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index.js
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index.js
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var m = require('mithril');
var _ = require('lodash');
var $ = require('jquery');
var getVDOM = function (args) {
return m.apply(m, args);
};
var getArray = function (arrayLike) {
var args = [];
for (var i = 1, length = arrayLike.length; i < length; i++) {
args[i - 1] = arrayLike[i];
}
return args;
}
var events = 'webkitAnimationEnd mozAnimationEnd MSAnimationEnd oanimationend animationend webkitTransitionEnd otransitionend oTransitionEnd msTransitionEnd transitionend';
module.exports = {
// fx.mount(node, attrs, data)
mount: function () {
var vdom = getVDOM(arguments);
var animate = function (el, initialized, ctx) {
var dom = $(el);
if (initialized) return;
dom.addClass('fx mount')
.one(events, function () {dom.removeClass('fx mount');});
};
// attach animate to attrs.config
var originalConfig = vdom.attrs.config;
vdom.attrs.config = function (el, init, ctx, dom) {
if (originalConfig) originalConfig.call(vdom, el, init, ctx, dom);
animate.call(vdom, el, init, ctx, dom);
};
return m(vdom.tag, vdom.attrs, vdom.children);
},
// fx.unmount(el)
unmount: function (el) {
if (!el) throw Error("Please pass an element.");
var dom = $(el);
m.startComputation();
dom.addClass('fx unmount').one(events,
function () {
dom.removeClass('fx unmount');
m.endComputation();
});
},
// fx.showHide(boolean, node, attrs, data)
showHide: function () {
if (!_.isBoolean(arguments[0])) throw "The first argument to fx.showHide must be a boolean value.";
var value = arguments[0];
var vdom = getVDOM(getArray(arguments));
var animate = function (el, initialized, ctx) {
var dom = $(el);
if(!initialized) {
if (value) {
dom.css('display', 'block');
}
else {
dom.css('display', 'none');
}
ctx.state = value;
}
if (ctx.state === value) return
if (value) {
var className = 'fx show';
dom.css('display', 'block');
dom.addClass(className)
.one(events, function () {dom.removeClass(className)});
}
else {
var className = 'fx hide';
dom.addClass(className)
.one(events, function () {
dom.removeClass(className);
dom.css('display', 'none');
});
}
ctx.state = value;
};
var originalConfig = vdom.attrs.config;
vdom.attrs.config = function (el, init, ctx, dom) {
if (originalConfig) originalConfig.call(vdom, el, init, ctx, dom);
animate.call(vdom, el, init, ctx, dom);
};
return m(vdom.tag, vdom.attrs, vdom.children);
},
// fx.toggle(boolean, node, attrs, data)
toggle: function () {
if (!_.isBoolean(arguments[0])) throw "The first argument to fx.toggle must be a boolean value.";
var value = arguments[0];
var vdom = getVDOM(getArray(arguments));
var trueClass = 'fx true';
var falseClass = 'fx false';
var animate = function (el, initialized, ctx) {
var dom = $(el);
if (ctx.state === value) return;
if (value) {
dom.removeClass(falseClass);
dom.addClass(trueClass);
}
else {
dom.removeClass(trueClass);
dom.addClass(falseClass);
}
ctx.state = value;
};
var originalConfig = vdom.attrs.config;
vdom.attrs.config = function (el, init, ctx, dom) {
if (originalConfig) originalConfig.call(vdom, el, init, ctx, dom);
animate.call(vdom, el, init, ctx, dom);
};
return m(vdom.tag, vdom.attrs, vdom.children);
},
// fx.map(array, callback, delay)
map: function () {
var parent;
if (!_.isArray(arguments[0])) throw "The first argument to fx.map() must be an array.";
if (!_.isFunction(arguments[1])) throw "The second argument to fx.map() must be a function.";
var data = arguments[0], callback = arguments[1], delay = arguments[2] || 0;
var elements = _.map(data, callback);
var animate = function (index, data, config) {
return function (el, initialized, ctx) {
var dom = $(el);
var addClass = 'fx mount';
var changeClass = 'fx change';
var moveHigh = 'fx move high';
var moveLow = 'fx move low';
// execute original config
if (config) config(el, initialized, ctx);
// for addition of element
if(!initialized) {
parent = parent || dom.parent();
freshCount = $.data(parent, 'freshCount') || 0;
$.data(parent, 'freshCount', freshCount + 1);
dom.css('animation-delay', freshCount * delay + "s");
dom.addClass(addClass)
.one(events, function () {
dom.css('animation-delay', "");
dom.removeClass(addClass);
});
}
// for element move
if ((ctx.index || ctx.index === 0) && ctx.index < index) {
dom.addClass(moveLow)
.one(events, function () {dom.removeClass(moveLow);});
}
else if ((ctx.index || ctx.index === 0) && ctx.index > index) {
dom.addClass(moveHigh)
.one(events, function () {dom.removeClass(moveHigh);});
}
// if change in data
if (ctx.data && !_.isEqual(ctx.data, data)) {
dom.addClass(changeClass)
.one(events, function () {dom.removeClass(changeClass);});
}
// save state
ctx.data = _.clone(data, true);
ctx.index = index;
};
};
// attach animation to elements
return _.map(_.range(data.length), function (index) {
var delement = elements[index], ddata = data[index];
var originalConfig = delement.attrs.config;
delement.attrs.key = ddata.id || ddata;
delement.attrs.config = animate(index, ddata, originalConfig);
return delement;
});
},
change: function () {
var value = arguments[0];
var vdom = getVDOM(getArray(arguments));
var animate = function (el, initialized, ctx) {
if (ctx.state === value) return;
var dom = $(el);
var changeClass = 'fx change';
if (ctx.state && !_.isEqual(ctx.data, value)) {
dom.addClass(changeClass)
.one(events, function () {dom.removeClass(changeClass);});
}
ctx.state = _.clone(value, true);
};
var originalConfig = vdom.attrs.config;
vdom.attrs.config = function (el, init, ctx, dom) {
if (originalConfig) originalConfig.call(vdom, el, init, ctx, dom);
animate.call(vdom, el, init, ctx, dom);
};
return m(vdom.tag, vdom.attrs, vdom.children);
}
};