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ts_web/elements/00group-chart/dees-chart-bar/component.ts

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+import {
+  customElement,
+  property,
+  type TemplateResult,
+} from '@design.estate/dees-element';
+
+import { DeesChartEchartsBase } from '../dees-chart-echarts-base.js';
+import { demoFunc } from './demo.js';
+import { barStyles } from './styles.js';
+import { renderChartBar } from './template.js';
+import { getEchartsSeriesColors } from '../dees-chart-echarts-theme.js';
+
+export interface IBarSeriesItem {
+  name: string;
+  data: number[];
+  color?: string;
+}
+
+declare global {
+  interface HTMLElementTagNameMap {
+    'dees-chart-bar': DeesChartBar;
+  }
+}
+
+@customElement('dees-chart-bar')
+export class DeesChartBar extends DeesChartEchartsBase {
+  public static demo = demoFunc;
+  public static demoGroups = ['Chart'];
+
+  @property({ type: Array })
+  accessor categories: string[] = [];
+
+  @property({ type: Array })
+  accessor series: IBarSeriesItem[] = [];
+
+  @property({ type: Boolean })
+  accessor horizontal: boolean = false;
+
+  @property({ type: Boolean })
+  accessor stacked: boolean = false;
+
+  @property({ type: Boolean })
+  accessor showLegend: boolean = true;
+
+  @property({ attribute: false })
+  accessor valueFormatter: (value: number) => string = (val) => `${val}`;
+
+  public static styles = barStyles;
+
+  public render(): TemplateResult {
+    return renderChartBar(this);
+  }
+
+  public async updated(changedProperties: Map<string, any>) {
+    super.updated(changedProperties);
+    if (
+      this.chartInstance &&
+      (changedProperties.has('categories') ||
+        changedProperties.has('series') ||
+        changedProperties.has('horizontal') ||
+        changedProperties.has('stacked') ||
+        changedProperties.has('showLegend'))
+    ) {
+      this.updateChart();
+    }
+  }
+
+  protected buildOption(): Record<string, any> {
+    const seriesColors = getEchartsSeriesColors(this.goBright);
+    const isDark = !this.goBright;
+    const formatter = this.valueFormatter;
+
+    const categoryAxis: Record<string, any> = {
+      type: 'category',
+      data: this.categories,
+      axisLine: { lineStyle: { color: isDark ? 'hsl(0 0% 20%)' : 'hsl(0 0% 85%)' } },
+      axisLabel: { color: isDark ? 'hsl(0 0% 63.9%)' : 'hsl(0 0% 40%)' },
+    };
+
+    const valueAxis: Record<string, any> = {
+      type: 'value',
+      axisLine: { show: false },
+      axisLabel: {
+        color: isDark ? 'hsl(0 0% 63.9%)' : 'hsl(0 0% 40%)',
+        formatter: (val: number) => formatter(val),
+      },
+      splitLine: { lineStyle: { color: isDark ? 'hsl(0 0% 14%)' : 'hsl(0 0% 92%)' } },
+    };
+
+    const seriesData = this.series.map((s, index) => ({
+      name: s.name,
+      type: 'bar' as const,
+      data: s.data,
+      stack: this.stacked ? 'total' : undefined,
+      itemStyle: {
+        color: s.color || seriesColors[index % seriesColors.length],
+        borderRadius: this.stacked ? [0, 0, 0, 0] : this.horizontal ? [0, 4, 4, 0] : [4, 4, 0, 0],
+      },
+      barMaxWidth: 40,
+      emphasis: {
+        itemStyle: {
+          shadowBlur: 6,
+          shadowColor: 'rgba(0, 0, 0, 0.15)',
+        },
+      },
+    }));
+
+    // For stacked bars, round the top corners of the last visible series
+    if (this.stacked && seriesData.length > 0) {
+      const last = seriesData[seriesData.length - 1];
+      last.itemStyle.borderRadius = this.horizontal ? [0, 4, 4, 0] : [4, 4, 0, 0];
+    }
+
+    return {
+      tooltip: {
+        trigger: 'axis',
+        axisPointer: { type: 'shadow' },
+        formatter: (params: any) => {
+          const items = Array.isArray(params) ? params : [params];
+          let result = `<strong>${items[0].axisValueLabel}</strong><br/>`;
+          for (const p of items) {
+            result += `${p.marker} ${p.seriesName}: <strong>${formatter(p.value)}</strong><br/>`;
+          }
+          return result;
+        },
+      },
+      legend: this.showLegend && this.series.length > 1
+        ? { bottom: 8, itemWidth: 10, itemHeight: 10 }
+        : { show: false },
+      grid: {
+        left: 16,
+        right: 16,
+        top: 16,
+        bottom: this.showLegend && this.series.length > 1 ? 40 : 16,
+        containLabel: true,
+      },
+      xAxis: this.horizontal ? valueAxis : categoryAxis,
+      yAxis: this.horizontal ? categoryAxis : valueAxis,
+      series: seriesData,
+    };
+  }
+}