I'm writing a webkit-based osx application with a bundle of javascript files. I setup the webView like that:
webview = [[WebView alloc] init];
[webview setPolicyDelegate:self];
[webview setFrameLoadDelegate:self];
[webview setUIDelegate:self];
[webview setResourceLoadDelegate:self];
WebPreferences* prefs = [webview preferences];
[prefs setUsesPageCache:YES];
[prefs _setLocalStorageDatabasePath:@"/tmp/test"]; // existed folder, writable
[prefs setAllowUniversalAccessFromFileURLs:YES]; // enable cross-domain xmlhttprequest
[prefs setAllowFileAccessFromFileURLs:YES];
[prefs setJavaScriptCanAccessClipboard:YES];
[prefs setDatabasesEnabled:YES]; // enable localDatabase
[prefs setLocalStorageEnabled:YES]; // enable localStorage
[prefs setDeveloperExtrasEnabled:YES];
NSString *filePath = [[NSBundle mainBundle] pathForResource:@"test" ofType:@"html" inDirectory:@"data"];
NSURL *fileURL = [NSURL fileURLWithPath:filePath];
[webview.mainFrame loadRequest:[NSURLRequest requestWithURL:fileURL]];
Here is a part of the code of data/test.html.the alert function is hooked to NSLog the message.
function test(){
alert("startup");
if(window.localStorage){
alert("local storage works");
}else{
alert("local storage not supported");
}
localStorage.setItem('testItem', "hello world; local storage works!");
alert(localStorage.getItem('testItem'));
if(window.openDatabase){
alert("local database works");
window.openDatabase("mydb", "1.0", "my first database", 2 * 1024 * 1024);
}else{
alert("local database not supported");
}
return true;
}
Here is the log:
startup
local storage works
hello world; local storage works!
local database works
CONSOLELOG:17 @ SECURITY_ERR: DOM Exception 18: An attempt was made to break through the security policy of the user agent. @ file:///path/of/my.app/Contents/Resources/data/test.html
I don't know why window.openDatabase works but cannot create a database. Thank you.
