RandomSec/main/webapp/scripts/project/browsing-engine.js
Stefano Mazzocchi 365868564f create 'main' and 'server'
git-svn-id: http://google-refine.googlecode.com/svn/branches/split-refactor@905 7d457c2a-affb-35e4-300a-418c747d4874
2010-05-30 16:52:50 +00:00

265 lines
9.0 KiB
JavaScript

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 });
}
}
}
BrowsingEngine.prototype.resize = function() {
if (this._facets.length > 0) {
var body = this._div.find(".facets-container");
var bodyPaddings = body.outerHeight(true) - body.height();
var height =
this._div.height() -
this._div.find(".browsing-panel-header").outerHeight(true) -
this._div.find(".browsing-panel-modes").outerHeight(true) -
bodyPaddings;
body.css("height", height + "px");
this._elmts.facets.sortable("refresh");
}
};
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(
'<div class="browsing-panel-help" bind="help">' +
'<h1>Explore data ...</h1>' +
'<p>by choosing a facet or filter method from the menus at the top of each column.</p>' +
'<p>Not sure how to get started? <a href="http://vimeo.com/groups/gridworks/videos" target="_blank">Watch these screencasts</a>.</p>' +
'</div>' +
'<div class="browsing-panel-modes">' +
'Browse by ' +
'<span bind="modeSelectors">' +
'<input type="radio" id="browsing-panel-mode-row-based" name="browsing-panel-mode" value="row-based" /><label for="browsing-panel-mode-row-based">rows</label>' +
'<input type="radio" id="browsing-panel-mode-record-based" name="browsing-panel-mode" value="record-based" /><label for="browsing-panel-mode-record-based">records</label>' +
'</span>' +
'</div>' +
'<div class="browsing-panel-header" bind="header">' +
'<div class="browsing-panel-indicator" bind="indicator">' +
'<img src="images/small-spinner.gif" /> refreshing facets ...' +
'</div>' +
'<div class="browsing-panel-controls" bind="controls"><div class="grid-layout layout-tightest layout-full"><table>' +
'<tr>' +
'<td>' +
'<a href="javascript:{}" bind="refreshLink" class="action" title="Make sure all facets are up-to-date">Refresh</a>' +
'</td>' +
'<td width="1%">' +
'<a href="javascript:{}" bind="resetLink" class="action" title="Clear selection in all facets">Reset&nbsp;All</a>' +
'</td>' +
'<td width="1%">' +
'<a href="javascript:{}" bind="removeLink" class="action" title="Remove all facets">Remove&nbsp;All</a>' +
'</td>' +
'</tr>' +
'</table></div></div>' +
'</div>' +
'<ul bind="facets" class="facets-container"></ul>'
);
this._elmts = DOM.bind(this._div);
this._elmts.facets.sortable({
handle: '.facet-title',
update: function(event, ui) {
self._updateFacetOrder();
}
});
$("#browsing-panel-mode-" +
(theProject.recordModel.hasRecords ? 'record-based' : 'row-based')).attr("checked", "checked");
this._elmts.modeSelectors.buttonset();
this._elmts.modeSelectors.find("input").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: [],
mode: this._elmts.modeSelectors.find("input:checked")[0].value
};
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 });
Gridworks.update({ engineChanged: true });
};
BrowsingEngine.prototype._createFacetContainer = function() {
return $('<li></li>').addClass("facet-container").attr("id","facet-" + this._facets.length).hide().appendTo(this._elmts.facets);
};
BrowsingEngine.prototype.removeFacet = function(facet) {
var update = facet.hasSelection();
for (var i = this._facets.length - 1;i >= 0; i--) {
var facetRecord = this._facets[i];
if (facetRecord.facet === facet) {
this._facets.splice(i, 1);
facetRecord.facet.dispose();
// 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.
facetRecord.elmt.hide();
window.setTimeout(function() {
facetRecord.elmt.remove();
}, 300);
break;
}
}
for (var i = 0; i < this._facets.length; i++) {
if (typeof this._facets[i].facet.update == "function") {
this._facets[i].facet.update();
}
}
if (update) {
Gridworks.update({ engineChanged: true });
}
};
BrowsingEngine.prototype.update = function(onDone) {
var self = this;
this._elmts.help.hide();
this._elmts.header.show();
this._elmts.controls.css("visibility", "hidden");
this._elmts.indicator.css("visibility", "visible");
$.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.css("visibility", "hidden");
if (self._facets.length > 0) {
self._elmts.header.show();
self._elmts.controls.css("visibility", "visible");
self.resize();
} 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++) {
var facet = oldFacets[i];
facet.facet.dispose();
facet.elmt.hide();
}
window.setTimeout(function() {
for (var i = 0; i < oldFacets.length; i++) {
oldFacets[i].elmt.remove();
}
}, 300);
Gridworks.update({ engineChanged: true });
};