function BrowsingEngine(div, facetConfigs) {
this._div = div;
this._facets = [];
this._initializeUI();
if (facetConfigs.length > 0) {
for (var i = 0; i < facetConfigs.length; i++) {
var facetConfig = facetConfigs[i];
var type = facetConfig.c.type;
var elmt = this._createFacetContainer();
var facet;
switch (type) {
case "range":
facet = RangeFacet.reconstruct(elmt, facetConfig);
break;
case "scatterplot":
facet = ScatterplotFacet.reconstruct(elmt, facetConfig);
break;
case "text":
facet = TextSearchFacet.reconstruct(elmt, facetConfig);
break;
default:
facet = ListFacet.reconstruct(elmt, facetConfig);
}
this._facets.push({ elmt: elmt, facet: facet });
}
this.update();
}
}
BrowsingEngine.prototype.resize = function() {
};
BrowsingEngine.prototype.getFacetUIStates = function() {
var f = [];
for (var i = 0; i < this._facets.length; i++) {
var facet = this._facets[i];
f.push(facet.facet.getUIState());
}
return f;
};
BrowsingEngine.prototype._initializeUI = function() {
var self = this;
this._div.html(
'
' +
''
);
this._elmts = DOM.bind(this._div);
this._elmts.facets.sortable({
handle: '.facet-title',
update: function(event, ui) {
self._updateFacetOrder();
}
});
this._elmts.facets.disableSelection();
this._elmts.includeDependentRowsCheck.change(function() {
Gridworks.update({ engineChanged: true });
});
this._elmts.refreshLink.click(function() { self.update(); });
this._elmts.resetLink.click(function() { self.reset(); });
this._elmts.removeLink.click(function() { self.remove(); });
};
BrowsingEngine.prototype._updateFacetOrder = function() {
var elmts = this._elmts.facets.children();
var newFacets = [];
for (var e = 0; e < elmts.length; e++) {
var elmt = elmts[e];
for (var f = 0; f < this._facets.length; f++) {
if (elmt === this._facets[f].elmt[0]) {
newFacets.push(this._facets[f]);
break;
}
}
}
this._facets = newFacets;
};
BrowsingEngine.prototype.getJSON = function(keepUnrestrictedFacets, except) {
var a = {
facets: [],
includeDependent: this._elmts.includeDependentRowsCheck[0].checked
};
for (var i = 0; i < this._facets.length; i++) {
var facet = this._facets[i];
if ((keepUnrestrictedFacets || facet.facet.hasSelection()) && (facet.facet !== except)) {
a.facets.push(facet.facet.getJSON());
}
}
return a;
};
BrowsingEngine.prototype.addFacet = function(type, config, options) {
var elmt = this._createFacetContainer();
var facet;
switch (type) {
case "range":
facet = new RangeFacet(elmt, config, options);
break;
case "scatterplot":
facet = new ScatterplotFacet(elmt, config, options);
break;
case "text":
facet = new TextSearchFacet(elmt, config, options);
break;
default:
facet = new ListFacet(elmt, config, options);
}
this._facets.push({ elmt: elmt, facet: facet });
this.update();
};
BrowsingEngine.prototype._createFacetContainer = function() {
return $('').addClass("facet-container").appendTo(this._elmts.facets);
};
BrowsingEngine.prototype.removeFacet = function(facet) {
var update = facet.hasSelection();
for (var i = this._facets.length - 1;i >= 0; i--) {
if (this._facets[i].facet === facet) {
var elmt = this._facets[i].elmt;
this._facets.splice(i, 1);
// This makes really big facet disappear right away. If you just call remove()
// then it takes a while for all the event handlers to get unwired, and the UI
// appear frozen.
elmt.hide();
window.setTimeout(function() {
elmt.remove();
}, 300);
break;
}
}
if (update) {
Gridworks.update({ engineChanged: true });
}
};
BrowsingEngine.prototype.update = function(onDone) {
var self = this;
this._elmts.controls.hide();
this._elmts.indicator.show();
$.post(
"/command/compute-facets?" + $.param({ project: theProject.id }),
{ engine: JSON.stringify(this.getJSON(true)) },
function(data) {
var facetData = data.facets;
for (var i = 0; i < facetData.length; i++) {
self._facets[i].facet.updateState(facetData[i]);
}
self._elmts.indicator.hide();
if (self._facets.length > 0) {
self._elmts.help.hide();
self._elmts.controls.show();
} else {
self._elmts.help.show();
}
if (onDone) {
onDone();
}
},
"json"
);
};
BrowsingEngine.prototype.reset = function() {
for (var i = 0; i < this._facets.length; i++) {
this._facets[i].facet.reset();
}
Gridworks.update({ engineChanged: true });
};
BrowsingEngine.prototype.remove = function() {
var oldFacets = this._facets;
this._facets = [];
for (var i = 0; i < oldFacets.length; i++) {
oldFacets[i].elmt.hide();
}
window.setTimeout(function() {
for (var i = 0; i < oldFacets.length; i++) {
oldFacets[i].elmt.remove();
}
}, 300);
Gridworks.update({ engineChanged: true });
};