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Backend API
<div id="demo-container">
<div class="options">
<div class="caption">Options</div>
<div class="option">
<dx-check-box
text="Auto Update Parent Tasks"
[(value)]="autoUpdateParentTasks"
></dx-check-box>
</div>
<div class="option">
<dx-check-box
text="Enable Dependency Validation"
[(value)]="validateDependencies"
></dx-check-box>
</div>
<div class="option">
<dx-check-box
text="Enable Predecessor Gap"
[(value)]="enablePredecessorGap"
></dx-check-box>
</div>
</div>
<div class="widget-container">
<dx-gantt taskListWidth="500" height="700" taskTitlePosition="none">
<dxo-validation
[autoUpdateParentTasks]="autoUpdateParentTasks"
[validateDependencies]="validateDependencies"
[enablePredecessorGap]="enablePredecessorGap"
></dxo-validation>
<dxo-tasks [dataSource]="tasks"></dxo-tasks>
<dxo-dependencies [dataSource]="dependencies"></dxo-dependencies>
<dxi-column dataField="title" caption="Task" [width]="300"></dxi-column>
<dxi-column
dataField="start"
caption="Start Date"
dataType="date"
></dxi-column>
<dxi-column
dataField="end"
caption="End Date"
dataType="date"
></dxi-column>
<dxo-editing [enabled]="true"></dxo-editing>
</dx-gantt>
</div>
</div>
import { NgModule, Component, enableProdMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { DxGanttModule, DxCheckBoxModule } from 'devextreme-angular';
import { Service, Task, Dependency } from './app.service';
if (!/localhost/.test(document.location.host)) {
enableProdMode();
}
@Component({
selector: 'demo-app',
templateUrl: `app/app.component.html`,
styleUrls: [`app/app.component.css`],
providers: [Service],
preserveWhitespaces: true,
})
export class AppComponent {
tasks: Task[];
dependencies: Dependency[];
autoUpdateParentTasks: boolean;
validateDependencies: boolean;
enablePredecessorGap: boolean;
constructor(service: Service) {
this.tasks = service.getTasks();
this.dependencies = service.getDependencies();
this.autoUpdateParentTasks = true;
this.validateDependencies = true;
this.enablePredecessorGap = true;
}
}
@NgModule({
imports: [
BrowserModule,
DxGanttModule,
DxCheckBoxModule,
],
declarations: [AppComponent],
bootstrap: [AppComponent],
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
#gantt {
height: 700px;
}
.options {
margin-bottom: 20px;
padding: 20px;
background-color: rgba(191, 191, 191, 0.15);
position: relative;
}
.caption {
font-size: 18px;
font-weight: 500;
}
.option {
margin-top: 10px;
margin-right: 40px;
display: inline-block;
}
.option:last-child {
margin-right: 0;
}
import { Injectable } from '@angular/core';
export class Task {
id: number;
parentId: number;
title: string;
start: Date;
end: Date;
progress: number;
}
export class Dependency {
id: number;
predecessorId: number;
successorId: number;
type: number;
}
const currentDate: Date = new Date(Date.now());
const month: number = currentDate.getMonth();
const year: number = currentDate.getFullYear();
const tasks: Task[] = [{
id: 1,
parentId: 0,
title: 'Johnson Residence Construction Project',
start: new Date(year, month - 1, 1),
end: new Date(year, month - 1, 1),
progress: 0,
}, {
id: 2,
parentId: 1,
title: 'Planning and Pre-Construction Phase',
start: new Date(year, month - 1, 1),
end: new Date(year, month - 1, 1),
progress: 0,
}, {
id: 3,
parentId: 2,
title: 'Architectural Design and Site Planning',
start: new Date(year, month - 1, 1),
end: new Date(year, month - 1, 15),
progress: 0,
}, {
id: 4,
parentId: 2,
title: 'Engineering and Final Blueprint',
start: new Date(year, month - 1, 8),
end: new Date(year, month - 1, 15),
progress: 0,
}, {
id: 5,
parentId: 2,
title: 'City Permits and Contracts',
start: new Date(year, month - 1, 15),
end: new Date(year, month - 1, 18),
progress: 0,
}, {
id: 6,
parentId: 1,
title: 'Construction Phase',
start: new Date(year, month - 1, 18),
end: new Date(year, month - 1, 18),
progress: 0,
}, {
id: 7,
parentId: 6,
title: 'Grading and Excavation',
start: new Date(year, month - 1, 18),
end: new Date(year, month - 1, 22),
progress: 0,
}, {
id: 8,
parentId: 6,
title: 'Demolition and Removal',
start: new Date(year, month - 1, 19),
end: new Date(year, month - 1, 23),
progress: 0,
}, {
id: 9,
parentId: 6,
title: 'Foundation and Concrete ',
start: new Date(year, month - 1, 22),
end: new Date(year, month - 1, 28),
progress: 0,
}, {
id: 10,
parentId: 6,
title: 'Rough Framing and Carpentery',
start: new Date(year, month - 1, 25),
end: new Date(year, month, 5),
progress: 0,
}, {
id: 11,
parentId: 6,
title: 'Inspection (Structure)',
start: new Date(year, month, 5),
end: new Date(year, month, 5),
progress: 0,
}, {
id: 12,
parentId: 6,
title: 'Electrical Rough-in',
start: new Date(year, month, 6),
end: new Date(year, month, 19),
progress: 0,
}, {
id: 13,
parentId: 6,
title: 'Plumbing Rough-in',
start: new Date(year, month, 19),
end: new Date(year, month, 19),
progress: 0,
}, {
id: 14,
parentId: 6,
title: 'Heating and A/C',
start: new Date(year, month, 19),
end: new Date(year, month, 26),
progress: 0,
}, {
id: 15,
parentId: 6,
title: 'Drywall',
start: new Date(year, month, 25),
end: new Date(year, month + 1, 10),
progress: 0,
}, {
id: 16,
parentId: 6,
title: 'Painting (Exterior)',
start: new Date(year, month + 1, 7),
end: new Date(year, month + 1, 21),
progress: 0,
}, {
id: 17,
parentId: 6,
title: 'Interior Carpentery (Interior)',
start: new Date(year, month + 1, 17),
end: new Date(year, month + 1, 28),
progress: 0,
}, {
id: 18,
parentId: 6,
title: 'Flooring and Interior Paint',
start: new Date(year, month + 1, 26),
end: new Date(year, month + 2, 9),
progress: 0,
}, {
id: 19,
parentId: 1,
title: 'Final Phase',
start: new Date(year, month + 2, 9),
end: new Date(year, month + 2, 9),
progress: 0,
}, {
id: 20,
parentId: 19,
title: 'Review-Punch List',
start: new Date(year, month + 2, 9),
end: new Date(year, month + 2, 23),
progress: 0,
}, {
id: 21,
parentId: 19,
title: 'Final Inspection',
start: new Date(year, month + 2, 24),
end: new Date(year, month + 2, 24),
progress: 0,
}, {
id: 22,
parentId: 19,
title: 'Final Paperwork and Documents',
start: new Date(year, month + 2, 24),
end: new Date(year, month + 2, 28),
progress: 0,
}];
const dependencies: Dependency[] = [{
id: 1,
predecessorId: 4,
successorId: 5,
type: 0,
}, {
id: 2,
predecessorId: 5,
successorId: 7,
type: 0,
}, {
id: 3,
predecessorId: 12,
successorId: 13,
type: 0,
}, {
id: 4,
predecessorId: 13,
successorId: 14,
type: 0,
}, {
id: 5,
predecessorId: 18,
successorId: 20,
type: 0,
}, {
id: 6,
predecessorId: 21,
successorId: 22,
type: 0,
}];
@Injectable()
export class Service {
getTasks(): Task[] {
return tasks;
}
getDependencies(): Dependency[] {
return dependencies;
}
}
// In real applications, you should not transpile code in the browser.
// You can see how to create your own application with Angular and DevExtreme here:
// https://js.devexpress.com/Documentation/Guide/Angular_Components/Getting_Started/Create_a_DevExtreme_Application/
const componentNames = [
'accordion',
'action-sheet',
'autocomplete',
'bar-gauge',
'box',
'bullet',
'button-group',
'button',
'calendar',
'chart',
'chat',
'check-box',
'circular-gauge',
'color-box',
'context-menu',
'data-grid',
'date-box',
'date-range-box',
'defer-rendering',
'diagram',
'draggable',
'drawer',
'drop-down-box',
'drop-down-button',
'file-manager',
'file-uploader',
'filter-builder',
'form',
'funnel',
'gallery',
'gantt',
'html-editor',
'linear-gauge',
'list',
'load-indicator',
'load-panel',
'lookup',
'map',
'menu',
'multi-view',
'nested',
'number-box',
'pagination',
'pie-chart',
'pivot-grid-field-chooser',
'pivot-grid',
'polar-chart',
'popover',
'popup',
'progress-bar',
'radio-group',
'range-selector',
'range-slider',
'recurrence-editor',
'resizable',
'responsive-box',
'sankey',
'scheduler',
'scroll-view',
'select-box',
'slider',
'sortable',
'sparkline',
'speed-dial-action',
'splitter',
'switch',
'tab-panel',
'tabs',
'tag-box',
'text-area',
'text-box',
'tile-view',
'toast',
'toolbar',
'tooltip',
'tree-list',
'tree-map',
'tree-view',
'validation-group',
'validation-summary',
'validator',
'vector-map',
];
window.exports = window.exports || {};
window.config = {
transpiler: 'ts',
typescriptOptions: {
module: 'system',
emitDecoratorMetadata: true,
experimentalDecorators: true,
},
meta: {
'typescript': {
'exports': 'ts',
},
'devextreme/time_zone_utils.js': {
'esModule': true,
},
'devextreme/localization.js': {
'esModule': true,
},
'devextreme/viz/palette.js': {
'esModule': true,
},
'@angular/platform-browser-dynamic': {
'esModule': true,
},
'@angular/platform-browser': {
'esModule': true,
},
'@angular/core': {
'esModule': true,
},
'@angular/common': {
'esModule': true,
},
'@angular/common/http': {
'esModule': true,
},
'@angular/animations': {
'esModule': true,
},
'@angular/forms': {
'esModule': true,
},
'openai': {
'esModule': true,
},
},
paths: {
'npm:': 'https://unpkg.com/',
'bundles:': '../../../../bundles/',
'externals:': '../../../../bundles/externals/',
},
map: {
'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js',
'typescript': 'npm:typescript@4.2.4/lib/typescript.js',
'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js',
/* @angular */
'@angular/compiler': 'bundles:@angular/compiler.umd.js',
'@angular/platform-browser-dynamic': 'bundles:@angular/platform-browser-dynamic.umd.js',
'@angular/core': 'bundles:@angular/core.umd.js',
'@angular/core/primitives/signals': 'bundles:@angular/core.primitives.signals.umd.js',
'@angular/common': 'bundles:@angular/common.umd.js',
'@angular/common/http': 'bundles:@angular/common-http.umd.js',
'@angular/platform-browser': 'bundles:@angular/platform-browser.umd.js',
'@angular/platform-browser/animations': 'bundles:@angular/platform-browser.umd.js',
'@angular/forms': 'bundles:@angular/forms.umd.js',
/* devextreme */
'devextreme': 'npm:devextreme@link:../../packages/devextreme/artifacts/npm/devextreme/cjs',
'@devextreme/runtime': 'npm:@devextreme/runtime@3.0.12',
'devextreme/bundles/dx.all': 'npm:devextreme@link:../../packages/devextreme/artifacts/npm/devextreme/bundles/dx.all.js',
'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.5',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.54',
/* devextreme-angular umd maps */
'devextreme-angular': 'bundles:devextreme-angular/devextreme-angular.umd.js',
'devextreme-angular/core': 'bundles:devextreme-angular/devextreme-angular-core.umd.js',
'devextreme-angular/http': 'bundles:devextreme-angular/devextreme-angular-http.umd.js',
...componentNames.reduce((acc, name) => {
acc[`devextreme-angular/ui/${name}`] = `bundles:devextreme-angular/devextreme-angular-ui-${name}.umd.js`;
acc[`devextreme-angular/ui/${name}/nested`] = `bundles:devextreme-angular/devextreme-angular-ui-${name}-nested.umd.js`;
return acc;
}, {}),
'tslib': 'npm:tslib/tslib.js',
'rxjs': 'npm:rxjs@7.5.3/dist/bundles/rxjs.umd.js',
'rxjs/operators': 'npm:rxjs@7.5.3/dist/cjs/operators/index.js',
'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',
'luxon': 'npm:luxon@3.4.4/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign',
'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js',
'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js',
'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js',
'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js',
'inferno-hydrate': 'npm:inferno-hydrate/dist/inferno-hydrate.min.js',
'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js',
'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js',
'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js',
// Prettier
'prettier/standalone': 'npm:prettier@2.8.8/standalone.js',
'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js',
},
packages: {
'app': {
main: './app.component.ts',
defaultExtension: 'ts',
},
'devextreme': {
defaultExtension: 'js',
},
'devextreme/events/utils': {
main: 'index',
},
'devextreme/events': {
main: 'index',
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js',
},
'rxjs': {
defaultExtension: 'js',
},
'rxjs/operators': {
defaultExtension: 'js',
},
},
packageConfigPaths: [
'npm:@devextreme/*/package.json',
'npm:@devextreme/runtime@3.0.12/inferno/package.json',
'npm:rxjs@7.5.3/package.json',
'npm:rxjs@7.5.3/operators/package.json',
'npm:devexpress-diagram@2.2.5/package.json',
'npm:devexpress-gantt@4.1.54/package.json',
],
};
System.config(window.config);
// System.import('@angular/compiler').catch(console.error.bind(console));
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
<head>
<title>DevExtreme Demo</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.2.3/css/dx.light.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.2.3/css/dx-gantt.css" />
<script src="https://unpkg.com/core-js@2.6.12/client/shim.min.js"></script>
<script src="https://unpkg.com/zone.js@0.14.10/bundles/zone.umd.js"></script>
<script src="https://unpkg.com/reflect-metadata@0.1.13/Reflect.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script src="config.js"></script>
<script>
System.import("app").catch(console.error.bind(console));
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<demo-app>Loading...</demo-app>
</div>
</body>
</html>
The Gantt supports the following dependency validation rules:
- Finish to Start (FS) - A successor task's start point should be equal or later than the preceding task's end point.
- Start to Start (SS) - A successor task's start point should be equal or later than the preceding task's start point.
- Finish to Finish (FF) - A successor task's end point should be equal or later than the preceding task's end point.
- Start to Finish (SF) - A successor task's end point should be equal or later than a preceding task's start point.
The Gantt also has the autoUpdateParentTasks property that enables validation for parent-child relationship:
- A parent task's duration equals a summary duration of its child tasks.
- A parent task and its first child starts at the same time.
- A parent task and its last child ends at the same time.
- A parent task's progress is a summary progress of its child tasks.
The Gantt processes changes in task values before they are saved to a database. The component displays a popup window with a list of available actions if an error can be handled in several ways.