如何在前端系统中使用甘特图

甘特图是项目管理、生产排程、节点管理中非常常见的一个功能。本文将介绍如何通过前端表格控件SpreadJS新增的甘特图插件，将甘特图引入到系统中，让数据的进度、排程数据的展示更加直观，让管理更加高效。通过这种结合，前端Excel的便捷录入体验和甘特图的可视化展示可以无缝的集合在一起，使得系统更易于使用。

发布于 2023/09/11 19:23

SpreadJS

前言

甘特图是项目管理、生产排程、节点管理中非常常见的一个功能。那么，有没有一种方法能够帮助将甘特图引入到系统中，让数据的进度、排程数据的展示更加直观，让管理更加高效。

今天为大家带来一个新的插件——甘特图插件。该插件是结合 SpreadJS 本身强大的前端电子表格能力提供的一种全新的可视化展示方案，能够有效地将生产计划、预算排期中的日程管理信息展示出来，显示关键路径上关键节点的进展或状态。其数据来自与集算表同源的数据管理器（DataManager），通过绑定 -> 视图的方式，将层级化的任务数据通过甘特图插件进行展示。通过这种结合，前端Excel的便捷录入体验和甘特图的可视化展示可以无缝的集合在一起，使得系统更易于使用。

通过甘特图插件展示层级化的数据

（通过甘特图插件展示层级化的数据）

1.缩放和时间刻度滚动


（通过甘特图插件实现缩放及刻度滚动）

JavaScript代码：

var myTable;
var ganttSheet;
var adjustTierUnit = true;

window.onload = function() {
    var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"), { sheetCount: 0 });
    initSpread(spread);
    initSplitView(spread);
};

function initSpread(spread) {
    spread.suspendPaint();
    initDataSource(spread);
    initGanttSheet(spread);
    spread.resumePaint();
}

function initDataSource(spread) {
    var tableName = "Gantt_Id";
    var baseApiUrl = getBaseApiUrl();
    var apiUrl = baseApiUrl + "/" + tableName;
    var dataManager = spread.dataManager();
    myTable = dataManager.addTable("myTable", {
        batch: true,
        remote: {
            read: {
                url: apiUrl
            }
        },
        schema: {
            hierarchy: {
                type: "Parent",
                column: "parentId"
            },
            columns: {
                id: { isPrimaryKey: true },
                taskNumber: { dataType: "rowOrder" }
            }
        }
    });
}

function initGanttSheet(spread) {
    ganttSheet = spread.addSheetTab(0, "GanttSheet", GC.Spread.Sheets.SheetType.ganttSheet);
    var view = myTable.addView("ganttView", [
        { value: "taskNumber", caption: "NO.", width: 60 },
        { value: "name", caption: "Task Name", width: 200 },
        { value: "duration", caption: "Duration", width: 90 },
        { value: "predecessors", caption: "Predecessors", width: 120 }
    ]);
    view.fetch().then(function() {
        ganttSheet.bindGanttView(view);
    }).then(function() {
        ganttSheet.project.timescale.zoomOut();
    });
    initSidePanel(ganttSheet);
}

2.任务栏和网格线的样式调整

通过甘特图插件实现的任务栏和网格线的样式

（通过甘特图插件实现的任务栏和网格线的样式）

JavaScript代码：

var myTable;
var ganttSheet;

window.onload = function() {
    var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"), { sheetCount: 0 });
    initSpread(spread);
    initSplitView(spread);
};

function initSpread(spread) {
    spread.suspendPaint();
    initDataSource(spread);
    initGanttSheet(spread);
    spread.resumePaint();
}

function initDataSource(spread) {
    var tableName = "Gantt_Id";
    var baseApiUrl = getBaseApiUrl();
    var apiUrl = baseApiUrl + "/" + tableName;
    var dataManager = spread.dataManager();
    myTable = dataManager.addTable("myTable", {
        batch: true,
        remote: {
            read: {
                url: apiUrl
            }
        },
        schema: {
            hierarchy: {
                type: "Parent",
                column: "parentId"
            },
            columns: {
                id: { isPrimaryKey: true },
                taskNumber: { dataType: "rowOrder" }
            }
        }
    });
}

function initGanttSheet(spread) {
    ganttSheet = spread.addSheetTab(0, "GanttSheet", GC.Spread.Sheets.SheetType.ganttSheet);
    var view = myTable.addView("ganttView", [
        { value: "taskNumber", caption: "NO.", width: 60 },
        { value: "name", caption: "Task Name", width: 200 },
        { value: "duration", caption: "Duration", width: 90 },
        { value: "predecessors", caption: "Predecessors", width: 120, visible: false }
    ]);
    view.fetch().then(function() {
        ganttSheet.bindGanttView(view);
        ganttSheet.project.timescale.tierMode = GC.Spread.Sheets.GanttSheet.TimescaleTierMode.topMiddleBottom;
        ganttSheet.project.timescale.topTier.unit = GC.Spread.Sheets.GanttSheet.TimescaleUnit.thirdsOfMonth;
    }).then(function() {
        ganttSheet.gridlines.bottomTierColumn = {
            lineType: GC.Spread.Sheets.GanttSheet.GanttGridlineType.dashed,
            lineColor: "#c85b11"
        };
        ganttSheet.gridlines.ganttRows.lineType = GC.Spread.Sheets.GanttSheet.GanttGridlineType.thin;
        ganttSheet.gridlines.ganttRows.lineColor = "#abd08f";
        ganttSheet.gridlines.ganttRows.interval = 2;
        ganttSheet.gridlines.ganttRows.intervalLineType = GC.Spread.Sheets.GanttSheet.GanttGridlineType.dashDot;
        ganttSheet.gridlines.ganttRows.intervalLineColor = "#9cc3e5";
    });
    initSidePanel(ganttSheet);
}

function initSidePanel(ganttSheet) {
    var setButton = document.getElementById("set-gridline");
    var intervalPanel = document.getElementById("interval-panel");
    var affectItemOption = document.getElementById("affectItem");
    var lineTypeOption = document.getElementById("lineType");
    var lineColorOption = document.getElementById("lineColor");
    var intervalLineTypeOption = document.getElementById("intervalLineType");
    var intervalLineColorOption = document.getElementById("intervalLineColor");
    var intervalOption = document.getElementById("interval");

    var option = convertToNormalOptions(ganttSheet, "ganttRows");
    syncOptionToPanel(option);

    affectItemOption.addEventListener('change', function(e) {
        var target = affectItemOption.value;
        if (affectItemOption.value === "ganttRows") {
            intervalPanel.classList.remove("hide");
        } else {
            intervalPanel.classList.add("hide");
        }
        var option = convertToNormalOptions(ganttSheet, target);
        syncOptionToPanel(option);
    });
    setButton.addEventListener('click', function() {
        var target = affectItemOption.value;
        var lineType = Number(lineTypeOption.value);
        var lineColor = lineColorOption.value;
        var intervalLineType = Number(intervalLineTypeOption.value);
        var intervalLineColor = intervalLineColorOption.value;
        var interval = Number(intervalOption.value);
        var option = convertToGanttGridlineOptions(lineType, lineColor, intervalLineType, intervalLineColor, interval);
        if (option) {
            ganttSheet.gridlines[target] = option;
        }
    });

3.数据展示布局调整

通过甘特图插件实现布局的调整

（通过甘特图插件实现布局的调整）

JavaScript代码：

var myTable;
var ganttSheet;
var roundBarsToWholeDays = true;

window.onload = function() {
    var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"), { sheetCount: 0 });
    initSpread(spread);
    initSplitView(spread);
};

function initSpread(spread) {
    spread.suspendPaint();
    initDataSource(spread);
    initGanttSheet(spread);
    spread.resumePaint();
}

function initDataSource(spread) {
    var tableName = "Gantt_Id";
    var baseApiUrl = getBaseApiUrl();
    var apiUrl = baseApiUrl + "/" + tableName;
    var dataManager = spread.dataManager();
    myTable = dataManager.addTable("myTable", {
        batch: true,
        remote: {
            read: {
                url: apiUrl
            }
        },
        schema: {
            hierarchy: {
                type: "Parent",
                column: "parentId"
            },
            columns: {
                id: { isPrimaryKey: true },
                taskNumber: { dataType: "rowOrder" }
            }
        }
    });
}

function initGanttSheet(spread) {
    ganttSheet = spread.addSheetTab(0, "GanttSheet", GC.Spread.Sheets.SheetType.ganttSheet);
    var view = myTable.addView("ganttView", [
        { value: "taskNumber", caption: "NO.", width: 60 },
        { value: "name", caption: "Task Name", width: 200 },
        { value: "duration", caption: "Duration", width: 90 },
        { value: "predecessors", caption: "Predecessors", width: 120, visible: false }
    ]);
    view.fetch().then(function() {
        ganttSheet.bindGanttView(view);
        ganttSheet.suspendPaint();
        var summaryStyleRule = ganttSheet.project.taskStyleRules.getRule("summary");
        var summaryStyle = summaryStyleRule.style.taskbarStyle;
        summaryStyle.leftText = "start";
        summaryStyle.rightText = "finish";
        summaryStyleRule.style.taskbarStyle = summaryStyle;
        var layout = ganttSheet.project.layout;
        layout.linkLineMode = "noLinks";
        layout.barHeight = 18;
        ganttSheet.resumePaint();
    });
    initSidePanel(ganttSheet);
}

function initSidePanel(ganttSheet) {
    var roundBarItem = document.getElementById("round-bar");
    var linkTypeItem = document.getElementById("link-type");
    var barHeightItem = document.getElementById("bar-height");
    var dateFormatItem = document.getElementById("date-format");
    var setLayoutItem = document.getElementById("set-layout");

    roundBarItem.addEventListener("click", function() {
        if (roundBarItem.classList.contains("active")) {
            roundBarItem.classList.remove("active");
            roundBarsToWholeDays = false;
        } else {
            roundBarItem.classList.add("active");
            roundBarsToWholeDays = true;
        }
    });

    setLayoutItem.addEventListener("click", function() {
        var layout = ganttSheet.project.layout;
        ganttSheet.suspendPaint();
        layout.linkLineMode = linkTypeItem.value;
        layout.barHeight = Number(barHeightItem.value);
        layout.barTextDateFormat = dateFormatItem.value;
        layout.roundBarsToWholeDays = roundBarsToWholeDays;
        ganttSheet.resumePaint();
    });
}

4.任务操作

可在甘特图插件实现任务操作

（可在甘特图插件实现任务操作）

JavaScript代码：

var myTable;
var ganttSheet;
var roundBarsToWholeDays = true;

window.onload = function () {
    var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"), { sheetCount: 0 });
    initSpread(spread);
    initSplitView(spread);
};

function initSpread(spread) {
    spread.suspendPaint();
    initDataSource(spread);
    initGanttSheet(spread);
    spread.resumePaint();
}

function initDataSource(spread) {
    var tableName = "Gantt_Id";
    var baseApiUrl = getBaseApiUrl();
    var apiUrl = baseApiUrl + "/" + tableName;
    var dataManager = spread.dataManager();
    myTable = dataManager.addTable("myTable", {
        batch: true,
        remote: {
            read: {
                url: apiUrl
            },
            batch: {
                url: apiUrl + "Collection"
            }
        },
        schema: {
            hierarchy: {
                type: "Parent",
                column: "parentId"
            },
            columns: {
                id: { isPrimaryKey: true },
                taskNumber: { dataType: "rowOrder" }
            }
        }
    });
}

function initGanttSheet(spread) {
    ganttSheet = spread.addSheetTab(0, "GanttSheet", GC.Spread.Sheets.SheetType.ganttSheet);
    var view = myTable.addView("ganttView", [
        { value: "id", caption: "Id", width: 40 },
        { value: "taskNumber", caption: "NO.", width: 60 },
        { value: "name", caption: "Task Name", width: 200 },
        { value: "duration", caption: "Duration", width: 90 },
        { value: "predecessors", caption: "Predecessors", width: 120 }
    ]);
    view.fetch().then(function () {
        ganttSheet.bindGanttView(view);
    });
    initSidePanel(ganttSheet);
}

function initSidePanel(ganttSheet) {
    var addTaskItem = document.getElementById("add-task");
    var addSummayItem = document.getElementById("add-summary");
    var addMilestoneItem = document.getElementById("add-milestone");

    var deleteItem = document.getElementById("delete-task");

    var indentTaskItem = document.getElementById("indent-task");
    var outdentTaskItem = document.getElementById("outdent-task");

    var linkTaskItem = document.getElementById("link-task");
    var unlinkTaskItem = document.getElementById("unlink-task");

    var submitItem = document.getElementById("submit-changes");
    var cancelItem = document.getElementById("cancel-changes");

    addTaskItem.addEventListener("click", function () {
        ganttSheet.suspendPaint()
        addTask();
        ganttSheet.resumePaint();
    });
    addSummayItem.addEventListener("click", function () {
        ganttSheet.suspendPaint()
        addSummary();
        ganttSheet.resumePaint();
    });
    addMilestoneItem.addEventListener("click", function () {
        ganttSheet.suspendPaint()
        addMilestone();
        ganttSheet.resumePaint();
    });

    deleteItem.addEventListener("click", function () {
        ganttSheet.suspendPaint()
        deleteTask();
        ganttSheet.resumePaint();
    });

    indentTaskItem.addEventListener("click", function () {
        ganttSheet.suspendPaint()
        indentTask();
        ganttSheet.resumePaint();
    });
    outdentTaskItem.addEventListener("click", function () {
        ganttSheet.suspendPaint()
        outdentTask();
        ganttSheet.resumePaint();
    });

    linkTaskItem.addEventListener("click", function () {
        ganttSheet.suspendPaint()
        linkTask();
        ganttSheet.resumePaint();
    });
    unlinkTaskItem.addEventListener("click", function () {
        ganttSheet.suspendPaint()
        unlinkTask();
        ganttSheet.resumePaint();
    });

    submitItem.addEventListener("click", function () {
        ganttSheet.submitChanges();
    });
    cancelItem.addEventListener("click", function () {
        ganttSheet.cancelChanges();
    });

    function addTask() {
        var project = ganttSheet.project;
        var selections = ganttSheet.getSelections();
        var insertedRow = Math.min(...selections.map(r => r.row), project.tasks.length)
        var rowCount = selections.map(r => r.rowCount).reduce((pre, current) => { return pre + current });
        var taskData = createTaskDataList(rowCount, () => ({ name: "<新任务>" }));
        project.insertTasksByRow(insertedRow, taskData);
    }

    function addSummary() {
        var project = ganttSheet.project;
        var selectedRange = ganttSheet.getSelections()[0];
        var insertedRow = selectedRange.row;
        var insertedTaskNumbers = ganttSheet.getTaskByRow(insertedRow).taskNumber || project.count;
        var selectedTasks = getSelectedRowIndexes().map((row) => ganttSheet.getTaskByRow(row)).filter((row) => !!row);

        if (selectedTasks.length == 0) {
            project.insertTasks(insertedTaskNumbers, [{ name: "<新摘要任务>" }, { name: "<新任务>" }]);
            project.indentTasks(insertedTaskNumbers + 1);
        } else {
            project.insertTasks(insertedTaskNumbers, { name: "<新摘要任务>" }, selectedTasks[0].level);
            project.indentTasks(selectedTasks.map((t) => t.taskNumber));
        }
        ganttSheet.setSelection(insertedRow, -1, 1, -1);
    }

    function addMilestone() {
        var project = ganttSheet.project;
        var selections = ganttSheet.getSelections();
        var rowCount = selections.map(r => r.rowCount).reduce((pre, current) => { return pre + current });
        var insertedRow = Math.min(...selections.map(r => r.row), project.tasks.length);
        var taskData = createTaskDataList(rowCount, () => ({ name: "<新里程碑>", duration: 0 }));
        project.insertTasksByRow(insertedRow, taskData);
        ganttSheet.setSelection(insertedRow, -1, rowCount, -1);
    }

    function deleteTask() {
        var project = ganttSheet.project;
        var rowIds = getSelectedTaskNumbers();
        project.removeTasks(rowIds);
    }

    function indentTask() {
        var project = ganttSheet.project;
        var rowIds = getSelectedTaskNumbers();
        project.indentTasks(rowIds);
    }

    function outdentTask() {
        var project = ganttSheet.project;
        var rowIds = getSelectedTaskNumbers();
        project.outdentTasks(rowIds);
    }

    function linkTask() {
        var project = ganttSheet.project;
        var links = [];
        var selections = ganttSheet.getSelections();
        var previous = -1;
        for (var range of selections) {
            if (previous != -1) {
                links.push([previous, range.row]);
            }
            for (var row = range.row + 1; row < range.row + range.rowCount; row++) {
                links.push([row - 1, row]);
            }
            previous = range.row + range.rowCount - 1;
        }
        if (links.length <= 0) {
            return;
        }
        project.suspendSchedule();
        for (var link of links) {
            var [fromTaskNumber, toTaskNumber] = link;
            try {
                project.addDependency({ fromTaskNumber, toTaskNumber });
            } catch { }
        }
        project.resumeSchedule();
    }

5.日历

可在甘特图插件内实现日历内容的调整

（可在甘特图插件内实现日历内容的调整）

JavaScript代码：

var myTable;
var ganttSheet;
var roundBarsToWholeDays = true;

window.onload = function () {
    var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"), { sheetCount: 0 });
    initSpread(spread);
    initSplitView(spread);
};

function initSpread(spread) {
    spread.suspendPaint();
    initDataSource(spread);
    initGanttSheet(spread);
    spread.resumePaint();
}

function initGanttSheet(spread) {
    ganttSheet = spread.addSheetTab(0, "GanttSheet", GC.Spread.Sheets.SheetType.ganttSheet);
    var view = myTable.addView("ganttView", [
        { value: "id", caption: "Id", width: 40 },
        { value: "taskNumber", caption: "NO.", width: 60 },
        { value: "name", caption: "Task Name", width: 200 },
        { value: "duration", caption: "Duration", width: 90 },
        { value: "predecessors", caption: "Predecessors", width: 120 }
    ]);
    view.fetch().then(function () {
        ganttSheet.bindGanttView(view);
    });
    initSidePanel(ganttSheet);
}

function initSidePanel(ganttSheet) {
    var addTaskItem = document.getElementById("add-task");
    var addSummayItem = document.getElementById("add-summary");
    var addMilestoneItem = document.getElementById("add-milestone");

    var deleteItem = document.getElementById("delete-task");

    var indentTaskItem = document.getElementById("indent-task");
    var outdentTaskItem = document.getElementById("outdent-task");

    var linkTaskItem = document.getElementById("link-task");
    var unlinkTaskItem = document.getElementById("unlink-task");

    var submitItem = document.getElementById("submit-changes");
    var cancelItem = document.getElementById("cancel-changes");

    addTaskItem.addEventListener("click", function () {
        ganttSheet.suspendPaint()
        addTask();
        ganttSheet.resumePaint();
    });
    addSummayItem.addEventListener("click", function () {
        ganttSheet.suspendPaint()
        addSummary();
        ganttSheet.resumePaint();
    });
    addMilestoneItem.addEventListener("click", function () {
        ganttSheet.suspendPaint()
        addMilestone();
        ganttSheet.resumePaint();
    });

    deleteItem.addEventListener("click", function () {
        ganttSheet.suspendPaint()
        deleteTask();
        ganttSheet.resumePaint();
    });

    indentTaskItem.addEventListener("click", function () {
        ganttSheet.suspendPaint()
        indentTask();
        ganttSheet.resumePaint();
    });
    outdentTaskItem.addEventListener("click", function () {
        ganttSheet.suspendPaint()
        outdentTask();
        ganttSheet.resumePaint();
    });

    linkTaskItem.addEventListener("click", function () {
        ganttSheet.suspendPaint()
        linkTask();
        ganttSheet.resumePaint();
    });
    unlinkTaskItem.addEventListener("click", function () {
        ganttSheet.suspendPaint()
        unlinkTask();
        ganttSheet.resumePaint();
    });

    submitItem.addEventListener("click", function () {
        ganttSheet.submitChanges();
    });
    cancelItem.addEventListener("click", function () {
        ganttSheet.cancelChanges();
    });

    function addTask() {
        var project = ganttSheet.project;
        var selections = ganttSheet.getSelections();
        var insertedRow = Math.min(...selections.map(r => r.row), project.tasks.length)
        var rowCount = selections.map(r => r.rowCount).reduce((pre, current) => { return pre + current });
        var taskData = createTaskDataList(rowCount, () => ({ name: "<新任务>" }));
        project.insertTasksByRow(insertedRow, taskData);
    }

    function addSummary() {
        var project = ganttSheet.project;
        var selectedRange = ganttSheet.getSelections()[0];
        var insertedRow = selectedRange.row;
        var insertedTaskNumbers = ganttSheet.getTaskByRow(insertedRow).taskNumber || project.count;
        var selectedTasks = getSelectedRowIndexes().map((row) => ganttSheet.getTaskByRow(row)).filter((row) => !!row);

        if (selectedTasks.length == 0) {
            project.insertTasks(insertedTaskNumbers, [{ name: "<新摘要任务>" }, { name: "<新任务>" }]);
            project.indentTasks(insertedTaskNumbers + 1);
        } else {
            project.insertTasks(insertedTaskNumbers, { name: "<新摘要任务>" }, selectedTasks[0].level);
            project.indentTasks(selectedTasks.map((t) => t.taskNumber));
        }
        ganttSheet.setSelection(insertedRow, -1, 1, -1);
    }

    function addMilestone() {
        var project = ganttSheet.project;
        var selections = ganttSheet.getSelections();
        var rowCount = selections.map(r => r.rowCount).reduce((pre, current) => { return pre + current });
        var insertedRow = Math.min(...selections.map(r => r.row), project.tasks.length);
        var taskData = createTaskDataList(rowCount, () => ({ name: "<新里程碑>", duration: 0 }));
        project.insertTasksByRow(insertedRow, taskData);
        ganttSheet.setSelection(insertedRow, -1, rowCount, -1);
    }

    function deleteTask() {
        var project = ganttSheet.project;
        var rowIds = getSelectedTaskNumbers();
        project.removeTasks(rowIds);
    }

    function indentTask() {
        var project = ganttSheet.project;
        var rowIds = getSelectedTaskNumbers();
        project.indentTasks(rowIds);
    }

    function outdentTask() {
        var project = ganttSheet.project;
        var rowIds = getSelectedTaskNumbers();
        project.outdentTasks(rowIds);
    }

    function linkTask() {
        var project = ganttSheet.project;
        var links = [];
        var selections = ganttSheet.getSelections();
        var previous = -1;
        for (var range of selections) {
            if (previous != -1) {
                links.push([previous, range.row]);
            }
            for (var row = range.row + 1; row < range.row + range.rowCount; row++) {
                links.push([row - 1, row]);
            }
            previous = range.row + range.rowCount - 1;
        }
        if (links.length <= 0) {
            return;
        }
        project.suspendSchedule();
        for (var link of links) {
            var [fromTaskNumber, toTaskNumber] = link;
            try {
                project.addDependency({ fromTaskNumber, toTaskNumber });
            } catch { }
        }
        project.resumeSchedule();
    }

    function unlinkTask() {
        var project = ganttSheet.project;
        var taskNumbers = getSelectedTaskNumbers();
        var dependencies = [];
        if (taskNumbers.length == 1) {
            var task = project.getTaskByRow(taskNumbers[0]);
            dependencies = [...task.predecessorDependencies, ...task.successorDependencies];
        } else {
            var taskNumberSet = {};
            for (var taskNumber of taskNumbers) {
                taskNumberSet[taskNumber] = true;
            }
            dependencies = project.dependencies.filter(dp => taskNumberSet[dp.from.taskNumber] && taskNumberSet[dp.to.taskNumber]);
        }
        if (dependencies.length >= 1) {
            project.removeDependency(dependencies);
        }
    }

    function getSelectedRowIndexes() {
        var rows = [];
        var selections = ganttSheet.getSelections();
        for (var range of selections) {
            for (var row = range.row; row < range.row + range.rowCount; row++) {
                rows.push(row);
            }
        }
        return rows;
    }

6.导入和导出操作

支持将甘特图插件中展示的内容导出至PDF及Excel的格式。

支持导入导出能力

（支持导入导出能力）

JavaScript代码：

var myTable;
var ganttSheet;
var roundBarsToWholeDays = true;

window.onload = function() {
    var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"), { sheetCount: 0 });
    initSpread(spread);
    initSplitView(spread);
};

function initSpread(spread) {
    spread.suspendPaint();
    initDataSource(spread);
    initGanttSheet(spread);
    spread.resumePaint();
}

function initDataSource(spread) {
    var tableName = "Gantt_Id";
    var baseApiUrl = getBaseApiUrl();
    var apiUrl = baseApiUrl + "/" + tableName;
    var dataManager = spread.dataManager();
    myTable = dataManager.addTable("myTable", {
        batch: true,
        remote: {
            read: {
                url: apiUrl
            }
        },
        schema: {
            hierarchy: {
                type: "Parent",
                column: "parentId"
            },
            columns: {
                id: { isPrimaryKey: true },
                taskNumber: { dataType: "rowOrder" }
            }
        }
    });
}

function initGanttSheet(spread) {
    ganttSheet = spread.addSheetTab(0, "GanttSheet", GC.Spread.Sheets.SheetType.ganttSheet);
    var view = myTable.addView("ganttView", [
        { value: "taskNumber", caption: "NO.", width: 60 },
        { value: "name", caption: "Task Name", width: 200 },
        { value: "duration", caption: "Duration", width: 90 },
        { value: "predecessors", caption: "Predecessors", width: 120, visible: false }
    ]);
    view.fetch().then(function() {
        ganttSheet.bindGanttView(view);
    });
    initSidePanel(spread, ganttSheet);
}

function initSidePanel(spread, ganttSheet) {
    var excelIo = new GC.Spread.Excel.IO();

    var fileInput = document.getElementById("file-input");
    var openFileItem = document.getElementById("open-file");
    var fileNameItem = document.getElementById("file-name");
    var exportJSONItem = document.getElementById("export-to-json");
    var exportSJSItem = document.getElementById("export-to-sjs");
    var exportExcelItem = document.getElementById("export-to-excel");
    var printItem = document.getElementById("print");
    var pdfItem = document.getElementById("pdf");

    var exportFileName = "export";

    openFileItem.addEventListener('click', function() {
        fileInput.click();
    });

    fileInput.addEventListener('change', function(e) {
        fileNameItem.value = 'Loading file...';
        var file = fileInput.files[0];
        if (!file) {
            alert("Upload a file first.");
            return;
        }
        var fileName = file.name;
        var suffix = fileName.substr(fileName.lastIndexOf('.'));
        if (suffix === '.xlsx' || suffix === '.xlsm') {
            // here is excel IO API
            excelIo.open(file, function(json) {
                spread.fromJSON(json);
                fileNameItem.value = fileName;
                fileInput.value = '';
            }, function(e) {
                // process error
                console.log(e);
            });
        } else if (suffix === '.ssjson' || suffix === '.json') {
            var reader = new FileReader();
            reader.onload = function() {
                var spreadJson = JSON.parse(this.result);
                spread.fromJSON(spreadJson);
                fileNameItem.value = fileName;
                fileInput.value = '';
            };
            reader.readAsText(file);
        } else if (suffix === '.sjs') {
            spread.open(file, () => {
                fileNameItem.value = fileName;
                fileInput.value = '';
            }, (e) => {
                console.log(e);
            }, {
                openMode: GC.Spread.Sheets.OpenMode.normal,
                fullRecalc: true,
            });
        }
    });

    exportJSONItem.addEventListener('click', function () {
        var fileName = exportFileName + ".ssjson";
        var json = spread.toJSON();
        saveAs(new Blob([JSON.stringify(json)], { type: "text/plain;charset=utf-8" }), fileName);
    });

    exportSJSItem.addEventListener('click', function () {
        var fileName = exportFileName + ".sjs";
        spread.save(function (blob) {
            saveAs(blob, fileName);
        }, function (e) {
            // process error
            console.log(e);
        }, {
            fileType: GC.Spread.Sheets.FileType.ssjson,
            includeBindingSource: true,
            saveAsView: true
        });
    });

    exportExcelItem.addEventListener('click', function () {
        var fileName = exportFileName + ".xlsx";
        var json = spread.toJSON({ includeBindingSource: true, saveAsView: true });
        // here is excel IO API
        excelIo.save(json, function(blob) {
            saveAs(blob, fileName);
        }, function(e) {
            // process error
            console.log(e);
        }, { xlsxStrictMode: false });
    });

    printItem.addEventListener('click', function() {
        spread.print();
    });

    pdfItem.addEventListener('click', function() {
        spread.savePDF(function (blob) {
            var url = URL.createObjectURL(blob);
            pwin = window.open(url);
        });
    });
}

总结

甘特图是一种强大的项目管理工具，通过直观的时间轴展示任务的安排和进度。它能帮助项目经理们创建详细的项目计划，有效跟踪进度，并合理分配资源。甘特图还可以管理任务间的依赖关系，及时调整时间表，并识别风险与关键路径。它在项目管理中扮演着重要的角色，提高了团队的协作效率和项目的成功率。通过使用甘特图，项目团队能够更好地掌握项目进展，作出决策，并确保项目按时交付。以上功能可以通过前端表格组件 SpreadJS 新晋的甘特图插件方便的添加到系统中。

SpreadJS | 下载试用

纯前端表格控件SpreadJS，兼容 450 种以上的 Excel 公式，具备“高性能、跨平台、与 Excel 高度兼容”的产品特性，备受华为、苏宁易购、天弘基金等行业龙头企业的青睐，并被中国软件行业协会认定为“中国优秀软件产品”。SpreadJS 可为用户提供类 Excel 的功能，满足表格文档协同编辑、 数据填报、 类 Excel 报表设计等业务场景需求，极大的降低企业研发成本和项目交付风险。

如下资源列表，可以为您评估产品提供帮助：

热门博客分类
ComponentOne Enterprise SpreadJS ActiveReports 活字格 Wyn 商业智能 WijmoJS GcExcel 行业动态 ActiveReportsJS Spread .NET
相关产品

SpreadJS

可嵌入您系统的在线Excel的纯前端表格控件

免费试用 产品详情
推荐相关案例
京东物流 - 表格技术在物流行业的敏捷应用实践

物流大促期间出库单量积压场景下，不同仓的生产操作人员需要在统一数据源基础上进行基于自身仓情况的个性化查询分析，从而能够实时监控客单情况，防止积压。要想实现这样的功能，对数据分析平台的要求就非常高。在引入SpreadJS之后，Udata平台可以为客户提供更高效的数据查询方案。

网易 - 灵犀办公文档

为了在前端解析Excel文档，实现多人在线协同编辑，灵犀文档的数据集处理模块完全基于葡萄城的纯前端表格控件SpreadJS进行开发。通过嵌入SpreadJS，文档系统完美复刻了Excel的UI架构，并有效提升了系统多人协作和数据处理效率。

用友 - 畅捷通 - 财务T-UFO报表

由畅捷通推出的财务T-UFO报表，是用友T+Cloud的两大功能模块之一，提供类Excel风格，用于制定个性化报表，并支持自定义取数，借助该报表，财务人员可按部门、个人、往来单位、存货、项目设置辅助核算，实现“人财货客”全链条闭环。

航天信息软件 - 智慧统计平台

由航天信息软件研发的智慧统计平台，基于某统计局的报表填报系统项目而开发的，通过嵌入纯前端表格控件 SpreadJS，该平台实现了在线报表设计及分析功能，通过拖拽元数据（指标）可以快速设计各类报表样式，实现表内、表间审核公式和表内、表间计算公式等。

立信会计师事务所：借助表格技术提升智能审计云平台应用体验

立信会计师事务所（特殊普通合伙）（简称“立信”）于 1927 年在上海创建，是中国建立最早和最有影响的会计师事务所之一。智能审计云平台（SACP）是立信自主研发的行业内第一款按风险导向审计模式要求，以重大报错风险识别、评估和应对作为工作主线，以数据为基础、以数据挖掘为核心、以数据共享为纽带，着眼于数据、立足于数据、集成大数据接口、以数据驱动审计计划的完全基于云的智慧型智能审计系统。

查看更多精彩案例
推荐相关资源
《精算与金融行业场景及技术应用》

本白皮书旨在深入探讨精算学在风险管理和财务分析两个关键领域中的应用。重点介绍如何利用类Excel纯前端表格技术进行数据分析和计算的有效性。通过精确的数据处理和准确的数值模型，帮助金融业企业提高运行效率、加强风险管理，增强公司的决策能力和竞争力。

2023 葡萄城表格技术产品及应用白皮书

葡萄城基于40余年的专业控件技术积累和在电子表格应用领域的经验，推出《2023 葡萄城表格技术产品及应用白皮书》，通过本资料您可以详细了解到葡萄城表格产品的核心技术优势，领略典型应用场景与实践案例，还可获取丰富的技术资源。

LIMS数字化系统方案白皮书

本白皮书旨在分享B/S架构下LIMS系统在数据填报、数据分析和生成报告等场景中的技术痛点及解决方案，帮助企业提升运行效能、质量管理水平，增强竞争力和科研能力。通过引入数字化系统，实验室能够实现更高效的管理和更准确的数据分析，为实验室的发展和创新提供了有力支持。

《全面预算编制场景及技术应用》

本白皮书旨在深入探讨类Excel控件在全面预算编制中的应用，重点介绍如何借助类Excel控件在业务预算和财务预算场景中进行数据的填报和分析。通过提高预算编制的效率和准确性，帮助企业更好地理解和传达预算信息，增强公司的决策能力和竞争力。

查看更多实用资源
关注微信
葡萄城社区二维码

关注“葡萄城社区”

活字格低代码二维码

关注“活字格低代码”

想了解更多信息，请联系我们, 随时掌握技术资源和产品动态

葡萄城热门产品

活字格
打通现有软件，快速定制面向未来的个性化应用
免费试用 产品详情
SpreadJS
可嵌入您系统的在线Excel的纯前端表格控件
免费试用 产品详情
Wyn商业智能
可与企业自有系统深度集成，增强数据分析的 BI 工具
免费试用 产品详情