77 lines
2.6 KiB
JavaScript
Executable File
77 lines
2.6 KiB
JavaScript
Executable File
(function ($) {
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$.extend({
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uploadPreview : function (options) {
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// Options + Defaults
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var settings = $.extend({
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input_field: ".image-input",
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preview_box: ".image-preview",
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label_field: ".image-label",
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label_default: "Choose File",
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label_selected: "Change File",
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no_label: false,
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success_callback : null,
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}, options);
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// Check if FileReader is available
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if (window.File && window.FileList && window.FileReader) {
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if (typeof($(settings.input_field)) !== 'undefined' && $(settings.input_field) !== null) {
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$(settings.input_field).change(function() {
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var files = this.files;
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if (files.length > 0) {
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var file = files[0];
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var reader = new FileReader();
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// Load file
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reader.addEventListener("load",function(event) {
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var loadedFile = event.target;
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// Check format
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if (file.type.match('image')) {
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// Image
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$(settings.preview_box).css("background-image", "url("+loadedFile.result+")");
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$(settings.preview_box).css("background-size", "cover");
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$(settings.preview_box).css("background-position", "center center");
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} else if (file.type.match('audio')) {
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// Audio
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$(settings.preview_box).html("<audio controls><source src='" + loadedFile.result + "' type='" + file.type + "' />Your browser does not support the audio element.</audio>");
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} else {
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alert("This file type is not supported yet.");
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}
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});
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if (settings.no_label == false) {
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// Change label
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$(settings.label_field).html(settings.label_selected);
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}
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// Read the file
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reader.readAsDataURL(file);
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// Success callback function call
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if(settings.success_callback) {
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settings.success_callback();
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}
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} else {
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if (settings.no_label == false) {
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// Change label
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$(settings.label_field).html(settings.label_default);
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}
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// Clear background
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$(settings.preview_box).css("background-image", "none");
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// Remove Audio
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$(settings.preview_box + " audio").remove();
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}
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});
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}
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} else {
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alert("You need a browser with file reader support, to use this form properly.");
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return false;
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}
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}
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});
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})(jQuery);
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