74 lines
2.4 KiB
JavaScript
74 lines
2.4 KiB
JavaScript
function readFile(name) {
|
|
var r
|
|
new Ajax.Request("projects/" + name + ".txt", {
|
|
method: "get",
|
|
asynchronous: false,
|
|
onSuccess: function(transport) { r = transport.responseText },
|
|
onFailure: function(transport) { r = "" },
|
|
onException: function(x) { console.log(x) }
|
|
})
|
|
return r
|
|
}
|
|
|
|
function writeFile(name, text) {
|
|
var ok = true
|
|
new Ajax.Request("projects/" + name + ".txt", {
|
|
method: "put",
|
|
asynchronous: false,
|
|
postBody: text,
|
|
onFailure: function() { ok = false }
|
|
})
|
|
if (!ok)
|
|
throw "unable to write file '" + name + "'"
|
|
}
|
|
|
|
function projectIsDirty() { return $('workspaceForm').source.value != $('workspaceForm').source.origValue }
|
|
dirtyAreYouSureMessage = "The changes you have made to this project will be lost unless you press 'cancel' " +
|
|
"and save your work. Proceed?"
|
|
|
|
window.onbeforeunload = function() { if (projectIsDirty()) return dirtyAreYouSureMessage }
|
|
|
|
function loadProject() {
|
|
if (arguments.length > 0) {
|
|
if (arguments[0] == "" || "#" + arguments[0] == document.location.hash)
|
|
return
|
|
document.location.hash = hashChangedHandler.oldHash = "#" + arguments[0]
|
|
}
|
|
if (projectIsDirty() && !confirm(dirtyAreYouSureMessage))
|
|
return
|
|
var projName = document.location.hash.substring(1),
|
|
projData = readFile(projName)
|
|
$('workspaceForm').source.value = projData
|
|
$('workspaceForm').source.origValue = projData
|
|
$('title').innerHTML = "<font color=#000088>" + projName.replace(/_/g, " ") + "</font>" + titleRest
|
|
}
|
|
|
|
function saveProject() {
|
|
try {
|
|
var projName = document.location.hash.substring(1),
|
|
projData = $('workspaceForm').source.value
|
|
// the following is an ugly hack to fix a bug in prototype.js
|
|
if (projData == "")
|
|
projData = " "
|
|
writeFile(projName, projData)
|
|
$('workspaceForm').source.origValue = projData
|
|
alert("Project '" + projName + "' saved")
|
|
}
|
|
catch (e) {
|
|
alert("Error: " + e + "\n" +
|
|
"Please save your work locally (by cutting and pasting),\n" +
|
|
"and let Alex know about this problem.")
|
|
throw e
|
|
}
|
|
}
|
|
|
|
hashChangedHandler = function() {
|
|
if (document.location.hash == hashChangedHandler.oldHash)
|
|
return
|
|
hashChangedHandler.oldHash = document.location.hash
|
|
loadProject()
|
|
}
|
|
hashChangedHandler.oldHash = document.location.hash
|
|
hashChangedHandler.intervalId = setInterval(hashChangedHandler, 1000)
|
|
|