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+Sencha Documentation Project/**
+ * @class Ext.chart.axis.Category
+ * @extends Ext.chart.axis.Axis
+ *
+ * A type of axis that displays items in categories. This axis is generally used to
+ * display categorical information like names of items, month names, quarters, etc.
+ * but no quantitative values. For that other type of information <em>Number</em>
+ * axis are more suitable.
+ *
+ * As with other axis you can set the position of the axis and its title. For example:
+ *
+ * {@img Ext.chart.axis.Category/Ext.chart.axis.Category.png Ext.chart.axis.Category chart axis}
+ *
+ * var store = Ext.create('Ext.data.JsonStore', {
+ * fields: ['name', 'data1', 'data2', 'data3', 'data4', 'data5'],
+ * data: [
+ * {'name':'metric one', 'data1':10, 'data2':12, 'data3':14, 'data4':8, 'data5':13},
+ * {'name':'metric two', 'data1':7, 'data2':8, 'data3':16, 'data4':10, 'data5':3},
+ * {'name':'metric three', 'data1':5, 'data2':2, 'data3':14, 'data4':12, 'data5':7},
+ * {'name':'metric four', 'data1':2, 'data2':14, 'data3':6, 'data4':1, 'data5':23},
+ * {'name':'metric five', 'data1':27, 'data2':38, 'data3':36, 'data4':13, 'data5':33}
+ * ]
+ * });
+ *
+ * Ext.create('Ext.chart.Chart', {
+ * renderTo: Ext.getBody(),
+ * width: 500,
+ * height: 300,
+ * store: store,
+ * axes: [{
+ * type: 'Numeric',
+ * grid: true,
+ * position: 'left',
+ * fields: ['data1', 'data2', 'data3', 'data4', 'data5'],
+ * title: 'Sample Values',
+ * grid: {
+ * odd: {
+ * opacity: 1,
+ * fill: '#ddd',
+ * stroke: '#bbb',
+ * 'stroke-width': 1
+ * }
+ * },
+ * minimum: 0,
+ * adjustMinimumByMajorUnit: 0
+ * }, {
+ * type: 'Category',
+ * position: 'bottom',
+ * fields: ['name'],
+ * title: 'Sample Metrics',
+ * grid: true,
+ * label: {
+ * rotate: {
+ * degrees: 315
+ * }
+ * }
+ * }],
+ * series: [{
+ * type: 'area',
+ * highlight: false,
+ * axis: 'left',
+ * xField: 'name',
+ * yField: ['data1', 'data2', 'data3', 'data4', 'data5'],
+ * style: {
+ * opacity: 0.93
+ * }
+ * }]
+ * });
+ *
+ * In this example with set the category axis to the bottom of the surface, bound the axis to
+ * the <em>name</em> property and set as title <em>Month of the Year</em>.
+ */
+
+Ext.define('Ext.chart.axis.Category', {
+
+ /* Begin Definitions */
+
+ extend: 'Ext.chart.axis.Axis',
+
+ alternateClassName: 'Ext.chart.CategoryAxis',
+
+ alias: 'axis.category',
+
+ /* End Definitions */
+
+ /**
+ * A list of category names to display along this axis.
+ *
+ * @property categoryNames
+ * @type Array
+ */
+ categoryNames: null,
+
+ /**
+ * Indicates whether or not to calculate the number of categories (ticks and
+ * labels) when there is not enough room to display all labels on the axis.
+ * If set to true, the axis will determine the number of categories to plot.
+ * If not, all categories will be plotted.
+ *
+ * @property calculateCategoryCount
+ * @type Boolean
+ */
+ calculateCategoryCount: false,
+
+ // @private creates an array of labels to be used when rendering.
+ setLabels: function() {
+ var store = this.chart.store,
+ fields = this.fields,
+ ln = fields.length,
+ i;
+
+ this.labels = [];
+ store.each(function(record) {
+ for (i = 0; i < ln; i++) {
+ this.labels.push(record.get(fields[i]));
+ }
+ }, this);
+ },
+
+ // @private calculates labels positions and marker positions for rendering.
+ applyData: function() {
+ this.callParent();
+ this.setLabels();
+ var count = this.chart.store.getCount();
+ return {
+ from: 0,
+ to: count,
+ power: 1,
+ step: 1,
+ steps: count - 1
+ };
+ }
+});
+
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