dcs.spa/docs/base.js at main · markc/dcs.spa · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
/* Base JS - Mobile-First App Shell
 * Copyright © 2026 Mark Constable <mc@dcs.spa> (MIT License)
 */
if (typeof Base === 'undefined') {
const Base = {
    // All state in single localStorage key
    key: 'base-state',

    // Get/set persistent state. Tolerant of corrupt JSON and unavailable storage
    // (private mode / sandboxed iframe) so one bad value can't break init/restore.
    state(updates) {
        let s = {};
        try { s = JSON.parse(localStorage.getItem(this.key) || '{}') || {}; } catch (e) { s = {}; }
        if (!updates) return s;
        Object.assign(s, updates);
        try { localStorage.setItem(this.key, JSON.stringify(s)); } catch (e) { /* storage unavailable */ }
        return s;
    },

    // Theme: toggle dark/light
    toggleTheme() {
        const html = document.documentElement;
        const isDark = html.classList.contains('dark');
        html.classList.replace(isDark ? 'dark' : 'light', isDark ? 'light' : 'dark');
        this.state({ theme: isDark ? 'light' : 'dark' });
        this.updateIcon();
    },

    // Update theme icon (sun/moon)
    updateIcon() {
        const btn = document.getElementById('theme-icon');
        if (!btn) return;
        const isDark = document.documentElement.classList.contains('dark');
        btn.setAttribute('aria-label', isDark ? 'Light mode' : 'Dark mode');
        const icon = btn.querySelector('[data-lucide], svg');
        if (icon && typeof lucide !== 'undefined') {
            const i = document.createElement('i');
            i.setAttribute('data-lucide', isDark ? 'sun' : 'moon');
            icon.replaceWith(i);
            lucide.createIcons({ nodes: [i] });
        } else if (!icon) {
            btn.textContent = isDark ? '☀️' : '🌙';
        }
    },

    // Color scheme
    setScheme(scheme) {
        const html = document.documentElement;
        ['crimson', 'stone', 'ocean', 'forest', 'sunset', 'mono'].forEach(s => html.classList.remove('scheme-' + s));
        if (scheme && scheme !== 'default') html.classList.add('scheme-' + scheme);
        this.state({ scheme: scheme || 'default' });
        document.querySelectorAll('[data-scheme]').forEach(el =>
            el.classList.toggle('active', el.dataset.scheme === (scheme || 'default'))
        );
    },

    // Content width: 'narrow' (~75% of normal — a tighter reading measure),
    // 'normal' (the --container-lg default, no class), or 'wide' (drops the cap to
    // fill the real estate). A deliberate user choice — surfaces may adopt wide-only
    // layouts. Persisted; the pre-paint <head> script applies the class before first
    // paint (no flash).
    setWidth(mode) {
        const m = (mode === 'narrow' || mode === 'wide') ? mode : 'normal';
        const html = document.documentElement;
        html.classList.toggle('narrow', m === 'narrow');
        html.classList.toggle('wide', m === 'wide');
        this.state({ width: m });
        document.querySelectorAll('[data-width]').forEach(el =>
            el.classList.toggle('active', el.dataset.width === m)
        );
    },

    // Toast notification
    toast(msg, type = 'success', ms = 3000) {
        document.querySelector('.toast')?.remove();
        const t = document.createElement('div');
        t.className = `toast toast-${type}`;
        t.textContent = msg;
        t.setAttribute('role', 'alert');
        document.body.appendChild(t);
        setTimeout(() => { t.style.opacity = '0'; setTimeout(() => t.remove(), 300); }, ms);
    },

    // Sidebar: toggle open/close (each side is autonomous)
    toggleSidebar(side) {
        const sb = document.querySelector(`.sidebar-${side}`);
        if (!sb) return;
        const opening = !sb.classList.contains('open');
        if (opening) {
            sb.classList.add('open');
            this.state({ [side + 'Open']: true });
        } else {
            // Close unpins (otherwise restore would re-open on next load)
            sb.classList.remove('open', 'pinned');
            document.body.classList.remove(side + '-pinned');
            this.state({ [side + 'Open']: false, [side + 'Pinned']: false });
        }
    },

    // Set theme explicitly (light/dark)
    setTheme(theme) {
        const html = document.documentElement;
        html.classList.remove('light', 'dark');
        html.classList.add(theme);
        this.state({ theme });
        this.updateIcon();
        document.querySelectorAll('[data-theme]').forEach(el =>
            el.classList.toggle('active', el.dataset.theme === theme)
        );
    },

    // Carousel transition mode (slide/fade)
    setCarouselMode(mode) {
        this.state({ carousel: mode });
        document.querySelectorAll('.sidebar').forEach(sb => {
            const track = sb.querySelector('.panel-track');
            if (!track) return;
            const panels = track.querySelectorAll('.panel');
            const side = sb.classList.contains('sidebar-left') ? 'left' : 'right';
            const idx = this.state()[side + 'Panel'] || 0;
            // Kill all transitions during mode switch
            track.style.transition = 'none';
            panels.forEach(p => p.style.transition = 'none');
            if (mode === 'fade') {
                panels.forEach((p, i) => p.classList.toggle('active', i === idx));
                track.style.transform = '';
                sb.classList.add('fade-mode');
            } else {
                track.style.transform = `translateX(-${idx * 100}%)`;
                sb.classList.remove('fade-mode');
                panels.forEach(p => p.classList.remove('active'));
            }
            // Force reflow then restore transitions
            track.offsetHeight;
            track.style.transition = '';
            panels.forEach(p => p.style.transition = '');
        });
        document.querySelectorAll('[data-carousel]').forEach(el =>
            el.classList.toggle('active', el.dataset.carousel === mode)
        );
    },

    // Apply a sidebar width to the DOM (no persistence). pct clamped 10..100,
    // rounded to whole percent. Used live while dragging the resize handle.
    applySidebarWidth(side, pct) {
        pct = Math.max(10, Math.min(100, Math.round(pct)));
        document.documentElement.style.setProperty(`--sidebar-width-${side}`, pct + '%');
        const input = document.querySelector(`.sidebar-width-spinner[data-side="${side}"]`);
        if (input && parseInt(input.value) !== pct) input.value = pct;
        return pct;
    },

    // Set + persist sidebar width (side = 'left' | 'right'). The spinner path
    // snaps to step 10; drag passes an already-whole percent for 1% precision.
    setSidebarWidth(side, pct, snap = true) {
        if (snap) pct = Math.round(pct / 10) * 10;
        pct = this.applySidebarWidth(side, pct);
        const key = side === 'left' ? 'sidebarWidthLeft' : 'sidebarWidthRight';
        this.state({ [key]: pct });
        return pct;
    },

    // Panel carousel: navigate to panel index.
    // When the chevron wraps (last→first or first→last), we keep sliding in
    // the chevron's direction by briefly offsetting the destination panel to
    // the far side of the track, sliding the track past the edge, then
    // snapping both back to the canonical position without animation.
    setPanel(side, index) {
        const sb = document.querySelector(`.sidebar-${side}`);
        if (!sb) return;
        const track = sb.querySelector('.panel-track');
        if (!track) return;
        const panels = track.querySelectorAll('.panel');
        const count = panels.length;
        if (count === 0) return;

        // If a previous wrap is mid-cleanup, cancel it and reset the dest panel
        if (track._wrapCleanup) {
            clearTimeout(track._wrapCleanup.timer);
            track._wrapCleanup.panel.style.transform = '';
            track._wrapCleanup = null;
        }

        const normalized = ((index % count) + count) % count;
        const isFade = sb.classList.contains('fade-mode');

        if (isFade) {
            panels.forEach((p, i) => p.classList.toggle('active', i === normalized));
        } else {
            const wrapForward = index >= count;
            const wrapBack = index < 0;
            if (wrapForward || wrapBack) {
                const destPanel = panels[normalized];
                destPanel.style.transform = wrapForward
                    ? `translateX(${count * 100}%)`
                    : `translateX(-${count * 100}%)`;
                track.offsetHeight; // commit layout before animating
                track.style.transform = wrapForward
                    ? `translateX(-${count * 100}%)`
                    : `translateX(100%)`;
                const timer = setTimeout(() => {
                    track.style.transition = 'none';
                    destPanel.style.transform = '';
                    track.style.transform = `translateX(-${normalized * 100}%)`;
                    track.offsetHeight;
                    track.style.transition = '';
                    track._wrapCleanup = null;
                }, 320);
                track._wrapCleanup = { timer, panel: destPanel };
            } else {
                track.style.transform = `translateX(-${normalized * 100}%)`;
            }
        }
        // Update dots
        sb.querySelectorAll('.carousel-dot').forEach((dot, i) => {
            dot.classList.toggle('active', i === normalized);
        });
        this.state({ [side + 'Panel']: normalized });
    },

    // Sidebar: pin/unpin (desktop)
    pinSidebar(side) {
        const sb = document.querySelector(`.sidebar-${side}`);
        if (!sb) return;
        const pinning = !sb.classList.contains('pinned');
        sb.classList.toggle('pinned', pinning);
        sb.classList.toggle('open', pinning);
        document.body.classList.toggle(side + '-pinned', pinning);
        this.state({ [side + 'Pinned']: pinning, [side + 'Open']: pinning });
        // Update pin icon
        const icon = sb.querySelector('.pin-toggle [data-lucide], .pin-toggle svg');
        if (icon && typeof lucide !== 'undefined') {
            const i = document.createElement('i');
            i.setAttribute('data-lucide', pinning ? 'pin-off' : 'pin');
            icon.replaceWith(i);
            lucide.createIcons({ nodes: [i] });
        }
    },

    // Restore state on page load
    restore() {
        const s = this.state();
        const desktop = window.innerWidth >= 1280;

        // Restore sidebar widths (verbatim — drag stores 1% precision)
        if (s.sidebarWidthLeft) this.applySidebarWidth('left', s.sidebarWidthLeft);
        if (s.sidebarWidthRight) this.applySidebarWidth('right', s.sidebarWidthRight);

        // Restore carousel transition mode
        const mode = s.carousel || 'slide';
        if (mode === 'fade') {
            document.querySelectorAll('.sidebar').forEach(sb => sb.classList.add('fade-mode'));
        }
        document.querySelectorAll('[data-carousel]').forEach(el =>
            el.classList.toggle('active', el.dataset.carousel === mode)
        );

        // Restore theme toggle buttons
        const theme = s.theme || (document.documentElement.classList.contains('dark') ? 'dark' : 'light');
        document.querySelectorAll('[data-theme]').forEach(el =>
            el.classList.toggle('active', el.dataset.theme === theme)
        );

        // Restore content-width toggle buttons (the narrow/wide class itself is applied
        // pre-paint by the <head> script; this just marks the active button).
        const width = (s.width === 'narrow' || s.width === 'wide') ? s.width : 'normal';
        document.querySelectorAll('[data-width]').forEach(el =>
            el.classList.toggle('active', el.dataset.width === width)
        );

        ['left', 'right'].forEach(side => {
            const sb = document.querySelector(`.sidebar-${side}`);
            if (!sb) return;
            const pinned = s[side + 'Pinned'] && desktop;
            const open = pinned || (s[side + 'Open'] && desktop);
            sb.classList.toggle('pinned', pinned);
            sb.classList.toggle('open', open);
            document.body.classList.toggle(side + '-pinned', pinned);
            // Set correct pin icon
            const icon = sb.querySelector('.pin-toggle [data-lucide], .pin-toggle svg');
            if (icon && pinned) icon.setAttribute('data-lucide', 'pin-off');
            // Restore panel carousel position
            const panelIndex = s[side + 'Panel'] || 0;
            if (panelIndex > 0) this.setPanel(side, panelIndex);
            else if (mode === 'fade') {
                // Ensure first panel is active in fade mode
                const panels = sb.querySelectorAll('.panel');
                if (panels[0]) panels[0].classList.add('active');
            }
        });

        // Restore tree expanded state
        const tree = document.querySelector('.tree');
        if (tree && Array.isArray(s.treeExpanded)) {
            const branches = tree.querySelectorAll('.tree-branch');
            branches.forEach((b, idx) => {
                const shouldExpand = s.treeExpanded.includes(idx);
                b.classList.toggle('collapsed', !shouldExpand);
                // Update folder icon
                const icon = b.querySelector('.tree-toggle [data-lucide="folder"], .tree-toggle [data-lucide="folder-open"]');
                if (icon) icon.setAttribute('data-lucide', shouldExpand ? 'folder-open' : 'folder');
            });
        }
    },

    // Initialize
    init() {
        this.updateIcon();
        this.restore();

        // Scheme links
        const s = this.state();
        document.querySelectorAll('[data-scheme]').forEach(el =>
            el.classList.toggle('active', el.dataset.scheme === (s.scheme || 'default'))
        );

        // Event delegation for clicks
        document.addEventListener('click', e => {
            const t = e.target;

            // Theme toggle (legacy icon button)
            if (t.closest('.theme-toggle')) { this.toggleTheme(); return; }

            // Theme buttons (Light/Dark)
            const themeBtn = t.closest('[data-theme]');
            if (themeBtn) { this.setTheme(themeBtn.dataset.theme); return; }

            // Carousel mode buttons (Slide/Fade)
            const carouselBtn = t.closest('[data-carousel]');
            if (carouselBtn) { this.setCarouselMode(carouselBtn.dataset.carousel); return; }

            // Content width buttons (Narrow/Normal/Wide)
            const widthBtn = t.closest('[data-width]');
            if (widthBtn) { this.setWidth(widthBtn.dataset.width); return; }

            // Scheme selector
            const scheme = t.closest('[data-scheme]');
            if (scheme) { e.preventDefault(); this.setScheme(scheme.dataset.scheme); return; }

            // Sidebar toggle
            const menuBtn = t.closest('.menu-toggle[data-sidebar]');
            if (menuBtn) { this.toggleSidebar(menuBtn.dataset.sidebar); return; }

            // Pin toggle
            const pinBtn = t.closest('.pin-toggle[data-sidebar]');
            if (pinBtn) { this.pinSidebar(pinBtn.dataset.sidebar); return; }

            // Carousel chevron
            const chevron = t.closest('.carousel-chevron[data-sidebar]');
            if (chevron) {
                const side = chevron.dataset.sidebar;
                const s = this.state();
                const cur = s[side + 'Panel'] || 0;
                this.setPanel(side, chevron.dataset.dir === 'prev' ? cur - 1 : cur + 1);
                return;
            }

            // Carousel dot
            const dot = t.closest('.carousel-dot[data-sidebar]');
            if (dot) {
                this.setPanel(dot.dataset.sidebar, parseInt(dot.dataset.panel, 10));
                return;
            }

            // Tree toggle (expand/collapse)
            const treeToggle = t.closest('.tree-toggle');
            if (treeToggle) {
                const branch = treeToggle.closest('.tree-branch');
                if (!branch) return;
                const collapsed = branch.classList.toggle('collapsed');
                // Swap folder icon
                const icon = treeToggle.querySelector('[data-lucide="folder"], [data-lucide="folder-open"], svg');
                if (icon && typeof lucide !== 'undefined') {
                    const i = document.createElement('i');
                    i.setAttribute('data-lucide', collapsed ? 'folder' : 'folder-open');
                    icon.replaceWith(i);
                    lucide.createIcons({ nodes: [i] });
                }
                // Persist expanded state
                const tree = branch.closest('.tree');
                if (tree) {
                    const branches = tree.querySelectorAll('.tree-branch');
                    const expanded = [];
                    branches.forEach((b, idx) => { if (!b.classList.contains('collapsed')) expanded.push(idx); });
                    this.state({ treeExpanded: expanded });
                }
                return;
            }

            // Sidebar group toggle (collapsible)
            const groupTitle = t.closest('.sidebar-group-title');
            if (groupTitle) {
                const group = groupTitle.closest('.sidebar-group');
                group?.classList.toggle('collapsed');
                return;
            }

            // Dropdown toggle
            const dropToggle = t.closest('.dropdown-toggle');
            if (dropToggle) {
                e.preventDefault();
                e.stopPropagation();
                const dd = dropToggle.closest('.dropdown');
                document.querySelectorAll('.dropdown.open').forEach(d => d !== dd && d.classList.remove('open'));
                dd?.classList.toggle('open');
                return;
            }

            // Close dropdowns on outside click
            if (!t.closest('.dropdown')) {
                document.querySelectorAll('.dropdown.open').forEach(d => d.classList.remove('open'));
            }
        });

        // Escape key closes dropdowns (sidebars are hamburger-only)
        document.addEventListener('keydown', e => {
            if (e.key === 'Escape') {
                document.querySelectorAll('.dropdown.open').forEach(d => d.classList.remove('open'));
            }
        });

        // System theme change
        matchMedia('(prefers-color-scheme:dark)').addEventListener('change', e => {
            if (!this.state().theme) {
                document.documentElement.classList.replace(e.matches ? 'light' : 'dark', e.matches ? 'dark' : 'light');
                this.updateIcon();
            }
        });

        // Responsive: hide pinned sidebars when viewport shrinks to mobile
        matchMedia('(min-width: 1280px)').addEventListener('change', e => {
            if (!e.matches) {
                // Viewport went below desktop - close all sidebars
                document.querySelectorAll('.sidebar.open').forEach(sb => {
                    sb.classList.remove('open', 'pinned');
                });
                document.body.classList.remove('left-pinned', 'right-pinned');
            } else {
                // Viewport went to desktop - restore pinned state
                this.restore();
            }
        });

        // Sidebar width spinners (independent left/right, 10-100%, step 10)
        document.querySelectorAll('.sidebar-width-spinner').forEach(input => {
            const apply = e => {
                const v = parseInt(e.target.value);
                if (Number.isFinite(v)) this.setSidebarWidth(e.target.dataset.side, v);
            };
            input.addEventListener('change', apply);
            input.addEventListener('blur', apply);
        });

        // Sidebar resize handles: inject one on each sidebar's inner edge and
        // wire pointer-drag → live width var, persisting the final width on release.
        ['left', 'right'].forEach(side => {
            const sb = document.querySelector(`.sidebar-${side}`);
            if (!sb || sb.querySelector('.sidebar-resizer')) return;
            const handle = document.createElement('div');
            handle.className = 'sidebar-resizer';
            handle.dataset.side = side;
            sb.appendChild(handle);
        });

        let drag = null;
        document.addEventListener('pointerdown', e => {
            const handle = e.target.closest('.sidebar-resizer');
            if (!handle) return;
            e.preventDefault();
            drag = { side: handle.dataset.side, pct: null };
            handle.setPointerCapture(e.pointerId);
            document.body.classList.add('resizing');
        });
        document.addEventListener('pointermove', e => {
            if (!drag) return;
            const vw = window.innerWidth;
            const raw = drag.side === 'left'
                ? (e.clientX / vw) * 100
                : ((vw - e.clientX) / vw) * 100;
            drag.pct = this.applySidebarWidth(drag.side, raw);
        });
        const endDrag = () => {
            if (!drag) return;
            document.body.classList.remove('resizing');
            if (drag.pct !== null) {
                const key = drag.side === 'left' ? 'sidebarWidthLeft' : 'sidebarWidthRight';
                this.state({ [key]: drag.pct });
            }
            drag = null;
        };
        document.addEventListener('pointerup', endDrag);
        document.addEventListener('pointercancel', endDrag);

        // Scroll detection: seamless topnav/sidebar header effect
        const onScroll = () => document.body.classList.toggle('scrolled', window.scrollY > 0);
        window.addEventListener('scroll', onScroll, { passive: true });
        onScroll();

        // Lucide icons
        if (typeof lucide !== 'undefined') lucide.createIcons();

        // Remove preload class to enable transitions (after state restored)
        requestAnimationFrame(() => document.documentElement.classList.remove('preload'));
    }
};

// Auto-init
document.readyState === 'loading'
    ? document.addEventListener('DOMContentLoaded', () => Base.init())
    : Base.init();

// Global exports
window.Base = Base;
window.showToast = (m, t) => Base.toast(m, t);
window.toggleTheme = () => Base.toggleTheme();
}