D3JS Histogram settings

d3_settings.js

function histogram_settings(jQuery, d3, id, colors, data) {

    var t = this;
    var stack = d3.layout.stack();
    stack(data);

    t.getId = function() { 
        return id; 
    }
    t.getDataset = function() { 
        return data; 
    }
    t.getColors = function() {
        return colors;
    }
    t.getWidth = function() {
        return jQuery("#" + t.getId()).width();
    }
    t.getHeight = function() {
        return jQuery("#" + t.getId()).height();
    }
    t.getPadding = function() {
        return {
            "top": 40,
            "right": 40,
            "bottom": 40,
            "left": 40
        };
    }
    t.x = {
        getDomain: function() {
            return [
                new Date(data[0][0].time),
                d3.time.day.offset(new Date(data[0][data[0].length - 1].time), 1)
            ];
        },
        getRange: function() {
            return [
                0,
                t.getWidth() - t.getPadding().left - t.getPadding().right
            ];
        },
        getTicks: function() {
            return Math.floor(data[0].length/7);
        }
    }
    t.y = {
        getDomain: function() {
            return [
                0,
                d3.max(data, function(d) { 
                    return d3.max(d, function(d) { 
                        return d.y0 + d.y; 
                    }); 
                }),
            ];
        },
        getRange: function() {
            return [
                t.getHeight() - t.getPadding().bottom - t.getPadding().top,
                0
            ];
        },
        getTicks: function() {
            return 10;
        }
    }
    t.groups = {
        attr: {
            getTransform: function() {
                return "translate(" + t.getPadding().left + "," + (t.getHeight() - t.getPadding().bottom) + ")";
            }
        },
        style: {
            f_fill: function(d, i) {
                return t.getColors()[data.indexOf(d)][1];
            }
        }
    };
    t.getRects = function(xScale, yScale) {
        var q = this;
        q.f_data = function(d) {
            return d;
        };
        q.transition = {
            f_duration: function(d,i) {
                return 100;
            },
            attr: {
                f_x: function(d) {
                    return xScale(new Date(d.time));
                },
                f_y: function(d) {
                    return -(-yScale(d.y0) - yScale(d.y) + (t.getHeight() - t.getPadding().top - t.getPadding().bottom) * 2);
                },
                f_height: function(d) {
                    return -yScale(d.y) + (t.getHeight() - t.getPadding().top - t.getPadding().bottom);
                },
                width: function() {
                    return (t.getWidth() - t.getPadding().left - t.getPadding().right) / data[0].length * (5/8)
                }
            }
        };
        return q;
    };
    t.svg = {
        x: {
            axis: {
                transform: function() {
                    return "translate(40," + (t.getHeight() - t.getPadding().bottom) + ")";
                }
            }
        },
        y: {
            axis: {
                transform: function() {
                    return "translate(" + t.getPadding().left + "," + t.getPadding().top + ")";
                }
            }
        }
    }

    return t;
};