在金融行業，我們經常會有審計審查的需求，對某個計算結果進行審查，但是這個計算結果可能依賴多個單元格，而且會有會有多級依賴的情況，如果讓我們的從業人員靠眼睛找，工作量巨大，而且準確性存疑，基本上死路一條，因此讓整個審查過程視覺化，迫在眉睫，現在我們利用純前端表格和Echarts將審計審查過程視覺化
一.首先我們先了解一下前端表格或Excel中引用和從屬關係：
1.在單元格B1中設定公式 =SUM(A1)。 單元格A1是單元格B1的引用單元格（引用關係）
2.在單元格B1中設定公式 =SUM(A1)。 單元格B1是單元格A1的從屬單元格（從屬關係）
二.接下來我們看一下最終實現效果：
1.引用關係
2.從屬關係
三.本次我們用的是Echarts的樹圖將引用和從屬關係視覺化，關於Echarts上手，大家去Echarts官網有完整上手教程，Echarts社群有很多開發者做的許多有趣又實用的demo，這裡我們用的是樹圖
四.接下來我們要用純前端表格控制元件的獲取引用和從屬關係的api將某個單元格的引用和從屬關係順藤摸瓜，刨根問題，刨到“祖墳”上，將這些關係，構造成Echarts樹圖的data結構，廢話不說，直接上核心程式碼
// 遞迴構建追蹤樹
buildNodeTreeAndPaint = (spreadSource, trackCellInfo) => {
let info = this.getCellInfo(trackCellInfo);
let sheetSource = spreadSource.getSheetFromName(info.sheetName);
// 建立跟節點
let rootNode = this.creatNode(info.row, info.col, sheetSource, 0, "");
let name = rootNode.sheetName + "*" + rootNode.row + "*" + rootNode.col + "*" + Math.random().toString();
let precedentsRootNode = '';
let dependentsRootNode = '';
if (this.state.trackType === "Precedents" || this.state.trackType === "Both") {
this.getNodeChild(rootNode, sheetSource, "Precedents")
debugger;
console.log(rootNode)
if (this.state.trackType === "Both") {
let rootNodeChildren = JSON.parse(JSON.stringify(rootNode.children));
rootNode.children = [];
precedentsRootNode = JSON.parse(JSON.stringify(rootNode));
precedentsRootNode.children.push({
name: "Precedents",
value: "Precedents",
children: rootNodeChildren
})
this.setState({
precedentsRootNode: JSON.parse(JSON.stringify(precedentsRootNode)),
})
}
}
if (this.state.trackType === "Dependents" || this.state.trackType === "Both") {
this.getNodeChild(rootNode, sheetSource, "Dependents")
console.log(rootNode)
if (this.state.trackType === "Both") {
let deepInfo = [1];
let rootNodeChildren = JSON.parse(JSON.stringify(rootNode.children));
rootNode.children = [];
dependentsRootNode = JSON.parse(JSON.stringify(rootNode));
dependentsRootNode.children.push({
name: "Dependents",
value: "Dependents",
children: rootNodeChildren
})
this.setState({
dependentsRootNode: JSON.parse(JSON.stringify(dependentsRootNode)),
})
}
}
if (this.state.trackType === "Both") {
precedentsRootNode.children = precedentsRootNode.children.concat(dependentsRootNode.children);
// let bothRootNode = precedentsRootNode.children[0].children.concat(dependentsRootNode.children[0].children)
this.setState({
rootNode1: JSON.parse(JSON.stringify(precedentsRootNode)),
})
} else {
this.setState({
rootNode1: JSON.parse(JSON.stringify(rootNode)),
})
}
}
creatNode = (row, col, sheet, deep, trackType) => {
let node = {
value: sheet.getValue(row, col),
position: sheet.name() + "!" + GC.Spread.Sheets.CalcEngine.rangeToFormula(new GC.Spread.Sheets.Range(row, col, 1, 1)),
deep: deep,
name: `${sheet.name()}!${GC.Spread.Sheets.CalcEngine.rangeToFormula(new GC.Spread.Sheets.Range(row, col, 1, 1))}\nvalue:${sheet.getValue(row, col)}`,
sheetName: sheet.name(),
row: row,
col: col,
trackType: trackType
};
return node;
}
getNodeChild = (rootNode, sheet, trackType) => {
let childNodeArray = [];
let children = [];
let row = rootNode.row, col = rootNode.col, deep = rootNode.deep;
if (trackType == "Precedents") {
children = sheet.getPrecedents(row, col);
}
else {
children = sheet.getDependents(row, col);
}
// let self = this;
if (children.length >= 1) {
children.forEach((node) => {
let row = node.row,
col = node.col,
rowCount = node.rowCount,
colCount = node.colCount,
_sheet = sheet.parent.getSheetFromName(node.sheetName);
if (rowCount > 1 || colCount > 1) {
for (let r = row; r < row + rowCount; r++) {
for (let c = col; c < col + colCount; c++) {
let newNode = this.creatNode(r, c, _sheet, deep + 1, trackType)
// if (deep < self.maxDeep) {
this.getNodeChild(newNode, _sheet, trackType);
// }
childNodeArray.push(newNode);
}
}
} else {
let newNode = this.creatNode(row, col, _sheet, deep + 1, trackType)
// if (deep < self.maxDeep) {
this.getNodeChild(newNode, _sheet, trackType);
// }
childNodeArray.push(newNode);
}
});
}
rootNode.children = childNodeArray;
}
五.將構造好的引用和從屬樹rootNode在Echarts中渲染
myChart.setOption(
(option = {
tooltip: {
trigger: 'item',
triggerOn: 'mousemove'
},
series: [
{
type: 'tree',
data: [this.state.rootNode1],
top: '1%',
left: '15%',
bottom: '1%',
right: '7%',
symbolSize: 10,
orient: this.state.trackType === 'review'?'LR':'RL',
label: {
position: this.state.trackType === 'review'?'left':'right',
verticalAlign: 'middle',
align: this.state.trackType === 'review'?'right':'left',
},
leaves: {
label: {
position: this.state.trackType === 'review'?'right':'left',
verticalAlign: 'middle',
align: this.state.trackType === 'review'?'left':'right'
}
},
emphasis: {
focus: 'descendant'
},
// layout: 'radial',
expandAndCollapse: true,
animationDuration: 550,
animationDurationUpdate: 750
}
]
})
);
option && myChart.setOption(option);
以上就是實現報表中公式引用從屬關係Echarts視覺化的核心實現邏輯，由於工程較大，需要完整內容可以留言。。