devextreme
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HTML5 JavaScript Component Suite for Responsive Web Development
159 lines (135 loc) • 6.24 kB
JavaScript
;
/* global Windows */
var $ = require("../core/renderer"),
domAdapter = require("../core/dom_adapter"),
windowUtils = require("../core/utils/window"),
window = windowUtils.getWindow(),
navigator = windowUtils.getNavigator(),
eventsEngine = require("../events/core/events_engine"),
errors = require("../ui/widget/ui.errors"),
browser = require("../core/utils/browser"),
typeUtils = require("../core/utils/type"),
FILE_EXTESIONS = {
EXCEL: "xlsx",
CSS: "css",
PNG: "png",
JPEG: "jpeg",
GIF: "gif",
SVG: "svg",
PDF: "pdf"
};
var MIME_TYPES = exports.MIME_TYPES = {
CSS: "text/css",
EXCEL: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
PNG: "image/png",
JPEG: "image/jpeg",
GIF: "image/gif",
SVG: "image/svg+xml",
PDF: "application/pdf"
};
exports.fileSaver = {
_getDataUri: function _getDataUri(format, data) {
return "data:" + MIME_TYPES[format] + ";base64," + data;
},
/* _cordovaDownloader: function(fileName, href, callback) {
var transfer = new FileTransfer(),
fileAlert = function(res) {
navigator.notification.alert(res.nativeURL, null, DX.localization.message.format("dxFileSaver-fileExported"));
};
transfer.download(href, window.cordova.file.externalRootDirectory + fileName, fileAlert, fileAlert);
}, */
_linkDownloader: function _linkDownloader(fileName, href, clickHandler) {
var exportLinkElement = domAdapter.createElement('a'),
attributes = {
"download": fileName,
"href": href
};
eventsEngine.on($(exportLinkElement), "click", function () {
$(exportLinkElement).remove();
clickHandler && clickHandler.apply(this, arguments);
});
domAdapter.getBody().appendChild(exportLinkElement);
$(exportLinkElement).css({ "display": "none" }).text("load").attr(attributes)[0].click();
return exportLinkElement;
},
_formDownloader: function _formDownloader(proxyUrl, fileName, contentType, data) {
var formAttributes = { method: "post", action: proxyUrl, enctype: "multipart/form-data" },
exportForm = $("<form>").css({ "display": "none" }).attr(formAttributes);
exportForm.append("<input type=\"hidden\" name=\"fileName\" value=\"" + fileName + "\" />");
exportForm.append("<input type=\"hidden\" name=\"contentType\" value=\"" + contentType + "\" />");
exportForm.append("<input type=\"hidden\" name=\"data\" value=\"" + data + "\" />");
exportForm.appendTo("body");
eventsEngine.trigger(exportForm, "submit");
if (eventsEngine.trigger(exportForm, "submit")) exportForm.remove();
///#DEBUG
return exportForm;
///#ENDDEBUG
},
_saveByProxy: function _saveByProxy(proxyUrl, fileName, format, data) {
return this._formDownloader(proxyUrl, fileName, MIME_TYPES[format], data);
},
_winJSBlobSave: function _winJSBlobSave(blob, fileName, format) {
var savePicker = new Windows.Storage.Pickers.FileSavePicker();
savePicker.suggestedStartLocation = Windows.Storage.Pickers.PickerLocationId.documentsLibrary;
savePicker.fileTypeChoices.insert(MIME_TYPES[format], ["." + FILE_EXTESIONS[format]]);
savePicker.suggestedFileName = fileName;
savePicker.pickSaveFileAsync().then(function (file) {
if (file) {
file.openAsync(Windows.Storage.FileAccessMode.readWrite).then(function (outputStream) {
var inputStream = blob.msDetachStream();
Windows.Storage.Streams.RandomAccessStream.copyAsync(inputStream, outputStream).then(function () {
outputStream.flushAsync().done(function () {
inputStream.close();
outputStream.close();
});
});
});
}
});
},
_saveBlobAs: function _saveBlobAs(fileName, format, data, linkClick) {
var that = this;
that._blobSaved = false;
if (typeUtils.isDefined(navigator.msSaveOrOpenBlob)) {
navigator.msSaveOrOpenBlob(data, fileName);
that._blobSaved = true;
} else if (typeUtils.isDefined(window.WinJS)) {
that._winJSBlobSave(data, fileName, format);
that._blobSaved = true;
} else {
var URL = window.URL || window.webkitURL || window.mozURL || window.msURL || window.oURL;
if (typeUtils.isDefined(URL)) {
var objectURL = URL.createObjectURL(data),
clickHandler = function clickHandler(e) {
setTimeout(function () {
URL.revokeObjectURL(objectURL);
///#DEBUG
that._objectUrlRevoked = true;
///#ENDDEBUG
});
///#DEBUG
typeUtils.isFunction(linkClick) && linkClick.apply(this, arguments);
///#ENDDEBUG
};
return that._linkDownloader(fileName, objectURL, clickHandler);
}
}
},
saveAs: function saveAs(fileName, format, data, proxyURL, linkClick) {
fileName += "." + FILE_EXTESIONS[format];
/* if(commonUtils.isDefined(window.cordova)) {
return this._cordovaDownloader(fileName, this._getDataUri(format, data), linkClick);
} */
if (typeUtils.isFunction(window.Blob)) {
this._saveBlobAs(fileName, format, data);
} else {
if (typeUtils.isDefined(proxyURL) && !typeUtils.isDefined(navigator.userAgent.match(/iPad/i))) {
this._saveByProxy(proxyURL, fileName, format, data);
} else {
if (!typeUtils.isDefined(navigator.userAgent.match(/iPad/i))) errors.log("E1034");
if (browser.msie && parseInt(browser.version) < 10) return;
this._linkDownloader(fileName, this._getDataUri(format, data), linkClick);
}
}
}
};