centerLayout: Add some utilities to connect us up to CSS

This allows us to automatically adjust the "spacing" property of the
layout manager whenever the CSS changes.
This commit is contained in:
Jasper St. Pierre 2012-10-12 14:08:38 -04:00
parent ab60c628e7
commit 1d7c2b1c26

View File

@ -2,6 +2,39 @@
const Lang = imports.lang;
const Clutter = imports.gi.Clutter;
const St = imports.gi.St;
function connectLayoutManager(layoutManager, styleChanged) {
let widget, styleChangedId;
function _styleChanged() {
let themeNode = widget.get_theme_node();
styleChanged(themeNode, widget);
}
function actorChanged() {
if (widget) {
widget.disconnect(styleChangedId);
styleChangedId = 0;
}
let actor = layoutManager.get_actor();
if (actor && actor instanceof St.Widget) {
widget = actor;
styleChangedId = widget.connect('style-changed', _styleChanged);
_styleChanged();
}
}
layoutManager.connect('notify::actor', actorChanged);
return layoutManager;
}
function connectSpacing(layoutManager) {
return connectLayoutManager(layoutManager, function(themeNode, widget) {
layoutManager.spacing = themeNode.get_length('spacing');
});
}
const CenterLayout = new Lang.Class({
Name: 'CenterLayout',