Add a Custom Component

You can add custom components to the Designer. For example, the following sample adds a 'Date Picker' component to the SpreadJS Designer Component.

1. Define a custom component class in your project.

   // Add Custom Component
   var DatePicker = defineCustomComponent();
   
   //Build Component Class Structure
   function defineCustomComponent() {
       function DatePicker() {
           GC.Spread.Sheets.Designer.AtomicComponentBase.call(this, ...arguments)
       };
       DatePicker.prototype = new GC.Spread.Sheets.Designer.AtomicComponentBase();
       // This function is used to define innerHTML of component
       DatePicker.prototype.getTemplate = function () {
           return `
               <div class="input-append date" style="margin-top: 35px;">
                 <input size="20" class ='form_date' type="text">
               </div>
               `;
       }
       // Now the host element has been append to DOM, and you can add event listeners to it
       DatePicker.prototype.onMounted = function (host) {
           $(".form_date", host).datepicker();
   
           // When the datepicker changed, raise value changed event
           $(".form_date", host).change((e) => {
               this.raiseValueChanged()
           })
       }
       DatePicker.prototype.onValueChanged = function (prevValue, nextValue, host) {
           $(".form_date", host).datepicker('setDate', (nextValue && nextValue.toLocaleString) ? nextValue.toLocaleString('en-us', { year: 'numeric', month: 'numeric', day: 'numeric' }) : "");
       }
       // This function will be called after raiseValueChanged()
       DatePicker.prototype.updateValue = function (host) {
           var value = $(".form_date", host).datepicker('getDate')
           if (value) {
               return new Date(value);
           }
           return null;
       }
       // Remove the BootStrap datepicker and unbind the change event
       DatePicker.prototype.onDestroy = function (host) {
           $(".form_date", host).datepicker("destroy");
           $(".form_date", host).unbind("change");
       }
   
       return DatePicker;
   }

2. Register the custom component to Designer using the Designer.RegisterComponent method.

   // Register Custom Component to Designer
   GC.Spread.Sheets.Designer.Designer.RegisterComponent("DatePicker", DatePicker);

3. Define the custom component command in the project.

   // Custom Component Command Usage - implement a command
   var date = initCommand();
   
   //Implement a Command
   function initCommand() {
       return {
           title: "Set Date",
           text: "Set Date",
           commandName: "date",
           type: 'DatePicker',
           execute: (designer, propertyName, value) => {
               let sheet = designer.getWorkbook().getActiveSheet();
               if (sheet) {
                   var row = sheet.getActiveRowIndex();
                   var col = sheet.getActiveColumnIndex();
                   sheet.setValue(row, col, value);
               }
           },
           getState: (designer) => {
               var spread = designer.getWorkbook();
               var sheet = spread.getActiveSheet();
               var row = sheet.getActiveRowIndex();
               var col = sheet.getActiveColumnIndex();
               var value = sheet.getValue(row, col);
               return value;
           }
       };
   }

4. Set the above command in the commandMap and add the custom component in the designer config.

   // Custom Designer Config
   var config = initConfig(date);
   
   //Customize Designer Config
   function initConfig(date) {
       var config = GC.Spread.Sheets.Designer.DefaultConfig;
       // Set command in commandMap
       config.commandMap = {
           cmdDatePicker: date
       }
       // Add custom component button in config
       var command = {
           text: "DATE",
           id: "date",
           buttonGroups: [
               {
                   label: "DATE",
                   commandGroup: {
                       direction: "horizontal",
                       commands: ["cmdDatePicker"]
                   }
               }
           ]
       };
       config.ribbon.unshift(command);
       return config;
   }

5. Initialize the designer instance by passing the relevant config parameter for customizable configuration.

   // Create Designer With Config
   designer = new GC.Spread.Sheets.Designer.Designer(designer_host, config);

The below output will be generated: