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koco-dialoger

Dialog manager

koco dialoger

koco dialoger is a knockout component used to display full screen dialogs. It is an opinionated component based on the Koco generator.

Table of contents

Installation

bower install koco-dialoger

Usage

In your startup file, we need to do a number of things in order to fully initialize the dialoger:

startup.js

define(['knockout', 'dialoger'],
    function(ko, dialoger) {
        'use strict';
 
        // First: registering a dialog. 
        dialoger.registerDialog('dialog_name', {
                title: 'dialog_title'
        });
 
        // Second: bind the Knockout ViewModel with the dialoger object. 
        ko.applyBindings({
                dialoger: dialoger
                // other objects come here 
        });
 
        // Third: initialize the dialoger. 
        dialoger.init();
 
        // There's one (optional) config property that can be passed to 
        // init, 'allowNavigation'. If passed as true, then if navigation 
        // is initiated all open dialogs will be closed and navigation 
        // will proceed. That would look like: 
        // dialoger.init({ allowNavigation: true }); 
    });

index.html

<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <title>Test</title>
    </head>
    <body>
        <dialoger data-bind="visible: dialoger.isDialogOpen" params="{ title: dialoger.currentDialogTitle }"></dialoger>
    </body>
</html>

Registering a dialog

To register a dialog, you have to use the registerDialog function:

dialoger.registerDialog(name, options)

name parameter

The name of the knockout component being added. -dialog will be appended automatically at the end.

options parameter

The options to be used when creating the dialog.

{
    title: string       // defines the title of the dialog when displaying. 
    isBower: boolean    // defines if the component comes from bower, a default bower path will be used. 
    basePath: string    // the base path to be use to find the component. It has to be the root of the default files (see below). 
    htmlOnly: boolean   // when creating a dialog, it is possible that there would be no JavaScript linked to this dialog, it will assume so and load the html file using the naming convention (see below). 
}

Creating a dialog component

The creation of a dialog is based on the knockout component system.

JavaScript UI handler

By convention, the name of the file has to be [name]-dialog-ui.js, [name] being the name of your new dialog. This file has to return a Knockout component structure.

define(["text!./test-dialog.html", "knockout"], // beware of the first parameter where you have to define the html file to be used. 
    function(template, ko) {
        'use strict';
 
        var ViewModel = function(params, componentInfo) {
            var self = this;
 
            self.title = params.title;
 
            self.close = function() {
                params.close();
            };
 
            return self;
        };
 
        return {
            viewModel: {
                createViewModel: function(params, componentInfo) {
                    return new ViewModel(params, componentInfo);
                }
            },
            template: template
        };
    });

HTML presentation

When using a JavaScript UI handler, the name of this file has to be defined by you. However, if using the htmlOnly option, the component will be loading [name]-dialog.html by convention.

<div class="navbar navbar-default navbar-fixed-top navbar-inverse">
    <div class="container">
        <a class="navbar-brand" data-bind="html: title"></a>
    </div>
</div>
 
<div class="container">
    <h1 class="page-header" data-bind="text: title"></h1>
    <p>This is a test dialog.</p>
</div>
 
<nav class="navbar navbar-default navbar-fixed-bottom navbar-inverse">
    <div class="container">
        <button class="btn btn-default post-button pull-left" data-bind="click: close, clickBubble: false">
            <i class="fa fa-arrow-left"></i>
            <span>Close</span>
        </button>
    </div>
</nav>

Using a dialog

Now that you created a dialog, you may want to display it and get data from it.

Displaying a dialog

To show a dialog, you have to use the show() function.

dialoger.show(name)

This function returns a jQuery promise and will resolve itself when the dialog is closed.

Closing and returning data from a dialog

Upon displaying a dialog, it will present itself in fullscreen and blocking interface. The close button and any data to be transfered to the caller have to be handled by the callee.

Returing data

The JavaScript UI handler will receive a close function in its params parameter.

close(data);

The data parameter is an object and will be passed as-is to the caller.

Since show returns a promise, you have to use the then function to claim the returned data.

dialoger.show('name').then(function(data) {
        console.log(data);
    });

Closing

To close a dialog, simply call close() without any parameter.

Using the dialog binding handler

A binding handler comes with dialoger to help you display dialogs efficiently.

<button type="button" data-bind="dialog: 'name'"></button>

The binding handler will handle clicks and set the focus back on the button once it is closed. There are several parameters that can be used:

{
    name: 'name',           // name of the dialog to be shown 
    params: {},             // parameters to be passed to the dialog. 
    closed: function(data)// callback when the dialog is closed 
    failed: function(err),  // callback when the dialog has failed. Note that this is called when there is an actual error, not when the user click cancel. 
}
<button type="button" data-bind="dialog: { name: 'name', closed: callbackClosed }"></button>

Dialog inception

Dialoger is able to stack multiple instances of the same dialog or different ones. The close function will fall back to the most recently opened dialog.