300 lines
12 KiB
JavaScript
300 lines
12 KiB
JavaScript
// vim: et:ts=4:sw=4:sts=4:ft=javascript
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pandora.Query = (function() {
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function constructFind(query) {
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return /*encodeURI(*/query.conditions.map(function(condition) {
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var ret;
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if (condition.conditions) {
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ret = '[' + constructFind(condition) + ']';
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} else {
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ret = condition.value !== ''
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? condition.key + (condition.key ? ':' : '')
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+ constructValue(condition.value, condition.operator)
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: null;
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}
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return ret;
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}).join(query.operator == '&' ? ',' : '|')/*)*/;
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}
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function constructValue(value, operator) {
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operator = operator.replace('=', '^$');
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if (operator.indexOf('$') > -1) {
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value = operator.substr(0, operator.length - 1) + value + '$';
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} else {
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value = operator + value;
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}
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return value;
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}
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function everyCondition(conditions, key, operator) {
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// if every condition has the given key and operator
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// (excluding conditions where all subconditions match)
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// returns true, otherwise false
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return Ox.every(conditions, function(condition) {
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return condition.key == key && condition.operator == operator;
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});
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}
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function getGroupsData(fullQuery) {
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// a group is selected if exactly one condition in an & query
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// or every condition in an | query
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// has the group id as key and "=" as operator
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return pandora.user.ui.groups.map(function(key) {
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var index = -1,
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query = Ox.clone(fullQuery, true),
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selected = [];
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if (query.operator == '|') {
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if (everyCondition(query.conditions, key, '=')) {
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index = Ox.range(query.conditions.length);
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selected = query.conditions.map(function(condition) {
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return condition.value;
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});
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}
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} else {
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index = oneCondition(query.conditions, key, '=');
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if (index > -1) {
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selected = query.conditions[index].conditions
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? query.conditions[index].conditions.map(function(condition) {
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return condition.value;
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})
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: [query.conditions[index].value];
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}
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}
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if (selected.length) {
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if (Ox.isArray(index)) {
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query = {conditions: [], operator: ''};
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} else {
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query.conditions.splice(index, 1);
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if (query.conditions.length == 1) {
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if (query.conditions[0].conditions) {
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// unwrap single remaining bracketed query
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query = {
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conditions: query.conditions[0].conditions,
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operator: query.conditions[0].operator
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}
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} else {
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query.operator = '';
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}
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}
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}
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}
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return {
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index: index,
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query: query,
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selected: selected
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};
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});
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}
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function parseFind(str) {
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// takes a find query string, returns useful information about the application's state
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// (selected lists, find input key/value (and index of the corresponding condition), query object)
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var conditions,
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index, indices,
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ret = {
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find: {index: -1, key: '', value: ''},
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groups: [], // {index, query, selected}
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list: '',
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query: {conditions: [], operator: ''}
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},
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subconditions = [];
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if (str.length) {
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// replace subconditions with placeholder,
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// so we can later split by main operator
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var counter = 0;
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Ox.forEach(str, function(c, i) {
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if (c == ']') {
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counter--;
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}
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if (counter >= 1) {
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subconditions[subconditions.length - 1] += c;
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}
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if (c == '[') {
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(++counter == 1) && subconditions.push('');
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}
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});
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subconditions.forEach(function(subcondition, i) {
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str = str.replace(subcondition, i);
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});
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if (str.indexOf(',') > -1) {
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ret.query.operator = '&';
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} else if (str.indexOf('|') > -1) {
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ret.query.operator = '|';
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}
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ret.query.conditions = (
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ret.query.operator == '' ? [str] : str.split(ret.query.operator == '&' ? ',' : '|')
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).map(function(condition, i) {
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var kv, ret;
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if (condition[0] == '[') {
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// re-insert subcondition
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ret = parseFind(subconditions[parseInt(Ox.sub(condition, 1, -1))]).query;
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} else {
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kv = ((condition.indexOf(':') > -1 ? '' : ':') + condition).split(':');
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ret = Ox.extend({key: kv[0]}, parseValue(kv[1]));
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}
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return ret;
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});
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// a list is selected if exactly one condition in an & query
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// has "list" as key and "" as operator
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if (ret.query.operator != '|') {
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index = oneCondition(ret.query.conditions, 'list', '');
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if (index > -1 && !ret.query.conditions[index].conditions) {
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ret.list = ret.query.conditions[index].value;
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}
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}
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// find is populated if exactly one condition in an & query
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// has a findKey as key and "" as operator
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// (and all other conditions are either list or groups)
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// or if all conditions in an | query have the same group id as key
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if (ret.query.operator == '|') {
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ret.find = {index: -1, key: 'advanced', value: ''};
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Ox.map(pandora.user.ui.groups, function(key) {
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if (everyCondition(ret.query.conditions, key, '=')) {
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ret.find.key = '';
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return false;
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}
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});
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} else {
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// number of conditions that are not list or groups
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conditions = ret.query.conditions.length
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- (ret.list != '')
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- ret.groups.filter(function(group) {
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return group.index > -1;
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}).length;
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// indices of non-advanced find queries
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indices = Ox.map(pandora.site.findKeys, function(findKey) {
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var key = findKey.id == 'all' ? '' : findKey.id,
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index = oneCondition(ret.query.conditions, key, '');
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return index > -1 ? index : null;
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});
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if (conditions > 0 || indices.length > 0) {
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ret.find = (
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conditions == 1 && indices.length == 1
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&& !ret.query.conditions[indices[0]].conditions
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) ? {
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index: indices[0],
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key: ret.query.conditions[indices[0]].key,
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value: ret.query.conditions[indices[0]].value
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} : {index: -1, key: 'advanced', value: ''}
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}
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}
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}
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ret.groups = getGroupsData(ret.query);
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return ret;
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}
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function oneCondition(conditions, key, operator) {
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// if exactly one condition has the given key and operator
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// (including conditions where all subconditions match)
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// returns the corresponding index, otherwise returns -1
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var indices = Ox.map(conditions, function(condition, i) {
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return (
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condition.conditions
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? everyCondition(condition.conditions, key, operator)
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: condition.key == key && condition.operator == operator
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) ? i : null;
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});
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return indices.length == 1 ? indices[0] : -1;
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}
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function parseValue(str) {
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var value = {
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value: decodeURI(str),
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operator: ''
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};
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if (value.value[0] == '!') {
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value.operator = '!';
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value.value = value.value.substr(1);
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}
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if ('^<>'.indexOf(value.value[0]) > -1) {
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value.operator += value.value[0];
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value.value = value.value.substr(1);
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}
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if (value.value.substr(-1) == '$') {
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value.operator += '$';
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value.value = value.value.substr(0, value.value.length - 1);
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}
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value.operator = value.operator.replace('^$', '=');
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return value;
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}
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return {
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fromString: function(str) {
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var data
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query = Ox.unserialize(str.substr(1)),
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sort = []
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if ('find' in query) {
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data = parseFind(query.find || '');
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Ox.print(Ox.repeat('-', 120));
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Ox.print('STATE', data);
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Ox.print(Ox.repeat('-', 120));
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!pandora.user.ui.lists[data.list] && pandora.UI.set(
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['lists', data.list].join('|'), pandora.site.user.ui.lists['']
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);
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pandora.UI.set({list: data.list});
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pandora.user.ui.find = data.find;
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pandora.user.ui.groupsData = data.groups;
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Ox.print("PUUGD", pandora.user.ui.groupsData);
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pandora.user.ui.query = data.query;
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}
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if ('sort' in query) {
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sort = query.sort.split(',');
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pandora.UI.set(['lists', pandora.user.ui.list, 'sort'].join('|'), query.sort.split(',').map(function(v) {
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var hasOperator = '+-'.indexOf(v[0]) > -1,
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key = hasOperator ? v.substr(1) : v,
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operator = hasOperator ? v[0]/*.replace('+', '')*/ : pandora.getSortOperator(key);
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return {
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key: key,
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operator: operator
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};
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}));
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}
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if ('view' in query) {
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pandora.UI.set(['lists', pandora.user.ui.list, 'listView'].join('|'), query.view);
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}
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},
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/*
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toObject: function(groupId) {
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//Ox.print('tO', pandora.user.ui.findQuery.conditions)
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// the inner $.merge() creates a clone
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var conditions = $.merge(
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$.merge([], pandora.user.ui.listQuery.conditions),
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pandora.user.ui.findQuery.conditions
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),
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operator;
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$.merge(conditions, pandora.user.queryGroups ? $.map(pandora.user.queryGroups, function(v, i) {
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if (v.id != groupId && v.query.conditions.length) {
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return v.query.conditions.length == 1 ?
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v.query.conditions : v.query;
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}
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}) : []);
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operator = conditions.length < 2 ? '' : ','; // fixme: should be &
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//Ox.print('>>', groupId, pandora.user.ui.find, conditions);
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return {
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conditions: conditions,
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operator: operator
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};
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},
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*/
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toString: function() {
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//Ox.print('tS', pandora.user.ui.find)
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var sort = pandora.user.ui.lists[pandora.user.ui.list].sort[0],
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key = sort.key,
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operator = sort.operator;
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return '?' + Ox.serialize({
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find: constructFind(pandora.user.ui.query),
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sort: (operator == pandora.getSortOperator(key) ? '' : operator) + key,
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view: pandora.user.ui.lists[pandora.user.ui.list].listView
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});
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},
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updateGroups: function() {
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pandora.user.ui.groupsData = getGroupsData(pandora.user.ui.query);
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}
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};
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})();
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