFormat : cfg.dateFormat);
decoration.range = editor.document.validateRange(new Range(line, RangeEndOfLineIndex, line, RangeEndOfLineIndex));
decorations.push(decoration);
}
editor.setDecorations(annotationDecoration, decorations);
}
}