diff options
Diffstat (limited to 'web/react/utils/utils.jsx')
-rw-r--r-- | web/react/utils/utils.jsx | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/web/react/utils/utils.jsx b/web/react/utils/utils.jsx index 8a4d92b85..09240bf06 100644 --- a/web/react/utils/utils.jsx +++ b/web/react/utils/utils.jsx @@ -533,6 +533,19 @@ module.exports.getFileType = function(ext) { return "other"; }; +module.exports.getPreviewImagePathForFileType = function(fileType) { + fileType = fileType.toLowerCase(); + + var icon; + if (fileType in Constants.ICON_FROM_TYPE) { + icon = Constants.ICON_FROM_TYPE[fileType]; + } else { + icon = Constants.ICON_FROM_TYPE["other"]; + } + + return "/static/images/icons/" + icon + ".png"; +}; + module.exports.getIconClassName = function(fileType) { fileType = fileType.toLowerCase(); @@ -557,6 +570,23 @@ module.exports.splitFileLocation = function(fileLocation) { return {'ext': ext, 'name': filename, 'path': filePath}; } +// Asynchronously gets the size of a file by requesting its headers. If successful, it calls the +// provided callback with the file size in bytes as the argument. +module.exports.getFileSize = function(url, callback) { + var request = new XMLHttpRequest(); + + request.open('HEAD', url, true); + request.onreadystatechange = function() { + if (request.readyState == 4 && request.status == 200) { + if (callback) { + callback(parseInt(request.getResponseHeader("content-length"))); + } + } + }; + + request.send(); +}; + module.exports.toTitleCase = function(str) { return str.replace(/\w\S*/g, function(txt){return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();}); } @@ -847,4 +877,39 @@ module.exports.getWindowLocationOrigin = function() { windowLocationOrigin = window.location.protocol + "//" + window.location.hostname + (window.location.port ? ':' + window.location.port: ''); } return windowLocationOrigin; +} + +// Converts a file size in bytes into a human-readable string of the form "123MB". +module.exports.fileSizeToString = function(bytes) { + // it's unlikely that we'll have files bigger than this + if (bytes > 1024 * 1024 * 1024 * 1024) { + return Math.floor(bytes / (1024 * 1024 * 1024 * 1024)) + "TB"; + } else if (bytes > 1024 * 1024 * 1024) { + return Math.floor(bytes / (1024 * 1024 * 1024)) + "GB"; + } else if (bytes > 1024 * 1024) { + return Math.floor(bytes / (1024 * 1024)) + "MB"; + } else if (bytes > 1024) { + return Math.floor(bytes / 1024) + "KB"; + } else { + return bytes + "B"; + } +}; + +// Converts a filename (like those attached to Post objects) to a url that can be used to retrieve attachments from the server. +module.exports.getFileUrl = function(filename) { + var url = filename; + + // This is a temporary patch to fix issue with old files using absolute paths + if (url.indexOf("/api/v1/files/get") != -1) { + url = filename.split("/api/v1/files/get")[1]; + } + url = module.exports.getWindowLocationOrigin() + "/api/v1/files/get" + url; + + return url; +}; + +// Gets the name of a file (including extension) from a given url or file path. +module.exports.getFileName = function(path) { + var split = path.split('/'); + return split[split.length - 1]; }; |