Zabbix

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;

** without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

** See the GNU Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

​

class CWidgetPieChart extends CWidget {

​

    static ZBX_STYLE_DASHBOARD_WIDGET_PADDING_V = 8;

    static ZBX_STYLE_DASHBOARD_WIDGET_PADDING_H = 10;

​

    static ZBX_STYLE_PIE_CHART_LEGEND = 'svg-pie-chart-legend';

    static ZBX_STYLE_PIE_CHART_LEGEND_HEADER = 'svg-pie-chart-legend-header';

    static ZBX_STYLE_PIE_CHART_LEGEND_ITEM = 'svg-pie-chart-legend-item';

    static ZBX_STYLE_PIE_CHART_LEGEND_SHOW_VALUE = 'svg-pie-chart-legend-show-value';

    static ZBX_STYLE_PIE_CHART_LEGEND_VALUE = 'svg-pie-chart-legend-value';

    static ZBX_STYLE_PIE_CHART_LEGEND_NO_DATA = 'svg-pie-chart-legend-no-data';

​

    static DATASET_TYPE_SINGLE_ITEM = 0;

​

    // Legend single line height is 18px. Value should be synchronized with $svg-legend-line-height in scss.

    static LEGEND_LINE_HEIGHT = 18;

​

    static LEGEND_LINES_MODE_VARIABLE = 1;

​

    /**

     * @type {CSVGPie|null}

     */

    #pie_chart = null;

​

    onResize() {

        if (this.getState() === WIDGET_STATE_ACTIVE && this.#pie_chart !== null) {

            this.#pie_chart.setSize(this.#getSize());

        }

    }

​

    promiseReady() {

        const readiness = [super.promiseReady()];

​

        if (this.#pie_chart !== null) {

            readiness.push(this.#pie_chart.promiseRendered());

        }

​

        return Promise.all(readiness);

    }

​

    getUpdateRequestData() {

        const request_data = super.getUpdateRequestData();

​

        for (const [dataset_key, dataset] of request_data.fields.ds.entries()) {

            if (dataset.dataset_type != CWidgetPieChart.DATASET_TYPE_SINGLE_ITEM) {

                continue;

            }

​