feat: sidebar CSS inspector — element picker, box model, rule cascade, quick edit

Extension changes for the visual CSS inspector:
- inspector.js: element picker with hover highlight, CSS selector generation,
  basic mode fallback (getComputedStyle + CSSOM), page alteration handlers
- inspector.css: picker overlay styles (blue highlight + tooltip)
- background.js: inspector message routing (picker <-> server <-> sidepanel)
- sidepanel: Inspector tab with box model viz (gstack palette), matched rules
  with specificity badges, computed styles, click-to-edit quick edit,
  Send to Agent/Code button, empty/loading/error states

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Garry Tan
2026-03-29 20:25:36 -07:00
parent e084ca90fd
commit f395f58406
7 changed files with 1624 additions and 1 deletions
+490
View File
@@ -697,6 +697,496 @@ footer {
flex-shrink: 0;
}
/* ─── Inspector Tab ──────────────────────────────────── */
.inspector-toolbar {
display: flex;
align-items: center;
gap: 8px;
padding: 6px 10px;
background: var(--bg-surface);
border-bottom: 1px solid var(--border);
flex-shrink: 0;
}
.inspector-pick-btn {
display: flex;
align-items: center;
gap: 4px;
height: 28px;
padding: 0 10px;
background: none;
border: 1px solid var(--amber-500);
border-radius: var(--radius-sm);
color: var(--amber-500);
font-family: var(--font-system);
font-size: 12px;
font-weight: 500;
cursor: pointer;
transition: all 150ms;
flex-shrink: 0;
}
.inspector-pick-btn:hover {
background: rgba(245, 158, 11, 0.1);
color: var(--amber-400);
}
.inspector-pick-btn.active {
background: var(--amber-500);
color: #000;
}
.inspector-pick-icon {
font-size: 14px;
line-height: 1;
}
.inspector-selected {
font-family: var(--font-mono);
font-size: 11px;
color: var(--text-body);
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
flex: 1;
min-width: 0;
}
.inspector-mode-badge {
font-family: var(--font-mono);
font-size: 10px;
padding: 1px 6px;
border-radius: var(--radius-sm);
flex-shrink: 0;
}
.inspector-mode-badge.basic {
background: var(--zinc-800);
color: var(--zinc-400);
}
.inspector-mode-badge.cdp {
background: rgba(34, 197, 94, 0.15);
color: var(--success);
}
/* Inspector content area */
.inspector-content {
flex: 1;
overflow-y: auto;
overflow-x: hidden;
}
/* Empty state */
.inspector-empty {
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
padding: 40px 24px;
text-align: center;
gap: 6px;
}
.inspector-empty-icon {
font-size: 24px;
color: var(--zinc-600);
margin-bottom: 4px;
}
.inspector-empty p {
color: var(--zinc-400);
font-size: 13px;
margin: 0;
}
.inspector-empty .muted {
color: var(--zinc-600);
font-size: 12px;
}
/* Loading state */
.inspector-loading {
padding: 16px 12px;
}
.inspector-loading-text {
font-size: 12px;
color: var(--amber-500);
margin-bottom: 12px;
animation: pulse 2s ease-in-out infinite;
}
.inspector-skeleton {
display: flex;
flex-direction: column;
gap: 8px;
}
.inspector-skeleton-bar {
height: 12px;
background: var(--zinc-800);
border-radius: var(--radius-sm);
animation: shimmer 1.5s ease-in-out infinite;
}
.inspector-skeleton-bar:nth-child(1) { width: 80%; }
.inspector-skeleton-bar:nth-child(2) { width: 60%; }
.inspector-skeleton-bar:nth-child(3) { width: 70%; }
@keyframes shimmer {
0%, 100% { opacity: 0.3; }
50% { opacity: 0.7; }
}
/* Error state */
.inspector-error {
padding: 16px 12px;
color: var(--error);
font-size: 12px;
font-family: var(--font-mono);
}
/* Inspector sections */
.inspector-section {
border-bottom: 1px solid var(--border-subtle);
}
.inspector-section-header {
font-family: var(--font-system);
font-size: 13px;
font-weight: 600;
color: var(--zinc-400);
padding: 8px 12px 4px;
}
.inspector-section-toggle {
display: flex;
align-items: center;
gap: 6px;
width: 100%;
padding: 8px 12px;
background: none;
border: none;
font-family: var(--font-system);
font-size: 13px;
font-weight: 600;
color: var(--zinc-400);
cursor: pointer;
text-align: left;
transition: color 150ms;
}
.inspector-section-toggle:hover {
color: var(--text-body);
}
.inspector-toggle-arrow {
font-size: 10px;
color: var(--zinc-400);
flex-shrink: 0;
width: 12px;
}
.inspector-section-body {
padding: 4px 12px 8px;
}
.inspector-section-body.collapsed {
display: none;
}
.inspector-rule-count {
font-size: 11px;
font-weight: 400;
color: var(--zinc-600);
margin-left: 4px;
}
.inspector-no-data {
color: var(--zinc-600);
font-size: 11px;
font-style: italic;
padding: 4px 0;
}
/* ─── Box Model ──────────────────────────────────────── */
.inspector-boxmodel {
padding: 8px 12px 12px;
}
.boxmodel-margin,
.boxmodel-border,
.boxmodel-padding,
.boxmodel-content {
position: relative;
display: flex;
align-items: center;
justify-content: center;
border: 1px dashed;
text-align: center;
}
.boxmodel-margin {
background: rgba(245, 158, 11, 0.08);
border-color: rgba(245, 158, 11, 0.3);
padding: 14px 20px;
border-radius: var(--radius-sm);
}
.boxmodel-border {
background: rgba(161, 161, 170, 0.08);
border-color: rgba(161, 161, 170, 0.3);
padding: 14px 20px;
width: 100%;
}
.boxmodel-padding {
background: rgba(34, 197, 94, 0.08);
border-color: rgba(34, 197, 94, 0.3);
padding: 14px 20px;
width: 100%;
}
.boxmodel-content {
background: rgba(59, 130, 246, 0.08);
border-color: rgba(59, 130, 246, 0.3);
padding: 8px 12px;
width: 100%;
min-height: 28px;
}
.boxmodel-content span {
font-family: var(--font-mono);
font-size: 11px;
color: var(--text-body);
}
.boxmodel-label {
position: absolute;
top: 1px;
left: 4px;
font-family: var(--font-mono);
font-size: 10px;
color: var(--zinc-400);
pointer-events: none;
}
.boxmodel-value {
position: absolute;
font-family: var(--font-mono);
font-size: 11px;
color: var(--text-body);
}
.boxmodel-value.boxmodel-top { top: 1px; left: 50%; transform: translateX(-50%); }
.boxmodel-value.boxmodel-right { right: 4px; top: 50%; transform: translateY(-50%); }
.boxmodel-value.boxmodel-bottom { bottom: 1px; left: 50%; transform: translateX(-50%); }
.boxmodel-value.boxmodel-left { left: 4px; top: 50%; transform: translateY(-50%); }
/* ─── Matched Rules ──────────────────────────────────── */
.inspector-rule {
padding: 6px 0;
border-bottom: 1px solid var(--border-subtle);
}
.inspector-rule:last-child {
border-bottom: none;
}
.inspector-rule-header {
display: flex;
align-items: center;
justify-content: space-between;
gap: 8px;
margin-bottom: 2px;
}
.inspector-selector {
font-family: var(--font-mono);
font-size: 12px;
color: var(--amber-400);
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
max-width: 35ch;
}
.inspector-specificity {
font-family: var(--font-mono);
font-size: 10px;
background: var(--zinc-600);
color: var(--zinc-400);
padding: 0 4px;
border-radius: var(--radius-sm);
flex-shrink: 0;
}
.inspector-rule-props {
padding-left: 12px;
}
.inspector-prop {
font-family: var(--font-mono);
font-size: 12px;
line-height: 1.6;
}
.inspector-prop.overridden {
text-decoration: line-through;
opacity: 0.5;
}
.inspector-prop-name {
color: var(--zinc-400);
}
.inspector-prop-value {
color: var(--text-body);
}
.inspector-important {
color: var(--error);
font-size: 10px;
}
.inspector-rule-source {
font-family: var(--font-mono);
font-size: 11px;
color: var(--zinc-600);
margin-top: 2px;
}
/* UA rules */
.inspector-ua-rules {
margin-top: 4px;
}
.inspector-ua-toggle {
display: flex;
align-items: center;
gap: 4px;
background: none;
border: none;
font-family: var(--font-mono);
font-size: 11px;
color: var(--zinc-600);
cursor: pointer;
padding: 4px 0;
transition: color 150ms;
}
.inspector-ua-toggle:hover {
color: var(--zinc-400);
}
.inspector-ua-body.collapsed {
display: none;
}
/* ─── Computed Styles ────────────────────────────────── */
.inspector-computed-row {
font-family: var(--font-mono);
font-size: 12px;
line-height: 1.6;
padding: 0 0 0 4px;
}
.inspector-computed-row .inspector-prop-name {
color: var(--zinc-400);
}
.inspector-computed-row .inspector-prop-value {
color: var(--text-body);
}
/* ─── Quick Edit ─────────────────────────────────────── */
.inspector-quickedit-list {
display: flex;
flex-direction: column;
gap: 2px;
}
.inspector-quickedit-row {
font-family: var(--font-mono);
font-size: 12px;
line-height: 1.6;
display: flex;
align-items: center;
gap: 4px;
}
.inspector-quickedit-row .inspector-prop-name {
color: var(--zinc-400);
flex-shrink: 0;
}
.inspector-quickedit-value {
color: var(--text-body);
cursor: pointer;
padding: 1px 4px;
border-radius: 2px;
transition: background 150ms;
min-width: 40px;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
.inspector-quickedit-value:hover {
background: var(--bg-hover);
}
.inspector-quickedit-input {
font-family: var(--font-mono);
font-size: 12px;
background: var(--bg-base);
border: 1px solid var(--amber-500);
border-radius: 2px;
color: var(--text-heading);
padding: 1px 4px;
outline: none;
width: 100%;
}
/* ─── Send to Agent ──────────────────────────────────── */
.inspector-send {
padding: 8px 12px;
background: var(--bg-surface);
border-top: 1px solid var(--border);
flex-shrink: 0;
position: sticky;
bottom: 0;
}
.inspector-send-btn {
width: 100%;
height: 32px;
background: var(--amber-500);
border: none;
border-radius: var(--radius-md);
color: #000;
font-family: var(--font-system);
font-size: 13px;
font-weight: 600;
cursor: pointer;
transition: all 150ms;
}
.inspector-send-btn:hover {
background: var(--amber-400);
}
.inspector-send-btn:active {
transform: scale(0.98);
}
/* ─── Accessibility ───────────────────────────────────── */
:focus-visible {
outline: 2px solid var(--amber-500);