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131 lines
3.3 KiB
131 lines
3.3 KiB
var _ = require('underscore');
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var Config = require('../Config');
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module.exports = function() {
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var originalSetSorting = this.prototype.setSorting;
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this.prototype.setSorting = function(sortKey, order, options) {
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var sortMapping = this._getSortMapping(sortKey);
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options = _.defaults({ sortValue : sortMapping.sortValue }, options || {});
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return originalSetSorting.call(this, sortMapping.sortKey, order, options);
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};
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this.prototype._getSortMappings = function() {
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var result = {};
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if (this.sortMappings) {
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_.each(this.sortMappings, function(values, key) {
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var item = {
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name : key,
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sortKey : values.sortKey || key,
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sortValue : values.sortValue
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};
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result[key] = item;
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result[item.sortKey] = item;
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});
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}
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return result;
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};
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this.prototype._getSortMapping = function(key) {
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var sortMappings = this._getSortMappings();
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return sortMappings[key] || {
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name : key,
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sortKey : key
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};
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};
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this.prototype._getSecondarySorting = function() {
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var sortKey = this.state.secondarySortKey;
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var sortOrder = this.state.secondarySortOrder || -1;
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if (!sortKey || sortKey === this.state.sortKey) {
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return null;
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}
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var sortMapping = this._getSortMapping(sortKey);
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if (!sortMapping.sortValue) {
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sortMapping.sortValue = function(model, attr) {
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return model.get(attr);
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};
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}
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return {
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key : sortKey,
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order : sortOrder,
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sortValue : sortMapping.sortValue
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};
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};
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this.prototype._makeComparator = function(sortKey, order, sortValue) {
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var state = this.state;
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var secondarySorting = this._getSecondarySorting();
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sortKey = sortKey || state.sortKey;
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order = order || state.order;
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if (!sortKey || !order) {
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return;
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}
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if (!sortValue) {
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sortValue = function(model, attr) {
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return model.get(attr);
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};
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}
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return function(left, right) {
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var l = sortValue(left, sortKey, order);
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var r = sortValue(right, sortKey, order);
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var t;
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if (order === 1) {
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t = l;
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l = r;
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r = t;
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}
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if (l === r) {
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if (secondarySorting) {
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var ls = secondarySorting.sortValue(left, secondarySorting.key, order);
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var rs = secondarySorting.sortValue(right, secondarySorting.key, order);
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var ts;
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if (secondarySorting.order === 1) {
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ts = ls;
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ls = rs;
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rs = ts;
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}
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if (ls === rs) {
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return 0;
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}
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if (ls < rs) {
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return -1;
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}
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return 1;
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}
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return 0;
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}
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else if (l < r) {
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return -1;
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}
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return 1;
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};
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};
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return this;
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};
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