import PropTypes from '../../_util/vue-types';
import BaseMixin from '../../_util/BaseMixin';
import classNames from 'classnames';
import getUid from './uid';
import warning from '../../_util/warning';
const IFRAME_STYLE = {
position: 'absolute',
top: 0,
opacity: 0,
filter: 'alpha(opacity=0)',
left: 0,
zIndex: 9999,
};
// diferent from AjaxUpload, can only upload on at one time, serial seriously
const IframeUploader = {
mixins: [BaseMixin],
props: {
componentTag: PropTypes.string,
// style: PropTypes.object,
disabled: PropTypes.bool,
prefixCls: PropTypes.string,
// className: PropTypes.string,
accept: PropTypes.string,
// onStart: PropTypes.func,
multiple: PropTypes.bool,
// children: PropTypes.any,
data: PropTypes.oneOfType([PropTypes.object, PropTypes.func]),
action: PropTypes.oneOfType([PropTypes.string, PropTypes.func]),
name: PropTypes.string,
},
data() {
this.file = {};
return {
uploading: false,
};
},
methods: {
onLoad() {
if (!this.uploading) {
return;
}
const { file } = this;
let response;
try {
const doc = this.getIframeDocument();
const script = doc.getElementsByTagName('script')[0];
if (script && script.parentNode === doc.body) {
doc.body.removeChild(script);
}
response = doc.body.innerHTML;
this.$emit('success', response, file);
} catch (err) {
warning(
false,
'cross domain error for Upload. Maybe server should return document.domain script. see Note from https://github.com/react-component/upload',
);
response = 'cross-domain';
this.$emit('error', err, null, file);
}
this.endUpload();
},
onChange() {
const target = this.getFormInputNode();
// ie8/9 don't support FileList Object
// http://stackoverflow.com/questions/12830058/ie8-input-type-file-get-files
const file = (this.file = {
uid: getUid(),
name:
target.value &&
target.value.substring(target.value.lastIndexOf('\\') + 1, target.value.length),
});
this.startUpload();
const { $props: props } = this;
if (!props.beforeUpload) {
return this.post(file);
}
const before = props.beforeUpload(file);
if (before && before.then) {
before.then(
() => {
this.post(file);
},
() => {
this.endUpload();
},
);
} else if (before !== false) {
this.post(file);
} else {
this.endUpload();
}
},
getIframeNode() {
return this.$refs.iframeRef;
},
getIframeDocument() {
return this.getIframeNode().contentDocument;
},
getFormNode() {
return this.getIframeDocument().getElementById('form');
},
getFormInputNode() {
return this.getIframeDocument().getElementById('input');
},
getFormDataNode() {
return this.getIframeDocument().getElementById('data');
},
getFileForMultiple(file) {
return this.multiple ? [file] : file;
},
getIframeHTML(domain) {
let domainScript = '';
let domainInput = '';
if (domain) {
const script = 'script';
domainScript = `<${script}>document.domain="${domain}";`;
domainInput = ``;
}
return `
${domainScript}
`;
},
initIframeSrc() {
if (this.domain) {
this.getIframeNode().src = `javascript:void((function(){
var d = document;
d.open();
d.domain='${this.domain}';
d.write('');
d.close();
})())`;
}
},
initIframe() {
const iframeNode = this.getIframeNode();
let win = iframeNode.contentWindow;
let doc;
this.domain = this.domain || '';
this.initIframeSrc();
try {
doc = win.document;
} catch (e) {
this.domain = document.domain;
this.initIframeSrc();
win = iframeNode.contentWindow;
doc = win.document;
}
doc.open('text/html', 'replace');
doc.write(this.getIframeHTML(this.domain));
doc.close();
this.getFormInputNode().onchange = this.onChange;
},
endUpload() {
if (this.uploading) {
this.file = {};
// hack avoid batch
this.uploading = false;
this.setState({
uploading: false,
});
this.initIframe();
}
},
startUpload() {
if (!this.uploading) {
this.uploading = true;
this.setState({
uploading: true,
});
}
},
updateIframeWH() {
const rootNode = this.$el;
const iframeNode = this.getIframeNode();
iframeNode.style.height = `${rootNode.offsetHeight}px`;
iframeNode.style.width = `${rootNode.offsetWidth}px`;
},
abort(file) {
if (file) {
let uid = file;
if (file && file.uid) {
uid = file.uid;
}
if (uid === this.file.uid) {
this.endUpload();
}
} else {
this.endUpload();
}
},
post(file) {
const formNode = this.getFormNode();
const dataSpan = this.getFormDataNode();
let { data } = this.$props;
if (typeof data === 'function') {
data = data(file);
}
const inputs = document.createDocumentFragment();
for (const key in data) {
if (data.hasOwnProperty(key)) {
const input = document.createElement('input');
input.setAttribute('name', key);
input.value = data[key];
inputs.appendChild(input);
}
}
dataSpan.appendChild(inputs);
new Promise(resolve => {
const { action } = this;
if (typeof action === 'function') {
return resolve(action(file));
}
resolve(action);
}).then(action => {
formNode.setAttribute('action', action);
formNode.submit();
dataSpan.innerHTML = '';
this.$emit('start', file);
});
},
},
mounted() {
this.$nextTick(() => {
this.updateIframeWH();
this.initIframe();
});
},
updated() {
this.$nextTick(() => {
this.updateIframeWH();
});
},
render() {
const { componentTag: Tag, disabled, prefixCls } = this.$props;
const iframeStyle = {
...IFRAME_STYLE,
display: this.uploading || disabled ? 'none' : '',
};
const cls = classNames({
[prefixCls]: true,
[`${prefixCls}-disabled`]: disabled,
});
return (
{this.$slots.default}
);
},
};
export default IframeUploader;