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