CHIEFSOFT\ameye
100 lines
3.1 KiB
JavaScript
100 lines
3.1 KiB
JavaScript
YUI.add('loader-rollup', function (Y, NAME) {
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/**
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* Optional automatic rollup logic for reducing http connections
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* when not using a combo service.
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* @module loader
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* @submodule rollup
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*/
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/**
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* Look for rollup packages to determine if all of the modules a
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* rollup supersedes are required. If so, include the rollup to
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* help reduce the total number of connections required. Called
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* by calculate(). This is an optional feature, and requires the
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* appropriate submodule to function.
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* @method _rollup
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* @for Loader
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* @private
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*/
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Y.Loader.prototype._rollup = function() {
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var i, j, m, s, r = this.required, roll,
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info = this.moduleInfo, rolled, c, smod;
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// find and cache rollup modules
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if (this.dirty || !this.rollups) {
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this.rollups = {};
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for (i in info) {
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if (info.hasOwnProperty(i)) {
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m = this.getModule(i);
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// if (m && m.rollup && m.supersedes) {
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if (m && m.rollup) {
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this.rollups[i] = m;
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}
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}
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}
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}
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// make as many passes as needed to pick up rollup rollups
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for (;;) {
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rolled = false;
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// go through the rollup candidates
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for (i in this.rollups) {
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if (this.rollups.hasOwnProperty(i)) {
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// there can be only one, unless forced
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if (!r[i] && ((!this.loaded[i]) || this.forceMap[i])) {
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m = this.getModule(i);
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s = m.supersedes || [];
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roll = false;
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// @TODO remove continue
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if (!m.rollup) {
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continue;
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}
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c = 0;
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// check the threshold
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for (j = 0; j < s.length; j++) {
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smod = info[s[j]];
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// if the superseded module is loaded, we can't
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// load the rollup unless it has been forced.
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if (this.loaded[s[j]] && !this.forceMap[s[j]]) {
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roll = false;
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break;
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// increment the counter if this module is required.
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// if we are beyond the rollup threshold, we will
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// use the rollup module
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} else if (r[s[j]] && m.type === smod.type) {
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c++;
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roll = (c >= m.rollup);
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if (roll) {
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break;
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}
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}
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}
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if (roll) {
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// add the rollup
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r[i] = true;
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rolled = true;
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// expand the rollup's dependencies
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this.getRequires(m);
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}
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}
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}
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}
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// if we made it here w/o rolling up something, we are done
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if (!rolled) {
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break;
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}
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}
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};
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}, '3.18.1', {"requires": ["loader-base"]});
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