140 lines
4.1 KiB
JavaScript
140 lines
4.1 KiB
JavaScript
'use strict';
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/*@
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Ox.FileButton <f> File Button
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options <o> Options
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disabled <b|false> If true, the button is disabled
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image <s|'file'> Symbol name (if type is 'image')
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The default value will be 'files' if maxFiles is not 1
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maxFiles <n|-1> Maximum number of files (or -1 for unlimited)
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maxSize <n|-1> Maximum total file size in bytes (or -1 for unlimited)
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title <s|''> Title of the button (and its tooltip)
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type <s|'text'> Type of the button ('text' or 'image')
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width <n|256> Width of the button in px
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self <o> Shared private variable
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([options[, self]]) -> <o:Ox.Element> File Button
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click <!> click
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@*/
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Ox.FileButton = function(options, self) {
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self = self || {};
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var that = Ox.Element({}, self)
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.defaults({
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disabled: false,
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image: options && options.maxFiles == 1 ? 'file' : 'files',
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maxFiles: -1,
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maxSize: -1,
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style: 'default',
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title: '',
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type: 'text',
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width: options.type == 'image' ? 16 : 256
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})
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.options(options || {})
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.update({
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disabled: function() {
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self.$button.options({disabled: self.options.disabled});
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self.$input[self.options.disabled ? 'hide' : 'show']();
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},
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title: function() {
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self.$button.options({title: self.options.title});
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}
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})
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.addClass('OxFileButton')
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.css({overflow: 'hidden'});
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self.files = [];
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self.multiple = self.options.maxFiles != 1;
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self.$button = Ox.Button({
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disabled: self.options.disabled,
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style: self.options.style,
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title: self.options.type == 'image'
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? self.options.image
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: self.options.title,
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type: self.options.type,
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width: self.options.type == 'image'
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? 'auto'
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: self.options.width
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})
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.css({
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float: 'left'
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})
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.appendTo(that);
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self.$input = renderInput();
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self.options.disabled && self.$input.hide();
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function selectFiles(e) {
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var filelist = e.target.files,
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files = [];
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self.files = [];
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Ox.loop(filelist.length, function(i) {
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files.push(filelist.item(i));
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});
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files.sort(self.options.maxSize == -1 ? function(a, b) {
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a = a.name.toLowerCase();
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b = b.name.toLowerCase();
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return a < b ? -1 : a > b ? 1 : 0;
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} : function(a, b) {
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// if there's a max size,
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// try to add small files first
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return a.size - b.size;
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}).forEach(function(file) {
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if ((
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self.options.maxFiles == -1
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|| self.files.length < self.options.maxFiles
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) && (
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self.options.maxSize == -1
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|| self.size + file.size < self.options.maxSize
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)) {
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self.files.push(file);
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self.size += file.size;
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}
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});
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self.$input = renderInput();
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if (self.files.length) {
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that.triggerEvent('click', {files: self.files});
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}
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}
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function renderInput() {
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self.$input && self.$input.remove();
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return $('<input>')
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.attr(
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Ox.extend({
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title: self.options.title,
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type: 'file'
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}, self.multiple ? {
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multiple: true
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} : {})
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)
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.css({
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float: 'left',
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width: self.options.width + 'px',
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height: '16px',
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marginLeft: -self.options.width + 'px',
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opacity: 0
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})
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.on({
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change: selectFiles
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})
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.appendTo(that);
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}
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/*@
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blurButton <f> blurButton
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@*/
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that.blurButton = function() {
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self.$input.blur();
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};
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/*@
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focusButton <f> focusButton
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@*/
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that.focusButton = function() {
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self.$input.focus();
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};
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return that;
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}
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