How the code works

In this code snippet, you are defining the columns for an Angular Material Table component. The columns array contains objects representing each column in the table, specifying properties like title, name, visible, and optionally buttons for actions. Here’s a breakdown of how it works:

 

this.columns = [
    { title: "Id", name: "Id" , visible: true },
    { title: "Description", name: "description" , visible: true },
    {
        title: "Action",
        name: 'actions',
        visible: true,
        buttons: this._common.getActionButton(this.btnEditClick, this.btnDeleteClick, Function())
    }
];

 

 

title: The display name of the column.

name: The key used to reference the column data.

visible: A boolean indicating whether the column should be visible.

buttons: (optional) Specifies buttons for action columns, typically used for edit/delete actions.

Action Button

buttons: this._common.getActionButton(this.btnEditClick, this.btnDeleteClick, Function())

1. • This line calls a method getActionButton from a _common service or utility class.
   • getActionButton is passed three arguments:
     • this.btnEditClick: A function or method reference for the edit button click action.
     • this.btnDeleteClick: A function or method reference for the delete button click action.
     • Function(): A placeholder or an additional function.

 

The method getActionButton likely returns a configuration or an array of button definitions that can be used in the table to render action buttons. Here's a speculative example of how getActionButton might be implemented:

getActionButton(editAction: Function, deleteAction: Function, extraAction: Function) {
    return [
        {
            icon: 'edit',
            tooltip: 'Edit',
            action: editAction
        },
        {
            icon: 'delete',
            tooltip: 'Delete',
            action: deleteAction
        },
        {
            icon: 'more_vert',
            tooltip: 'More',
            action: extraAction
        }
    ];
}

This example method returns an array of objects where each object represents a button with:

• icon: The icon to display on the button.
• tooltip: The tooltip text for the button.
• action: The function to call when the button is clicked.

 

In your Angular Material Table component, you would use this columns array to configure the displayed columns and their contents, including action buttons. When the table is rendered, the action buttons for each row would be generated based on the definitions provided by getActionButton.

This approach allows for a flexible and reusable way to manage column configurations and action buttons in your table component.