570 lines
19 KiB
JavaScript
570 lines
19 KiB
JavaScript
// 确保 Chart.js 已加载
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if (!window.Chart) {
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const script = document.createElement('script');
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script.src = '../chart.min.js';
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document.head.appendChild(script);
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}
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class FloatingChartWindow extends HTMLElement {
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// 添加静态计数器
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static zIndexCounter = 1;
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constructor() {
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super();
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this.attachShadow({ mode: 'open' });
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// 初始化状态
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this.position = { x: 100, y: 100 };
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this.size = { width: 400, height: 300 };
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this.isDragging = false;
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this.dragOffset = { x: 0, y: 0 };
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this.isResizing = false;
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this.resizeStart = { x: 0, y: 0 };
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this.isMinimized = false;
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this.chartInstance = null;
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this.zIndex = FloatingChartWindow.zIndexCounter++;
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// 存储初始属性值
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this._title = this.getAttribute('title') || '图表窗口';
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this._initialPosition = this.getAttribute('initial-position') ?
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JSON.parse(this.getAttribute('initial-position')) : { x: 100, y: 100 };
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this._initialSize = this.getAttribute('initial-size') ?
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JSON.parse(this.getAttribute('initial-size')) : { width: 400, height: 300 };
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this._chartData = this.getAttribute('chart-data') ?
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JSON.parse(this.getAttribute('chart-data')) : { labels: [], datasets: [] };
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this._chartOptions = this.getAttribute('chart-options') ?
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JSON.parse(this.getAttribute('chart-options')) : {};
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// 绑定方法
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this.handleMouseDown = this.handleMouseDown.bind(this);
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this.handleMouseMove = this.handleMouseMove.bind(this);
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this.handleMouseUp = this.handleMouseUp.bind(this);
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this.handleResizeStart = this.handleResizeStart.bind(this);
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this.handleResize = this.handleResize.bind(this);
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this.handleResizeEnd = this.handleResizeEnd.bind(this);
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this.handleMinimize = this.handleMinimize.bind(this);
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this.handleClose = this.handleClose.bind(this);
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}
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static get observedAttributes() {
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return ['title', 'initial-position', 'initial-size', 'chart-data', 'chart-options', 'z-index'];
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}
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connectedCallback() {
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this.render();
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this.initChart();
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this.addEventListeners();
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// 应用初始属性值
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this.updateTitle(this._title);
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this.position = this._initialPosition;
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this.size = this._initialSize;
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this.updatePosition();
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this.updateSize();
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this.updateChartData(this._chartData);
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this.updateChartOptions(this._chartOptions);
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this.updateZIndex(this.zIndex);
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// 触发 connected 事件
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this.dispatchEvent(new CustomEvent('connected'));
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}
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disconnectedCallback() {
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this.removeEventListeners();
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if (this.chartInstance) {
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this.chartInstance.destroy();
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}
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}
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attributeChangedCallback(name, oldValue, newValue) {
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if (oldValue === newValue) return;
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// 存储新的属性值
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switch (name) {
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case 'title':
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this._title = newValue;
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break;
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case 'initial-position':
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this._initialPosition = JSON.parse(newValue);
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break;
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case 'initial-size':
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this._initialSize = JSON.parse(newValue);
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break;
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case 'chart-data':
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this._chartData = JSON.parse(newValue);
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break;
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case 'chart-options':
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this._chartOptions = JSON.parse(newValue);
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break;
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case 'z-index':
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this.zIndex = parseInt(newValue);
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break;
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}
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// 如果组件已经渲染，则更新相应的值
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if (this.shadowRoot) {
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switch (name) {
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case 'title':
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this.updateTitle(this._title);
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break;
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case 'initial-position':
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this.position = this._initialPosition;
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this.updatePosition();
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break;
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case 'initial-size':
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this.size = this._initialSize;
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this.updateSize();
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break;
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case 'chart-data':
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this.updateChartData(this._chartData);
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break;
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case 'chart-options':
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this.updateChartOptions(this._chartOptions);
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break;
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case 'z-index':
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this.updateZIndex(this.zIndex);
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break;
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}
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}
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}
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render() {
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const style = document.createElement('style');
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style.textContent = `
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.floating-window {
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position: fixed;
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background: white;
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border-radius: 8px;
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box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
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display: flex;
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flex-direction: column;
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overflow: hidden;
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}
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.window-header {
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background: #f5f5f5;
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padding: 8px 12px;
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display: flex;
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justify-content: space-between;
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align-items: center;
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cursor: move;
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user-select: none;
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border-bottom: 1px solid #e8e8e8;
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flex-shrink: 0;
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}
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.window-title {
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font-size: 14px;
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font-weight: 500;
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color: #262626;
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}
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.window-controls {
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display: flex;
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gap: 8px;
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}
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.window-control-button {
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width: 24px;
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height: 24px;
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border: none;
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background: transparent;
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cursor: pointer;
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display: flex;
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align-items: center;
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justify-content: center;
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font-size: 16px;
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color: #666;
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border-radius: 4px;
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transition: all 0.3s;
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}
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.window-control-button:hover {
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background: rgba(0, 0, 0, 0.05);
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color: #262626;
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}
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.window-control-button.close-button:hover {
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background: #ff4d4f;
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color: white;
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}
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.window-content {
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flex: 1;
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padding: 12px;
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position: relative;
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min-height: 0;
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display: flex;
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flex-direction: column;
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}
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.window-content.minimized {
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display: none;
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}
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.chart-container {
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flex: 1;
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position: relative;
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min-height: 0;
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}
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canvas {
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width: 100% !important;
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height: 100% !important;
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}
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.resize-handle {
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position: absolute;
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right: 0;
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bottom: 0;
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width: 10px;
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height: 10px;
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cursor: se-resize;
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}
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.resize-handle::after {
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content: '';
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position: absolute;
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right: 2px;
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bottom: 2px;
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width: 6px;
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height: 6px;
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border-right: 2px solid #ccc;
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border-bottom: 2px solid #ccc;
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}
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`;
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const template = document.createElement('template');
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template.innerHTML = `
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<div class="floating-window">
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<div class="window-header">
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<span class="window-title">${this.getAttribute('title') || '图表窗口'}</span>
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<div class="window-controls">
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<button class="window-control-button minimize-button">−</button>
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<button class="window-control-button close-button">×</button>
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</div>
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</div>
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<div class="window-content">
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<div class="chart-container">
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<canvas></canvas>
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</div>
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</div>
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<div class="resize-handle"></div>
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</div>
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`;
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this.shadowRoot.appendChild(style);
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this.shadowRoot.appendChild(template.content.cloneNode(true));
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// 更新位置和大小
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this.updatePosition();
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this.updateSize();
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}
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initChart() {
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const canvas = this.shadowRoot.querySelector('canvas');
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const ctx = canvas.getContext('2d');
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const chartData = JSON.parse(this.getAttribute('chart-data') || '{"labels":[],"datasets":[]}');
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const chartOptions = JSON.parse(this.getAttribute('chart-options') || '{}');
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// 基础配置
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const baseOptions = {
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responsive: true,
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maintainAspectRatio: false,
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animation: false,
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elements: {
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point: {
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radius: 0
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},
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line: {
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tension: 0
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}
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},
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scales: {
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y: {
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beginAtZero: false,
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ticks: {
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callback: function(value) {
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// 如果数值的绝对值大于1000或小于0.1，使用科学计数法
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if (Math.abs(value) > 1000 || (Math.abs(value) < 0.1 && value !== 0)) {
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return value.toExponential(1);
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}
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// 否则使用普通数字，保留一位小数
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return value.toFixed(1);
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},
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maxTicksLimit: 8 // 限制刻度数量
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}
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},
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x: {
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display: true,
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ticks: {
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callback: function(value) {
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// 如果数值大于1000，使用科学计数法
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if (value > 1000) {
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return value.toExponential(1);
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}
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return value;
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}
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}
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}
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},
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plugins: {
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legend: {
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display: true,
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position: 'top'
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},
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tooltip: {
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enabled: true,
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mode: 'index',
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intersect: false,
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callbacks: {
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label: function(context) {
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const value = context.raw;
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// 始终使用普通数字格式，保留一位小数
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return `${context.dataset.label}: ${value.toFixed(1)}`;
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}
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}
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}
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}
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};
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// 深度合并配置
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const finalOptions = {
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...baseOptions,
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scales: {
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y: {
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...baseOptions.scales.y,
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...(chartOptions.scales?.y || {}),
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ticks: {
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...baseOptions.scales.y.ticks,
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...(chartOptions.scales?.y?.ticks || {})
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}
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},
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x: {
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...baseOptions.scales.x,
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...(chartOptions.scales?.x || {}),
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ticks: {
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...baseOptions.scales.x.ticks,
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...(chartOptions.scales?.x?.ticks || {})
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}
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}
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},
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plugins: {
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...baseOptions.plugins,
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...(chartOptions.plugins || {}),
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tooltip: {
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...baseOptions.plugins.tooltip,
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...(chartOptions.plugins?.tooltip || {}),
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callbacks: {
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...baseOptions.plugins.tooltip.callbacks,
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...(chartOptions.plugins?.tooltip?.callbacks || {})
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}
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}
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}
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};
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this.chartInstance = new Chart(ctx, {
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type: 'line',
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data: chartData,
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options: finalOptions
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});
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}
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addEventListeners() {
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const header = this.shadowRoot.querySelector('.window-header');
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const minimizeButton = this.shadowRoot.querySelector('.minimize-button');
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const closeButton = this.shadowRoot.querySelector('.close-button');
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const resizeHandle = this.shadowRoot.querySelector('.resize-handle');
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header.addEventListener('mousedown', this.handleMouseDown);
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minimizeButton.addEventListener('click', this.handleMinimize);
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closeButton.addEventListener('click', this.handleClose);
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resizeHandle.addEventListener('mousedown', this.handleResizeStart);
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document.addEventListener('mousemove', this.handleMouseMove);
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document.addEventListener('mouseup', this.handleMouseUp);
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}
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removeEventListeners() {
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document.removeEventListener('mousemove', this.handleMouseMove);
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document.removeEventListener('mouseup', this.handleMouseUp);
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}
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handleMouseDown(e) {
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// 检查点击是否在标题栏或其子元素上
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const header = this.shadowRoot.querySelector('.window-header');
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if (header && (e.target === header || header.contains(e.target)) && !this.isMinimized) {
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this.isDragging = true;
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this.dragOffset = {
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x: e.clientX - this.position.x,
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y: e.clientY - this.position.y
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};
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// 点击标题栏时置顶
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const window = this.shadowRoot.querySelector('.floating-window');
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if (window) {
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this.zIndex = FloatingChartWindow.zIndexCounter++;
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window.style.zIndex = this.zIndex;
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}
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}
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}
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handleMouseMove(e) {
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if (this.isDragging) {
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// 限制拖动范围在当前页面区域
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const minX = 300; // 左侧工具栏宽度
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const minY = 100; // 顶部标签页栏高度
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this.position = {
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x: Math.max(minX, e.clientX - this.dragOffset.x),
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y: Math.max(minY, e.clientY - this.dragOffset.y)
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};
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this.updatePosition();
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} else if (this.isResizing && !this.isMinimized) {
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const deltaX = e.clientX - this.resizeStart.x;
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const deltaY = e.clientY - this.resizeStart.y;
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this.size = {
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width: Math.max(300, this.size.width + deltaX),
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height: Math.max(200, this.size.height + deltaY)
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};
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this.resizeStart = {
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x: e.clientX,
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y: e.clientY
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};
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this.updateSize();
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}
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}
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handleMouseUp() {
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this.isDragging = false;
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this.isResizing = false;
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}
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handleResizeStart(e) {
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this.isResizing = true;
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this.resizeStart = {
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x: e.clientX,
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y: e.clientY
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};
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}
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handleResize(e) {
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if (this.isResizing && !this.isMinimized) {
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const deltaX = e.clientX - this.resizeStart.x;
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const deltaY = e.clientY - this.resizeStart.y;
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this.size = {
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width: Math.max(300, this.size.width + deltaX),
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height: Math.max(200, this.size.height + deltaY)
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};
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this.resizeStart = {
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x: e.clientX,
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y: e.clientY
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};
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this.updateSize();
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// 更新图表大小
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if (this.chartInstance) {
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this.chartInstance.resize();
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}
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}
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}
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handleResizeEnd() {
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this.isResizing = false;
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}
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handleMinimize() {
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this.isMinimized = !this.isMinimized;
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const content = this.shadowRoot.querySelector('.window-content');
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const minimizeButton = this.shadowRoot.querySelector('.minimize-button');
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if (this.isMinimized) {
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content.classList.add('minimized');
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minimizeButton.textContent = '□';
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} else {
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content.classList.remove('minimized');
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minimizeButton.textContent = '−';
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}
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}
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handleClose() {
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this.dispatchEvent(new CustomEvent('close'));
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this.remove();
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}
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updatePosition() {
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const window = this.shadowRoot.querySelector('.floating-window');
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window.style.left = `${this.position.x}px`;
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window.style.top = `${this.position.y}px`;
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}
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updateSize() {
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const window = this.shadowRoot.querySelector('.floating-window');
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window.style.width = `${this.size.width}px`;
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window.style.height = `${this.size.height}px`;
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// 强制图表重新渲染
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if (this.chartInstance) {
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this.chartInstance.resize();
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}
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}
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updateTitle(title) {
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const titleElement = this.shadowRoot.querySelector('.window-title');
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titleElement.textContent = title;
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}
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updateChartData(data) {
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if (this.chartInstance) {
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// 更新数据
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this.chartInstance.data = data;
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// 强制更新配置
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const options = this.chartInstance.options;
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options.scales.y.ticks.callback = function(value) {
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if (Math.abs(value) > 1000 || (Math.abs(value) < 0.1 && value !== 0)) {
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return value.toExponential(1);
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}
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return value.toFixed(1);
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};
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options.scales.x.ticks.callback = function(value) {
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if (value > 1000) {
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return value.toExponential(1);
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}
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return value;
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};
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options.plugins.tooltip.callbacks.label = function(context) {
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const value = context.raw;
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// 始终使用普通数字格式，保留一位小数
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return `${context.dataset.label}: ${value.toFixed(1)}`;
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};
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// 更新图表
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this.chartInstance.update('none');
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}
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}
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updateChartOptions(options) {
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if (this.chartInstance) {
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Object.assign(this.chartInstance.options, options);
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this.chartInstance.update('none');
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}
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}
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updateZIndex(zIndex) {
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const window = this.shadowRoot.querySelector('.floating-window');
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if (window) {
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window.style.zIndex = zIndex;
|
||
}
|
||
}
|
||
}
|
||
|
||
customElements.define('floating-chart-window', FloatingChartWindow);
|