Page:: Constructor()

This initializes a new instance of the page class. Where super keyword is used to access and call function in an object's parent.

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 constructor(){
    super();
    }

Parameters

The page constructor has four main arguments.

a. This is the page known as crud that references the same page as the main page.

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public mother:outlook.page,

b. The entity name associated with the records being administered.

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public subject: outlook.subject,

c. The table-head(th) operations permitted to be performed on the crud page.

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verbs?: Array<outlook.assets.verb>,

d. This argument represents the primary key and its position from where the administration was initiated. This
​ selection helps determine the offset/location of the displayed records. It contains :- - the primary key. - the original position that's used for updating the original table-data(td) using the obtained crud result.

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public selection?: theme.crud_selection

Description

Mother is the super class, and calls a html page "crud" which is has to return a value as a null value is not allowed.

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super(mother, app.current.config!.crud);

For debugging purposes we'll use the identifier specified below .

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this.id='crud';

Carry out a save of the verbs if they are not empty else perform a save for all the possible cases

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 this.verbs = verbs===(null || undefined) 
     ? ["create", "review", "update", "delete"]
     :verbs;

Save this as the current crud page for use in expressing event listeners on the crud page.

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page.current = this;

Finally set the theme panel to display when this page is administered. Also pass any crud selection from the caller if there are any.

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const Theme = new theme.theme(subject, "#content", this, this.selection)
     this.panels.set("theme", Theme);
 }