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Code Issues Releases Wiki Activity

Browser-storage: Only delete our own items

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We should only delete our own items because browsers share local storage with all file:// URIs
This commit is contained in:
Jermolene 2019-03-03 11:30:14 +00:00
parent 638eb53429
commit dd4305d520
1 changed files with 50 additions and 25 deletions
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75
plugins/tiddlywiki/browser-storage/startup.js
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@ -40,8 +40,8 @@ exports.startup = function() {
compileFilter();
// Listen for tm-clear-browser-storage messages
$tw.rootWidget.addEventListener("tm-clear-browser-storage",function(event) {
window.localStorage.clear();
$tw.wiki.addTiddler({title: ENABLED_TITLE, text: "no"});
clearLocalStorage();
});
// Track tiddler changes
$tw.wiki.addEventListener("change",function(changes) {
@ -66,32 +66,57 @@ exports.startup = function() {
if(title === ENABLED_TITLE) {
return;
}
// Get the tiddler
var tiddler = $tw.wiki.getTiddler(title);
if(tiddler) {
// Get the JSON of the tiddler
var json = JSON.stringify(tiddler.getFieldStrings());
// Try to save it to local storage
try {
window.localStorage.setItem(prefix + title,json);
} catch(e) {
if(e.name === "QuotaExceededError") {
// Complain if we failed
var msg = $tw.wiki.getTiddlerText(QUOTA_EXCEEDED_ALERT_TITLE,DEFAULT_QUOTA_EXCEEDED_ALERT_PREFIX + title + DEFAULT_QUOTA_EXCEEDED_ALERT_SUFFIX);
logger.alert(msg);
// No point in keeping old values around for this tiddler
window.localStorage.removeItem(prefix + title);
} else {
throw e;
}
}
console.log("browser-storage: Saving",title);
} else {
window.localStorage.removeItem(prefix + title);
console.log("browser-storage: Deleting",title);
}
// Save the tiddler
saveTiddlerToLocalStorage(title,{
logger: logger,
prefix: prefix
});
});
});
};
function saveTiddlerToLocalStorage(title,options) {
options = options || {};
// Get the tiddler
var tiddler = $tw.wiki.getTiddler(title);
if(tiddler) {
// Get the JSON of the tiddler
var json = JSON.stringify(tiddler.getFieldStrings());
// Try to save it to local storage
try {
window.localStorage.setItem(options.prefix + title,json);
} catch(e) {
if(e.name === "QuotaExceededError") {
// Complain if we failed
var msg = $tw.wiki.getTiddlerText(QUOTA_EXCEEDED_ALERT_TITLE,DEFAULT_QUOTA_EXCEEDED_ALERT_PREFIX + title + DEFAULT_QUOTA_EXCEEDED_ALERT_SUFFIX);
if(options.logger) {
options.logger.alert(msg);
}
// No point in keeping old values around for this tiddler
window.localStorage.removeItem(options.prefix + title);
} else {
throw e;
}
}
console.log("browser-storage: Saving",title);
} else {
window.localStorage.removeItem(options.prefix + title);
console.log("browser-storage: Deleting",title);
}
}
function clearLocalStorage() {
var url = window.location.pathname,
log = [];
// Step through each browsder storage item
for(var index=window.localStorage.length - 1; index>=0; index--) {
var key = window.localStorage.key(index),
parts = key.split("#");
// Delete it if it's ours
if(parts[0] === "tw5" && parts[1] === url) {
window.localStorage.removeItem(key);
}
}
}
})();