forked from verdnatura/hedera-web
134 lines
2.2 KiB
JavaScript
134 lines
2.2 KiB
JavaScript
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var Lot = require ('./lot');
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var LotIface = require ('./lot-iface');
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var Spec = require ('./spec');
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var Value = require ('./value');
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module.exports = new Class
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({
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Extends: Lot
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,Tag: 'vn-lot-query'
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,Properties:
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{
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fields:
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{
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type: Array
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,set: function (x)
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{
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this._fields = x;
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this._onSourceChange ();
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}
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,get: function ()
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{
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return this._fields;
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}
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},
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source:
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{
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type: LotIface
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,set: function (x)
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{
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this.link ({_source: x}, {change: this._onSourceChange});
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this._onSourceChange ();
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}
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,get: function ()
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{
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return this._source;
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}
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}
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}
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,initialize: function (props)
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{
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Object.assign (this, {
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_fields: null,
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_source: null,
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_lockSource: false,
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_specs: {}
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});
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this.parent (props);
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}
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,appendChild: function (child)
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{
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if (!(child instanceof Spec))
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throw new Error ('VnLotQuery: Child must be a Vn.Spec instance');
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this._specs[child.name] = child;
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}
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,_onSourceChange: function ()
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{
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if (this._lockSource)
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return;
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var params = this._source ? this._source.params : {};
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var myParams = {};
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for (var key in this._specs)
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myParams[key] = Value.simpleClone (params[key]);
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this.assign (myParams);
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}
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,assign: function (params)
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{
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params = this.transformParams (params);
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var diff = Value.partialDiff (this._params, params);
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if (diff)
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{
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Object.assign (this._params, diff);
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if (this.source)
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{
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this._lockSource = true;
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this.source.assign (diff);
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this._lockSource = false;
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}
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this._paramsChanged (diff);
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this.changed (diff);
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}
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}
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,setAll: function (params)
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{
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this.assign (params);
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}
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,transformParams: function (params)
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{
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var newParams = {};
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for (var key in this._specs)
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{
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var spec = this._specs[key];
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if (params[key])
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newParams[key] = cast (params[key], spec.type);
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}
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return Object.assign (params, newParams);
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}
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});
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function cast (value, type)
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{
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switch (type)
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{
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case Boolean:
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return (/^(true|1)$/i).test (value);
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case Number:
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return 0 + new Number (value);
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case Date:
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var date = new Date (value);
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date.setHours (0, 0, 0, 0);
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return date;
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default:
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if (type instanceof Object)
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return JSON.parse (value);
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else
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return value;
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}
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}
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