Files
blomarchy/shell/Ui/BarWidget.qml
T

46 lines
1.9 KiB
QML

import QtQuick
import qs.Commons
// Base item every bar widget extends. Codifies the three properties the
// bar host injects into each widget slot:
// bar - the host Bar instance (foreground/background/run/etc).
// moduleName - widget's canonical id, used by the host registry to look
// up settings and to disambiguate inline IPC routes.
// settings - per-widget overrides read from shell.json's layout entry.
//
// Widgets are free to add their own properties, signals, and child items.
Item {
id: root
property QtObject bar: null
property string moduleName: ""
property var settings: ({})
// Bar geometry, lifted off the host. Widgets read these constantly to pick
// between horizontal/vertical layouts; defining them on the base keeps the
// `bar ? bar.x : fallback` ternary out of every widget body.
readonly property bool vertical: bar ? bar.vertical : false
readonly property int barSize: bar ? bar.barSize : Style.bar.sizeHorizontal
// Run `method` on every live instance of this widget. An IPC target only
// ever routes to one handler, but a bar surface exists per monitor, so the
// instance that owns the target relays the call to its peers — otherwise a
// refresh would land on a single screen and leave the others stale.
function broadcast(method) {
var items = bar && typeof bar.moduleWidgets === "function"
? bar.moduleWidgets(moduleName) : [root]
for (var i = 0; i < items.length; i++) {
if (items[i] && typeof items[i][method] === "function") items[i][method]()
}
}
// Read a single value from this widget's inline shell.json entry, with a
// fallback for missing/null values. Every widget that takes user-tunable
// settings needs this; defining it once on the base keeps the wiring
// consistent.
function setting(name, fallback) {
var value = settings ? settings[name] : undefined
return value === undefined || value === null ? fallback : value
}
}