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marionette.domRefresh.js
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marionette.domRefresh.js
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// DOMRefresh
// ----------
//
// Monitor a view's state, and after it has been rendered and shown
// in the DOM, trigger a "dom:refresh" event every time it is
// re-rendered.
Marionette.MonitorDOMRefresh = (function(documentElement) {
// track when the view has been shown in the DOM,
// using a Marionette.Region (or by other means of triggering "show")
function handleShow(view) {
view._isShown = true;
triggerDOMRefresh(view);
}
// track when the view has been rendered
function handleRender(view) {
view._isRendered = true;
triggerDOMRefresh(view);
}
// Trigger the "dom:refresh" event and corresponding "onDomRefresh" method
function triggerDOMRefresh(view) {
if (view._isShown && view._isRendered && isInDOM(view)) {
if (_.isFunction(view.triggerMethod)) {
view.triggerMethod('dom:refresh');
}
}
}
function isInDOM(view) {
return documentElement.contains(view.el);
}
// Export public API
return function(view) {
view.listenTo(view, 'show', function() {
handleShow(view);
});
view.listenTo(view, 'render', function() {
handleRender(view);
});
};
})(document.documentElement);