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Merge pull request #36 from nishaaannnt/nishant
added copyQr and DownloadQr option
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,174 @@ | ||
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| /* | ||
| * FileSaver.js | ||
| * A saveAs() FileSaver implementation. | ||
| * | ||
| * By Eli Grey, http://eligrey.com | ||
| * | ||
| * License : https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md (MIT) | ||
| * source : http://purl.eligrey.com/github/FileSaver.js | ||
| */ | ||
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| // The one and only way of getting global scope in all environments | ||
| // https://stackoverflow.com/q/3277182/1008999 | ||
| var _global = typeof window === 'object' && window.window === window | ||
| ? window : typeof self === 'object' && self.self === self | ||
| ? self : typeof global === 'object' && global.global === global | ||
| ? global | ||
| : this | ||
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| function bom (blob, opts) { | ||
| if (typeof opts === 'undefined') opts = { autoBom: false } | ||
| else if (typeof opts !== 'object') { | ||
| console.warn('Deprecated: Expected third argument to be a object') | ||
| opts = { autoBom: !opts } | ||
| } | ||
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| // prepend BOM for UTF-8 XML and text/* types (including HTML) | ||
| // note: your browser will automatically convert UTF-16 U+FEFF to EF BB BF | ||
| if (opts.autoBom && /^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) { | ||
| return new Blob([String.fromCharCode(0xFEFF), blob], { type: blob.type }) | ||
| } | ||
| return blob | ||
| } | ||
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| function download (url, name, opts) { | ||
| var xhr = new XMLHttpRequest() | ||
| xhr.open('GET', url) | ||
| xhr.responseType = 'blob' | ||
| xhr.onload = function () { | ||
| saveAs(xhr.response, name, opts) | ||
| } | ||
| xhr.onerror = function () { | ||
| console.error('could not download file') | ||
| } | ||
| xhr.send() | ||
| } | ||
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| function corsEnabled (url) { | ||
| var xhr = new XMLHttpRequest() | ||
| // use sync to avoid popup blocker | ||
| xhr.open('HEAD', url, false) | ||
| try { | ||
| xhr.send() | ||
| } catch (e) {} | ||
| return xhr.status >= 200 && xhr.status <= 299 | ||
| } | ||
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| // `a.click()` doesn't work for all browsers (#465) | ||
| function click (node) { | ||
| try { | ||
| node.dispatchEvent(new MouseEvent('click')) | ||
| } catch (e) { | ||
| var evt = document.createEvent('MouseEvents') | ||
| evt.initMouseEvent('click', true, true, window, 0, 0, 0, 80, | ||
| 20, false, false, false, false, 0, null) | ||
| node.dispatchEvent(evt) | ||
| } | ||
| } | ||
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| // Detect WebView inside a native macOS app by ruling out all browsers | ||
| // We just need to check for 'Safari' because all other browsers (besides Firefox) include that too | ||
| // https://www.whatismybrowser.com/guides/the-latest-user-agent/macos | ||
| var isMacOSWebView = _global.navigator && /Macintosh/.test(navigator.userAgent) && /AppleWebKit/.test(navigator.userAgent) && !/Safari/.test(navigator.userAgent) | ||
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| var saveAs = _global.saveAs || ( | ||
| // probably in some web worker | ||
| (typeof window !== 'object' || window !== _global) | ||
| ? function saveAs () { /* noop */ } | ||
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| // Use download attribute first if possible (#193 Lumia mobile) unless this is a macOS WebView | ||
| : ('download' in HTMLAnchorElement.prototype && !isMacOSWebView) | ||
| ? function saveAs (blob, name, opts) { | ||
| var URL = _global.URL || _global.webkitURL | ||
| // Namespace is used to prevent conflict w/ Chrome Poper Blocker extension (Issue #561) | ||
| var a = document.createElementNS('http://www.w3.org/1999/xhtml', 'a') | ||
| name = name || blob.name || 'download' | ||
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| a.download = name | ||
| a.rel = 'noopener' // tabnabbing | ||
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| // TODO: detect chrome extensions & packaged apps | ||
| // a.target = '_blank' | ||
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| if (typeof blob === 'string') { | ||
| // Support regular links | ||
| a.href = blob | ||
| if (a.origin !== location.origin) { | ||
| corsEnabled(a.href) | ||
| ? download(blob, name, opts) | ||
| : click(a, a.target = '_blank') | ||
| } else { | ||
| click(a) | ||
| } | ||
| } else { | ||
| // Support blobs | ||
| a.href = URL.createObjectURL(blob) | ||
| setTimeout(function () { URL.revokeObjectURL(a.href) }, 4E4) // 40s | ||
| setTimeout(function () { click(a) }, 0) | ||
| } | ||
| } | ||
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| // Use msSaveOrOpenBlob as a second approach | ||
| : 'msSaveOrOpenBlob' in navigator | ||
| ? function saveAs (blob, name, opts) { | ||
| name = name || blob.name || 'download' | ||
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| if (typeof blob === 'string') { | ||
| if (corsEnabled(blob)) { | ||
| download(blob, name, opts) | ||
| } else { | ||
| var a = document.createElement('a') | ||
| a.href = blob | ||
| a.target = '_blank' | ||
| setTimeout(function () { click(a) }) | ||
| } | ||
| } else { | ||
| navigator.msSaveOrOpenBlob(bom(blob, opts), name) | ||
| } | ||
| } | ||
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| // Fallback to using FileReader and a popup | ||
| : function saveAs (blob, name, opts, popup) { | ||
| // Open a popup immediately do go around popup blocker | ||
| // Mostly only available on user interaction and the fileReader is async so... | ||
| popup = popup || open('', '_blank') | ||
| if (popup) { | ||
| popup.document.title = | ||
| popup.document.body.innerText = 'downloading...' | ||
| } | ||
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| if (typeof blob === 'string') return download(blob, name, opts) | ||
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| var force = blob.type === 'application/octet-stream' | ||
| var isSafari = /constructor/i.test(_global.HTMLElement) || _global.safari | ||
| var isChromeIOS = /CriOS\/[\d]+/.test(navigator.userAgent) | ||
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| if ((isChromeIOS || (force && isSafari) || isMacOSWebView) && typeof FileReader !== 'undefined') { | ||
| // Safari doesn't allow downloading of blob URLs | ||
| var reader = new FileReader() | ||
| reader.onloadend = function () { | ||
| var url = reader.result | ||
| url = isChromeIOS ? url : url.replace(/^data:[^;]*;/, 'data:attachment/file;') | ||
| if (popup) popup.location.href = url | ||
| else location = url | ||
| popup = null // reverse-tabnabbing #460 | ||
| } | ||
| reader.readAsDataURL(blob) | ||
| } else { | ||
| var URL = _global.URL || _global.webkitURL | ||
| var url = URL.createObjectURL(blob) | ||
| if (popup) popup.location = url | ||
| else location.href = url | ||
| popup = null // reverse-tabnabbing #460 | ||
| setTimeout(function () { URL.revokeObjectURL(url) }, 4E4) // 40s | ||
| } | ||
| } | ||
| ) | ||
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| _global.saveAs = saveAs.saveAs = saveAs | ||
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| if (typeof module !== 'undefined') { | ||
| module.exports = saveAs; | ||
| } |
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