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bootstrap-fileupload.js
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/* =========================================================== * bootstrap-fileupload.js j2 * http://jasny.github.com/bootstrap/javascript.html#fileupload * =========================================================== * Copyright 2012 Jasny BV, Netherlands. * * Licensed under the Apache License, Version 2.0 (the "License") * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ========================================================== */ !function ($) { "use strict"; // jshint ;_ /* FILEUPLOAD PUBLIC CLASS DEFINITION * ================================= */ var Fileupload = function (element, options) { this.$element = $(element) this.type = this.$element.data('uploadtype') || (this.$element.find('.thumbnail').length > 0 ? "image" : "file") this.$input = this.$element.find(':file') if (this.$input.length === 0) return this.name = this.$input.attr('name') || options.name this.$hidden = this.$element.find('input[type=hidden][name="'+this.name+'"]') if (this.$hidden.length === 0) { this.$hidden = $('<input type="hidden" />') this.$element.prepend(this.$hidden) } this.$preview = this.$element.find('.fileupload-preview') var height = this.$preview.css('height') if (this.$preview.css('display') != 'inline' && height != '0px' && height != 'none') this.$preview.css('line-height', height) this.original = { 'exists': this.$element.hasClass('fileupload-exists'), 'preview': this.$preview.html(), 'hiddenVal': this.$hidden.val() } this.$remove = this.$element.find('[data-dismiss="fileupload"]') this.$element.find('[data-trigger="fileupload"]').on('click.fileupload', $.proxy(this.trigger, this)) this.listen() } Fileupload.prototype = { listen: function() { this.$input.on('change.fileupload', $.proxy(this.change, this)) $(this.$input[0].form).on('reset.fileupload', $.proxy(this.reset, this)) if (this.$remove) this.$remove.on('click.fileupload', $.proxy(this.clear, this)) }, change: function(e, invoked) { var file = e.target.files !== undefined ? e.target.files[0] : (e.target.value ? { name: e.target.value.replace(/^.+\\/, '') } : null) if (invoked === 'clear') return if (!file) { this.clear() return } this.$hidden.val('') this.$hidden.attr('name', '') this.$input.attr('name', this.name) if (this.type === "image" && this.$preview.length > 0 && (typeof file.type !== "undefined" ? file.type.match('image.*') : file.name.match('\\.(gif|png|jpe?g)$')) && typeof FileReader !== "undefined") { var reader = new FileReader() var preview = this.$preview var element = this.$element reader.onload = function(e) { preview.html('<img src="' + e.target.result + '" ' + (preview.css('max-height') != 'none' ? 'style="max-height: ' + preview.css('max-height') + ';"' : '') + ' />') element.addClass('fileupload-exists').removeClass('fileupload-new') } reader.readAsDataURL(file) } else { this.$preview.text(file.name) this.$element.addClass('fileupload-exists').removeClass('fileupload-new') } }, clear: function(e) { this.$hidden.val('') this.$hidden.attr('name', this.name) this.$input.attr('name', '') //ie8+ doesn't support changing the value of input with type=file so clone instead if($.browser.msie){ var inputClone = this.$input.clone(true); this.$input.after(inputClone); this.$input.remove(); this.$input = inputClone; }else{ this.$input.val('') } this.$preview.html('') this.$element.addClass('fileupload-new').removeClass('fileupload-exists') if (e) { this.$input.trigger('change', [ 'clear' ]) e.preventDefault() } }, reset: function(e) { this.clear() this.$hidden.val(this.original.hiddenVal) this.$preview.html(this.original.preview) if (this.original.exists) this.$element.addClass('fileupload-exists').removeClass('fileupload-new') else this.$element.addClass('fileupload-new').removeClass('fileupload-exists') }, trigger: function(e) { this.$input.trigger('click') e.preventDefault() } } /* FILEUPLOAD PLUGIN DEFINITION * =========================== */ $.fn.fileupload = function (options) { return this.each(function () { var $this = $(this) , data = $this.data('fileupload') if (!data) $this.data('fileupload', (data = new Fileupload(this, options))) if (typeof options == 'string') data[options]() }) } $.fn.fileupload.Constructor = Fileupload /* FILEUPLOAD DATA-API * ================== */ $(function () { $('body').on('click.fileupload.data-api', '[data-provides="fileupload"]', function (e) { var $this = $(this) if ($this.data('fileupload')) return $this.fileupload($this.data()) var $target = $(e.target).is('[data-dismiss=fileupload],[data-trigger=fileupload]') ? $(e.target) : $(e.target).parents('[data-dismiss=fileupload],[data-trigger=fileupload]').first() if ($target.length > 0) { $target.trigger('click.fileupload') e.preventDefault() } }) }) }(window.jQuery);