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scene-facet.js
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scene-facet.js
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/*
Given a domNode (a container), a dimension (which provides the facet data),
and updateAll (a function that draws all the facets on the page)
Creates a clear button within the container
Creates a container within the container for the listing of facets
Creates the listing
Returns an object with an update() method that draws the facet, using the dimension,
to the domNode
USE FILTERFUNCTION
Filters records such that the specified function
returns truthy when called with this dimension's value,
and returns this dimension.
Could use this -- given a click on a scene, we have scene s
var s = 12;
sceneCrossFilterDimension.filterFunction(function(d) {
return (d.indexOf(s) !== -1);
});
*/
define(function () {
// Return a constructor
return function (domNode, crossFilterDimensions, updateAll) {
var crossFilterDimension = crossFilterDimensions[0],
facetGroup = crossFilterDimension.group(function (textLabel) {
return textLabel
}),
$domNode = $(domNode),
$facetListingContainer,
activeFilterList = {};
function applyFilterList() {
// Convert activeFilterList hash into an array of numbers
// (unless it's a non-numeric string, e.g. "[Non-panorama history]")
var filterArray = [];
for (scene in activeFilterList) {
filterArray.push(isNaN(Number(scene)) ? scene : Number(scene));
}
// Apply filters to dimensions
if (filterArray.length === 0) {
crossFilterDimension.filterAll();
} else {
crossFilterDimension.filterFunction(function (d) {
var include = false;
// return ! (filterArray.indexOf(d) === -1);
// return (d !== undefined && d.indexOf(sceneAsNumber) !== -1);
// Go through each filter-selected scene ...
filterArray.forEach(function (selectedScene) {
// And if it's found in the list of scenes
// associated with an item, return true
if (d !== undefined && d.indexOf(selectedScene) !== -1) {
include = true;
}
});
// If none of the selected scenes are found in the item's
// associated scenes, then return false
return include;
});
}
updateAll();
}
// Add clear button
function addClearButton() {
$('<button>Clear</button>').click(function () {
clearFilter();
updateAll();
}).appendTo($domNode);
}
function addFacetListingContainer() {
$facetListingContainer = $('<div class="facet-container"></div>');
$domNode.append($facetListingContainer);
}
// Update facet listing -- this is the main draw routine
// Draw content straight to the DOM node
function update() {
// Clear what's there
$facetListingContainer.empty();
// PLAY SPACE
// Collect scenes
var sceneList = {},
highestFacetCount = 0;
facetGroup.all().forEach(function (facet) {
facet.key.forEach(function(scene) {
if (sceneList[scene] === undefined) {
sceneList[scene] = 0;
}
sceneList[scene] += facet.value;
if (sceneList[scene] > highestFacetCount)
highestFacetCount = sceneList[scene];
});
});
// Order them for display
var scenesInOrder = Object.keys(sceneList)
.sort( function(a, b) {
if (isNaN(a))
return 1
else if (isNaN(b))
return -1;
else
return Number(a) - Number(b);
});
// Go through each and create a button
scenesInOrder.forEach(function (scene) {
// If there are entries ...
if (sceneList[scene] !== 0 || true) {
var sceneAsNumber = isNaN(Number(scene)) ? scene : Number(scene),
newNodeStyle = 'margin-right: 0.1em; margin-bottom: 0.1em;' +
'opacity:' + (sceneList[scene] === 0 ? 0.3 : 1),
newNode = $('<button class="btn btn-sm" style="' +
newNodeStyle + '" ' +
'>' + scene +
'</button> '),
addFilter = function () {
activeFilterList[scene] = 1;
console.log(activeFilterList);
applyFilterList();
},
removeFilter = function () {
delete(activeFilterList[scene]);
applyFilterList();
};
// Set class according to status
if (activeFilterList[scene] !== undefined)
newNode.addClass('btn-primary')
else {
newNode.addClass('btn-default');
// newNode.addClass('active');
}
// On/off toggle click events
if (activeFilterList[scene] !== undefined) {
newNode.addClass('btn-primary');
// if (sceneList[scene] !== 0)
newNode.click(removeFilter);
} else {
newNode.click(addFilter);
}
$facetListingContainer.append(newNode);
}
});
}
function clearFilter() {
crossFilterDimension.filterAll();
activeFilterList = {};
}
// Initialize
function init() {
// addClearButton();
addFacetListingContainer();
update();
}
init();
return {
update: update,
clearFilter: clearFilter
};
}
});