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127 lines
3.3 KiB
127 lines
3.3 KiB
2 years ago
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/*
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YUI 3.17.2 (build 9c3c78e)
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Copyright 2014 Yahoo! Inc. All rights reserved.
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Licensed under the BSD License.
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http://yuilibrary.com/license/
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*/
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YUI.add('axis-category', function (Y, NAME) {
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/**
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* Provides functionality for drawing a category axis for use with a chart.
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*
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* @module charts
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* @submodule axis-category
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*/
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var Y_Lang = Y.Lang;
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/**
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* CategoryAxis draws a category axis for a chart.
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*
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* @class CategoryAxis
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* @constructor
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* @extends Axis
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* @uses CategoryImpl
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* @param {Object} config (optional) Configuration parameters.
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* @submodule axis-category
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*/
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Y.CategoryAxis = Y.Base.create("categoryAxis", Y.Axis, [Y.CategoryImpl], {
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/**
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* Returns a string corresponding to the first label on an
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* axis.
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*
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* @method getMinimumValue
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* @return String
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*/
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getMinimumValue: function()
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{
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var data = this.get("data"),
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label = data[0];
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return label;
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},
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/**
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* Returns a string corresponding to the last label on an
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* axis.
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*
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* @method getMaximumValue
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* @return String
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*/
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getMaximumValue: function()
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{
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var data = this.get("data"),
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len = data.length - 1,
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label = data[len];
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return label;
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},
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/**
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* Calculates and returns a value based on the number of labels and the index of
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* the current label.
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*
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* @method _getLabelByIndex
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* @param {Number} i Index of the label.
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* @return String
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* @private
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*/
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_getLabelByIndex: function(i)
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{
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var label,
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data = this.get("data");
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label = data[i];
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return label;
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},
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/**
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* Returns an object literal containing and array of label values and an array of points.
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*
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* @method _getLabelData
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* @param {Object} startPoint An object containing x and y values.
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* @param {Number} edgeOffset Distance to offset coordinates.
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* @param {Number} layoutLength Distance that the axis spans.
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* @param {Number} count Number of labels.
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* @param {String} direction Indicates whether the axis is horizontal or vertical.
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* @param {Array} Array containing values for axis labels.
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* @return Array
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* @private
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*/
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_getLabelData: function(constantVal, staticCoord, dynamicCoord, min, max, edgeOffset, layoutLength, count, dataValues)
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{
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var labelValue,
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i,
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points = [],
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values = [],
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point,
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labelIndex,
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data = this.get("data"),
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offset = edgeOffset;
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dataValues = dataValues || data;
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for(i = 0; i < count; i = i + 1)
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{
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labelValue = dataValues[i];
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labelIndex = Y.Array.indexOf(data, labelValue);
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if(Y_Lang.isNumber(labelIndex) && labelIndex > -1)
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{
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point = {};
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point[staticCoord] = constantVal;
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point[dynamicCoord] = this._getCoordFromValue(
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min,
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max,
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layoutLength,
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labelIndex,
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offset
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);
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points.push(point);
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values.push(labelValue);
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}
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}
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return {
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points: points,
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values: values
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};
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}
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});
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}, '3.17.2', {"requires": ["axis", "axis-category-base"]});
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