v0.2.18

CHANGELOG.md

@@ -1,5 +1,11 @@
 # RustBox changelog
 
+### 0.2.19
+
+- Improved vertical space management in the HTML message reader: the sandboxed message iframe now expands to the actual space remaining below the reader toolbar, message header and auxiliary bars instead of stopping at a fixed `68vh`.
+- Recalculate the HTML message viewport when the reader, header, attachments, security bars, window size or fullscreen state changes, avoiding an unnecessary short inner scrollbar while preserving the existing iframe sandbox.
+- Bumped the application/source release to 0.2.19.
+
 ### 0.2.18
 
 - Fixed new-message sender selection so the composer prefers the configured default identity, then the identity matching the active account address, then the first available identity; the visible From field now shows the active account address instead of an ambiguous `Account default` label when no identity is selected.

Cargo.lock

@@ -3506,7 +3506,7 @@ dependencies = [
 
 [[package]]
 name = "rustbox"
-version = "0.2.18"
+version = "0.2.19"
 dependencies = [
  "aes-gcm",
  "async-imap",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rustbox"
-version = "0.2.18"
+version = "0.2.19"
 edition = "2024"
 rust-version = "1.99.1"
 default-run = "rustbox"

NOTICE.md

@@ -1,6 +1,6 @@
 # RustBox attribution / notice
 
-RustBox 0.2.18 is derived from the Oxi webmail project:
+RustBox 0.2.19 is derived from the Oxi webmail project:
 
 - Upstream: `c0h1b4/oxi`
 - Base snapshot: `7f1507c486b78cf33e54beb701dd460d3bd2bd5d`

README.md

@@ -1,4 +1,4 @@
-# RustBox 0.2.18
+# RustBox 0.2.19
 
 RustBox is a webmail derived from `c0h1b4/oxi`. The consumed Oxi revision is recorded in `UPSTREAM_BASE`.
 

RELEASE-MANIFEST.txt

@@ -1,6 +1,7 @@
-RustBox 0.2.18 release manifest
+RustBox 0.2.19 release manifest
 
-0.2.18 release changes and retained feature set:
+0.2.19 release changes and retained feature set:
+- expands sandboxed HTML message previews to the real remaining reader height and keeps that height synchronized across layout/fullscreen changes
 - adds equal-height text/HTML signature fields and a dedicated raw-HTML + visual signature editor with image insertion
 - keeps synchronization activity visible during page/progressive/all mailbox loads and individual message retrieval
 - adds Shift-click contiguous message selection and direct first/last pagination controls
@@ -70,14 +71,14 @@ Docker examples:
 
 Operations/docs:
 - standalone `scripts/migrate_roundcube.py` imports Roundcube contacts/identities using RustBox config.toml and supports SQLite/MySQL/PostgreSQL targets
-- README.md documents 0.2.18 configuration
+- README.md documents 0.2.19 configuration
 - docker/README.md documents Compose variants
 - docs/STORAGE_SEARCH_OPERATIONS.md documents failure modes, shared-storage requirements and migration behavior
 - TODO.md leaves live SILO/MinIO/AWS/Ceph and real multi-node acceptance validation explicitly pending
 
 Build/release metadata:
 - `scripts/package-release.sh` runs the full Rust release gate before creating ZIP/SHA256 artifacts
-- Cargo.toml version = 0.2.18
+- Cargo.toml version = 0.2.19
 - rust-toolchain.toml pins Rust 1.99.1
 - Cargo.lock is retained for reproducible application builds; the release gate generates it only when missing
 - CI and scripts/build-release.sh use the retained Cargo.lock (generating it only if missing), then run locked tests/Clippy/release build

RELEASE-VALIDATION.txt

@@ -1,6 +1,7 @@
-RustBox 0.2.18 - final source validation
+RustBox 0.2.19 - final source validation
 
-0.2.18 scope:
+0.2.19 scope:
+- HTML message reader iframe height follows the actual remaining reader viewport rather than a fixed 68vh, with resize/fullscreen recalculation
 - multi-account sessions expose a top-bar quick switcher, per-browser combined notification selection, per-account notification preferences and the administrator `multi_account_enabled` feature gate
 - plain-text and HTML signature controls have aligned heights; raw HTML can be pasted into a modal, previewed/edited visually and extended with inline images
 - synchronization spinner covers mailbox pagination, progressive/full-folder loading and message/draft body retrieval
@@ -32,15 +33,15 @@ RustBox 0.2.18 - final source validation
 - Composing shows only compact attachment/message size-limit values on one line
 - 0.2.9 realtime notification gating, browser shortcut preservation and 300-message defaults remain intact
 - V047-V050 are consolidated into compatibility baseline V050; V051 migrates existing tenants with adaptive HTML-mail colors and mailbox loading mode; V052 is next
-- version metadata remains at 0.2.18
+- version metadata identifies 0.2.19
 
 Completed in this environment:
-- offline release validator: scripts/validate-release-static.py (413/413 checks passed)
+- offline release validator: scripts/validate-release-static.py (420/420 checks passed)
 - browser JavaScript assembled in manifest order passes `node --check`
 - all JSON files parse successfully
 - Python helper scripts compile successfully
 - shell scripts pass `bash -n`
-- release metadata consistently identifies 0.2.18
+- release metadata consistently identifies 0.2.19
 - V050 baseline consolidation plus the V051 adaptive-colors/mailbox-loading migration are validated offline
 
 

docs/IMPLEMENTATION_STATUS.md

@@ -1,10 +1,11 @@
-# RustBox 0.2.18 - implementation status
+# RustBox 0.2.19 - implementation status
 
 - Draft saves are realtime-silent: Drafts folder/list updates continue, but saving a draft does not surface as a new-mail notification.
-This file tracks the `0.2.18` source snapshot. Storage/search scope and outstanding acceptance work are tracked in `TODO.md`. A feature is only listed as implemented when working code exists in this source tree; partial items are called out explicitly.
+This file tracks the `0.2.19` source snapshot. Storage/search scope and outstanding acceptance work are tracked in `TODO.md`. A feature is only listed as implemented when working code exists in this source tree; partial items are called out explicitly.
 
-## 0.2.18 browser mail UX
+## 0.2.19 browser mail UX
 
+- HTML message previews use the full remaining vertical reader area and recompute their iframe height as reader chrome/layout changes.
 - Signature management uses equal-height text and HTML fields and includes a raw-HTML modal with a sanitized visual editor and inline image import.
 - Mail loading activity is represented by the app-bar spinner for pagination, progressive/full-folder retrieval and individual message/draft loading.
 - Shift-click selects a contiguous range in the visible message list, and pagination includes direct first/last page navigation.

scripts/validate-release-static.py

@@ -152,6 +152,7 @@ require('suppressRealtimeNotificationsForFolder(notificationDestination)' in mai
 require('realtimeNotificationSuppressedMessages: new Map()' in bootstrap_js and 'suppressRealtimeNotificationForMessage' in realtime_js and 'consumeRealtimeMessageNotificationSuppression' in realtime_js and 'suppressIntentionalMoveNotification' in mail_actions_js, "intentional message moves suppress the matching realtime new-mail event by destination UID")
 require('finishAuthenticatedStartup({ showLoginToast = false } = {})' in auth_js and 'finishAuthenticatedStartup({ showLoginToast: true })' in auth_js and bindings_js.count('finishAuthenticatedStartup();') >= 1, "login success toast is limited to real login, not refresh/session restoration")
 require('<meta charset="utf-8">${csp}' in reader_js, "message preview srcdoc explicitly declares UTF-8")
+require('function resizeReaderMessageFrame()' in reader_js and 'new ResizeObserver(scheduleReaderMessageFrameResize)' in reader_js and '--reader-message-frame-height' in mail_css and 'min-height: 68vh' not in mail_css, "HTML message preview uses the full remaining reader height instead of fixed 68vh")
 require('function sanitizeMessagePreviewHtml(html)' in bootstrap_js and 'if (!node.hasAttribute("target")) node.setAttribute("target", "_blank");' in bootstrap_js and '!["_self", "_parent", "_top"].includes(target)' in bootstrap_js and 'rel.add("noopener");' in bootstrap_js and 'rel.add("noreferrer");' in bootstrap_js and 'sanitizeMessagePreviewHtml(detail.html)' in reader_js, "message preview links default to safe new-window navigation without overriding explicit targets")
 require('sourceDoc.head.querySelectorAll("style")' in bootstrap_js and 'messagePreviewBodyPresentation' in reader_js and 'iframe.style.background = previewTheme.surface;' in reader_js and 'background: var(--reader-bg);' in mail_css, "adaptive HTML-mail preview preserves head CSS/body presentation and never exposes a hard-coded white iframe canvas")
 require('attachmentContentUrl(folder, uid, attachment)' in reader_js and 'frame.src = attachmentContentUrl(folder, uid, attachment);' in reader_js and 'URL.createObjectURL(blob)' in reader_js, "PDF preview uses authenticated inline URL while other attachment previews retain blob handling")

src/web/css/30-mail.css

@@ -593,7 +593,8 @@
 .message-body iframe {
   display: block;
   width: 100%;
-  min-height: 68vh;
+  height: var(--reader-message-frame-height, 260px);
+  min-height: 260px;
   border: 0;
   background: var(--reader-bg);
 }

src/web/js/40-messages-reader.js

@@ -503,6 +503,7 @@ function setReaderFullscreen(enabled, options = {}) {
     }
     restoreReaderScroll();
   }
+  scheduleReaderMessageFrameResize();
 }
 
 function enterReaderFullscreen() {
@@ -1164,10 +1165,62 @@ function adaptMessagePreviewColors(html, detail, body) {
   return { html: doc.body.innerHTML, targetTheme, surface: adaptiveEmailRgbCss(messageSurface), text: adaptiveEmailRgbCss(messageText) };
 }
 
+let readerMessageFrameObserver = null;
+let readerMessageFrameResizeRaf = 0;
+let readerMessageFrameWindowResizeBound = false;
+
+function resizeReaderMessageFrame() {
+  readerMessageFrameResizeRaf = 0;
+  const reader = $("#reader-content");
+  const body = $("#message-body");
+  const iframe = body?.querySelector(":scope > iframe");
+  if (!reader || !body || !iframe || reader.classList.contains("hidden")) return;
+
+  let occupiedHeight = 0;
+  for (const child of reader.children) {
+    if (child === body) break;
+    const style = getComputedStyle(child);
+    if (style.display === "none" || style.position === "absolute" || style.position === "fixed") continue;
+    const rect = child.getBoundingClientRect();
+    occupiedHeight += rect.height;
+    occupiedHeight += Number.parseFloat(style.marginTop) || 0;
+    occupiedHeight += Number.parseFloat(style.marginBottom) || 0;
+  }
+
+  const availableHeight = Math.max(260, Math.floor(reader.clientHeight - occupiedHeight));
+  body.style.setProperty("--reader-message-frame-height", `${availableHeight}px`);
+}
+
+function scheduleReaderMessageFrameResize() {
+  if (readerMessageFrameResizeRaf) cancelAnimationFrame(readerMessageFrameResizeRaf);
+  readerMessageFrameResizeRaf = requestAnimationFrame(resizeReaderMessageFrame);
+}
+
+function observeReaderMessageFrameLayout() {
+  const reader = $("#reader-content");
+  const body = $("#message-body");
+  if (!reader || !body) return;
+
+  if (typeof ResizeObserver === "function") {
+    if (!readerMessageFrameObserver) readerMessageFrameObserver = new ResizeObserver(scheduleReaderMessageFrameResize);
+    readerMessageFrameObserver.disconnect();
+    readerMessageFrameObserver.observe(reader);
+    for (const child of reader.children) {
+      if (child !== body) readerMessageFrameObserver.observe(child);
+    }
+  }
+
+  if (!readerMessageFrameWindowResizeBound) {
+    window.addEventListener("resize", scheduleReaderMessageFrameResize, { passive: true });
+    readerMessageFrameWindowResizeBound = true;
+  }
+}
+
 function renderMessageBody(detail, forceRemote = false) {
   const body = $("#message-body");
   const remoteBar = $("#remote-image-bar");
   body.replaceChildren();
+  body.style.removeProperty("--reader-message-frame-height");
   remoteBar.classList.add("hidden");
   const preferredBody = state.mailPrefs.preferred_body || "auto";
   if (preferredBody === "text" || !detail?.html) {
@@ -1208,6 +1261,8 @@ function renderMessageBody(detail, forceRemote = false) {
   ].filter(Boolean).join(" ");
   iframe.srcdoc = `<!doctype html><html><head><meta charset="utf-8">${csp}<meta name="color-scheme" content="${previewTheme.targetTheme}"><style>${previewStyle}</style></head><body${bodyAttributes ? ` ${bodyAttributes}` : ""}>${safeHtml}</body></html>`;
   body.append(iframe);
+  observeReaderMessageFrameLayout();
+  resizeReaderMessageFrame();
 }
 
 async function downloadAttachment(folder, uid, attachment) {