fix(ui): unify Ctrl+O expansion hint experience across buffer modes (#21474)

This commit is contained in:
Jarrod Whelan
2026-03-07 11:04:22 -08:00
committed by GitHub
parent e5d58c2b5a
commit 54b0344fc5
19 changed files with 184 additions and 451 deletions
@@ -7,12 +7,9 @@
import type React from 'react';
import { Text, Box } from 'ink';
import { MarkdownDisplay } from '../../utils/MarkdownDisplay.js';
import { ShowMoreLines } from '../ShowMoreLines.js';
import { theme } from '../../semantic-colors.js';
import { SCREEN_READER_MODEL_PREFIX } from '../../textConstants.js';
import { useUIState } from '../../contexts/UIStateContext.js';
import { useAlternateBuffer } from '../../hooks/useAlternateBuffer.js';
import { OverflowProvider } from '../../contexts/OverflowContext.js';
interface GeminiMessageProps {
text: string;
@@ -31,8 +28,7 @@ export const GeminiMessage: React.FC<GeminiMessageProps> = ({
const prefix = '✦ ';
const prefixWidth = prefix.length;
const isAlternateBuffer = useAlternateBuffer();
const content = (
return (
<Box flexDirection="row">
<Box width={prefixWidth}>
<Text color={theme.text.accent} aria-label={SCREEN_READER_MODEL_PREFIX}>
@@ -44,26 +40,14 @@ export const GeminiMessage: React.FC<GeminiMessageProps> = ({
text={text}
isPending={isPending}
availableTerminalHeight={
isAlternateBuffer || availableTerminalHeight === undefined
availableTerminalHeight === undefined
? undefined
: Math.max(availableTerminalHeight - 1, 1)
}
terminalWidth={Math.max(terminalWidth - prefixWidth, 0)}
renderMarkdown={renderMarkdown}
/>
<Box>
<ShowMoreLines
constrainHeight={availableTerminalHeight !== undefined}
/>
</Box>
</Box>
</Box>
);
return isAlternateBuffer ? (
/* Shadow the global provider to maintain isolation in ASB mode. */
<OverflowProvider>{content}</OverflowProvider>
) : (
content
);
};
@@ -7,9 +7,7 @@
import type React from 'react';
import { Box } from 'ink';
import { MarkdownDisplay } from '../../utils/MarkdownDisplay.js';
import { ShowMoreLines } from '../ShowMoreLines.js';
import { useUIState } from '../../contexts/UIStateContext.js';
import { useAlternateBuffer } from '../../hooks/useAlternateBuffer.js';
interface GeminiMessageContentProps {
text: string;
@@ -31,7 +29,6 @@ export const GeminiMessageContent: React.FC<GeminiMessageContentProps> = ({
terminalWidth,
}) => {
const { renderMarkdown } = useUIState();
const isAlternateBuffer = useAlternateBuffer();
const originalPrefix = '✦ ';
const prefixWidth = originalPrefix.length;
@@ -41,18 +38,13 @@ export const GeminiMessageContent: React.FC<GeminiMessageContentProps> = ({
text={text}
isPending={isPending}
availableTerminalHeight={
isAlternateBuffer || availableTerminalHeight === undefined
availableTerminalHeight === undefined
? undefined
: Math.max(availableTerminalHeight - 1, 1)
}
terminalWidth={Math.max(terminalWidth - prefixWidth, 0)}
renderMarkdown={renderMarkdown}
/>
<Box>
<ShowMoreLines
constrainHeight={availableTerminalHeight !== undefined}
/>
</Box>
</Box>
);
};
@@ -6,7 +6,6 @@
import { renderWithProviders } from '../../../test-utils/render.js';
import { describe, it, expect, vi, afterEach } from 'vitest';
import { act } from 'react';
import { ToolGroupMessage } from './ToolGroupMessage.js';
import type {
HistoryItem,
@@ -767,200 +766,4 @@ describe('<ToolGroupMessage />', () => {
},
);
});
describe('Manual Overflow Detection', () => {
it('detects overflow for string results exceeding available height', async () => {
const toolCalls = [
createToolCall({
resultDisplay: 'line 1\nline 2\nline 3\nline 4\nline 5',
}),
];
const { lastFrame, unmount, waitUntilReady } = renderWithProviders(
<ToolGroupMessage
{...baseProps}
item={{ id: 1, type: 'tool_group', tools: toolCalls }}
toolCalls={toolCalls}
availableTerminalHeight={6} // Very small height
isExpandable={true}
/>,
{
config: baseMockConfig,
settings: fullVerbositySettings,
useAlternateBuffer: true,
uiState: {
constrainHeight: true,
},
},
);
await waitUntilReady();
expect(lastFrame()?.toLowerCase()).toContain(
'press ctrl+o to show more lines',
);
unmount();
});
it('detects overflow for array results exceeding available height', async () => {
// resultDisplay when array is expected to be AnsiLine[]
// AnsiLine is AnsiToken[]
const toolCalls = [
createToolCall({
resultDisplay: Array(5).fill([{ text: 'line', fg: 'default' }]),
}),
];
const { lastFrame, unmount, waitUntilReady } = renderWithProviders(
<ToolGroupMessage
{...baseProps}
item={{ id: 1, type: 'tool_group', tools: toolCalls }}
toolCalls={toolCalls}
availableTerminalHeight={6}
isExpandable={true}
/>,
{
config: baseMockConfig,
settings: fullVerbositySettings,
useAlternateBuffer: true,
uiState: {
constrainHeight: true,
},
},
);
await waitUntilReady();
expect(lastFrame()?.toLowerCase()).toContain(
'press ctrl+o to show more lines',
);
unmount();
});
it('respects ACTIVE_SHELL_MAX_LINES for focused shell tools', async () => {
const toolCalls = [
createToolCall({
name: 'run_shell_command',
status: CoreToolCallStatus.Executing,
ptyId: 1,
resultDisplay: Array(20).fill('line').join('\n'), // 20 lines > 15 (limit)
}),
];
const { lastFrame, unmount, waitUntilReady } = renderWithProviders(
<ToolGroupMessage
{...baseProps}
item={{ id: 1, type: 'tool_group', tools: toolCalls }}
toolCalls={toolCalls}
availableTerminalHeight={100} // Plenty of terminal height
isExpandable={true}
/>,
{
config: baseMockConfig,
settings: fullVerbositySettings,
useAlternateBuffer: true,
uiState: {
constrainHeight: true,
activePtyId: 1,
embeddedShellFocused: true,
},
},
);
await waitUntilReady();
expect(lastFrame()?.toLowerCase()).toContain(
'press ctrl+o to show more lines',
);
unmount();
});
it('does not show expansion hint when content is within limits', async () => {
const toolCalls = [
createToolCall({
resultDisplay: 'small result',
}),
];
const { lastFrame, unmount, waitUntilReady } = renderWithProviders(
<ToolGroupMessage
{...baseProps}
item={{ id: 1, type: 'tool_group', tools: toolCalls }}
toolCalls={toolCalls}
availableTerminalHeight={20}
isExpandable={true}
/>,
{
config: baseMockConfig,
settings: fullVerbositySettings,
useAlternateBuffer: true,
uiState: {
constrainHeight: true,
},
},
);
await waitUntilReady();
expect(lastFrame()).not.toContain('Press Ctrl+O to show more lines');
unmount();
});
it('hides expansion hint when constrainHeight is false', async () => {
const toolCalls = [
createToolCall({
resultDisplay: 'line 1\nline 2\nline 3\nline 4\nline 5',
}),
];
const { lastFrame, unmount, waitUntilReady } = renderWithProviders(
<ToolGroupMessage
{...baseProps}
item={{ id: 1, type: 'tool_group', tools: toolCalls }}
toolCalls={toolCalls}
availableTerminalHeight={6}
isExpandable={true}
/>,
{
config: baseMockConfig,
settings: fullVerbositySettings,
useAlternateBuffer: true,
uiState: {
constrainHeight: false,
},
},
);
await waitUntilReady();
expect(lastFrame()).not.toContain('Press Ctrl+O to show more lines');
unmount();
});
it('isolates overflow hint in ASB mode (ignores global overflow state)', async () => {
// In this test, the tool output is SHORT (no local overflow).
// We will inject a dummy ID into the global overflow state.
// ToolGroupMessage should still NOT show the hint because it calculates
// overflow locally and passes it as a prop.
const toolCalls = [
createToolCall({
resultDisplay: 'short result',
}),
];
const { lastFrame, unmount, waitUntilReady, capturedOverflowActions } =
renderWithProviders(
<ToolGroupMessage
{...baseProps}
item={{ id: 1, type: 'tool_group', tools: toolCalls }}
toolCalls={toolCalls}
availableTerminalHeight={100}
isExpandable={true}
/>,
{
config: baseMockConfig,
settings: fullVerbositySettings,
useAlternateBuffer: true,
uiState: {
constrainHeight: true,
},
},
);
await waitUntilReady();
// Manually trigger a global overflow
act(() => {
expect(capturedOverflowActions).toBeDefined();
capturedOverflowActions!.addOverflowingId('unrelated-global-id');
});
// The hint should NOT appear because ToolGroupMessage is isolated by its prop logic
expect(lastFrame()).not.toContain('Press Ctrl+O to show more lines');
unmount();
});
});
});
@@ -17,18 +17,12 @@ import { ToolMessage } from './ToolMessage.js';
import { ShellToolMessage } from './ShellToolMessage.js';
import { theme } from '../../semantic-colors.js';
import { useConfig } from '../../contexts/ConfigContext.js';
import { isShellTool, isThisShellFocused } from './ToolShared.js';
import { isShellTool } from './ToolShared.js';
import {
shouldHideToolCall,
CoreToolCallStatus,
} from '@google/gemini-cli-core';
import { ShowMoreLines } from '../ShowMoreLines.js';
import { useUIState } from '../../contexts/UIStateContext.js';
import { useAlternateBuffer } from '../../hooks/useAlternateBuffer.js';
import {
calculateShellMaxLines,
calculateToolContentMaxLines,
} from '../../utils/toolLayoutUtils.js';
import { getToolGroupBorderAppearance } from '../../utils/borderStyles.js';
import { useSettings } from '../../contexts/SettingsContext.js';
@@ -83,13 +77,11 @@ export const ToolGroupMessage: React.FC<ToolGroupMessageProps> = ({
const config = useConfig();
const {
constrainHeight,
activePtyId,
embeddedShellFocused,
backgroundShells,
pendingHistoryItems,
} = useUIState();
const isAlternateBuffer = useAlternateBuffer();
const { borderColor, borderDimColor } = useMemo(
() =>
@@ -149,72 +141,6 @@ export const ToolGroupMessage: React.FC<ToolGroupMessageProps> = ({
const contentWidth = terminalWidth - TOOL_MESSAGE_HORIZONTAL_MARGIN;
/*
* ToolGroupMessage calculates its own overflow state locally and passes
* it as a prop to ShowMoreLines. This isolates it from global overflow
* reports in ASB mode, while allowing it to contribute to the global
* 'Toast' hint in Standard mode.
*
* Because of this prop-based isolation and the explicit mode-checks in
* AppContainer, we do not need to shadow the OverflowProvider here.
*/
const hasOverflow = useMemo(() => {
if (!availableTerminalHeightPerToolMessage) return false;
return visibleToolCalls.some((tool) => {
const isShellToolCall = isShellTool(tool.name);
const isFocused = isThisShellFocused(
tool.name,
tool.status,
tool.ptyId,
activePtyId,
embeddedShellFocused,
);
let maxLines: number | undefined;
if (isShellToolCall) {
maxLines = calculateShellMaxLines({
status: tool.status,
isAlternateBuffer,
isThisShellFocused: isFocused,
availableTerminalHeight: availableTerminalHeightPerToolMessage,
constrainHeight,
isExpandable,
});
}
// Standard tools and Shell tools both eventually use ToolResultDisplay's logic.
// ToolResultDisplay uses calculateToolContentMaxLines to find the final line budget.
const contentMaxLines = calculateToolContentMaxLines({
availableTerminalHeight: availableTerminalHeightPerToolMessage,
isAlternateBuffer,
maxLinesLimit: maxLines,
});
if (!contentMaxLines) return false;
if (typeof tool.resultDisplay === 'string') {
const text = tool.resultDisplay;
const hasTrailingNewline = text.endsWith('\n');
const contentText = hasTrailingNewline ? text.slice(0, -1) : text;
const lineCount = contentText.split('\n').length;
return lineCount > contentMaxLines;
}
if (Array.isArray(tool.resultDisplay)) {
return tool.resultDisplay.length > contentMaxLines;
}
return false;
});
}, [
visibleToolCalls,
availableTerminalHeightPerToolMessage,
activePtyId,
embeddedShellFocused,
isAlternateBuffer,
constrainHeight,
isExpandable,
]);
// If all tools are filtered out (e.g., in-progress AskUser tools, confirming tools),
// only render if we need to close a border from previous
// tool groups. borderBottomOverride=true means we must render the closing border;
@@ -307,12 +233,6 @@ export const ToolGroupMessage: React.FC<ToolGroupMessageProps> = ({
/>
)
}
{(borderBottomOverride ?? true) && visibleToolCalls.length > 0 && (
<ShowMoreLines
constrainHeight={constrainHeight && !!isExpandable}
isOverflowing={hasOverflow}
/>
)}
</Box>
);
@@ -8,21 +8,19 @@ import { describe, it, expect } from 'vitest';
import { ToolGroupMessage } from './ToolGroupMessage.js';
import { renderWithProviders } from '../../../test-utils/render.js';
import { StreamingState, type IndividualToolCallDisplay } from '../../types.js';
import { OverflowProvider } from '../../contexts/OverflowContext.js';
import { waitFor } from '../../../test-utils/async.js';
import { CoreToolCallStatus } from '@google/gemini-cli-core';
import { useOverflowState } from '../../contexts/OverflowContext.js';
describe('ToolOverflowConsistencyChecks: ToolGroupMessage and ToolResultDisplay synchronization', () => {
it('should ensure explicit hasOverflow calculation is consistent with ToolResultDisplay truncation in Alternate Buffer (ASB) mode', async () => {
it('should ensure ToolGroupMessage correctly reports overflow to the global state in Alternate Buffer (ASB) mode', async () => {
/**
* Logic:
* 1. availableTerminalHeight(13) - staticHeight(3) = 10 lines per tool.
* 2. ASB mode reserves 1 + 6 = 7 lines.
* 3. Line budget = 10 - 7 = 3 lines.
* 4. 5 lines of output > 3 lines budget => hasOverflow should be TRUE.
* 1. availableTerminalHeight(13) - staticHeight(1) - ASB Reserved(6) = 6 lines per tool.
* 2. 10 lines of output > 6 lines budget => hasOverflow should be TRUE.
*/
const lines = Array.from({ length: 5 }, (_, i) => `line ${i + 1}`);
const lines = Array.from({ length: 10 }, (_, i) => `line ${i + 1}`);
const resultDisplay = lines.join('\n');
const toolCalls: IndividualToolCallDisplay[] = [
@@ -36,8 +34,15 @@ describe('ToolOverflowConsistencyChecks: ToolGroupMessage and ToolResultDisplay
},
];
const { lastFrame } = renderWithProviders(
<OverflowProvider>
let latestOverflowState: ReturnType<typeof useOverflowState>;
const StateCapture = () => {
latestOverflowState = useOverflowState();
return null;
};
const { unmount, waitUntilReady } = renderWithProviders(
<>
<StateCapture />
<ToolGroupMessage
item={{ id: 1, type: 'tool_group', tools: toolCalls }}
toolCalls={toolCalls}
@@ -45,7 +50,7 @@ describe('ToolOverflowConsistencyChecks: ToolGroupMessage and ToolResultDisplay
terminalWidth={80}
isExpandable={true}
/>
</OverflowProvider>,
</>,
{
uiState: {
streamingState: StreamingState.Idle,
@@ -55,24 +60,26 @@ describe('ToolOverflowConsistencyChecks: ToolGroupMessage and ToolResultDisplay
},
);
// In ASB mode, the hint should appear because hasOverflow is now correctly calculated.
await waitFor(() =>
expect(lastFrame()?.toLowerCase()).toContain(
'press ctrl+o to show more lines',
),
);
await waitUntilReady();
// To verify that the overflow state was indeed updated by the Scrollable component.
await waitFor(() => {
expect(latestOverflowState?.overflowingIds.size).toBeGreaterThan(0);
});
unmount();
});
it('should ensure explicit hasOverflow calculation is consistent with ToolResultDisplay truncation in Standard mode', async () => {
it('should ensure ToolGroupMessage correctly reports overflow in Standard mode', async () => {
/**
* Logic:
* 1. availableTerminalHeight(13) - staticHeight(3) = 10 lines per tool.
* 2. Standard mode reserves 1 + 2 = 3 lines.
* 3. Line budget = 10 - 3 = 7 lines.
* 4. 9 lines of output > 7 lines budget => hasOverflow should be TRUE.
* 1. availableTerminalHeight(13) passed to ToolGroupMessage.
* 2. ToolGroupMessage subtracts its static height (2) => 11 lines available for tools.
* 3. ToolResultDisplay gets 11 lines, subtracts static height (1) and Standard Reserved (2) => 8 lines.
* 4. 15 lines of output > 8 lines budget => hasOverflow should be TRUE.
*/
const lines = Array.from({ length: 9 }, (_, i) => `line ${i + 1}`);
const lines = Array.from({ length: 15 }, (_, i) => `line ${i + 1}`);
const resultDisplay = lines.join('\n');
const toolCalls: IndividualToolCallDisplay[] = [
@@ -86,16 +93,14 @@ describe('ToolOverflowConsistencyChecks: ToolGroupMessage and ToolResultDisplay
},
];
const { lastFrame } = renderWithProviders(
<OverflowProvider>
<ToolGroupMessage
item={{ id: 1, type: 'tool_group', tools: toolCalls }}
toolCalls={toolCalls}
availableTerminalHeight={13}
terminalWidth={80}
isExpandable={true}
/>
</OverflowProvider>,
const { lastFrame, unmount, waitUntilReady } = renderWithProviders(
<ToolGroupMessage
item={{ id: 1, type: 'tool_group', tools: toolCalls }}
toolCalls={toolCalls}
availableTerminalHeight={13}
terminalWidth={80}
isExpandable={true}
/>,
{
uiState: {
streamingState: StreamingState.Idle,
@@ -105,11 +110,11 @@ describe('ToolOverflowConsistencyChecks: ToolGroupMessage and ToolResultDisplay
},
);
await waitUntilReady();
// Verify truncation is occurring (standard mode uses MaxSizedBox)
await waitFor(() => expect(lastFrame()).toContain('hidden (Ctrl+O'));
// In Standard mode, ToolGroupMessage calculates hasOverflow correctly now.
// While Standard mode doesn't render the inline hint (ShowMoreLines returns null),
// the logic inside ToolGroupMessage is now synchronized.
unmount();
});
});
@@ -236,6 +236,7 @@ export const ToolResultDisplay: React.FC<ToolResultDisplayProps> = ({
maxHeight={maxLines ?? availableHeight}
hasFocus={hasFocus} // Allow scrolling via keyboard (Shift+Up/Down)
scrollToBottom={true}
reportOverflow={true}
>
{content}
</Scrollable>
@@ -1,79 +0,0 @@
/**
* @license
* Copyright 2026 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { describe, it, expect } from 'vitest';
import { ToolGroupMessage } from './ToolGroupMessage.js';
import { renderWithProviders } from '../../../test-utils/render.js';
import { StreamingState, type IndividualToolCallDisplay } from '../../types.js';
import { waitFor } from '../../../test-utils/async.js';
import { CoreToolCallStatus } from '@google/gemini-cli-core';
describe('ToolResultDisplay Overflow', () => {
it('should display "press ctrl-o" hint when content overflows in ToolGroupMessage', async () => {
// Large output that will definitely overflow
const lines = [];
for (let i = 0; i < 50; i++) {
lines.push(`line ${i + 1}`);
}
const resultDisplay = lines.join('\n');
const toolCalls: IndividualToolCallDisplay[] = [
{
callId: 'call-1',
name: 'test-tool',
description: 'a test tool',
status: CoreToolCallStatus.Success,
resultDisplay,
confirmationDetails: undefined,
},
];
const { lastFrame, waitUntilReady } = renderWithProviders(
<ToolGroupMessage
item={{ id: 1, type: 'tool_group', tools: toolCalls }}
toolCalls={toolCalls}
availableTerminalHeight={15} // Small height to force overflow
terminalWidth={80}
isExpandable={true}
/>,
{
uiState: {
streamingState: StreamingState.Idle,
constrainHeight: true,
},
useAlternateBuffer: true,
},
);
await waitUntilReady();
// In ASB mode the overflow hint can render before the scroll position
// settles. Wait for both the hint and the tail of the content so this
// snapshot is deterministic across slower CI runners.
await waitFor(() => {
const frame = lastFrame();
expect(frame).toBeDefined();
expect(frame?.toLowerCase()).toContain('press ctrl+o to show more lines');
expect(frame).toContain('line 50');
});
const frame = lastFrame();
expect(frame).toBeDefined();
if (frame) {
expect(frame.toLowerCase()).toContain('press ctrl+o to show more lines');
// Ensure it's AFTER the bottom border
const linesOfOutput = frame.split('\n');
const bottomBorderIndex = linesOfOutput.findLastIndex((l) =>
l.includes('╰─'),
);
const hintIndex = linesOfOutput.findIndex((l) =>
l.toLowerCase().includes('press ctrl+o to show more lines'),
);
expect(hintIndex).toBeGreaterThan(bottomBorderIndex);
expect(frame).toMatchSnapshot();
}
});
});