* Command API: refuse a page index past the end, and say how many pages went
layout.pages.delete answered ok for an index past the last page and deleted nothing for it, so a caller off by one removed a different range and read a success; on a 336-page book that is page 337 instead of 336. Both commands now check every index against the document and refuse it with the sentence the MCP export commands have used since #70, return how many pages they touched so a no-op and a success are told apart, and state in their params that the indices count from 0.
* Pages: count the pages a delete will remove, not the indices it was given
delete_pages refused [0, 0, 1, 2] on a four-page document as if it would leave none, because the guard measured the length of the list instead of the pages it names. Same family as the index check next to it: the count was of the wrong thing. A test in the engine pins it.
* Pages: refuse a malformed page list instead of dropping what it cannot read
Review finding: page_indices used filter_map, so a list holding a string, a fraction or nothing at all was silently shortened — the caller was told a page was handled when it never was, which is the same mistake the command now refuses one level down. Every entry must be a whole number, and pages must be a list. Tests cover all three shapes, and the new test functions carry docstrings so the coverage check has nothing to report.
* Pages: more parents and alternate layouts as columns in the Pages panel
Parents
- layout.parents.duplicate copies a parent spread (pages and items) under the next free prefix.
- layout.parents.options also renames the prefix (1-4 characters, no "-") and the name; basedOn is now optional.
- layout.parents.new validates prefix and name and takes basedOn.
- Pages panel: a "+ New Parent" row adds B, C… in one click. The parents' context menu and the panel menu have New Parent…, Duplicate Parent Spread, Parent Options… and Delete Parent, named after the selected parent, or a submenu of the parents when none is selected. A new Parent Options dialog has Prefix, Name and Based on Parent.
Alternate layouts
- Section.layout marks the section that starts a layout; Document::layouts() lists them.
- layout.createAlternate copies one layout (from), not every page; new layout.alternate.duplicate, .delete and .options (rename, resize).
- Each layout starts a spread of its own; sections now follow their pages when pages are inserted or deleted.
- Pages panel: with more than one layout, each is a column side by side with a header (name, size, ▾ menu: create, duplicate, options, delete) and a + column to add one.
Tests cover the commands' happy and error paths, undo, serde, and the panel's menus and columns.
* Pages: address review of parents and alternate layouts
- Deleting a layout's first page keeps the layout's name when another section lands on the same page.
- A parent's full label (prefix-name) must be unique; parents may still share a prefix.
- Alternate layout names round-trip through IDML (Section AlternateLayout / AlternateLayoutLength).
- The Pages panel's selected parent is per document and no longer saved in ui.json.
- Layout ▸ Parent Options… and Alternate Layout Options… open the Pages panel's dialogs.
- The Pages panel computes the layouts once per frame.
* Export: layouts and versions in one export, with presets; print chosen layouts
- file.exportBatch writes the chosen alternate layouts (a file per layout, or all in one PDF) in several versions at once: PDF with any marks, bleed and standard, PNG or JPEG at a resolution. Each version goes in a folder of its own, and file names come from a template ({document}, {layout}, {version}, {date}). Names are made safe and unique. dryRun lists the files; without a dir the files come back as base64 (web).
- Export presets: file.exportPresets, file.saveExportPreset, file.deleteExportPreset, kept in prefs.json. Built-ins: Print + Screen, Press PDF per Layout, Images per Layout, All Layouts in One PDF.
- file.print takes layouts and separateJobs (a job per layout, titled after it).
- File ▸ Export Layouts and Versions… dialog: preset, layouts, versions (add from templates, duplicate, remove, quick PDF choices or custom marks), name template, and a live list of the files it will write. It opens from a layout column's ▾ menu as "Export Layout…". The desktop asks for a folder; the web downloads each file.
- The Print dialog prints chosen layouts, together or separately; the Export PDF dialog fills the page range from a layout.
- crate::io::create_dir_all keeps folder creation inside the automation write root.
* Export: address review of layouts and versions
- An exported image is capped at 80 million pixels, the limit EPUB page images already use.
- The Print dialog stays open and says why when no layout is chosen.
- Clicking a layout column's header leaves Edit Parents before going to the layout's first page.
* Pages, Export: address maintainer review of layouts and versions
- Sections (and the layouts they start) follow a moved page, as they do inserted and deleted
ones: moving a page across a layout boundary no longer moves the other pages between layouts.
Delete and move share `settle_sections`.
- Alternate Layout Options resizes only pages whose size changes: renaming a layout no longer
forces every page to the first page's size.
- Export file and folder names that are Windows device names (CON, NUL, COM1…) get a leading `_`.
- An export without `dir` refuses past 512 MB of files instead of building them all in memory.
- A file that fails partway through an export to a folder says how many were already written.
- Parent Options and Print keep the dialog open, with what was typed and why, when the engine
refuses.
- A duplicated layout's default name stays within the 100-character limit.
- rustfmt.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* Pages: Alternate Layout Options sends the size only when it changed
The dialog starts at the layout's first page's size, so the engine couldn't tell a rename from a
resize to that size. The dialog now leaves out a width or height still at its starting value, and
`layout.alternate.options` resizes every page of the layout when a size is given, as before.
The test moves to the UI, where the size was coming from.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---------
Co-authored-by: FredApps <153173854+FredApps@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
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