Files
LEDMatrix/web_interface/static/v3/js/composer/composer-app.js
T
ChuckBuildsandClaude Opus 5 f0bef7784c fix(composer): eight editor bugs from review
All confirmed by reading the code rather than taken on trust.

Saved designs restored onto the wrong canvas. _buildPayload writes the
size as `preset`; _applyState read `state.currentPreset`, which is never
present, so changePreset(undefined) hit its `if (!preset) return` and did
nothing -- silently. A 256x64 design reopened at 128x32 with every
element misplaced. importDesign passed no size key at all, same result.
Both go through a new applyPresetLabel(), which also handles the custom
labels setCustomSize() writes ("200x50"): those are deliberately absent
from DISPLAY_PRESETS, so changePreset alone could never round-trip them.

Keyboard shortcuts hijacked text fields. The `inInput` guard sat below
the Ctrl/Cmd block, under a comment claiming combos "work everywhere".
In any input, Ctrl+C copied the selected *element* -- preventDefault
stopping the real copy -- Ctrl+V pasted an element, Ctrl+A could not
select the field contents, and Tab always moved the element selection,
so keyboard users could not reach the next input. Guard moved above both
blocks, and it now covers contenteditable too.

Resize handles were advertised on five shapes that ignored them. The
canvas drew handles for six element types; the editor gated resize and
hover on `type === 'rectangle'`. The list was also duplicated inside the
canvas. One exported RESIZABLE_TYPES now feeds all four sites.

Lines jumped on drag. addElement assigns x/y *before* spreading
ELEMENT_DEFAULTS, and the line defaults define only x0/y0 -- so a line
carries both, with x at canvas/4 and x0 at 0. Drag and nudge move x0/y0
only, so _getStoredPos preferring `x` handed the drag a base it never
updates.

Colour-picker edits were lost on reload. onColorChange mutated the
element but never set isDirty or called _snapshot, and _debouncedAutosave
only runs from _snapshot. applyPaletteColor did both; they match now.

Also: section elements drew nothing and reported a 0x0 box, so adding
"Section Label" from the palette looked broken and the element was
selectable only through the 3px hit-test padding -- they now draw their
label, with the bounding box using the same font fallback as the draw
call so the two agree. The gauge inset its arc radius by lw/2 where lw is
LED pixels and the radius is canvas pixels, then stroked at lw*s, so the
arc spilled outside its own bounding box at any scale above 1. And the
plugin id is encodeURIComponent'd before it becomes part of a request
path.

Verified: composer-app.js and composer-canvas.js parse cleanly under
tree-sitter (esprima cannot read this codebase -- it predates ??, and
fails identically on the unmodified files). Every symbol referenced
across module boundaries checked to exist. 156 Python composer tests
pass. The static-audit failure is the same 13 classes as before, all
defined on main and absent only because this branch is behind; nothing
here touches CSS or templates.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01STMbQE4YctTacQXfbYqKuW
2026-08-21 20:14:52 -04:00

1398 lines
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/**
* composerApp() — AlpineJS component for the Plugin Composer.
*
* Key architecture notes:
* - All mutations call _snapshot() for undo/redo support
* - Elements with anchors: drag stores offset from anchor, not raw px
* - localStorage autosaves on every mutation (debounced 1.5s)
* - composer_version in payload allows future server-side migration
*/
// ── Template library ─────────────────────────────────────────────────────────
const COMPOSER_TEMPLATES = [
{
id: 'blank',
label: 'Blank Canvas',
description: 'Start from scratch',
icon: 'fas fa-plus-square',
preset: '128×32',
elements: [],
dataModel: { configVars: [], dataSources: [], computedVars: [] },
},
{
id: 'clock',
label: 'Digital Clock',
description: 'Large clock with date below a divider',
icon: 'fas fa-clock',
preset: '128×32',
elements: [
{ id:1, type:'clock', x:44, y:4, format:'%H:%M', font:'press_start', r:100, g:255, b:100, xAnchor:null, yAnchor:null, minWidth:0, label:'time', conditions:[] },
{ id:2, type:'divider', x:0, y:18, orientation:'horizontal', r:50, g:50, b:50, xAnchor:null, yAnchor:null, minWidth:0, label:'', conditions:[] },
{ id:3, type:'clock', x:32, y:22, format:'%A %b %d', font:'four_by_six', r:150, g:150, b:150, xAnchor:null, yAnchor:null, minWidth:0, label:'date', conditions:[] },
],
dataModel: { configVars:[], dataSources:[], computedVars:[] },
},
{
id: 'announcement',
label: 'Announcement',
description: 'Static title + configurable message text',
icon: 'fas fa-bullhorn',
preset: '128×32',
elements: [
{ id:1, type:'text', x:4, y:2, text:'ANNOUNCEMENT', font:'four_by_six', r:255, g:200, b:0, xAnchor:null, yAnchor:null, minWidth:0, label:'title', conditions:[] },
{ id:2, type:'divider', x:0, y:11, orientation:'horizontal', r:80, g:80, b:0, xAnchor:null, yAnchor:null, minWidth:0, label:'', conditions:[] },
{ id:3, type:'dynamic_text', x:4, y:15, binding:{source:'config',key:'message',format:null}, font:'four_by_six', r:255, g:255, b:255, xAnchor:null, yAnchor:null, minWidth:0, label:'message', conditions:[] },
],
dataModel: {
configVars:[{ key:'message', label:'Message', type:'string', default:'Hello World!', description:'Message to display' }],
dataSources:[], computedVars:[],
},
},
{
id: 'scoreboard',
label: 'Scoreboard',
description: 'Two-team scores with status line',
icon: 'fas fa-trophy',
preset: '128×32',
elements: [
{ id:1, type:'dynamic_text', x:2, y:2, binding:{source:'config',key:'home_team',format:null}, font:'four_by_six', r:255,g:255,b:255, xAnchor:null,yAnchor:null,minWidth:0, label:'home team', conditions:[] },
{ id:2, type:'dynamic_text', x:2, y:12, binding:{source:'config',key:'home_score',format:null}, font:'press_start', r:255,g:220,b:50, xAnchor:null,yAnchor:null,minWidth:0, label:'home score', conditions:[] },
{ id:3, type:'divider', x:64, y:0, orientation:'vertical', r:60,g:60,b:60, xAnchor:null,yAnchor:null,minWidth:0, label:'', conditions:[] },
{ id:4, type:'dynamic_text', x:68, y:2, binding:{source:'config',key:'away_team',format:null}, font:'four_by_six', r:200,g:200,b:255, xAnchor:null,yAnchor:null,minWidth:0, label:'away team', conditions:[] },
{ id:5, type:'dynamic_text', x:68, y:12, binding:{source:'config',key:'away_score',format:null}, font:'press_start', r:100,g:180,b:255, xAnchor:null,yAnchor:null,minWidth:0, label:'away score', conditions:[] },
{ id:6, type:'dynamic_text', x:44, y:25, binding:{source:'config',key:'game_status',format:null}, font:'four_by_six', r:150,g:150,b:150, xAnchor:null,yAnchor:null,minWidth:0, label:'status', conditions:[] },
],
dataModel: {
configVars:[
{key:'home_team', label:'Home Team', type:'string', default:'HOME', description:'Home team abbreviation'},
{key:'home_score', label:'Home Score', type:'string', default:'0', description:'Home team score'},
{key:'away_team', label:'Away Team', type:'string', default:'AWAY', description:'Away team abbreviation'},
{key:'away_score', label:'Away Score', type:'string', default:'0', description:'Away team score'},
{key:'game_status',label:'Game Status', type:'string', default:'LIVE', description:'Status label'},
],
dataSources:[], computedVars:[],
},
},
{
id: 'weather',
label: 'Weather Card',
description: 'Temperature + condition + location',
icon: 'fas fa-cloud-sun',
preset: '128×32',
elements: [
{ id:1, type:'dynamic_text', x:2, y:4, binding:{source:'config',key:'temperature',format:null}, font:'press_start', r:255,g:140,b:40, xAnchor:null,yAnchor:null,minWidth:0, label:'temp', conditions:[] },
{ id:2, type:'divider', x:0, y:16, orientation:'horizontal', r:50,g:50,b:80, xAnchor:null,yAnchor:null,minWidth:0, label:'', conditions:[] },
{ id:3, type:'dynamic_text', x:2, y:20, binding:{source:'config',key:'condition',format:null}, font:'four_by_six', r:180,g:200,b:255, xAnchor:null,yAnchor:null,minWidth:0, label:'condition', conditions:[] },
{ id:4, type:'dynamic_text', x:80, y:20, binding:{source:'config',key:'location',format:null}, font:'four_by_six', r:120,g:120,b:120, xAnchor:null,yAnchor:null,minWidth:0, label:'location', conditions:[] },
],
dataModel: {
configVars:[
{key:'temperature', label:'Temperature', type:'string', default:'72°F', description:'Current temperature'},
{key:'condition', label:'Condition', type:'string', default:'Sunny', description:'Weather condition'},
{key:'location', label:'Location', type:'string', default:'My City', description:'City name'},
],
dataSources:[], computedVars:[],
},
},
{
id: 'crypto',
label: 'Crypto Ticker',
description: 'Asset price + 24h change percentage',
icon: 'fas fa-chart-line',
preset: '128×32',
elements: [
{ id:1, type:'dynamic_text', x:2, y:2, binding:{source:'config',key:'ticker',format:null}, font:'press_start', r:255,g:165,b:0, xAnchor:null,yAnchor:null,minWidth:0, label:'ticker', conditions:[] },
{ id:2, type:'dynamic_text', x:2, y:16, binding:{source:'config',key:'price',format:null}, font:'press_start', r:255,g:255,b:255, xAnchor:null,yAnchor:null,minWidth:0, label:'price', conditions:[] },
{ id:3, type:'dynamic_text', x:88, y:16, binding:{source:'config',key:'change_pct',format:null}, font:'four_by_six', r:100,g:255,b:100, xAnchor:null,yAnchor:null,minWidth:0, label:'change', conditions:[] },
],
dataModel: {
configVars:[
{key:'ticker', label:'Ticker', type:'string', default:'BTC', description:'Asset symbol'},
{key:'price', label:'Price', type:'string', default:'$0.00', description:'Asset price'},
{key:'change_pct', label:'Change %', type:'string', default:'+0.00%', description:'24h change'},
],
dataSources:[], computedVars:[],
},
},
{
id: 'system',
label: 'System Monitor',
description: 'CPU, memory, and IP address',
icon: 'fas fa-server',
preset: '128×32',
elements: [
{ id:1, type:'text', x:2, y:2, text:'CPU', font:'four_by_six', r:120,g:120,b:120, xAnchor:null,yAnchor:null,minWidth:0, label:'', conditions:[] },
{ id:2, type:'dynamic_text', x:22, y:2, binding:{source:'config',key:'cpu_usage',format:null}, font:'four_by_six', r:100,g:255,b:100, xAnchor:null,yAnchor:null,minWidth:0, label:'cpu', conditions:[] },
{ id:3, type:'text', x:2, y:12, text:'MEM', font:'four_by_six', r:120,g:120,b:120, xAnchor:null,yAnchor:null,minWidth:0, label:'', conditions:[] },
{ id:4, type:'dynamic_text', x:22, y:12, binding:{source:'config',key:'mem_usage',format:null}, font:'four_by_six', r:100,g:180,b:255, xAnchor:null,yAnchor:null,minWidth:0, label:'mem', conditions:[] },
{ id:5, type:'text', x:2, y:22, text:'IP', font:'four_by_six', r:120,g:120,b:120, xAnchor:null,yAnchor:null,minWidth:0, label:'', conditions:[] },
{ id:6, type:'dynamic_text', x:14, y:22, binding:{source:'config',key:'ip_address',format:null}, font:'four_by_six', r:255,g:255,b:150, xAnchor:null,yAnchor:null,minWidth:0, label:'ip', conditions:[] },
],
dataModel: {
configVars:[
{key:'cpu_usage', label:'CPU %', type:'string', default:'0%', description:'CPU usage'},
{key:'mem_usage', label:'Memory %', type:'string', default:'0%', description:'Memory usage'},
{key:'ip_address', label:'IP Address',type:'string', default:'0.0.0.0', description:'Network IP'},
],
dataSources:[], computedVars:[],
},
},
{
id: 'split_panel',
label: 'Split Panel',
description: 'Left label + right value, divided',
icon: 'fas fa-columns',
preset: '128×32',
elements: [
{ id:1, type:'dynamic_text', x:2, y:4, binding:{source:'config',key:'left_label',format:null}, font:'four_by_six', r:180,g:180,b:180, xAnchor:null,yAnchor:null,minWidth:0, label:'label', conditions:[] },
{ id:2, type:'divider', x:64, y:0, orientation:'vertical', r:60,g:60,b:60, xAnchor:null,yAnchor:null,minWidth:0, label:'', conditions:[] },
{ id:3, type:'dynamic_text', x:68, y:4, binding:{source:'config',key:'right_value',format:null}, font:'press_start', r:255,g:255,b:255, xAnchor:null,yAnchor:null,minWidth:0, label:'value', conditions:[] },
],
dataModel: {
configVars:[
{key:'left_label', label:'Label', type:'string', default:'LABEL', description:'Left panel label'},
{key:'right_value', label:'Value', type:'string', default:'--', description:'Right panel value'},
],
dataSources:[], computedVars:[],
},
},
];
// ── LED display color palette ────────────────────────────────────────────────
const LED_PALETTE = [
{ label: 'White', hex: '#ffffff', r: 255, g: 255, b: 255 },
{ label: 'Red', hex: '#ff2020', r: 255, g: 32, b: 32 },
{ label: 'Green', hex: '#20ff40', r: 32, g: 255, b: 64 },
{ label: 'Blue', hex: '#4060ff', r: 64, g: 96, b: 255 },
{ label: 'Yellow', hex: '#ffee00', r: 255, g: 238, b: 0 },
{ label: 'Orange', hex: '#ff8000', r: 255, g: 128, b: 0 },
{ label: 'Cyan', hex: '#00eeff', r: 0, g: 238, b: 255 },
{ label: 'Magenta', hex: '#ff00cc', r: 255, g: 0, b: 204 },
{ label: 'Amber', hex: '#ffb400', r: 255, g: 180, b: 0 },
{ label: 'Dim white', hex: '#888888', r: 136, g: 136, b: 136 },
{ label: 'Dark gray', hex: '#444444', r: 68, g: 68, b: 68 },
{ label: 'Off/Black', hex: '#000000', r: 0, g: 0, b: 0 },
];
// ── Autosave helpers ─────────────────────────────────────────────────────────
const LS_KEY = 'ledmatrix_composer_draft';
let _autosaveTimer = null;
function _debouncedAutosave(payload) {
clearTimeout(_autosaveTimer);
_autosaveTimer = setTimeout(() => {
try { localStorage.setItem(LS_KEY, JSON.stringify(payload)); } catch (_) {}
}, 1500);
}
// ── Main component ───────────────────────────────────────────────────────────
function composerApp() {
return {
// ── Plugin metadata ───────────────────────────────────────────────
metadata: {
id: '',
name: '',
author: '',
version: '1.0.0',
description: '',
category: 'custom',
display_duration: 15,
update_interval: 60,
api_requirements: [],
bgColor: { r: 0, g: 0, b: 0 },
},
// ── Canvas / display preset ───────────────────────────────────────
SCALE: 4,
MATRIX_W: 128,
MATRIX_H: 32,
currentPreset: '128×32',
// ── Elements ──────────────────────────────────────────────────────
elements: [],
_nextId: 1,
// ── Data model ───────────────────────────────────────────────────
dataModel: {
configVars: [],
dataSources: [],
computedVars: [],
},
// ── Undo/redo ─────────────────────────────────────────────────────
_history: [],
_historyIndex: -1,
// ── Selection & interaction ───────────────────────────────────────
selectedId: null,
_drag: { active: false },
_resize: { active: false },
// ── Canvas options ────────────────────────────────────────────────
snapToGrid: false,
snapSize: 4,
// ── Clipboard ─────────────────────────────────────────────────────
_clipboard: null,
_styleClipboard: null,
// ── UI state ──────────────────────────────────────────────────────
isDirty: false,
statusMsg: '',
statusType: 'info',
generateStatus: 'idle',
installStatus: 'idle',
showGridOverlay: true,
showGuides: false,
blinkAnimating: false,
_blinkPhase: false,
_blinkTimer: null,
_animTick: 0,
_previewValues: {},
showHelpModal: false,
_recentColors: [],
showRuler: false,
showConfigVarModal: false,
showOpenModal: false,
showTemplateModal: false,
showCodeModal: false,
_idAutoGenerated: true,
hoverInfo: '',
installedPlugins: [],
loadPluginsStatus: 'idle',
codeFiles: {},
codeTab: 'manager.py',
loadingCode: false,
newConfigVar: { key: '', label: '', type: 'string', default: '', description: '' },
// ── Computed ──────────────────────────────────────────────────────
get selectedElement() {
return this.elements.find(e => e.id === this.selectedId) ?? null;
},
get canExport() {
return this.metadata.name.trim() && this.metadata.id.trim() && this.elements.length > 0;
},
get canUndo() { return this._historyIndex > 0; },
get canRedo() { return this._historyIndex < this._history.length - 1; },
get templates() { return COMPOSER_TEMPLATES; },
get displayPresets() { return window.ComposerCanvas.DISPLAY_PRESETS; },
get palette() { return LED_PALETTE; },
// ── Pre-made variable library ─────────────────────────────────────
preMadeVarCategories: [
{ label: 'Display', vars: [
{key:'title_text', label:'Title', type:'string', default:'My Plugin', description:'Main title'},
{key:'subtitle', label:'Subtitle', type:'string', default:'', description:'Secondary line'},
{key:'message', label:'Message', type:'string', default:'Hello!', description:'Dynamic message'},
]},
{ label: 'Sports / Score', vars: [
{key:'home_score', label:'Home Score', type:'string', default:'0', description:'Home team score'},
{key:'away_score', label:'Away Score', type:'string', default:'0', description:'Away team score'},
{key:'home_team', label:'Home Team', type:'string', default:'HOME', description:'Home team abbr'},
{key:'away_team', label:'Away Team', type:'string', default:'AWAY', description:'Away team abbr'},
{key:'game_status', label:'Game Status', type:'string', default:'LIVE', description:'Status label'},
{key:'period', label:'Period', type:'string', default:'1st', description:'Period/quarter'},
{key:'time_left', label:'Time Left', type:'string', default:'15:00',description:'Game clock'},
]},
{ label: 'Weather', vars: [
{key:'temperature', label:'Temperature', type:'string', default:'72°F', description:'Current temperature'},
{key:'condition', label:'Condition', type:'string', default:'Sunny', description:'Weather condition'},
{key:'humidity', label:'Humidity', type:'string', default:'50%', description:'Humidity'},
{key:'location', label:'Location', type:'string', default:'My City',description:'Location name'},
]},
{ label: 'System / Stats', vars: [
{key:'cpu_usage', label:'CPU %', type:'string', default:'0%', description:'CPU usage'},
{key:'mem_usage', label:'Memory %', type:'string', default:'0%', description:'Memory usage'},
{key:'ip_address', label:'IP Address',type:'string', default:'0.0.0.0', description:'Network IP'},
{key:'uptime', label:'Uptime', type:'string', default:'0d 0h', description:'System uptime'},
]},
{ label: 'Crypto / Finance', vars: [
{key:'ticker', label:'Ticker', type:'string', default:'BTC', description:'Asset symbol'},
{key:'price', label:'Price', type:'string', default:'$0.00', description:'Asset price'},
{key:'change_pct', label:'Change %', type:'string', default:'+0.00%', description:'24h change'},
{key:'volume', label:'Volume', type:'string', default:'0', description:'Trading volume'},
]},
],
elementTypes: [
{ id: 'text', label: 'Text', icon: 'fas fa-font' },
{ id: 'dynamic_text', label: 'Dynamic Text', icon: 'fas fa-code' },
{ id: 'clock', label: 'Clock', icon: 'fas fa-clock' },
{ id: 'rectangle', label: 'Rectangle', icon: 'fas fa-square' },
{ id: 'rounded_rectangle', label: 'Rounded Rect', icon: 'fas fa-stop' },
{ id: 'ellipse', label: 'Ellipse', icon: 'fas fa-circle' },
{ id: 'arc', label: 'Arc', icon: 'fas fa-circle-notch' },
{ id: 'pixel', label: 'Pixel', icon: 'fas fa-dot-circle' },
{ id: 'line', label: 'Line', icon: 'fas fa-minus' },
{ id: 'divider', label: 'Divider', icon: 'fas fa-grip-lines' },
{ id: 'progress_bar', label: 'Progress Bar', icon: 'fas fa-tasks' },
{ id: 'countdown', label: 'Countdown', icon: 'fas fa-hourglass-half' },
{ id: 'marquee', label: 'Marquee', icon: 'fas fa-arrows-alt-h' },
{ id: 'gauge', label: 'Gauge', icon: 'fas fa-tachometer-alt' },
{ id: 'sparkline', label: 'Sparkline', icon: 'fas fa-chart-bar' },
{ id: 'pips', label: 'Pips / Rating', icon: 'fas fa-star-half-alt' },
{ id: 'section', label: 'Section Label', icon: 'fas fa-tag' },
],
COLOR_THEMES: [
{ label: 'Matrix', colors: [{ r:0,g:255,b:70 }, { r:0,g:180,b:50 }, { r:0,g:100,b:30 }] },
{ label: 'Neon', colors: [{ r:255,g:0,b:200 }, { r:0,g:240,b:255 }, { r:255,g:230,b:0 }] },
{ label: 'Warm', colors: [{ r:255,g:160,b:0 }, { r:255,g:80,b:0 }, { r:255,g:220,b:80 }] },
{ label: 'Arctic', colors: [{ r:100,g:200,b:255},{ r:150,g:230,b:255},{ r:200,g:240,b:255}] },
{ label: 'Retro', colors: [{ r:255,g:140,b:0 }, { r:255,g:60,b:60 }, { r:80,g:200,b:120 }] },
{ label: 'Mono', colors: [{ r:255,g:255,b:255},{ r:170,g:170,b:170},{ r:90,g:90,b:90 }] },
],
// ── Lifecycle ─────────────────────────────────────────────────────
init() {
this.$nextTick(() => {
const canvas = document.getElementById('led-canvas');
if (canvas) {
window.ComposerCanvas.init(canvas);
window.ComposerCanvas.updateCanvasSize(this.MATRIX_W, this.MATRIX_H, this.SCALE);
this._loadFonts().then(() => {
this._tryRestoreDraft();
this._loadRecentColors();
this._snapshot();
this.render();
});
}
document.addEventListener('keydown', (e) => this._onKeyDown(e));
});
},
async _loadFonts() {
try {
const ff = new FontFace('PressStart2P', 'url(/composer/api/fonts/PressStart2P-Regular.ttf)');
document.fonts.add(await ff.load());
} catch (e) {
console.warn('PressStart2P load failed:', e);
}
},
_loadRecentColors() {
try {
const raw = localStorage.getItem('ledmatrix_composer_recent_colors');
if (raw) this._recentColors = JSON.parse(raw).slice(0, 8);
} catch (_) {}
},
_trackColor(r, g, b) {
this._recentColors = [
{ r, g, b },
...this._recentColors.filter(c => !(c.r === r && c.g === g && c.b === b)),
].slice(0, 8);
try { localStorage.setItem('ledmatrix_composer_recent_colors', JSON.stringify(this._recentColors)); } catch (_) {}
},
toggleRuler() {
this.showRuler = !this.showRuler;
this.render();
},
_tryRestoreDraft() {
try {
const raw = localStorage.getItem(LS_KEY);
if (!raw) return;
const draft = JSON.parse(raw);
if (!draft?.composer_version) return;
if (!confirm('Resume your last unsaved session?')) {
localStorage.removeItem(LS_KEY);
return;
}
this._applyState(draft);
this._setStatus('Draft restored from last session', 'info');
} catch (_) {}
},
// ── Undo / Redo ───────────────────────────────────────────────────
_snapshot() {
const state = JSON.stringify({
metadata: this.metadata,
elements: this.elements,
dataModel: this.dataModel,
currentPreset: this.currentPreset,
});
this._history.splice(this._historyIndex + 1);
this._history.push(state);
if (this._history.length > 50) this._history.shift();
else this._historyIndex++;
_debouncedAutosave(this._buildPayload());
},
undo() {
if (!this.canUndo) return;
this._historyIndex--;
const state = JSON.parse(this._history[this._historyIndex]);
this._applyState(state);
this._setStatus('Undo', 'info');
this.render();
},
redo() {
if (!this.canRedo) return;
this._historyIndex++;
const state = JSON.parse(this._history[this._historyIndex]);
this._applyState(state);
this._setStatus('Redo', 'info');
this.render();
},
_applyState(state) {
if (state.metadata) this.metadata = state.metadata;
if (state.elements) this.elements = state.elements.map(el => ({
xAnchor: null, yAnchor: null, minWidth: 0, conditions: [],
...el,
id: el.id ?? (this._nextId++),
}));
if (state.dataModel) this.dataModel = state.dataModel;
// _buildPayload writes this as `preset`; older drafts and hand-edited
// files may carry `currentPreset`. Reading only the latter meant every
// saved design restored onto the default 128x32 canvas, with every
// element then drawn at the wrong place.
const savedPreset = state.preset ?? state.currentPreset;
if (savedPreset && savedPreset !== this.currentPreset) {
this.applyPresetLabel(savedPreset, { silent: true });
}
this._nextId = Math.max(...this.elements.map(e => e.id + 1), 1);
this.selectedId = null;
this.isDirty = true;
},
// ── Display preset ────────────────────────────────────────────────
/**
* Restore any saved canvas label, preset or custom.
*
* setCustomSize() stores labels like "200×50" that are deliberately not in
* DISPLAY_PRESETS, so changePreset() alone cannot round-trip them: its
* find() misses and it returns without doing anything, silently.
*/
applyPresetLabel(label, opts = {}) {
if (!label) return;
const known = window.ComposerCanvas.DISPLAY_PRESETS.some(p => p.label === label);
if (known) { this.changePreset(label, opts); return; }
const m = String(label).match(/(\d+)[×xX*,\s]+(\d+)/);
if (!m) return;
const w = Math.max(8, Math.min(512, parseInt(m[1], 10)));
const h = Math.max(8, Math.min(256, parseInt(m[2], 10)));
this.MATRIX_W = w;
this.MATRIX_H = h;
this.currentPreset = `${w}×${h}`;
this.SCALE = w <= 64 ? 6 : w <= 128 ? 4 : 2;
this._applyScale();
if (!opts.silent) this.render();
},
changePreset(presetLabel, opts = {}) {
const preset = window.ComposerCanvas.DISPLAY_PRESETS.find(p => p.label === presetLabel);
if (!preset) return;
this.currentPreset = presetLabel;
this.MATRIX_W = preset.w;
this.MATRIX_H = preset.h;
this.SCALE = preset.w <= 64 ? 6 : preset.w <= 128 ? 4 : 2;
const canvas = document.getElementById('led-canvas');
if (canvas) {
window.ComposerCanvas.updateCanvasSize(this.MATRIX_W, this.MATRIX_H, this.SCALE);
canvas.style.width = (this.MATRIX_W * this.SCALE) + 'px';
canvas.style.height = (this.MATRIX_H * this.SCALE) + 'px';
}
if (!opts.silent) this.render();
},
// ── Rendering ─────────────────────────────────────────────────────
render(opts = {}) {
window.ComposerCanvas.render(
this.elements, this.selectedId, this.MATRIX_W, this.MATRIX_H, this.SCALE,
{ bgColor: this.metadata.bgColor, showGuides: this.showGuides, showRuler: this.showRuler, blinkOff: this.blinkAnimating && this._blinkPhase, animTick: this.blinkAnimating ? this._animTick : null, previewValues: this._previewValues, ...opts },
);
},
toggleGrid() {
this.showGridOverlay = !this.showGridOverlay;
window.ComposerCanvas.setGrid(this.showGridOverlay);
this.render();
},
toggleGuides() {
this.showGuides = !this.showGuides;
this.render();
},
toggleBlinkPreview() {
this.blinkAnimating = !this.blinkAnimating;
if (this.blinkAnimating) {
this._blinkPhase = false;
this._animTick = 0;
let blinkTick = 0;
this._blinkTimer = setInterval(() => {
this._animTick++;
blinkTick++;
if (blinkTick >= 3) { this._blinkPhase = !this._blinkPhase; blinkTick = 0; }
this.render();
}, 200);
} else {
clearInterval(this._blinkTimer);
this._blinkTimer = null;
this._blinkPhase = false;
this._animTick = 0;
this.render();
}
},
downloadPng() {
const canvas = document.getElementById('led-canvas');
if (!canvas) return;
const link = document.createElement('a');
link.download = (this.metadata.id || 'composer-preview') + '.png';
link.href = canvas.toDataURL('image/png');
link.click();
},
exportDesign() {
const payload = this._buildPayload();
const json = JSON.stringify(payload, null, 2);
const blob = new Blob([json], { type: 'application/json' });
const url = URL.createObjectURL(blob);
const link = document.createElement('a');
link.download = (this.metadata.id || 'composer-design') + '.composer.json';
link.href = url;
link.click();
URL.revokeObjectURL(url);
},
importDesign() {
const input = document.createElement('input');
input.type = 'file';
input.accept = '.json,.composer.json';
input.onchange = (e) => {
const file = e.target.files[0];
if (!file) return;
const reader = new FileReader();
reader.onload = (ev) => {
try {
const data = JSON.parse(ev.target.result);
if (!data.composer_version) throw new Error('Not a composer file');
if (this.isDirty && !confirm('Replace current design?')) return;
// Carry the canvas size through too -- an imported 256x64 design
// laid out on a 128x32 canvas puts every element in the wrong place.
this._applyState({
metadata: data.metadata, elements: data.elements,
dataModel: data.dataModel,
preset: data.preset ?? data.currentPreset,
});
this.isDirty = false;
this._setStatus('Design loaded', 'success');
this.render();
} catch (err) {
this._setStatus('Failed to load: ' + err.message, 'error');
}
};
reader.readAsText(file);
};
input.click();
},
// ── Zoom controls ─────────────────────────────────────────────────
zoomIn() {
if (this.SCALE >= 8) return;
this.SCALE++;
this._applyScale();
},
zoomOut() {
if (this.SCALE <= 1) return;
this.SCALE--;
this._applyScale();
},
_applyScale() {
const canvas = document.getElementById('led-canvas');
if (!canvas) return;
window.ComposerCanvas.updateCanvasSize(this.MATRIX_W, this.MATRIX_H, this.SCALE);
canvas.style.width = (this.MATRIX_W * this.SCALE) + 'px';
canvas.style.height = (this.MATRIX_H * this.SCALE) + 'px';
this.render();
},
setCustomSize() {
const input = prompt(
'Enter canvas size as WxH (e.g. 96×48, 192×64):',
`${this.MATRIX_W}×${this.MATRIX_H}`
);
if (!input) return;
const m = input.match(/(\d+)[×xX*,\s]+(\d+)/);
if (!m) { this._setStatus('Invalid size — use WxH format', 'error'); return; }
const w = Math.max(8, Math.min(512, parseInt(m[1])));
const h = Math.max(8, Math.min(256, parseInt(m[2])));
this.MATRIX_W = w;
this.MATRIX_H = h;
this.currentPreset = `${w}×${h}`;
this.SCALE = w <= 64 ? 6 : w <= 128 ? 4 : 2;
this._applyScale();
this._setStatus(`Canvas set to ${w}×${h}`, 'info');
},
zoomFit() {
// Fit canvas to center column: subtract left (~224px) + right (~288px) panels + margins
const avW = Math.max(80, window.innerWidth - 560);
// Subtract header (44) + toolbar (~40) + layers (~180) + status (28) + padding
const avH = Math.max(40, window.innerHeight - 340);
const fitW = Math.floor(avW / this.MATRIX_W);
const fitH = Math.floor(avH / this.MATRIX_H);
this.SCALE = Math.max(1, Math.min(8, Math.min(fitW, fitH)));
this._applyScale();
},
onBgColorChange(hex) {
this.metadata.bgColor = {
r: parseInt(hex.slice(1, 3), 16),
g: parseInt(hex.slice(3, 5), 16),
b: parseInt(hex.slice(5, 7), 16),
};
this.render();
},
// ── Canvas events ─────────────────────────────────────────────────
onCanvasMouseDown(event) {
const { lx, ly } = this._canvasToLed(event);
// Priority 1: resize handle on selected rectangle (skip if locked)
// Gate on the same list the canvas draws handles from, or the editor
// advertises handles it will not honour.
if (window.ComposerCanvas.RESIZABLE_TYPES.includes(this.selectedElement?.type)
&& !this.selectedElement.locked) {
const handle = window.ComposerCanvas.getResizeHandle(
this.selectedElement, lx, ly, this.MATRIX_W, this.MATRIX_H
);
if (handle) {
const el = this.selectedElement;
this._resize = {
active: true, elemId: el.id, handle,
startMX: event.clientX, startMY: event.clientY,
startW: el.width, startH: el.height,
startX: el.x, startY: el.y,
};
return;
}
}
// Priority 2: element hit test (reverse = top layer first)
const hit = [...this.elements].reverse().find(
el => window.ComposerCanvas.hitTest(el, lx, ly, this.MATRIX_W, this.MATRIX_H)
);
if (hit) {
this.selectedId = hit.id;
if (!hit.locked) {
const stored = this._getStoredPos(hit);
this._drag = {
active: true, elemId: hit.id,
startMX: event.clientX, startMY: event.clientY,
startEX: stored.x, startEY: stored.y,
};
}
} else {
this.selectedId = null;
}
this.render();
},
onCanvasMouseMove(event) {
const { lx, ly } = this._canvasToLed(event);
this.hoverInfo = `${lx}, ${ly}`;
// Resize
if (this._resize.active) {
const dx = Math.round((event.clientX - this._resize.startMX) / this.SCALE);
const dy = Math.round((event.clientY - this._resize.startMY) / this.SCALE);
const el = this.elements.find(e => e.id === this._resize.elemId);
if (!el) return;
const h = this._resize.handle;
if (h.includes('e')) el.width = Math.max(1, this._resize.startW + dx);
if (h.includes('s')) el.height = Math.max(1, this._resize.startH + dy);
if (h.includes('w')) {
const nw = Math.max(1, this._resize.startW - dx);
el.x = this._resize.startX + (this._resize.startW - nw);
el.width = nw;
}
if (h.includes('n')) {
const nh = Math.max(1, this._resize.startH - dy);
el.y = this._resize.startY + (this._resize.startH - nh);
el.height = nh;
}
this.isDirty = true;
this.render({ showTooltip: true });
// Cursor
const canvas = document.getElementById('led-canvas');
if (canvas) canvas.style.cursor = window.ComposerCanvas.getCursorForHandle(h);
return;
}
// Move drag
if (this._drag.active) {
const dx = Math.round((event.clientX - this._drag.startMX) / this.SCALE);
const dy = Math.round((event.clientY - this._drag.startMY) / this.SCALE);
const el = this.elements.find(e => e.id === this._drag.elemId);
if (!el) return;
if (el.type === 'line') {
const newX = Math.max(0, Math.min(this.MATRIX_W - 1, this._drag.startEX + dx));
const newY = Math.max(0, Math.min(this.MATRIX_H - 1, this._drag.startEY + dy));
const offX = newX - el.x0, offY = newY - el.y0;
el.x0 = newX; el.y0 = newY;
el.x1 = Math.max(0, Math.min(this.MATRIX_W - 1, el.x1 + offX));
el.y1 = Math.max(0, Math.min(this.MATRIX_H - 1, el.y1 + offY));
this._drag.startEX = el.x0; this._drag.startEY = el.y0;
this._drag.startMX = event.clientX; this._drag.startMY = event.clientY;
} else {
// Store anchor-relative offset
const newStored = {
x: this._drag.startEX + dx,
y: this._drag.startEY + dy,
};
this._setStoredPos(el, newStored);
}
this.isDirty = true;
this.render({ showTooltip: true });
return;
}
// Cursor hints when hovering
const canvas = document.getElementById('led-canvas');
if (canvas) {
let cursor = 'crosshair';
if (window.ComposerCanvas.RESIZABLE_TYPES.includes(this.selectedElement?.type)) {
const handle = window.ComposerCanvas.getResizeHandle(
this.selectedElement, lx, ly, this.MATRIX_W, this.MATRIX_H
);
if (handle) cursor = window.ComposerCanvas.getCursorForHandle(handle);
}
if (cursor === 'crosshair') {
const hit = [...this.elements].reverse().find(
el => window.ComposerCanvas.hitTest(el, lx, ly, this.MATRIX_W, this.MATRIX_H)
);
if (hit) cursor = 'move';
}
canvas.style.cursor = cursor;
}
},
onCanvasMouseUp() {
if (this._resize.active || this._drag.active) {
this._resize = { active: false };
this._drag = { active: false };
this._snapshot();
}
const canvas = document.getElementById('led-canvas');
if (canvas) canvas.style.cursor = 'crosshair';
},
onCanvasMouseLeave() {
this.hoverInfo = '';
this.onCanvasMouseUp();
},
_canvasToLed(event) {
const rect = event.target.getBoundingClientRect();
const lx = Math.max(0, Math.min(this.MATRIX_W - 1, Math.floor((event.clientX - rect.left) / this.SCALE)));
const ly = Math.max(0, Math.min(this.MATRIX_H - 1, Math.floor((event.clientY - rect.top) / this.SCALE)));
return { lx: this._snap(lx), ly: this._snap(ly) };
},
_snap(v) {
if (!this.snapToGrid || this.snapSize < 2) return v;
return Math.round(v / this.snapSize) * this.snapSize;
},
// Anchor-aware position storage: x/y stored as offset from anchor
_getStoredPos(el) {
// addElement() assigns `x`/`y` before spreading ELEMENT_DEFAULTS, and the
// line defaults define only x0/y0 -- so a line carries both, with `x` set
// to canvas/4 and x0 to 0. Drag and nudge move x0/y0 only, so preferring
// `x` here handed the drag a base it never updates and the line jumped by
// the difference on the next grab.
if (el.type === 'line') {
return { x: el.x0 ?? 0, y: el.y0 ?? 0 };
}
return { x: el.x ?? el.x0 ?? 0, y: el.y ?? el.y0 ?? 0 };
},
_setStoredPos(el, { x, y }) {
if (this.snapToGrid && this.snapSize > 0) {
x = Math.round(x / this.snapSize) * this.snapSize;
y = Math.round(y / this.snapSize) * this.snapSize;
}
const clampX = v => Math.max(-this.MATRIX_W, Math.min(this.MATRIX_W * 2, v));
const clampY = v => Math.max(-this.MATRIX_H, Math.min(this.MATRIX_H * 2, v));
if (el.type === 'line') {
el.x0 = clampX(x); el.y0 = clampY(y);
} else {
el.x = clampX(x); el.y = clampY(y);
}
},
// ── Alignment ─────────────────────────────────────────────────────
_alignElement(el, axis, mode) {
const bb = window.ComposerCanvas.getBoundingBox(el, this.MATRIX_W, this.MATRIX_H);
if (!bb) return;
if (axis === 'x') {
const newX = mode === 'start' ? 0
: mode === 'center' ? Math.round((this.MATRIX_W - bb.w) / 2)
: this.MATRIX_W - bb.w;
// Clear x-anchor so stored x IS the absolute position
if ('xAnchor' in el) el.xAnchor = null;
el.x = Math.round(newX);
if (el.type === 'line') el.x0 = Math.round(newX);
} else {
const newY = mode === 'start' ? 0
: mode === 'center' ? Math.round((this.MATRIX_H - bb.h) / 2)
: this.MATRIX_H - bb.h;
if ('yAnchor' in el) el.yAnchor = null;
el.y = Math.round(newY);
if (el.type === 'line') el.y0 = Math.round(newY);
}
this._snapshot();
this.isDirty = true;
this.render();
},
alignLeft() { if (this.selectedElement) this._alignElement(this.selectedElement, 'x', 'start'); },
alignHCenter() { if (this.selectedElement) this._alignElement(this.selectedElement, 'x', 'center'); },
alignRight() { if (this.selectedElement) this._alignElement(this.selectedElement, 'x', 'end'); },
alignTop() { if (this.selectedElement) this._alignElement(this.selectedElement, 'y', 'start'); },
alignVCenter() { if (this.selectedElement) this._alignElement(this.selectedElement, 'y', 'center'); },
alignBottom() { if (this.selectedElement) this._alignElement(this.selectedElement, 'y', 'end'); },
// ── Keyboard shortcuts ────────────────────────────────────────────
_onKeyDown(e) {
const tag = document.activeElement?.tagName;
const inInput = tag === 'INPUT' || tag === 'TEXTAREA' || tag === 'SELECT'
|| document.activeElement?.isContentEditable === true;
// While a field has focus the browser's own editing keys win. This
// guard used to sit below, so Ctrl+C copied the selected *element*
// instead of the selected text (preventDefault stopped the real copy),
// Ctrl+V pasted an element, Ctrl+A could not select the field's
// contents, and Tab always moved the element selection rather than
// focus -- leaving no way to reach the next input from the keyboard.
if (inInput) return;
if (e.ctrlKey || e.metaKey) {
if (e.key === 'z' && !e.shiftKey) { e.preventDefault(); this.undo(); return; }
if ((e.key === 'y') || (e.key === 'z' && e.shiftKey)) { e.preventDefault(); this.redo(); return; }
if (e.key === 'd' && this.selectedId) { e.preventDefault(); this.duplicateElement(this.selectedId); return; }
if (e.key === 'c' && this.selectedId && !e.shiftKey) { e.preventDefault(); this.copyElement(); return; }
if (e.key === 'c' && this.selectedId && e.shiftKey) { e.preventDefault(); this.copyStyle(); return; }
if (e.key === 'v' && this._clipboard && !e.shiftKey) { e.preventDefault(); this.pasteElement(); return; }
if (e.key === 'v' && this._styleClipboard && e.shiftKey) { e.preventDefault(); this.pasteStyle(); return; }
if (e.key === 'a') { e.preventDefault(); if (this.elements.length) { this.selectedId = this.elements[0].id; this.render(); } return; }
}
// Tab cycles through elements (canvas focus only -- see the guard above)
if (e.key === 'Tab' && this.elements.length) {
e.preventDefault();
const idx = this.elements.findIndex(el => el.id === this.selectedId);
const next = e.shiftKey
? (idx <= 0 ? this.elements.length - 1 : idx - 1)
: (idx >= this.elements.length - 1 ? 0 : idx + 1);
this.selectedId = this.elements[next].id;
this.render();
return;
}
const dist = e.shiftKey ? 5 : (this.snapToGrid && this.snapSize >= 2 ? this.snapSize : 1);
if (e.key === 'ArrowLeft') { e.preventDefault(); this.nudge(-dist, 0); }
if (e.key === 'ArrowRight') { e.preventDefault(); this.nudge(dist, 0); }
if (e.key === 'ArrowUp') { e.preventDefault(); this.nudge(0, -dist); }
if (e.key === 'ArrowDown') { e.preventDefault(); this.nudge(0, dist); }
if ((e.key === 'Delete' || e.key === 'Backspace') && this.selectedId) {
e.preventDefault();
this.removeElement(this.selectedId);
}
if (e.key === 'Escape') {
if (this.showHelpModal) { this.showHelpModal = false; return; }
this.selectedId = null; this.render();
}
if (e.key === '?') { this.showHelpModal = !this.showHelpModal; }
if (e.key === 'g' || e.key === 'G') { this.snapToGrid = !this.snapToGrid; }
if (e.key === ']' && this.selectedId) { this.bringToFront(this.selectedId); }
if (e.key === '[' && this.selectedId) { this.sendToBack(this.selectedId); }
},
nudge(dx, dy) {
const el = this.selectedElement;
if (!el) return;
if (el.locked) { this._setStatus('Unlock element to move it', 'info'); return; }
if (el.type === 'line') {
el.x0 = Math.max(0, Math.min(this.MATRIX_W - 1, el.x0 + dx));
el.y0 = Math.max(0, Math.min(this.MATRIX_H - 1, el.y0 + dy));
el.x1 = Math.max(0, Math.min(this.MATRIX_W - 1, el.x1 + dx));
el.y1 = Math.max(0, Math.min(this.MATRIX_H - 1, el.y1 + dy));
} else if (el.type === 'divider') {
if (el.orientation === 'horizontal') el.y = Math.max(0, Math.min(this.MATRIX_H - 1, (el.y ?? 0) + dy));
else el.x = Math.max(0, Math.min(this.MATRIX_W - 1, (el.x ?? 0) + dx));
} else {
el.x = (el.x ?? 0) + dx;
el.y = (el.y ?? 0) + dy;
}
this.isDirty = true;
this._snapshot();
this.render();
},
// ── Element management ────────────────────────────────────────────
addElement(type) {
const defaults = window.ComposerCanvas.ELEMENT_DEFAULTS[type];
if (!defaults) return;
const el = {
id: this._nextId++,
type,
label: '',
conditions: [],
xAnchor: null, yAnchor: null, minWidth: 0,
x: Math.floor(this.MATRIX_W / 4),
y: Math.floor(this.MATRIX_H / 2) - 4,
...structuredClone(defaults),
};
if (type === 'line') {
const cx = Math.floor(this.MATRIX_W / 4), cy = Math.floor(this.MATRIX_H / 2);
el.x0 = cx; el.y0 = cy;
el.x1 = Math.min(this.MATRIX_W - 1, cx + 30); el.y1 = cy;
el.x = cx; el.y = cy;
}
this.elements.push(el);
this.selectedId = el.id;
this.isDirty = true;
this._snapshot();
this.render();
},
duplicateElement(id) {
const el = this.elements.find(e => e.id === id);
if (!el) return;
const copy = {
...structuredClone(el),
id: this._nextId++,
label: el.label ? el.label + ' copy' : '',
};
// Offset slightly so it's visually distinct
if (copy.type === 'line') { copy.x0 += 4; copy.y0 += 4; copy.x1 += 4; copy.y1 += 4; }
else { copy.x = (copy.x ?? 0) + 4; copy.y = (copy.y ?? 0) + 4; }
const idx = this.elements.findIndex(e => e.id === id);
this.elements.splice(idx + 1, 0, copy);
this.selectedId = copy.id;
this.isDirty = true;
this._snapshot();
this.render();
},
copyElement() {
if (!this.selectedElement) return;
this._clipboard = structuredClone(this.selectedElement);
this._setStatus(`Copied: ${this.selectedElement.label || this.selectedElement.type}`, 'info');
},
copyStyle() {
const el = this.selectedElement;
if (!el) return;
this._styleClipboard = { r: el.r, g: el.g, b: el.b, font: el.font };
this._setStatus('Style copied — select another element and paste style', 'info');
},
pasteStyle() {
const el = this.selectedElement;
if (!el || !this._styleClipboard) return;
const { r, g, b, font } = this._styleClipboard;
if (r !== undefined) { el.r = r; el.g = g; el.b = b; }
if (font !== undefined && el.font !== undefined) el.font = font;
this.isDirty = true;
this._snapshot();
this.render();
this._setStatus('Style pasted', 'success');
},
pasteElement() {
if (!this._clipboard) return;
const copy = structuredClone(this._clipboard);
copy.id = this._nextId++;
if (copy.type === 'line') { copy.x0 += 6; copy.y0 += 6; copy.x1 += 6; copy.y1 += 6; }
else { copy.x = (copy.x ?? 0) + 6; copy.y = (copy.y ?? 0) + 6; }
this.elements.push(copy);
this.selectedId = copy.id;
this.isDirty = true;
this._snapshot();
this.render();
this._setStatus('Pasted element', 'success');
},
removeElement(id) {
this.elements = this.elements.filter(e => e.id !== id);
if (this.selectedId === id) this.selectedId = null;
this.isDirty = true;
this._snapshot();
this.render();
},
moveElementUp(id) {
const idx = this.elements.findIndex(e => e.id === id);
if (idx < this.elements.length - 1) {
[this.elements[idx], this.elements[idx + 1]] = [this.elements[idx + 1], this.elements[idx]];
this.isDirty = true;
this._snapshot();
this.render();
}
},
moveElementDown(id) {
const idx = this.elements.findIndex(e => e.id === id);
if (idx > 0) {
[this.elements[idx], this.elements[idx - 1]] = [this.elements[idx - 1], this.elements[idx]];
this.isDirty = true;
this._snapshot();
this.render();
}
},
bringToFront(id) {
const idx = this.elements.findIndex(e => e.id === id);
if (idx < this.elements.length - 1) {
this.elements.push(this.elements.splice(idx, 1)[0]);
this.isDirty = true;
this._snapshot();
this.render();
}
},
sendToBack(id) {
const idx = this.elements.findIndex(e => e.id === id);
if (idx > 0) {
this.elements.unshift(this.elements.splice(idx, 1)[0]);
this.isDirty = true;
this._snapshot();
this.render();
}
},
clearAll() {
if (this.elements.length === 0) return;
if (!confirm('Remove all elements from the canvas?')) return;
this.elements = [];
this.selectedId = null;
this.isDirty = true;
this._snapshot();
this.render();
},
// ── Alignment ─────────────────────────────────────────────────────
alignElement(dir) {
const el = this.selectedElement;
if (!el) return;
const bb = window.ComposerCanvas.getBoundingBox(el, this.MATRIX_W, this.MATRIX_H);
switch (dir) {
case 'left': el.x = 0; break;
case 'center': el.x = Math.round((this.MATRIX_W - bb.w) / 2); break;
case 'right': el.x = this.MATRIX_W - bb.w; break;
case 'top': el.y = 0; break;
case 'middle': el.y = Math.round((this.MATRIX_H - bb.h) / 2); break;
case 'bottom': el.y = this.MATRIX_H - bb.h; break;
}
this.isDirty = true;
this._snapshot();
this.render();
},
// ── Templates ─────────────────────────────────────────────────────
loadTemplate(tmpl) {
if (this.isDirty && this.elements.length > 0) {
if (!confirm('Load template? Your current canvas will be replaced.')) return;
}
this.elements = tmpl.elements.map((el, i) => ({
xAnchor: null, yAnchor: null, minWidth: 0, conditions: [],
...structuredClone(el),
id: i + 1,
}));
this._nextId = this.elements.length + 1;
this.dataModel = structuredClone(tmpl.dataModel);
if (tmpl.preset) this.changePreset(tmpl.preset, { silent: true });
this.selectedId = null;
this.showTemplateModal = false;
this.isDirty = true;
this._snapshot();
this.render();
this._setStatus(`Loaded template: ${tmpl.label}`, 'success');
},
// ── Metadata helpers ──────────────────────────────────────────────
onNameInput() {
if (this._idAutoGenerated) {
this.metadata.id = this.metadata.name
.toLowerCase()
.replace(/[^a-z0-9]+/g, '-')
.replace(/^-+|-+$/g, '');
}
},
onIdInput() { this._idAutoGenerated = false; },
isIdValid() { return /^[a-z][a-z0-9-]{0,62}$/.test(this.metadata.id); },
// ── Config variables ──────────────────────────────────────────────
addConfigVar() {
const key = this.newConfigVar.key.trim();
if (!key) { this._setStatus('Key is required', 'error'); return; }
if (!/^[a-zA-Z_][a-zA-Z0-9_]*$/.test(key)) {
this._setStatus('Key must be a valid Python identifier', 'error'); return;
}
if (this.dataModel.configVars.find(v => v.key === key)) {
this._setStatus(`"${key}" already exists`, 'error'); return;
}
this.dataModel.configVars.push({ ...this.newConfigVar, key });
this.newConfigVar = { key:'', label:'', type:'string', default:'', description:'' };
this.showConfigVarModal = false;
this.isDirty = true;
this._snapshot();
},
removeConfigVar(key) {
const bound = this.elements.filter(
e => e.type === 'dynamic_text' && e.binding?.source === 'config' && e.binding?.key === key
);
if (bound.length && !confirm(`"${key}" is used by ${bound.length} element(s). Remove anyway?`)) return;
this.dataModel.configVars = this.dataModel.configVars.filter(v => v.key !== key);
this.isDirty = true;
this._snapshot();
},
_isBound(key) {
return this.elements.some(
e => e.type === 'dynamic_text' && e.binding?.source === 'config' && e.binding?.key === key
);
},
addPreMadeVar(varDef) {
if (this.dataModel.configVars.find(v => v.key === varDef.key)) {
this._setStatus(`"${varDef.key}" already added`, 'warning'); return;
}
this.dataModel.configVars.push({ ...varDef });
this.isDirty = true;
this._snapshot();
this._setStatus(`Added: ${varDef.key}`, 'success');
},
// ── Open existing plugin ──────────────────────────────────────────
async openPluginModal() {
this.showOpenModal = true;
this.installedPlugins = [];
this.loadPluginsStatus = 'loading';
try {
const resp = await fetch('/composer/api/plugins');
if (!resp.ok) throw new Error(`HTTP ${resp.status}`);
this.installedPlugins = await resp.json();
this.loadPluginsStatus = 'done';
} catch (e) {
this.loadPluginsStatus = 'error';
this._setStatus('Could not load plugin list: ' + e.message, 'error');
}
},
async loadPlugin(pluginId) {
this.showOpenModal = false;
try {
// encodeURIComponent: this id comes back from /composer/api/plugins,
// and any character outside the expected set would otherwise change
// which path is requested rather than being part of the id.
const resp = await fetch(`/composer/api/load/${encodeURIComponent(pluginId)}`);
if (!resp.ok) {
const err = await resp.json().catch(() => ({}));
throw new Error(err.message || `HTTP ${resp.status}`);
}
const data = await resp.json();
const state = data.state ?? data;
this._applyState(state);
this._idAutoGenerated = false;
this.isDirty = false;
this._snapshot();
this._setStatus(`Loaded: ${pluginId}` + (data.source === 'schema_import' ? ' (config vars only)' : ''), 'success');
this.render();
} catch (e) {
this._setStatus('Failed to load plugin: ' + e.message, 'error');
}
},
// ── Code preview ──────────────────────────────────────────────────
async showPreview() {
if (!this._validateBeforeExport()) return;
this.showCodeModal = true;
this.loadingCode = true;
this.codeFiles = {};
try {
const resp = await fetch('/composer/api/preview', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify(this._buildPayload()),
});
const data = await resp.json();
if (!resp.ok) throw new Error(data.message || `HTTP ${resp.status}`);
this.codeFiles = data.files;
this.codeTab = 'manager.py';
} catch (e) {
this._setStatus('Preview failed: ' + e.message, 'error');
this.showCodeModal = false;
} finally {
this.loadingCode = false;
}
},
// ── Color helpers ─────────────────────────────────────────────────
rgbToHex(r, g, b) {
return '#' + [r, g, b].map(v => Math.max(0, Math.min(255, v)).toString(16).padStart(2, '0')).join('');
},
onColorChange(el, hexField, hex) {
const r = parseInt(hex.slice(1, 3), 16);
const g = parseInt(hex.slice(3, 5), 16);
const b = parseInt(hex.slice(5, 7), 16);
if (hexField === 'fill') { el.fillR = r; el.fillG = g; el.fillB = b; }
else if (hexField === 'out') { el.outR = r; el.outG = g; el.outB = b; }
else if (hexField === 'bg') { el.bgR = r; el.bgG = g; el.bgB = b; }
else if (hexField === 'track') { el.trackR = r; el.trackG = g; el.trackB = b; }
else if (hexField === 'empty') { el.emptyR = r; el.emptyG = g; el.emptyB = b; }
else { el.r = r; el.g = g; el.b = b; }
this._trackColor(r, g, b);
// Matches applyPaletteColor below. Without these, a colour set through
// the picker never marked the design dirty and never took a snapshot --
// _debouncedAutosave only runs from _snapshot -- so the change was lost
// on reload and could not be undone.
this.isDirty = true;
this._snapshot();
this.render();
},
applyPaletteColor(el, hexField, swatch) {
const { r, g, b } = swatch;
if (hexField === 'fill') { el.fillR = r; el.fillG = g; el.fillB = b; }
else if (hexField === 'out') { el.outR = r; el.outG = g; el.outB = b; }
else if (hexField === 'bg') { el.bgR = r; el.bgG = g; el.bgB = b; }
else if (hexField === 'track') { el.trackR = r; el.trackG = g; el.trackB = b; }
else if (hexField === 'empty') { el.emptyR = r; el.emptyG = g; el.emptyB = b; }
else { el.r = r; el.g = g; el.b = b; }
this._trackColor(r, g, b);
this.isDirty = true;
this._snapshot();
this.render();
},
// ── Export & Install ──────────────────────────────────────────────
_buildPayload() {
return {
composer_version: '1.0',
metadata: this.metadata,
elements: this.elements,
dataModel: this.dataModel,
preset: this.currentPreset,
};
},
_validateBeforeExport() {
if (!this.metadata.name.trim()) { this._setStatus('Plugin name is required', 'error'); return false; }
if (!this.isIdValid()) { this._setStatus('Plugin ID is invalid', 'error'); return false; }
if (!this.metadata.author.trim()) { this._setStatus('Author is required', 'error'); return false; }
if (this.elements.length === 0) { this._setStatus('Add at least one element', 'error'); return false; }
const unbound = this.elements.filter(
e => (e.type === 'dynamic_text' || e.type === 'progress_bar') && !e.binding?.key
);
if (unbound.length) { this._setStatus(`${unbound.length} element(s) have no variable bound`, 'error'); return false; }
return true;
},
async generateZip() {
if (!this._validateBeforeExport()) return;
this.generateStatus = 'working';
try {
const resp = await fetch('/composer/api/generate', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify(this._buildPayload()),
});
if (!resp.ok) {
const err = await resp.json().catch(() => ({ message: 'Server error' }));
throw new Error(err.message || `HTTP ${resp.status}`);
}
const blob = await resp.blob();
const url = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url; a.download = `${this.metadata.id}.zip`; a.click();
URL.revokeObjectURL(url);
this.generateStatus = 'done';
this._setStatus('Plugin ZIP downloaded', 'success');
setTimeout(() => { if (this.generateStatus === 'done') this.generateStatus = 'idle'; }, 4000);
} catch (err) {
this.generateStatus = 'error';
this._setStatus(err.message, 'error');
setTimeout(() => { if (this.generateStatus === 'error') this.generateStatus = 'idle'; }, 6000);
}
},
async installLocally(force = false) {
if (!this._validateBeforeExport()) return;
this.installStatus = 'working';
try {
const resp = await fetch('/composer/api/install', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ ...this._buildPayload(), _force: force }),
});
const data = await resp.json().catch(() => ({ message: 'Server error' }));
if (resp.status === 409 && !force) {
this.installStatus = 'idle';
if (confirm(`Plugin "${this.metadata.id}" is already installed.\n\nOverwrite it with the current design?`)) {
return this.installLocally(true);
}
return;
}
if (!resp.ok) throw new Error(data.message || `HTTP ${resp.status}`);
this.installStatus = 'done';
this.isDirty = false;
localStorage.removeItem(LS_KEY);
this._setStatus(`"${this.metadata.id}" installed — enable it in the Plugin Manager`, 'success');
setTimeout(() => { if (this.installStatus === 'done') this.installStatus = 'idle'; }, 6000);
} catch (err) {
this.installStatus = 'error';
this._setStatus(err.message, 'error');
setTimeout(() => { if (this.installStatus === 'error') this.installStatus = 'idle'; }, 6000);
}
},
// ── Color themes ──────────────────────────────────────────────────
applyColorTheme(theme) {
// Distribute theme colors round-robin across text-type elements
const textTypes = ['text', 'dynamic_text', 'clock', 'countdown', 'marquee', 'gauge'];
let idx = 0;
for (const el of this.elements) {
if (textTypes.includes(el.type)) {
const c = theme.colors[idx % theme.colors.length];
el.r = c.r; el.g = c.g; el.b = c.b;
idx++;
}
}
this.isDirty = true;
this._snapshot();
this.render();
this._setStatus(`Applied theme: ${theme.label}`, 'success');
},
// ── Status ────────────────────────────────────────────────────────
_setStatus(msg, type = 'info') {
this.statusMsg = msg;
this.statusType = type;
},
statusClass() {
return {
info: 'text-gray-500',
success: 'text-green-600',
error: 'text-red-600',
warning: 'text-yellow-600',
}[this.statusType] || 'text-gray-500';
},
};
}