133 lines
3.4 KiB
JavaScript
133 lines
3.4 KiB
JavaScript
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/**
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* 连地址哈希表
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*/
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SV.registerLayout('ChainHashTable', {
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defineOptions() {
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return {
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element: {
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head: {
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type: 'two-cell-node',
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label: '[id]',
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size: [70, 40],
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style: {
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stroke: '#333',
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fill: '#b83b5e'
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}
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},
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node: {
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type: 'link-list-node',
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label: '[id]',
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size: [60, 30],
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style: {
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stroke: '#333',
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fill: '#b83b5e'
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}
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}
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},
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link: {
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start: {
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type: 'line',
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sourceAnchor: 1,
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targetAnchor: 6,
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style: {
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stroke: '#333',
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endArrow: {
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path: G6.Arrow.triangle(8, 6, 0),
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fill: '#333'
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},
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startArrow: {
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path: G6.Arrow.circle(2, -1),
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fill: '#333'
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}
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}
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},
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next: {
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type: 'line',
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sourceAnchor: 2,
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targetAnchor: 6,
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style: {
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stroke: '#333',
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endArrow: {
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path: G6.Arrow.triangle(8, 6, 0),
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fill: '#333'
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},
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startArrow: {
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path: G6.Arrow.circle(2, -1),
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fill: '#333'
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}
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}
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}
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},
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pointer: {
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external: {
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anchor: 3,
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offset: 8,
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style: {
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fill: '#f08a5d'
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}
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}
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},
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layout: {
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xInterval: 50,
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yInterval: 50
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},
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behavior: {
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dragNode: ['node']
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}
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};
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},
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/**
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* 对子树进行递归布局
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* @param node
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* @param parent
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*/
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layoutItem(node, prev, layoutOptions) {
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if(!node) {
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return null;
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}
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let width = node.get('size')[0];
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if(prev) {
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node.set('y', prev.get('y'));
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node.set('x', prev.get('x') + layoutOptions.xInterval + width);
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}
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if(node.next) {
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this.layoutItem(node.next, node, layoutOptions);
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}
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},
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layout(elements, layoutOptions) {
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let headNode = elements.filter(item => item.type === 'head');
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for(let i = 0; i < headNode.length; i++) {
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let node = headNode[i],
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height = node.get('size')[1];
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node.set('y', node.get('y') + i * height);
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if(node.start) {
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let y = node.get('y') + height - node.start.get('size')[1],
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x = layoutOptions.xInterval * 2.5;
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node.start.set({ x, y });
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this.layoutItem(node.start, null, layoutOptions);
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}
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}
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}
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});
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