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index.js
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index.js
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/** Simple example: Create a web page with form */
const gui = require ( '../../' ) // stand alone: replace with require( 'easy-web-app' )
// initialize the web app framework and a default main page
let page = gui.init ()
page.header.logoText = 'Test: Dynamic on-the-fly page genaration'
// ============================================================================
// 2nd page with a default view, should be overwritten by callback
let dynamicPage = gui.addPage( 'dynamicPage', 'Dynamic', { id:'Page2' } )
// generate page structure per request
dynamicPage.dynamicRow( ( staticRows, request, page ) => {
return new Promise( ( resolve, reject ) => {
let rnd5 = Math.random() * 5
console.log( 'Gen random row-views for dynamic page: '+page )
// per call you can re-define all the page rows here
let newRows = []
for ( let i = 0; i < rnd5; i++ ) {
newRows.push({
id: 'v'+i, rowId: 'v'+i,
title: 'Dynamic View '+i,
height: '100px', decor: 'decor',
resourceURL: 'none'
})
}
resolve( newRows )
})
})
// ============================================================================
//let's also redefine the nav tabs
gui.dynamicNav( ( navType, navTabs, req ) => {
return new Promise( ( resolve, reject ) => {
if ( navType === 'nav' ) { // can also be 'nav-embed' and 'nav-embed-sub'
console.log( 'Manipulate NavTabs ...' )
// add a funny dummy nav menu item
navTabs.push({
layout: 'xyz', // does not exist, so will redirect to main
label: 'BlaBla'
})
resolve( navTabs )
}
})
})
// ============================================================================
// define callback to manipulate title, header and footer
gui.dynamicTitle( ( title, req, page ) => {
return new Promise( ( resolve, reject ) => {
console.log( 'Change title text for page '+ page +'...' )
title = 'Dynamic Demo'
resolve( title )
})
})
// try out http://localhost:8888/index.html?layout=dynamicPage&id=1234
gui.dynamicHeader( ( headerDef, req, page ) => {
return new Promise( ( resolve, reject ) => {
console.log( 'Change header logo text for page '+ page +'...' )
headerDef.logoText += ' ...'
if ( req.query.id ) {
headerDef.logoText += req.query.id // "id" is passes by v2.3.1 to structure request
}
resolve( headerDef )
})
})
gui.dynamicFooter( ( footerDef, req, page ) => {
return new Promise( ( resolve, reject ) => {
console.log( 'Change footer for page '+ page +'...' )
footerDef.copyrightText += ' :-)'
resolve( footerDef )
})
})