54 lines
1.5 KiB
JavaScript
54 lines
1.5 KiB
JavaScript
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(function() {
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'use strict';
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ElmRuntime.Display = { FULLSCREEN: 0, COMPONENT: 1, NONE: 2 };
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ElmRuntime.counter = 0;
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ElmRuntime.guid = function() { return ElmRuntime.counter++; }
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ElmRuntime.use = function(M) {
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if (typeof M === 'function') M = M();
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return M;
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};
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function isAlive(input) {
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if (!('defaultNumberOfKids' in input)) return true;
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var len = input.kids.length;
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if (len === 0) return false;
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if (len > input.defaultNumberOfKids) return true;
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var alive = false;
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for (var i = len; i--; ) {
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alive = alive || isAlive(input.kids[i]);
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}
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return alive;
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}
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ElmRuntime.filterDeadInputs = function(inputs) {
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var temp = [];
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for (var i = inputs.length; i--; ) {
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if (isAlive(inputs[i])) temp.push(inputs[i]);
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}
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return temp;
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};
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// define the draw function
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var vendors = ['ms', 'moz', 'webkit', 'o'];
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var win = typeof window !== 'undefined' ? window : {};
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for (var i = 0; i < vendors.length && !win.requestAnimationFrame; ++i) {
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win.requestAnimationFrame = win[vendors[i]+'RequestAnimationFrame'];
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win.cancelAnimationFrame = win[vendors[i]+'CancelAnimationFrame'] ||
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win[vendors[i]+'CancelRequestAnimationFrame'];
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}
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if (win.requestAnimationFrame && win.cancelAnimationFrame) {
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var previous = 0;
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ElmRuntime.draw = function(callback) {
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win.cancelAnimationFrame(previous);
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previous = win.requestAnimationFrame(callback);
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};
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} else {
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ElmRuntime.draw = function(callback) { callback(); };
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}
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}());
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