87 lines
2.4 KiB
JavaScript
87 lines
2.4 KiB
JavaScript
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var Backbone = require('backbone');
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var checkAndBuildOpts = require('builder/helpers/required-opts');
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var STATES = require('./query-base-status');
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var CONTEXTS = {
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map: 'map',
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table: 'table'
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};
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var REQUIRED_OPTS = [
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'querySchemaModel',
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'queryGeometryModel',
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'queryRowsCollection'
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];
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var LayerContentModel = Backbone.Model.extend({
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defaults: {
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context: CONTEXTS.map, // map or table
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// This variable `state` is only used for the trigger change:state event.
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// It lives in the model so, as long as the model is recreated with the view every time,
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// this variable is not shared between views and can NOT use it to get the real state.
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state: STATES.initial
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},
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initialize: function (attrs, opts) {
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checkAndBuildOpts(opts, REQUIRED_OPTS, this);
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this._initBinds();
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},
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_initBinds: function () {
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this.listenTo(this._querySchemaModel, 'change:status', this._setState);
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this.listenTo(this._queryGeometryModel, 'change:status', this._setState);
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this.listenTo(this._queryRowsCollection.statusModel, 'change:status', this._setState);
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},
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_setState: function () {
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this.set('state', this._getState());
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},
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_getState: function () {
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if (this.isErrored()) return STATES.errored;
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if (this.isFetched()) return STATES.fetched;
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if (this.isFetching()) return STATES.fetching;
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if (this.isInitial()) return STATES.initial;
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return STATES.unavailable;
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},
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isErrored: function () {
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return this._querySchemaModel.hasRepeatedErrors() ||
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this._queryGeometryModel.hasRepeatedErrors() ||
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this._queryRowsCollection.hasRepeatedErrors();
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},
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isFetching: function () {
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return this._querySchemaModel.isFetching() ||
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this._queryGeometryModel.isFetching() ||
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this._queryRowsCollection.isFetching();
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},
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isFetched: function () {
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return this._querySchemaModel.isFetched() &&
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this._queryGeometryModel.isFetched() &&
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this._queryRowsCollection.isFetched();
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},
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isInFinalStatus: function () {
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return this._querySchemaModel.isInFinalStatus() &&
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this._queryGeometryModel.isInFinalStatus() &&
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this._queryRowsCollection.isInFinalStatus();
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},
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isInitial: function () {
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return this.get('state') === STATES.initial;
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},
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isDone: function () {
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return this.isFetched() || this.isErrored();
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}
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});
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LayerContentModel.CONTEXTS = CONTEXTS;
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LayerContentModel.STATES = STATES;
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module.exports = LayerContentModel;
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