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Merged
rajbos merged 1 commit into from
Feb 3, 2026
Merged

detect implicit selections #176

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35 changes: 25 additions & 10 deletions src/extension.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -102,13 +102,14 @@ interface ModeUsage {
}

interface ContextReferenceUsage {
file: number; // #file references
selection: number; // #selection references
symbol: number; // #symbol references
codebase: number; // #codebase references
workspace: number; // @workspace references
terminal: number; // @terminal references
vscode: number; // @vscode references
file: number; // #file references
selection: number; // #selection references
implicitSelection: number; // Implicit selections via inputState.selections
symbol: number; // #symbol references
codebase: number; // #codebase references
workspace: number; // @workspace references
terminal: number; // @terminal references
vscode: number; // @vscode references
}

interface McpToolUsage {
Expand Down Expand Up @@ -194,7 +195,7 @@ interface SessionLogData {

class CopilotTokenTracker implements vscode.Disposable {
// Cache version - increment this when making changes that require cache invalidation
private static readonly CACHE_VERSION = 8; // Skip sessions with 0 models in avg calculation (2026-02-02)
private static readonly CACHE_VERSION = 9; // Added implicitSelection to ContextReferenceUsage (2026-02-02)

private diagnosticsPanel?: vscode.WebviewPanel;
// Tracks whether the diagnostics panel has already received its session files
Expand Down Expand Up @@ -980,6 +981,7 @@ class CopilotTokenTracker implements vscode.Disposable {
contextReferences: {
file: 0,
selection: 0,
implicitSelection: 0,
symbol: 0,
codebase: 0,
workspace: 0,
Expand Down Expand Up @@ -1079,6 +1081,7 @@ class CopilotTokenTracker implements vscode.Disposable {
// Merge context references
period.contextReferences.file += analysis.contextReferences.file;
period.contextReferences.selection += analysis.contextReferences.selection;
period.contextReferences.implicitSelection += analysis.contextReferences.implicitSelection || 0;
period.contextReferences.symbol += analysis.contextReferences.symbol;
period.contextReferences.codebase += analysis.contextReferences.codebase;
period.contextReferences.workspace += analysis.contextReferences.workspace;
Expand Down Expand Up @@ -1359,6 +1362,7 @@ class CopilotTokenTracker implements vscode.Disposable {
contextReferences: {
file: 0,
selection: 0,
implicitSelection: 0,
symbol: 0,
codebase: 0,
workspace: 0,
Expand Down Expand Up @@ -1392,13 +1396,23 @@ class CopilotTokenTracker implements vscode.Disposable {
// Handle VS Code incremental format - detect mode from session header
if (event.kind === 0 && event.v?.inputState?.mode?.kind) {
sessionMode = event.v.inputState.mode.kind;

// Detect implicit selections in initial state
if (event.v?.inputState?.selections && Array.isArray(event.v.inputState.selections) && event.v.inputState.selections.length > 0) {
analysis.contextReferences.implicitSelection++;
}
}

// Handle mode changes (kind: 1 with mode update)
if (event.kind === 1 && event.k?.includes('mode') && event.v?.kind) {
sessionMode = event.v.kind;
}

// Detect implicit selections in updates to inputState.selections
if (event.kind === 1 && event.k?.includes('selections') && Array.isArray(event.v) && event.v.length > 0) {
analysis.contextReferences.implicitSelection++;
}

// Handle VS Code incremental format - count requests as interactions
if (event.kind === 2 && event.k?.[0] === 'requests' && Array.isArray(event.v)) {
for (const request of event.v) {
Expand Down Expand Up @@ -1763,6 +1777,7 @@ class CopilotTokenTracker implements vscode.Disposable {
contextReferences: {
file: 0,
selection: 0,
implicitSelection: 0,
symbol: 0,
codebase: 0,
workspace: 0,
Expand Down Expand Up @@ -1805,7 +1820,7 @@ class CopilotTokenTracker implements vscode.Disposable {
modified: stat.mtime.toISOString(),
interactions: 0,
contextReferences: {
file: 0, selection: 0, symbol: 0, codebase: 0,
file: 0, selection: 0, implicitSelection: 0, symbol: 0, codebase: 0,
workspace: 0, terminal: 0, vscode: 0
},
firstInteraction: null,
Expand Down Expand Up @@ -2266,7 +2281,7 @@ class CopilotTokenTracker implements vscode.Disposable {
*/
private createEmptyContextRefs(): ContextReferenceUsage {
return {
file: 0, selection: 0, symbol: 0, codebase: 0,
file: 0, selection: 0, implicitSelection: 0, symbol: 0, codebase: 0,
workspace: 0, terminal: 0, vscode: 0
};
}
Expand Down
5 changes: 4 additions & 1 deletion src/webview/usage/main.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ type ModeUsage = { ask: number; edit: number; agent: number };
type ContextReferenceUsage = {
file: number;
selection: number;
implicitSelection: number;
symbol: number;
codebase: number;
workspace: number;
Expand Down Expand Up @@ -67,7 +68,7 @@ function escapeHtml(text: string): string {
}

function getTotalContextRefs(refs: ContextReferenceUsage): number {
return refs.file + refs.selection + refs.symbol + refs.codebase +
return refs.file + refs.selection + refs.implicitSelection + refs.symbol + refs.codebase +
refs.workspace + refs.terminal + refs.vscode;
}

Expand Down Expand Up @@ -205,6 +206,7 @@ function renderLayout(stats: UsageAnalysisStats): void {
padding: 12px;
box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}
.stat-card[title] { cursor: help; }
.stat-label { font-size: 11px; color: #b8b8b8; margin-bottom: 4px; }
.stat-value { font-size: 20px; font-weight: 700; color: #f6f6f6; }
.bar-chart {
Expand Down Expand Up @@ -320,6 +322,7 @@ function renderLayout(stats: UsageAnalysisStats): void {
<div class="stats-grid">
<div class="stat-card"><div class="stat-label">📄 #file</div><div class="stat-value">${stats.month.contextReferences.file}</div><div style="font-size: 10px; color: #999; margin-top: 4px;">Today: ${stats.today.contextReferences.file}</div></div>
<div class="stat-card"><div class="stat-label">✂️ #selection</div><div class="stat-value">${stats.month.contextReferences.selection}</div><div style="font-size: 10px; color: #999; margin-top: 4px;">Today: ${stats.today.contextReferences.selection}</div></div>
<div class="stat-card" title="Text selected in your editor providing passive context to Copilot"><div class="stat-label">✨ Implicit Selection</div><div class="stat-value">${stats.month.contextReferences.implicitSelection}</div><div style="font-size: 10px; color: #999; margin-top: 4px;">Today: ${stats.today.contextReferences.implicitSelection}</div></div>
<div class="stat-card"><div class="stat-label">🔤 #symbol</div><div class="stat-value">${stats.month.contextReferences.symbol}</div><div style="font-size: 10px; color: #999; margin-top: 4px;">Today: ${stats.today.contextReferences.symbol}</div></div>
<div class="stat-card"><div class="stat-label">🗂️ #codebase</div><div class="stat-value">${stats.month.contextReferences.codebase}</div><div style="font-size: 10px; color: #999; margin-top: 4px;">Today: ${stats.today.contextReferences.codebase}</div></div>
<div class="stat-card"><div class="stat-label">📁 @workspace</div><div class="stat-value">${stats.month.contextReferences.workspace}</div><div style="font-size: 10px; color: #999; margin-top: 4px;">Today: ${stats.today.contextReferences.workspace}</div></div>
Expand Down
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