settings: qtmaildir's config, in four Mail pages

qtmaildir is configured through qtmaildir.conf alone, which it reads at
startup and never writes. Four settings pages under a new Mail group
edit it: Mail ([general], [sync], [completion]), Compose, Accounts (a
card per account, add and remove) and Tags & shortcuts ([tagcolors] and
[keys]). Fields save on Enter and unset when emptied, with qtmaildir's
defaults as placeholders and numbers range-checked; the pages say when
qtmaildir is running and a change waits for its restart.

Ini.js edits the file line by line so its comments survive. Headers are
only whole [name] lines: a section is never cut at the next "[", since
values such as [Gmail]/Bozze hold brackets, the trap AGENTS.md records.

The shortcut actions are copied from qtmaildir's KeyMap::knownActions()
rather than exported by it, since a CLI flag there would have meant
translations and a changelog entry; the field also takes free text, and
the copy is marked as a ponytail ceiling.

The settings sidebar now clips, which a list long enough to scroll
showed it did not: entries drew over the search box.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 104 insertions, 0 deletions

diff --git a/desktop/modules/qtmaildir/Setting.qml b/desktop/modules/qtmaildir/Setting.qml
new file mode 100644
index 0000000..59e9c1b
--- /dev/null
+++ b/desktop/modules/qtmaildir/Setting.qml
@@ -0,0 +1,104 @@
+// Copyright (C) 2026 Danilo M. <danix@danix.xyz>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License version 2 as
+// published by the Free Software Foundation.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+import QtQuick
+import "../.."
+
+// One labelled key of qtmaildir.conf: a text field that saves on Enter.
+// Emptied, the key is unset and qtmaildir uses its default, which the
+// placeholder names. kind "int" or "float" checks the number and its range
+// before writing; a refused value shows why under the row.
+Column {
+    id: s
+    property string section
+    property string key
+    property string label
+    property string placeholder: ""
+    property string hint: ""
+    property string kind: "text"
+    property real min: -Infinity
+    property real max: Infinity
+    // What a search hit scrolls to.
+    objectName: section + "/" + key
+    width: parent ? parent.width : 0
+    spacing: 2
+
+    readonly property string value: Qtm.get(s.section, s.key) ?? ""
+    property string problem: ""
+
+    function commit(t) {
+        t = t.trim();
+        if (t === "") { s.problem = ""; Qtm.set(s.section, s.key, null); return; }
+        if (s.kind !== "text") {
+            const n = Number(t);
+            if (isNaN(n) || (s.kind === "int" && !Number.isInteger(n)) || n < s.min || n > s.max) {
+                s.problem = s.kind === "int" ? `a whole number from ${s.min} to ${s.max}`
+                                             : `a number from ${s.min} to ${s.max}`;
+                return;
+            }
+        }
+        s.problem = "";
+        Qtm.set(s.section, s.key, t);
+    }
+
+    Item {
+        width: s.width
+        height: 34
+        Text {
+            id: lbl
+            anchors { left: parent.left; verticalCenter: parent.verticalCenter }
+            width: 160
+            elide: Text.ElideRight
+            text: s.label
+            color: Theme.subtext
+            font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 3 }
+        }
+        Rectangle {
+            anchors { left: lbl.right; leftMargin: 8; right: parent.right; top: parent.top; bottom: parent.bottom }
+            radius: 8
+            color: Theme.surface
+            TextInput {
+                id: ti
+                anchors { fill: parent; leftMargin: 10; rightMargin: 10 }
+                verticalAlignment: TextInput.AlignVCenter
+                clip: true
+                selectByMouse: true
+                color: Theme.text
+                font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 2 }
+                text: s.value
+                onAccepted: if (text !== s.value) s.commit(text)
+                Keys.onEscapePressed: event => {
+                    if (text !== s.value) text = s.value;
+                    else event.accepted = false;
+                }
+                Text {
+                    anchors.verticalCenter: parent.verticalCenter
+                    width: parent.width
+                    elide: Text.ElideRight
+                    visible: parent.text === ""
+                    text: s.placeholder
+                    color: Theme.overlay
+                    font: parent.font
+                }
+            }
+        }
+    }
+
+    Text {
+        x: 168
+        width: s.width - x
+        visible: s.problem !== "" || s.hint !== ""
+        wrapMode: Text.Wrap
+        text: s.problem !== "" ? "Must be " + s.problem + "." : s.hint
+        color: s.problem !== "" ? Theme.red : Theme.overlay
+        font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 5 }
+    }
+}