feat(tracker): Gantt — #3b dependencies + cascade + critical path by MichaelUray · Pull Request #10855 · hcengineering/platform

MichaelUray · May 18, 2026

Summary

Brings dependencies, cascade-scheduling, and critical path to the Gantt. Issues can be linked through typed IssueRelation Mixins (FS / SS / FF / SF), the canvas paints arrow connectors between dependent bars, dragging a bar with downstream dependencies opens a "cascade confirm" popup that previews and atomically commits the shift across the whole dependency tree, and an optional critical-path mode highlights the longest dependency chain plus the per-issue slack.

This is the largest single PR in the stack (~6 000 lines, 61 files). Most of that is the dependency simulation library + its test suite, plus the cascade-confirm UI.

What's in this PR (+79 incremental commits)

Dependency editing (PR4b family)

feat(tracker) predecessor / successor direction chooser
feat(tracker) readable Dependencies panel + IssueRelation activity presenter
feat(tracker) unified hierarchy add chooser + resizable pickers
fix(tracker) scoped dependency picker to current project; wrap ObjectPopup so items render
fix(tracker-resources) confirm dialog before dependency removal
Connector drag — single event path through the canvas, target drop indicator, connector dot above arrows

Cascade scheduling (PR4b)

simulateCascade library — FS push + no-cascade, SS/FF/SF anchor model, pull-predecessor support, cycle bailout
commitWithCascade — body-drag wiring + single-confirm flow
ConfirmCascadePopup with mini-timeline preview
Permission check before no-cascade return; popup polish + legacy confirm parity
Comprehensive test suite — cycle bailout, chain + iteration-overflow, parent-drag + merge, hidden-issue scope, permission-denied

Critical path (PR5)

Critical-path types + topological-sort scaffold with cycle bailout
View-options — ganttCriticalPath + ganttSlackColumn toggles
Violated bars paint red
Critical-path UI wiring + i18n keys (en)

Misc

feat(tracker-resources) show Gantt IssueRelations in the issue editor
Export / keyboard-shortcut scaffolding and DE i18n hooks used by later polish work
fix(notification-resources) return ArrayBuffer-backed push key
Various stabilization fixes (Gantt viewport, connectors, bar editing, pan-from-bar, dependency init)

Stack overview

#	Branch	Scope	Status
PR1	`…pr1-schema`	schema + version bump	merged ✅
PR2	`…pr2-readonly`	read-only viewlet	draft
PR3a	`…pr3a-edit`	drag / resize / dnd	draft
PR3b	`…pr3b-deps-cascade-cp`	this PR — dependencies + cascade + critical path	draft
PR4	`…pr4-polish`	polish	draft
PR5	`…pr5-tier2`	undo, saved views, bulk, auto-scheduling	draft
PR6	`…pr6-tier3-virtualization`	virtualization	draft
PR7	`…pr7-tier4`	mobile + tree + predecessor col + visual deps + notifications	draft
Docs (huly-docs#70)	`MichaelUray:feat/gantt-section`	reference + screenshots	open

Marked as draft to signal stack dependency on PR1+PR2+PR3a.

How to review

→ Fork compare: PR3a...PR3b — 79 commits, 61 files

Testing

8 cascade test files covering FS push, SS/FF/SF anchors, pull-predecessor, cycle bailout, chain + iteration overflow, parent-drag + merge, hidden-issue scope, permission-denied.
Critical-path topo-sort guarded against cycles; destroy timer covered by component lifecycle.
Validated on a production-style deployment on 2026-05-18.

DCO

All commits are Signed-off-by.

huly-github-staging · May 18, 2026

Connected to Huly®: UBERF-16446

Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

…reactive queries PR 2 read-only Gantt is now end-to-end functional: - Two reactive queries (issues, milestones) - buildLayout(issues) -> rows with depth + isSummary - createTimeScale(zoom, dateRange.from) -> date<->px math - Summary ranges computed per parent issue from children's date span - Local zoom state (Day/Week/Month/Quarter) - no ViewletPreference plumbing - Horizontal scroll via canvas-scroller; vertical scroll moves Sidebar via translate Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

- viewlets.ts: register IssueGantt AFTER IssueKanban so List stays default - viewlets.ts: drop showColorsViewOption (canvas does not honour it yet) - GanttBar.svelte: normalise reversed startDate>dueDate ranges UX: - GanttSidebar adds Title column with sticky two-column header - Sticky time-scale header decoupled from milestone strip (layout fix) - Per-row jump-to-bar arrow (Plane-style) when bar is offscreen - ResizeObserver initialises viewport on mount and on resize Milestones as Gantt rows + collapse: - Milestones group their issues as nested children (depth+1) - Collapsible toggle per parent row, local collapsedIds Set - Milestone summary bar uses existing GanttBar with aggregated range Icon: - Register tracker.icon.Gantt to #timeline svg (Gantt pictogram) Tests: 25/25 jest pass; svelte-check 0 errors. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

- Visible top row with [«] [Today] [»] | Day Week Month Quarter | ⚙ - Today scrolls to current date, prev/next page-scroll by 80% viewport - Settings popover toggles Issue-Code and Title columns Layout: - Bigger row height (28→36) and bar font (11→13px) for readability - Sidebar reworked into flex-column with separate clipped rows region so scrolled rows can never paint over the sticky header(layout fix) - Drag handle between sidebar and canvas (120–600px range) - ResizeObserver re-syncs viewport on drag/resize/zoom changes Interaction: - Vertical gridlines aligned to time-scale ticks (Plane-style) - Row hover highlights both sidebar and canvas, with rich HTML tooltip (issue title + start + due + duration) - Title click in sidebar dispatches openIssue → showPanel(EditIssue) - Double-click on canvas bar dispatches openIssue - Wheel forwarding from sidebar to canvas-scroller (vertical scroll works while hovering issue list) - Pointerdown + drag on empty canvas pans both axes - Jump-to-bar buttons now use the bar's true left-edge target Tests: 25/25 jest pass; svelte-check 0 errors. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

totalCanvasWidth (was viewport width), with viewBox in scroll-content coordinates. The sticky header lives in the same coordinate system as the canvas-stack so horizontal scroll no longer clips the time-axis. - showPanel uses tracker.component.EditIssue instead of the hardcoded string + 'as any' cast. - Removed unused GanttToolbar.svelte and GanttMilestoneFlag.svelte (dead files since toolbar moved into GanttView and milestone flags became rows). Toolbar: - Time-navigation cluster: ⏮ « Today » ⏭ + native date picker that jumps to a specific date. Replaces the lone Today button. Interaction polish: - Sidebar wheel forwarding now uses direct scrollTop/scrollLeft mutation with deltaMode scaling — same speed as native canvas scroll. - TodayMarker no longer hides when scrolled offscreen (SVG width handles clipping); milestone reference lines render unconditionally for the same reason. Tests: 25/25 jest pass; svelte-check 0 errors. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

- Register two ToggleViewOptions on the Gantt viewlet: ganttShowIssueCode (default OFF) and ganttShowTitle (default ON). These show up in the standard Customize-View dropdown. - Drop the per-component settings popover from GanttView; sidebar column visibility now reads viewOptions directly. - Hover tooltip always surfaces the issue code (e.g. OSTRO-31), even when the issue-code column is hidden. - IntlStrings + en/de/es/fr/it/ja/pt/ru/zh/cs translations added. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

Bug: .gantt-sidebar rendered at its natural height (≈ rows × 36px), and .sidebar-host had overflow:visible, so for many issues the sidebar visually overflowed gantt-body which in turn made gantt-body's scrollHeight balloon to the sidebar's natural height. The result was that scrolling over the sidebar appeared to scroll the page area instead of just the canvas. Fix: - .sidebar-host now overflow:hidden + height:100% + flex-column - .gantt-sidebar height:100% + flex:1 1 auto so it fills the host rather than stretching past it Verified: gantt-body scrollHeight == clientHeight, only .canvas-scroller has scrollable content. Wheel-forward over the sidebar moves canvas-scroller and the sidebar transform together. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

…ticky) Replaces the dual-scroller architecture (sidebar + canvas as siblings, manual wheel-forwarding for the sidebar) with a single .gantt-scroller that wraps both columns in a CSS grid. Sidebar uses position:sticky left:0 so it stays at the left edge during horizontal scroll, while the time-axis header uses position:sticky top:0. Browser handles all wheel events natively at native speed. Why: the previous design rendered the sidebar at its natural height (rows × 36px), which could be much larger than the visible viewport. overflow:visible on the sidebar host let it bleed past gantt-body and made the page area appear to scroll. The wheel-forward hack only worked for synthetic events; in real browsers, wheel events over the sidebar either scrolled too slowly (deltaMode mismatch) or stopped firing. Layout (CSS grid, 2 rows × 3 cols): - (1,1) sticky top+left: corner with column titles - (1,2) sticky top: resize-corner (5px gutter) - (1,3) sticky top: time-axis header - (2,1) sticky left:0: GanttSidebar rows - (2,2) sticky left:Wpx: vertical resize-handle - (2,3) normal: GanttCanvas SVG overflow:scroll on .gantt-scroller forces both scrollbars to always render — the user explicitly asked for visible scrollbars (Plane parity). GanttSidebar drops its scrollTop prop and the transform-based row positioning; rows now flow naturally inside the scroll container. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

The standard NewIssueHeader is rendered by the Tracker shell outside the viewlet. Inside the Gantt view this looked like the action was missing. Add a prominent + New issue button in the gantt-toolbar that opens CreateIssue with the current project space pre-selected, matching the behaviour of NewIssueHeader. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

introduced at the GanttCanvas level — canvasEl.addEventListener for pointerdown + mousedown delegating to startConnectorFromIssueId via .closest('.gantt-connector'). This violated the 'single event path' commit message and worse, GanttConnectorDot only listens to mousedown while this delegate listened to both, so a single physical click on the dot would fire pointerdown via the canvas path AND mousedown via the Svelte path with no debounce shared between them. Removed everything redundant from GanttCanvas.svelte: - canvasEl let + bind:this={canvasEl} on the <svg> - forwardConnectorDown (was attached to the now-removed in-bar dot) - startConnectorFromIssueId - onCanvasConnectorDown - onMount / onDestroy hooks that wired the listeners - on:connectorDown={forwardConnectorDown} on the bar-render <GanttBar> - onMount + onDestroy imports (no remaining uses in this file) Surviving path is exactly what the v85 commit message described: GanttConnectorDot <circle.gantt-connector-hit> on:mousedown=onDown → dispatch('connectorDown', { cursorX, cursorY }) // Svelte → overlay <GanttConnectorDot on:connectorDown={…}> inline handler in GanttCanvas converts to { source, originPx } and dispatches → GanttView on:connectorDown={handleConnectorDown} → reduce(state, mousedown-connector) + attachWindowDragListeners Net diff: -45 lines, including imports. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

…ab, intra-project, remove button User-reported issues with the issue-editor Dependencies panel: 1. 'Search for Task' list empty after first + click, then Relations row disappears entirely. Root cause: ObjectSearchPopup's ignore prop becomes $nin: <Ref[]> in the DocumentQuery — the CockroachDB adapter crashes on JSONB $nin with 'unsupported comparison operator: _id != ALL …'. The thrown query also tears down the live-query for the panel, so the panel itself disappears once the error surfaces. Fix: drop the ignore param entirely. Filter self/duplicate/cross- project in the result callback instead. 2. + click opens the popup without focusing the Issues tab. Fix: pass allowCategory: [tracker.completion.IssueCategory] so only the Issues tab is shown — eliminates the wrong-default-tab problem and removes irrelevant tabs (Person, Project, Document) for a dependency picker. 3. Picker shows cross-project issues. Phase-1 only supports intra- project dependencies. Fix: when the result space != current issue's space, reject with a notification banner instead of writing the relation. Cycle check (PR4a wouldCreateCycle) also applied to the callback path so the issue-editor flow has the same protections as the Gantt connector drag. 4. No way to remove a dependency from the panel. Fix: per-row hover-only '×' button that calls ops.removeDoc on the IssueRelation. Same permission gate as the editor: source-side editable user only. 5. Identifier displayed prominently, title secondary. Fix: swap — title primary, identifier moved into the native title tooltip. Same swap applied to IssueRelationPresenter so activity entries read 'New related to: FS +2d → Storage silo construction' (instead of '… → OSTRO-29 Storage silo'). The OSTRO-29 identifier stays accessible via hover tooltip on the activity row. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

Replace ObjectSearchPopup with ObjectPopup using docQuery: { space: issue.space } so cross-project issues no longer appear in the dependency picker — matches the SetParent picker convention (Phase-1 deps are intra-project only). ignoreObjects excludes self and existing successors before the list is rendered; cycle detection stays in the callback because it needs the full relation graph. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

Bare ObjectPopup with no slot="item" loads docs but renders nothing — its default item fragment is gated on {#if $$slots.item}. v88 invoked ObjectPopup directly via showPopup() which can't pass slots, so the dependency picker showed an empty list. Add SelectDependencyIssuePopup wrapper that mirrors SetParentIssueActionPopup's structure: ObjectPopup with the required slot="item" (status icon + identifier + title), plus docQuery: { space: issue.space } and ignoreObjects to keep the picker project-scoped and excluding self/existing successors. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

The 'Link existing sub-issue' affordance already existed as an icon-only ghost Button next to QueryIssuesList's prominent '+ Add sub-issue'. It was undiscoverable: only a hover-tooltip revealed what it did. Add an inline label so the action reads visibly next to its icon, and provide a German translation for the i18n key. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

UX: replace direct + buttons for parent/sub-issue hierarchy with a two-option chooser popup (HierarchyAddPopup) — both directions now visibly offer 'Create new' AND 'Link existing' regardless of whether the issue already has children. Plumbing: - HierarchyAddPopup (new) — chooser with 'parent' | 'sub' direction - CreateIssue dispatches close-with-id on success so the new 'Create new parent' flow can write attachedTo on the calling issue - QueryIssuesList accepts customAddAction prop; slot=buttons ungated so any caller-supplied accessory buttons stay visible without sub-issues - SubIssues passes customAddAction that opens the chooser; legacy icon-only LinkSubIssue button removed (chooser supersedes it) - EditIssue Set-parent button opens chooser; routes 'create' to CreateIssue and on close re-ranks current issue under new parent Resizable pickers: - new ObjectPopup/DocPopup width: 'resizable' value - popups.scss .width-resizable: 48rem × 36rem default, resize: both, min 28rem×16rem, max 96vw×96vh - SelectDependencyIssuePopup, SetParentIssueActionPopup, LinkSubIssueActionPopup default to 'resizable' so the existing call sites pick up the larger draggable pickers automatically i18n: AddParentIssue, AddSubIssue, CreateNewParentIssue, CreateNewSubIssue, LinkExistingParentIssue in en + de. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

The Dependencies-panel "+" button silently wrote outgoing (successor) relations only. Add a two-option chooser mirroring the hierarchy add chooser pattern: "Add predecessor" / "Add successor" with directional hint tooltips. Predecessor flow attaches the new IssueRelation to the picked issue (picked is the source), permission-gates on the picked issue, and the picker's ignore set uses incoming.attachedTo refs rather than outgoing.target refs. extraIgnore prop added to SelectDependencyIssuePopup so callers don't have to wrap raw ids in fake IssueRelation shapes. i18n: AddDependency, AddPredecessor, AddSuccessor + direction hints (en + de). Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

…view comments The dependency-add cycle check in the issue-editor panel used only incoming + outgoing slices of the current issue: wouldCreateCycle(sourceId, targetId, [...incoming, ...outgoing]) That catches direct A→A and direct duplicates but misses transitive cycles. Example: with C→B and B→A already in place, adding A→C from A's panel passes the check because C→B is not in A's local slice — the DFS never sees the back-edge B→A→C from the C side, so the new edge silently closes the loop. The Gantt view already does a project-wide check; the issue panel must match. Add a third live-query bound to { space: issue.space } that loads all relations in the project, and pass the full list to wouldCreateCycle on add. The visible Predecessors/Successors lists keep using the existing incoming/outgoing slices. gantt + dependency code. The substance of each note is preserved but rephrased so the comments document the technical reason, not the review thread that surfaced it. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

The optional-chained `getAttribute('content-type')?.includes(...)` yields `boolean | undefined`; guard the nullish case explicitly with `?? false` to satisfy @typescript-eslint/strict-boolean-expressions without changing behaviour (absent/non-JSON content-type still marks recording unavailable). Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

…cade tier Apply the reviewer-approved fix patterns to the pre-existing eslint errors surfaced by the CI formatting job in the PR3b feature code: - no-confusing-void-expression: block-body arrows for void event handlers (GanttCanvas/GanttSidebar/ConfirmCascadePopup/GanttHelpPopup dblclick/click/ cleanup handlers). - no-misused-promises: single stable void-wrapper (onWindowPointerUp) shared by attach/detach so the listener reference stays paired. - prefer-optional-chain: nested {#if} guards preserving TS narrowing (GanttCanvas connector overlay, GanttDependencyLayer) and loose == null form. - no-invalid-void-type: dispatcher payload void -> undefined (matches the codebase convention). - strict-boolean-expressions: explicit zero / nullish handling in dependency-router and exporter. - test files: drop non-null assertions in favour of optional chaining, remove unused imports/vars, rename snake_case locals to camelCase. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

…ter develop merge Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

…useup wrapper The cascade merge + eslint import consolidation left three type errors svelte-check flags in the PR3b GanttView: - the './lib/types' import got merged into an `import type { ... }` with redundant inner `type` modifiers (invalid syntax) — flatten to plain names; - `getEventPositionElement` was dropped from the @hcengineering/ui import — restore it (used by openGanttMenu); - an onWindowMouseUp wrapper carried over from the PR3a edit tier referenced handleCanvasMouseUp, which PR3b renamed to handleCanvasPointerUp (wrapped as onWindowPointerUp) — remove the now-dead, dangling wrapper. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

Der Add-Sub-Issue-Button oeffnet seit bc2414a (unified hierarchy add chooser) nicht mehr direkt das CreateIssue-Formular, sondern zuerst den HierarchyAddPopup mit den Optionen 'Create new sub-issue' / 'Link existing as sub-issue'. Die Playwright-page-objects clicken den Zwischenschritt jetzt mit, bevor das Formular gefuellt wird: - IssuesPage.clickOnSubIssues (subissues.spec 'create sub-issue') - IssuesDetailsPage.clickButtonAddSubIssue (subissues.spec 'Edit a sub-issue' / 'Delete a sub-issue') Keine Assertion abgeschwaecht, kein Timeout erhoeht — nur der neue UI-Pfad wird durchlaufen (analog zur milestone-page-object-Anpassung in Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com> hcengineering#10851).

…ional The Gantt schema PR (ControlPanel) adds several unconditional rows between Assignee and Estimation in the issue side panel (Start date, Due date, Deadline, Scheduling mode). The prior positional locator (//span[text()="Estimation"]/../div/button)[N] had to be re-indexed each time a row was added and had drifted to [5], which no longer resolves to the Estimation editor button — so editIssue's estimation step could never open the EditBoxPopup and 'div.selectPopup input' never appeared, failing issues.spec:49 'Edit an issue' and subissues.spec:52 'Edit a sub-issue'. Switch buttonEstimation to the same following-sibling path already used by textEstimation, which targets the Estimation label's own editor button regardless of how many rows precede it. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

Restore the ru.json dependency/cascade i18n keys and the final Gantt component sources that were carried into this branch via a merge commit. Linearizing the branch onto the new develop dropped that merge, so this commit re-materializes the exact intended tip content (develop does not touch these files). Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

Adds a Gantt viewlet to the Tracker, plus the filter/search rework the Gantt toolbar shares with the List and Kanban viewlets. Scope, roughly in the order the feature grew: * Read-only Gantt viewlet: time-scale canvas, sidebar columns, today marker, zoom levels (day/week/month/quarter), jump-to-start/end/date navigation and per-viewlet view options. * Editable bars: drag to move, resize handles for start/due date, drag on an unscheduled row to schedule it, optional confirm prompts and permission/conflict handling on commit. * Dependencies: FS/SS/FF/SF relations with lag, dependency editor and arrows, cascade shifting with cycle detection, and critical-path plus slack computation. A dependency shift raises a server-side notification for the affected assignees. * Visual polish: bar labels (left/inside/right), quick-info popover, milestone markers, deadline markers, non-working-day shading and keyboard-shortcut help. * Tier 2: undo/redo, saved views, bulk selection and bulk drag, auto-scheduling with manual pinning. * Tier 3: row virtualization for large projects. * Tier 4: mobile (read-only) layout, tree view with hierarchy breadcrumbs and a predecessor column. * Filter and search rework: inline filter chips with an overflow popover, an advanced search input with field prefixes routed to an Elasticsearch query_string branch, search scope and match-highlight view-option toggles, and a zero-hit empty state. * Bar coloring by status/priority/assignee/component/milestone, overdue and blocked overlays, and sub-issue progress fill. * Gantt toolbar export to PNG and to PDF (via the browser print dialog) and a fullscreen toggle. Both live in the Gantt toolbar only. New runtime dependencies in plugins/tracker-resources, all MIT licensed: * @tanstack/svelte-virtual - row virtualization for sidebar and canvas * html2canvas - rasterizes the Gantt SVG for the PNG export * jspdf - wraps that raster into the PDF export Locales: en, de and ru carry the full set of new strings. The other locales are mostly unchanged and fall back to English at runtime; the few new keys they do define are still English placeholders. Translating those is left to native speakers. This consolidates the previously separate pull requests hcengineering#10853, hcengineering#10854, hcengineering#10855, hcengineering#10856, hcengineering#10857, hcengineering#10858, hcengineering#10859, hcengineering#10872 and hcengineering#10873 into a single change, as requested on hcengineering#10853, so the whole feature can be reviewed and tested in one place. The review feedback given on hcengineering#10853 is included. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

Adds a Gantt viewlet to the Tracker, plus the filter/search rework the Gantt toolbar shares with the List and Kanban viewlets. Scope, roughly in the order the feature grew: * Read-only Gantt viewlet: time-scale canvas, sidebar columns, today marker, zoom levels (day/week/month/quarter), jump-to-start/end/date navigation and per-viewlet view options. * Editable bars: drag to move, resize handles for start/due date, drag on an unscheduled row to schedule it, optional confirm prompts and permission/conflict handling on commit. * Dependencies: FS/SS/FF/SF relations with lag, dependency editor and arrows, cascade shifting with cycle detection, and critical-path plus slack computation. A dependency shift raises a server-side notification for the affected assignees. * Visual polish: bar labels (left/inside/right), quick-info popover, milestone markers, deadline markers, non-working-day shading and keyboard-shortcut help. * Tier 2: undo/redo, saved views, bulk selection and bulk drag, auto-scheduling with manual pinning. * Tier 3: row virtualization for large projects. * Tier 4: mobile (read-only) layout, tree view with hierarchy breadcrumbs and a predecessor column. * Filter and search rework: inline filter chips with an overflow popover, an advanced search input with field prefixes routed to an Elasticsearch query_string branch, search scope and match-highlight view-option toggles, and a zero-hit empty state. * Bar coloring by status/priority/assignee/component/milestone, overdue and blocked overlays, and sub-issue progress fill. * Gantt toolbar export to PNG and to PDF (via the browser print dialog) and a fullscreen toggle. Both live in the Gantt toolbar only. * Responsive toolbar: the lifted toolbar measures the width it gets and collapses whole control tiers into a "…" popover, least important first, so Fullscreen and More-actions stay reachable from 390 px upwards. This needs one opt-in flag on the shared header component (`Header`/`SpaceHeader` `shrinkSearch`), which swaps which button group is the row's shrink target; it defaults to false, so no other header consumer changes behaviour. New runtime dependencies in plugins/tracker-resources, all MIT licensed: * @tanstack/svelte-virtual - row virtualization for sidebar and canvas * html2canvas - rasterizes the Gantt SVG for the PNG export * jspdf - wraps that raster into the PDF export Locales: en, de and ru carry the full set of new strings. The other locales are mostly unchanged and fall back to English at runtime; the few new keys they do define are still English placeholders. Translating those is left to native speakers. This consolidates the previously separate pull requests hcengineering#10853, hcengineering#10854, hcengineering#10855, hcengineering#10856, hcengineering#10857, hcengineering#10858, hcengineering#10859, hcengineering#10872 and hcengineering#10873 into a single change, as requested on hcengineering#10853, so the whole feature can be reviewed and tested in one place. The review feedback given on hcengineering#10853 is included. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

Adds a Gantt viewlet to the Tracker, plus the filter/search rework the Gantt toolbar shares with the List and Kanban viewlets. Scope, roughly in the order the feature grew: * Read-only Gantt viewlet: time-scale canvas, sidebar columns, today marker, zoom levels (day/week/month/quarter), jump-to-start/end/date navigation and per-viewlet view options. * Editable bars: drag to move, resize handles for start/due date, drag on an unscheduled row to schedule it, optional confirm prompts and permission/conflict handling on commit. * Dependencies: FS/SS/FF/SF relations with lag, dependency editor and arrows, cascade shifting with cycle detection, and critical-path plus slack computation. A dependency shift raises a server-side notification for the affected assignees. * Visual polish: bar labels (left/inside/right), quick-info popover, milestone markers, deadline markers, non-working-day shading and keyboard-shortcut help. * Tier 2: undo/redo, saved views, bulk selection and bulk drag, auto-scheduling with manual pinning. * Tier 3: row virtualization for large projects. * Tier 4: mobile (read-only) layout, tree view with hierarchy breadcrumbs and a predecessor column. * Filter and search rework: inline filter chips with an overflow popover, an advanced search input with field prefixes routed to an Elasticsearch query_string branch, search scope and match-highlight view-option toggles, and a zero-hit empty state. * Bar coloring by status/priority/assignee/component/milestone, overdue and blocked overlays, and sub-issue progress fill. * Gantt toolbar export to PNG and to PDF. Both re-render the chart from the Gantt's own row model into a stand-alone SVG and rasterise that, so the output does not depend on the current scroll position or on rows that virtualization has not mounted; the PDF embeds the same raster as a real file download, not a browser print. Plus a fullscreen toggle. All of it lives in the Gantt toolbar only. * Responsive toolbar: the lifted toolbar measures the width it gets and collapses whole control tiers into a "…" popover, least important first, so Fullscreen and More-actions stay reachable from 390 px upwards. This needs one opt-in flag on the shared header component (`Header`/`SpaceHeader` `shrinkSearch`), which swaps which button group is the row's shrink target; it defaults to false, so no other header consumer changes behaviour. New runtime dependencies in plugins/tracker-resources, all MIT licensed: * @tanstack/svelte-virtual - row virtualization for sidebar and canvas * jspdf - wraps the exported chart raster into the PDF download Locales: en, de and ru carry the full set of new strings. The other locales are mostly unchanged and fall back to English at runtime; the few new keys they do define are still English placeholders. Translating those is left to native speakers. This consolidates the previously separate pull requests hcengineering#10853, hcengineering#10854, hcengineering#10855, hcengineering#10856, hcengineering#10857, hcengineering#10858, hcengineering#10859, hcengineering#10872 and hcengineering#10873 into a single change, as requested on hcengineering#10853, so the whole feature can be reviewed and tested in one place. The review feedback given on hcengineering#10853 is included. Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

MichaelUray · Jul 24, 2026

Superseded by #10992, which consolidates the whole Gantt series into a single PR as requested on #10853. Continuing review there.

MichaelUray added 21 commits July 9, 2026 06:42

feat(tracker): register Gantt view tab (placeholder UI)

0e87184

Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

feat(tracker-resources): add Gantt lib types

4868b15

Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

test(tracker-resources): add failing Gantt time-scale tests

5399bf6

Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

feat(tracker-resources): implement Gantt time-scale lib

de2652e

Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

test(tracker-resources): add failing Gantt layout tests

1ba2a15

Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

feat(tracker-resources): implement Gantt layout lib

4ef672f

Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

feat(tracker-resources): add GanttHeader.svelte

e7e0472

Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

feat(tracker-resources): add GanttBar.svelte (regular + summary claws)

2173ab4

Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

feat(tracker-resources): add GanttTodayMarker.svelte

af2d60a

Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

feat(tracker-resources): add GanttMilestoneFlag.svelte

84355bd

Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

feat(tracker-resources): add GanttCanvas.svelte

cc37678

Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

feat(tracker-resources): add GanttSidebar.svelte

528eac4

Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

feat(tracker-resources): add GanttToolbar.svelte (zoom buttons)

d257021

Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

MichaelUray added 16 commits July 9, 2026 07:03

fix(tracker-resources): confirm dialog before dependency removal

45d3240

Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

chore(tracker-resources): apply prettier + eslint --fix formatting af…

c80fcf2

…ter develop merge Signed-off-by: Michael Uray <michaeluray@users.noreply.github.com>

MichaelUray force-pushed the feat/gantt-upstream-pr3b-deps-cascade-cp branch from fda5503 to 2a865aa Compare July 9, 2026 07:45

MichaelUray mentioned this pull request Jul 24, 2026

feat(tracker): Gantt chart for the issue tracker #10992

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MichaelUray closed this Jul 24, 2026

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feat(tracker): Gantt — #3b dependencies + cascade + critical path#10855

MichaelUray commented May 18, 2026 •

edited

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MichaelUray commented Jul 24, 2026

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MichaelUray commented May 18, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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Summary

What's in this PR (+79 incremental commits)

Dependency editing (PR4b family)

Cascade scheduling (PR4b)

Critical path (PR5)

Misc

Stack overview

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Testing

DCO

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huly-github-staging Bot commented May 18, 2026

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MichaelUray commented Jul 24, 2026

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MichaelUray commented May 18, 2026 •

edited

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