upload.js
6.68 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
var $ = require('jquery');
$.fn.ajaxfileupload = function(options) {
return this.each(function() {
var settings = {
params: {},
action: '',
onStart: function() {},
onComplete: function(response) {},
onCancel: function() {},
validate_extensions: true,
valid_extensions: ['gif', 'png', 'jpg', 'jpeg'],
// added by xuhongyun for upload limit
// 上传大小: 单位kb, 默认限制50mb
// size="500" spec="1500*1500"
size_limit: 50 * 1024,
// 图片规格 width * heith，单位px, 默认不限制
valid_spec: false,
width_limit: 0,
height_limit: 0,
// end added
submit_button: null
};
var uploading_file = false;
if (options) {
$.extend(settings, options);
}
var $element = $(this);
if ($element.data('ajaxUploader-setup') === true) return;
//支持别的格式上传
var extend = $element.attr("extend");
if (extend) {
settings.valid_extensions = extend.split(',');
}
// add by xuhongyun for upload limit
var size = $element.attr("size");
if (size) {
settings.size_limit = parseInt(size);
}
var spec = $element.attr("spec");
if (spec) {
var array = spec.split('*');
if (array.length == 2) {
settings.width_limit = parseInt(array[0]);
settings.height_limit = parseInt(array[1]);
}
if (settings.width_limit != 0 && settings.height_limit != 0) {
settings.valid_spec = true;
}
}
// end added
// var bucket = $element.attr("bucket");
// if(bucket){
// settings.params.bucket=bucket;
// }
//console.log(settings.params);
$element.change(function() {
uploading_file = false;
if (settings.submit_button == null) {
upload_file();
}
});
if (settings.submit_button == null) {} else {
settings.submit_button.click(function(e) {
e.preventDefault();
if (!uploading_file) {
upload_file();
}
});
}
var upload_file = function() {
if ($element.val() == '') return settings.onCancel.apply($element, [settings.params]);
var ext = $element.val().split('.').pop().toLowerCase();
console.log(settings.validate_extensions);
// add by xuhongyun for upload limit
var files = $element[0].files;
if (files) {
$.each(files, function(index, file) {
// 加载图片，为了获取图片大小
var windowURL = window.URL || window.webkitURL;
var dataURL = windowURL.createObjectURL(file);
var frame_id = 'preview-' + Math.round(new Date().getTime());
$('<img id="' + frame_id +'" />').appendTo('body').attr("src", dataURL);
var img = $('#' + frame_id)[0];
// if (img.complete) {
// alert("加载完成");
// }
// else {
img.onload = function() {
var width = img.offsetWidth,
height = img.offsetHeight;
if (settings.valid_spec == true
&& Math.abs(width - settings.width_limit) > 10
&& Math.abs(height - settings.height_limit) > 10 ) {
// 图片规格超出限制
settings.onComplete.apply($element, [{
status: false,
message: '只允许上传' + settings.width_limit + '*' + settings.height_limit + '的文件，第' + (index+1) + '个文件不符合要求'
}, settings.params]);
var _$element = $element.clone();
var _$parent = $element.parent();
$element.remove();
_$parent.append(_$element);
_$element.ajaxfileupload(settings);
}
// }
};
if (file.size / 1024 > settings.size_limit) {
// 上传大小超出限制。
settings.onComplete.apply($element, [{
status: false,
message: '只允许上传大小' + settings.size_limit + 'KB以内的文件，第' + (index + 1) + '个文件不符合要求'
}, settings.params]);
var _$element = $element.clone();
var _$parent = $element.parent();
$element.remove();
_$parent.append(_$element);
_$element.ajaxfileupload(settings);
return;
}
});
}
// end added
if (true === settings.validate_extensions && $.inArray(ext, settings.valid_extensions) == -1) {
settings.onComplete.apply($element, [{
status: false,
message: '文件类型无效.只支持' + settings.valid_extensions.join(',')
}, settings.params]);
var _$element = $element.clone();
var _$parent = $element.parent();
$element.remove();
_$parent.append(_$element);
_$element.ajaxfileupload(settings);
} else {
uploading_file = true;
var ret = settings.onStart.apply($element, [settings.params]);
wrapElement($element);
if (ret !== false) {
$element.parent('form').submit(function(e) {
e.stopPropagation();
}).submit();
}
}
};
$element.data('ajaxUploader-setup', true);
var handleResponse = function(loadedFrame, element) {
var response, responseStr = $(loadedFrame).contents().text();
try {
response = JSON.parse(responseStr);
} catch (e) {
response = responseStr;
}
element.siblings().remove();
element.unwrap();
uploading_file = false;
settings.onComplete.apply(element, [response, settings.params]);
var _$element = $element.clone();
var _$parent = $element.parent();
$element.remove();
_$parent.append(_$element);
_$element.ajaxfileupload(settings);
};
var wrapElement = function(element) {
var frame_id = 'ajaxUploader-iframe-' + Math.round(new Date().getTime() / 1000)
$('body').after('<iframe width="0" height="0" style="display:none;" name="' + frame_id + '" id="' + frame_id + '"/>');
$('#' + frame_id).get(0).onload = function() {
handleResponse(this, element);
};
element.wrap(function() {
return '<form action="' + settings.action + '" method="POST" enctype="multipart/form-data" target="' + frame_id + '" />'
})
.before(function() {
var key, html = '';
for (key in settings.params) {
var paramVal = settings.params[key];
if (typeof paramVal === 'function') {
paramVal = paramVal();
}
html += '<input type="hidden" name="' + key + '" value="' + paramVal + '" />';
}
html += '<input type="hidden" name="filename" value="' + $element.attr("name") + '" />'
return html;
});
}
});
}
module.exports = $;