Sha256: 3893d8efcf6752b8d536f7e795469bf2483ee49cb836a28283df44f8ec2e7a1f
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Size: 1.24 KB
Versions: 19
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Stored size: 1.24 KB
Contents
//= require ./adjacent_pages
pageflow.AdjacentPreparer = pageflow.Object.extend({
initialize: function(adjacentPages) {
this.adjacentPages = adjacentPages;
},
attach: function(events) {
this.listenTo(events, 'page:change', this.schedule);
},
schedule: function(page) {
clearTimeout(this.scheduleTimeout);
var prepare = _.bind(this.prepareAdjacent, this, page.element.page('instance'));
this.scheduleTimeout = setTimeout(prepare, page.prepareNextPageTimeout());
},
prepareAdjacent: function(page) {
var adjacentPages = this.adjacentPages.of(page);
var noLongerPreparedPages = _.difference(this.lastPreparedPages, adjacentPages, [page]);
var newAdjacentPages = _.difference(adjacentPages, this.lastPreparedPages);
_(noLongerPreparedPages).each(function(page) {
if (!page.isDestroyed) {
page.unprepare();
}
});
_(newAdjacentPages).each(function(adjacentPage) {
adjacentPage.prepare();
adjacentPage.preload();
});
this.lastPreparedPages = adjacentPages.concat([page]);
}
});
pageflow.AdjacentPreparer.create = function(pages, scrollNavigator) {
return new pageflow.AdjacentPreparer(
new pageflow.AdjacentPages(
pages,
scrollNavigator
)
);
};
Version data entries
19 entries across 19 versions & 1 rubygems