bootstrap-fileinput

An enhanced HTML 5 file input for Bootstrap 3.x with file preview for various files, offers multiple selection, and more. This plugin is inspired by this blog article and Jasny's File Input plugin. The plugin enhances these concepts and simplifies the widget initialization with simple HTML markup on a file input. It offers support for previewing a wide variety of files i.e. images, text, html, video, audio, flash, and objects.

NOTE: The latest version of the plugin v2.9.0 has been released. Refer the CHANGE LOG for details.

Features

The plugin will convert a simple HTML file input to an advanced file picker control. Will help fallback to a normal HTML file input for browsers not supporting JQuery or Javascript.
The file input consists of the following three sections with options and templates to control the display:
- file caption section: to display a brief information of the file(s) selected
- file action buttons section: to browse, remove, and upload files.
- file preview section: to display the selected files on client for preview (supports preview of image, text, flash, and video file types). Other file types will be displayed as normal thumbnails.
The plugin automatically converts an input with type = file to an advanced file picker input if you set its class = file. All options to the input can be passed as HTML5 data attributes.
Ability to select and preview multiple files. Uses HTML 5 File reader API to read and preview files. Displays the progress of files being being loaded onto the preview zone, in case many files are chosen.
Offers predefined templates and CSS classes which can be changed to style your file-input display as per your needs.
With v1.5.0, you can now configure the plugin to show an initial preview of images/files with initial caption (more useful for record update scenarios). Refer the initialPreview and initialCaption properties in the plugin options section for configuring this.
Option to show/hide any or all of the following:
- caption section
- preview section
- upload button
- remove button
Customise the location of the target container elements to display the entire plugin, the caption container, the caption text, the preview container, preview image, and preview status.
For text file previews, autowrap the text to the thumbnail width, and show a wrap indicator link to display complete text on hover. You can customize the wrap indicator (which defaults to …).
Customise the messages for preview, progress, and files selected.
Upload action defaults to form submit. Supports an upload route/server action parameter for custom ajax based upload.
Triggers JQuery events for advanced development. Events currently available are filereset, fileclear, filecleared, fileloaded, and fileerror.
Disabled and readonly file input support.
Size of the entire plugin is less than 6KB if gzipped. The minified assets are less than 21KB (about 18KB for the minified JS and 3KB for the minified CSS).

New features since v2.4.0

Note: There are BC Breaking Changes with release v2.4.0.

With release v2.4.0, the plugin has been revamped to support and configure a wide variety of file formats for preview. This may break some backward compatibility (BC) for older versions that use custom templates.

The following are the major changes with release v2.4.0:

Dynamically auto size the file captions for long file names exceeding container width. New property autoFitCaption is added which defaults to true. When this is true the plugin will auto fit caption text within the container dynamically and responsively based on window size.
Raise new fileimageuploaded event that fires after image is completely loaded on the preview container.
Autosize preview images when they exceed the size of the preview container.
Completely templatized and extensible to allow configuration of the file-input the way the developer wants.
Plugin has been revamped to build preview intelligence based on various file preview types. The inbuilt file support types are categorized as image, text, html, video, audio, flash, object, and other.
allowedPreviewTypes: You can now configure which all file types are allowed to be shown as a preview. This defaults to ['image', 'html', 'text', 'video', 'audio', 'flash', 'object']. Thus all file types are treated as an object to preview by default. For exampleTo preview only image and video, you can set this to ['image', 'video'].
allowedPreviewMimeTypes: In addition to allowedPreviewTypes, you can also control which all mime types can be displayed for preview. This defaults to null, meaning all mime types are supported.

NOTE: With release 2.5.0 you can now control which file types or extensions are allowed for upload by setting allowedFileTypes and allowedFileExtensions.
layoutTemplates: Allows you to configure all layout template settings within one property. The layout objects that can be configured are: main1, main2, preview, caption, and modal.
previewTemplates: All preview templates for each preview type have been combined into one property, instead of separate templates for image, text etc. The keys are the formats as set in allowedPreviewTypes and values are the templates used for previewing. There are default prebuilt templates for each preview file type (generic, image, text, html, video, audio, flash, object, and other). The generic template is used only for displaying initialPreview content using direct markup.
previewSettings: Allows you to configure width and height for each preview image type. The plugin has default widths and heights predefined for each type i.e image, text, html, video, audio, flash, and object.
fileTypeSettings: Allows you to configure and identify each preview file type using a callback. The plugin has default callbacks predefined to identify each type i.e image, text, html, video, audio, flash, and object.
Replacing tags within templates has been enhanced. With this release it will automatically check for multiple occurrences of each tag to replace within a template string.

NOTE: Flash preview will require Shockwave flash to be installed and supported by the client browser. The flash preview currently works successfully with webkit browsers only. Video & Audio formats are however supported by all modern browsers that support the HTML5 video/audio tags. Note that browsers have limited number of video/audio formats supported by the HTML5 video element (e.g. mp4, webm, ogg, mp3, wav). The size of video files are recommended to be small (to be controlled through maxFileSize property) so that it does not affect the preview performance. You can copy a few files from the examples directory of this plugin repo, to test a few examples of flash and video files.

Demo

View the plugin documentation and plugin demos at Krajee JQuery plugins.

Pre-requisites

Bootstrap 3.x
Latest JQuery
Most modern browsers supporting HTML5 (inputs and FileReader API) including CSS3 & JQuery. For Internet Explorer, one must use IE versions 10 and above. IE9 and below will work as a normal file input, and will not support multiple file selection or the HTML 5 FileReader API.

Restrictions

The plugin supports only file input and preview at client level. It does not actually process the upload of the files to the server.

Installation

Using Bower

You can use the bower package manager to install. Run:

bower install bootstrap-fileinput

Using Composer

You can use the composer package manager to install. Either run:

$ php composer.phar require kartik-v/bootstrap-fileinput "dev-master"

or add:

"kartik-v/bootstrap-fileinput": "dev-master"

to your composer.json file

Manual Install

You can also manually install the plugin easily to your project. Just download the source ZIP or TAR ball and extract the plugin assets (css and js folders) into your project.

Usage

Step 1: Load the following assets in your header.

<link href="http://netdna.bootstrapcdn.com/bootstrap/3.1.0/css/bootstrap.min.css" rel="stylesheet">
<link href="path/to/css/fileinput.min.css" media="all" rel="stylesheet" type="text/css" />
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script src="http://netdna.bootstrapcdn.com/bootstrap/3.1.0/js/bootstrap.min.js" type="text/javascript"></script>

If you noticed, you need to load the jquery.min.js and bootstrap.min.css in addition to the fileinput.min.css and fileinput.min.js.

Step 2: Initialize the plugin on your page. For example,

// initialize with defaults
$("#input-id").fileinput();

// with plugin options
$("#input-id").fileinput({'showUpload':false, 'previewFileType':'any'});

The #input-id is the identifier for the input (e.g. type = file) on your page, which is hidden automatically by the plugin.

Alternatively, you can directly call the plugin options by setting data attributes to your input field.

<input id="input-id" type="file" class="file" data-preview-file-type="text" >

Documentation

Plugin Options

The plugin supports these following options:

showCaption

boolean whether to display the file caption. Defaults to true.

showPreview

boolean whether to display the file preview. Defaults to true.

showRemove

boolean whether to display the file remove/clear button. Defaults to true.

showUpload

boolean whether to display the file upload button. Defaults to true. This will default to a form submit button, unless the uploadUrl is specified.

autoFitCaption

boolean whether to automatically size the file caption text to fit the container for long file names overflowing the container. Defaults to true. When set to true, the caption text will be dynamically sized. Shrunk file names will be appended with ellipsis, and the complete filename will be displayed as a title on hover.

captionClass

string any additional CSS class to append to the caption container.

previewClass

string any additional CSS class to append to the preview container.

mainClass

string any additional CSS class to append to the main plugin container.

initialDelimiter

string, the delimiter to be used to allow passing multiple content delimited as a string to initialPreview. Defaults to '*$$*'.

initialPreview

string | array the initial preview content to be displayed. You can pass the minimal HTML markup for displaying your image, text, or file. If set as a string, this will display a single file in the initial preview if there is no delimiter. You can set a delimiter (as defined in initialDelimiter) to show multiple files in initial preview. If set as an array, it will display all files in the array as an initial preview (useful for multiple file upload scenarios).

The following CSS classes will need to be added for displaying each file type as per the plugin style theme:

image files: Include CSS class file-preview-image
text files: Include CSS class file-preview-text
other files: Include CSS class file-preview-other

Examples of how you can setup various files for initial preview:

// for image files
initialPreview: [
    "<img src='/images/desert.jpg' class='file-preview-image' alt='Desert' title='Desert'>",
    "<img src='/images/jellyfish.jpg' class='file-preview-image' alt='Jelly Fish' title='Jelly Fish'>",
],

// for text files
initialPreview: "<div class='file-preview-text' title='NOTES.txt'>" +
    "This is the sample text file content upto wrapTextLength of 250 characters" +
    "<span class='wrap-indicator' onclick='$(\"#show-detailed-text\").modal(\"show\")' title='NOTES.txt'>[…]</span>" +
    "</div>"

// for other files    
initialPreview: "<div class='file-preview-text'>" + 
    "<h2><i class='glyphicon glyphicon-file'></i></h2>" +
    "Filename.xlsx" + "</div>"

initialPreviewCount

int, the count of initial preview items that will be added to the count of files selected in preview. This is applicable when displaying the right caption, when overwriteInitial is set to false.

initialCaption

string the initial preview caption text to be displayed. If you do not set a value here and initialPreview is set to true this will default to "{preview-file-count} files selected", where {preview-file-count} is the count of the files passed in initialPreview.

overwriteInitial

boolean whether you wish to overwrite the initial preview content and caption setup. This defaults to true, whereby, any initialPreview content set will be overwritten, when new file is uploaded or when files are cleared. Setting it to false will help displaying a saved image or file from database always - useful especially when using the multiple file upload feature.

layoutTemplates

object the templates configuration for rendering each part of the layout. You can set the following templates to control the widget layout:

main1: the template for rendering the widget with caption.
main2: the template for rendering the widget without caption.
preview: the template for rendering the preview.
caption: the template for rendering the caption.
modal: the template for rendering the modal (for text file preview zooming).

The main1 and main2 templates would automatically parse the following tags for replacement:

{class}: the CSS class as set in the mainClass property.
{preview}: the content parsed by the previewTemplate and will be displayed only if showPreview is true.
{caption}: the content parsed by the captionTemplate and will be displayed only if showCaption is true.
{remove}: the file remove/clear button and will be displayed only if showRemove is true.
{upload}: the file upload button and will be displayed only if showUpload is true.
{browse}: the main file browse button to select your files for input.

The preview and caption templates can understand the following special tags which will be replaced:

{class}: the CSS class as set in the mainClass, captionClass or previewClass properties.

The layoutTemplates if not set will default to:

{
    main1: '{preview}\n' +
        '<div class="input-group {class}">\n' +
        '   {caption}\n' +
        '   <div class="input-group-btn">\n' +
        '       {remove}\n' +
        '       {upload}\n' +
        '       {browse}\n' +
        '   </div>\n' +
        '</div>',
    main2: '{preview}\n{remove}\n{upload}\n{browse}\n',
    preview: '<div class="file-preview {class}">\n' +
        '   <div class="close fileinput-remove text-right">&times;</div>\n' +
        '   <div class="file-preview-thumbnails"></div>\n' +
        '   <div class="clearfix"></div>' +
        '   <div class="file-preview-status text-center text-success"></div>\n' +
        '   <div class="kv-fileinput-error file-error-message"></div>\n' +
        '</div>',
    caption: '<div tabindex="-1" class="form-control file-caption {class}">\n' +
        '   <span class="glyphicon glyphicon-file kv-caption-icon"></span><div class="file-caption-name"></div>\n' +
        '</div>',
    modal: '<div id="{id}" class="modal fade">\n' +
        '  <div class="modal-dialog modal-lg">\n' +
        '    <div class="modal-content">\n' +
        '      <div class="modal-header">\n' +
        '        <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>\n' +
        '        <h3 class="modal-title">Detailed Preview <small>{title}</small></h3>\n' +
        '      </div>\n' +
        '      <div class="modal-body">\n' +
        '        <textarea class="form-control" style="font-family:Monaco,Consolas,monospace; height: {height}px;" readonly>{body}</textarea>\n' +
        '      </div>\n' +
        '    </div>\n' +
        '  </div>\n' +
        '</div>\n'    
};

previewTemplates

object the templates configuration for rendering each preview file type. The following file types are recognized:

image: the preview template for image files.
text: the preview template for text files.
html: the preview template for html files.
video: the preview template for video files (supported by HTML 5 video tag).
audio: the preview template for audio files (supported by HTML 5 audio tag).
flash: the preview template for flash files (supported currently on webkit browsers).
object: the preview template for all other files - by default treated as object. To disable this behavior, configure the allowedPreviewTypes property.
generic: this template is used ONLY for rendering the initialPreview markup content passed directly as a raw format.

The following tags will be parsed and replaced in each of the templates:

{previewId}: will be replaced with the generated identifier for the preview frame container.
{data}: will be replaced with the data source for each preview type.
{width}: will be replaced with the width for the file type as set in previewSettings.
{height}: will be replaced with the height for the file type as set in previewSettings.
{caption}: will be replaced with the file name.
{type}: will be replaced with the file type.
{content}: this is applicable only for the generic template. It will be replaced with the raw HTML markup as set in initialPreview. None of the above tags will be parsed for the generic template.

As noted, if you are coming from an earlier release (before v2.4.0), all preview templates have now been combined into one property, instead of separate templates for image, text etc.

The previewTemplates if not set will default to:

{
    generic: '<div class="file-preview-frame" id="{previewId}">\n' +
        '   {content}\n' +
        '</div>\n',
    html: '<div class="file-preview-frame" id="{previewId}">\n' +
        '    <object data="{data}" type="{type}" width="{width}" height="{height}">\n' +
        '       ' + DEFAULT_PREVIEW + '\n' +
        '    </object>\n' + PREVIEW_LABEL + 
        '</div>',
    image: '<div class="file-preview-frame" id="{previewId}">\n' +
        '   <img src="{data}" class="file-preview-image" title="{caption}" alt="{caption}" ' + STYLE_SETTING + '>\n' +
        '</div>\n',
    text: '<div class="file-preview-frame" id="{previewId}">\n' +
        '   <div class="file-preview-text" title="{caption}" ' + STYLE_SETTING + '>\n' +
        '       {data}\n' + 
        '   </div>\n' + 
        '</div>\n',
    video: '<div class="file-preview-frame" id="{previewId}" title="{caption}" ' + STYLE_SETTING + '>\n' +
        '   <video width="{width}" height="{height}" controls>\n' +
        '       <source src="{data}" type="{type}">\n' +
        '       ' + DEFAULT_PREVIEW + '\n' +
        '   </video>\n' + PREVIEW_LABEL + 
        '</div>\n',
    audio: '<div class="file-preview-frame" id="{previewId}" title="{caption}" ' + STYLE_SETTING + '>\n' +
        '   <audio controls>\n' +
        '       <source src="{data}" type="{type}">\n' +
        '       ' + DEFAULT_PREVIEW + '\n' +
        '   </audio>\n' + PREVIEW_LABEL + 
        '</div>\n',
    flash: '<div class="file-preview-frame" id="{previewId}" title="{caption}" ' + STYLE_SETTING + '>\n' +
        '   <object type="application/x-shockwave-flash" width="{width}" height="{height}" data="{data}">\n' +
        OBJECT_PARAMS + '       ' + DEFAULT_PREVIEW + '\n' +
        '   </object>\n' + PREVIEW_LABEL + 
        '</div>\n',
    object: '<div class="file-preview-frame" id="{previewId}" title="{caption}" ' + STYLE_SETTING + '>\n' +
        '    <object data="{data}" type="{type}" width="{width}" height="{height}">\n' +
        '      <param name="movie" value="{caption}" />\n' +
        OBJECT_PARAMS + '           ' + DEFAULT_PREVIEW + '\n' +
        '   </object>\n' + PREVIEW_LABEL + 
        '</div>',
    other: '<div class="file-preview-frame" id="{previewId}" title="{caption}" ' + STYLE_SETTING + '>\n' +
        '   ' + DEFAULT_PREVIEW + '\n' + PREVIEW_LABEL + 
        '</div>',
}

allowedFileTypes

array the list of allowed file types for upload. This by default is set to null which means the plugin supports all file types for upload. If an invalid file type is found, then a validation error message as set in msgInvalidFileType will be raised. The following types as set in fileTypeSettings are available for setup.

['image', 'html', 'text', 'video', 'audio', 'flash', 'object']

allowedFileExtensions

array the list of allowed file extensions for upload. This by default is set to null which means the plugin supports all file extensions for upload. If an invalid file extension is found, then a validation error message as set in msgInvalidFileExtension will be raised. An example of setting this could be:

['jpg', 'gif', 'png', 'txt']

NOTE: You need to be careful in case you are setting both allowedFileTypes and allowedFileExtensions. In this case, the allowedFileTypes property is validated first and generally precedes the allowedFileExtensions setting (and the latter validation maybe skipped).

allowedPreviewTypes

array the list of allowed preview types for your widget. This by default supports all file types for preview. The plugin by default treats each file as an object if it does not match any of the previous types. To disable this behavior, you can remove object from the list of allowedPreviewTypes OR fine tune it through allowedPreviewMimeTypes.

This is by default setup as following:

['image', 'html', 'text', 'video', 'audio', 'flash', 'object']

allowedPreviewMimeTypes

array the list of allowed mime types for preview. This is set to null by default which means all possible mime types are allowed. This setting works in combination with allowedPreviewTypes to filter only the needed file types allowed for preview. You can check this list of allowed mime types to add to this list if needed.

previewSettings

object the format settings (width and height) for rendering each preview file type. This is by default setup as following:

{
    image: {width: "auto", height: "160px"},
    html: {width: "320px", height: "180px"},
    text: {width: "160px", height: "160px"},
    video: {width: "320px", height: "240px"},
    audio: {width: "320px", height: "80px"},
    flash: {width: "320px", height: "240px"},
    object: {width: "320px", height: "300px"},
    other: {width: "160px", height: "120px"}
}

fileTypeSettings

object the settings to validate and identify each file type when a file is selected for upload. This is a list of callbacks, which accepts the file mime type and file name as a parameter. This is by default setup as following:

// vType: is the file mime type
// vName: is the file name
{
	image: function(vType, vName) {
		return (typeof vType !== "undefined") ? vType.match('image.*') : vName.match(/\.(gif|png|jpe?g)$/i);
	},
	html: function(vType, vName) {
		return (typeof vType !== "undefined") ? vType == 'text/html' : vName.match(/\.(htm|html)$/i);
	},
	text: function(vType, vName) {
		return typeof vType !== "undefined" && vType.match('text.*') || vName.match(/\.(txt|md|csv|nfo|php|ini)$/i);
	},
	video: function (vType, vName) {
		return typeof vType !== "undefined" && vType.match(/\.video\/(ogg|mp4|webm)$/i) || vName.match(/\.(og?|mp4|webm)$/i);
	},
	audio: function (vType, vName) {
		return typeof vType !== "undefined" && vType.match(/\.audio\/(ogg|mp3|wav)$/i) || vName.match(/\.(ogg|mp3|wav)$/i);
	},
	flash: function (vType, vName) {
		return typeof vType !== "undefined" && vType == 'application/x-shockwave-flash' || vName.match(/\.(swf)$/i);
	},
	object: function (vType, vName) {
		return true;
	},
	other: function (vType, vName) {
		return true;
	},
}

browseLabel

string the label to display for the file picker/browse button. Defaults to Browse ….

browseIcon

string the icon to display before the label for the file picker/browse button. Defaults to   .

browseClass

string the CSS class for the file picker/browse button. Defaults to btn btn-primary.

removeLabel

string the label to display for the file remove button. Defaults to Remove.

removeIcon

string the icon to display before the label for the file picker/remove button. Defaults to   .

removeClass

string the CSS class for the file remove button. Defaults to btn btn-default.

uploadLabel

string the label to display for the file upload button. Defaults to Upload.

uploadIcon

string the icon to display before the label for the file upload button. Defaults to   .

uploadClass

string the CSS class for the file upload button. Defaults to btn btn-default.

uploadUrl

string the URL for the upload processing action (typically for ajax based processing). Defaults to null. If this is not set or null, then the upload button action will default to form submission.

maxFileSize

float the maximum file size for upload in KB. If set to 0, it means size allowed is unlimited. Defaults to 0.

maxFileCount

float the maximum number of files allowed for each multiple upload. If set to 0, it means number of files allowed is unlimited. Defaults to 0.

msgSizeTooLarge

string the message to be displayed when the file size exceeds maximum size. Defaults to:

File "{name}" (<b>{size} KB</b>) exceeds maximum allowed upload size of <b>{maxSize} KB</b>. Please retry your upload!

where:

{name}: will be replaced by the file name being uploaded
{size}: will be replaced by the uploaded file size
{maxSize}: will be replaced by the maxFileSize parameter.

msgFilesTooMany

string the message to be displayed when the file count exceeds maximum count as set in maxFileCount. Defaults to:

Number of files selected for upload <b>({n})</b> exceeds maximum allowed limit of <b>{m}</b>. Please retry your upload!

where:

{n}: will be replaced by number of files selected for upload
{m}: will be replaced by the allowed maximum files as set in maxFileCount

msgFileNotFound

string the exception message to be displayed when the file selected is not found by the FileReader. Defaults to:

File "{name}" not found!

where:

{name}: will be replaced by the file name being uploaded

msgFileNotReadable

string the exception message to be displayed when the file selected is not readable by the FileReader API. Defaults to:

File "{name}" is not readable.

where:

{name}: will be replaced by the file name being uploaded

msgFilePreviewAborted

string the exception message to be displayed when the file preview upload is aborted. Defaults to:

File preview aborted for "{name}".

where:

{name}: will be replaced by the file name being uploaded

msgFilePreviewError

string the exception message to be displayed for any other error when previewing the file. Defaults to:

An error occurred while reading the file "{name}".

where:

{name}: will be replaced by the file name being uploaded

msgInvalidFileType

string the message to be displayed when the file type is not in one of the file types set in allowedFileTypes. Defaults to:

Invalid type for file "{name}". Only "{types}" files are supported.

where:

{name}: will be replaced by the file name being uploaded
{types}: will be replaced by the comma separated list of types defined in allowedFileTypes.

msgInvalidFileExtension

string the message to be displayed when the file type is not in one of the file extensions set in allowedFileExtensions. Defaults to:

Invalid extension for file "{name}". Only "{extensions}" files are supported.

where:

{name}: will be replaced by the file name being uploaded
{extensions}: will be replaced by the comma separated list of extensions defined in allowedFileExtensions.

msgValidationError

string the exception message to be displayed within the caption container (instead of msgFilesSelected), when a validation error is encountered. Defaults to:

<span class="text-danger"><i class="glyphicon glyphicon-exclamation-sign"></i> File Upload Error</span>

msgErrorClass

string the css class for the error message to be displayed in the preview window when the file size exceeds maxSize. Defaults to file-error-message.

msgLoading

string the message displayed when the files are getting read and loaded for preview. Defaults to

Loading file {index} of {files} …

The following special variables will be replaced:

{index}: the sequence number of the current file being loaded.
{files}: the total number of files selected for upload.

msgProgress

string the progress message displayed as each file is loaded for preview. Defaults to:

Loading file {index} of {files} - {name} - {percent}% completed.

The following variables will be replaced:

{index}: the sequence number of the current file being loaded.
{files}: the total number of files selected for upload.
{percent}: the percentage of file read and loaded.
{name}: the name of the current file being loaded.

msgSelected

string the progress message displayed in caption window when multiple (more than one) files are selected. Defaults to {n} files selected. The following variables will be replaced:

{n}: the number of files selected.

previewFileType

string the type of files that are to be displayed in the preview window. Defaults to image. Can be one of the following:

image: Only image type files will be shown in preview.
text: Only text type files will be shown in preview.
any: Both image and text files content will be shown in preview.

Files other than image or text will be displayed as a thumbnail with the filename in the preview window.

wrapTextLength

integer the number of characters after which the content will be stripped/wrapped for text preview. Defaults to 250.

wrapIndicator

string the type of files that are to be displayed in the preview window. Defaults to […]. The following variables will be replaced:

{title}: the content of the entire text file that will be displayed as a span title element.

elErrorContainer

string the identifier for the container element displaying the error (e.g. '#id'). If not set, will default to the container with CSS class kv-fileinput-error inside the preview container (identified by elPreviewContainer). The msgErrorClass will be automatically appended to this container before displaying the error.

elCaptionContainer

string the identifier for the container element containing the caption (e.g. '#id'). If not set, will default to the container with CSS class file-caption inside the main plugin container.

elCaptionText

string the identifier for the container element containing the caption text (e.g. '#id'). If not set, will default to the container with CSS class file-caption-name inside the main plugin container.

elPreviewContainer

string the identifier for the container element containing the preview (e.g. '#id'). If not set, will default to the container with CSS class file-preview inside the main plugin container.

elPreviewImage

string the identifier for the element containing the preview image thumbnails (e.g. '#id'). If not set, will default to the container with CSS class file-preview-thumbnails inside the main plugin container.

elPreviewStatus

string the identifier for the element containing the preview progress status (e.g. '#id'). If not set, will default to the container with CSS class file-preview-status inside the main plugin container.

Plugin Events

The plugin supports these events:

fileclear

This event is triggered when the file input the remove button is pressed for clearing the file preview.

Example:

$('#input-id').on('fileclear', function(event) {
    console.log("fileclear");
});

filecleared

This event is triggered after the files in the preview are cleared.

Example:

$('#input-id').on('filecleared', function(event) {
    console.log("filecleared");
});

fileerror

This event is triggered when a client validation error is encountered for an uploaded file. Additional parameters available are:

file: the FileReader instance
previewId: the identifier for the preview file container.
index: the zero-based sequential index of the loaded file in the preview list

Example:

$('#input-id').on('fileerror', function(event, file, previewId, index) {
    console.log("fileerror");
});

fileloaded

This event is triggered after a file is loaded in the preview. Additional parameters available are:

file: the FileReader instance
previewId: the identifier for the preview file container.
index: the zero-based sequential index of the loaded file in the preview list

Example:

$('#input-id').on('fileloaded', function(event, file, previewId, index) {
    console.log("fileloaded");
});

filereset

This event is triggered when the file input is reset to initial value.

Example:

$('#input-id').on('filereset', function(event) {
    console.log("filereset");
});

fileimageloaded

This event is triggered when each file image is fully loaded in the preview window. This is only applicable for image file previews and if showPreview is set to true. Additional parameters available are:

previewId: the identifier for the preview file container.

Example:

$('#input-id').on('fileimageloaded', function(event, previewId) {
    console.log("fileimageloaded");
});

filebrowse

This event is triggered when the file browse button is clicked to open the file selection dialog.

Example:

$('#input-id').on('filebrowse', function(event) {
    console.log("File browse triggered.");
});

fileselectnone

This event is triggered when no files are selected by the user for a repeat selection scenario (i.e. on a file input that already contains previously selected files). This event is better applicable for browsers like Google Chrome, which clear the file input when the file selection dialog is cancelled. For other browsers, this event is typically triggered only when one resets the form or clears file input (using the remove button).

Example:

$('#input-id').on('fileselectnone', function(event) {
    console.log("Huh! No files were selected.");
});

Plugin Methods

The plugin supports these methods:

disable

Disable the file input.

$('#input-id').fileinput('disable');

enable

Enable the file input.

$('#input-id').fileinput('enable');

reset

Reset the file input.

$('#input-id').fileinput('reset');

clear

Clear the file input.

$('#input-id').fileinput('clear');

refresh

Refreshes the file input plugin based on options provided. You can supply an array of plugin options as a parameter.

// example 1 (disable at runtime)
$('#input-id').attr('disabled', 'disabled');
$('#input-id').fileinput('refresh');

// example 2 (modify plugin options at runtime)
$('#input-id').fileinput('refresh', {browseLabel: 'Select...', removeLabel: 'Delete'});

License

bootstrap-fileinput is released under the BSD 3-Clause License. See the bundled LICENSE.md for details.

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