"use strict";
/* Copyright 2015 Bloomberg Finance L.P.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
    result["default"] = mod;
    return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
const d3 = __importStar(require("d3"));
// var d3 =Object.assign({}, require("d3-scale"));
const Scale_1 = require("./Scale");
const _ = __importStar(require("underscore"));
class OrdinalScale extends Scale_1.Scale {
    render() {
        this.scale = d3.scaleBand();
        this.scale.domain(this.model.domain);
        this.offset = 0;
        this.create_event_listeners();
    }
    set_range(range, padding) {
        padding = (padding === undefined) ? 0 : padding;
        this.scale.range(range);
        this.scale.paddingInner(padding);
        this.scale.paddingOuter(padding / 2.0);
        this.offset = (this.scale.domain().length === 0) ? 0 : this.scale.bandwidth() / 2.0;
    }
    expand_domain(old_range, new_range) {
        // If you have a current range and then a new range and want to
        // expand the domain to expand to the new range but keep it
        // consistent with the previous one, this is the function you use.
        // I am trying to expand the ordinal scale by setting an
        // appropriate value for the outer padding of the ordinal scale so
        // that the starting point of each of the bins match. once that
        // happens, the labels are placed at the center of the bins
        const unpadded_scale = this.scale.copy();
        unpadded_scale.range(old_range).paddingInner(0).paddingOuter(0);
        const outer_padding = (unpadded_scale.range().length > 0) ?
            Math.abs((new_range[1] - old_range[1]) / unpadded_scale.bandwidth()) : 0;
        this.scale.range(new_range);
        this.scale.paddingInner(0.0);
        this.scale.paddingOuter(outer_padding);
    }
    invert(pixel) {
        // returns the element in the domain which is closest to pixel
        // value passed. If the pixel is outside the range of the scale,
        const that = this;
        const domain = this.scale.domain();
        const pixel_vals = domain.map(function (d) {
            return that.scale(d) + that.scale.bandwidth() / 2;
        });
        const abs_diff = pixel_vals.map(function (d) {
            return Math.abs(pixel - d);
        });
        return domain[abs_diff.indexOf(d3.min(abs_diff))];
    }
    invert_range(pixels) {
        //return all the indices between a range
        //pixels should be a non-decreasing two element array
        const that = this;
        const domain = this.scale.domain();
        const pixel_vals = domain.map(function (d) {
            return that.scale(d) + that.scale.bandwidth() / 2;
        });
        const indices = _.range(pixel_vals.length);
        const filtered_ind = indices.filter(function (ind) {
            return (pixel_vals[ind] >= pixels[0] &&
                pixel_vals[ind] <= pixels[1]);
        });
        return filtered_ind.map(function (ind) { return domain[ind]; });
    }
}
exports.OrdinalScale = OrdinalScale;
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