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This page will walk you through an example of using the Infusion Reorderer's reorderImages() function to reorder image thumbnails in a collection.

This tutorial assumes that:

  • you are already familiar with HTML, Javascript and CSS
  • you are familiar with what the Image Reorderer is and does
  • now you just want to know how to add it to your file.

For more general information about the Reorderer, see Reorderer. For technical API documentation, see Image Reorderer API and Advanced Reorderer API.


Tutorial: How to Use the Image Reorderer

Scenario

Suppose you're not satisfied with any of the image sharing applications currently available on the web, and you're convinced that you can write a better one. You want to use Infusion's Image Reorderer to let your users re-arrange the images in their collections.

There are five basic steps to using the Image Reorderer in your application:

  • Setup: Download and install the Fluid Infusion library
  • Step 1: Prepare your markup
  • Step 2: Write the script
  • Step 3: Add the script to your HTML
  • Step 4: Apply styles

The rest of this tutorial will explain each of these steps in detail.

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This component is in Production status

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titleOn This Page
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titleSee Also
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titleStill need help?
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Join the infusion-users mailing list and ask your questions there.

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<form action="#" id="reorder-images-form">
    ...
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This example uses an ID, but you might, for example, use a CSS class, or the element hierarchy - whatever works, so long as it uniquely identifies the right element.

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<form action="#" id="reorder-images-form">
    <a href="myImage1.jpg" class="flc-imageReorderer-item">
        <img src="myImage1.jpg" alt="image 1 thumbnail" />
        <span>Image 1</span>
        <input name="image 1" value="0" type="hidden" /> 
    </a>
    <a href="myImage2.jpg" class="flc-imageReorderer-item">
        <img src="myImage2.jpg" alt="image 2 thumbnail" />
        <span>Image 2</span>
        <input name="image 2" value="1" type="hidden" /> 
    </a>
    <a href="myImage3.jpg" class="flc-imageReorderer-item">
        <img src="myImage3.jpg" alt="image 3 thumbnail" />
        <span>Image 3</span>
        <input name="image 3" value="2" type="hidden" /> 
    </a>
    ...
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As with the ID on the <form>, we can use any jQuery selector for the reorderable images. For example, we could attach a unique ID to each movable <a> with a unique prefix, maybe pic-movable1, pic-movable2, etc. Then we could use the jQuery selector [fluid:id^=pic-movable] to override the default selector.

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Create a file, say image-collection.js, and in this file, write a function that looks like this:

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jQuery(document).ready(function () {
    return fluid.reorderImages("#reorder-images-form");
});

In this function call, the parameter to reorderImages(), "#reorder-images-form", is a jQuery selector identifying the element with the ID reorder-images-form. That's all the information required by the fluid.reorderList() function.

By enclosing the function call inside jQuery(document).ready(), we ensure that the HTML is fully rendered before we apply the Reorderer to it.

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If you choose to use a custom selector for the movable items (instead of the default classname), you can override the default using options passed as the second parameter. Define an options block that specifies the selector you'd like, and pass it to the function:

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jQuery(document).ready(function () {
    var opts = {
        selectors: {
            movables: "[id^=pic-movable]"
        }
    };
    return fluid.reorderImages("#reorder-images-form", opts);
});

For more information on selectors and other options, see the Image Reorderer API documentation.

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